40-F

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U.S. Securities and Exchange Commission
Washington, D.C. 20549
Form 40-F

o	REGISTRATION STATEMENT PURSUANT TO SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934
OR
ý	ANNUAL REPORT PURSUANT TO SECTION 13(a) OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the fiscal year ended December 31, 2012            Commission File Number 1-31690

TRANSCANADA CORPORATION
(Exact Name of Registrant as specified in its charter)

Canada
(Jurisdiction of incorporation or organization)

4922, 4923, 4924, 5172
(Primary Standard Industrial Classification Code Number (if applicable))

Not Applicable
(I.R.S. Employer Identification Number (if applicable))

TransCanada Tower, 450 - 1 Street S.W.
Calgary, Alberta, Canada, T2P 5H1
(403) 920-2000
(Address and telephone number of Registrant's principal executive offices)

TransCanada PipeLine USA Ltd., 717 Texas Street,
Houston, Texas, 77002-2761; (832) 320-5201
(Name, address (including zip code) and telephone number (including area code)
of agent for service in the United States)

Securities registered pursuant to section 12(b) of the Act:

Title of each class	Name of each exchange on which registered
Common Shares (including Rights under Shareholder Rights Plan)	New York Stock Exchange

Securities registered pursuant to Section 12(g) of the Act: None
Securities for which there is a reporting obligation pursuant to Section 15(d) of the Act: None

For annual reports, indicate by check mark the information filed with this Form:

ý Annual Information Form ý Audited annual financial statements

Indicate the number of outstanding shares of each of the issuer's classes of capital or common stock as of the close of the period covered by the annual report.

At December 31, 2012, 705,461,386 common shares;
22,000,000 Cumulative Redeemable First Preferred Shares, Series 1;
14,000,000 Cumulative Redeemable First Preferred Shares, Series 3; and
14,000,000 Cumulative Redeemable First Preferred Shares, Series 5
were issued and outstanding

Indicate by check mark whether the Registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Exchange Act during the preceding 12 months (or such shorter period that the Registrant was required to file such reports) and (2) has been subject to such filing requirements for the past 90 days. Yes ý    No o

Indicate by check mark whether the Registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the Registrant was required to submit and post such files). Yes o    No o

The documents (or portions thereof) forming part of this Form 40-F are incorporated by reference into the following registration statements under the Securities Act of 1933, as amended:

Form	Registration No.
S-8		333-5916
S-8		333-8470
S-8		333-9130
S-8		333-151736
S-8		333-184074
F-3		33-13564
F-3		333-6132
F-10		333-151781
F-10		333-161929
F-10		333-177788

AUDITED CONSOLIDATED ANNUAL FINANCIAL STATEMENTS AND
MANAGEMENT'S DISCUSSION & ANALYSIS

Except sections specifically referenced below which shall be deemed incorporated by reference herein and filed, no other portion of the TransCanada Corporation Annual Report to Shareholders except as otherwise specifically incorporated by reference in the TransCanada Corporation Annual Information Form shall be deemed filed with the U.S. Securities and Exchange Commission (the "Commission") as part of this report under the Exchange Act.

A.    Audited Annual Financial Statements

For audited consolidated financial statements, including the auditors' report, see pages 97 through 158 of the TransCanada Corporation 2012 Annual Report to Shareholders included herein.

B.    Management's Discussion and Analysis

For management's discussion and analysis, see pages 1 through 96 of the TransCanada Corporation 2012 Annual Report to Shareholders included herein under the heading "Management's discussion and analysis".

C.    Management's Report on Internal Control Over Financial Reporting

For management's report on internal control over financial reporting, see "Report of Management" that accompanies the Audited Consolidated Financial Statements on page 97 of the TransCanada Corporation 2012 Annual Report to Shareholders included herein.

2

UNDERTAKING

The Registrant undertakes to make available, in person or by telephone, representatives to respond to inquiries made by the Commission staff, and to furnish promptly, when requested to do so by the Commission staff, information relating to: the securities registered pursuant to Form 40-F; the securities in relation to which the obligation to file an Annual Report on Form 40-F arises; or transactions in said securities.

DISCLOSURE CONTROLS AND PROCEDURES

For information on disclosure controls and procedures, see "Other Information — Controls and Procedures" in Management's discussion and analysis on pages 77 and 78 of the TransCanada Corporation 2012 Annual Report to Shareholders.

AUDIT COMMITTEE FINANCIAL EXPERT

The Registrant's board of directors has determined that it has at least one audit committee financial expert serving on its audit committee. Mr. Kevin E. Benson has been designated an audit committee financial expert and is independent, as that term is defined by the New York Stock Exchange's listing standards applicable to the Registrant. The Commission has indicated that the designation of Mr. Benson as an audit committee financial expert does not make Mr. Benson an "expert" for any purpose, impose any duties, obligations or liability on Mr. Benson that are greater than those imposed on members of the audit committee and board of directors who do not carry this designation or affect the duties, obligations or liability of any other member of the audit committee.

CODE OF ETHICS

The Registrant has adopted a code of business ethics for its directors, officers, employees and contractors. The Registrant's code is available on its website at www.transcanada.com. No waivers have been granted from any provision of the code during the 2012 fiscal year.

PRINCIPAL ACCOUNTANT FEES AND SERVICES

For information on principal accountant fees and services, see "Corporate governance — Audit committee — Pre-approval policies and procedures" and "Corporate governance — Audit committee — External auditor service fees" on page 32 of the TransCanada Corporation Annual Information Form.

OFF-BALANCE SHEET ARRANGEMENTS

The Registrant has no off-balance sheet arrangements, as defined in this Form, other than the guarantees and commitments described in Note 24 of the Notes to the Audited Consolidated Financial Statements attached to this Form 40-F and incorporated herein by reference.

TABULAR DISCLOSURE OF CONTRACTUAL OBLIGATIONS

For information on Tabular Disclosure of Contractual Obligations, see "Contractual Obligations" in Management's Discussion and Analysis on page 67 of the TransCanada Corporation 2012 Annual Report to Shareholders.

3

IDENTIFICATION OF THE AUDIT COMMITTEE

The Registrant has a separately-designated standing Audit Committee. The members of the Audit Committee are:

Chair:
Members: K.E. Benson
D.H. Burney
P.L. Joskow
D.M.G. Stewart

FORWARD-LOOKING INFORMATION

We disclose forward-looking information to help current and potential investors understand management's assessment of our future plans and financial outlook, and our future prospects overall.

Statements that are forward-looking are based on certain assumptions and on what we know and expect today and generally include words like anticipate, expect, believe, may, will, should, estimate or other similar words.

Forward-looking statements in this document may include information about the following, among other things:

•

anticipated business prospects

•

our financial and operational performance, including the performance of our subsidiaries

•

expectations or projections about strategies and goals for growth and expansion

•

expected cash flows

•

expected costs for planned projects, including projects under construction and in development

•

expected schedules for planned projects (including anticipated construction and completion dates)

•

expected regulatory processes and outcomes

•

expected outcomes with respect to legal proceedings, including arbitration

•

expected capital expenditures and contractual obligations

•

expected operating and financial results

•

the expected impact of future commitments and contingent liabilities

•

expected industry, market and economic conditions.

Forward-looking statements do not guarantee future performance. Actual events and results could be significantly different because of assumptions, risks or uncertainties related to our business or events that happen after the date of this document.

Our forward-looking information is based on key assumptions, and subject to the following risks and uncertainties including the following:

Assumptions

•

inflation rates, commodity prices and capacity prices

•

timing of debt issuances and hedging

•

regulatory decisions and outcomes

•

foreign exchange rates

•

interest rates

•

tax rates

•

planned and unplanned outages and the use of our pipeline and energy assets

4

•

integrity and reliability of our assets

•

access to capital markets

•

anticipated construction costs, schedules and completion dates

•

acquisitions and divestitures.

Risks and uncertainties

•

our ability to successfully implement our strategic initiatives

•

whether our strategic initiatives will yield the expected benefits

•

the operating performance of our pipeline and energy assets

•

amount of capacity sold and rates achieved in our U.S. pipelines business

•

the availability and price of energy commodities

•

the amount of capacity payments and revenues we receive from our energy business

•

regulatory decisions and outcomes

•

outcomes of legal proceedings, including arbitration

•

performance of our counterparties

•

changes in the political environment

•

changes in environmental and other laws and regulations

•

competitive factors in the pipeline and energy sectors

•

construction and completion of capital projects

•

labour, equipment and material costs

•

access to capital markets

•

cybersecurity

•

interest and foreign exchange rates

•

weather

•

technological developments

•

economic conditions in North America as well as globally.

You can read more about these factors and others in reports we have filed with Canadian securities regulators and the U.S. Securities and Exchange Commission (SEC).

You should not put undue reliance on forward-looking information and should not use future-oriented information or financial outlooks for anything other than their intended purpose. We do not update our forward-looking statements due to new information or future events, unless we are required to by law.

5

SIGNATURES

Pursuant to the requirements of the Exchange Act, the Registrant certifies that it meets all of the requirements for filing on Form 40-F and has duly caused this Annual Report to be signed on its behalf by the undersigned, thereto duly authorized, in the City of Calgary, Province of Alberta, Canada.

TRANSCANADA CORPORATION
Per:	/s/ DONALD R. MARCHAND DONALD R. MARCHAND Executive Vice-President and Chief Financial Officer
	Date: February 13, 2013

DOCUMENTS FILED AS PART OF THIS REPORT

13.1	TransCanada Corporation Annual Information Form for the year ended December 31, 2012.
13.2	Management's Discussion and Analysis (included on pages 1 through 96 of the TransCanada Corporation 2012 Annual Report to Shareholders).
13.3	2012 Audited Consolidated Financial Statements (included on pages 97 through 158 of the TransCanada Corporation 2012 Annual Report to Shareholders), including the auditors' report thereon and the Report of Independent Registered Public Accounting Firm on the effectiveness of TransCanada's Internal Control Over Financial Reporting as of December 31,  2012.
EXHIBITS
23.1	Consent of KPMG LLP, Independent Registered Public Accounting Firm.
31.1	Certification of Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
31.2	Certification of Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
32.1	Certification of Chief Executive Officer regarding Periodic Report containing Financial Statements.
32.2	Certification of Chief Financial Officer regarding Periodic Report containing Financial Statements.
101.INS	XBRL Instance Document.
101.SCH	XBRL Taxonomy Extension Schema Document.
101.CAL	XBRL Taxonomy Extension Calculation Linkbase Document.
101.DEF	XBRL Taxonomy Definition Linkbase Document.
101.LAB	XBRL Taxonomy Extension Label Linkbase Document.
101.PRE	XBRL Taxonomy Extension Presentation Linkbase Document.

TransCanada Corporation

2012 Annual information form

February 11, 2013

Table of Contents

Presentation of information		2
Forward-looking information		2
TransCanada Corporation		3
	Corporate structure	3
	Intercorporate relationships	4
General development of the business		4
	Developments in the Natural Gas Pipelines business	5
	Developments in the Oil Pipelines business	8
	Developments in the Energy business	10
Business of TransCanada		12
	Natural Gas Pipelines business	13
	Oil Pipelines business	14
	Regulation of the Natural Gas and Oil Pipelines businesses	15
	Energy business	16
General		19
	Employees	19
	Health, safety and environmental protection and social policies	19
Risk factors		20
Dividends		20
Description of capital structure		21
	Share capital	21
Credit ratings		23
	DBRS	24
	Moody's	24
	S&P	25
Market for securities		25
	Common shares	25
	Series 1 preferred shares	26
	Series 3 preferred shares	26
	Series 5 preferred shares	27
Directors and officers		27
	Directors	27
	Board committees	29
	Officers	29
	Conflicts of interest	30
Corporate governance		30
Audit committee		31
	Relevant education and experience of members	31
	Pre-approval policies and procedures	32
	External auditor service fees	32
Legal proceedings and regulatory actions		32
Transfer agent and registrar		33
Interest of experts		33
Additional information		33
Glossary		34
Schedule A		35
Schedule B		36

Presentation of information

Throughout this Annual Information Form (AIF), the terms, we, us, our, the Company and TransCanada mean TransCanada Corporation and its subsidiaries. In particular, TransCanada includes references to TransCanada PipeLines Limited (TCPL). Where TransCanada is referred to with respect to actions that occurred prior to its 2003 plan of arrangement with TCPL, which is described in the TransCanada Corporation – Corporate structure section below, such actions were taken by TCPL or its subsidiaries. The term subsidiary, when referred to in this AIF, with reference to TransCanada means direct and indirect wholly owned subsidiaries of, and legal entities controlled by, TransCanada or TCPL, as applicable.

Unless otherwise noted, the information contained in this AIF is given at or for the year ended December 31, 2012 (Year End). Amounts are expressed in Canadian dollars unless otherwise indicated. Information in relation to metric conversion can be found at Schedule A to this AIF. The Glossary found at the end of this AIF contains certain terms defined throughout this AIF and abbreviations and acronyms that may not otherwise be defined in this document.

Certain portions of TransCanada's Management's Discussion and Analysis dated February 11, 2013 (MD&A) are incorporated by reference into this AIF as stated below. The MD&A can be found on SEDAR (www.sedar.com) under TransCanada's profile.

Financial information is presented in accordance with United States generally accepted accounting principles (U.S. GAAP). Effective January 1, 2012, TransCanada adopted U.S. GAAP for reporting purposes. For more information regarding TransCanada's adoption of U.S. GAAP, refer to the Other information – Critical accounting policies and estimates and Other information – Accounting changes sections of the MD&A.

We use certain financial measures that do not have a standardized meaning under U.S. GAAP because we believe they improve our ability to compare results between reporting periods, and enhance understanding of our operating performance. Known as non-GAAP measures, they may not be comparable to similar measures provided by other companies. Refer to the About our business – Non-GAAP measures section of the MD&A for more information about the non-GAAP measures we use and a reconciliation to their U.S. GAAP equivalents, which section of the MD&A is incorporated by reference herein.

Forward-looking information

This AIF, including the MD&A disclosure incorporated by reference herein, contains certain information that is forward-looking and is subject to important risks and uncertainties.

We disclose forward-looking information to help current and potential investors understand management's assessment of our future plans and financial outlook, and our future prospects overall.

Statements that are forward-looking are based on certain assumptions and on what we know and expect today and generally include words like anticipate, expect, believe, may, will, should, estimate or other similar words.

Forward-looking statements contained or incorporated by reference in this AIF may include information about the following, among other things:

•

anticipated business prospects

•

our financial and operational performance, including the performance of our subsidiaries

•

expectations or projections about strategies and goals for growth and expansion

•

expected cash flows

•

expected costs for planned projects, including projects under construction and in development

•

expected schedules for planned projects (including anticipated construction and completion dates)

•

expected regulatory processes and outcomes

•

expected outcomes with respect to legal proceedings, including arbitration

•

expected capital expenditures and contractual obligations

•

expected operating and financial results

•

the expected impact of future commitments and contingent liabilities

•

expected industry, market and economic conditions.

Forward-looking statements do not guarantee future performance. Actual events and results could be significantly different because of assumptions, risks or uncertainties related to our business or events that happen after the date of this AIF and other disclosure incorporated by reference herein.

2 -- TransCanada Corporation

Our forward-looking information is based on the following key assumptions, and subject to the following risks and uncertainties:

Assumptions

•

inflation rates, commodity prices and capacity prices

•

timing of debt issuances and hedging

•

regulatory decisions and outcomes

•

foreign exchange rates

•

interest rates

•

tax rates

•

planned and unplanned outages and the use of our pipeline and energy assets

•

integrity and reliability of our assets

•

access to capital markets

•

anticipated construction costs, schedules and completion dates

•

acquisitions and divestitures.

Risks and uncertainties

•

our ability to successfully implement our strategic initiatives

•

whether our strategic initiatives will yield the expected benefits

•

the operating performance of our pipeline and energy assets

•

amount of capacity sold and rates achieved in our U.S. pipelines business

•

the availability and price of energy commodities

•

the amount of capacity payments and revenues we receive from our energy business

•

regulatory decisions and outcomes

•

outcomes of legal proceedings, including arbitration

•

performance of our counterparties

•

changes in the political environment

•

changes in environmental and other laws and regulations

•

competitive factors in the pipeline and energy sectors

•

construction and completion of capital projects

•

labour, equipment and material costs

•

access to capital markets

•

cybersecurity

•

interest and foreign exchange rates

•

weather

•

technological developments

•

economic conditions in North America as well as globally.

You can read more about these factors and others in reports we have filed with Canadian securities regulators and the U.S. Securities and Exchange Commission (SEC).

You should not put undue reliance on forward-looking information and should not use future-oriented information or financial outlooks for anything other than their intended purpose. We do not update our forward-looking statements due to new information or future events, unless we are required to by law.

TransCanada Corporation

CORPORATE STRUCTURE
Our head office and registered office are located at 450 - 1st Street S.W., Calgary, Alberta, T2P 5H1. TransCanada was incorporated pursuant to the provisions of the Canada Business Corporations Act (CBCA) on February 25, 2003 in connection with a plan of arrangement which established TransCanada as the parent company of TCPL. The arrangement was approved by TCPL common shareholders on April 25, 2003 and, following court approval and the filing of Articles of Arrangement, the arrangement became effective May 15, 2003. Pursuant to the arrangement, the common shareholders of TCPL exchanged each of their TCPL common shares for one common share of TransCanada. The debt securities and preferred shares of TCPL remained obligations and securities of TCPL. TCPL continues to carry on business as the principal operating subsidiary of TransCanada and its subsidiaries. TransCanada does not hold any material assets directly, other than the common shares of TCPL and receivables from certain of TransCanada's subsidiaries.

2012 Annual information form -- 3

INTERCORPORATE RELATIONSHIPS
The following diagram presents the name and jurisdiction of incorporation, continuance or formation of TransCanada's principal subsidiaries as at Year End. Each of the subsidiaries shown has total assets that exceeded 10 per cent of the total consolidated assets of TransCanada or revenues that exceeded 10 per cent of the total consolidated revenues of TransCanada as at Year End. TransCanada beneficially owns, controls or directs, directly or indirectly, 100 per cent of the voting shares in each of these subsidiaries, with the exception of TransCanada Keystone Pipeline, LP in which TransCanada indirectly holds 100 per cent of the partnership interests.

The above diagram does not include all of the subsidiaries of TransCanada. The assets and revenues of excluded subsidiaries in the aggregate did not exceed 20 per cent of the total consolidated assets of TransCanada as at Year End or total consolidated revenues of TransCanada for the year then ended.

General development of the business

Our reportable business segments are Natural Gas Pipelines, Oil Pipelines and Energy. Natural Gas Pipelines and Oil Pipelines are principally comprised of the Company's respective natural gas and oil pipelines in Canada, the U.S. and Mexico as well as our regulated natural gas storage operations in the U.S. Energy includes the Company's power operations and the non-regulated natural gas storage business in Canada. Refer to the Business of TransCanada section below for further information regarding our Natural Gas Pipelines, Oil Pipelines and Energy businesses.

Summarized below are significant developments that have occurred in TransCanada's Natural Gas Pipelines, Oil Pipelines and Energy businesses, respectively, and the significant acquisitions, dispositions, events or conditions which have had an influence on that development, during the last three financial years.

4 -- TransCanada Corporation

DEVELOPMENTS IN THE NATURAL GAS PIPELINES BUSINESS

Date	Description of development
Canadian Mainline
December 2010	TransCanada filed an application with the National Energy Board (NEB) for approval of the interim 2011 tolls for the Canadian Mainline which contained certain changes to the tolling mechanism to reduce long haul tolls. The NEB decided not to approve the tolls as requested in the interim tolls application and set the then current 2010 tolls as interim tolls commencing January 1, 2011.
January – February 2011	TransCanada received approval for revised interim tolls, effective March 1, 2011 which increased interim tolls to more closely align with tolls calculated in accordance with the 2007-2011 settlement with stakeholders and more closely reflected the Canadian Mainline's costs and throughput for 2011.
September 2011	We filed a comprehensive restructuring proposal (Mainline Restructuring Proposal) with the NEB for the Canadian Mainline. The proposal is intended to enhance the competitiveness of the Canadian Mainline and transportation from the Western Canadian Sedimentary Basin (WCSB), and includes a request for 2012 and 2013 tolls that align with the proposed changes to our business structure and the terms and conditions of service on the Canadian Mainline. The NEB established interim tolls for 2012 based on the approved 2011 final tolls.
November – December 2011	TransCanada filed for and received approval to implement interim 2012 tolls on the Canadian Mainline effective January 1, 2012, at the same level as then approved 2011 final tolls. The NEB approved TransCanada's application for 2011 final tolls for the Canadian Mainline at the level of the tolls that were being charged on an interim basis. Final 2011 tolls were calculated in accordance with previously approved toll methodologies and were based on the principles contained in the 2007-2011 settlement with stakeholders, with adjustments to reduce toll impacts. Certain aspects of the 2011 revenue requirement were rolled into the Mainline Restructuring Proposal.
May 2012	We received NEB approval to build new pipeline facilities to provide Southern Ontario with additional natural gas supply from the Marcellus shale basin.
May 2012	The additional open season for firm transportation service on the Canadian Mainline, to bring additional Marcellus shale gas into Canada, closed. We were able to accommodate an additional 50 million cubic feet per day (MMcf/d) from the Niagara meter station to Kirkwall, Ontario, effective November 2012, with the potential for an additional 350 MMcf/d of incremental volume for November 2015, subject to finalizing precedent agreements with the interested parties.
June 2012	The NEB hearing on the Mainline Restructuring Proposal began and the hearing concluded in December 2012. A decision is not expected until late first quarter or early second quarter 2013.
November 2012	Natural gas supply from the Marcellus shale basin supply began moving in November 2012.
Alberta System
February 2010	TransCanada filed an application with the NEB for approval to construct and operate the Horn River pipeline.
March 2010	The North Central Corridor expansion of the Alberta System was completed.
March 2010	After a public hearing, the NEB approved TransCanada's application after a public hearing to construct and operate the Groundbirch pipeline project.
June 2010	TransCanada reached a three year settlement agreement with the Alberta System shippers and other interested parties and filed a 2010-2012 Revenue Requirement Settlement Application with the NEB.
August 2010	The NEB approved TransCanada's November 2009 application for the Alberta System's Rate Design Settlement and the commercial integration of the ATCO Pipelines system with the Alberta System.
September 2010	The NEB approved the Alberta System's 2010-2012 Revenue Requirement Settlement Application.
October 2010	The NEB approved final 2010 tolls for the Alberta System, which reflect the Alberta System 2010-2012 Revenue Requirement Settlement and Rate Design Settlement.
December 2010	The NEB approved the interim 2011 tolls for the Alberta System reflecting the 2010-2012 Revenue Requirement Settlement and continuing to transition to the toll methodology approved in the Rate Design Settlement.
December 2010	Groundbirch pipeline was completed and began transporting natural gas from the Montney shale gas formation into the Alberta System.
January 2011	TransCanada received approval from the NEB to construct the Horn River pipeline.
March 2011	TransCanada commenced construction of the $275 million Horn River pipeline. In addition, the Company executed an agreement to extend the Horn River pipeline by approximately 100 kilometers (km) (62 miles) at an estimated cost of $230 million. An application requesting approval to construct and operate this extension was filed with the NEB in October 2011. The total contracted volumes for Horn River, including the extension, are expected to be approximately 900 MMcf/d by 2020.
August 2011	The NEB approved construction of a 24 km (15 mile) extension of the Groundbirch pipeline and construction commenced.

2012 Annual information form -- 5

Date	Description of development
October 2011	Commercial integration of the Alberta System and ATCO Pipelines systems commenced. Under an agreement, the facilities of the Alberta System and ATCO Pipelines system are commercially operated as a single transmission system and transportation service is provided to customers by TransCanada pursuant to the Alberta System's tariff and suite of rates and services. The agreement further identifies distinct geographic areas within Alberta for the construction of new facilities by each of the Alberta System and ATCO Pipelines system.
October 2011	The NEB approved the construction of natural gas pipeline projects for the Alberta System with a capital cost of approximately $910 million.
November – December 2011	The regulatory decisions by which commercial integration of the Alberta System and ATCO Pipelines system was authorized are the subject of appeals to the Federal Court of Appeal. TransCanada continues to work with ATCO to gather information for the final stage of the integration which is to swap assets of equal value and will require approval by both the Alberta Utilities Commission and the NEB.
May 2012	The approximate $250 million Horn River project was completed, extending the Alberta System into the Horn River shale play in British Columbia (B.C.).
June 2012	The NEB approved the Leismer-Kettle River Crossover project, a 77 km (46 mile) pipeline to expand the Alberta System with the intent of increasing capacity to meet demand in northeastern Alberta. The expected cost of the expansion is an estimated $160 million.
Third Quarter 2012	During the first nine months of 2012, TransCanada continued to expand its Alberta System by completing and placing in-service twelve separate pipeline projects at a total cost of approximately $680 million.
December 2012	TransCanada was waiting for approval of approximately $330 million in additional projects, including the $100 million Chinchaga Expansion and the $230 million Komie North project that would extend the Alberta System further into the Horn River area.
December 2012	The current settlements for the Alberta and Foothills systems expired. Final tolls for 2013 will be determined through either new settlements or rate cases and any orders resulting from the NEB's decision on the Mainline Restructuring Proposal.
January 2013	The NEB issued its recommendation to the Governor-in-Council that the proposed Chinchaga Expansion component of the Komie North project be approved, but denied the proposed Komie North Extension component. All applications awaiting approval as of the end of 2012 have now been addressed.
2013	We continue to advance pipeline development projects in B.C. and Alberta to transport new natural gas supply. We have filed applications with the NEB to expand the Alberta System to accommodate requests for additional natural gas transmission service throughout the northwest and northeast portions of the WCSB. In addition, subject to regulatory approvals, we propose to extend the Alberta System in northeast B.C. to connect both to the Prince Rupert Gas Transmission Project (as described below) and to additional North Montney gas supplies. Initial capital cost estimates are approximately $1 billion to $1.5 billion, with an in-service date targeted for the end of 2015. We have incremental firm commitments to transport approximately 3.4 billion cubic feet per day (Bcf/d) from western Alberta and northeastern B.C. by 2014.
Coastal GasLink
June 2012	We were selected by Shell Canada Limited (Shell) and its partners to design, build, own and operate the proposed Coastal GasLink project, an estimated $4 billion pipeline. The liquefied natural gas (LNG) Canada project is a joint venture led by Shell, with partners Korea Gas Corporation, Mitsubishi Corporation and PetroChina Company Limited. The approximate 650 km (404 mile) pipeline is expected to have an initial capacity of more than 1.7 Bcf/d and be placed in-service toward the end of the decade, subject to a final investment decision to be made by LNG Canada subsequent to obtaining final regulatory approvals.
Prince Rupert Gas Transmission Project
January 2013	We were selected by Progress Energy Canada Ltd. (Progress) to, subject to regulatory approvals, design, build, own and operate the proposed $5 billion Prince Rupert Gas Transmission Project. This proposed pipeline will transport natural gas primarily from the North Montney gas-producing region near Fort St John, B.C., to the proposed Pacific Northwest LNG export facility near Prince Rupert, B.C. We expect to finalize definitive agreements in early 2013, leading to an in-service date in late 2018. A final investment decision to construct the project is expected to be made by Progress following final regulatory approvals.
Mexican Pipelines
June 2011	The Guadalajara pipeline was completed. TransCanada and Mexico's Comisión Federal de Electricidad (CFE) have agreed to add a US$60 million compressor station to the pipeline.
February 2012	We signed a contract with the CFE for the approximately $500 million Tamazunchale Pipeline Extension Project. The project, which is supported by a 25-year contract with CFE, is a 30 inch pipeline with a capacity of 630 MMcf/d. Engineering, procurement and construction contracts have all been signed and construction related activities have begun. We expect the pipeline to be in-service in the first quarter of 2014.
November 2012	The CFE awarded us the Topolobampo pipeline. The project, which is supported by a 25-year contract with CFE, is a 30 inch pipeline with a capacity of 670 MMcf/d. We estimate total costs to be US$1 billion, and expect it to be in-service in mid-2016.
November 2012	The CFE awarded us the Mazatlan pipeline, from El Oro to Mazatlan, Mexico. The project, which is supported by a 25-year contract with CFE and interconnects with the Topolobampo project, is a 24 inch pipeline with a capacity of 200 MMcf/d. We estimate total costs to be US$400 million, and expect it to be in-service in 2016.

6 -- TransCanada Corporation

Date	Description of development
Alaska Pipeline Project
April 2010	The Alaska Pipeline open season commenced.
Third Quarter 2010	Interested shippers on the proposed Alaska Pipeline Project submitted conditional commercial bids in the open season that closed in July 2010. The Alaska Pipeline Project team continued to work with shippers to resolve conditional bids received as part of the project's open season in working toward a U.S. Federal Energy Regulatory Commission (FERC) application deadline of October 2012 for the Alberta option that would extend from Prudhoe Bay to points near Fairbanks and Delta Junction, and then to the Alaska/Canada border where the pipeline would connect with a new pipeline in Canada.
March 2012	The Alaska North Slope producers (Exxon Mobil Corporation, ConocoPhillips and British Petroleum (BP)), along with TransCanada through its participation in the Alaska Pipeline Project, announced the companies have agreed on a work plan aimed at commercializing North Slope natural gas resources through an LNG option. This would involve construction of a natural gas pipeline from the North Slope to Valdez, Alaska where the gas would be liquefied and shipped to international markets.
May 2012	We received approval from the State of Alaska to suspend and preserve our activities on the Alaska/Alberta route and focus on the LNG alternative. This allowed us to defer our obligation to file for a FERC certificate for the Alberta route beyond fall 2012, our original deadline.
July 2012	The Alaska Pipeline Project announced a non-binding public solicitation of interest in securing capacity on a potential new pipeline system to transport Alaska's North Slope gas. The solicitation of interest took place between August 2012 and September 2012. There were a number of non-binding expressions of interest from potential shippers from a broad range of industry sectors in North America and Asia.
ANR Pipeline
June 2012	The FERC issued orders approving ANR's sale of its offshore assets to a newly created wholly owned subsidiary, TC Offshore LLC, allowing TC Offshore LLC to operate these assets as a stand-alone interstate pipeline.
August 2012	The FERC approved ANR Storage Company's settlement with its shippers.
November 2012	TC Offshore LLC began commercial operations.
Gas Transmission Northwest LLC (GTN)
May 2011	TransCanada closed the sale of a 25 per cent interest in each of GTN and Bison Pipeline LLC (Bison) to TC PipeLines, LP for a total transaction value of $605 million, which included US$81 million or 25 percent of GTN's outstanding debt.
November 2011	The FERC approved a settlement agreement between GTN and its shippers for new transportation rates to be effective January 2012 through December 2015. This settlement also requires GTN to file for new rates that are to be effective January 2016.
Northern Border
January 2013	Northern Border secured a final settlement agreement with its shippers that the FERC approved in December 2012, effective January 2013. The settlement rates for long-haul transportation are approximately 11 per cent lower than 2012 rates and depreciation was lowered from 2.4 to 2.2 per cent. The settlement also includes a three-year moratorium on filing cases or challenging the settlement rates but Northern Border must initiate another rate proceeding within five years.
Great Lakes
July 2010	The FERC approved, without modification, the settlement stipulation agreement reached among Great Lakes Gas Transmission Limited Partnership, active participants and the FERC trial staff. As approved, the stipulation and agreement applies to all current and future shippers on Great Lakes. This settlement requires Great Lakes to file for new rates by November 1, 2013.
Bison
December 2010	Construction of Bison pipeline was completed.
January 2011	Bison pipeline was placed into commercial service.
May 2011	TransCanada closed the sale of a 25 per cent interest in each of GTN and Bison to TC PipeLines, LP for a total transaction value of $605 million, which included US$81 million or 25 percent of GTN's outstanding debt.

Further information about developments in the Natural Gas Pipelines business can be found in the MD&A in the About our business – A long-term strategy, Natural Gas Pipelines – Results, Natural Gas Pipelines – Outlook, Natural Gas Pipelines – Understanding the Natural Gas Pipelines business and Natural Gas Pipelines – Significant events sections, which sections of the MD&A are incorporated by reference herein.

2012 Annual information form -- 7

DEVELOPMENTS IN THE OIL PIPELINES BUSINESS

Date	Description of development
Gulf Coast Project
February 2012	We announced that what had previously been the Cushing to U.S. Gulf Coast portion of the Keystone XL Pipeline has its own independent value to the marketplace, and that we plan to build it as the stand-alone Gulf Coast Project, which is not part of the Keystone XL Presidential Permit process. We expect the 36-inch pipeline to have an initial capacity of up to 700,000 barrels per day (Bbl/d), and an ultimate capacity of 830,000 Bbl/d. We estimate the total cost of the project to be US$2.3 billion, and as of Year End, construction was approximately 35 per cent complete. US$300 million of the total cost is expected to be spent on the Houston Lateral pipeline, a 76 km (47 mile) pipeline that will transport crude oil to Houston refineries.
August 2012	Construction on the Gulf Coast Project commenced. We expect to place the pipeline in service at the end of 2013.
Keystone XL Pipeline
March 2010	The NEB approved TransCanada's application to construct and operate the Canadian portion of the Keystone U.S. Gulf Coast expansion.
April 2010	The U.S. Department of State (DOS) issued a Draft Environmental Impact Statement for Keystone XL.
June 2010	Keystone XL commenced operating at a reduced maximum operating pressure as the first section began delivering oil from Hardisty, Alberta to Wood River and Patoka in Illinois (Wood River/Patoka).
December 2010	The reduced maximum operating pressure restriction on the Canadian conversion section of the Wood River/Patoka section of Keystone was removed by the NEB following the completion of in-line inspections.
Fourth Quarter 2010	Construction of the second section of Keystone extending the pipeline from Steele City, Nebraska to Cushing, Oklahoma (the Cushing Extension) was completed, and line fill commenced in late 2010.
January 2011	Required operational modifications were completed on the Canadian conversion section of Keystone. As a result, the system was capable of operating at the approved design pressure.
February 2011	The commercial in service of the Cushing Extension was achieved, and the Company also commenced recording earnings for the Wood River/Patoka section.
May 2011	Revised tolls came into effect for the Wood River/Patoka section.
Second Quarter 2011	The U.S. Department of Transportation Pipeline and Hazardous Materials Safety Administration issued a corrective action order on Keystone as a result of two above-ground incidents at pump stations in North Dakota and Kansas. TransCanada filed a re-start plan with the U.S. Pipeline and Hazardous Material Safety Administration which was approved in June 2011.
August 2011	TransCanada received a Final Environmental Impact Statement regarding the Keystone XL U.S. Presidential Permit application.
November 2011	The DOS announced that further analysis of route options for Keystone XL would need to be investigated, with a specific focus on the Sandhills area of Nebraska.
December 2011	TransCanada announced that it received additional binding commitments in support of Keystone XL following the conclusion of the Keystone Houston Lateral open season, which commenced in August 2011.
February 2012	TransCanada sent a letter to the DOS informing the DOS that TransCanada planned to file a Presidential Permit application in near future for Keystone XL. TransCanada also informed the DOS that the Cushing to U.S. Gulf Coast portion of the Keystone XL project would be constructed as the Gulf Coast Project and not as part of the Presidential Permit process.
May 2012	TransCanada filed revised fixed tolls for the Cushing Extension section of the Keystone Pipeline System with both the NEB and the FERC. The revised tolls, which reflect the final project costs of the Keystone Pipeline System, became effective July 1, 2012.
May 2012	We filed a Presidential Permit application (cross-border permit) with the DOS for Keystone XL to transport crude oil from the U.S./Canada border in Montana to Steele City, Nebraska. We continued to work collaboratively with the Nebraska Department of Environmental Quality (NDEQ) and various other stakeholders throughout 2012 to determine an alternative route in Nebraska that would avoid the Nebraska Sandhills. We had proposed an alternative route to the NDEQ in April 2012, and then modified the route in response to comments from the NDEQ and other stakeholders.
September 2012	TransCanada submitted a Supplemental Environmental Report to the NDEQ for the proposed re-route for Keystone XL in Nebraska, and provided an environmental report to the DOS, required as part of the DOS review of our cross-border permit application.
January 2013	The NDEQ issued its final evaluation report on our proposed re-route of Keystone XL to the Governor of Nebraska. The report noted that the proposed re-route avoids the Nebraska Sandhills, and that construction and operation of Keystone XL is expected to have minimal environmental impacts in Nebraska. In January, the Governor of Nebraska approved our proposed re-route. The DOS is now completing their environmental and National Interest Determination review process and we are awaiting their decision on our cross-border permit application. We estimate the total cost of the project to be US$5.3 billion and, as of Year End, had invested US$1.8 billion. We expect the pipeline to be in-service in late 2014 or early 2015, subject to regulatory approvals.

8 -- TransCanada Corporation

Date	Description of development
Marketlink Projects
November 2010	The open seasons for the Bakken Marketlink and Cushing Marketlink projects, which commenced in September 2010, closed successfully.
October 2012	We have commenced construction on the Cushing Marketlink receipt facilities and expect to begin transporting crude oil supply from the Permian Basin producing region in western Texas to the U.S. Gulf Coast in late 2013 after our Gulf Coast Project is placed in-service. Our Bakken Marketlink project will transport crude oil supply from the Williston Basin producing region in North Dakota and Montana to Cushing, Oklahoma on facilities that form part of Keystone XL which remains subject to regulatory approval.
Keystone Hardisty Terminal
March 2012	We launched and concluded a binding open season to obtain commitments from interested parties for the Keystone Hardisty Terminal.
May 2012	We announced that we had secured binding long-term commitments of more than 500,000 Bbl/d for the Keystone Hardisty Terminal, and are expanding the proposed two million barrel project to a 2.6 million barrel terminal at Hardisty, Alberta, due to strong commercial support. We expect the terminal to be operational in late 2014 and cost approximately $275 million.
Northern Courier Pipeline
August 2012	We announced that we had been selected by Fort Hills Energy Limited Partnership to design, build, own and operate the proposed Northern Courier Pipeline. We estimate total capital costs to be $660 million. The pipeline system is fully subscribed under long-term contract to service the Fort Hills mine, which is jointly owned by Suncor Energy Inc, Total E&P Canada Ltd. and Teck Resources Limited. The project is conditional on the Fort Hills project receiving sanctions by the owners of the Fort Hills mine and is subject to regulatory approval.
Grand Rapids Pipeline
October 2012	We announced that we had entered into binding agreements with Phoenix Energy Holdings Limited (Phoenix) to develop the Grand Rapids Pipeline in northern Alberta. The project, which includes crude oil and diluent lines, will have the capacity to move up to 900,000 Bbl/d of crude oil and 330,000 Bbl/d of diluent. We and Phoenix will each own 50 per cent of the project and we will operate the system, which is expected to cost $3 billion. Phoenix has entered into a long-term commitment to ship crude oil and diluent on this pipeline. We expect the Grand Rapids Pipeline system, subject to regulatory approvals, to be placed in-service in multiple stages, with initial crude oil service by mid-2015 and the complete system in-service by the second half of 2017.
Canadian Mainline Conversion
Third Quarter 2012	We have determined that it is technically and economically feasible to convert a portion of the Canadian Mainline natural gas pipeline system to crude oil service. We are actively pursuing this project and have begun soliciting input from stakeholders and prospective shippers to determine market acceptance.

Further information about developments in the Oil Pipelines business can be found in the MD&A in the About our business – A long-term strategy, Oil Pipelines – Results, Oil Pipelines – Outlook, Oil Pipelines – Understanding the Oil Pipelines business and Oil Pipelines – Significant events sections, which sections of the MD&A are incorporated by reference herein.

2012 Annual information form -- 9

DEVELOPMENTS IN THE ENERGY BUSINESS

Date	Description of development
Sundance
Second Quarter 2010	Sundance B Unit 3 experienced an unplanned outage related to mechanical failure of certain generator components and was subject to a force majeure claim by TransAlta Corporation (TransAlta). The ASTC Power Partnership, which holds the Sundance B power purchase agreement (PPA), disputed the claim under the binding dispute resolution process provided in the PPA because we did not believe TransAlta's claim met the test of force majeure. We therefore recorded equity earnings from our 50 per cent ownership interest in ASTC Power Partnership as though this event were a normal plant outage.
December 2010	Sundance A Units 1 and 2 were withdrawn from service.
January 2011	Sundance A Units 1 and 2 were subject to a force majeure claim by TransAlta.
February 2011	TransAlta informed us that it was not economic to replace or repair Units 1 and 2, and that the Sundance A PPA should be terminated. We disputed both the force majeure and the economic destruction claims under the binding dispute resolution process provided in the PPA.
July 2012	An arbitration panel decided that the Sundance A PPA should not be terminated and ordered TransAlta to rebuild Units 1 and 2. The panel also limited TransAlta's force majeure claim from November 20, 2011 until the units can reasonably be returned to service. TransAlta announced that it expects the units to be returned to service in the fall of 2013. Since we considered the outages to be an interruption of supply, we accrued $188 million in pre-tax income between December 2010 and March 2012. The outcome of the decision was that we received approximately $138 million of this amount. We recorded the $50 million difference as a charge to second quarter 2012 earnings, of which $20 million related to amounts accrued in 2011. We will not record further revenue or costs from the PPA until the units are returned to service. The net book value of the Sundance A PPA recorded in Intangibles and Other Assets remains fully recoverable.
November 2012	An arbitration decision was reached with the arbitration panel granting partial force majeure relief to TransAlta with respect to Sundance B Unit, and we reduced our equity earnings by $11 million from the ASTC Power Partnership to reflect the amount that will not be recovered as result of the decision.
Napanee Generating Station
December 2012	We signed a contract with the Ontario Power Authority (OPA), to develop, own and operate a new 900 megawatt (MW) natural gas-fired power plant at Ontario Power Generation's Lennox site in Eastern Ontario in the town of Greater Napanee. The plant will replace the facility that was planned and subsequently cancelled in the community of Oakville, Ontario and will operate under a 20-year Clean Energy Supply contract with the OPA. We were reimbursed for $250 million of costs, mainly related to natural gas turbines that were purchased for the Oakville project, which will now be used at Napanee. We plan to invest approximately $1.0 billion in the Napanee facility.
Cartier Wind
November 2011	The Montagne-Sèche project and phase one of the Gros-Morne wind farm were completed.
November 2012	We placed the second phase of the Gros-Morne wind farm project in-service, completing the 590 MW, five-phase Cartier Wind Project in Québec. All of the power produced by Cartier Wind is sold to Hydro-Québec Distribution (Hydro-Québec) under 20-year PPAs.
Ontario Solar
December 2011	We agreed to buy nine Ontario solar projects (combined capacity of 86 MW) from Canadian Solar Solutions Inc. (Canadian Solar), for approximately $476 million. Under the terms of the agreement, Canadian Solar will develop and build each of the nine solar projects using photovoltaic panels. We will buy each project once construction and acceptance testing are complete and commercial operation begins. All power produced will be sold under 20-year PPAs with the OPA under the Feed-in Tariff program in Ontario. We expect to close the acquisition of the first two projects (combined capacity of 20 MW) in the first half of 2013 for a total cost of approximately $125 million. We expect to acquire the other seven projects in 2013 to late 2014, subject to regulatory approvals.
Bécancour
June 2011	Hydro-Québec notified us it would exercise its option to extend the agreement to suspend all electricity generation from Bécancour throughout 2012. Under the original agreement, Hydro-Québec has the option, to extend the suspension on an annual basis until such time as regional electricity demand levels recover. We continue to receive capacity payments under the agreement similar to those that would have been received under the normal course of operation.
June 2012	Hydro-Québec notified us that it would exercise its option to extend the agreement to suspend all electricity generation from the Bécancour power plant through 2013. Under the suspension agreement, Hydro-Québec has the option (subject to certain conditions) to extend the suspension every year until regional electricity demand levels recover. We continue to receive capacity payments while generation is suspended.

10 -- TransCanada Corporation

Date	Description of development
Bruce
February 2011	The Bruce Power Refurbishment Implementation Agreement (the BPRIA) was amended to extend the suspension date for Bruce A contingent support payments from December 31, 2011 to June 1, 2012. Contingent support payments received from the OPA by Bruce A are equal to the difference between the fixed prices under the BPRIA and spot market prices. As a result of the amendment, all output from Bruce A was subject to spot prices effective June 1, 2012 until the restart of both Units 1 and 2 was complete. Bruce Power and the OPA had amended certain terms and conditions of the BPRIA in July 2009, which included: amendments to the Bruce B floor price mechanism, the removal of a support payment cap for Bruce A, an amendment to the capital cost-sharing mechanism, and addition of a provision for deemed generation payments to Bruce Power at the contracted prices under circumstances where generation from Bruce A and Bruce B is reduced due to system curtailments on the Independent Electricity System Operator controlled grid in Ontario. Under the original BPRIA, which was signed in 2005, Bruce A committed to refurbish and restart the then currently idle Units 1 and 2, extend the operating life of Unit 3 and replace the steam generators on Unit 4. Fuelling of both Unit 2 and Unit 1 has now been completed and the final phases of commissioning for Unit 2 are underway. Subject to regulatory approval, Bruce Power expects to commence commercial operations of Unit 2 in first quarter 2012 and commercial operations of Unit 1 in third quarter 2012.
November 2011	Bruce Power commenced the West Shift Plus outage as part of the life extension strategy for Unit 3.
March 2012	Bruce Power received authorization from the Canadian Nuclear Safety Commission to power up the Unit 2 reactor.
May 2012	An incident occurred within the Unit 2 electrical generator on the non-nuclear side of the plant which delayed the synchronization of Unit 2 to the Ontario electrical grid. As a result, Bruce Power submitted a force majeure claim to the OPA.
June 2012	Bruce Power returned Unit 3 to service after completing the $300 million West Shift Plus life extension outage, which began in 2011. Unit 4 is expected to return to service in late first quarter 2013 after the completion of an expanded outage investment program that began in August 2012. These investments should allow Units 3 and 4 to produce low cost electricity until at least 2021.
August 2012	TransCanada confirmed that Bruce Power's force majeure claim to the OPA related to Unit 2 (Bruce A) had been accepted. The claim was the result of a May 2012 event that delayed the synchronization of this unit to the Ontario power grid. With the acceptance of the force majeure claim, Bruce Power continued to receive the contracted price for power generated from the operating units at Bruce A after July 1, 2012.
October 2012	Unit 1 and 2 were returned to service following the completion of the refurbishment. The incident in May 2012 within the Unit 2 electrical generator on the non-nuclear side of the plant had delayed returning the units to service. Bruce Power's force majeure claim to the OPA was accepted in August, and it continued to receive the contracted price for power generated during the force majeure period.
November 2012	Both Units 1 and 2 have operated at reduced output levels following their return to service, and Bruce Power took Unit 1 offline for an approximate one month maintenance outage. Bruce Power expects the availability percentages for Units 1 and 2 to increase over time, however, these units have not operated for an extended period of time and may experience slightly higher forced outage rates and reduced availability percentages in 2013. Overall plant availability for Bruce A is expected to be approximately 90 per cent in 2013.
Ravenswood
Third and Fourth Quarters 2011	Spot prices for capacity sales in the New York Zone J market were negatively impacted by the manner in which the New York Independent System Operator (NYISO) applied pricing rules for a power plant that had recently began service in this market. We jointly filed two formal complaints with the FERC challenging how the NYISO applied its buy-side mitigation rules affecting bidding criteria associated with two new power plants that began service in the New York Zone J markets during the summer of 2011.
June 2012	The FERC addressed the first complaint, indicating it would take steps to increase transparency and accountability for future mitigation exemption tests (MET) and decisions.
September 2012	The FERC granted an order on the second complaint, directing the NYISO to retest the two new power plants as well as a transmission project currently under construction using an amended set of assumptions to more accurately perform the MET calculations, in accordance with existing rules and tariff provisions. The recalculation was completed in November 2012 and it was determined that one of the plants had been granted an exemption in error. That exemption was revoked and the plant is now required to offer its capacity at a floor price which has put upward pressure on capacity auction prices since December. The order was prospective only and has no impact on capacity prices for prior periods.
CrossAlta
December 2012	We acquired the remaining 40 per cent interests in the Crossfield Gas Storage facility and CrossAlta Gas Storage & Services Ltd. marketing company from BP for approximately $220 million. We now own and operate 100 per cent of the interests of CrossAlta. The acquisition added an additional 27 billion cubic feet (Bcf) of working gas storage capacity to our existing portfolio in Alberta.
Coolidge
May 2011	Coolidge power generating station was completed and placed in-service.
Kibby Wind
October 2010	The 22 turbine, 66 MW second phase of Kibby Wind was completed and placed in service.
Halton Hills
September 2010	The 683 MW Halton Hills power plant was completed and placed in-service.

2012 Annual information form -- 11

Further information about developments in the Energy business can be found in the MD&A in the About our business – A long-term strategy, Energy – Results, Energy – Outlook, Energy – Understanding the Energy business and Energy – Significant events sections, which sections of the MD&A are incorporated by reference herein.

Business of TransCanada

We are a leading North American energy infrastructure company focused on Natural Gas Pipelines, Oil Pipelines and Energy. At Year End and for the year then ended, Natural Gas Pipelines accounted for approximately 53 per cent of revenues and 48 per cent of TransCanada's total assets, Oil Pipelines accounted for approximately 13 per cent of revenues and 22 per cent of TransCanada's total assets and Energy accounted for approximately 34 per cent of revenues and 27 per cent of TransCanada's total assets. The following table shows TransCanada's revenues from operations by segment, classified geographically, for the years ended December 31, 2012 and 2011.

Revenues from operations (millions of dollars)		2012	2011
Natural Gas Pipelines
	Canada – Domestic	$2,294	$2,180
	Canada – Export(1)	751	786
	United States	1,112	1,207
	Mexico	107	71
		4,264	4,244
Oil Pipelines
	Canada – Domestic	–	–
	Canada – Export(1)	370	300
	United States	669	527
		1,039	827
Energy(2)
	Canada – Domestic	1,233	1,749
	Canada – Export(1)	–	1
	United States	1,471	1,018
		2,704	2,768
Total revenues(3)		$8,007	$7,839

(1)

Exports include pipeline revenues attributable to deliveries to U.S. pipelines and power deliveries to U.S. markets.

(2)

Revenues include sales of natural gas.

(3)

Revenues are attributed to countries based on country of origin of product or service.

The following is a description of each of TransCanada's three main areas of operations.

12 -- TransCanada Corporation

NATURAL GAS PIPELINES BUSINESS
TransCanada delivers natural gas to local distribution companies, power generation facilities and other businesses across Canada, the U.S. and Mexico. Our Natural Gas Pipelines and related holdings are described below.

We are the operator of all of the following natural gas pipelines and storage assets except for Iroquois.

	Length	Description	Effective ownership
Canadian pipelines
Alberta System	24,337 km (15,122 miles)	Gathers and transports natural gas within Alberta and Northeastern B.C., and connects with the Canadian Mainline, Foothills system and third-party pipelines	100%
Canadian Mainline	14,101 km (8,762 miles)	Transports natural gas from the Alberta/Saskatchewan border to the Québec/Vermont border, and connects with other natural gas pipelines in Canada and the U.S.	100%
Foothills	1,241 km (771 miles)	Transports natural gas from central Alberta to the U.S. border for export to the U.S. Midwest, Pacific northwest, California and Nevada	100%
Trans Québec & Maritimes (TQM)	572 km (355 miles)	Connects with Canadian Mainline near the Ontario/Québec border to transport natural gas to the Montreal to Québec City corridor, and connects with the Portland pipeline system that serves the northeast U.S.	50%
U.S. pipelines
ANR Pipeline	16,656 km (10,350 miles)	Transports natural gas from producing fields in Texas and Oklahoma, from offshore and onshore regions of the Gulf of Mexico and from the U.S. midcontinent, for delivery mainly to Wisconsin, Michigan, Illinois, Indiana and Ohio. Connects with Great Lakes	100%
ANR Storage	250 Bcf	Provides regulated underground natural gas storage service from facilities located in Michigan
Bison	487 km (303 miles)	Transports natural gas from the Powder River Basin in Wyoming to Northern Border in North Dakota. We effectively own 83.3 per cent of the system through the combination of our 75 per cent direct ownership interest and our 33.3 per cent interest in TC PipeLines, LP	83.3%
GTN	2,178 km (1,353 miles)	Transports natural gas from the WCSB and the Rocky Mountain region to Washington, Oregon and California. Connects with Tuscarora and Foothills. We effectively own 83.3 per cent of the system through the combination of our 75 per cent direct ownership interest and our 33.3 per cent interest in TC PipeLines, LP	83.3%
Great Lakes	3,404 km (2,115 miles)	Connects with ANR and the Canadian Mainline near Emerson, Manitoba, to transport natural gas to eastern Canada, and the U.S. upper Midwest. We effectively own 69.0 per cent of the system through the combination of our 53.6 per cent direct ownership interest and our 33.3 per cent interest in TC PipeLines, LP	69%
Iroquois	666 km (414 miles)	Connects with Canadian Mainline near Waddington, New York to deliver natural gas to customers in the U.S. northeast	44.5%
North Baja	138 km (86 miles)	Transports natural gas between Ehrenberg, Arizona and Ogilby, California, and connects with a third-party natural gas system on the California/Mexico border. We effectively own 33.3 per cent of the system through our 33.3 per cent interest in TC PipeLines, LP	33.3%
Northern Border	2,265 km (1,407 miles)	Transports natural gas through the U.S. Midwest, and connects with Foothills near Monchy, Saskatchewan. We effectively own 16.7 per cent of the system through our 33.3 per cent interest in TC PipeLines, LP	16.7%
Portland	474 km (295 miles)	Connects with TQM near East Hereford, Québec, to deliver natural gas to customers in the U.S. northeast	61.7%
Tuscarora	491 km (305 miles)	Transports natural gas from GTN at Malin, Oregon to Wadsworth, Nevada, and delivers gas in northeastern California and northwestern Nevada. We effectively own 33.3 per cent of the system through our 33.3 per cent interest in TC PipeLines, LP.	33.3%

2012 Annual information form -- 13

	Length	Description	Effective ownership
Mexican pipelines
Guadalajara	310 km (193 miles)	Transports natural gas from Manzanillo to Guadalajara in Mexico	100%
Tamazunchale	130 km (81 miles)	Transports natural gas from Naranjos, Veracruz in east central Mexico to Tamazunchale, San Luis Potos, Mexico	100%
Under construction
Mazatlan Pipeline	413 km (257 miles)	To deliver natural gas from El Oro to Mazatlan, Mexico. Connects to the Topolobampo Pipeline Project	100%
Tamazunchale Pipeline Extension	235 km (146 miles)	Extend existing terminus of the Tamazunchale Pipeline to deliver natural gas to power generating facilities in El Sauz, Queretaro, Mexico	100%
Topolobampo Pipeline	530 km (329 miles)	To deliver natural gas from Chihuahua to Topolobampo, Mexico	100%
In development
Alaska Pipeline Project	2,737 km (1,700 miles)	To transport natural gas from Prudhoe Bay to Alberta, or from Prudhoe Bay to LNG facilities in south-central Alaska. We have an agreement with ExxonMobil to jointly advance the projects
Coastal GasLink	650 km* (404 miles)	To deliver natural gas from the Montney gas-producing region near Dawson Creek, B.C. to LNG Canada's proposed LNG facility near Kitimat, B.C.
Prince Rupert Gas Transmission Project	750 km* (466 miles)	To deliver natural gas from North Montney gas producing region near Fort St. John, B.C. to the proposed Pacific Northwest LNG facility near Prince Rupert, B.C.

*

Pipe lengths are estimates as final route is still under design.

Further information about the Company's pipeline holdings, developments and opportunities and significant regulatory developments which relate to Natural Gas Pipelines can be found in the MD&A in the Natural Gas Pipelines – Results, Natural Gas Pipelines – Understanding the Natural Gas Pipelines business and Natural Gas Pipelines – Significant events sections, which sections of the MD&A are incorporated by reference herein.

OIL PIPELINES BUSINESS
TransCanada contracts and delivers North American crude oil supply to key U.S. markets. Our Oil Pipelines and related holdings are described below.

We are the operator of all of the following pipelines and properties.

	Length	Description	Ownership
Oil pipelines
Keystone Pipeline System	3,467 km (2,154 miles)	Transports crude oil from Hardisty, Alberta, to U.S. markets at Wood River and Patoka in Illinois, and to Cushing, Oklahoma	100%
Under construction
Cushing Marketlink	Crude oil receipt facilities	To transport crude oil from the Permian Basin producing region in western Texas to the U.S. Gulf Coast refining market on facilities that form part of the Gulf Coast Project	100%
Gulf Coast Project	780 km (485 miles)	To transport crude oil from the hub at Cushing, Oklahoma to the U.S. Gulf Coast refinery market. Includes the 76 km (47 mile) Houston Lateral pipeline	100%
Keystone Hardisty Terminal	Crude oil terminal	Crude oil terminal to be located at Hardisty, Alberta, providing Western Canadian producers with new crude oil batch accumulation tankage and pipeline infrastructure and access to the Keystone Pipeline System	100%

14 -- TransCanada Corporation

	Length	Description	Ownership
In development
Bakken Marketlink	Crude oil receipt facilities	To transport crude oil from the Williston Basin producing region in North Dakota and Montana to Cushing, Oklahoma on facilities that form part of Keystone XL	100%
Canadian Mainline conversion		Conversion of a portion of the Canadian Mainline natural gas pipeline system to crude oil service, which will transport crude oil between Hardisty, Alberta and markets in eastern Canada	100%
Grand Rapids Pipeline	500 km (300 miles)	To transport crude oil between the producing area northwest of Fort McMurray and the Edmonton/Heartland market region. Project is a partnership with Phoenix	50%
Keystone XL	1,897 km (1,179 miles)	Pipeline from Hardisty, Alberta to Steele City, Nebraska to expand capacity of the Keystone Pipeline System to 1.4 million Bbl/d. Awaiting U.S. Presidential Permit decision	100%
Northern Courier Pipeline	90 km (56 miles)	To transport bitumen and diluent between the Fort Hills mine site and the Voyageur Upgrader located north of Fort McMurray, Alberta	100%

Further information about the Company's pipeline holdings, developments and opportunities and significant regulatory developments which relate to Oil Pipelines can be found in the MD&A in the Oil Pipelines – Results, Oil Pipelines – Understanding the Oil Pipelines business and Oil Pipelines – Significant events sections, which sections of the MD&A are incorporated by reference herein.

REGULATION OF THE NATURAL GAS AND OIL PIPELINES BUSINESSES

Canada

Natural Gas Pipelines
Under the terms of the National Energy Board Act (Canada), the Canadian Mainline, the Alberta System and other Canadian pipelines owned or operated by TransCanada (collectively, the Systems) are regulated by the NEB. The NEB sets tolls that provide TransCanada the opportunity to recover costs of transporting natural gas, including the return of capital (depreciation) and return on the average investment base for each of the Systems. In addition, new facilities on or associated with the Systems are approved by the NEB before construction begins and the NEB regulates the operations of each of the Systems. Net earnings of the Systems may be affected by changes in investment base, the allowed return on equity, and any incentive earnings.

Natural Gas Pipeline Projects
The Coastal GasLink Pipeline and the Prince Rupert Gas Transmission projects are being proposed and developed primarily under the regulatory regime administered by the B.C. Oil and Gas Commission (BCOGC) and the B.C. Environmental Assessment Office (BCEAO). The BCOGC is responsible for overseeing oil and gas operations in B.C., including exploration, development, pipeline transportation and reclamation. The BCEAO is an agency that manages the review of proposed major projects in B.C., as required by the B.C. Environmental Assessment Act. Both projects are also subject to the provisions of the Canadian Environmental Assessment Act. Pre-application activities are currently underway with the BCOGC and BCEAO as well as the Canadian Environmental Assessment Agency.

Oil Pipelines
The NEB regulates the terms and conditions of service, including rates, and the physical operation of the Canadian portion of the Keystone Pipeline System, including the Keystone Hardisty Terminal. NEB approval is also required for facility additions. The rates for transportation service on the Keystone Pipeline System are calculated in accordance with a methodology agreed to in transportation service agreements between Keystone and its shippers, and approved by the NEB.

Oil Pipeline Projects
The Northern Courier Pipeline and Grand Rapids Pipeline projects are being proposed and developed primarily under the regulatory regime administered by the Alberta Energy Resources Conservation Board (ERCB) and Alberta Environment and Sustainable Resource Development (ESRD). ERCB approval is required to construct and operate the pipelines and associated facilities. ESRD approval is required to construct and operate a tank terminal when the project involves the storage of more than 10,000 cubic meters (62,898 Bbl/d) of refined petroleum products. Pre-application activities are currently underway.

United States

Natural Gas Pipelines
TransCanada's wholly owned and partially owned U.S. pipelines are considered natural gas companies operating under the provisions of the Natural Gas Act of 1938 and the Natural Gas Policy Act of 1978, and are subject to the jurisdiction of the FERC. The Natural Gas

2012 Annual information form -- 15

Act of 1938 grants the FERC authority over the construction and operation of pipelines and related facilities. The FERC also has authority to regulate rates for natural gas transportation and interstate commerce. The ANR System's natural gas storage facilities in Michigan are also regulated by FERC.

Oil Pipelines
The FERC also regulates the terms and conditions of service, including transportation rates, on the U.S. portion of the Keystone Pipeline System. Certain states in which Keystone Pipeline System has rights of way also regulate construction and siting of Keystone Pipeline System. The Keystone XL pipeline remains subject to the DOS decision on TransCanada's Presidential Permit application.

Mexico

Natural Gas Pipelines
TransCanada's pipelines in Mexico are regulated by the Comisión Reguladora de Energía or Energy Regulatory Commission (CRE). The CRE regulates the construction and operation of pipeline facilities including the approval of tariffs, services and related rates. However, the contracts underpinning the facilities in Mexico are long-term negotiated rate contracts and not subject to further regulatory approval.

ENERGY BUSINESS
TransCanada's Energy business includes a portfolio of power generation assets in Canada and the U.S., and unregulated natural gas storage assets in Alberta. This segment of our business includes the acquisition, development, construction, ownership and operation of electrical power generation plants, the purchase and marketing of electricity, the provision of electricity account services to energy and industrial customers, and the development, construction, ownership and operation of natural gas storage in Alberta. Our Energy assets and related holdings are described below.

We are the operator of all of our Energy assets, except for the Sheerness, Sundance A and Sundance B PPAs, Cartier Wind, Bruce A and B and Portlands Energy.

	Generating capacity (MW)	Type of fuel	Description	Location	Ownership
Canadian Power
8,070 MW of power generation capacity (including facilities in development)
Western Power
2,636 MW of power supply in Alberta and the western U.S.
Bear Creek	80	natural gas	Cogeneration plant	Grand Prairie, Alberta	100%
Cancarb	27	natural gas, waste heat	Facility fuelled by waste heat from an adjacent TransCanada facility that produces thermal carbon black, a by-product of natural gas	Medicine Hat, Alberta	100%
Carseland	80	natural gas	Cogeneration plant	Carseland, Alberta	100%
Coolidge(1)	575	natural gas	Simple-cycle peaking facility	Coolidge, Arizona	100%
Mackay River	165	natural gas	Cogeneration plant	Fort McMurray, Alberta	100%
Redwater	40	natural gas	Cogeneration plant	Redwater, Alberta	100%
Sheerness PPA	756	coal	PPA for entire output of facility	Hanna, Alberta	100%
Sundance A PPA	560	coal	PPA for entire output of facility	Wabamun, Alberta	100%
Sundance B PPA (Owned by ASTC Power Partnership(2))	353(3)	coal	PPA for entire output of facility	Wabamun, Alberta	50%
Eastern Power
2,950 MW of power generation capacity (including facilities in development)
Bécancour	550	natural gas	Cogeneration plant	Trois-Rivières, Québec	100%
Cartier Wind	366(3)	wind	Five wind power projects	Gaspésie, Québec	62%
Grandview	90	natural gas	Cogeneration plant	Saint John, New Brunswick	100%
Halton Hills	683	natural gas	Combined-cycle plant	Halton Hills, Ontario	100%
Portlands Energy	275(3)	natural gas	Combined-cycle plant	Toronto, Ontario	50%

16 -- TransCanada Corporation

	Generating capacity (MW)	Type of fuel	Description	Location	Ownership
Bruce Power
2,484 MW of power generation capacity through eight nuclear power units
Bruce A	1,4623	nuclear	Four operating reactors	Tiverton, Ontario	48.9%
Bruce B	1,0223	nuclear	Four operating reactors	Tiverton, Ontario	31.6%
U.S. Power
3,755 MW of power generation capacity
Kibby Wind	132	wind	Wind farm	Kibby and Skinner Townships, Maine	100%
Ocean State Power	560	natural gas	Combined-cycle plant	Burrillville, Rhode Island	100%
Ravenswood	2,480	natural gas and oil	Multiple-unit generating facility using dual fuel-capable steam turbine, combined-cycle and combustion turbine technology	Queens, New York	100%
TC Hydro	583	hydro	13 hydroelectric facilities, including stations and associated dams and reservoirs	New Hampshire, Vermont and Massachusetts (on the Connecticut and Deerfield rivers)	100%
Unregulated natural gas storage
118 Bcf of non-regulated natural gas storage capacity
CrossAlta	68 Bcf4		Underground facility connected to Alberta System	Crossfield, Alberta	100%
Edson	50 Bcf		Underground facility connected to Alberta System	Edson, Alberta	100%
In development
Napanee	900	natural gas	Proposed combined-cycle plant	Greater Napanee, Ontario	100%
Ontario Solar	86	solar	Nine solar projects from Canadian Solar Solutions Inc. We expect to acquire the first two projects in the first half of 2013, and the remaining seven projects in 2013 to late 2014	Southern Ontario and New Liskeard, Ontario	100%

(1)

Located in Arizona, results reported in Canadian Power – Western Power.

(2)

We have a 50 per cent interest in ASTC Power Partnership, which has a PPA in place for 100 per cent of the production from the Sundance B power generating facilities.

(3)

Our share of power generation capacity.

(4)

Reflects the acquisition of an additional 27 Bcf of working gas storage capacity in December 2012.

2012 Annual information form -- 17

We own or have the rights to approximately 2,600 MW of power supply in Alberta and Arizona, through three long-term PPAs, five natural gas-fired cogeneration facilities, and through Coolidge, a simple-cycle, natural gas peaking facility in Arizona.

Power purchased under long-term contracts is as follows:

	Type of contract	With	Expires
Sheerness PPA	Power purchased under a 20-year PPA	ATCO Power and TransAlta Utilities Corporation	2020
Sundance A PPA	Power purchased under a 20-year PPA	TransAlta Utilities Corporation	2017
Sundance B PPA	Power purchased under a 20-year PPA (we own 50% through the ASTC Partnership)	TransAlta Utilities Corporation	2020

Power sold under long-term contracts is as follows:

	Type of contract	With	Expires
Coolidge	Power sold under a 20-year PPA	Salt River Project Agricultural Improvements & Power District	2031

We own or are developing approximately 3,000 MW of power generation capacity in eastern Canada. All of the power produced by these assets is sold under contract. Disciplined maintenance of plant operations is critical to the results of our eastern power assets, where earnings are based on plant availability and performance.

Assets currently operating under long-term contracts are as follows:

	Type of contract	With	Expires
Bécancour1	20-year PPA	Hydro-Québec	2026
	Steam sold to an industrial customer
Cartier Wind	20-year PPA	Hydro-Québec	2032
Grandview	20-year tolling agreement to buy 100 per cent of heat and electricity output	Irving Oil	2025
Halton Hills	20-year Clean Energy Supply contract	OPA	2030
Portlands Energy	20-year Clean Energy Supply contract	OPA	2029

(1)

Power generation has been suspended since 2008.

Assets currently in development are as follows:

	Type of contract	With	Expires
Ontario Solar	20-year Feed-in Tariff (FIT) contracts	OPA	20 years from in-service date
Napanee	20-year Clean Energy Supply contract	OPA	20 years from in-service date

We own approximately 3,800 MW of power generation capacity in New York and New England, including plants powered by natural gas, oil, hydro and wind.

We own or control 156 Bcf of non-regulated natural gas storage capacity in Alberta. This includes contracts for long-term, Alberta-based storage capacity from a third party, which expire in 2030, subject to early termination rights in 2015. This business operates independently from our regulated natural gas transmission business and from ANR's regulated storage business, which are included in our Natural Gas Pipelines segment.

Further information about the Company's Energy holdings and significant developments and opportunities in relation to Energy can be found in the MD&A in the Energy – Results, Energy – Understanding the Energy business and Energy – Significant events sections, which sections of the MD&A are incorporated by reference herein.

18 -- TransCanada Corporation

General

EMPLOYEES
At Year End, TransCanada's principal operating subsidiary, TCPL, had approximately 4,900 full time active employees, substantially all of whom were employed in Canada and the U.S., as set forth in the following table.

Calgary	2,247
Western Canada (excluding Calgary)	495
Houston	549
U.S. Midwest	468
U.S. Northeast	414
Eastern Canada	268
U.S. Southeast/Gulf Coast	275
U.S. West Coast	80
Mexico and South America	73
Total	4,869

HEALTH, SAFETY AND ENVIRONMENTAL PROTECTION AND SOCIAL POLICIES
The Health, Safety and Environment committee monitors compliance with our health, safety and environment (HSE) corporate policy through regular reporting from management. We have an integrated HSE management system that establishes a framework for managing HSE issues and is used to capture, organize and document our related policies, programs and procedures.

Our management system for HSE is modeled after international standards for environmental management systems, conforms to external industry consensus standards and voluntary regulatory programs, and complies with applicable legislative requirements and various other internal management systems. It follows a continuous improvement cycle organized into four key areas:

•

Planning: risk and regulatory assessment, objectives and targets, and structure and responsibility

•

Implementing: development and implementation of programs, procedures and practices aimed at operational risk management

•

Reporting: document and records management, communication and reporting, and

•

Action: ongoing audit and review of HSE performance.

The committee reviews HSE performance quarterly compared to previously set targets relating thereto, and taking into account incidents and highlights of performance in this regard during the relevant quarter, and reviews program plans and performance targets for subsequent years. It receives detailed reports on our operational risk management, including governance of these risks, operational performance and preventive maintenance, pipeline integrity, operational risk issues and applicable legislative developments. The committee also receives updates on any specific areas of operational risk management review currently being conducted by management.

Environmental policies
TransCanada's facilities are subject to federal, state, provincial, and local environmental statutes and regulations governing environmental protection, including, but not limited to, air emissions and greenhouse gas emissions, water quality, wastewater discharges and waste management. Such laws and regulations generally require facilities to obtain or comply with a wide variety of environmental registrations, licences, permits and other approvals and requirements. Failure to comply with these laws and regulations may result in the assessment of administrative, civil or criminal penalties, the imposition of remedial requirements and/or the issuance of orders respecting future operations. We have implemented inspection and audit programs designed to keep all of our facilities in compliance with environmental requirements.

Safety and asset integrity
As one of TransCanada's priorities, safety is an integral part of the way our employees work. Since 2008, we have sustained year over year improvement in our safety performance. Overall, TransCanada's incident frequency rates in 2012 continued to be better than most industry benchmarks.

The safety and integrity of our existing and newly-developed infrastructure is also a top priority. All new assets are designed, constructed and commissioned with full consideration given to safety and integrity, and are brought in service only after all necessary requirements have been satisfied. Our pipeline safety record in 2012 continued to be better than industry benchmarks.

2012 Annual information form -- 19

TransCanada routinely conducts emergency response field exercises to help ensure effective coordination between the Company, local emergency responders, regulatory agencies and members of the public in the event of an emergency. It also facilitates improving our emergency preparedness and response program and procedures.

Aboriginal, Native American and stakeholder engagement
TransCanada has a number of policies, guiding principles and practices in place to help manage stakeholder engagement. TransCanada has adopted a code of business ethics which applies to our employees that is based on the Company's four core values of integrity, collaboration, responsibility and innovation, which guide the interaction between and among the Company's employees and serve as a standard for TransCanada in our dealings with all stakeholders. The code may be viewed on our website (www.transcanada.com).

Our approach to stakeholder engagement is based on building relationships, mutual respect and trust while recognizing the unique values, needs and interests of each community. Key principles that guide TransCanada's engagement include: the Company's respect for the diversity of Aboriginal/Native American communities and recognition of the importance of the land to these communities; and our belief in engaging stakeholders from the earliest stages of our projects, through the project development process and into operations.

Risk factors

A discussion of the Company's risk factors can be found in the MD&A in the Natural Gas Pipelines – Business risks, Oil Pipelines – Business risks, Energy – Business risks and Other information – Risks and risk management sections, which sections of the MD&A are incorporated by reference into this AIF.

Dividends

The Board has not adopted a formal dividend policy. The Board reviews the financial performance of TransCanada quarterly and makes a determination of the appropriate level of dividends to be declared in the following quarter. Currently, TransCanada's payment of dividends is primarily funded from dividends it receives as the sole common shareholder of TCPL. Provisions of various trust indentures and credit arrangements to which TCPL is a party restrict TCPL's ability to declare and pay dividends to TransCanada under certain circumstances and, if such restrictions apply, they may, in turn, have an impact on TransCanada's ability to declare and pay dividends. In the opinion of TransCanada's management, such provisions do not currently restrict or alter TransCanada's ability to declare or pay dividends.

Holders of cumulative redeemable first preferred shares, series 1 (Series 1 preferred shares) are entitled to receive fixed cumulative preferential cash dividends, at an annual rate of $1.15 per share, payable quarterly, as and when declared by the Board, for the initial five year period ending December 31, 2014. The dividend on the Series 1 preferred shares will reset on December 31, 2014 and every five years thereafter to a rate equal to the sum of the then five year Government of Canada bond yield and 1.92 per cent. The holders of Series 1 preferred shares have the right to convert their shares into cumulative redeemable first preferred shares, series 2 (the Series 2 preferred shares) as set out under the heading First preferred shares below.

Holders of cumulative redeemable first preferred shares, series 3 (Series 3 preferred shares) are entitled to receive fixed cumulative preferential cash dividends, at an annual rate of $1.00 per share, payable quarterly, as and when declared by the Board, for the initial five year period ending June 30, 2015. The dividend on the Series 3 preferred shares will reset on June 30, 2015 and every five years thereafter to a rate equal to the sum of the then five year Government of Canada bond yield and 1.28 per cent. The holders of Series 3 preferred shares have the right to convert their shares into cumulative redeemable first preferred shares, series 4 (the Series 4 preferred shares) as set out under the heading First preferred shares below.

Holders of cumulative redeemable first preferred shares, series 5 (Series 5 preferred shares) are entitled to receive fixed cumulative preferential cash dividends, at an annual rate of $1.10 per share, payable quarterly, as and when declared by the Board, for the initial five and a half year period ending January 30, 2016. The dividend on the Series 5 preferred shares will reset on January 30, 2016 and every five years thereafter to a rate equal to the sum of the then five year Government of Canada bond yield and 1.54 per cent. The holders of Series 5 preferred shares have the right to convert their shares into cumulative redeemable first preferred shares, series 6 (the Series 6 preferred shares) as set out under the heading First preferred shares below.

20 -- TransCanada Corporation

The dividends declared on the Series 1, 3 and 5 preferred shares during the past three completed financial years are set out in the following table:

	2012	2011	2010
Dividends declared on Series 1 preferred shares	$1.15	$1.15	$1.15
Dividends declared on Series 3 preferred shares	$1.00	$1.00	$0.80	(1)
Dividends declared on Series 5 preferred shares	$1.10	$1.10	$0.65	(2)

(1)

Reflects dividends declared for the period from issuance on March 11, 2010 to December 31, 2010.

(2)

Reflects dividends declared per share for the period from issuance on June 29, 2010 to December 31, 2010.

The dividends declared per common share of TransCanada during the past three completed financial years are set out in the following table:

	2012	2011	2010
Dividends declared on common shares	$1.76	$1.68	$1.60

In February 2013, the Board approved an increase in the quarterly dividend on our outstanding common shares by five per cent to $0.46 per share from $0.44 per share for the quarter ending March 31, 2013.

Description of capital structure

SHARE CAPITAL
TransCanada's authorized share capital consists of an unlimited number of common shares, of which 705,461,386 were issued and outstanding at Year End, and an unlimited number of first preferred shares and second preferred shares, issuable in series, of which 22,000,000 Series 1 preferred shares, 14,000,000 Series 3 preferred shares and 14,000,000 Series 5 preferred shares are issued and outstanding. The following is a description of the material characteristics of each of these classes of shares.

Common shares
The common shares entitle the holders thereof to one vote per share at all meetings of shareholders, except meetings at which only holders of another specified class of shares are entitled to vote, and, subject to the rights, privileges, restrictions and conditions attaching to the first preferred shares and the second preferred shares, whether as a class or a series, and to any other class or series of shares of TransCanada which rank prior to the common shares, entitle the holders thereof to receive (i) dividends if, as and when declared by the Board out of the assets of TransCanada properly applicable to the payment of the dividends in such amount and payable at such times and at such place or places as the Board may from time to time determine and (ii) the remaining property of TransCanada upon a dissolution.

TransCanada has a shareholder rights plan that is designed to ensure, to the extent possible, that all shareholders of TransCanada are treated fairly in connection with any take-over bid for the Company. The plan creates a right attaching to each common share outstanding and to each common share subsequently issued. Each right becomes exercisable ten trading days after a person has acquired (an acquiring person), or commences a take-over bid to acquire, 20 per cent or more of the common shares, other than by an acquisition pursuant to a take-over bid permitted under the terms of the plan (a permitted bid). Prior to a flip-in event (as described below), each right permits registered holders to purchase from the Company common shares of TransCanada at the exercise price equal to three times the market price of such shares, subject to adjustments and anti-dilution provisions (the exercise price). The beneficial acquisition by any person of 20 per cent or more of the common shares, other than by way of permitted bid, is referred to as a flip-in event. Ten trading days after a flip-in event, each TransCanada right will permit registered holders other than an acquiring person to receive, upon payment of the exercise price, the number of common shares with an aggregate market price equal to twice the exercise price. Continuation of, and amendments to, the Shareholder rights plan will be voted on at the 2013 annual and special meeting of shareholders.

TransCanada has a dividend reinvestment and share purchase plan (DRP) which permits common and preferred shareholders of TransCanada and preferred shareholders of TCPL to elect to reinvest their cash dividends in additional common shares of TransCanada. Commencing with dividends declared in April 2011, common shares purchased with reinvested cash dividends were satisfied with shares acquired on the open market at 100 per cent of the weighted average purchase price. Previously, common shares were provided to the participants at a discount to the average market price in the five days before dividend payment, and shares provided in lieu of dividends were issued from treasury. The discount was set at three per cent in 2010, and was reduced to two per cent commencing

2012 Annual information form -- 21

with the dividends declared in February 2011. Participants may also make additional cash payments of up to $10,000 per quarter to purchase additional common shares, which optional purchases are not eligible for any discount on the price of common shares. Participants are not responsible for payment of brokerage commissions or other transaction expenses for purchases made pursuant to the DRP.

TransCanada also has stock-based compensation plans that allow some employees to purchase common shares of TransCanada. Option exercise prices are equal to the closing price on the Toronto Stock Exchange (TSX) on the last trading day immediately preceding the grant date. Options granted under the plans are generally fully exercisable after three years and expire seven years after the date of grant. At our 2013 annual and special meeting of shareholders, TransCanada's shareholders will vote on reconfirming our stock option plan and any amendments as described in TransCanada's Management Information Circular dated February 11, 2013.

First preferred shares
Subject to certain limitations, the Board may, from time to time, issue first preferred shares in one or more series and determine for any such series, its designation, number of shares and respective rights, privileges, restrictions and conditions. The first preferred shares as a class have, among others, the provisions described below.

The first preferred shares of each series rank on a parity with the first preferred shares of every other series, and are entitled to preference over the common shares, the second preferred shares and any other shares ranking junior to the first preferred shares with respect to the payment of dividends, the repayment of capital and the distribution of assets of TransCanada in the event of its liquidation, dissolution or winding up.

Except as provided by the CBCA or as referred to below, the holders of the first preferred shares will not have any voting rights nor will they be entitled to receive notice of or to attend shareholders' meetings. The holders of any particular series of first preferred shares will, if the directors so determine prior to the issuance of such series, be entitled to such voting rights as may be determined by the directors if TransCanada fails to pay dividends on that series of preferred shares for any period as may be so determined by the directors.

The provisions attaching to the first preferred shares as a class may be modified, amended or varied only with the approval of the holders of the first preferred shares as a class. Any such approval to be given by the holders of the first preferred shares may be given by the affirmative vote of the holders of not less than sixty-six and two-thirds per cent of the first preferred shares represented and voted at a meeting or adjourned meeting of such holders.

The Series 1 preferred shares are entitled to the payment of dividends as set out above under the heading Dividends. The Series 1 preferred shares are redeemable by TransCanada in whole or in part on December 31, 2014, and on December 31 in every fifth year thereafter, by the payment of an amount in cash for each share to be redeemed equal to $25.00 plus all accrued and unpaid dividends thereon. The holders of Series 1 preferred shares have the right to convert their shares into cumulative redeemable Series 2 preferred shares, subject to certain conditions, on December 31, 2014 and on December 31 in every fifth year thereafter. The holders of Series 2 preferred shares will be entitled to receive quarterly floating rate cumulative preferential cash dividends, as and when declared by the Board, at a rate equal to the sum of the then 90-day Government of Canada treasury bill rate and 1.92 per cent and have the right to convert their shares into Series 1 preferred shares, subject to certain conditions, on December 31, 2019 and on December 31 in every fifth year thereafter. In the event of liquidation, dissolution or winding up of TransCanada, the holders of Series 1 preferred shares shall be entitled to receive $25.00 per Series 1 preferred share plus all accrued and unpaid dividends thereon in preference over the common shares or any other shares ranking junior to the Series 1 preferred shares. Other than with respect to redemption rights (as described below), the material characteristics of the Series 2 preferred shares are substantially the same as the Series 1 preferred shares. The Series 2 preferred shares are redeemable by TransCanada in whole or in part on any date after December 31, 2014, by the payment of an amount in cash for each share to be redeemed equal to (i) $25.00 in the case of redemptions on December 31, 2019 and on December 31 in every fifth year thereafter, or (ii) $25.50 in the case of redemptions on any other date, in each case plus all accrued and unpaid dividends thereon.

The Series 3 preferred shares are entitled to the payment of dividends as set out above under the heading Dividends. The rights, privileges, restrictions and conditions attaching to the Series 3 preferred shares are substantially identical to those attaching to the Series 1 preferred shares, except as outlined below. The Series 3 preferred shares are redeemable by TransCanada in whole or in part on June 30, 2015, and on June 30, 2015 and in every fifth year thereafter, by the payment of an amount in cash for each share to be redeemed equal to $25.00 plus all accrued and unpaid dividends thereon. The holders of Series 3 preferred shares have the right to convert their shares into cumulative redeemable Series 4 preferred shares, subject to certain conditions, on June 30, 2015 and on June 30 in every fifth year thereafter. The holders of Series 4 preferred shares will be entitled to receive quarterly floating rate cumulative preferential cash dividends, as and when declared by the Board, at a rate equal to the sum of the then 90-day Government of Canada treasury bill rate and 1.28 per cent and have the right to convert their shares into Series 3 preferred shares, subject to certain conditions, on June 30, 2020 and on June 30 in every fifth year thereafter. In the event of liquidation, dissolution or winding up of

22 -- TransCanada Corporation

TransCanada, the holders of Series 3 preferred shares shall be entitled to receive $25.00 per Series 3 preferred share plus all accrued and unpaid dividends thereon in preference over the common shares or any other shares ranking junior to the Series 3 preferred shares. Other than with respect to redemption rights (as described below), the material characteristics of the Series 4 preferred shares are substantially the same as the Series 3 preferred shares. The Series 4 preferred shares are redeemable by TransCanada in whole or in part on any date after June 30, 2015, by the payment of an amount in cash for each share to be redeemed equal to (i) $25.00 in the case of redemptions on June 30, 2020 and on June 30 in every fifth year thereafter, or (ii) $25.50 in the case of redemptions on any other date, in each case plus all accrued and unpaid dividends thereon.

The Series 5 preferred shares are entitled to the payment of dividends as set out above under the heading Dividends. The rights, privileges, restrictions and conditions attaching to the Series 5 preferred shares are substantially identical to those attaching to the Series 1 preferred shares, except as outlined below. The Series 5 preferred shares are redeemable by TransCanada in whole or in part on January 30, 2016, and on January 30 in every fifth year thereafter, by the payment of an amount in cash for each share to be redeemed equal to $25.00 plus all accrued and unpaid dividends thereon. The holders of Series 5 preferred shares have the right to convert their shares into cumulative redeemable Series 6 preferred shares, subject to certain conditions, on January 30, 2016 and on January 30 in every fifth year thereafter. The holders of Series 6 preferred shares will be entitled to receive quarterly floating rate cumulative preferential cash dividends, as and when declared by the Board, at a rate equal to the sum of the then 90-day Government of Canada treasury bill rate and 1.54 per cent and have the right to convert their shares into Series 5 preferred shares, subject to certain conditions, on January 30, 2021 and on January 30 in every fifth year thereafter. In the event of liquidation, dissolution or winding up of TransCanada, the holders of Series 5 preferred shares shall be entitled to receive $25.00 per Series 5 preferred share plus all accrued and unpaid dividends thereon in preference over the common shares or any other shares ranking junior to the Series 5 preferred shares. Other than with respect to redemption rights (as described below), the material characteristics of the Series 6 preferred shares are substantially the same as the Series 5 preferred shares. The Series 6 preferred shares are redeemable by TransCanada in whole or in part on any date after January 30, 2016, by the payment of an amount in cash for each share to be redeemed equal to (i) $25.00 in the case of redemptions on January 30, 2021 and on January 30 in every fifth year thereafter, or (ii) $25.50 in the case of redemptions on any other date, in each case plus all accrued and unpaid dividends thereon.

Except as provided by the CBCA, the respective holders of the Series 1, 2, 3, 4, 5 and 6 preferred shares are not entitled to receive notice of, attend at, or vote at any meeting of shareholders unless and until TransCanada shall have failed to pay eight quarterly dividends on such series of preferred shares, whether or not consecutive, in which case the respective holders of Series 1, 2, 3, 4, 5 and 6 preferred shares shall have the right to receive notice of and to attend each meeting of shareholders at which directors are to be elected and which take place more than 60 days after the date on which the failure first occurs, and to one vote with respect to resolutions to elect directors for each Series 1, 2, 3, 4, 5 and 6 preferred share, respectively, until all arrears of dividends have been paid. Subject to the CBCA, the series provisions attaching to the Series 1, 2, 3, 4, 5 or 6 preferred shares may be amended with the written approval of all the holders of such series of shares outstanding or by at least two-thirds of the votes cast at a meeting of the holders of such shares duly called for the purpose and at which a quorum is present.

Second preferred shares
The rights, privileges, restrictions and conditions attaching to the second preferred shares are substantially identical to those attaching to the first preferred shares, except that the second preferred shares are junior to the first preferred shares with respect to the payment of dividends, repayment of capital and the distribution of assets of TransCanada in the event of a liquidation, dissolution or winding up of TransCanada.

Credit ratings

Although TransCanada has not issued debt to the public, it has been assigned credit ratings by Moody's Investors Service, Inc. (Moody's) and Standard & Poor's (S&P) and its outstanding preferred shares have also been assigned credit ratings by Moody's, S&P and DBRS Limited (DBRS). Moody's has assigned an issuer rating of Baa1 with a stable outlook and S&P has assigned a long-term corporate credit rating of A – with a stable outlook. TransCanada does not presently intend to issue debt securities to the public in its own name and any future debt financing requirements are expected to continue to be funded primarily through its subsidiary, TCPL. The

2012 Annual information form -- 23

following table sets out the current credit ratings assigned to those outstanding classes of securities of the Company and TCPL which have been rated by DBRS, Moody's and S&P:

	DBRS	Moody's	S&P
Senior unsecured debt
Debentures	A	A3	A-
Medium-term notes	A	A3	A-
Junior subordinated notes	BBB (high)	Baa1	BBB
Preferred shares	Pfd-2 (low)	Baa2	P-2
Commercial paper	R-1 (low)	–	A-2
Trending/rating outlook	Stable	Stable	Stable

Credit ratings are intended to provide investors with an independent measure of credit quality of an issue of securities. Credit ratings are not recommendations to purchase, hold or sell securities and do not address the market price or suitability of a specific security for a particular investor. There is no assurance that any rating will remain in effect for any given period of time or that any rating will not be revised or withdrawn entirely by a rating agency in the future if, in its judgment, circumstances so warrant.

Each of the Company and TCPL paid fees to each of DBRS, Moody's and S&P for the credit ratings rendered their outstanding classes of securities noted above. Other than annual monitoring fees for the Company and TCPL and their rated securities, no additional payments were made to DBRS, Moody's and S&P in respect of any other services provided to us during the past two years.

The information concerning our credit ratings relates to our financing costs, liquidity and operations. The availability of our funding options may be affected by certain factors, including the global capital market environment and outlook as well as our financial performance. Our access to capital markets at competitive rates is dependent on our credit rating and rating outlook, as determined by credit rating agencies such as DBRS, Moody's and S&P, and if our ratings were downgraded TransCanada's financing costs and future debt issuances could be unfavorably impacted. A description of the rating agencies' credit ratings listed in the table above is set out below.

DBRS
DBRS has different rating scales for short- and long-term debt and preferred shares. High or low grades are used to indicate the relative standing within all rating categories other than AAA and D. The absence of either a high or low designation indicates the rating is in the middle of the category. The R-1 (low) rating assigned to TCPL's short-term debt is in the third highest of ten rating categories and indicates good credit quality. The capacity for payment of short-term financial obligations as they fall due is substantial. The overall strength is not as favourable as higher rating categories and may be vulnerable to future events, but any qualifying negative factors that exist are considered manageable. The A rating assigned to TCPL's senior unsecured debt is in the third highest of ten categories for long-term debt. Long-term debt rated A is good credit quality. The capacity for the payment of interest and principal is substantial, but of lesser credit quality than that of AA rated securities. Long term debt rated A may be vulnerable to future events but qualifying negative factors are considered manageable. The BBB (high) rating assigned to junior subordinated notes is in the fourth highest of the ten categories for long-term debt. Long-term debt rated BBB is of adequate credit quality. The capacity for the payment of interest and principal is considered acceptable, but it may be vulnerable to future events. The Pfd-2 (low) rating assigned to TCPL's and TransCanada's preferred shares is in the second highest of six rating categories for preferred shares. Preferred shares rated Pfd-2 are of satisfactory credit quality. Protection of dividends and principal is still substantial; however, earnings, the balance sheet and coverage ratios are not as strong as Pfd-1 rated companies. In general, Pfd-2 ratings correspond with companies whose long-term debt is rated in the A category.

MOODY'S
Moody's has different rating scales for short- and long-term obligations. Numerical modifiers 1, 2 and 3 are applied to each rating classification from Aa through Caa, with 1 being the highest and 3 being the lowest. The A3 rating assigned to TCPL's senior unsecured debt is in the third highest of nine rating categories for long-term obligations. Obligations rated A are considered upper medium grade and are subject to low credit risk. The Baa1 and Baa2 ratings assigned to TCPL's junior subordinated debt and preferred shares, respectively, are in the fourth highest of nine rating categories for long-term obligations, with the junior subordinated debt ranking slightly higher within the Baa rating category with a modifier of 1 as opposed to the modifier of 2 on the preferred shares. Obligations rated Baa are subject to moderate credit risk, are considered medium-grade, and as such, may possess certain speculative characteristics.

24 -- TransCanada Corporation

S&P
S&P has different rating scales for short- and long-term obligations. Ratings from AA through CCC may be modified by the addition of a plus (+) or minus (-) sign to show the relative standing within a particular rating category. The A- rating assigned to TCPL's senior unsecured debt is in the third highest of ten rating categories for long-term obligations. An A rating indicates the obligor's capacity to meet its financial commitment is strong; however, the obligation is slightly more susceptible to the adverse effects of changes in circumstances and economic conditions than obligations in higher rated categories. As guarantor of a U.S. subsidiary's commercial paper program, TCPL has been assigned a commercial paper rating of A-2 which is the second highest of eight rating categories for short-term debt obligations. A short term debt rated A-2 is somewhat more susceptible to adverse effects of changes in economic conditions than higher rated categories; however, the capacity to meet all financial commitments remains satisfactory. The BBB and P-2 ratings assigned to TCPL's junior subordinated notes and TCPL's and TransCanada's preferred shares exhibits adequate protection parameters. However, adverse economic conditions or changing circumstances are more likely to lead to a weakened capacity of the obligor to meet its financial commitment on the obligation.

Market for securities

TransCanada's common shares are listed on the TSX and the New York Stock Exchange (NYSE) under the symbol TRP. TransCanada's Series 1, 3 and 5 preferred shares have been listed for trading on the TSX since September 30, 2009, March 11, 2010 and June 29, 2010, under the symbols TRP.PR.A, TRP.PR.B, and TRP.PR.C, respectively. The following tables set out the reported monthly high, low, and month-end closing trading prices and monthly trading volumes of the common shares of TransCanada on the TSX and the NYSE, and the respective Series 1, 3 and 5 preferred shares on the TSX, for the period indicated:

COMMON SHARES

	TSX (TRP)				NYSE (TRP)
Month	High ($)	Low ($)	Close ($)	Volume Traded	High (US$)	Low (US$)	Close (US$)	Volume Traded
December 2012	$47.44	$45.30	$47.02	22,542,514	$47.78	$45.69	$47.32	8,599,319
November 2012	$45.98	$43.64	$45.98	20,383,391	$46.13	$43.56	$45.99	6,643,142
October 2012	$45.45	$43.16	$44.97	23,049,914	$46.58	$43.54	$45.23	4,749,881
September 2012	$45.61	$44.26	$44.74	23,361,386	$47.02	$44.27	$45.50	4,531,523
August 2012	$46.29	$44.36	$44.40	25,112,761	$46.76	$44.84	$45.07	7,970,340
July 2012	$46.00	$42.73	$45.67	30,066,257	$45.90	$41.68	$45.45	7,591,231
June 2012	$43.30	$41.47	$42.67	27,804,268	$42.56	$39.87	$41.90	8,808,940
May 2012	$43.55	$41.78	$42.33	24,869,200	$44.20	$40.35	$40.92	10,263,574
April 2012	$43.80	$42.10	$43.46	26,627,021	$44.50	$41.93	$43.98	10,157,804
March 2012	$44.60	$42.31	$42.83	30,474,321	$45.07	$42.38	$43.00	14,759,355
February 2012	$43.69	$41.02	$43.57	27,988,166	$44.21	$41.13	$43.98	10,105,156
January 2012	$44.75	$40.34	$41.25	36,915,568	$44.28	$39.74	$41.05	14,839,199

2012 Annual information form -- 25

SERIES 1 PREFERRED SHARES

	TSX (TRP.PR.A)
Month	High ($)	Low ($)	Close ($)	Volume Traded
December 2012	$25.75	$25.25	$25.69	251,155
November 2012	$25.70	$25.21	$25.33	345,144
October 2012	$25.85	$25.41	$25.50	214,250
September 2012	$25.95	$25.46	$25.81	94,025
August 2012	$26.15	$25.64	$25.77	183,141
July 2012	$26.03	$25.50	$25.80	103,746
June 2012	$25.82	$25.26	$25.70	217,717
May 2012	$26.24	$25.40	$25.50	203,126
April 2012	$26.22	$25.80	$26.18	814,719
March 2012	$26.46	$25.60	$25.80	173,582
February 2012	$27.19	$26.15	$26.20	202,767
January 2012	$27.17	$26.15	$26.57	352,329

SERIES 3 PREFERRED SHARES

	TSX (TRP.PR.B)
Month	High ($)	Low ($)	Close ($)	Volume Traded
December 2012	$24.47	$24.14	$24.43	321,065
November 2012	$24.97	$24.15	$24.23	309,882
October 2012	$25.10	$24.82	$24.96	423,217
September 2012	$25.36	$24.79	$24.90	493,093
August 2012	$25.69	$25.20	$25.33	110,019
July 2012	$25.60	$25.05	$25.39	235,273
June 2012	$25.25	$24.96	$25.12	384,867
May 2012	$25.69	$25.05	$25.20	205,547
April 2012	$25.66	$25.30	$25.43	543,553
March 2012	$25.58	$25.00	$25.35	274,498
February 2012	$26.15	$25.35	$25.36	407,748
January 2012	$25.79	$25.25	$25.63	459,012

26 -- TransCanada Corporation

SERIES 5 PREFERRED SHARES

	TSX (TRP.PR.C)
Month	High ($)	Low ($)	Close ($)	Volume Traded
December 2012	$26.07	$25.61	$25.95	156,765
November 2012	$25.80	$25.36	$25.59	172,451
October 2012	$25.64	$25.30	$25.43	217,288
September 2012	$25.97	$25.26	$25.40	105,706
August 2012	$25.98	$25.59	$25.85	212,511
July 2012	$25.93	$25.35	$25.59	207,273
June 2012	$25.80	$25.39	$25.48	136,967
May 2012	$26.29	$25.55	$25.65	235,317
April 2012	$25.94	$25.43	$25.80	286,584
March 2012	$26.10	$25.40	$25.54	143,516
February 2012	$26.60	$25.69	$25.99	118,814
January 2012	$26.35	$25.60	$25.91	276,704

In addition, TransCanada's subsidiary, TCPL, has cumulative redeemable first preferred shares, series U and series Y listed on the TSX under the symbols TCA.PR.X, and TCA.PR.Y, respectively.

Directors and officers

As of February 11, 2013, the directors and officers of TransCanada as a group beneficially owned, or exercised control or direction, directly or indirectly, over an aggregate of 405,905 common shares of TransCanada. This constitutes less than one per cent of TransCanada's common shares. The Company collects this information from our directors and officers but otherwise we have no direct knowledge of individual holdings of TransCanada's securities.

DIRECTORS
The following table sets forth the names of the directors who serve on the Board, as of February 11, 2013 (unless otherwise indicated), together with their jurisdictions of residence, all positions and offices held by them with TransCanada, their principal occupations or employment during the past five years and the year from which each director has continually served as a director of TransCanada and, prior to the arrangement, with TCPL. Positions and offices held with TransCanada are also held by such person at TCPL. Each director holds office until the next annual meeting or until his or her successor is earlier elected or appointed.

Name and place of residence	Principal occupation during the five preceding years	Director since
Kevin E. Benson DeWinton, Alberta Canada	Corporate director, Director, Calgary Airport Authority. President and Chief Executive Officer, Laidlaw International, Inc. (transportation services) from June 2003 to October 2007.	2005
Derek H. Burney(1), O.C. Ottawa, Ontario Canada	Senior strategic advisor at Norton Rose Canada LLP (law firm). Director, Paradigm Capital Inc. Advisory Board. Chair, Canwest Global Communications Corp. (communications) from August 2006 (director since April 2005) to October 2010.	2005
E. Linn Draper Lampasas, Texas U.S.	Corporate director, Director, Alliance Data Systems Corporation (data processing and services) and Alpha Natural Resources, Inc. (mining). Chair, NorthWestern Corporation (conducting business as NorthWestern Energy) (oil and gas).	2005
The Hon. Paule Gauthier, P.C., O.C., O.Q., Q.C. Québec, Québec Canada	Senior Partner, Stein Monast L.L.P. (law firm). Director, Metro Inc., Royal Bank of Canada and the Fondation du Musée national des beaux-arts du Québec. Director, Institut Québecois des Hautes Études Internationales, Laval University from August 2002 to June 2009, RBC Dexia Investors Trust until October 2011 and Care Canada from October 2010 to December 2011.	2002

2012 Annual information form -- 27

Russell K. Girling Calgary, Alberta Canada	President and Chief Executive Officer, TransCanada since July 2010. Chief Operating Officer from July 2009 to June 2010 and President, Pipelines from June 2006 to June 2010. Director, Agrium Inc.	2010
S. Barry Jackson Calgary, Alberta Canada	Corporate director, Chair of the Board, TransCanada since April 2005. Chair, Nexen Inc. (oil and gas) and director, Laricina Energy Ltd. and WestJet Airlines Ltd. Director, Cordero Energy Inc. from April 2005 to September 2008.	2002
Paul L. Joskow New York, New York U.S.	Economist and President of the Alfred P. Sloan Foundation. Professor of Economics, Emeritus, Massachusetts Institute of Technology (MIT). Director, Exelon Corporation (energy), and a trustee of Putnam Mutual Funds.	2004
John A. MacNaughton(2)(3) C.M. Toronto, Ontario Canada	Corporate director. Chair, Business Development Bank of Canada from August 2007 to December 2012 and the Independent Nominating Committee of the Canada Employment Insurance Financing Board from July 2008 to January 2013. Member of the Prime Minister's Advisory Committee on the Public Service from May 2010 to January 2013. Chair, CNSX Markets Inc. (formerly the Canadian Trading and Quotation System Inc.) (stock exchange) from February 2006 to July 2010. Director, Nortel Networks Corporation and Nortel Networks Limited (the principal operating subsidiary of Nortel Networks Corporation) (technology) from June 2005 to September 2010.	2006
Paula Rosput Reynolds Seattle, Washington U.S.	President and Chief Executive Officer of PreferWest, LLC (business advisory group). Director, Anadarko Petroleum Corporation, Delta Air Lines, Inc. and BAE Systems plc. Vice Chair and Chief Restructuring Officer, American International Group Inc. (insurance and financial services) from October 2008 to September 2009. President and Chief Executive Officer, Safeco Corporation (insurance) from January 2006 to February 2008.	2011
Mary Pat Salomone(4)(5) Charlotte, North Carolina, U.S.	Senior Vice-President & Chief Operating Officer of The Babcock & Wilcox Company. Manager of Business Development from 2009 to 2010 and Manager of Strategic Acquisitions from 2008 to 2009, Babcock & Wilcox Nuclear Operations Group, Inc. Director, United States Enrichment Corporation, from December 2011 to October 2012.	2013
W. Thomas Stephens(6) Greenwood Village, Colorado U.S.	Corporate director. Trustee, Putnam Mutual Funds. Chair and Chief Executive Officer, Boise Cascade, LLC (paper, forest products and timberland assets) from November 2004 to November 2008. Director, Boise Inc. from February 2008 to April 2010.	2007(4)
D. Michael G. Stewart Calgary, Alberta Canada	Corporate director. Director, Canadian Energy Services & Technology Corp. (oil and gas) and Pengrowth Energy Corporation (oil & gas). Director, C&C Energia Ltd. from May 2010 to December 2012 and Orleans Energy Ltd. (oil & gas) from October 2008 to December 2010. Director, Pengrowth Corporation (the administrator of Pengrowth Energy Trust) from October 2006 to December 2010. Director, Canadian Energy Services Inc. (the general partner of Canadian Energy Services L.P.) from January 2006 to December 2009.	2006
Richard E. Waugh Toronto, Ontario Canada	Chief Executive Officer and director of The Bank of Nova Scotia (Scotiabank). Director, Catalyst Inc. and Chair, Catalyst Canada Advisory Board. Director and President, International Monetary Conference. Vice-Chair, the Institute of International Finance.	2012

(1)

Canwest Global Communications Corp. (Canwest) voluntarily entered into the Companies' Creditors Arrangement Act (CCAA) and obtained an order from the Ontario Superior Court of Justice (Commercial Division) to start proceedings on October 6, 2009. Although no cease trade orders were issued, Canwest shares were de-listed by the TSX after the filing and started trading on the TSX Venture Exchange. Canwest emerged from CCAA protection, and Postmedia Network acquired its newspaper business on July 13, 2010 while Shaw Communications Inc. acquired its broadcast media business on October 27, 2010. Mr. Burney ceased to be a director of Canwest on October 27, 2010.

(2)

Nortel Networks Limited was the principal operating subsidiary of Nortel Networks Corporation (collectively referred to as Nortel). Mr. MacNaughton became a director of Nortel on June 29, 2005. Nortel was subject to a management cease trade order on April 10, 2006 issued by the Ontario Securities Commission (OSC) and other provincial securities regulators. The cease trade order related to a delay in filing some of Nortel's 2005 financial statements. The order was revoked by the OSC on June 8, 2006, and the other provincial securities regulators shortly after. On January 14, 2009, Nortel and some of its Canadian subsidiaries filed for creditor protection under CCAA.

(3)

Mr. MacNaughton resigned from the Board effective January 9, 2013.

(4)

Ms. Salomone joined the Board effective February 12, 2013.

(5)

Ms. Salomone was a director of Crucible Materials Corp. (Crucible) from May 2008 through May 1, 2009. On May 6, 2009, Crucible and one of its affiliates filed voluntary petitions for relief under Chapter 11 of the United States Bankruptcy Code in the U.S. Bankruptcy Court for the District of Delaware (the Bankruptcy Court). On August 26, 2010, the Bankruptcy Court entered an order confirming Crucible's Second Amended Chapter 11 Plan of Liquidation.

(6)

Mr. Stephens previously served on the Board from 2000 to 2005.

28 -- TransCanada Corporation

BOARD COMMITTEES
TransCanada has four committees of the Board: the Audit committee, the Governance committee, the Health, Safety and Environment committee and the Human Resources committee. The voting members of each of these committees, as of February 11, 2013, are identified below. Mr. MacNaughton was the Chair of the Governance committee and a member of the Audit committee until the date of his resignation effective January 9, 2013. Mr. Burney was appointed as the Chair of the Governance committee effective February 11, 2013.

Director	Audit committee	Governance committee	Health, Safety and Environment committee	Human Resources committee
Kevin E. Benson	Chair	ü
Derek H. Burney	ü	Chair
E. Linn Draper			Chair	ü
Paule Gauthier			ü	ü
S. Barry Jackson		ü		ü
Paul L. Joskow	ü	ü
Paula Rosput Reynolds			ü	ü
W. Thomas Stephens			ü	Chair
D. Michael G. Stewart	ü		ü
Richard E. Waugh		ü

The respective charters of the Audit, Governance, Health, Safety and Environment and Human Resources committees can be found on our website (www.transcanada.com) under Corporate governance – Board committees. Information about the Audit committee can be found in this AIF under the heading Audit committee.

Further information about the Board committees and corporate governance can also be found on TransCanada's website.

OFFICERS
All of the executive officers and corporate officers of TransCanada reside in Calgary, Alberta, Canada, with the exception of Mr. Hobbs who resides in Houston, Texas, U.S. References to positions and offices with TransCanada prior to May 15, 2003 are references to the positions and offices held with TCPL. Current positions and offices held with TransCanada are also held by such person at TCPL. As of the date hereof, the officers of TransCanada, their present positions within TransCanada and their principal occupations during the five preceding years are as follows:

Executive officers

Name	Present position held	Principal occupation during the five preceding years
Russell K. Girling	President and Chief Executive Officer	Prior to July 2010, Chief Operating Officer since July 2009 and President, Pipelines since June 2006.
Wendy L. Hanrahan	Executive Vice-President, Corporate Services	Prior to May 2011, Vice-President, Human Resources since January 2005.
Karl R. Johannson	Executive Vice-President and President, Natural Gas Pipelines	Senior Vice-President, Canadian and Eastern U.S. Pipelines from January 2011 to October 2012. Senior Vice-President, Power Commercial from January 2006 to December 2010.
Gregory A. Lohnes(1)	Executive Vice-President, Operations and Major Projects	Prior to November 2012, Executive Vice-President and President, Natural Gas Pipelines. Prior to July 2010, Executive Vice-President and Chief Financial Officer since June 2006.
Donald R. Marchand	Executive Vice-President and Chief Financial Officer	Prior to July 2010, Vice-President, Finance and Treasurer since September 1999.
Dennis J. McConaghy	Executive Vice-President, Corporate Development	Prior to July 2010, Executive Vice-President, Pipeline Strategy and Development.
Sean McMaster	Executive Vice-President, Stakeholder Relations and General Counsel and Chief Compliance Officer	Prior to February 2012, Executive Vice-President, Corporate and General Counsel and Chief Compliance Officer.
Alexander J. Pourbaix	President, Energy and Oil Pipelines	President, Energy from July 2006 to July 2010 and Executive Vice-President, Corporate Development from July 2009 to July 2010.

(1)

Mr. Lohnes has held the position of Executive Vice-President, Operations and Major Projects since November 2012, upon the retirement of Mr. Donald Wishart who held the position since July 2009.

2012 Annual information form -- 29

Corporate officers

Name	Present position held	Principal occupation during the five preceding years
Sean M. Brett	Vice-President and Treasurer	Prior to July 2010, Vice-President, Commercial Operations of TC PipeLines GP, Inc., and Director, LP Operations of TCPL. Prior to December 2009, Director, Joint Venture Management, Keystone Pipeline Project of TCPL. Prior to December 2008, Vice-President and Treasurer of TC PipeLines GP, Inc.
Ronald L. Cook	Vice-President, Taxation	Vice-President, Taxation since April 2002.
Lee G. Hobbs	President, U.S. Natural Gas Pipelines	Senior Vice-President and General Manager, U.S. Pipelines, Pipelines Division, TCPL, June 2009 to July 2010. Vice-President and General Manager, U.S. Pipelines Central, Pipelines Division, TCPL, March 2007 to June 2009.
Joel E. Hunter	Vice-President, Finance	Director, Corporate Finance, January 2008 to July 2010.
Christine R. Johnston(1)	Vice-President and Corporate Secretary	Vice-President, Finance Law from January 2010 to March 2012. Vice-President, Corporate Development Law from September 2009 to December 2009. Associate General Counsel, Corporate Development and Finance Law from September 2005 to September 2009.
Garry E. Lamb	Vice-President, Risk Management	Vice-President, Risk Management since October 2001.
G. Glenn Menuz	Vice-President and Controller	Vice-President and Controller since June 2006.

(1)

Ms. Johnston has held the position of Vice-President and Corporate Secretary since March 2012, upon the retirement of Mr. Donald DeGrandis who had held the position of Corporate Secretary since June 2006.

CONFLICTS OF INTEREST
Directors and officers of TransCanada and its subsidiaries are required to disclose any existing or potential conflicts in accordance with TransCanada policies governing directors and officers and in accordance with the CBCA. The Board believes that it is important for it to be composed of qualified and knowledgeable directors. As a result, due to the specialized nature of the energy infrastructure business, some of the nominated directors are associated with or sit on the boards of companies that ship natural gas or crude oil through our pipeline systems. Transmission services on most of TransCanada's pipeline systems in Canada and the U.S. are subject to regulation and accordingly we generally cannot deny transportation services to a creditworthy shipper. The Governance committee monitors relationships among directors to ensure that business associations do not affect the Board's performance. If a director declares that they have an interest in a material contract or transaction that is being considered by the Board, the director leaves the meeting so the matter can be discussed and voted on.

Corporate governance

Our Board and management are committed to the highest standards of ethical conduct and corporate governance.

TransCanada is a public company listed on the TSX and the NYSE, and we recognize and respect rules and regulations in both Canada and the U.S.

Our corporate governance practices comply with the Canadian governance guidelines, which include the governance rules of the TSX and Canadian Securities Administrators:

•

National Instrument 52-110, Audit committees

•

National Policy 58-201, Corporate Governance Guidelines, and

•

National Instrument 58-101, Disclosure of Corporate Governance Practices.

We also comply with the governance listing standards of the NYSE and the governance rules of the SEC that apply to foreign private issuers.

Our governance practices comply with the NYSE standards for U.S. companies in all significant respects, except as summarized on our website (www.transcanada.com). As a non-U.S. company, we are not required to comply with most of the governance listing standards of the NYSE. As a foreign private issuer, however, we must disclose how our governance practices differ from those followed by U.S. companies that are subject to the NYSE standards.

We benchmark our policies and procedures against major North American companies to assess our standards and we adopt best practices as appropriate. Some of our best practices are derived from the NYSE rules and comply with applicable rules adopted by the SEC to meet the requirements of the Sarbanes-Oxley Act of 2002 and the Dodd-Frank Wall Street Reform and Consumer Protection Act.

30 -- TransCanada Corporation

Further information about TransCanada's corporate governance can be found on our website (www.transcanada.com) under the heading Corporate governance and in the Governance section of TransCanada's Management Information Circular dated February 11, 2013.

Audit committee

The Audit committee is responsible for assisting the Board in overseeing the integrity of our financial statements and our compliance with legal and regulatory requirements. It is also responsible for overseeing and monitoring the internal accounting and reporting process and the process, performance and independence of our internal and external auditors. The charter of the Audit committee can be found in Schedule B of this AIF and on our website (www.transcanada.com) under the Corporate governance – Board committees page.

RELEVANT EDUCATION AND EXPERIENCE OF MEMBERS
The members of the Audit committee as of February 11, 2013 are Kevin E. Benson (Chair), Derek H. Burney, Paul L. Joskow, and D. Michael G. Stewart. Mr. Draper was a member of the Audit committee from May 1, 2009 to April 26, 2012 and became a member of the Human Resources committee effective April 27, 2012. Mr. MacNaughton was a member of the Audit committee from May 1, 2009 to January 9, 2013, the effective date of his retirement as a director of TransCanada. Richard E. Waugh attends the Audit committee meetings as an observer and does not vote on any matters.

The Board believes that the composition of the Audit committee reflects a high level of financial literacy and expertise. Each member of the Audit committee has been determined by the Board to be independent and financially literate within the meaning of the definitions under Canadian and U.S. securities laws and the NYSE rules. In addition, the Board has determined that Mr. Benson is an Audit Committee Financial Expert as that term is defined under U.S. securities laws. The Board has made these determinations based on the education and breadth and depth of experience of each member of the Audit committee. The following is a description of the education and experience, apart from their respective roles as directors of TransCanada, of each member of the Audit committee that is relevant to the performance of his responsibilities as a member of the Audit committee.

Kevin E. Benson
Mr. Benson is a Chartered Accountant (South Africa) and was a member of the South African Society of Chartered Accountants. Mr. Benson was the President and Chief Executive Officer of Laidlaw International, Inc. until October 2007. In prior years, he has held several executive positions including one as President and Chief Executive Officer of The Insurance Corporation of British Columbia and has served on other public company boards and on the audit committees of certain of those boards.

Derek H. Burney
Mr. Burney earned a Bachelor of Arts (Honours) and Master of Arts from Queen's University. He is currently a senior strategic advisor at Norton Rose Canada LLP. Mr. Burney previously served as President and Chief Executive Officer of CAE Inc. and as Chair and Chief Executive Officer of Bell Canada International Inc. Mr. Burney was the lead director at Shell Canada Limited until May 2007 and was the Chair of Canwest Global Communications Corp. until October 2010. He has served on one other organization's audit committee, and has participated in Financial Reporting Standards Training offered by KPMG.

E. Linn Draper
Dr. Draper holds a Bachelor of Science in Chemical Engineering from Rice University and a Ph.D. in Nuclear Science and Engineering from Cornell University. Dr. Draper was Chair, President and Chief Executive Officer of American Electric Power Co., Inc. until 2004. He previously served as Chair, President and Chief Executive Officer of Gulf States Utilities Company. Dr. Draper has served and continues to serve on several other public company boards.

Paul L. Joskow
Mr. Joskow earned a Bachelor of Arts with Distinction in Economics from Cornell University, a Masters of Philosophy in Economics from Yale University, and a Ph.D. in Economics from Yale University. He is currently the President of the Alfred P. Sloan Foundation and a Professor of Economics, Emeritus, at MIT. He has served on the boards of several public companies and other organizations and on the audit committees of most of those boards, including serving as a trustee of Putnam Mutual Funds since October 1997, where he served as the Chair of the audit committee from November 2002 until December 2005.

John A. MacNaughton
Mr. MacNaughton earned a Bachelor of Arts in Economics from the University of Western Ontario. During his term as a member of TransCanada's Audit committee, Mr. MacNaughton was the Chair of the Business Development Bank of Canada. He was Chair of

2012 Annual information form -- 31

CNSX Markets Inc. (formerly Canadian Trading and Quotation System Inc.) until July 2010. In prior years, Mr. MacNaughton held several executive positions including founding President and Chief Executive Officer of the Canadian Pension Plan Investment Board and President of Nesbitt Burns Inc. He has served on the audit committee of other public companies.

D. Michael G. Stewart
Mr. Stewart earned a Bachelor of Science (Honours) in Geological Science from Queen's University. Mr. Stewart has served and continues to serve on the boards of several public companies and other organizations and on the audit committees of certain of those boards. Mr. Stewart held a number of senior executive positions with Westcoast Energy Inc. including Executive Vice-President, Business Development. He has been active in the Canadian energy industry for over 39 years.

PRE-APPROVAL POLICIES AND PROCEDURES
TransCanada's Audit committee has adopted a pre-approval policy with respect to permitted non-audit services. Under the policy, the Audit committee has granted pre-approval for specified non-audit services. For engagements of up to $250,000, approval of the Audit committee Chair is required, and the Audit committee is to be informed of the engagement at the next scheduled Audit committee meeting. For all engagements of $250,000 or more, pre-approval of the Audit committee is required. In all cases, regardless of the dollar amount involved, where there is a potential for conflict of interest involving the external auditor to arise on an engagement, the Audit committee must pre-approve the assignment.

To date, TransCanada has not approved any non-audit services on the basis of the de-minimus exemptions. All non-audit services have been pre-approved by the Audit committee in accordance with the pre-approval policy described above.

EXTERNAL AUDITOR SERVICE FEES
The table below shows the services KPMG provided during the last two fiscal years and the fees we paid them:

($ millions)	2012	2011
Audit fees •  audit of the annual consolidated financial statements •  services related to statutory and regulatory filings or engagements •  review of interim consolidated financial statements and information contained in various prospectuses and other offering documents	$5.7	$6.9
Audit-related fees •  services related to the audit of the financial statements of certain TransCanada post-retirement and post-employment plans	0.1	0.2
Tax fees •  Canadian and international tax planning and tax compliance matters, including the review of income tax returns and other tax filings	0.5	0.4
All other fees •  review of information system design procedures •  services related to vendor analytics and environmental compliance credits	0.6	0.1
Total fees	$6.9	$7.6

Legal proceedings and regulatory actions

TransCanada and its subsidiaries are subject to various legal proceedings and regulatory actions arising in the normal course of business. While the final outcomes of such legal proceedings and regulatory actions cannot be predicted with certainty and there can be no assurance that such matters will be resolved in TransCanada's favour, it is the opinion of TransCanada's management that the resolution of such proceedings and regulatory actions will not have a material impact on TransCanada's consolidated financial position, results of operations or liquidity. We are not aware of any potential legal proceeding or action that would have a material impact on our consolidated financial position, results of operations or liquidity.

The most significant this year were the TransAlta Sundance A claims, which were resolved through a binding arbitration process that resulted in a decision in July 2012. For further information regarding the Sundance A claims, refer to the General developments of the business – Developments of the Energy business section of this AIF above and the Energy – Significant events section of the MD&A, which section is incorporated by reference herein.

32 -- TransCanada Corporation

Transfer agent and registrar

TransCanada's transfer agent and registrar is Computershare Trust Company of Canada with its Canadian transfer facilities in the cities of Vancouver, Calgary, Toronto, Halifax and Montréal.

Interest of experts

TransCanada's auditors, KPMG LLP, have confirmed that they are independent within the meaning of the Rules of Professional Conduct of the Institute of Chartered Accountants of Alberta.

Additional information

1.

Additional information in relation to TransCanada may be found under TransCanada's profile on SEDAR (www.sedar.com).

2.

Additional information including directors' and officers' remuneration and indebtedness, principal holders of TransCanada's securities and securities authorized for issuance under equity compensation plans (all where applicable), is contained in TransCanada's management information circular for its most recent annual meeting of shareholders that involved the election of directors and can be obtained upon request from the Corporate Secretary of TransCanada.

3.

Additional financial information is provided in TransCanada's audited consolidated financial statements and MD&A for its most recently completed financial year.

2012 Annual information form -- 33

Glossary

Units of measure

Bbl/d	Barrel(s) per day
Bcf	Billion cubic feet
Bcf/d	Billion cubic feet per day
GWh	Gigawatt hours
MMcf/d	Million cubic feet per day
MW	Megawatt(s)
MWh	Megawatt hours

General terms and terms related to our operations

bitumen	A thick, heavy oil that must be diluted to flow (also see: diluent). One of the components of the oil sands, along with sand, water and clay.
Canadian Restructuring Proposal	Canadian Mainline business and services restructuring proposal and 2012 and 2013 Mainline final tolls application
cogeneration facilities	Facilities that produce both electricity and useful heat at the same time.
diluent	A thinning agent made up of organic compounds. Used to dilute bitumen so it can be transported through pipelines.
FIT	Feed-in tariff
force majeure	Unforeseeable circumstances that prevent a party to a contract from fulfilling it.
fracking	Hydraulic fracturing. A method of extracting natural gas from shale rock.
GHG	Greenhouse gas
HSE	Health, safety and environment
LNG	Liquefied natural gas
MET	Mitigation exemption tests
OM&A	Operating, maintenance and administration
PJM Interconnection area (PJM)	A regional transmission organization that coordinates the movement of wholesale electricity in all or parts of 13 states and the District of Columbia
PPA	Power purchase arrangement
WCSB	Western Canada Sedimentary Basin

Accounting terms

AFUDC	Allowance for funds used during construction
AOCI	Accumulated other comprehensive (loss)/income
ARO	Asset retirement obligations
ASU	Accounting Standards Updatepension
DRP	Dividend reinvestment plan
EBIT	Earnings before interest and taxes
EBITDA	Earnings before interest, taxes, depreciation and amortization
FASB	Financial Accounting Standards Board (U.S.)
OCI	Other comprehensive (loss)/income
RRA	Rate-regulated accounting
ROE	Rate of return on common equity
U.S. GAAP	U.S. generally accepted accounting principles

Government and regulatory bodies

CFE	Comisión Federal de Electricidad (Mexico)
CRE	Comisión Reguladora de Energia, or Energy Regulatory Commission (Mexico)
DOS	Department of State (U.S.)
FERC	Federal Energy Regulatory Commission (U.S.)
IEA	International Energy Agency
ISO	Independent System Operator
LMCI	Land Matters Consultation Initiative (Canada)
NDEQ	Nebraska Department of Environmental Quality (U.S.)
NEB	National Energy Board (Canada)
OPA	Ontario Power Authority (Canada)
RGGI	Regional Greenhouse Gas Initiative (northeastern U.S.)
SEC	U.S. Securities and Exchange Commission

34 -- TransCanada Corporation

Schedule A
Metric conversion table

The conversion factors set out below are approximate factors. To convert from Metric to Imperial multiply by the factor indicated. To convert from Imperial to Metric divide by the factor indicated.

Metric	Imperial	Factor
Kilometres (km)	Miles	0.62
Millimetres	Inches	0.04
Gigajoules	Million British thermal units	0.95
Cubic metres*	Cubic feet	35.3
Kilopascals	Pounds per square inch	0.15
Degrees Celsius	Degrees Fahrenheit	to convert to Fahrenheit multiply by 1.8, then add 32 degrees; to convert to Celsius subtract 32 degrees, then divide by 1.8

*

The conversion is based on natural gas at a base pressure of 101.325 kilopascals and at a base temperature of 15 degrees Celsius.

2012 Annual information form -- 35

Schedule B
Charter of the Audit Committee

1. PURPOSE
The Audit Committee shall assist the Board of Directors (the "Board") in overseeing and monitoring, among other things, the:

•

Company's financial accounting and reporting process;

•

integrity of the financial statements

•

Company's internal control over financial reporting;

•

external financial audit process;

•

compliance by the Company with legal and regulatory requirements; and

•

independence and performance of the Company's internal and external auditors.

To fulfill its purpose, the Audit Committee has been delegated certain authorities by the Board of Directors that it may exercise on behalf of the Board.

2. ROLES AND RESPONSIBILITIES

I. Appointment of the Company's External Auditors
Subject to confirmation by the external auditors of their compliance with Canadian and U.S. regulatory registration requirements, the Audit Committee shall recommend to the Board the appointment of the external auditors, such appointment to be confirmed by the Company's shareholders at each annual meeting. The Audit Committee shall also recommend to the Board the compensation to be paid to the external auditors for audit services and shall pre-approve the retention of the external auditors for any permitted non-audit service and the fees for such service. The Audit Committee shall also be directly responsible for the oversight of the work of the external auditor (including resolution of disagreements between management and the external auditor regarding financial reporting) for the purpose of preparing or issuing an audit report or related work. The external auditor shall report directly to the Audit Committee.

The Audit Committee shall also receive periodic reports from the external auditors regarding the auditors' independence, discuss such reports with the auditors, consider whether the provision of non-audit services is compatible with maintaining the auditors' independence and the Audit Committee shall take appropriate action to satisfy itself of the independence of the external auditors.

II. Oversight in Respect of Financial Disclosure
The Audit Committee, to the extent it deems it necessary or appropriate, shall:

(a)

review, discuss with management and the external auditors and recommend to the Board for approval, the Company's audited annual consolidated financial statements, annual information form, management's discussion and analysis, all financial information in prospectuses and other offering memoranda, financial statements required by regulatory authorities, all prospectuses and all documents which may be incorporated by reference into a prospectus, including without limitation, the annual proxy circular, but excluding any pricing supplements issued under a medium term note prospectus supplement of the Company;

(b)

review, discuss with management and the external auditors and recommend to the Board for approval the release to the public of the Company's interim reports, including the consolidated financial statements, management's discussion and analysis and press releases on quarterly financial results;

(c)

review and discuss with management and external auditors the use of non-GAAP information and the applicable reconciliation;

(d)

review and discuss with management and external auditors financial information and earnings guidance provided to analysts and rating agencies; provided, however, that such discussion may be done generally (consisting of discussing the types of information to be disclosed and the types of presentations to be made). The Audit Committee need not discuss in advance each instance in which the Company may provide earnings guidance or presentations to rating agencies;

(e)

review with management and the external auditors major issues regarding accounting and auditing principles and practices, including any significant changes in the Company's selection or application of accounting principles, as well as major issues as to the adequacy of the Company's internal controls and any special audit steps adopted in light of material control deficiencies that could significantly affect the Company's financial statements;

36 -- TransCanada Corporation

(f)

review and discuss quarterly reports from the external auditors on:

(i)

all critical accounting policies and practices to be used;

(ii)

all alternative treatments of financial information within generally accepted accounting principles that have been discussed with management, ramifications of the use of such alternative disclosures and treatments, and the treatment preferred by the external auditor;

(iii)

other material written communications between the external auditor and management, such as any management letter or schedule of unadjusted differences;

(g)

review with management and the external auditors the effect of regulatory and accounting initiatives as well as off-balance sheet structures on the Company's financial statements;

(h)

review with management, the external auditors and, if necessary, legal counsel, any litigation, claim or contingency, including tax assessments, that could have a material effect upon the financial position of the Company, and the manner in which these matters have been disclosed in the financial statements;

(i)

review disclosures made to the Audit Committee by the Company's CEO and CFO during their certification process for the periodic reports filed with securities regulators about any significant deficiencies in the design or operation of internal controls or material weaknesses therein and any fraud involving management or other employees who have a significant role in the Company's internal controls;

(j)

discuss with management the Company's material financial risk exposures and the steps management has taken to monitor and control such exposures, including the Company's risk assessment and risk management policies;

III. Oversight in Respect of Legal and Regulatory Matters

(a)

review with the Company's General Counsel legal matters that may have a material impact on the financial statements, the Company's compliance policies and any material reports or inquiries received from regulators or governmental agencies.

IV. Oversight in Respect of Internal Audit

(a)

review the audit plans of the internal auditors of the Company including the degree of coordination between such plans and those of the external auditors and the extent to which the planned audit scope can be relied upon to detect weaknesses in internal control, fraud or other illegal acts;

(b)

review the significant findings prepared by the internal audit department and recommendations issued by it or by any external party relating to internal audit issues, together with management's response thereto;

(c)

review compliance with the Company's policies and avoidance of conflicts of interest;

(d)

review the adequacy of the resources of the internal auditor to ensure the objectivity and independence of the internal audit function, including reports from the internal audit department on its audit process with subsidiaries and affiliates;

(e)

ensure the internal auditor has access to the Chair of the Audit Committee and of the Board and to the Chief Executive Officer and meet separately with the internal auditor to review with him or her any problems or difficulties he or she may have encountered and specifically:

(i)

any difficulties which were encountered in the course of the audit work, including restrictions on the scope of activities or access to required information, and any disagreements with management;

(ii)

any changes required in the planned scope of the internal audit; and

(iii)

the internal audit department responsibilities, budget and staffing;

and to report to the Board on such meetings;

V. Insight in Respect of the External Auditors

(a)

review the annual post-audit or management letter from the external auditors and management's response and follow-up in respect of any identified weakness, inquire regularly of management and the external auditors of any significant issues between them and how they have been resolved, and intervene in the resolution if required;

(b)

review the quarterly unaudited financial statements with the external auditors and receive and review the review engagement reports of external auditors on unaudited financial statements of the Company;

(c)

receive and review annually the external auditors' formal written statement of independence delineating all relationships between itself and the Company;

2012 Annual information form -- 37

(d)

meet separately with the external auditors to review with them any problems or difficulties the external auditors may have encountered and specifically:

(i)

any difficulties which were encountered in the course of the audit work, including any restrictions on the scope of activities or access to required information, and any disagreements with management; and

(ii)

any changes required in the planned scope of the audit;

and to report to the Board on such meetings;

(e)

review with the external auditors the adequacy and appropriateness of the accounting policies used in preparation of the financial statements;

(f)

meet with the external auditors prior to the audit to review the planning and staffing of the audit;

(g)

receive and review annually the external auditors' written report on their own internal quality control procedures; any material issues raised by the most recent internal quality control review, or peer review, of the external auditors, or by any inquiry or investigation by governmental or professional authorities, within the preceding five years, and any steps taken to deal with such issues;

(h)

review and evaluate the external auditors, including the lead partner of the external auditor team;

(i)

ensure the rotation of the lead (or coordinating) audit partner having primary responsibility for the audit and the audit partner responsible for reviewing the audit as required by law, but at least every five years;

VI. Oversight in Respect of Audit and Non-Audit Services

(a)

pre-approve all audit services (which may entail providing comfort letters in connection with securities underwritings) and all permitted non-audit services, other than non-audit services where:

(i)

the aggregate amount of all such non-audit services provided to the Company constitutes not more than 5% of the total fees paid by the Company and its subsidiaries to the external auditor during the fiscal year in which the non-audit services are provided;

(ii)

such services were not recognized by the Company at the time of the engagement to be non-audit services; and

(iii)

such services are promptly brought to the attention of the Audit Committee and approved prior to the completion of the audit by the Audit Committee or by one or more members of the Audit Committee to whom authority to grant such approvals has been delegated by the Audit Committee;

(b)

approval by the Audit Committee of a non-audit service to be performed by the external auditor shall be disclosed as required under securities laws and regulations;

(c)

the Audit Committee may delegate to one or more designated members of the Audit Committee the authority to grant pre-approvals required by this subsection. The decisions of any member to whom authority is delegated to pre-approve an activity shall be presented to the Audit Committee at its first scheduled meeting following such pre-approval;

(d)

if the Audit Committee approves an audit service within the scope of the engagement of the external auditor, such audit service shall be deemed to have been pre-approved for purposes of this subsection;

VII. Oversight in Respect of Certain Policies

(a)

review and recommend to the Board for approval the implementation and amendments to policies and program initiatives deemed advisable by management or the Audit Committee with respect to the Company's codes of business ethics and Risk Management and Financial Reporting policies;

(b)

obtain reports from management, the Company's senior internal auditing executive and the external auditors and report to the Board on the status and adequacy of the Company's efforts to ensure its businesses are conducted and its facilities are operated in an ethical, legally compliant and socially responsible manner, in accordance with the Company's codes of business conduct and ethics;

(c)

establish a non-traceable, confidential and anonymous system by which callers may ask for advice or report any ethical or financial concern, ensure that procedures for the receipt, retention and treatment of complaints in respect of accounting, internal controls and auditing matters are in place, and receive reports on such matters as necessary;

(d)

annually review and assess the adequacy of the Company's public disclosure policy;

(e)

review and approve the Company's hiring policies for partners, employees and former partners and employees of the present and former external auditors (recognizing the Sarbanes-Oxley Act of 2002 does not permit the CEO, controller, CFO or chief accounting officer to have participated in the Company's audit as an employee of the external auditors during the preceding one-year period) and monitor the Company's adherence to the policy;

38 -- TransCanada Corporation

VIII. Oversight in Respect of Financial Aspects of the Company's Canadian Pension Plans (the "Company's pension plans"), specifically:

(a)

provide advice to the Human Resources Committee on any proposed changes in the Company's pension plans in respect of any significant effect such changes may have on pension financial matters;

(b)

review and consider financial and investment reports and the funded status relating to the Company's pension plans and recommend to the Board on pension contributions;

(c)

receive, review and report to the Board on the actuarial valuation and funding requirements for the Company's pension plans;

(d)

review and approve annually the Statement of Investment Policies and Procedures ("SIP&P");

(e)

approve the appointment or termination of auditors and investment managers;

IX. U.S. Stock Plans
To review and approve the engagement and related fees of the auditor for any plan of a U.S. subsidiary that offers Company stock to employees as an investment option under the plan.

X. Oversight in Respect of Internal Administration

(a)

review annually the reports of the Company's representatives on certain audit committees of subsidiaries and affiliates of the Company and any significant issues and auditor recommendations concerning such subsidiaries and affiliates;

(b)

oversee the succession planning for the senior management in finance, treasury, tax, risk, internal audit and the controllers' group.

XI. Oversight Function
While the Audit Committee has the responsibilities and powers set forth in this Charter, it is not the duty of the Audit Committee to plan or conduct audits or to determine that the Company's financial statements and disclosures are complete and accurate or are in accordance with generally accepted accounting principles and applicable rules and regulations. These are the responsibilities of management and the external auditors. The Audit Committee, its Chair and any of its members who have accounting or related financial management experience or expertise, are members of the Board, appointed to the Audit Committee to provide broad oversight of the financial disclosure, financial risk and control related activities of the Company, and are specifically not accountable nor responsible for the day to day operation of such activities. Although designation of a member or members as an "audit committee financial expert" is based on that individual's education and experience, which that individual will bring to bear in carrying out his or her duties on the Audit Committee, designation as an "audit committee financial expert" does not impose on such person any duties, obligations or liability that are greater than the duties, obligations and liability imposed on such person as a member of the Audit Committee and Board in the absence of such designation. Rather, the role of any audit committee financial expert, like the role of all Audit Committee members, is to oversee the process and not to certify or guarantee the internal or external audit of the Company's financial information or public disclosure.

3. COMPOSITION OF AUDIT COMMITTEE
The Audit Committee shall consist of three or more Directors, a majority of whom are resident Canadians (as defined in the Canada Business Corporations Act), and all of whom are unrelated and/or independent for the purposes of applicable Canadian and United States securities law and applicable rules of any stock exchange on which the Company's securities are listed. Each member of the Audit Committee shall be financially literate and at least one member shall have accounting or related financial management expertise (as those terms are defined from time to time under the requirements or guidelines for audit committee service under securities laws and the applicable rules of any stock exchange on which the Company's securities are listed for trading or, if it is not so defined as that term is interpreted by the Board in its business judgment).

4. APPOINTMENT OF AUDIT COMMITTEE MEMBERS
The members of the Audit Committee shall be appointed by the Board from time to time, on the recommendation of the Governance Committee and shall hold office until the next annual meeting of shareholders or until their successors are earlier appointed or until they cease to be Directors of the Company.

2012 Annual information form -- 39

5. VACANCIES
Where a vacancy occurs at any time in the membership of the Audit Committee, it may be filled by the Board on the recommendation of the Governance Committee.

6. AUDIT COMMITTEE CHAIR
The Board shall appoint a Chair of the Audit Committee who shall:

(a)

review and approve the agenda for each meeting of the Audit Committee and as appropriate, consult with members of management;

(b)

preside over meetings of the Audit Committee;

(c)

make suggestions and provide feedback from the Audit Committee to management regarding information that is or should be provided to the Audit Committee;

(d)

report to the Board on the activities of the Audit Committee relative to its recommendations, resolutions, actions and concerns; and

(e)

meet as necessary with the internal and external auditors.

7. ABSENCE OF AUDIT COMMITTEE CHAIR
If the Chair of the Audit Committee is not present at any meeting of the Audit Committee, one of the other members of the Audit Committee present at the meeting shall be chosen by the Audit Committee to preside at the meeting.

8. SECRETARY OF AUDIT COMMITTEE
The Corporate Secretary shall act as Secretary to the Audit Committee.

9. MEETINGS
The Chair, or any two members of the Audit Committee, or the internal auditor, or the external auditors, may call a meeting of the Audit Committee. The Audit Committee shall meet at least quarterly. The Audit Committee shall meet periodically with management, the internal auditors and the external auditors in separate executive sessions.

10. QUORUM
A majority of the members of the Audit Committee, present in person or by telephone or other telecommunication device that permit all persons participating in the meeting to speak to each other, shall constitute a quorum.

11. NOTICE OF MEETINGS
Notice of the time and place of every meeting shall be given in writing, facsimile communication or by other electronic means to each member of the Audit Committee at least 24 hours prior to the time fixed for such meeting; provided, however, that a member may in any manner waive a notice of a meeting. Attendance of a member at a meeting is a waiver of notice of the meeting, except where a member attends a meeting for the express purpose of objecting to the transaction of any business on the grounds that the meeting is not lawfully called.

12. ATTENDANCE OF COMPANY OFFICERS AND EMPLOYEES AT MEETING
At the invitation of the Chair of the Audit Committee, one or more officers or employees of the Company may attend any meeting of the Audit Committee.

13. PROCEDURE, RECORDS AND REPORTING
The Audit Committee shall fix its own procedure at meetings, keep records of its proceedings and report to the Board when the Audit Committee may deem appropriate but not later than the next meeting of the Board.

14. REVIEW OF CHARTER AND EVALUATION OF AUDIT COMMITTEE
The Audit Committee shall review its Charter annually or otherwise, as it deems appropriate and, if necessary, propose changes to the Governance Committee and the Board. The Audit Committee shall annually review the Audit Committee's own performance.

40 -- TransCanada Corporation

15. OUTSIDE EXPERTS AND ADVISORS
The Audit Committee is authorized, when deemed necessary or desirable, to retain and set and pay the compensation for independent counsel, outside experts and other advisors, at the Company's expense, to advise the Audit Committee or its members independently on any matter.

16. RELIANCE
Absent actual knowledge to the contrary (which shall be promptly reported to the Board), each member of the Audit Committee shall be entitled to rely on (i) the integrity of those persons or organizations within and outside the Company from which it receives information, (ii) the accuracy of the financial and other information provided to the Audit Committee by such persons or organizations and (iii) representations made by management and the external auditors, as to any information technology, internal audit and other non-audit services provided by the external auditors to the Company and its subsidiaries.

2012 Annual information form -- 41

DEVELOPING NORTH AMERICA’S ENERGY FUTURE 20 12 2012 Annual Report TransCanada Corporation

2012 Financial Highlights Net Income Attributable to Common Shares | $1.30 billion or $1.84 per share Comparable Earnings (1) | $1.33 billion or $1.89 per share Comparable Earnings before Interest, Taxes, Depreciation and Amortization (1) | $4.2 billion Funds Generated from Operations (1) | $3.3 billion Capital Expenditures, Equity Investments and Acquisitions | $3.5 billion Common Share Dividends Declared | $1.76 per share (1) Non-GAAP measure that does not have any standardized meaning prescribed by generally accepted accounting principles (GAAP). For more information see Non-GAAP measures in the Management's Discussion and Analysis of the 2012 Annual Report. Comparable Earnings(1) (millions of dollars) Net Income Attributable to Common Shares (millions of dollars) Comparable EBITDA(1) (millions of dollars) Funds Generated from Operations(1) (millions of dollars) Capital Expenditures, Equity Investments and Acquisitions (millions of dollars) Comparable Earnings per Share(1) (dollars) Net Income per Share– Basic (dollars) Dividends Declared per Share (dollars) Common Shares Outstanding – Average (millions of shares) Market Price – Close Toronto Stock Exchange (dollars) 2012201120102012201120102012201120102012201120102012201120102012201120102012201120102012201120102012201120102012201120101,2991,261,2331,3301,5591,3574,2454,5443,6863,2843,4513,1613,4613,1464,9731.842.171.771.892.221.961.761.681.6070570269147.0244.5337.99 04008001,2001,6002,00004008001,2001,6002,00001,0002,0003,0004,0005,00001,0002,0003,0004,0005,00001,6003,2004,8006,4008,000012301 23012302004006008001,00001020304050 On the cover: Lights illuminate Nathan Phillips Square in Toronto, Ontario, Canada. TransCanada builds and operates safe and reliable facilities to deliver the natural gas, electricity and oil that millions of people count on every day to go about their daily lives. TransCanada is a 50 per cent owner of the Portlands Energy Centre, capable of supplying 25 per cent of Toronto’s electricity needs.

27292824223430353133403944435a38475045464241324937364851252623EnergyNatural Gas Power GenerationCoal Power Purchase ArrangementsNuclear Power GenerationWind Power GenerationSolar Power GenerationHydro Power GenerationUnregulated Natural Gas StorageIn DevelopmentExistingNatural Gas PipelinesExistingIn Development Under ConstructionRegulated Natural Gas StorageOil PipelinesExistingIn Development Under ConstructionCrude Oil TerminalCrude Oil Receipt Facility29272021192021311817172151614491061213555183TC - 01 - 13N500 km200 mi

Natural Gas Pipelines Oil Pipelines Energy Canadian Pipelines Canadian - Western Power Canadian / U.S. Pipelines 1 Alberta System 2 Canadian Mainline 3 Foothills 4 Trans Québec & Maritimes (TQM) 30 Bear Creek 31 Cancarb 32 Carseland 33 Coolidge1 34 Mackay River 35 Redwater 36 Sheerness PPA 37 Sundance A PPA37 Sundance B PPA23 Cushing Marketlink Receipt Facility24 Gulf Coast Project 25 Keystone Hardisty Terminal22 Keystone Pipeline SystemUnder ConstructionU.S. Pipelines5 ANR Pipeline5a ANR Regulated Natural Gas Storage 6 Bison7 Gas Transmission Northwest (GTN) 8 Great Lakes9 Iroquois10 North Baja11 Northern Border12 Portland13 TuscaroraCanadian - Eastern Power38 Bécancour39 Cartier Wind40 Grandview41 Halton Hills42 Portlands EnergyIn Development26 Bakken Marketlink Receipt Facility 27 Grand Rapids Pipeline28 Keystone XL Pipeline29 Northern Courier PipelineUnder Construction16 Mazatlan Pipeline17 Tamazunchale Pipeline Extension 18 Topolobampo PipelineMexican Pipelines14 Guadalajara15 TamazunchaleIn Development19 Alaska Pipeline Project20 Coastal GasLink21 Prince Rupert Gas Transmission ProjectIn Development50 Napanee 51 Ontario SolarU.S. Power 44 Kibby Wind45 Ocean State Power46 Ravenswood47 TC HydroUnregulated Natural Gas Storage 48 CrossAlta49 EdsonBruce Power43 Bruce A43 Bruce B1 Located in Arizona, results reported in Canadian - Western Power SolarWindHydroCoalNatural Gas/OilNuclearNatural GasTransCanada produces close to 11,800 megawatts (MW) of electricity – enough to power nearly 12 million homes. TransCanada’s Power Assets by Fuel Source 11,800MW21% 14% 5% 4% 1% 21% 34%

DEVELOPING NORTH AMERICA’S ENERGY FUTURE Enormous change is underway in North America’s energy landscape. Advanced technology is unlocking significant oil and natural gas reserves once thought to be inaccessible. Some communities are realizing the benefits of energy development while others are grappling with the challenges that may occur. Demand for energy resources is booming from overseas markets as North America moves toward greater energy security and independence. This shift presents considerable investment opportunity for a company like TransCanada. The International Energy Agency predicts North America will require $6 trillion in new energy infrastructure by 2035 as aging facilities need to be replaced and energy products need to be transported to new and existing markets. With over 60 years’ experience delivering energy safely and reliably across the continent every day, we are leading this transformation and have embarked on a decade of unprecedented growth. Since 2010, we have placed $13 billion of new projects into service, including our Keystone oil pipeline that transports more than 500,000 barrels per day (bbl/d) of Canadian crude oil to markets in the United States, the refurbishment of two reactors at Bruce Power, one of the world’s largest nuclear power facilities, wind power developments in Canada and the United States, natural gas-fired power facilities on both sides of the border and further growth in our North American natural gas pipeline infrastructure. This past year saw us make significant progress in capturing new investment opportunities that included $16 billion in new projects. This brings our total of secured capital projects to $25 billion, $12 billion of which are in the advanced stages of development and expected on-line by 2015. This $25 billion capital program includes the significant expansion of our Keystone System, additional oil pipelines to service growing production in Alberta’s oil sands, two potential pipelines across northern British Columbia to connect the emerging liquefied natural gas export market, major expansions to Mexico’s natural gas pipeline system, and solar power facilities in Ontario along with a large, clean-burning, natural gas-fired power plant. 2012 Annual Report TransCanada Corporation

2012 Annual Report TransCanada Corporation Delivering these capital projects on time and on budget will generate significant value for our shareholders. Getting there will require discipline and commitment as we build upon our strong foundation of existing assets, talented people and financial capacity. Unparalleled asset base We are focused on maximizing the value of our existing energy infrastructure assets. TransCanada owns or has interests in $48 billion of long-life assets – primarily pipelines and power generation facilities – in Canada, the United States and Mexico. We operate one of the largest natural gas transmission networks on the continent, a 68,500-kilometre (km) (42,500-mile) system that taps into virtually every major supply basin and transports approximately 20 per cent of North America’s daily natural gas needs. We are also one of the largest providers of natural gas storage and related services, with more than 400 billion cubic feet (Bcf) of capacity. Through our energy business, we own or have interests in 21 facilities that have the capacity to generate 11,800 megawatts (MW) of electricity, enough to power more than 12 million homes. Our Keystone Pipeline transports almost one-quarter of Canada’s crude oil exports to the United States, and has moved more than 350 million barrels safely and efficiently since it began operating in 2010. The best talent Our employees are the heart of our competitive advantage. We have approximately 4,900 dedicated employees across North America who are an important part of the communities where we operate in seven Canadian provinces, 31 U.S. and five Mexican states. Our path forward lies in these committed and motivated people living our company’s values of integrity, collaboration, responsibility and innovation. Our employees and contractors enable us to achieve our best-in-class records for injury rates, operational safety and environmental performance. Financial strength and flexibility We are well positioned to fund our ongoing capital program with growing cash flow from new assets placed into service, an ‘A’ grade credit rating and a strong balance sheet. Maintaining our financial capacity and flexibility is critical to ensure we can always access capital to meet our needs. Over the last decade, we’ve invested $38 billion in long-term assets that have led to significant and stable growth in earnings, cash flow and dividends and a total annualized return to shareholders of 13.3 per cent per year since 2000. Looking forward, cash flow generated from operations is expected to grow as $12 billion of new assets begin contributing by 2015, and a further $13 billion are expected to be completed by the end of the decade. TransCanada has secured $25 billion worth of projects scheduled for completion by the end of the decade – $12 billion of which are expected on-line by 2015.

TransCanada is a leader in the responsible development and reliable operation of North American energy infrastructure, including natural gas and oil pipelines, power generation and natural gas storage facilities. Our Cartier Wind Energy project in Quebec is Canada’s largest wind power development.

Dedicated to Responsible Energy Development Building infrastructure today isn’t as easy as it has been in the past. The expectations of governments, regulators, customers and our stakeholders are much greater than they have ever been, resulting in new complexities and challenges for large-scale projects. At TransCanada, we recognize this new paradigm and are committed to continue doing things right because we know we will be in business for decades to come. We have a solid track record of responsible development across North America and we’ve also set a high standard when it comes to safety, stakeholder engagement, community investment and minimizing the environmental impact of our operations. Our vision is to be North America’s leading energy infrastructure company. But being the leader doesn’t just mean being the biggest. It means being the best at what we do and delivering on our commitments. Trust is built through open, honest and transparent communication with everyone involved in our projects, from landowners and community leaders to our business partners and even our opponents. We also recognize that sustainable practices lead to superior financial results. That’s why our research and development activities are focused on improving the efficiency and safety of our operations in areas such as pipeline material and design, construction and environmental reclamation techniques, turbine/compressor performance and greenhouse gas emissions reduction. We have been recognized for these efforts. For the eleventh year in a row, we were named to the World Dow Jones Sustainability Index, a global ranking system that tracks the performance of the leading sustainability-driven companies. We also joined the 2012 Carbon Disclosure Leadership Index, achieving a ranking of ninth in the Carbon Disclosure Project’s Canada 200 Report that tracks progress on corporate climate change initiatives. 2012 Annual Report TransCanada Corporation

Trust is built through open, honest and transparent communication with everyone involved in our projects, from landowners and community leaders to our business partners and even our opponents. The Keystone right-of-way (above) near David City, Nebraska, demonstrates our respect for the land and the environment. We are committed to ensuring that any land disturbed by pipeline construction is fully restored.

Oil Pipelines We’ve made significant progress on expanding our crude oil transportation business under our long-term strategy to connect growing crude oil production in Canada and the United States with the refining markets where it is needed. The Keystone Pipeline generated approximately $700 million in annual earnings before interest, taxes, depreciation and amortization (EBITDA) in 2012. Earnings from oil pipelines are expected to grow as we move forward with expansion plans including initiatives such as Keystone XL and the Gulf Coast Project. Following the denial of our original application for Keystone XL in January 2012, we chose to proceed with the southern portion of the pipeline from Cushing, Oklahoma to the Gulf Coast of Texas as a stand-alone project. In August we began construction on the 780-km (485-mile) pipeline known as the Gulf Coast Project after the President of the United States encouraged us to move forward with this critical piece of American energy infrastructure. Once complete in late 2013, this pipeline will begin transporting up to 700,000 bbl/d initially from the United States’ largest oil storage hub at Cushing to major Gulf Coast refineries near Houston and Port Arthur, Texas. We remain committed to building the Keystone XL Pipeline and continue to have strong support from our shippers who have underpinned this US$5.3 billion project with binding long-term contracts lasting an average of 18 years. In May 2012, we re-applied for a Presidential Permit for the 1,897-km (1,179-mile) Keystone XL Pipeline from Hardisty, Alberta to Steele City, Nebraska. Throughout 2012 we worked collaboratively with the State of Nebraska and Nebraska’s Department of Environmental Quality to develop a revised route through Nebraska that avoids the Sandhills area and minimizes potential impacts on other environmentally- sensitive features in the state. In January 2013, Nebraska Governor Dave Heineman approved the route. We look forward to moving ahead with the project once a decision on the Presidential Permit is made by the U.S. Department of State. Keystone XL is expected to begin operations in late 2014 or early 2015. With a capacity of 830,000 bbl/d, Keystone XL and the Gulf Coast Project have the potential to displace more than 10 per cent of total foreign crude oil imports to the United States and transport almost 250,000 bbl/d of U.S.-produced oil. Once approved, Keystone XL will create an estimated 9,000 American jobs during two years of construction. The project has undergone close to five years of study and environmental review, the most detailed and comprehensive regulatory review ever undertaken for a cross-border pipeline. Our leading safety record and proven ability to execute major projects has allowed us to become a significant player in meeting the needs of Alberta’s growing oil sands industry. The Canadian Association of Petroleum Producers forecasts oil sands production to more than triple by 2030. This unprecedented growth requires new pipeline infrastructure to move crude oil out of the Athabasca region, and in 2012 we were awarded $2.5 billion in new projects underpinned by long-term contracts. The Northern Courier, Grand Rapids and Hardisty Terminal expansion projects are targeted to be in service between 2014 and 2017. We are also exploring the opportunity to move significant volumes of crude oil to Eastern Canada by converting a portion of our Canadian Mainline natural gas pipeline to crude oil service. 2012 Annual Report TransCanada Corporation

We are building one of North America’s largest oil delivery systems – the Keystone System – a US$14 billion initiative with the capacity to move 1.4 million bbl/d from Western Canada and the United States to the U.S. Midwest and the Gulf Coast. With a capacity of 830,000 bbl/d, Keystone XL and the Gulf Coast Project have the potential to displace more than 10 per cent of total foreign crude oil imports to the United States and transport almost 250,000 bbl/d of U.S.-produced oil.

Natural Gas Pipelines The shifting supply and demand patterns for natural gas across North America have led to opportunities and challenges for us to restructure certain existing assets but also capture new projects to connect emerging supply basins with growing markets. The revolution in unconventional gas technology has altered the North American natural gas market. Shifting supply sources, low natural gas prices and generally low transportation values are challenges for many natural gas pipelines. We also anticipate there will be opportunities as the supply of natural gas increases and it becomes more competitively priced. North American demand is expected to rise by 15 billion cubic feet per day (Bcf/d) by 2020, as electricity generation shifts away from coal-fired plants and exports of liquefied natural gas (LNG) commence. Our strategy to capitalize on this growth is well underway, with over $12 billion in new gas pipeline projects announced over the past year. The Canadian Mainline delivered an average of 4.2 Bcf/d in 2012, making it the single largest gas delivery system on the continent. Usage patterns on the Mainline have changed significantly in recent years, with volumes from the Western Canada Sedimentary Basin (WCSB) falling by half while demand grows for short-haul transportation on the eastern end of the system. We have addressed this fundamental shift with a proposed restructuring of Mainline tolls and services that was the subject of a National Energy Board hearing in 2012. Our comprehensive restructuring proposal would enhance the competitiveness of WCSB gas for Western shippers and also addresses the changes in usage patterns across the system. We expect a decision on the application late in the first quarter or early in the second quarter of 2013 and look forward to implementing the approved changes that will provide a fair return on this regulated asset. In November 2012, we became the first company to begin importing natural gas into Canada from the Marcellus Shale formation in the northeastern United States. This involved a $130 million upgrade to the Mainline system in the Greater Toronto Area to accommodate imports of 400 million cubic feet per day. Upgrades and expansion of the Alberta System continue to progress, with $650 million completed this year and more than $2 billion of work is planned for completion by 2015. This natural gas pipeline network transports approximately 10 Bcf/d, or 70 per cent of the WCSB natural gas supply. The system supplies all of the natural gas required for Alberta’s growing oil sands production and will continue to be a critical gathering and delivery network for growing unconventional production in northwestern Alberta and northeastern British Columbia that would supply proposed LNG projects on the West Coast.

We operate one of North America’s largest natural gas pipeline networks – 68,500 kilometres (42,500 miles) – tapping into virtually every major gas  supply basin. TransCanada’s GTN pipeline connects the Western Canada Sedimentary Basin and Rocky Mountain Basin with pipelines that serve some of California’s largest utilities.

In June 2012, we were selected by Shell Canada Ltd. and its partners to design, build, own and operate the Coastal GasLink project, a $4 billion, 650-km (400-mile) pipeline to transport natural gas from the Montney producing region near Dawson Creek, B.C. to the proposed LNG Canada export facility near Kitimat, B.C. Coastal GasLink will have an initial capacity of 1.7 Bcf/d when it begins service towards the end of the decade and the pipeline’s capacity is fully subscribed under a long-term contract. This was followed in January 2013 by TransCanada being selected by Progress Energy Canada Ltd. to design, build, own and operate the $5 billion Prince Rupert Gas Transmission Project from the Montney region near Fort St. John, B.C. to the Pacific Northwest LNG facility planned near Prince Rupert, B.C. This 750-km (470-mile) pipeline will have an initial capacity of 2 Bcf/d and is expected to be in service by the end of 2018. We’ve begun initial community and Aboriginal engagement work along the conceptual routes for both these pipelines and will continue building relationships with First Nations, local governments, landowners and interested stakeholders as planning work continues. Some of TransCanada’s nine U.S. gas pipelines continue to face challenges related to low gas prices, shifting transportation patterns and natural gas storage values. Performance of these assets is expected to recover over the long-term, as many of these pipelines are well positioned to tap into growing production from emerging basins and supply increased power generation, along with industrial demand. Revenues from Northern Border, GTN and the Tuscarora Systems are anticipated to become more stable and consistent after negotiated rate settlements were reached with customers in the past couple of years. Great Lakes will have a process to establish new rates in 2013. We also continued to expand our presence across North America with significant growth underway in Mexico. Building on the successful completion of the $600 million Tamazunchale and Guadalajara pipelines, TransCanada was awarded contracts by Mexico’s federal state power company to build, own and operate three new pipelines in Mexico in 2012, representing a total investment worth US$1.9 billion. The Tamazunchale Extension, Topolobampo, and Mazatlan pipeline projects are all fully contracted for 25 years with the Comisión Federal de Electricidad (CFE). Our extensive experience in building and operating natural gas pipelines allowed us to win these projects. We have established a permanent presence in Mexico that positions the company for future opportunities as Mexico grows and replaces oil-fired power generation with less expensive and cleaner burning natural gas. North American natural gas demand is expected to rise by 15 Bcf/d by 2020. Our strategy to capitalize on this growth is well underway.

We deliver 20 per cent of the natural gas consumed in North America each day (approximately 14 Bcf/d) – heating homes, fueling power generation and industry.

Energy North American electricity demand is expected to grow one per cent annually until at least 2020, and numerous opportunities exist as many coal-fired facilities are replaced with more efficient and environmentally-friendly sources of power. In 2012, we placed $2.7 billion of new energy projects into service and added a new, $1 billion long-term contracted project, expanding our portfolio of energy assets that will generate stable earnings and cash flow. Bruce Power became one of the world’s largest nuclear facilities with the successful refurbishment of Bruce A Units 1 and 2, which returned to commercial operation in October 2012. Bruce Power’s eight nuclear reactors provide more than 6,200 MW, or about 25 per cent of Ontario’s power supply, under power purchase agreements (PPA) with the Ontario Power Authority (OPA). In November, the final phase of Canada’s largest wind farm was placed into service. TransCanada is a 62-per cent owner of Cartier Wind, which provides 590 MW of clean power under a 20-year PPA with Hydro Québec. Meanwhile, TransCanada’s $476 million investment in nine Canadian Solar projects will begin generating revenues in 2013 and 2014. The 86 MW solar facilities will provide power under a 20-year PPA with the OPA. The end of 2012 saw us reach an agreement with the OPA to build, own and operate a 900-MW natural gas-fired power plant in Greater Napanee under a 20-year PPA. The $1 billion facility will be located on the site of Ontario Power Generation’s Lennox Generating Station, taking advantage of existing power transmission and gas supply infrastructure, as well as the expertise of local workers. The Napanee Generating Station will replace the facility that was planned and subsequently cancelled in the community of Oakville. This past year also saw the resolution of two outstanding issues impacting our power assets, providing greater certainty for revenues in the coming years. In November, the U.S. Federal Energy Regulatory Commission ruled largely in our and other parties’ favour following the filing of a formal complaint against the New York Independent System Operator claiming it had improperly applied pricing rules which have negatively impacted New York capacity market prices since July of 2011. The ruling is expected to positively impact future capacity market prices for our Ravenswood generating station which can supply 20 per cent of New York City’s power. And in July, an independent arbitration panel determined that TransCanada’s PPA in the 560 MW Sundance A facility remains in effect after Sundance A Units 1 and 2 were withdrawn from service in December 2010. Revenues from Sundance A are expected to resume when the units are returned to service in the fall of 2013. 20 TransCanada’s Ravenswood Generating Station, a 2,480 MW power plant in Queens, New York, is capable of supplying 20 per cent of New York City’s power needs.

TransCanada owns or has interests in 21 power facilities in Canada and the United States, generating enough electricity for 12 million homes. TransCanada’s energy business continued its steady growth in 2012, with the completion of the refurbishment of Bruce Power A Units 1 and 2, making it one of the world’s largest nuclear facilities. Bruce Power, Western Ontario, Canada

Committed to Stakeholder Engagement We are committed to being a good neighbour and to building and maintaining positive relationships in the communities where we operate. Once in place, our facilities are part of the local community for generations. That’s why we treat all of the more than 60,000 landowners we deal with across North America as partners in our projects. From the initial stages of planning and construction, right through operations and eventual decommissioning, we engage early and often with everyone who may be affected by our activities. We approach negotiations with landowners with fairness and respect, providing reasonable compensation and working collaboratively to address issues or concerns, providing accurate information and responding to questions in a prompt and consistent manner. Our Stakeholder Engagement Framework clearly outlines our promise to stakeholders and provides guiding principles that all our employees and contractors are expected to follow. This approach has proven successful and has been recognized as industry-leading practice on projects across North America that have involved consultation with diverse and complex stakeholder interests. Our Native American and Aboriginal Relations Policies support the establishment of long-term working relationships with First Nations through cultural exchange and recognition of the diverse legal, social and economic realities of Aboriginal communities across North America. In addition to creating jobs and economic activity, we are also committed to building healthy, safe and vibrant communities where we live and work. Giving back to communities has been part of our culture for over 60 years. In 2012, we contributed more than $10 million to community non-profit organizations. We raised more than $2.5 million for 114 United Ways across North America, provided equipment and money for disaster relief efforts in New York following Hurricane Sandy, supported efforts to train military veterans for careers in the construction trades and completed a five-year program to protect important wildlife habitat along the Red Deer River in Alberta with the Nature Conservancy of Canada. Maintaining our social license to operate is critical to ensuring that we continue to develop the energy infrastructure North Americans rely on every day. By living our values of integrity, responsibility, collaboration and innovation, we are committed to conducting our business in a manner that will deliver sustainable, long-term value for our shareholders. | The safety of our employees, contractors, the environment and the communities where we operate remains our number one priority.

Positive stakeholder relationships can enhance opportunities and profitability. A strong and effective Stakeholder Engagement Framework can be a competitive advantage. Linda and Wesley Romero of Sour Lake, Texas, are some of the many landowners who have had strong and positive working relationships with TransCanada across North America.

Chairman’s Message S. Barry Jackson The development of North America’s energy infrastructure is a critical task and one where TransCanada continued to play a key role in 2012. The challenges are significant and growing, not only operationally but increasingly in political and social terms. In the face of those challenges, however, TransCanada has enjoyed considerable success. By 2015, we expect $12 billion in projects to move into operation: solar power facilities in Ontario, an extension of an existing natural gas pipeline in Mexico, further Alberta System expansions, a large oil terminal facility in Alberta, the Gulf Coast Project and of course the much discussed and anticipated Keystone XL Pipeline. Keystone remains a vital part of North American energy security by expanding Canadian export capacity and allowing North American markets access to lower priced, stable Canadian crude and U.S. domestic oil. The TransCanada team has done an admirable job of keeping this project moving forward and being sensitive to the new realities without getting caught up in the emotion often evident elsewhere. Looking ahead, there are tremendous opportunities for the company to continue to build all three core business areas: oil pipelines, gas pipelines and power. According to the International Energy Agency (IEA), the cumulative investment required for the growth and changeover in energy infrastructure in North America alone between 2010 and 2035 is nearly $6 trillion. The Board and management are very focused on pursuing these opportunities – ones that make economic and operational sense and where the company has a competitive advantage. The company currently has reached agreement to participate in a further $16 billion in projects including two multi-billion dollar natural gas pipelines in B.C. to transport natural gas to LNG facilities for export overseas, large gas pipeline projects in Mexico, oil pipelines in the heart of the Alberta oil sands and a large power facility in Ontario. With regard to broader governance TransCanada continues to enjoy recognition in the external community, receiving high marks in 2012 from well-respected independent corporate governance survey and assessment firms. This is entirely the result of a strong commitment to best practices. Internally, we are continuing through the Board transition that started in 2012; a process that will see six directors retire between 2012 and 2014. Unexpectedly, John McNaughton announced his retirement early in 2013 for health reasons. In addition, Dr. Linn Draper is retiring this spring as planned. Along with my fellow Board members, I would like to thank John and Linn for their dedicated service to the company and our shareholders. The consistency and quality of their guidance is unsurpassed and will be missed. Our Board, the executive and TransCanada’s 4,900 employees will continue the disciplined approach of living within the company’s means. I remain confident we will achieve our vision of being the leading North American energy infrastructure company, and we will continue to generate superior returns for our shareholders. S. Barry Jackson 2012 Annual Report TransCanada Corporation

Letter to Shareholders Russell K. Girling 2012 was a year marked by very public challenges for TransCanada but also remarkable accomplishments for our company as we progress towards our vision of being North America’s leading energy infrastructure company. TransCanada has become a household name across Canada and the United States, placing our activities under an unprecedented level of public scrutiny. Despite this added pressure, our talented staff and contractors continued to do what our customers and shareholders expect – build and operate safe and reliable facilities to deliver the natural gas, electricity and oil that millions of people count on every day to go about their daily lives. Having energy to keep lights on, buildings warm and vehicles fuelled is something many people take for granted, but it’s something we have been committed to doing responsibly every day for more than six decades and we are constantly finding new ways to do it in a safer and more efficient manner. In 2012, our core assets continued to perform safely and produce strong, secure returns. We met or exceeded all of our safety objectives, with operational performance in the top decile of our industry. The $1.89 per share we earned in 2012 was impacted by cyclically low gas and power prices, delays in the restart of Bruce Units 1 and 2, the life extension of Units 3 and 4, the Sundance A outage and lower contributions from certain natural gas pipelines including the Canadian Mainline, ANR and Great Lakes. We look forward to all eight reactors at Bruce Power being on-line, the return to service of Sundance A later in the year, and in the longer term, a recovery of gas and power prices. We remain focused on disciplined growth and operational excellence in all that we do. Since 1999 we’ve invested approximately $38 billion in long-life assets, which has led to significant growth in earnings, cash flow and dividends. Over that period, average annual total shareholder return was 13.3 per cent with dividends growing from $0.80 to $1.76 per share, a compound annual growth rate of seven per cent. Looking forward, our goal is to continue to grow our dividend in lock step with sustainable increases in cash flow and earnings. For 12 consecutive years TransCanada’s Board has raised the dividend. Today, TransCanada has an enterprise value of $56 billion, with blue chip energy infrastructure assets across seven Canadian provinces, 31 U.S. and five Mexican states. This very enviable footprint, that touches growing resource basins and taps into premium markets, positions us well for continued growth. During 2012, significant progress was made to secure and advance projects that provide a strong foundation for future growth and long-term value for TransCanada shareholders for decades to come. Despite the disappointment of being denied a Presidential Permit for Keystone XL on January 18, 2012, we were successful in moving forward with the southern portion of the pipeline as an independent initiative referred to as the Gulf Coast Project. Construction commenced on this 780-km (485-mile) project in August 2012, employing over 4,000 American workers. We remain on schedule to have this US$2.3 billion pipeline begin transporting crude oil from Cushing, Oklahoma to refineries on the Texas Gulf Coast by the end of 2013.

In May 2012 we re-applied for a Presidential Permit for the northern portion of Keystone XL as a 1,897-km (1,179-mile) pipeline from Hardisty, Alberta to Steele City, Nebraska. We spent much of 2012 working through a review process led by the Nebraska Department of Environmental Quality (NDEQ) to define a revised route through that state that avoids the environmentallysensitive Sandhills region and further reduces the potential for negative impacts on other important ecological features. The revised route in Nebraska took into account the input of hundreds of Nebraskans gathered over a seven month period. I am pleased to report that the NDEQ’s final evaluation of our preferred re-route confirmed that Keystone XL can be built and operated with minimal environmental impact in Nebraska and the route has been approved by the Governor. We look forward to moving ahead with this critical piece of North American energy infrastructure pending issuance of a Presidential Permit by the U.S. Department of State in the first half of 2013. Our oil pipeline division also made impressive inroads in the Alberta marketplace, securing $2.5 billion in new contracted projects to meet the growing demand for take-away capacity from the Athabasca oil sands. This includes our 50 per cent stake in the $3 billion Grand Rapids Pipeline project that will see TransCanada build, own and operate the first major pipeline to serve producers in the West Athabasca region. This success moves us one step closer to our long-term goal of developing integrated oil pipeline and terminalling service from the point of production to North America’s downstream refinery markets. TransCanada’s focus on safety and ability to navigate the increasingly difficult socio-political terrain of pipeline development were key factors in our being chosen to develop $9 billion in new natural gas pipelines across northern British Columbia to serve the emerging liquefied natural gas export market. In addition, we will be spending $2-3 billion to enhance and extend the Alberta System to connect these new export markets to the Alberta hub and we successfully capitalized on Mexico’s need for expanded gas infrastructure by being awarded the opportunity to build and operate three new pipelines worth US$1.9 billion. In addition, in 2011, our natural gas pipeline team developed a comprehensive restructuring proposal for services and tolls on the Canadian Mainline that more accurately reflects current usage of this important gas transmission infrastructure. This proposal was the subject of a lengthy hearing before the National Energy Board in 2012, in which TransCanada outlined how the plan balances the needs of all stakeholders and enhances the competitiveness of the Western Canada Sedimentary Basin. Longer term, we are very optimistic there will be an opportunity to repurpose a portion of the Mainline to move growing oil production in western Canada to refineries in eastern Canada that today import their feed stock from foreign suppliers. Our energy business continued its steady growth in 2012, with the completion of the Bruce Power A Units 1 and 2 refurbishment, the final phase of Canada’s largest wind farm, Cartier Wind, entering service and the commencement of construction of the first eight of our nine solar projects in Ontario. In addition, we were able to reach an agreement with the Ontario Power Authority to build a $1 billion, 900-MW natural gas-fired power plant in Greater Napanee. This project replaces the facility planned for Oakville that was cancelled by the Government of Ontario and resolved the outstanding contract issues related to the cancellation. As Canada’s largest private-sector power generator, we now control 11,800 MWs of electricity, one-third of which comes from alternative and renewable sources. The fundamental long-term growth outlook for natural gas, crude oil production and power presents significant opportunities for TransCanada to continue reinvesting our strong and growing cash flow in all three of our core businesses. The environment will be increasingly complex and challenging, but we are prepared to meet these challenges with more than 60 years of experience, an industry-leading safety record, access to the latest technology, and the skill and dedication of our 4,900 employees who take pride in their work and the communities in which they live. Thank you for your support as we continue to build upon our success in the year ahead. Russell K. Girling President and Chief Executive Officer 2012 Annual Report TransCanada Corporation

Management's discussion and analysis

February 11, 2013

This management's discussion and analysis (MD&A) contains information to help the reader make investment decisions about TransCanada Corporation. It discusses our business, operations, financial position, risks and other factors for the year ended December 31, 2012. Comparative figures, which were previously presented in accordance with Canadian generally accepted accounting principles (as defined in Part V of the Canadian Institute of Chartered Accountants Handbook), have been adjusted as necessary to be compliant with our accounting policies under United States generally accepted accounting principles (U.S. GAAP), which we adopted effective January 1, 2012.

This MD&A should be read with our accompanying December 31, 2012 audited comparative consolidated financial statements and notes for the same period, which have been prepared in accordance with U.S. GAAP.

Contents

ABOUT THIS DOCUMENT		2
ABOUT OUR BUSINESS		4
	•  Three Core Businesses	4
	•  A long-term strategy	7
	•  2012 financial highlights	8
	•  Outlook	13
	•  Non-GAAP measures	14
NATURAL GAS PIPELINES		17
OIL PIPELINES		33
ENERGY		43
CORPORATE		64
FINANCIAL CONDITION		65
OTHER INFORMATION		71
	•  Risks and risk management	71
	•  Controls and procedures	77
	•  CEO and CFO certifications	78
	•  Critical accounting policies and estimates	78
	•  Financial instruments	82
	•  Accounting changes	89
	•  Quarterly results	90
GLOSSARY		96

2012 Management's discussion and analysis -- 1

About this document

Throughout this MD&A, the terms, we, us, our and TransCanada mean TransCanada Corporation and its subsidiaries.

Abbreviations and acronyms that are not defined in the document are defined in the glossary on page 96.

All information is as of February 11, 2013 and all amounts are in Canadian dollars, unless noted otherwise.

FORWARD-LOOKING INFORMATION
We disclose forward-looking information to help current and potential investors understand management's assessment of our future plans and financial outlook, and our future prospects overall.

Statements that are forward-looking are based on certain assumptions and on what we know and expect today and generally include words like anticipate, expect, believe, may, will, should, estimate or other similar words.

Forward-looking statements in this MD&A may include information about the following, among other things:

•

anticipated business prospects

•

our financial and operational performance, including the performance of our subsidiaries

•

expectations or projections about strategies and goals for growth and expansion

•

expected cash flows

•

expected costs for planned projects, including projects under construction and in development

•

expected schedules for planned projects (including anticipated construction and completion dates)

•

expected regulatory processes and outcomes

•

expected outcomes with respect to legal proceedings, including arbitration

•

expected capital expenditures and contractual obligations

•

expected operating and financial results

•

the expected impact of future commitments and contingent liabilities

•

expected industry, market and economic conditions.

Forward-looking statements do not guarantee future performance. Actual events and results could be significantly different because of assumptions, risks or uncertainties related to our business or events that happen after the date of this MD&A.

Our forward-looking information is based on the following key assumptions, and subject to the following risks and uncertainties:

Assumptions

•

inflation rates, commodity prices and capacity prices

•

timing of debt issuances and hedging

•

regulatory decisions and outcomes

•

foreign exchange rates

•

interest rates

•

tax rates

•

planned and unplanned outages and the use of our pipeline and energy assets

•

integrity and reliability of our assets

•

access to capital markets

•

anticipated construction costs, schedules and completion dates

•

acquisitions and divestitures.

2 -- TransCanada Corporation

Risks and uncertainties

•

our ability to successfully implement our strategic initiatives

•

whether our strategic initiatives will yield the expected benefits

•

the operating performance of our pipeline and energy assets

•

amount of capacity sold and rates achieved in our U.S. pipelines business

•

the availability and price of energy commodities

•

the amount of capacity payments and revenues we receive from our energy business

•

regulatory decisions and outcomes

•

outcomes of legal proceedings, including arbitration

•

performance of our counterparties

•

changes in the political environment

•

changes in environmental and other laws and regulations

•

competitive factors in the pipeline and energy sectors

•

construction and completion of capital projects

•

labour, equipment and material costs

•

access to capital markets

•

cybersecurity

•

interest and foreign exchange rates

•

weather

•

technological developments

•

economic conditions in North America as well as globally.

You can read more about these factors and others in reports we have filed with Canadian securities regulators and the U.S. Securities and Exchange Commission (SEC).

You should not put undue reliance on forward-looking information and should not use future-oriented information or financial outlooks for anything other than their intended purpose. We do not update our forward-looking statements due to new information or future events, unless we are required to by law.

FOR MORE INFORMATION
See Supplementary information beginning on page 181 for other consolidated financial information on TransCanada for the last three years.

You can also find more information about TransCanada in our annual information form and other disclosure documents, which are available on SEDAR (www.sedar.com).

2012 Management's discussion and analysis -- 3

About our business

With over 60 years of experience, TransCanada is a leader in the responsible development and reliable operation of North American energy infrastructure including natural gas and oil pipelines, power generation and natural gas storage facilities.

THREE CORE BUSINESSES
We operate our business in three segments – Natural Gas Pipelines, Oil Pipelines and Energy. We also have a non-operational corporate segment consisting of corporate and administrative functions that provide support and governance to our operational business segments.

Our $48 billion portfolio of energy infrastructure assets meets the needs of people who rely on us to deliver their energy safely and reliably every day. We operate in seven Canadian provinces, 31 U.S. states, Mexico and three South American countries.

4 -- TransCanada Corporation

2012 Management's discussion and analysis -- 5

at December 31 (millions of $)	2012	2011	% change
Total assets
Natural Gas Pipelines	23,210	23,161	-
Oil Pipelines	10,485	9,440	11%
Energy	13,157	13,269	(1%	)
Corporate	1,481	1,468	(1%	)
Total	48,333	47,338	2%

year ended December 31 (millions of $)	2012	2011	% change
Total revenue
Natural Gas Pipelines	4,264	4,244	1%
Oil Pipelines	1,039	827	26%
Energy	2,704	2,768	(2%	)
Corporate	-	-	-
Total	8,007	7,839	2%

year ended December 31 (millions of $)	2012		2011		% change
Comparable EBIT 1
Natural Gas Pipelines	1,808		1,952		(7%	)
Oil Pipelines	553		457		21%
Energy	620		907		(32%	)
Corporate	(111	)	(100	)	(11%	)
Total	2,870		3,216		(11%	)

1

Comparable EBIT is a non-GAAP measure – see page 14 for details.

Share price of our common shares
at December 31

Common shares outstanding – average

(millions)
2012	705
2011	702
2010	691

as at February 6, 2013 Common shares	Issued and outstanding
	706 million

Preferred shares	Issued and outstanding	Convertible to
Series 1	22 million	22 million Series 2 preferred shares
Series 3	14 million	14 million Series 4 preferred shares
Series 5	14 million	14 million Series 6 preferred shares

Options to buy common shares	Outstanding	Exercisable
	7 million	4 million

6 -- TransCanada Corporation

A LONG-TERM STRATEGY
Our energy infrastructure business is made up of pipeline and power generation assets that gather, transport, produce, store or deliver natural gas, crude oil and other petroleum products and electricity to support businesses and communities in North America.

TransCanada's vision is to be the leading energy infrastructure company in North America, focusing on pipeline and power generation opportunities in regions where we have or can develop a significant competitive advantage.

Key components of our strategy

1 Maximize the full-life value of our infrastructure assets and commercial positions
	Our strategy at a glance
	•  Long-life infrastructure assets and long-term commercial arrangements are the cornerstones of our low-risk business model. •  Our pipeline assets include large-scale natural gas and crude oil pipelines that connect long-life supply basins with stable and growing markets, generating predictable and sustainable cash flows and earnings. •  In Energy, efficient, large-scale power generation facilities supply power markets through long-term power purchase and sale agreements and low-volatility shorter-term commercial arrangements. Our growing investment in natural gas, nuclear, wind, hydro and solar generating facilities demonstrate our commitment to clean, sustainable energy.
2 Commercially develop and build new asset investment programs
	Our strategy at a glance
	•  We are developing quality projects under our current $12 billion capital program. These will contribute incremental earnings as our investments are placed in service. •  Our expertise in managing construction risks and maximizing capital productivity ensures a disciplined approach to quality, cost and schedule, resulting in superior service for our customers and quality returns to shareholders. •  As part of our growth strategy, we rely on this expertise and our regulatory, legal and operational expertise to successfully build and integrate new energy and pipeline facilities.
3 Cultivate a focused portfolio of high quality development options
	Our strategy at a glance
	•  We focus on pipelines and energy growth initiatives in core regions of North America. •  We are assessing opportunities to acquire energy infrastructure that complements our existing pipeline network and provides access to new supply and market regions. •  We will advance selected opportunities to full development and construction when market conditions are appropriate and project risks are acceptable.
4 Maximize our competitive strengths
	Our strategy at a glance
	•  We are continually developing competitive strengths in areas that directly drive long-term shareholder value.

A competitive advantage
Years of experience in the energy infrastructure business and a disciplined approach to project and operational management and capital investment give TransCanada our competitive edge.

•  Strong leadership: scale, presence, operating capabilities, strategy development; expertise in regulatory, legal and financing support.

•  High quality portfolio: a low-risk business model that maximizes the full-life value of our long-life assets and commercial positions.

•  Disciplined operations: highly skilled in designing, building and operating energy infrastructure; focus on operational excellence; and a commitment to health, safety and the environment are paramount parts of our core values.

•  Financial expertise: excellent reputation for consistent financial performance and long-term financial stability and profitability; disciplined approach to capital investment; ability to access sizeable amounts of competitively priced capital to support our growth.

•  Long-term relationships: long-term, transparent relationships with key customers and stakeholders; clear communication of our value to equity and debt investors – both the upside and the risks – to build trust and support.

2012 Management's discussion and analysis -- 7

2012 FINANCIAL HIGHLIGHTS
We use certain financial measures that do not have a standardized meaning under U.S. GAAP because we believe they improve our ability to compare results between reporting periods, and enhance understanding of our operating performance. Known as non-GAAP measures, they may not be comparable to similar measures provided by other companies.

See page 14 for more information about the non-GAAP measures we use and a reconciliation to their GAAP equivalents.

Highlights
Comparable EBITDA (earnings before interest, taxes, depreciation and amortization), comparable EBIT (earnings before interest and taxes), comparable earnings, comparable earnings per common share and funds generated from operations are all non-GAAP measures. See page 14 for more information.

year ended December 31 (millions of $, except per share amounts)		2012	2011	2010
Income
Revenue		8,007	7,839	6,852
Comparable EBITDA		4,245	4,544	3,686
Net income attributable to common shares		1,299	1,526	1,233
	per common share – basic	$1.84	$2.17	$1.79
	per common share – diluted	$1.84	$2.17	$1.78
Comparable earnings		1,330	1,559	1,357
	per common share	$1.89	$2.22	$1.97
Operating cash flow
Funds generated from operations		3,284	3,451	3,161
Decrease/(increase) in working capital		287	235	(285)
Net cash provided by operations		3,571	3,686	2,876
Investing activities
Capital expenditures		2,595	2,513	4,376
Equity investments		652	633	597
Acquisitions, net of cash acquired		214	-	-
Balance sheet
Total assets		48,333	47,338	45,249
Long-term debt		18,913	18,659	18,016
Junior subordinated notes		994	1,016	993
Preferred shares		1,224	1,224	1,224
Common shareholders' equity		15,687	15,570	15,133
Dividends
	per common share	1.76	1.68	1.60
	per Series 1 preferred share	1.15	1.15	1.15
	per Series 3 preferred share	1.00	1.00	0.80
	per Series 5 preferred share	1.10	1.10	0.65

8 -- TransCanada Corporation

Comparable earnings and net income

Comparable earnings
Comparable earnings in 2012 were $229 million lower than 2011, a decrease of $0.33 per share.

The decrease in comparable earnings was the result of:

•

lower earnings from Western Power reflecting a full year of the Sundance A PPA force majeure

•

lower equity income from Bruce Power because of increased outage days

•

recording lower Canadian Mainline net income in 2012 which excluded incentive earnings and reflected a lower investment base

•

lower earnings from Great Lakes which reflected lower revenues as a result of lower rates and uncontracted capacity

•

lower earnings from ANR because of lower transportation and storage revenues, lower incidental commodity sales and higher operating costs

•

lower earnings from U.S. Power due to lower realized prices, higher load serving costs and reduced water flows at the hydro facilities

•

higher comparable interest expense, mainly because of new debt issuances in November 2011, March 2012 and August 2012

These decreases were partially offset by:

•

a full year of revenue from Guadalajara pipeline

•

higher Keystone Pipeline System revenues primarily due to higher contracted volumes and a full year of earnings being recorded in 2012 compared to 11 months in 2011

•

incremental earnings from Cartier Wind and Coolidge

•

higher comparable interest income and other, mainly because we realized higher gains on derivatives used to manage our exposure to foreign exchange rate fluctuations on U.S. dollar-denominated income

•

lower comparable income taxes due to lower pre-tax earnings.

2012 Management's discussion and analysis -- 9

2011 comparable earnings were $202 million higher than 2010, an increase of $0.26 per share and comparable EBIT was $690 million higher than 2010 resulting from:

•

higher Natural Gas Pipelines comparable EBIT increased because we placed Bison in service in January and Guadalajara in service in June 2011, general, administrative and support costs were lower, and business development spending was lower. This was partly offset by lower revenues from certain U.S. pipelines and the negative impact of a weaker U.S. dollar.

•

higher Oil Pipelines comparable EBIT as we began recording earnings from the Keystone Pipeline System in February 2011

•

higher Energy comparable EBIT because realized power prices at Western Power were higher, combined with a full year of earnings from Halton Hills and the start up of Coolidge. This was partly offset by lower contributions from Bruce B, Natural Gas Storage and U.S. Power

•

higher comparable interest expense, mainly because:

•

we placed the Keystone Pipeline System and other new assets in service, which reduced capitalized interest

•

we issued U.S. dollar-denominated debt in June and September 2010, which increased interest expense

•

partly offset by the realization of gains on derivatives used to manage our exposure to rising interest rates

•

and a weaker U.S. dollar reduced our U.S. dollar-denominated interest expense

•

lower comparable interest income and other, mainly due to reduced gains on the derivatives we used to manage our exposure to foreign exchange rate fluctuations on U.S. dollar-denominated income

•

higher comparable income taxes, because pre-tax earnings were higher and higher positive income tax adjustments in 2010 compared to 2011.

Net income attributable to common shares
Net income attributable to common shares in 2012 was $1,299 million (2011 – $1,526 million; 2010 – $1,233 million).

Net income includes comparable earnings discussed above as well as other specific items which are excluded from comparable earnings. The following specific items were recognized in net income in 2010 to 2012:

•

a negative after-tax charge of $15 million ($20 million pre-tax) was included in net income following the Sundance A power purchase arrangement (PPA) arbitration decision. This charge was recorded in second quarter 2012 but related to amounts originally recorded in fourth quarter 2011

•

a negative after-tax charge of $127 million ($146 million pre-tax) was included in net income after we recorded a valuation provision against the loan to the Aboriginal Pipeline Group (APG) relating to the Mackenzie Gas Project (MGP). This charge was recorded in fourth quarter 2010.

•

the impact of certain risk management activities each year. See page 14 for explanation of specific items in Non-GAAP measures.

Cash flow

Funds generated from operations
Funds generated from operations was five per cent lower this year primarily for the same reasons comparable earnings were lower, as described above.

10 -- TransCanada Corporation

Funds used in investing

Capital expenditures
We invested $2.6 billion in capital projects this year as part of our ongoing capital program. This program is a key part of our strategy to optimize the value of our existing assets and develop new, complementary assets in high demand areas.

Capital expenditures

year ended December 31, 2012 (millions of $)
Natural Gas Pipelines	1,389
Oil Pipelines	1,145
Energy	24
Corporate	37

Equity investments and acquisitions
In 2012, we invested $0.7 billion into Bruce Power for capital projects which included the restart of Units 1 and 2 and the West Shift Plus life extension outage on Unit 3. We also spent $0.2 billion on the acquisition of the remaining 40 per cent interest in CrossAlta.

Balance sheet
We maintained a strong balance sheet while growing our total assets by over $3 billion since 2010. At December 31, 2012, common equity represented 42 per cent of our capital structure.

Dividends
We increased the quarterly dividend on our outstanding common shares by five per cent to $0.46 per share for the quarter ending March 31, 2013. This equates to an annual dividend of $1.84 per share. This is the 13th consecutive year we have increased the dividend on our common shares. Our dividend has increased at a compound average growth rate of seven per cent since 2000.

2012 Management's discussion and analysis -- 11

Dividend reinvestment plan
Under our dividend reinvestment plan (DRP), eligible holders of TransCanada common or preferred shares and preferred shares of TCPL, can reinvest their dividends and make optional cash payments to buy TransCanada common shares.

Before April 28, 2011, common shares purchased with reinvested cash dividends were satisfied with shares issued from treasury at a discount to the average market price in the five days before dividend payment. Beginning with the dividends declared in April 2011, common shares purchased with reinvested cash dividends are satisfied with shares acquired on the open market without discount. The increase in dividends paid on common shares (see below) is, in part, the result of this change combined with the impact of an annual five per cent increase in the dividend rate between 2010 and 2012 from $1.60 to $1.76 per share.

Quarterly dividend on our common shares
$0.46 per share (for the quarter ending March 31, 2013)

Quarterly dividends on our preferred shares
Series 1 $0.2875 (for the quarter ending March 31, 2013)

Series 3 $0.25 (for the quarter ending March 31, 2013)

Series 5 $0.275 (for the three month period ending April 30, 2013)

Cash dividends year ended December 31 (millions of $)	2012	2011	2010
Common shares	1,226	961	710
Preferred shares	55	55	44

Refer to the Results section in each business segment and the Financial Condition section of this MD&A for further discussion of these highlights.

12 -- TransCanada Corporation

OUTLOOK

Earnings
We anticipate earnings in 2013 to be higher than 2012, mainly due to the following:

•

incremental earnings from Bruce A Units 1 and 2 and fewer planned outage days at Bruce A

•

higher New York capacity prices as a result of a September 2012 Federal Energy Regulatory Commission (FERC) order

•

higher earnings from the Alberta System due to a higher investment base

•

return to service of Sundance A in fall 2013

•

acquisition of several Ontario Solar assets over the course of 2013 and 2014

A favourable decision by the National Energy Board (NEB) on the Canadian Mainline Business and Services Restructuring Proposal and 2012 and 2013 Mainline Final Tolls Application (Canadian Restructuring Proposal) would have a positive impact on 2013 earnings.

These increases in earnings will be partially offset by higher operating, maintenance and administration (OM&A), general and administrative and corporate and governance costs, lower EBIT from U.S. Pipelines and higher outage days at Bruce B.

EBIT

Natural Gas Pipelines
EBIT from the Natural Gas Pipelines segment in 2013 will be affected by regulatory decisions and the timing of those decisions, including decisions about the Canadian Restructuring Proposal. Earnings will also be affected by market conditions, which drive the level of demand and rates we are able to secure for our services. Today's North American natural gas market is characterized by strong natural gas production, low natural gas prices and low values for storage and transportation services, which we expect to have a negative impact on U.S. Pipelines revenue in 2013.

Until we receive the NEB's decision with respect to the Canadian Restructuring Proposal, earnings from the Canadian Mainline will continue to reflect the last approved rate of return on common equity (ROE) of 8.08 per cent on deemed common equity of 40 per cent, and will exclude incentive earnings that have enhanced Canadian Mainline's earnings in recent years. If the 2012 and 2013 tolls are approved as filed, earnings in 2013 will reflect a higher ROE equivalent to an ROE of 12 per cent on deemed common equity of 40 per cent for 2012 and 2013. We also expect higher earnings from the Alberta System because of continued growth in the investment base.

Oil Pipelines
We expect 2013 EBIT from the Oil Pipelines segment to be consistent with 2012 as the Gulf Coast Project, currently under construction, is expected to be placed in service at the end of 2013.

Energy
We expect 2013 EBIT from the Energy segment to be higher than 2012, mainly due to the following:

•

incremental earnings from Bruce A Units 1 and 2 and lower planned outage days at Bruce A

•

a full year of operations from the Gros-Morne Wind farm, which was placed in service in fourth quarter 2012

•

higher New York capacity prices as a result of the September 2012 FERC order affecting pricing rules for new entrants

•

the return to service of Sundance A in fall 2013

•

the acquisition of several Ontario Solar assets in 2013

•

incremental earnings from acquiring the remaining 40 per cent interest in CrossAlta in late December 2012.

We expect these increases to be partially offset by higher outage days at Bruce B and higher Bruce A and B pension and staff costs.

Although a significant portion of Energy's output is sold under long-term contracts, output that is sold under shorter-term forward arrangements or at spot prices will continue to be affected by fluctuations in commodity prices.

Consolidated capital expenditures, equity investments and acquisitions
We spent $3.5 billion on capital expenditures, equity investments and acquisitions in 2012 and expect to spend approximately $6.4 billion in 2013 primarily related to Keystone XL, Gulf Coast Project, Alberta System expansions, the Tamazunchale Extension project, the Topolobampo and Mazatlan pipelines in Mexico and maintenance projects on our natural gas pipelines.

2012 Management's discussion and analysis -- 13

NON-GAAP MEASURES
We use the following non-GAAP measures:

•

EBITDA

•

EBIT

•

comparable earnings

•

comparable earnings per common share

•

comparable EBITDA

•

comparable EBIT

•

comparable interest expense

•

comparable interest income and other

•

comparable income taxes

•

funds generated from operations.

These measures do not have any standardized meaning as prescribed by U.S. GAAP and therefore may not be comparable to similar measures presented by other entities.

EBITDA and EBIT
We use EBITDA as an approximate measure of our pre-tax operating cash flow. It measures our earnings before deducting interest and other financial charges, income taxes, depreciation and amortization, net income attributable to non-controlling interests and preferred share dividends, and includes income from equity investments. EBIT measures our earnings from ongoing operations and is a better measure of our performance and an effective tool for evaluating trends in each segment. It is calculated in the same way as EBITDA, less depreciation and amortization.

Funds generated from operations
Funds generated from operations includes net cash provided by operations before changes in operating working capital. We believe it is a better measure of our consolidated operating cashflow because it does not include fluctuations from working capital balances, which do not necessarily reflect underlying operations in the same period. See page 8 for a reconciliation to net cash provided by operations.

Comparable measures
We calculate the comparable measures by adjusting certain GAAP and non-GAAP measures for specific items we believe are significant but not reflective of our underlying operations in the period.

Comparable measure	Original measure
comparable earnings	net income attributable to common shares
comparable earnings per common share	net income per common share
comparable EBITDA	EBITDA
comparable EBIT	EBIT
comparable interest expense	interest expense
comparable interest income and other	interest income and other
comparable income taxes	income tax expense/(recovery)

Our decision not to include a specific item is subjective and made after careful consideration. These may include:

•

certain fair value adjustments relating to risk management activities

•

income tax refunds and adjustments

•

gains or losses on sales of assets

•

legal and bankruptcy settlements, and

•

write-downs of assets and investments.

We calculate comparable earnings by excluding the unrealized gains and losses from changes in the fair value of certain derivatives used to reduce our exposure to certain financial and commodity price risks. These derivatives provide effective economic hedges, but do not meet the criteria for hedge accounting. As a result, the changes in fair value are recorded in net income. As these amounts do not accurately reflect the gains and losses that will be realized at settlement, we do not consider them part of our underlying operations.

14 -- TransCanada Corporation

Reconciliation of non-GAAP measures

year ended December 31 (millions of $, except per share amounts)		2012	2011	2010
Comparable EBITDA		4,245	4,544	3,686
Depreciation and amortization		(1,375)	(1,328)	(1,160)
Comparable EBIT		2,870	3,216	2,526
Other income statement items
Comparable interest expense		(976)	(939)	(701)
Comparable interest income and other		86	60	94
Comparable income taxes		(477)	(594)	(402)
Net income attributable to non-controlling interests		(118)	(129)	(115)
Preferred share dividends		(55)	(55)	(45)
Comparable earnings		1,330	1,559	1,357
Specific items (net of tax)
	Sundance A PPA arbitration decision	(15)	-	-
	Risk management activities1	(16)	(33)	3
	Valuation provision for MGP	-	-	(127)
Net income attributable to common shares		1,299	1,526	1,233
Comparable interest expense		(976)	(939)	(701)
Specific item:
	Risk management activities1	-	2	-
Interest expense		(976)	(937)	(701)
Comparable interest income and other		86	60	94
Specific item:
	Risk management activities1	(1)	(5)	-
Interest income and other		85	55	94
Comparable income taxes		(477)	(594)	(402)
Specific item:
	Sundance A PPA arbitration decision	5	-	-
	Risk management activities1	6	19	(4)
	Valuation provision for MGP	-	-	19
Income taxes expense		(466)	(575)	(387)
Comparable earnings per common share		$1.89	$2.22	$1.97
Specific item (net of tax):
	Sundance A PPA arbitration decision	(0.02)	-	-
	Risk management activities1	(0.03)	(0.05)	-
	Valuation provision for MGP	-	-	(0.18)
Net income per common share		$1.84	$2.17	$1.79

1

year ended December 31 (millions of $)	2012	2011	2010
Canadian Power	4	1	-
U.S. Power	(1)	(48)	2
Natural Gas Storage	(24)	(2)	5
Interest rate	-	2	-
Foreign exchange	(1)	(5)	-
Income taxes attributable to risk management activities	6	19	(4)
Total gains (losses) from risk management activities	(16)	(33)	3

2012 Management's discussion and analysis -- 15

EBITDA and EBIT by business segment

year ended December 31, 2012 (millions of $)	Natural Gas Pipelines	Oil Pipelines	Energy	Corporate	Total
Comparable EBITDA	2,741	698	903	(97)	4,245
Depreciation and amortization	(933)	(145)	(283)	(14)	(1,375)
Comparable EBIT	1,808	553	620	(111)	2,870

year ended December 31, 2011 (millions of $)
Comparable EBITDA	2,875	587	1,168	(86)	4,544
Depreciation and amortization	(923)	(130)	(261)	(14)	(1,328)
Comparable EBIT	1,952	457	907	(100)	3,216

year ended December 31, 2010 (millions of $)
Comparable EBITDA	2,816	-	969	(99)	3,686
Depreciation and amortization	(913)	-	(247)	-	(1,160)
Comparable EBIT	1,903	-	722	(99)	2,526

16 -- TransCanada Corporation

Natural Gas Pipelines

Our natural gas pipeline network transports natural gas to local distribution companies, power generation facitilities and other businesses across Canada, the U.S. and Mexico. We serve approximately 15 per cent of the U.S. demand and more than 80 per cent of the Canadian demand on a daily basis by connecting major natural gas supply basins and markets through:

•

wholly owned natural gas pipelines – 57,000 km (35,500 miles), and

•

partially owned natural gas pipelines – 11,500 km (7,000 miles).

We have regulated natural gas storage facilities in Michigan with a total capacity of 250 Bcf, making us one of the largest providers of natural gas storage and related services in North America.

Strategy at a glance
Optimizing the value of our existing natural gas pipelines systems, while responding to the changing flow patterns of natural gas in North America, is a top priority.

We are also pursuing new pipeline projects to add incremental value to our business. Our key areas of focus include greenfield development opportunities, such as infrastructure for liquefied natural gas (LNG) exports and within Mexico, as well as other opportunities that connect natural gas pipelines to emerging Canadian and U.S. shale gas and other supplies to market and play a critical role in meeting the increasing demand for natural gas in North America.

2012 Management's discussion and analysis -- 17

18 -- TransCanada Corporation

We are the operator of all of the following natural gas pipelines and storage assets except for Iroquois.

		length	description	effective ownership
	Canadian pipelines
1	Alberta System	24,337 km (15,122 miles)	Gathers and transports natural gas within Alberta and Northeastern B.C., and connects with Canadian Mainline, Foothills system and third-party pipelines	100%
2	Canadian Mainline	14,101 km (8,762 miles)	Transports natural gas from the Alberta/Saskatchewan border to the Québec/Vermont border, and connects with other natural gas pipelines in Canada and the U.S.	100%
3	Foothills	1,241 km (771 miles)	Transports natural gas from central Alberta to the U.S. border for export to the U.S. midwest, Pacific northwest, California and Nevada	100%
4	Trans Québec & Maritimes (TQM)	572 km (355 miles)	Connects with Canadian Mainline near the Ontario/Québec border to transport natural gas to the Montreal to Québec City corridor, and connects with the Portland pipeline system that serves the northeast U.S.	50%
	U.S. pipelines
	ANR
5	Pipeline	16,656 km (10,350 miles)	Transports natural gas from producing fields in Texas and Oklahoma, from offshore and onshore regions of the Gulf of Mexico and from the U.S. midcontinent, for delivery mainly to Wisconsin, Michigan, Illinois, Indiana and Ohio. Connects with Great Lakes	100%
5a	Storage	250 billion cubic feet	Provides regulated underground natural gas storage service from facilities located in Michigan
6	Bison	487 km (303 miles)	Transports natural gas from the Powder River Basin in Wyoming to Northern Border in North Dakota. We effectively own 83.3 per cent of the system through the combination of our 75 per cent direct ownership interest and our 33.3 per cent interest in TC PipeLines, LP	83.3%
7	Gas Transmission Northwest (GTN)	2,178 km (1,353 miles)	Transports natural gas from the Western Canada Sedimentary Basin (WCSB) and the Rocky Mountains to Washington, Oregon and California. Connects with Tuscarora and Foothills. We effectively own 83.3 per cent of the system through the combination of our 75 per cent direct ownership interest and our 33.3 per cent interest in TC PipeLines, LP	83.3%
8	Great Lakes	3,404 km (2,115 miles)	Connects with ANR and the Canadian Mainline near Emerson, Manitoba, to transport natural gas to eastern Canada, and the U.S. upper Midwest. We effectively own 69.0 per cent of the system through the combination of our 53.6 per cent direct ownership interest and our 33.3 per cent interest in TC PipeLines, LP	69%
9	Iroquois	666 km (414 miles)	Connects with Canadian Mainline near Waddington, New York to deliver natural gas to customers in the U.S. northeast	44.5%

2012 Management's discussion and analysis -- 19

		length	description	effective ownership
	U.S. pipelines
10	North Baja	138 km (86 miles)	Transports natural gas between Ehrenberg, Arizona and Ogilby, California, and connects with a third-party natural gas system on the California/Mexico border. We effectively own 33.3 per cent of the system through our 33.3 per cent interest in TC PipeLines, LP	33.3%
11	Northern Border	2,265 km (1,407 miles)	Transports natural gas through the U.S. Midwest, and connects with Foothills near Monchy, Saskatchewan. We effectively own 16.7 per cent of the system through our 33.3 per cent interest in TC PipeLines, LP	16.7%
12	Portland	474 km (295 miles)	Connects with TQM near East Hereford, Québec, to deliver natural gas to customers in the U.S. northeast	61.7%
13	Tuscarora	491 km (305 miles)	Transports natural gas from GTN at Malin, Oregon to Wadsworth, Nevada, and delivers gas in northeastern California and northwestern Nevada. We effectively own 33.3 per cent of the system through our 33.3 per cent interest in TC PipeLines, LP	33.3%
	Mexican pipelines
14	Guadalajara	310 km (193 miles)	Transports natural gas from Manzanillo to Guadalajara in Mexico	100%
15	Tamazunchale	130 km (81 miles)	Transports natural gas from Naranjos, Veracruz in east central Mexico to Tamazunchale, San Luis Potos, Mexico	100%
	Under construction
16	Mazatlan Pipeline	413 km (257 miles)	To deliver natural gas from El Oro to Mazatlan, Mexico. Connects to the Topolobampo Pipeline Project	100%
17	Tamazunchale Pipeline Extension	235 km (146 miles)	Extend existing terminus of the Tamazunchale Pipeline to deliver natural gas to power generating facilities in El Sauz, Queretaro, Mexico	100%
18	Topolobampo Pipeline	530 km (329 miles)	To deliver natural gas from Chihuahua to Topolobampo, Mexico	100%
	In development
19	Alaska Pipeline Project	2,737 km (1,700 miles)	To transport natural gas from Prudhoe Bay to Alberta, or from Prudhoe Bay to LNG facilities in south-central Alaska. We have an agreement with ExxonMobil to jointly advance the projects
20	Coastal GasLink	650 km* (404 miles)	To deliver natural gas from the Montney gas-producing region near Dawson Creek, B.C. to LNG Canada's proposed LNG facility near Kitimat, B.C.
21	Prince Rupert Gas Transmission Project	750 km* (466 miles)	To deliver natural gas from North Montney gas producing region near Fort St. John, B.C. to the proposed Pacific Northwest LNG facility near Prince Rupert, B.C.
*	Pipe lengths are estimates as final route is still under design

20 -- TransCanada Corporation

RESULTS

Natural Gas Pipelines results
Comparable EBITDA, comparable EBIT and EBIT are all non-GAAP measures. See page 14 for more information.

year ended December 31 (millions of $)		2012	2011	2010
Canadian Pipelines
Canadian Mainline		994	1,058	1,054
Alberta System		749	742	742
Foothills		120	127	135
Other Canadian (TQM1, Ventures LP)		29	34	33
Canadian Pipelines – comparable EBITDA		1,892	1,961	1,964
Depreciation and amortization2		(715)	(711)	(704)
Canadian Pipelines – comparable EBIT		1,177	1,250	1,260
U.S. and International (in US$)
ANR		254	306	309
GTN3		112	131	171
Great Lakes4		62	101	109
TC PipeLines, LP1,5		74	85	81
Other U.S. pipelines (Iroquois1, Bison6, Portland7)		111	111	61
International (Gas Pacifico/INNERGY1, Guadalajara8, Tamazunchale, TransGas1)		112	77	42
General, administrative and support costs9		(8)	(9)	(31)
Non-controlling interests10		161	173	144
U.S. Pipelines and International – comparable EBITDA		878	975	886
Depreciation and amortization2		(218)	(214)	(203)
U.S. Pipelines and International – comparable EBIT		660	761	683
Foreign exchange		-	(7)	22
U.S. Pipelines and International – comparable EBIT (Cdn$)		660	754	705
Business Development comparable EBITDA and EBIT		(29)	(52)	(62)
Natural Gas Pipelines – comparable EBIT		1,808	1,952	1,903
Summary
Natural Gas Pipelines – comparable EBITDA		2,741	2,875	2,816
Depreciation and amortization2		(933)	(923)	(913)
Natural Gas Pipelines – comparable EBIT		1,808	1,952	1,903
Specific items:
	Valuation provision for MGP11	-	-	(146)
Natural Gas Pipelines – EBIT		1,808	1,952	1,757

1

Results from TQM, Northern Border, Iroquois, TransGas and Gas Pacifico/INNERGY reflect our share of equity income from these investments.

2

Does not include depreciation and amortization from equity investments as these are already reflected in equity income.

3

Reflects our direct ownership interest of 75 per cent starting in May 2011 and 100 per cent prior to that date.

4

Represents our 53.6 per cent direct ownership interest. The remaining 46.4 percent is held by TC PipeLines, LP.

5

Our ownership interest in TC PipeLines, LP went from 38.2 per cent to 33.3 per cent starting in May 2011. The TC PipeLines, LP results include our effective ownership since May 2011 of 8.3 per cent of both GTN and Bison.

6

Reflects our direct ownership of 75 per cent of Bison starting in May 2011 when 25 per cent was sold to TC PipeLines, LP, and 100 per cent since January 2011 when Bison was placed in service.

7

Represents our 61.7 per cent ownership interest.

8

Included as of June 2011.

9

General, administrative and support costs associated with some of our pipelines, including $17 million for the start up of Keystone in 2010.

10

Comparable EBITDA for the portions of TC PipeLines, LP and Portland we do not own.

11

We recorded a valuation provision of $146 million in 2010 for our advances to the APG for MGP.

2012 Management's discussion and analysis -- 21

Canadian Pipelines
Comparable EBITDA and net income for our rate-regulated Canadian Pipelines are affected by our ROE, our investment base, the level of deemed common equity and incentive earnings. Changes in depreciation, financial charges and taxes also impact comparable EBITDA but do not impact net income as they are recovered in revenue on a flow-through basis.

Net income for the Canadian Mainline this year was $59 million lower than 2011 because there was no incentive earnings mechanism in place in 2012 and the average investment base was lower as annual depreciation outpaced our capital investment. Despite higher incentive earnings, 2011 net income was $21 million lower than 2010 because ROE was higher in 2010 (8.08 per cent in 2011 compared to 8.52 per cent in 2010), and the average investment base was also lower in 2011.

Net income for the Alberta System was $8 million higher than 2011 because of a growing investment base, as new natural gas supply in northeastern B.C. and western Alberta was developed and connected to the Alberta System. This was partially offset by lower incentive earnings. Net income in 2011 was $2 million higher than 2010, mainly due to a growing investment base.

Comparable EBITDA and EBIT for the Canadian pipelines reflect the net income variances discussed above as well as variances in depreciation, financial charges and income taxes which are recovered in revenue on a flow-through basis and, therefore, do not impact net income.

Net income Year ended December 31 (millions of $)	Average investment base Year ended December 31 (millions of $)

U.S. Pipelines and International
EBITDA for our U.S. operations is affected by contracted volume levels, volumes delivered and the rates charged, as well as by the cost of providing services, including OM&A and other costs, and property taxes.

ANR is also affected by the contracting and pricing of its storage capacity and incidental commodity sales. ANR's pipeline and storage volumes and revenues are generally higher in the winter months because of the seasonal nature of its business.

Comparable EBITDA for the U.S. and international pipelines was US$878 million in 2012, or US$97 million lower than 2011. This reflects the net effect of:

•

lower revenue at Great Lakes because of lower rates and uncontracted capacity

•

lower transportation and storage revenues at ANR, along with lower incidental commodity sales

•

higher OM&A and other costs at ANR

•

incremental earnings from the Guadalajara pipeline which started operations in June 2011.

22 -- TransCanada Corporation

Comparable EBITDA for U.S. and international pipelines was $975 million in 2011 which was $89 million higher than 2010. This was due to the net effect of:

•

Bison starting operations in January 2011

•

Guadalajara starting operations in June 2011

•

lower general, administrative support costs in 2011

•

lower revenues at Great Lakes and GTN in 2011.

Depreciation and amortization
Depreciation and amortization was $10 million higher in 2012 than in 2011, and was $10 million higher in 2011 than in 2010, mainly because Bison began operations in January 2011 and Guadalajara began operations in June 2011.

Business development
Business development expenses in 2012 were $23 million lower than last year because of lower expenses associated with the Alaska Pipeline Project. Expenses were $10 million lower in 2011 compared to 2010 mainly because the State of Alaska increased its business development reimbursement from 50 per cent to 90 per cent as of July 31, 2010.

OUTLOOK

Canadian Pipelines

Earnings
Earnings are affected most significantly by changes in investment base, ROE and capital structure, and also by the terms of toll settlements or other toll proposals approved by the NEB.

Until we receive the NEB's decision with respect to the Canadian Restructuring Proposal, earnings from the Canadian Mainline will continue to reflect the last approved ROE of 8.08 per cent on deemed common equity of 40 per cent, and will exclude the opportunity for incentive earnings that have enhanced Canadian Mainline's earnings in recent years as no incentive arrangement is currently in place. If the 2012 and 2013 tolls are approved as filed, earnings in 2013 will reflect a higher ROE equivalent to an ROE of 12 per cent on deemed common equity of 40 per cent for 2012 and 2013.

We expect the Alberta System's investment base to continue to grow as new natural gas supply in northeastern B.C. and western Alberta continues to be developed and is connected to it. We expect the growing investment base to have a positive impact on earnings in 2013.

We also anticipate a modest level of investment in our other Canadian rate-regulated natural gas pipelines, but expect the average investment bases of these pipelines to continue to decline as annual depreciation outpaces capital investment, reducing their year-over-year earnings.

Under the current regulatory model, earnings from Canadian rate-regulated natural gas pipelines are not affected by short-term fluctuations in the commodity price of natural gas, changes in throughput volumes or changes in contracted capacity levels.

U.S. Pipelines

Earnings
Earnings are affected by the level of contracted capacity and the rates charged to customers. Our ability to recontract or sell capacity at favourable rates is influenced by prevailing market conditions and competitive factors, including alternatives available to end use customers in the form of competing natural gas pipelines and supply sources, in addition to broader macroeconomic conditions that might impact demand from certain customers or market segments. Currently, the North American natural gas market is characterized by low natural gas prices and low values for storage and transportation services, which we expect to have a negative impact on U.S. Pipelines revenue in 2013.

2012 Management's discussion and analysis -- 23

Earnings are also affected by the level of OM&A and other costs, which includes the impact of safety, environmental and other regulators decisions.

Mexico Pipelines
2013 earnings are expected to be consistent with 2012 due to the nature of the long-term contracts applicable to our Mexican pipeline systems.

Capital expenditures
We spent a total of $1.4 billion in 2012 for our natural gas pipelines in Canada, the U.S. and Mexico, and expect to spend $1.9 billion in 2013 primarily on Alberta System expansion projects, the Tamazunchale Pipeline Extension, the Topolobampo and Mazatlan pipelines in Mexico, and maintenance projects on our natural gas pipelines. We fund capital expenditures through existing cash flows and access to capital markets. See page 65 for further discussion on liquidity risk.

UNDERSTANDING THE NATURAL GAS PIPELINES BUSINESS
Natural gas pipelines move natural gas from major sources of supply to locations or markets that use natural gas to meet their energy needs.

Our natural gas pipeline business builds, owns and operates a network of natural gas pipelines in North America that connects locations where gas is produced or interconnects with other pipelines connected to end customers such as local distribution companies, power generation facilities and other users. The network includes meter stations that record how much natural gas comes on the network and how much comes off at the delivery locations, compressor stations that act like pumps to move the large volumes of natural gas along the pipeline, and the pipelines themselves that transport natural gas under high pressure.

Regulation, tolls and cost recovery
We are regulated in Canada by the NEB, in the U.S. by the FERC and in Mexico by the Comisión Reguladora de Energía or Energy Regulatory Commission (CRE). The regulators approve construction of new pipeline facilities and ongoing operations of the infrastructure.

Regulators in Canada, the U.S. and Mexico allow recovery of costs to operate the network by collecting tolls, or payments, for services. These costs include OM&A costs, income and property taxes, interest on debt, depreciation expense to recover invested capital, and a return on the capital invested. The regulator reviews our costs to ensure they are prudent, and approves the tolls based on recovering these costs.

Within their respective jurisdictions, the FERC and CRE approve maximum transportation rates. These rates are cost based and are designed to recover the pipeline's investment, operating expenses and a reasonable return for investors. The pipeline may negotiate these rates with shippers.

Sometimes we and our shippers enter into agreements, or settlements, for tolls and cost recovery, which may include mutually beneficial performance incentives. The regulator must approve a settlement for it to be put into effect.

Generally, the Canadian natural gas pipelines request the NEB to approve the pipeline's cost of service and tolls once a year, and recover the variance between actual and expected revenues and costs in future years. The FERC does not require U.S. interstate pipelines to calculate rates annually, nor do they allow for the collection of the variance between actual and expected revenue and costs into future years. This difference in U.S. regulation puts our U.S. pipelines at risk for the difference in expected and actual costs and revenues between rate cases. If revenues no longer provide a reasonable opportunity to recover costs, we can file with the FERC for a new determination of rates, subject to any moratorium in effect. Similarly, the FERC may institute proceedings to lower tolls if they consider returns to be too high. Our Mexico pipelines are also regulated and have approved tariffs, services and related rates. However, the contracts underpinning the facilities in Mexico are long-term negotiated rate contracts and not subject to further regulatory approval.

24 -- TransCanada Corporation

Business environment and strategic priorities
In this section, we discuss the environment in which we conduct our natural gas pipelines business, including our strategic priorities for our natural gas pipelines business.

The North American natural gas pipeline network has been developed to connect supply to market. Use and growth of this infrastructure is affected by changes in the location and relative cost of natural gas supplies and changing demand.

We have a significant pipeline footprint in the WCSB and transport approximately 70 per cent of its production to markets within and outside of Alberta. Our pipelines also source natural gas, to a less significant degree, from the other major basins including the Appalachian, Rockies, Williston, Haynesville, Fayetteville, and Gulf of Mexico.

Increasing supply
The WCSB spans almost all of Alberta and extends into B.C., Saskatchewan, Yukon and Northwest Territories and is Canada's primary source of natural gas. The WCSB is currently estimated to have 125 trillion cubic feet of remaining conventional resources and a technically accessible unconventional resource base of almost 200 trillion cubic feet. The total WCSB resource base has more than doubled in the recent past with the advent of technology that can economically access unconventional gas plays in the basin. We expect production from the WCSB to decrease slightly in 2013 and then grow over the next decade.

The Montney and Horn River shale play formations in northeastern B.C. are also part of the WCSB and have recently become a significant source of natural gas. We expect production from these sources, currently 1.5 Bcf/d, to grow to approximately 5 Bcf/d by 2020, depending on natural gas prices and the economics of exploration and production.

2012 Management's discussion and analysis -- 25

The primary sources of natural gas in the U.S. are the U.S. shale plays, Gulf of Mexico and the Rockies. The U.S. shales are the biggest area of growth which we estimate will meet almost 50 per cent of the overall North American gas supply by 2020. Of the shale plays in the U.S, the Marcellus, Haynesville, Barnett, Eagle Ford and Fayetteville shale plays are the major supply sources.

The supply of natural gas in North America is forecast to increase significantly over the next decade (by approximately 15 Bcf/d by 2020), and is expected to continue to increase over the long term for several reasons:

•

New technology, such as horizontal drilling in combination with multi-stage hydraulic fracturing or fracking, is allowing companies to access unconventional resources economically. This is increasing the technically accessible resource base of existing basins and opening up new producing regions, such as the Marcellus and Utica shale in the U.S. northeast, and the Montney and Horn River shale areas in northeastern B.C.

•

These new technologies are also being applied to existing oil fields where further recovery of the resource is now possible. High oil prices, particularly compared to North American natural gas prices, has resulted in an increase in exploration and production of liquid-rich hydrocarbon basins. There is often associated gas in these plays (for example, the Bakken oil fields) which increases the overall gas supply for North America.

The development of shale gas basins that are located close to traditional existing markets, particularly in the U.S., has led to an increase in the number of supply choices and is changing traditional gas pipeline flow patterns. On some of our pipelines, such as the Canadian Mainline, ANR, and Great Lakes, there has been a reduction in long-haul, long-term firm contracted capacity and a shift to shorter-distance, shorter-term contracts.

While the increase in supply, particularly in northeastern B.C., has created opportunities for us to build new pipeline infrastructure to move the natural gas to markets, the development of alternative supply sources in the U.S., and particularly in the U.S. northeast, has caused pipelines that have traditionally served markets in this area (including ours), to reconfigure their flow patterns from continental routes to more regional ones.

Changing demand
The growing supply of natural gas has resulted in relatively low natural gas prices in North America, which have supported increasing demand and is expected to continue. Examples include:

•

the use of natural gas in the development of the Alberta oil sands

•

increased natural gas-fired power generation driven by conversion from coal

•

industrial growth in both Canada and the U.S.

•

increased exports to Mexico to fuel new power generation facilities

•

increased use of natural gas used in petrochemical and industrial facilities in both Canada and the U.S.

Natural gas producers are also looking to sell natural gas to global markets, which would involve connecting natural gas supplies to new LNG export terminals proposed primarily along the west coast of B.C., and on the U.S. Gulf of Mexico coast. Assuming the receipt of all necessary regulatory and other approvals, these facilities are expected to become operational in the second half of this decade. The addition of these new markets creates opportunities for us to build new pipeline infrastructure and to increase throughput on our existing pipelines.

More competition
Changes in supply and demand have resulted in growing pipeline infrastructure and increased competition for transportation services throughout North America. More pipeline capacity was added to the continental pipeline network between 2008 and 2011 than in any comparable time period in industry history, and gas supply areas that were once constrained, like the U.S. Rockies and east Texas, now have several paths to reach markets.

Strategic priorities
We are focused on capturing opportunities resulting from growing natural gas supply, as well as opportunities to connect new markets, while satisfying increasing demand for natural gas within existing markets.

26 -- TransCanada Corporation

We are also focused on adapting our existing assets to the changing gas flow dynamics.

The Canadian Mainline has traditionally sourced its natural gas primarily from the WCSB and delivered it to eastern markets. New supply located closer to the eastern markets has reduced demand for gas from the WCSB that, in turn, has reduced revenues from long haul transportation. As a result, overall tolls on the Mainline have increased and caused a reduction in the Canadian Mainline's competitive position. We are looking for opportunities to increase its market share in Canadian domestic markets, however, we expect to continue to face competition for both the eastern Canada and U.S. northeast markets. Our current application with the NEB seeks to restructure tolls on the Canadian Mainline to correspond with pipeline flow and usage patterns resulting from new supply and demand dynamics. The hearing on our application concluded in December 2012 and a decision is expected in late first quarter or early second quarter of 2013.

The Alberta System is the major natural gas gathering and transportation system for the WCSB, connecting most of the natural gas production in Western Canada to domestic and export markets. It faces competition for connection to supply, particularly in northeastern B.C., where the largest new source of natural gas has access to two existing competing pipelines. Connections to new supply and new or growing demand supports new capital expansions of the Alberta System. We expect supply in the WCSB to grow from its current level of approximately 14 Bcf/d to approximately 17 Bcf/d by 2020. The WCSB has an enormous remaining supply potential, but how much is produced, and how quickly, will be influenced by many factors, including transportation costs, the extent of the demand and local market price and basin-on-basin price differentials.

ANR has a very broad geographical footprint, with diverse market and supply access that includes 250 Bcf of natural gas storage, which is a major driver of ANR's revenues. ANR's supply of natural gas comes from many sources including the Gulf of Mexico, Mid-Continent, Rockies, Marcellus/Utica and the WCSB. Demand served by this pipeline includes markets in Michigan, Wisconsin, Illinois, Indiana and Ohio. Many of ANR's supply and market regions are also served by competing interstate and intrastate natural gas pipelines.

ANR has demonstrated its adaptability to changing market dynamics by identifying opportunities and investing in its system to accommodate the market's demands for services that are counter to traditional flow patterns. This has resulted in increased bi-directional flows and shorter haul services in some of its supply and market areas. Although the unseasonably warm winter weather and lack of storage demand negatively impacted ANR in 2012, we expect an increased demand for pipeline transportation broadly in the U.S. resulting in a positive impact to ANR because of the following factors:

•

a return to average weather conditions

•

the increase in gas-fired power generation due to coal switching to gas and coal plant retirements

•

LNG exports from the Gulf of Mexico and growth in the industrial sector such as petrochemicals.

GTN is supplied with natural gas from the WCSB and the Rockies. It competes with other interstate pipelines providing natural gas transportation services to markets in the U.S. Pacific Northwest, California and Nevada. These markets also have access to supplies from natural gas basins in the Rocky Mountains and the U.S. Southwest. GTN has significant long term contracts and is currently operating under a rate settlement which started in January 2012 and expires at the end of December 2015. As a result, GTN's revenues are subject to variation primarily as a result of capacity sold above its current contracted amount.

Great Lakes competes for natural gas transportation customers with pipelines that transport gas from the WCSB and natural gas sourced in the U.S. Great Lakes has experienced significant non-renewals of its long haul capacity in the past few years and its contracts are for shorter terms than in the past. Great Lakes revenues were also negatively impacted in 2012 by a warm winter and historically high storage levels that decreased its throughput. Demand for Great Lakes capacity changes with seasonal market conditions and we expect a return to average winter weather will increase throughput due to storage demand. Great Lakes is required to file a rate case no later than November 1, 2013, and this provides the opportunity for rate and tariff changes in response to current market conditions.

2012 Management's discussion and analysis -- 27

We are continually assessing our existing natural gas pipelines assets, and have reviewed the possibility of converting existing infrastructure from gas service to crude oil. We received NEB approval in 2007 to convert one of our Canadian Mainline gas pipelines to crude oil service for the original Keystone project. We have determined that a further conversion of portions of the Canadian Mainline from natural gas to crude oil to serve eastern markets is both technically and economically feasible. The oil pipeline group is assessing the commercial interest in such a conversion.

We are also focused on capturing new opportunities resulting from the changing supply and demand dynamics. In 2012, we undertook the following new projects:

•

we completed and placed in service approximately $650 million in pipeline projects to expand the Alberta System.

•

we reached an agreement with Shell to build and operate the proposed $4 billion Coastal GasLink pipeline to move WCSB gas to Shell Canada Limited's proposed west coast LNG project near Kitimat, B.C.

•

we were awarded $1.9 billion for new pipeline infrastructure projects to meet the growing demand for natural gas in Mexico

•

we proposed a $1.0 billion to $1.5 billion expansion to the Alberta System in northeast B.C. to connect to both the Prince Rupert Gas Transmission Project and to additional North Montney supplies.

In January 2013, we were selected by Progress Energy Canada Ltd, to design, build, own and operate the proposed $5 billion Prince Rupert Gas Transmission Project that will transport natural gas from northeastern B.C. to the proposed Pacific Northwest LNG export facility near Prince Rupert, B.C.

SIGNIFICANT EVENTS

Canadian Pipelines

Alberta System
This year we completed and placed in service approximately $650 million in pipeline projects to expand the Alberta System. This included completing the Horn River project in May, which extended the Alberta System into the Horn River shale play in B.C.

In 2012, the NEB approved approximately $640 million in additional expansions, including the Leismer-Kettle River Crossover project, a 30-inch, 77 km (46 mile) pipeline. This project will cost an estimated $160 million and is intended to increase capacity to meet demand in northeastern Alberta. As of December 31, approximately $330 million in additional projects were awaiting approval, including the $100 million Chinchaga Expansion and the $230 million Komie North project that would extend the Alberta System further into the Horn River area. On January 30, 2013, the NEB issued its recommendation to the Governor-in-Council that the proposed Chinchaga Expansion component of that project be approved, but denied the proposed Komie North Extension component. All applications awaiting approval as of the end of 2012 have now been addressed.

Canadian Mainline
An NEB hearing began in June 2012 to address our application to change the business structure and the terms and conditions of service for the Canadian Mainline, including tolls for 2012 and 2013. The hearing concluded in December 2012 and a decision is not expected until late first quarter or early second quarter 2013.

We received NEB approval in May to build new pipeline facilities to provide Southern Ontario with additional natural gas supply from the Marcellus shale basin. Supply began moving on November 1, 2012.

28 -- TransCanada Corporation

In response to requests to bring additional Marcellus shale gas into Canada, we held an additional open season for firm transportation service on the Canadian Mainline that ended in May 2012. We were able to accommodate an additional 50 MMcf/d from the Niagara meter station to Kirkwall effective November 1, 2012 with the potential for an additional 350 MMcf/d of incremental volumes for November 1, 2015 subject to finalizing precedent agreements with the interested parties.

Projects

Coastal GasLink
We were selected in June by Shell and its partners to design, build, own and operate the proposed Coastal GasLink project. The estimated $4 billion pipeline will transport natural gas from the Montney gas-producing region near Dawson Creek, B.C. to LNG Canada's recently announced LNG export facility near Kitimat, B.C. The LNG Canada project is a joint venture led by Shell, with partners Korea Gas Corporation, Mitsubishi Corporation and PetroChina Company Limited. The approximate 650 km (404 mile) pipeline is expected to have an initial capacity of more than 1.7 Bcf/d and be placed in service toward the end of the decade, subject to a final investment decision to be made by LNG Canada subsequent to obtaining final regulatory approvals.

Prince Rupert Gas Transmission Project
We have been selected by Progress Energy Canada Ltd (Progress), to design, build, own and operate the proposed $5 billion Prince Rupert Gas Transmission Project. This proposed pipeline will transport natural gas primarily from the North Montney gas-producing region near Fort St John, B.C., to the proposed Pacific Northwest LNG export facility near Prince Rupert, B.C. We expect to finalize definitive agreements with Progress in early 2013 leading to an in-service date in late 2018. A final investment decision to construct the project is expected to be made by Progress following final regulatory approvals.

Alberta System expansion projects
We continue to advance pipeline development projects in B.C. and Alberta to transport new natural gas supply. We have filed applications with the NEB to expand the Alberta System to accommodate requests for additional natural gas transmission service throughout the northwest and northeast portions of the WCSB. In addition, we propose to further extend the Alberta System in northeast B.C. to connect both to the Prince Rupert Gas Transmission Project and to additional North Montney gas supplies. This new infrastructure will allow the Pacific Northwest LNG export facility, located on the west coast of B.C., to access both the North Montney supplies as well as other WCSB gas supply. Initial capital cost estimates are approximately $1 billion to $1.5 billion, with an initial in-service date targeted for the end of 2015. We have incremental firm commitments to transport approximately 3.4 Bcf/d from western Alberta and northeastern B.C. by 2015.

Tamazunchale Pipeline Extension Project
In February 2012, we signed a contract with Mexico's Comisión Federal de Electricidad (CFE) for the approximately $500 million Tamazunchale Pipeline Extension Project. The project, which is supported by a 25-year contract with CFE, is a 235 km (146 mile) 30 inch pipeline with a capacity of 630 MMcf/d. Engineering, procurement and construction contracts have all been signed and construction related activities have begun. We expect the pipeline to be in service in the first quarter of 2014.

Topolobampo Pipeline Project
In November, CFE also awarded us the Topolobampo pipeline, from Chihuahua to Topolobampo, Mexico. The project, which is supported by a 25 year contract with CFE, is a 530 km (329 mile) 30 inch pipeline with a capacity of 670 MMcf/d. We estimate total costs to be US$1 billion, and expect it to be in service in mid-2016.

Mazatlan Pipeline Project
In November, CFE also awarded us the Mazatlan pipeline, from El Oro to Mazatlan, Mexico. The project, which is also supported by a 25 year contract with CFE and interconnects with the Topolobampo project, is a 413 km (257 mile) 24 inch pipeline with a capacity of 200 MMcf/d. We estimate total costs to be US$400 million, and expect it to be in service in fourth quarter 2016.

2012 Management's discussion and analysis -- 29

Alaska Pipeline Project
We and the Alaska North Slope producers have agreed on a work plan to evaluate options to commercialize North Slope natural gas resources through an LNG option. We received approval in May from the State of Alaska to suspend and preserve our activities on the Alaska/Alberta route and focus on the LNG alternative, which allowed us to defer our obligation to file for a FERC certificate for the Alberta route beyond fall 2012 (our original deadline). In September 2012, we solicited interest in a natural gas pipeline as part of the LNG option and there were a number of non-binding expressions of interest from potential shippers from a broad range of industry sectors in North America and Asia.

Regulatory filings

Canadian Pipelines
We filed a comprehensive restructuring proposal with the NEB in September 2011 for the Canadian Mainline. The proposal is intended to enhance the competitiveness of the Canadian Mainline and transportation from the WCSB, and includes a request for 2012 and 2013 tolls that align with the proposed changes to our business structure and the terms and conditions of service on the Canadian Mainline.

The NEB established interim tolls for 2012 based on the approved 2011 final tolls. We do not expect a decision on the Canadian Restructuring Proposal until late first quarter or early second quarter  2013.

The current settlements for the Alberta and Foothills systems expired at the end of 2012. Final tolls for 2013 will be determined through either new settlements or rate cases and any orders resulting from the NEB's decision on the Canadian Restructuring Proposal.

U.S. Pipelines
ANR Pipeline Company rates were established at the beginning of 1997. ANR can, but is not required to, file for new rates. The FERC issued orders in 2012 approving ANR's sale of its offshore assets to a newly created wholly owned subsidiary, TC Offshore LLC, allowing TC Offshore LLC to operate these assets as a stand-alone interstate pipeline. TC Offshore LLC began commercial operations on November 1, 2012. ANR Storage Company secured a settlement with its shippers that the FERC approved on August 20, 2012. ANR Storage Company owns 56 Bcf of the total ANR storage capacity.

GTN has a FERC-approved settlement agreement for transportation rates that is effective from January 2012 to the end of December 2015. The GTN settlement includes a moratorium on the filing of future rate proceedings until December 2015. GTN is required to file for new rates to go into effect January 1, 2016.

Northern Border secured a final settlement agreement with its shippers that the FERC approved with an effective date of January 1, 2013. The settlement rates for long-haul transportation are approximately 11 per cent lower than 2012 rates and depreciation was lowered from 2.4 to 2.2 per cent. The settlement also includes a three-year moratorium on filing cases or challenging the settlement rates but Northern Border must initiate another rate proceeding within five years.

Great Lakes has a FERC-approved settlement agreement in place. It can file for new rates at any time, but must file no later than November 1, 2013.

BUSINESS RISKS
The following are risks specific to our natural gas pipelines business. See page 71 for information about general risks that affect the company as a whole.

WCSB supply for downstream connecting pipelines
Although we have diversified our sources of natural gas supply, many of our North American natural gas pipelines and transmission infrastructure assets depend on supply from the WCSB. There is competition for this supply from several downstream pipelines, demand within Alberta, and in the future, demand for proposed pipelines for LNG exports from the west coast of B.C. The WCSB has considerable reserves, but how

30 -- TransCanada Corporation

much of it is actually produced will depend on many variables, including the price of gas, basin-on-basin competition, downstream pipeline tolls, demand within Alberta and the overall value of the reserves, including liquids content.

Market access to other supply
We compete for market share with other natural gas pipelines. New supply areas being developed closer to traditional markets have reduced the competitiveness of our long haul pipelines, and may continue to do so. The long-term competitiveness of our pipeline systems will depend on our ability to adapt to changing flow patterns by offering alternative transportation services at prices that are acceptable to the market.

Competition
We face competition from other pipeline companies seeking to connect similar supply and/or access to market. Most, if not all, long haul natural gas pipelines in North America are affected by the fundamental changes in flow dynamics resulting from new shale supply developments. The future success of new projects, such as connecting pipelines to LNG export facilities or development of Mexico gas pipeline infrastructure, is anticipated to be highly competitive.

Demand for pipeline capacity
Demand for a pipeline's capacity is ultimately the key driver that enables transportation services to be sold. Demand for pipeline capacity is created by supply and market competition, variations in economic activity, weather variability, natural gas pipeline and storage competition and pricing of alternative fuels. Demand and supply in new locations often creates opportunities for new infrastructure, but it may also change flow patterns and potentially impact the utilization of existing assets. For example, the proposed LNG facilities on the west coast of B.C. have the potential to reduce demand for capacity on pipelines that transport WCSB supply to other markets. Our natural gas pipelines may be challenged to sell available transportation capacity as transportation contracts expire on our existing pipeline assets, as they have, for example, on the Great Lakes system. We expect our U.S. natural gas pipelines to become more exposed to the potential for revenue variability due to rapidly evolving supply dynamics, competition and trends toward shorter-term contracting by shippers.

Several factors influence demand for pipeline capacity:

•

the price of natural gas is a key driver for development and exploration of the resource. The current low gas prices in North America may slow drilling activities which in turn diminishes production levels, particularly in dry gas fields where the extra revenue generated from the entrained liquids is not available.

•

large producers often diversify their portfolios by developing several basins, but this is influenced by actual costs to develop the resource as well as economic access to markets and cost of the necessary pipeline infrastructure. Basin-on-basin competition impacts the extent and timing of a resource play's development, which in turn drives changes in demand for pipeline capacity.

•

there is growing regulatory and public scrutiny over the environmental impacts of fracking. Changes in regulations that apply to fracking could impact the costs and pace of development of natural gas plays.

•

growing pipeline infrastructure, changes in supply sources, and unutilized capacity on many pipelines have led to a contraction of regional basis differentials (the differences in market prices paid for natural gas between different gas receipt and delivery points), which has led to changes in the way many pipeline systems are being used. As a result, many pipeline companies are moving to restructure their business models, rate designs and services to adapt to the changing flow dynamics.

2012 Management's discussion and analysis -- 31

Regulatory risk
Decisions by regulators can have an impact on the approval, construction, operation and financial performance of our natural gas pipelines. We manage these risks through rate and facility applications and negotiated settlements, where possible. Public opinion about natural gas pipeline development can also have an impact on the regulatory approval process for new gas pipeline assets. We continuously monitor regulatory developments and decisions to determine the possible impact on our gas pipelines business and work closely with our stakeholders in the development of the assets.

Operational
Keeping our pipelines operating is essential to the success of our business. Interruptions in our pipeline operations impact our throughput capacity and may result in reduced revenue. We manage this by investing in a highly skilled workforce, operating prudently, using risk-based preventive maintenance programs and making effective capital investments. We use internal inspection equipment to check our pipelines regularly, and repair or replace them whenever necessary. We also calibrate the meters regularly to ensure accuracy, and continuously maintain compression equipment to ensure safe and reliable operation.

32 -- TransCanada Corporation

Oil Pipelines

TransCanada's Keystone Pipeline System connects Alberta crude oil supplies to significant U.S. refining markets in Illinois and Oklahoma. The system has a nominal design capacity of 591,000 Bbl/d and is 3,467 km (2,154 miles) long.

Our plan for Keystone XL creates an opportunity for us to transport growing North American crude oil supplies to market. Keystone XL will increase the total capacity of the Keystone Pipeline System to approximately 1.4 million Bbl/d and we have secured long-term, firm contracts in excess of 1.1 million Bbl/d.

The current construction of the Gulf Coast Project will connect the crude oil hub at Cushing, Oklahoma to the U.S. Gulf Coast with an initial capacity of up to 700,000 Bbl/d.

We recently announced the Grand Rapids Pipeline and Northern Courier Pipeline and our expansion of the Keystone Hardisty Terminal. These projects are giving us a competitive position in the growing intra-Alberta crude oil transportation market.

Strategy at a glance
	With the increasing production of crude oil in Alberta, new crude oil discoveries in the U.S. and the growing demand for secure, reliable sources of energy, developing new crude oil pipeline capacity is essential.
	We continue to focus on contracting and delivering growing North American crude oil supply to key U.S. markets, and are planning to expand our oil pipeline infrastructure by:
	•  building a new crude oil pipeline from Cushing, Oklahoma to the U.S. Gulf Coast (the Gulf Coast Project)
	•  adding batch accumulation and pipeline infrastructure at Hardisty, Alberta (Keystone Hardisty Terminal)
	•  building a new crude oil pipeline from Hardisty, Alberta to Steele City, Nebraska (Keystone XL)
	•  building the Grand Rapids Pipeline to transport crude oil and diluent between the producing area in northern Alberta and the Edmonton/Heartland region and
	•  building the Northern Courier Pipeline to transport bitumen and diluent between the Fort Hills mine site and proposed Voyageur Upgrader, north of Fort McMurray, Alberta.
	Our proposed conversion of a portion of the Canadian Mainline from natural gas to crude oil service would connect the eastern Canadian refining market to our oil pipeline infrastructure (Canadian Mainline conversion) and also gives us additional opportunities to expand our oil pipelines business.

2012 Management's discussion and analysis -- 33

34 -- TransCanada Corporation

We are the operator of all of the following pipelines and properties.

		length	description	ownership
	Oil pipelines
22	Keystone Pipeline System	3,467 km (2,154 miles)	Transports crude oil from Hardisty, Alberta, to U.S. markets at Wood River and Patoka in Illinois, and to Cushing, Oklahoma	100%
	Under construction
23	Cushing Marketlink	Crude oil receipt facilities	To transport crude oil from the Permian Basin producing region in western Texas to the U.S. Gulf Coast refining market on facilities that form part of the Gulf Coast Project	100%
24	Gulf Coast Project	780 km (485 miles)	To transport crude oil from the hub at Cushing, Oklahoma to the U.S. Gulf Coast refinery market. Includes the 76 km (47 mile) Houston Lateral pipeline	100%
25	Keystone Hardisty Terminal	Crude oil terminal	Crude oil terminal to be located at Hardisty, Alberta, providing Western Canadian producers with new crude oil batch accumulation tankage and pipeline infrastructure and access to the Keystone Pipeline System	100%
	In development
26	Bakken Marketlink	Crude oil receipt facilities	To transport crude oil from the Williston Basin producing region in North Dakota and Montana to Cushing, Oklahoma on facilities that form part of Keystone XL	100%
*	Canadian Mainline Conversion		Conversion of a portion of the Canadian Mainline natural gas pipeline system to crude oil service, which will transport crude oil between Hardisty, Alberta and markets in eastern Canada	100%
27	Grand Rapids Pipeline	500 km (300 miles)	To transport crude oil between the producing area northwest of Fort McMurray and the Edmonton/Heartland market region. Project is a partnership with Phoenix Energy Holdings Limited (Phoenix)	50%
28	Keystone XL	1,897 km (1,179 miles)	Pipeline from Hardisty, Alberta to Steele City, Nebraska to expand capacity of the Keystone Pipeline System to 1.4 million Bbl/d. Awaiting U.S. Presidential Permit decision	100%
29	Northern Courier Pipeline	90 km (56 miles)	To transport bitumen and diluent between the Fort Hills mine site and the Voyageur Upgrader located north of Fort McMurray, Alberta.	100%

*

Not shown on map

2012 Management's discussion and analysis -- 35

RESULTS
Comparable EBITDA, comparable EBIT and EBIT are all non-GAAP measures. See page 14 for more information.

year ended December 31 (millions of $)	2012	20111
Keystone Pipeline System	712	589
Oil Pipeline Business Development	(14)	(2)
Oil Pipelines – comparable EBITDA	698	587
Depreciation and amortization	(145)	(130)
Oil Pipelines – comparable EBIT	553	457
Comparable EBIT denominated as follows
Canadian dollars	191	159
U.S. dollars	363	301
Foreign exchange	(1)	(3)
Oil Pipelines – comparable EBIT	553	457

1

Results in 2011 are for 11 months.

Comparable EBITDA
Comparable EBITDA for the Keystone Pipeline System was $123 million higher this year than in 2011. This increase reflected higher revenues primarily resulting from:

•

higher contracted volumes

•

the impact of higher final fixed tolls on committed pipeline capacity to Wood River and Patoka, in Illinois, which came into effect in May 2011

•

the impact of higher final fixed tolls on committed pipeline capacity to Cushing, Oklahoma, which came into effect in July 2012

•

twelve months of earnings being recorded in 2012 compared to eleven months in 2011.

The Keystone Pipeline System began commercial operations in June 2010, when we began delivering crude oil to Wood River and Patoka in Illinois. We capitalized all cash flows except general, administrative and support costs until February 2011. The NEB initially restricted the operating pressure on the Canadian conversion segment of the pipeline. As a result, we could not operate it at design pressure and throughput capacity was much lower than the initial nominal capacity of 435,000 Bbl/d. The NEB removed the restriction in December 2010 and we made operational modifications in late January 2011 which allowed us to operate at higher pressure and increase throughput capacity.

We began recording EBITDA for the Keystone Pipeline System in February 2011, when we began delivering crude oil to Cushing, Oklahoma.

36 -- TransCanada Corporation

Business development
Business development expenses this year were $12 million higher than 2011 mainly because of increased business development activity on various development projects.

Depreciation and amortization
Depreciation and amortization was $15 million higher this year than in 2011 because 12 months of depreciation was recorded in 2012 compared to 11 months in 2011.

OUTLOOK

Earnings
We expect 2013 earnings to be consistent with 2012. Earnings are expected to increase over time as projects currently in development are placed in service.

Capital expenditures
We spent a total of $1.1 billion in 2012, and expect to spend $4.1 billion in 2013, mainly related to Keystone XL and the Gulf Coast Project. We fund capital expenditures through existing cash flows and access to capital markets. See page 65 for further discussion on liquidity risk.

UNDERSTANDING THE OIL PIPELINES BUSINESS
Oil pipelines move crude oil from major sources of supply to refinery markets so the crude oil can be refined into various petroleum products.

Our Keystone Pipeline System connects Alberta crude oil supplies to significant U.S. refining markets in Illinois and Oklahoma. It generates earnings mainly by providing pipeline capacity to shippers on a take-or-pay basis in exchange for fixed monthly payments that are not linked to actual throughput volumes. Uncontracted capacity is offered to the market on a spot basis and, when capacity is available, provides opportunities to generate incremental earnings.

The terms of service and fixed monthly payments are determined by long-term transportation service arrangements negotiated with shippers. These arrangements average 18 years, and provide for the recovery of costs we incur to operate the system.

2012 Management's discussion and analysis -- 37

Business environment
Increasing crude oil supply production in Canada and the U.S. has increased the demand for new crude oil pipeline infrastructure and, as a result, we are pursuing opportunities to connect growing North American crude oil supplies to key markets.

Alberta produces the majority of the crude oil in the WCSB which is the primary source of crude oil supply for the Keystone Pipeline System.

In 2011, the WCSB produced an estimated 1.1 million Bbl/d of conventional crude oil and condensate, and 1.6 million Bbl/d of Alberta oil sands crude oil – a total of approximately 2.7 million Bbl/d. The production of conventional crude oil in western Canada grew for the first time after years of decline.

In its 2012 report, the Alberta Energy Resources Conservation Board estimates there are approximately 170 billion barrels of remaining established conventional and oil sands reserves in Alberta. In June 2012, the Canadian Association of Petroleum Producers forecasted WCSB crude oil supply would increase to 3.6 million Bbl/d by 2015 and to 4.5 million Bbl/d by 2020. Its 2012 forecast for western Canadian production of conventional and unconventional crude oil in 2025 is 885,000 Bbl/d higher than its forecast in 2011.

Oil sands production
Despite increases in production from conventional sources, and new shale oil production (including the Bakken and Cardium formations), the oil sands will continue to make up most of the crude oil production from the WCSB. The Alberta Energy Resources Conservation Board's 2012 report estimates that oil sands capital expenditures increased $2.7 billion in 2011, to $19.9 billion, and predicts that investment will be $21.5 billion in 2012 and $24.7 billion in 2015.

Oil sands projects have very long lives: conservative estimates are 40 years for mining sites and 25 years for in-situ production, and some estimates are considerably higher. That means producers need to secure

38 -- TransCanada Corporation

long-term connectivity to market. The Keystone Pipeline System, including Keystone XL, provides producers with needed pipeline capacity and is largely contracted for an average term of 18 years.

Demand for infrastructure within Alberta
Growth in oil sands production is also driving the need for new intra-Alberta pipelines, like our Grand Rapids Pipeline, that can move crude oil production from the source to market hubs at Edmonton/Heartland and Hardisty, where they can connect with the Keystone Pipeline System, and other pipelines that transport crude oil outside of Alberta, and move diluent from the Edmonton/Heartland region to the producing area in northern Alberta.

Growth in U.S. production
According to the International Energy Agency (IEA) World Energy Outlook report, the U.S. is set to overtake Saudi Arabia as the world's largest oil producer. The IEA projects approximately three million Bbl/d of U.S. shale oil production growth, peaking in approximately 2020 and starting to decline by around 2025.

The Williston Basin, located mainly in North Dakota and Montana, produced more than 600,000 Bbl/d in 2012, and production levels are expected to reach approximately one million Bbl/d by 2014 because of rapid growth in Bakken shale oil production. The Williston Basin is the primary source of crude oil supply for the Bakken Marketlink project.

According to BENTEK Energy, the Permian Basin, located mainly in western Texas, currently produces 1.3 million Bbl/d and will reach 1.8 million Bbl/d by the end of 2016. The Permian Basin is the primary source of crude oil for the Cushing Marketlink project.

Growing U.S. production has contributed to increased crude oil supply at the Cushing, Oklahoma market hub and resulted in increased demand for additional pipeline capacity between Cushing and the U.S. Gulf Coast refining market. Our Gulf Coast Project will provide needed pipeline capacity to transport growing crude oil supply at Cushing to the U.S. Gulf Coast.

Even with growth in U.S. crude oil production, the IEA report predicts the U.S. will remain a net importer of crude oil, importing 3.4 million Bbl/d into 2035. Growing production in the west Texas Permian and south Texas Eagle Ford basins, which is primarily light crude oil, is expected to compete with Williston Basin light crude oil production volumes but generally will not compete with Canadian volumes. Gulf Coast refiners will continue to prefer Canadian heavy oil because their refineries are mainly set up to run heavy crude oil and cannot easily switch to running the new light shale oil in large quantities.

Refineries in eastern Canada currently import light crude oil from west Africa and the Middle East, so are better able to handle light shale oil. Many of these refineries have recently begun transporting domestic light crude oil in small quantities by rail, at a cost typically higher than the cost to ship by pipeline. This has created a significant demand for pipelines to connect eastern Canada with growing Bakken and WCSB light crude oil production. We are positioned to meet this need by potentially converting portions of our Canadian Mainline natural gas pipeline system between Alberta and eastern Canada.

SIGNIFICANT EVENTS

Tolls
We filed revised fixed tolls with the NEB and the FERC this year for committed pipeline capacity to Cushing, Oklahoma. The new tolls went into effect on July 1, 2012, and represent the final project costs of the Keystone Pipeline System.

Gulf Coast Project
We announced in February 2012 that what had previously been the Cushing to U.S. Gulf Coast portion of the Keystone XL Pipeline has its own independent value to the marketplace, and that we plan to build it as the stand-alone Gulf Coast Project, which is not part of the Keystone XL Presidential Permit process.

2012 Management's discussion and analysis -- 39

The 36-inch pipeline will extend from Cushing, Oklahoma to the U.S. Gulf Coast. We expect it to have an initial capacity of up to 700,000 Bbl/d, and an ultimate capacity of 830,000 Bbl/d. We estimate the total cost of the project to be US$2.3 billion, and as of December 31, 2012, construction was approximately 35 per cent complete. US$300 million of the total cost is expected to be spent on the Houston Lateral pipeline, a 76 km (47 mile) pipeline that will transport crude oil to Houston refineries.

Construction began in August 2012 and we expect to place the pipeline in service at the end of 2013.

Keystone XL Pipeline
In May 2012, we filed a Presidential Permit application (cross-border permit) with the U.S. Department of State (DOS) for Keystone XL to transport crude oil from the U.S./Canada border in Montana to Steele City, Nebraska. We continued to work collaboratively with the Nebraska Department of Environmental Quality (NDEQ) and various other stakeholders throughout 2012 to determine an alternative route in Nebraska that would avoid the Nebraska Sandhills. We had proposed an alternative route to the NDEQ in April 2012, and then modified the route in response to comments from the NDEQ and other stakeholders.

In September 2012, we submitted a Supplemental Environmental Report to the NDEQ for the proposed re-route, and provided an environmental report to the DOS, required as part of the DOS review of our cross-border permit application.

In January 2013, the NDEQ issued its final evaluation report on our proposed re-route to the Governor of Nebraska. The report noted that the proposed re-route avoids the Nebraska Sandhills, and that construction and operation of Keystone XL is expected to have minimal environmental impacts in Nebraska. On January 22, 2013, the Governor of Nebraska approved our proposed re-route.

The DOS is now completing their environmental and National Interest Determination review process and we are awaiting their decision on our cross-border permit application.

The pipeline will extend from Hardisty, Alberta to Steele City, Nebraska. We estimate the total cost of the project to be US$5.3 billion and, as of December 31, 2012, had invested US$1.8 billion.

We expect the pipeline to be in service in late 2014 or early 2015, subject to regulatory approvals.

Marketlink Projects
We have commenced construction on the Cushing Marketlink receipt facilities and expect to begin transporting crude oil supply from the Permian Basin producing region in western Texas to the U.S. Gulf Coast in late 2013 after our Gulf Coast Project is placed in service. Our Bakken Marketlink project will transport crude oil supply from the Williston Basin producing region in North Dakota and Montana to Cushing, Oklahoma on facilities that form part of Keystone XL which remains subject to regulatory approval.

Keystone Hardisty Terminal
We announced in May 2012 that we had secured binding long-term commitments of more than 500,000 Bbl/d for the Keystone Hardisty Terminal, and are expanding the proposed two million barrel project to a 2.6 million barrel terminal at Hardisty, Alberta, due to strong commercial support.

The terminal will provide new crude oil batch accumulation tankage and pipeline infrastructure for western Canadian producers, and access to the Keystone Pipeline System.

We expect the terminal to be operational in late 2014 and cost approximately $275 million.

Northern Courier Pipeline
We announced in August 2012 that we had been selected by Fort Hills Energy Limited Partnership to design, build, own and operate the proposed Northern Courier Pipeline.

The 90 km (54 mile) pipeline system will transport bitumen and diluent between the Fort Hills mine site and the Voyageur Upgrader, north of Fort McMurray, Alberta. We estimate total capital costs to be $660 million.

40 -- TransCanada Corporation

The pipeline is fully subscribed under long-term contract to service the Fort Hills mine, which is jointly owned by Suncor Energy Inc, Total E&P Canada Ltd. and Teck Resources Limited.

The project is conditional on the Fort Hills project receiving sanctions by the owners of the Fort Hills mine and is subject to regulatory approval.

Grand Rapids Pipeline
We announced in October 2012 that we had entered into binding agreements with Phoenix to develop the Grand Rapids Pipeline in northern Alberta.

The project includes crude oil and diluent lines to transport volumes approximately 500 km (300 miles), between the producing area northwest of Fort McMurray and the Edmonton/Heartland region. It will have the capacity to move up to 900,000 Bbl/d of crude oil and 330,000 Bbl/d of diluent.

We and Phoenix will each own 50 per cent of the project and we will operate the system, which is expected to cost $3 billion. Phoenix has entered into a long-term commitment to ship crude oil and diluent.

The Grand Rapids Pipeline system, subject to regulatory approvals, is expected to be placed in service in multiple stages, with initial crude oil service by mid-2015 and the complete system in service by the second half of 2017.

Canadian Mainline conversion
We have determined that it is technically and economically feasible to convert a portion of the Canadian Mainline natural gas pipeline system to crude oil service. The proposed pipeline will deliver crude oil between Hardisty, Alberta and markets in eastern Canada through a combination of converted natural gas pipelines and new construction. We are actively pursuing this project and have begun soliciting input from stakeholders and prospective shippers to determine market acceptance.

BUSINESS RISKS
The following are risks specific to our oil pipelines business. See page 71 for information about general risks that affect the company as a whole, including other operational risks, health, safety and environment (HSE) risks, and financial risks.

Operational
Optimizing and maintaining availability of our oil pipeline is essential to the success of our oil pipelines business. Interruptions in our pipeline operations impact our throughput capacity and may result in reduced capacity payment revenues and spot volume opportunities. We manage this by investing in a highly skilled workforce, operating prudently, using risk-based preventive maintenance programs and making effective capital investments. We use internal inspection equipment to check our pipelines regularly and repair them whenever necessary.

Regulatory
Decisions by Canadian and U.S. regulators can have a significant impact on the approval, construction, operation and financial performance of our oil pipelines. Public opinion about crude oil development and production also has an impact on the regulatory process. There are some individuals and interest groups that are expressing their opposition to crude oil production by opposing the construction of oil pipelines. We manage this risk by continuously monitoring regulatory developments and decisions to determine their possible impact on our oil pipelines business and by working closely with our stakeholders in the development and operation of the assets.

Execution, capital costs and permitting
Investing in large infrastructure projects involves substantial capital commitments, based on the assumption that the new assets will offer an attractive return on investment in the future. Under some contracts, we share the cost of these risks with customers. While we carefully consider the expected cost of our capital projects,

2012 Management's discussion and analysis -- 41

under some contracts we bear capital cost risk which may impact our return on these projects. Our capital projects are also subject to permitting risk which may result in construction delays and potentially reduced investment returns.

Crude oil supply and demand for pipeline capacity
Demand for crude oil pipeline capacity is dependent on the level of crude oil supply and demand for refined crude oil products. New producing technologies such as steam assisted gravity drainage and horizontal drilling in combination with fracking are allowing producers to economically increase development of unconventional resources, such as oil sands and shale oil at current crude oil prices, and have resulted in increased demand for new crude oil pipeline infrastructure. A decrease in demand for refined crude oil products could adversely impact the price of oil producers receive for their product. Lower margins for crude oil could mean producers curtail their investment in the development of crude oil supplies. Depending on their severity, these factors would negatively impact the opportunities we have to expand our crude oil pipeline infrastructure and, in the longer term, contract with shippers as current agreements expire.

Competition
As we continue to develop a competitive position in the North American crude oil transportation market to transport growing WCSB, Williston Basin and Permian Basin crude oil supplies to key U.S. refining markets, we face competition from other pipeline companies and to a lesser extent, rail companies which also seek to transport these crude oil supplies to market. Our success is dependant on our ability to offer and contract transportation services on terms that are market competitive.

42 -- TransCanada Corporation

Energy

TransCanada's Energy business includes a portfolio of power generation assets in Canada and the U.S., and unregulated natural gas storage assets in Alberta.

We own, control or are developing more than 11,800 MW of generation capacity powered by natural gas, nuclear, coal, hydro, wind and solar assets. Our power business in Canada is mainly located in Alberta, Ontario and Québec. Our U.S. power business is located in New York, New England, and Arizona. The assets are largely supported by long-term contracts and some represent low-cost baseload generation, while others are critically located, essential capacity.

We conduct wholesale and retail electricity marketing and trading throughout North America from our offices in Alberta, Ontario and Massachusetts to actively manage our commodity exposure and provide higher returns.

We own or control approximately 156 Bcf of unregulated natural gas storage capacity in Alberta, accounting for approximately one-third of all storage capacity in the province. When combined with the regulated natural gas storage in Michigan (part of the Natural Gas Pipelines segment), we provide approximately 407 Bcf of natural gas storage and related services.

Strategy at a glance
We are focusing on low-cost, long-life electrical infrastructure and natural gas storage assets supported by strong market fundamentals, and the opportunity for long-term contracts with reputable and creditworthy counterparties. Our investment in natural gas, nuclear, wind, hydro-power and solar generating facilities demonstrates our commitment to clean, sustainable energy.

The growth in demand for power in North America is expected to provide the opportunity to participate in new generation and other power infrastructure projects. Current low natural gas prices make natural gas generation a very cost-competitive option to meet the growing demand in the markets we serve.

Natural gas storage will continue to serve market needs and will play an important role in balancing supply and demand as additional gas supplies are connected to North American and world markets.

            1    Includes facilities under development.

2012 Management's discussion and analysis -- 43

44 -- TransCanada Corporation

We are the operator of all of our Energy assets, except for the Sheerness, Sundance A and Sundance B PPAs, Cartier Wind, Bruce A and B and Portlands Energy.

	generating                       capacity (MW)		type of fuel	description	location	ownership
	Canadian Power 8,070 MW of power generation capacity (including facilities in development)
	Western Power 2,636 MW of power supply in Alberta and the western U.S.
30	Bear Creek	80	natural gas	Cogeneration plant	Grand Prairie, Alberta	100%
31	Cancarb	27	natural gas, waste heat	Facility fuelled by waste heat from an adjacent TransCanada facility that produces thermal carbon black, a by-product of natural gas	Medicine Hat, Alberta	100%
32	Carseland	80	natural gas	Cogeneration plant	Carseland, Alberta	100%
33	Coolidge1	575	natural gas	Simple-cycle peaking facility	Coolidge, Arizona	100%
34	Mackay River	165	natural gas	Cogeneration plant	Fort McMurray, Alberta	100%
35	Redwater	40	natural gas	Cogeneration plant	Redwater, Alberta	100%
36	Sheerness PPA	756	coal	PPA for entire output of facility	Hanna, Alberta	100%
37	Sundance A PPA	560	coal	PPA for entire output of facility	Wabamun, Alberta	100%
37	Sundance B PPA (Owned by ASTC Power Partnership2)	3533	coal	PPA for entire output of facility	Wabamun, Alberta	50%
	Eastern Power 2,950 MW of power generation capacity (including facilities in development)
38	Bécancour	550	natural gas	Cogeneration plant	Trois-Rivières, Québec	100%
39	Cartier Wind	3663	wind	Five wind power projects	Gaspésie, Québec	62%
40	Grandview	90	natural gas	Cogeneration plant	Saint John, New Brunswick	100%
41	Halton Hills	683	natural gas	Combined-cycle plant	Halton Hills, Ontario	100%
42	Portlands Energy	2753	natural gas	Combined-cycle plant	Toronto, Ontario	50%

2012 Management's discussion and analysis -- 45

	generating                  capacity (MW)		type of fuel	description	location	ownership
	Bruce Power 2,484 MW of power generation capacity through eight nuclear power units
43	Bruce A	1,4623	nuclear	Four operating reactors	Tiverton, Ontario	48.9%
43	Bruce B	1,0223	nuclear	Four operating reactors	Tiverton, Ontario	31.6%
	U.S. Power 3,755 MW of power generation capacity
44	Kibby Wind	132	wind	Wind farm	Kibby and Skinner Townships, Maine	100%
45	Ocean State Power	560	natural gas	Combined-cycle plant	Burrillville, Rhode Island	100%
46	Ravenswood	2,480	natural gas and oil	Multiple-unit generating facility using dual fuel-capable steam turbine, combined-cycle and combustion turbine technology	Queens, New York	100%
47	TC Hydro	583	hydro	13 hydroelectric facilities, including stations and associated dams and reservoirs	New Hampshire, Vermont and Massachusetts (on the Connecticut and Deerfield rivers)	100%
	Unregulated natural gas storage 118 Bcf of non-regulated natural gas storage capacity
48	CrossAlta	68 Bcf4		Underground facility connected to Alberta System	Crossfield, Alberta	100%
49	Edson	50 Bcf		Underground facility connected to Alberta System	Edson, Alberta	100%
	In development
50	Napanee	900	natural gas	Proposed combined-cycle plant	Greater Napanee, Ontario	100%
51	Ontario Solar	86	solar	Nine solar projects from Canadian Solar Solutions Inc. We expect to acquire the first two projects in the first half of 2013, and the remaining seven projects in 2013 to late 2014	Southern Ontario and New Liskeard, Ontario	100%

1

Located in Arizona, results reported in Canadian Power – Western Power.

2

We have a 50 per cent interest in ASTC Power Partnership, which has a PPA in place for 100 per cent of the production from the Sundance B power generating facilities.

3

Our share of power generation capacity.

4

Reflects the acquisition of an additional 27 Bcf of working gas storage capacity in December 2012.

46 -- TransCanada Corporation

RESULTS
Comparable EBITDA, and comparable EBIT are non-GAAP measures. See page 14 for more information.

year ended December 31 (millions of $)	2012	2011	2010
Canadian Power
Western Power1	335	483	212
Eastern Power2	345	297	212
Bruce Power	14	110	173
General, administrative and support costs	(48)	(43)	(38)
Canadian Power – comparable EBITDA3	646	847	559
Depreciation and amortization4	(152)	(141)	(114)
Canadian Power – comparable EBIT3	494	706	445
U.S. Power(US$)
Northeast Power5	257	314	335
General, administrative and support costs	(48)	(41)	(32)
U.S. Power – comparable EBITDA	209	273	303
Depreciation and amortization	(121)	(109)	(116)
U.S. Power – comparable EBIT	88	164	187
Foreign exchange	-	(4)	7
U.S. Power – comparable EBIT(Cdn$)	88	160	194
Natural Gas Storage
Alberta Storage	77	84	136
General, administrative and support costs	(10)	(6)	(8)
Natural Gas Storage – comparable EBITDA3	67	78	128
Depreciation and amortization4	(10)	(12)	(13)
Natural Gas Storage – comparable EBIT3	57	66	115
Business development comparable EBITDA and EBIT	(19)	(25)	(32)
Energy – comparable EBIT3	620	907	722
Summary
Energy – comparable EBITDA3	903	1,168	969
Depreciation and amortization4	(283)	(261)	(247)
Energy – comparable EBIT3	620	907	722

1

Includes Coolidge starting in May 2011.

2

Includes Cartier phase two of Gros-Morne starting in November 2012, phase one of Gros-Morne starting in November 2011 and Montagne- Sèche starting in November 2011; Halton Hills starting in September 2010.

3

Includes our share of equity income from our equity accounted for investments in ASTC Power Partnership, Portlands Energy, Bruce Power and CrossAlta up to December 18, 2012. On December 18, 2012, we acquired the remaining 40 per cent interest in CrossAlta, bringing our ownership interest to 100 per cent.

4

Does not include depreciation and amortization of equity investments.

5

Includes phase two of Kibby Wind starting in October 2010.

Comparable EBITDA for Energy was $903 million in 2012, or $265 million lower than 2011. This reflected the net effect of:

•

decreased Western Power earnings due to the Sundance A PPA force majeure

•

incremental earnings from Cartier Wind in Eastern Power and Coolidge in Western Power

•

lower equity income from Bruce Power due to increased planned outage days

•

decreased U.S. Power earnings because of lower realized power prices, higher load serving costs and reduced water flows at the TC Hydro facilities.

2012 Management's discussion and analysis -- 47

OUTLOOK

Earnings
We expect 2013 earnings from the Energy segment to be higher than 2012, mainly due to the following:

•

incremental earnings from Bruce A Units 1 and 2 and fewer planned outage days at Bruce A

•

a full year of operations from Gros-Morne which was placed in service in fourth quarter 2012

•

higher New York capacity prices as a result of the September 2012 FERC order affecting pricing rules for new entrants

•

the acquisition of several of the Ontario Solar assets beginning in early 2013

•

we acquired the remaining 40 per cent interests in CrossAlta in December 2012

•

the return to service of Sundance A in fall 2013

•

offset by higher outage days at Bruce B and higher pension and staff costs at Bruce A and B.

Although a significant portion of Energy's output is sold under long-term contracts, power that is sold under shorter-term forward arrangements or at spot prices will continue to be affected by fluctuations in commodity prices. Fluctuations in Alberta, New England and New York power prices will affect Energy's earnings in 2013, and winter/summer natural gas price spreads will affect earnings in Gas Storage. Timing of the return of the Sundance A units may also have an impact on Western Power's earnings in late 2013.

Weather, unplanned outages, regulatory changes and the overall stability of the energy industry may also affect earnings in 2013.

Western Power
Alberta power market fundamentals are strong and new power capacity and transmission projects are being developed to meet the significant growth in demand. Consumption has been growing since 2009, mirroring economic growth since the recession. The outlook for forward oil prices supports ongoing investment in the oil sands and the associated development is expected to underpin continuing economic growth and increased power demand. Average Alberta power demand in 2012 was almost three per cent higher than 2011. The Alberta Electric System Operator is forecasting that demand will continue to grow at a similar rate over the next 10 years, and estimates that about 6,000 MW of new generation will be required. We expect to participate in new generation additions and other power infrastructure projects to meet Alberta's growing demand. Despite this rising demand, average power prices in Alberta in 2012 ($64/MWh) were lower than 2011 ($77/MWh). Spot market power prices are a function of many factors, including supply/demand conditions and natural gas prices. The supply of power is for the most part dictated by the performance of the coal fleet and wind availability, while power demand is highly influenced by the weather and seasonal factors. Natural gas prices, which at times were below $2/GJ, contributed to the low power prices, especially in offpeak and windy onpeak periods. The return of the Sundance A units in late 2013, the addition of a power transmission line to Montana in 2013 and a large combined cycle plant under construction for 2015 could have a negative effect on Alberta power prices in the near and medium term.

Eastern Power

Our existing energy assets in Ontario are largely insulated from changes in the market price of power through contracts with the Ontario Power Authority (OPA). The Ontario Independent Electricity System Operator forecasts growth in the demand for power will be flat in 2013 as conservation programs and time of use pricing temper demand. Ontario's remaining coal power stations will be retired by the end of 2013. Within the next decade, Ontario's aging nuclear units will require significant investments to extend their lives or will otherwise face retirement, which may provide development opportunities for us in the future.

U.S. Power
In New England, average power demand fell one per cent this year partly due to warm winter weather and there was a net increase of 240 MW of power supply (approximately 400 MW of new power supply was added and 160 MW retired). These supply/demand conditions, combined with low natural gas prices, resulted in a reduction in the average New England ISO power price to US$36/MWh in 2012 from US$47/MWh in

48 -- TransCanada Corporation

2011. The New England ISO forecasts growth in the demand for power of about one per cent per year in the coming years, based on modest economic growth.

Average power demand in New York fell one per cent in 2012 because of the economic situation, warm winter weather and the loss of demand associated with Superstorm Sandy. There was also a net reduction of 100 MW in power supply (approximately 500 MW of new power supply was added and 600 MW was retired). This supply/demand environment, combined with low natural gas prices, reduced the average New York ISO power price for New York City to US$39/MWh in 2012, from about US$51/MWh in 2011. The New York ISO forecasts power demand will grow one per cent per year over the next decade, based on modest growth in the population and the economy.

Capital expenditures
We spent a total of $24 million in 2012, and expect to spend $130 million on capital expenditures in Energy in 2013. We fund capital expenditures through existing cash flows and access to capital markets. See page 65 for further discussion on liquidity risk.

Equity investments and acquisitions
In 2012, we also invested $0.7 billion in Bruce Power for capital projects which included the restart of Units 1 and 2 and the West Shift Plus life extension outage on Unit 3 as well as $0.2 billion for the acquisition of the remaining 40 per cent interest in CrossAlta. We expect to spend approximately $0.3 billion on the acquisition of Ontario solar assets and Bruce Power investments in 2013.

UNDERSTANDING THE ENERGY BUSINESS
Our Energy business is made up of three groups:

•

Canadian Power

•

U.S. Power

•

Natural Gas Storage

Energy comparable EBIT – contribution by group, excluding business development expenses
Year ended December 31, 2012

Power generation capacity – contribution by group
Year ended December 31, 2012

2012 Management's discussion and analysis -- 49

Canadian Power

Western Power
We own or have the rights to approximately 2,600 MW of power supply in Alberta and Arizona, through three long-term PPAs, five natural gas-fired cogeneration facilities, and through Coolidge, a simple-cycle, natural gas peaking facility in Arizona.

Power purchased under long-term contracts is as follows:

	Type of contract	With	Expires
Sheerness PPA	Power purchased under a 20-year PPA	ATCO Power and TransAlta Utilities Corporation	2020
Sundance A PPA	Power purchased under a 20-year PPA	TransAlta Utilities Corporation	2017
Sundance B PPA	Power purchased under a 20-year PPA (own 50% through the ASTC Partnership)	TransAlta Utilities Corporation	2020

Power sold under long-term contracts is as follows:

	Type of contract	With	Expires
Coolidge	Power sold under a 20-year PPA	Salt River Project Agricultural Improvements & Power District	2031

Earnings in the Western Power business are maximized by maintaining and optimizing the operations of our power plants, and through various marketing activities.

A disciplined operational strategy is critical to maximizing output and revenue at our cogeneration facilities and maximizing Coolidge earnings, where revenue is based on plant availability, and is not a function of market price.

The marketing function is critical for optimizing returns and managing risk through direct sales to medium and large industrial and commercial companies and other market participants. Our marketing group sells power sourced through the PPAs, markets uncommitted volumes from the cogeneration plants, and buys and sells power and natural gas to maximize earnings from our assets. To reduce exposure associated with uncontracted volumes, we sell a portion of our power in forward sales markets when acceptable contract terms are available.

A portion of our power is retained to be sold in the spot market or under shorter-term forward arrangements. This ensures we have adequate power supply to fulfill our sales obligations if we have unexpected plant outages and provides the opportunity to increase earnings in periods of high spot prices.

Eastern Power
We own or are developing approximately 3,000 MW of power generation capacity in eastern Canada. All of the power produced by these assets is sold under contract.

Disciplined maintenance of plant operations is critical to the results of our eastern power assets, where earnings are based on plant availability and performance.

50 -- TransCanada Corporation

Assets currently operating under long-term contracts are as follows:

	Type of contract	With	Expires
Bécancour1	20-year PPA Steam sold to an industrial customer.	Hydro-Québec	2026
Cartier Wind	20-year PPA	Hydro-Québec	2032
Grandview	20-year tolling agreement to buy 100 per cent of heat and electricity output	Irving Oil	2025
Halton Hills	20-year Clean Energy Supply contract	OPA	2030
Portlands Energy	20-year Clean Energy Supply contract	OPA	2029

1

Power generation has been suspended since 2008.

Assets currently in development are as follows:

	Type of contract	With	Expires
Ontario Solar	20-year Feed-in Tariff (FIT) contracts	OPA	20 years from in-service date
Napanee	20-year Clean Energy Supply contract	OPA	20 years from in-service date

Western and Eastern Power results^1,2
Comparable EBITDA and comparable EBIT are non-GAAP measures. See page 14 for more information.

year ended December 31 (millions of $)		2012	2011	2010
Revenue
	Western power1	640	822	598
	Eastern power2	415	391	243
	Other3	91	69	83
		1,146	1,282	924
Income from equity investments4		68	117	74
Commodity purchases resold
	Western power	(281)	(368)	(363)
	Other5	(5)	(9)	(26)
		(286)	(377)	(389)
Plant operating costs and other		(218)	(242)	(185)
Sundance A PPA arbitration decision6		(30)	-	-
General, administrative and support costs		(48)	(43)	(38)
Comparable EBITDA		632	737	386
Depreciation and amortization7		(152)	(141)	(114)
Comparable EBIT		480	596	272

1

Includes Coolidge starting in May 2011.

2

Includes Cartier phase two of Gros-Morne starting in November 2012, phase one of Gros-Morne starting in November 2011, and Montagne- Sèche starting in November 2011; Halton Hills starting in September 2010.

3

Includes sale of excess natural gas purchased for generation and sales of thermal carbon black.

4

Includes our share of equity income from our investments in ASTC Power Partnership, which holds the Sundance B PPA, and Portlands Energy.

5

Includes the cost of excess natural gas not used in operations.

6

See Significant events for more information about the Sundance A PPA arbitration decision.

7

Does not include depreciation and amortization of equity investments.

2012 Management's discussion and analysis -- 51

Sales volumes and plant availability^1,2
Includes our share of volumes from our equity investments.

year ended December 31			2012	2011	2010
Sales volumes (GWh)
Supply
	Generation
		Western Power1	2,691	2,606	2,373
		Eastern Power2	4,384	3,714	2,359
	Purchased
		Sundance A & B and Sheerness PPAs3	6,906	7,909	10,785
		Other purchases	46	248	314
			14,027	14,477	15,831
Sales
	Contracted
		Western Power1	8,240	8,381	10,096
		Eastern Power2	4,384	3,714	2,375
	Spot
		Western Power	1,403	2,382	3,360
			14,027	14,477	15,831
Plant availability4
Western Power1,5			96%	97%	95%
Eastern Power2,6			90%	93%	94%

1

Includes Coolidge starting in May 2011.

2

Includes Cartier phase two of Gros-Morne starting in November 2012, phase one of Gros-Morne starting in November 2011, and Montagne- Sèche starting in November 2011; Halton Hills starting in September 2010. Also includes volumes related to our 50 per cent ownership interest in Portlands Energy.

3

Includes our 50 per cent ownership interest of Sundance B volumes through the ASTC Power Partnership. No volumes were delivered under the Sundance A PPA in 2012 or 2011.

4

The percentage of time in a period that the plant is available to generate power, regardless of whether it is running.

5

Does not include facilities that provide power to TransCanada under PPAs.

6

Does not include Bécancour because power generation has been suspended since 2008.

Western Power's comparable EBITDA was $335 million in 2012, or $148 million lower than 2011. This was primarily due to the net effect of:

•

the Sundance A PPA force majeure

•

lower purchased PPA volumes during periods of lower spot prices

•

lower equity earnings from ASTC Power Partnership because of the Sundance B arbitration decision

•

incremental earnings from Coolidge, which was placed in service in May 2011

•

higher realized power prices and

•

lower fuel costs.

In the first quarter of 2012, we recorded revenues and costs related to the Sundance A PPA as though the outages of Units 1 and 2 were interruptions of supply in accordance with the terms of the PPA. In July 2012, we received the Sundance A PPA arbitration decision, and recorded a charge of $30 million; an amount equivalent to the pre-tax income we had recorded in first quarter. Because the plant is now in force majeure, we will not record further revenues and costs until the units are returned to service. See pages 59 and 60 for more information about the Sundance A and Sundance B PPA arbitration decisions.

52 -- TransCanada Corporation

In 2011, Western Power's comparable EBITDA was $483 million, or $271 million higher than 2010, and revenue was $822 million, or $224 million higher than 2010. These increases were mainly the result of higher overall realized power prices in Alberta, and incremental earnings from Coolidge, which went in service in May 2011.

Purchased volumes in 2012 were lower than 2011 mainly because of lower utilization of the Sundance B and Sheerness PPAs during periods of lower spot market power prices, and higher plant outage days. Average spot market power prices in Alberta were $64 per MWh in 2012, or 16 per cent lower than 2011. Despite the decrease in spot prices, Western Power earned a higher realized price per MWh in 2012 compared to 2011 as a result of contracting activities.

Western Power's revenue was $640 million in 2012, or $182 million lower than 2011. This was the net effect of:

•

the Sundance A PPA force majeure

•

lower purchased PPA volumes during periods of lower spot prices

•

incremental earnings from Coolidge which was placed in service in May 2011 and

•

higher realized power prices resulting from contracting activities.

Western Power's commodity purchases resold were $281 million in 2012, or $87 million lower than 2011 because of the Sundance A PPA force majeure and lower purchased volumes.

Eastern Power's comparable EBITDA was $345 million in 2012, or $48 million higher than 2011. Revenue also increased by $24 million in 2012, to $415 million. The increases were mainly due to:

•

incremental earnings from Cartier (Montangne-Sèche and phase one of Gros-Morne, which were placed in service in November 2011, and phase two of Gros-Morne which was placed in service in November 2012), and

•

higher contractual earnings at Bécancour.

In 2011, Eastern Power's comparable EBITDA was $297 million, or $85 million higher than 2010. Revenue also increased by $148 million in 2011, to $391 million. The increases were mainly because Halton Hills was placed in service in September 2010, giving us incremental earnings in 2011.

Income from equity investments was $68 million in 2012, or $49 million lower than 2011, mainly due to lower earnings from ASTC Power Partnership because of:

•

lower Sundance B PPA volumes

•

lower spot market power prices and

•

the impact of the Sundance B PPA arbitration decision.

In 2011, income from equity investments was $117 million, or $43 million higher than 2010, mainly because higher spot market power prices increased earnings from the ASTC Power Partnership.

Plant operating costs and other, which includes natural gas fuel consumed in power generation, were $218 million in 2012, or $24 million lower than 2011, mainly because natural gas fuel prices were lower in 2012. In 2011, they were $242 million, or $57 million higher than 2010 mainly because of incremental fuel consumed at Halton Hills.

Depreciation and amortization was $152 million in 2012, or $11 million higher than 2011, mainly because of incremental depreciation from Cartier and Coolidge. In 2011, depreciation and amortization was $141 million, or $27 million higher than 2010 mainly because of incremental depreciation from Halton Hills and Coolidge being placed in service.

Approximately 85 per cent of Western Power sales volumes were sold under contract in 2012 compared to 78 per cent in 2011 and 75 per cent in 2010. To reduce its exposure to spot market prices in Alberta, Western Power has entered into fixed-price power sales contracts to sell approximately 6,700 GWh for 2013 and approximately 4,300 GWh for 2014.

2012 Management's discussion and analysis -- 53

Bruce Power
Bruce Power is a nuclear power generation facility located near Tiverton, Ontario and comprises Bruce A and Bruce B. Bruce A Units 1 to 4 have a combined capacity of approximately 3,000 MW and Bruce B Units 5 to 8 have a combined capacity of approximately 3,200 MW. Bruce B leases the eight nuclear reactors from Ontario Power Generation and subleases Units 1 to 4 to Bruce A.

Bruce Power's generating capacity is fully contracted with the OPA. Results from Bruce Power fluctuate primarily due to the frequency, scope and duration of planned and unplanned outages.

Under the contract with the OPA, all of the output from Bruce A is sold at a fixed price per MWh, adjusted annually for inflation on April 1. Bruce A also recovers fuel costs from the OPA.

Bruce A fixed price	Per MWh
April 1, 2012 – March 31, 2013	$68.23
April 1, 2011 – March 31, 2012	$66.33
April 1, 2010 – March 31, 2011	$64.71

Under the same contract, all output from Bruce B Units 5 to 8 is subject to a floor price adjusted for inflation once a year on April 1.

Bruce B floor price	Per MWh
April 1, 2012 – March 31, 2013	$51.62
April 1, 2011 – March 31, 2012	$50.18
April 1, 2010 – March 31, 2011	$48.96

Bruce B is required to repay payments it receives under the floor price mechanism within a calendar year when the monthly average spot price exceeds the floor price. It has not had to repay any amounts recorded in revenues in the past three years.

Bruce B also enters into fixed-price contracts under which it receives or pays the difference between the contract price and the spot price.

54 -- TransCanada Corporation

Bruce Power results
Our proportionate share

year ended December 31 (millions of $, unless otherwise indicated)		2012	2011	2010
Income/(loss) from equity investments1
Bruce A		(149)	33	35
Bruce B		163	77	138
		14	110	173
Comprised of:
	Revenues	763	817	862
	Operating expenses	(567)	(565)	(564)
	Depreciation and other	(182)	(142)	(125)
		14	110	173
Bruce Power – other information
Plant availability2
	Bruce A3	54%	90%	81%
	Bruce B	95%	88%	91%
	Combined Bruce Power	81%	89%	88%
Planned outage days
	Bruce A	336	60	60
	Bruce B	46	135	70
Unplanned outage days
	Bruce A	18	16	64
	Bruce B	25	24	34
Sales volumes (GWh)1
	Bruce A3	4,194	5,475	5,026
	Bruce B	8,475	7,859	8,184
		12,669	13,334	13,210
Realized sales price per MWh
	Bruce A	$68	$66	$65
	Bruce B4	$55	$54	$58
	Combined Bruce Power	$57	$57	$60

1

Represents our 48.9 per cent ownership interest in Bruce A and 31.6 per cent ownership interest in Bruce B.

2

The percentage of time in a year the plant is available to generate power, regardless of whether it is running.

3

Plant availability and sales volumes for 2012 include the incremental impact of Unit 1 which was returned to service on October 22 and Unit 2, which was returned to service on October 31.

4

Includes revenues under the floor price mechanism, revenues from contract settlements and volumes and revenues associated with deemed generation.

Equity income from Bruce A decreased by $182 million in 2012, to a loss of $149 million, compared to income of $33 million in 2011. The decrease was mainly due to:

•

lower volumes and higher operating costs resulting from the ongoing Unit 4 planned outage, which began on August 2, 2012 and

•

the Unit 3 West Shift Plus planned outage, which began in November 2011 and was completed in June 2012.

These were partially offset by incremental earnings from Units 1 and 2, which were returned to service on October 22 and October 31, 2012, respectively.

2012 Management's discussion and analysis -- 55

Units 1 and 2 have operated at reduced output levels following their return to service and, in late November 2012, Bruce Power took Unit 1 offline for an approximate one month maintenance outage. Bruce Power expects the availability percentages for Units 1 and 2 to increase over time; however, these units have not operated for an extended period of time and may experience slightly higher forced outage rates and reduced availability percentages in 2013. Overall plant availability for Bruce A is expected to be approximately 90 per cent in 2013.

Equity income from Bruce B was $163 million in 2012, or $86 million higher than 2011. The increase was mainly due to higher volumes and lower operating costs resulting from fewer planned outage days, lower lease expense and higher realized prices.

In 2011, equity income from Bruce Power was $110 million, or $63 million lower than 2010. The decrease was mainly from lower equity income at Bruce B, due to lower realized prices resulting from expiration of fixed-price contracts at higher prices and higher operating costs and lower volumes due to increased outage days. Equity income from Bruce Power in 2010 also included the net positive impact of a payment Bruce B made to Bruce A in 2010, related to amendments made to the agreements with the OPA in 2009. The net impact was positive because we have a higher percentage ownership in Bruce A.

The overall plant availability percentage in 2013 is expected to be approximately 90 per cent for Bruce A and high 80s for Bruce B. The Unit 4 outage, which began on August 2, 2012, is expected to be completed in late first quarter 2013. Planned maintenance on Bruce B units is scheduled to occur during the first half of 2013.

U.S. Power

We own approximately 3,800 MW of power generation capacity in New York and New England, including plants powered by natural gas, oil, hydro and wind.

We earn revenues in both New York and New England in two ways – by providing capacity and by selling energy. Capacity markets compensate power suppliers for being available to provide power, and are intended to promote investment in new and existing power resources needed to meet customer demand and maintain a reliable power system. The energy markets compensate power providers for the actual energy they supply.

Providing capacity
Capacity revenues in New York and New England are a function of two factors – capacity prices and plant availability. It is important for us to keep our plant availability high to maximize the amount of capacity we get paid for.

Capacity prices paid to capacity suppliers in New York are determined by a series of voluntary forward auctions and a mandatory spot auction. The forward auctions are bid based while the mandatory spot auction is affected by a demand curve price setting process that is driven by a number of established parameters that are subject to periodic review by the New York ISO and FERC. The parameters are determined for each zone and include the forecasted cost of a new unit entering the market, available existing operable supply and fluctuations in the forecasted demand. Since 2011, we have been engaged in an ongoing regulatory process related to a number of capacity pricing issues in the New York Zone J market where our Ravenswood facility operates. See page 61 for more information.

The price paid for capacity in the New England Power Pool is determined by annual competitive auctions which are held three years in advance of the applicable capacity year. Auction results are impacted by actual and projected power demand, power supply, and other factors.

Selling energy
We focus on selling power under short – and long-term contracts to wholesale, commercial and industrial customers. In some cases, power sales are bundled with other energy services that we earn additional revenues for providing in the following power markets:

•

New York, operated by the New York ISO

•

New England, operated by the New England ISO

•

PJM Interconnection area (PJM), a regional transmission organization that coordinates the movement in wholesale electricity in all or parts of 13 states and the District of Columbia.

56 -- TransCanada Corporation

We meet our power sales commitments using power we generate ourselves or with power we buy at fixed prices, reducing our exposure to changes in commodity prices.

U.S. Power results
Comparable EBITDA and comparable EBIT are non-GAAP measures. See page 14 for more information for more details.

year ended December 31 (millions of US$)		2012	2011	2010
Revenue
	Power1,2	1,189	1,139	1,319
	Capacity	234	227	231
	Other3	51	80	78
		1,474	1,446	1,628
Commodity purchases resold		(765)	(618)	(772)
Plant operating costs and other2		(452)	(514)	(521)
General, administrative and support costs		(48)	(41)	(32)
Comparable EBITDA1		209	273	303
Depreciation and amortization1		(121)	(109)	(116)
Comparable EBIT1		88	164	187

1

Includes phase two of Kibby Wind starting in October 2010.

2

The realized gains and losses from financial derivatives used to buy and sell power, natural gas and fuel oil to manage U.S. Power's assets are presented on a net basis in power revenues.

3

Includes revenues and costs related to a third party service agreement at Ravenswood, the activity level of which decreased in 2012.

Sales volumes and plant availability

year ended December 31		2012	2011	2010
Physical sales volumes (GWh)
Supply
	Generation	7,567	6,880	6,755
	Purchased	9,408	6,018	8,899
		16,975	12,898	15,654
Plant availability1		85%	87%	86%

1

The percentage of time in a year the plant is available to generate power, regardless of whether it is running.

U.S. Power's comparable EBITDA was US$209 million in 2012, or US$64 million lower than 2011. This reflected the net effect of:

•

lower realized power prices

•

higher load serving costs

•

reduced water flows at the TC Hydro facilities

•

increased generation at the Ravenswood facility and

•

higher sales to wholesale, commercial and industrial customers.

In 2011, comparable EBITDA was US$273 million, or US$30 million lower than 2010. This was mainly the result of the negative impact of lower commodity and capacity prices and lower physical sales volumes, partially offset by new sales activity in PJM, an increase in the New York commercial customer base and incremental earnings from phase two of Kibby Wind, which was placed in service in October 2010.

2012 Management's discussion and analysis -- 57

Physical sales volumes in 2012 have increased compared to the same period in 2011, partly due to higher purchased volumes to serve increased sales to wholesale, commercial and industrial customers in the PJM and New England markets. Generation volumes were also higher, mainly because of higher volumes at Ravenswood in the last quarter of 2012 resulting from Superstorm Sandy. Ravenswood ran at higher than normal generation levels both during and following the storm when damage at several other power and transmission facilities reduced power supply in the area. This increase in generation volumes was partly offset by lower hydro volumes.

Power revenue was US$1,189 million in 2012, or US$50 million higher than 2011. This was mainly due to higher sales volumes, partly offset by the effect of lower realized power prices on revenues.

Capacity revenue was US$234 million in 2012, or US$7 million higher than 2011 because realized capacity prices in New York were higher, partially offset by lower capacity prices in New England.

Commodity purchases resold were US$765 million in 2012, or US$147 million higher than 2011 because volumes of physical power purchased for resale under power sales commitments to wholesale, commercial and industrial customers were higher, and load serving costs were higher. The impact of higher volumes was partially offset by lower realized prices on purchased power.

In 2011, power revenue was $1,139 million, or $180 million lower than 2010, and commodity purchases resold were $618 million, or $154 million lower than 2010, mainly because volumes of physical power purchased for resale under power sales commitments to wholesale, commercial and industrial customers were lower.

Plant operating costs and other, which includes fuel gas consumed in generation, was US$452 million in 2012, or US$62 million lower than 2011 mainly because natural gas fuel prices were lower, partly offset by higher gas consumption at Ravenswood resulting from increased generation.

As at December 31, 2012, approximately 2,600 GWh or 34 per cent of US Power's planned generation is contracted for 2013, and 1,000 GWh or 13 per cent for 2014. Planned generation fluctuates depending on hydrology, wind conditions, commodity prices and the resulting dispatch of the assets. Power sales fluctuate based on customer usage.

Natural Gas Storage
We own or control 156 Bcf of non-regulated natural gas storage capacity in Alberta. This includes contracts for long-term, Alberta-based storage capacity from a third party, which expire in 2030, subject to early termination rights in 2015. This business operates independently from our regulated natural gas transmission business and from ANR's regulated storage business, which are included in our Natural Gas Pipelines segment.

Storage capacity

year ended December 31	Working gas storage capacity (Bcf)	Maximum injection/ withdrawal capacity (MMcf/d)
Edson	50	725
CrossAlta1	68	550
Third-party storage	38	630
	156	1,905

1

Reflects the acquisition of the 40 per cent interest held by BP resulting in an additional 27 Bcf of working gas storage capacity in December 2012.

Our natural gas storage business helps balance seasonal and short-term supply and demand, and adds flexibility to the delivery of natural gas to markets in Alberta and the rest of North America. Market volatility creates arbitrage opportunities and our natural gas storage facilities also give customers the ability to capture value from short-term price movements.

58 -- TransCanada Corporation

The natural gas storage business is affected by the change in seasonal natural gas price spreads, which are generally determined by the differential in natural gas prices between the traditional summer injection and winter withdrawal seasons. We manage this exposure by economically hedging storage capacity with a portfolio of third-party storage capacity contracts and proprietary natural gas purchases and sales. We sell a portfolio of short, medium and long-term storage products to participants in the Alberta and interconnected gas markets.

Proprietary natural gas storage transactions include a forward purchase of natural gas to be injected into storage and a simultaneous forward sale of natural gas for withdrawal at a later period, typically during the winter withdrawal season. By matching purchase and sales volumes on a back-to-back basis, we lock in future positive margins, effectively eliminating our exposure to seasonal natural gas price spreads.

These forward natural gas contracts provide highly effective economic hedges but do not meet the specific criteria for hedge accounting and, therefore, are recorded at their fair value through net income based on the forward market prices for the contracted month of delivery. We record changes in the fair value of these contracts in revenues. We do not include changes in the fair value of natural gas forward purchase and sales contracts when we calculate comparable earnings, because they do not represent the amounts that will be realized on settlement.

Natural Gas Storage results
Comparable EBITDA and comparable EBIT are non-GAAP measures. See page 14 for more information.

year ended December 31 (millions of $)	2012	2011	2010
Alberta Storage1	77	84	136
General, administrative and support costs	(10)	(6)	(8)
Natural Gas Storage – comparable EBITDA	67	78	128
Depreciation and amortization	(10)	(12)	(13)
Natural Gas Storage – comparable EBIT	57	66	115

1

Includes our share of equity income from our investment in CrossAlta up to December 18, 2012. On December 18, 2012, we acquired the remaining 40 per cent interest in CrossAlta, bringing our ownership interest to 100 per cent. See significant events on page 61.

Comparable EBITDA was $67 million in 2012, or $11 million lower than 2011, mainly due to the impact of lower realized natural gas storage price spreads, partially offset by lower operating costs throughout the year.

In 2011, comparable EBITDA was $78 million, or $50 million lower than 2010, mainly due to lower realized natural gas storage price spreads.

SIGNIFICANT EVENTS

Canadian Power

Western Power

Sundance A PPA
In December 2010, Sundance A Units 1 and 2 were withdrawn from service and, in January 2011, were subject to a force majeure claim by TransAlta. In February 2011, TransAlta informed us that it was not economic to replace or repair Units 1 and 2, and that the Sundance A PPA should be terminated.

We disputed both the force majeure and the economic destruction claims under the binding dispute resolution process provided in the PPA. In July 2012, an arbitration panel decided that the PPA should not be terminated and ordered TransAlta to rebuild Units 1 and 2. The panel also limited TransAlta's force majeure claim, from November 20, 2011 until the units can reasonably be returned to service. TransAlta announced that it expects the units to be returned to service in the fall of 2013.

2012 Management's discussion and analysis -- 59

Since we considered the outages to be an interruption of supply, we accrued $188 million in pre-tax income between December 2010 and March 2012. The outcome of the decision was that we received approximately $138 million of this amount. We recorded the $50 million difference as a charge to second quarter 2012 earnings, of which $20 million related to amounts accrued in 2011.

We will not record further revenue or costs from the PPA until the units are returned to service. The net book value of the Sundance A PPA recorded in Intangibles and Other Assets remains fully recoverable.

Sundance B PPA

In second quarter 2010, Sundance B Unit 3 experienced an unplanned outage related to mechanical failure of certain generator components and was subject to a force majeure claim by TransAlta. The ASTC Power Partnership, which holds the Sundance B PPA, disputed the claim under the binding dispute resolution process provided in the PPA because we did not believe TransAlta's claim met the test of force majeure. We therefore recorded equity earnings from our 50 per cent ownership interest in ASTC Power Partnership as though this event were a normal plant outage.

In November 2012, an arbitration decision was reached with the arbitration panel granting partial force majeure relief to TransAlta, and we reduced our equity earnings by $11 million from the ASTC Power Partnership to reflect the amount that will not be recovered as result of the decision.

Eastern Power

Napanee Generating Station
In December 2012, we signed a contract with the OPA, to develop, own and operate a new 900 MW natural gas-fired power plant at Ontario Power Generation's Lennox site in Eastern Ontario in the town of Greater Napanee. The plant will replace the facility that was planned and subsequently cancelled in the community of Oakville and will operate under a 20-year Clean Energy Supply contract with the OPA. We were reimbursed for $250 million of costs, mainly related to natural gas turbines that were purchased for the Oakville project, which will now be used at Napanee. We plan to invest approximately $1.0 billion in the Napanee facility.

Cartier Wind
We placed the second phase of the Gros-Morne wind farm project (111 MW) in service in November 2012, completing the 590 MW, five-phase Cartier Wind Project in Québec. All of the power produced by Cartier Wind is sold to Hydro-Québec under 20-year PPAs.

Ontario Solar
In late 2011, we agreed to buy nine Ontario solar projects (combined capacity of 86 MW) from Canadian Solar Solutions Inc., for approximately $476 million. Under the terms of the agreement, Canadian Solar Solutions Inc. will develop and build each of the nine solar projects using photovoltaic panels. We will buy each project once construction and acceptance testing are complete and commercial operation begins. All power produced will be sold under 20-year PPAs with the OPA under the FIT program in Ontario.

We expect to close the acquisition of the first two projects (combined capacity of 20 MW) in the first half of 2013 for a total cost of approximately $125 million. We expect to acquire the other seven projects in 2013 to late 2014, subject to regulatory approvals.

Bécancour
In June 2012, Hydro-Québec notified us that it would exercise its option to extend the agreement to suspend all electricity generation from the Bécancour power plant through 2013. Under the suspension agreement, Hydro-Québec has the option (subject to certain conditions) to extend the suspension every year until regional electricity demand levels recover. We continue to receive capacity payments while generation is suspended.

Bruce Power
This year, Bruce Power completed the refurbishment of Units 1 and 2. Unit 1 was returned to service on October 22, 2012, and Unit 2 on October 31, 2012. An incident in May 2012 within the Unit 2 electrical generator on the non-nuclear side of the plant had delayed returning the units to service. Bruce Power's force

60 -- TransCanada Corporation

majeure claim to the OPA was accepted in August, and it continued to receive the contracted price for power generated during the force majeure period.

Units 1 and 2 have operated at reduced output levels following their return to service and, in late November 2012, Bruce Power took Unit 1 offline for an approximate one month maintenance outage. Bruce Power expects the availability percentages for Units 1 and 2 to increase over time; however, these units have not operated for an extended period of time and may experience slightly higher forced outage rates and reduced availability percentages in 2013. Overall plant availability for Bruce A is expected to be approximately 90 per cent in 2013.

Bruce Power also continued its strategy to maximize the operating life of its reactors. It returned Unit 3 to service in June after completing the $300 million West Shift Plus life extension outage, which began in 2011. Unit 4 is expected to return to service in late first quarter 2013 after the completion of an expanded outage investment program that began in August 2012. These investments should allow Units 3 and 4 to produce low cost electricity until at least 2021.

U.S. Power

Ravenswood
In 2011, we jointly filed two formal complaints with the FERC challenging how the New York ISO applied its buy-side mitigation rules affecting bidding criteria associated with two new power plants that began service in the New York Zone J markets during the summer of 2011.

In June 2012, the FERC addressed the first complaint, indicating it would take steps to increase transparency and accountability for future mitigation exemption tests (MET) and decisions. In September, 2012, the FERC granted an order on the second complaint, directing the New York ISO to retest the two new power plants as well as a transmission project currently under construction using an amended set of assumptions to more accurately perform the MET calculations, in accordance with existing rules and tariff provisions. The recalculation was completed in November 2012 and it was determined that one of the plants had been granted an exemption in error. That exemption was revoked and the plant is now required to offer its capacity at a floor price which has put upward pressure on capacity auction prices since December. The order was prospective only and has no impact on capacity prices for prior periods.

Natural Gas Storage

CrossAlta
In December 2012, we acquired the remaining 40 per cent interests in the Crossfield Gas Storage facility and CrossAlta Gas Storage & Services Ltd. marketing company from BP for approximately $220 million. We now own and operate 100 per cent of CrossAlta. The acquisition added an additional 27 Bcf of working gas storage capacity to our existing portfolio in Alberta.

BUSINESS RISKS
The following are risks specific to our energy business. See page 71 for information about general risks that affect the company as a whole.

Fluctuating power and natural gas market prices
Power and natural gas prices are affected by fluctuations in supply and demand, weather, and by general economic conditions. The power generation facilities in our Western Power operations in Alberta, and in our U.S. Power operations in New England and New York, are exposed to commodity price volatility. Earnings from these businesses are generally correlated to the prevailing power supply and demand conditions and the price of natural gas, as power prices are usually set by gas-fired power supplies. Extended periods of low gas prices will generally exert downward pressure on earnings from these facilities. Our Coolidge Generating Station and our portfolio of assets in Eastern Canada are fully contracted, and are therefore not subject to fluctuating commodity prices. Bruce Power's exposure to fluctuating power prices is discussed further below.

2012 Management's discussion and analysis -- 61

To mitigate the impact of power price volatility in Alberta and the U.S. northeast, we sell a portion of our supply under medium to long-term sales contracts where contract terms are acceptable. A portion of our power is retained to be sold in the spot market or under shorter-term forward arrangements to ensure we have adequate power supply to fulfill sales obligations if we have unexpected plant outages. This unsold supply is exposed to fluctuating power and natural gas market prices. As power sales contracts expire, new forward contracts are entered into at prevailing market prices.

Under an agreement with the OPA, Bruce B volumes are subject to a floor price mechanism. When the spot market price is above the floor price, Bruce B's non-contracted volumes are subject to spot price volatility. When spot prices are below the floor price, Bruce B receives the floor price for all of its output. Bruce B also enters into third party fixed-price contracts where it receives the difference between the contract price and spot price. All Bruce A output is sold into the Ontario wholesale power spot market under a fixed-price contract with the OPA.

Our natural gas storage business is subject to fluctuating seasonal natural gas price spreads which are generally determined by the differential in natural gas prices between the traditional summer injection and winter withdrawal seasons.

U.S. Power capacity payments
A portion of revenues earned by our power facilities in New England and a significant portion of revenues earned by Ravenswood are driven by capacity payments. Fluctuations in capacity prices can have a material impact on these businesses, particularly in New York. New York capacity prices are determined by a series of voluntary forward auctions and a mandatory spot auction. The forward auctions are bid based while the mandatory spot auction is affected by a demand curve price setting process that is driven by a number of established parameters that are subject to period review by the New York ISO and FERC. These parameters are determined for each capacity zone and include the forecasted cost of a new unit entering the market, available existing operable supply and fluctuations in forecasted demand. Capacity payments are also a function of plant availability which is discussed below.

Plant availability
Optimizing and maintaining plant availability is essential to the continued success of our Energy business. Unexpected outages or extended planned outages at our power plants can increase maintenance costs, lower plant output and sales revenue and lower capacity payments and margins. We may also have to buy power or natural gas on the spot market to meet our delivery obligations.

We manage this risk by investing in a highly skilled workforce, operating prudently, running comprehensive, risk-based preventive maintenance programs and making effective capital investments.

For facilities we do not operate, our purchase agreements include a financial remedy if a plant owner does not deliver as agreed. The Sundance and Sheerness PPAs, for example, require the producers to pay us market-based penalties if they cannot supply the amount of power we have agreed to buy.

Regulatory
We operate in both regulated and deregulated power markets in both the United States and Canada. These markets are subject to various federal, state and provincial regulations in both countries. As power markets evolve across North America, there is the potential for regulatory bodies to implement new rules that could negatively affect us as a generator and marketer of electricity. These may be in the form of market rule changes, changes in the interpretation and application of market rules by regulators, price caps, emission controls, cost allocations to generators and out-of-market actions taken by others to build excess generation, all of which negatively affect the price of power or capacity, or both. In addition, our development projects rely on an orderly permitting process and any disruption to that process can have negative effects on project schedules and costs. We are an active participant in formal and informal regulatory proceedings and take legal action where required.

62 -- TransCanada Corporation

Weather
Significant changes in temperature and other weather events have many effects on our business, ranging from the impact on demand, availability and commodity prices, to efficiency and output capability.

Extreme temperature and weather can affect market demand for power and natural gas and can lead to significant price volatility. Extreme weather can also restrict the availability of natural gas and power if demand is higher than supply.

Seasonal changes in temperature can reduce the efficiency of our natural gas-fired power plants, and the amount of power they produce. Variable wind speeds affect earnings from our wind assets.

Hydrology
Our hydroelectric power generation facilities in the northeastern U.S. are subject to potential hydrology risks that can impact the volume of water available for generation at these facilities including weather changes and events, local river management and potential dam failures at these plants or upstream facilities.

Execution, capital cost and permitting
Energy's construction programs are subject to execution, capital cost and permitting risks.

2012 Management's discussion and analysis -- 63

Corporate

OTHER INCOME STATEMENT ITEMS

year ended December 31 (millions of $)	2012	2011	2010
Comparable interest expense	976	939	701
Comparable interest income and other	(86)	(60)	(94)
Comparables income taxes	477	594	402
Net income attributable to non-controlling interests	118	129	115

year ended December 31 (millions of $)	2012	2011	2010
Comparable interest on long-term debt (including interest on junior subordinated notes)
Canadian dollar-denominated	513	490	514
U.S. dollar-denominated	740	734	680
Foreign exchange	—	(7)	20
	1,253	1,217	1,214
Other interest and amortization expense	23	24	74
Capitalized interest	(300)	(302)	(587)
Comparable interest expense	976	939	701

Comparable interest expense this year was $37 million higher than 2011 because of incremental interest on debt issues of US$1.0 billion in August 2012, US$500 million in March 2012 and $750 million in November 2011, and a TC PipeLines, LP debt issue of US$350 million in June 2011 partially offset by the impacts of debt repayments of $980 million and $1,272 million in 2012 and 2011, respectively. These increases also reflected the negative impact of a stronger U.S. dollar on U.S. dollar-denominated interest.

In 2011, comparable interest expense increased $238 million compared to 2010 because of a decrease in capitalized interest due to Keystone and Coolidge being placed in service in 2011 and Halton Hills being placed in service in late 2010. Comparable interest expense on U.S. dollar-denominated debt was higher in 2011 than 2010 due to new debt issues of US$1.0 billion in September 2010 and US$1.25 billion in June 2010. This was partially offset by the impact of a weaker U.S. dollar and the decrease in interest expense on Canadian dollar-denominated debt from debt maturities. In 2011, other interest and amortization expense was lower than 2010 because of gains instead of losses from changes in the fair value of derivatives used to manage our exposure to fluctuating interest rates.

Comparable interest income and other was $26 million higher in 2012 compared to 2011. This increase was mainly because of higher gains in 2012 on derivatives used to manage our net exposure to foreign exchange rate fluctuations on U.S. dollar-denominated income and on translation of foreign denominated working capital balances. In 2011, comparable interest income and other was $34 million lower than 2010 because of lower gains from derivatives used to manage the Company's exposure to foreign exchange rate fluctuations.

Comparable income taxes decreased $117 million in 2012 compared to 2011 mainly because of lower pre-tax earnings. In 2011, comparable income taxes increased $192 million from 2010 because of higher pre-tax earnings in 2011 and higher positive income tax adjustments in 2010 compared to 2011. In 2011 and 2010, we recorded a benefit in current income taxes with an offsetting provision in deferred income taxes due to bonus depreciation for U.S. income tax purposes on the Bison pipeline, which was placed in service in January 2011, and the Wood River/Patoka and Cushing Extension sections of Keystone which were placed in operational service in June 2010 and February 2011, respectively.

Net income attributable to non-controlling interests decreased this year primarily due to lower earnings from Great Lakes.

64 -- TransCanada Corporation

Financial condition

We strive to maintain strong financial capacity and flexibility in all parts of an economic cycle, and rely on our operating cash flows to sustain our business, pay dividends and fund a portion of our growth.

We believe we have the financial capacity to fund our existing capital program through our predictable cash flow from our operations, access to capital markets, cash on hand and substantial committed credit facilities.

We access capital markets to meet our financing needs and manage our capital structure to maintain flexibility and to preserve our credit ratings.

Capital structure

at December 31 (millions of $)	2012	2011
Notes payable	2,275	1,863
Long-term debt	18,913	18,659
Junior subordinated notes	994	1,016
Cash and cash equivalents	(551)	(654)
Debt, net of cash and cash equivalents	21,631	20,884
Equity – controlling interests	16,911	16,794
Equity – non-controlling interests	1,425	1,465
Total equity	18,336	18,259
	39,967	39,143

Consolidated capital structure
at December 31, 2012

1

Net of cash and excluding junior subordinated notes.

2

Includes non-controlling interests in TC PipeLines, LP and Portland.

3

Includes preferred shares of TCPL.

The following table shows how we have financed our business activities over the last three years. We continue to fund our extensive capital program through operations and, when needed, through capital markets securities issuances. Dividends paid on our common shares are included in financing activities.

at December 31 (millions of $)	2012	2011	2010
Cash flow from operating activities	3,571	3,686	2,876
Cash flow used in investing activities	(3,256)	(3,054)	(5,296)
Surplus (deficiency)	315	632	(2,420)
Cash flow (used in)/from financing activities	(403)	(642)	2,188
Net cash used	(88)	(10)	(232)

2012 Management's discussion and analysis -- 65

Our future liquidity will continue to be comprised of cash flow generated from our operations, committed credit facilities and our ability to access debt and equity markets. Our financial flexibility is further supported by opportunities for portfolio management including potential asset sales to TC PipeLines, LP.

Provisions of various trust indentures and credit arrangements that our subsidiaries are party to restrict those subsidiaries' ability to declare and pay dividends or make distributions under certain circumstances. If such restrictions apply, they may, in turn, have an impact on our ability to declare and pay dividends on our common and preferred shares. In the opinion of management, these provisions do not currently restrict or alter our ability to declare or pay dividends. These trust indentures and credit arrangements also require us to comply with various affirmative and negative covenants and maintain certain financial ratios. As at December 31, 2012, we were in compliance with all of our financial covenants.

Cash from operating activities

year ended December 31 (millions of $)	2012	2011	2010
Funds generated from operations	3,284	3,451	3,161
Decrease/(increase) in operating working capital	287	235	(285)
Net cash from operations	3,571	3,686	2,876

Funds generated from operations, a non-GAAP measure, helps us assess the cash generating ability of our operations, excluding the timing effects of working capital changes. See page 14 for more information about non-GAAP measures.

At December 31, 2012, our current liabilities were higher than our current assets, leaving us with a working capital deficit of $3.1 billion. This short-term deficiency is considered to be in the normal course of business and is managed through:

•

our ability to generate cash flow from operations

•

our access to approximately $4.7 billion of unutilized, revolving bank lines, and

•

our ongoing access to capital markets.

Cash used in investing activities

year ended December 31 (millions of $)	2012	2011	2010
Capital expenditures	2,595	2,513	4,376
Other investing activities	661	541	920

Our 2012 capital expenditures were primarily focused on expanding our Alberta System and construction of the Gulf Coast Project. Other investing activities in 2012 included our investment in Bruce Power capital projects.

We are developing quality projects under our current $12 billion capital program. These long-life infrastructure assets are supported by long-term commercial arrangements resulting in very predictable future cash flows.

Cash (used in)/from financing activities

year ended December 31 (millions of $)	2012	2011	2010
Long-term debt issued, net of issue costs	1,491	1,622	2,371
Long-term debt repaid	(980)	(1,272)	(494)
Notes payable issued/(repaid), net	449	(224)	472
Dividends and distributions paid	(1,416)	(1,147)	(866)
Equity financing activities	53	379	705

66 -- TransCanada Corporation

As at December 31, 2012, we had unused capacity of $2.0 billion, $1.25 billion and US$2.5 billion under our equity, Canadian debt and U.S. debt shelf prospectuses to facilitate future access to the North American debt and equity markets. In January 2013, we issued US$750 million of senior notes, reducing the capacity under our U.S. debt shelf prospectus to US$1.75 billion.

Credit facilities
We use committed, revolving credit facilities to support our commercial paper programs, along with additional demand facilities, for general corporate purposes, including issuing letters of credit and providing additional liquidity.

At December 31, 2012, we had $5.3 billion in unsecured credit facilities, including:

Amount	Unused capacity	Subsidiary	For	Matures
$2.0 billion	$2.0 billion	TransCanada PipeLines Limited (TCPL)	Committed, revolving, extendible credit facility that supports TCPL's Canadian commercial paper program	October 2017
US$1.0 billion	US$1.0 billion	TransCanada PipeLine USA Ltd. (TCPL USA)	Committed, revolving credit facility that supports a TCPL USA U.S. dollar commercial paper program in the U.S.	October 2013
US$1.0 billion	US$1.0 billion	TransCanada Keystone Pipeline, LP	Committed, revolving, extendible credit facility that supports a U.S. dollar commercial paper program in Canada dedicated to funding a portion of Keystone	November 2013
US$300 million	US$300 million	TCPL USA	Committed, revolving credit facility that matures in first quarter 2013	February 2013
$1.0 billion	$373 million	TCPL	Demand lines for issuing letters of credit and as a source of additional liquidity. At December 31, 2012, we had outstanding $627 million in letters of credit under these lines	Demand

At December 31, 2012, our operated affiliates had $300 million of undrawn capacity on committed credit facilities.

Contractual obligations
Payments due (by period)

year ended December 31, 2012 (millions of $)	Total	less than one year	1 - 3 years	3 - 5 years	more than 5 years
Notes payable	2,275	2,275	–	–	–
Long-term debt (includes junior subordinated notes)	19,907	894	2,531	1,769	14,713
Operating leases (future annual payments for various premises, services and equipment, less sub-lease receipts)	747	74	145	155	373
Purchase obligations	8,126	3,012	2,261	1,131	1,722
Other long-term liabilities reflected on the balance sheet	381	9	19	21	332
	31,436	6,264	4,956	3,076	17,140

Our contractual obligations include our long-term debt, operating leases, purchase obligations and other liabilities incurred in our business such as environmental liability funds and employee retirement and post-retirement benefit plans.

2012 Management's discussion and analysis -- 67

Long-term debt
At the end of 2012, we had $18.9 billion of long-term debt and $1.0 billion of junior subordinated notes, compared to $18.7 billion of long-term debt and $1.0 billion of junior subordinated notes at December 31, 2011.

Total notes payable were $2.3 billion, compared to $1.9 billion at the end of 2011.

We attempt to spread out the maturity profile of our debt. The majority of our obligations mature beyond five years with an average term of 12 years.

At December 31, 2012, scheduled principal repayments and interest payments related to long-term debt were as follows:

Principal repayments
Payments due (by period)

year ended December 31, 2012 (millions of $)	Total	less than one year	1 - 3 years	3 - 5 years	more than 5 years
Notes payable	2,275	2,275	—	—	—
Long-term debt	18,913	894	2,531	1,769	13,719
Junior subordinated notes	994	—	—	—	994
	22,182	3,169	2,531	1,769	14,713

Interest payments
Payments due (by period)

year ended December 31, 2012 (millions of $)	Total	less than one year	1 - 3 years	3 - 5 years	more than 5 years
Long-term debt	15,377	1,154	2,125	1,908	10,190
Junior subordinated notes	3,443	63	126	126	3,128
	18,820	1,217	2,251	2,034	13,318

Operating leases
Our operating leases for premises, services and equipment expire at different times between now and 2052. Some of our operating leases include the option to renew the agreement for one to 10 years.

Our commitments under the Alberta PPAs are considered operating leases. Future payments under these PPAs depend on plant availability, so we do not include them in our summary of future obligations. Our share of power purchased under the PPAs in 2012 was $303 million (2011 – $394 million; 2010 – $363 million).

We have subleased a part of the PPAs to third parties under terms and conditions similar to our own leases.

Purchase obligations
We have purchase obligations that are transacted at market prices and in the normal course of business, including long-term natural gas transportation and purchase arrangements. At December 31, 2012, our operated affiliates had $0.3 billion of undrawn capacity on committed credit facilities.

68 -- TransCanada Corporation

Payments due (by period)
(not including pension plan contributions)

year ended December 31 (millions of $)	Total	less than one year	1 - 3 years	3 - 5 years	more than 5 years
Natural Gas Pipelines
Transportation by others1	531	112	185	157	77
Capital expenditures2,3	1,322	797	439	86	-
Other	10	2	4	4	-
Oil Pipelines
Capital expenditures2,4	1,732	1,271	461	-	-
Other	40	4	8	8	20
Energy
Commodity purchases5	2,849	388	738	686	1,037
Capital expenditures2,6	62	41	11	10	-
Other7	1,539	377	395	180	587
Corporate
Information technology and other	41	20	20	-	1
	8,126	3,012	2,261	1,131	1,722

1

Rates are primarily based on known 2012 levels. Demand rates may change after 2012. Purchase obligations are based on known or contracted demand volumes only and do not include commodity charges incurred when volumes flow.

2

Amounts are estimates and can vary depending on timing of construction and project enhancements. We expect to fund capital projects with cash from operations, by issuing senior debt and subordinated capital if required, and through portfolio management.

3

Primarily relate to the construction costs of the Alberta System expansion and other natural gas pipeline projects.

4

Primarily relate to Keystone XL and Gulf Coast.

5

Includes fixed and variable components but does not include derivatives. The variable components are estimates and can vary depending on plant production, market prices and regulatory tariffs.

6

Primarily relate to preliminary construction and development costs of Napanee.

7

Includes estimates of certain amounts that may change depending on plant-fired hours, the consumer price index, actual plant maintenance costs, plant salaries and changes in regulated rates for transportation. This also includes the purchase obligation for Ontario Solar.

KEY PURCHASE COMMITMENTS

Ontario Solar
In December 2011, we announced an agreement to purchase nine Ontario solar projects with a combined capacity of 86 MW at a cost of approximately $476 million.

We will acquire each project under 20-year purchase plan agreements with the OPA (under Ontario's FIT program) once construction and acceptance testing are complete and operations have begun. We expect the projects to be acquired between first quarter 2013 and late 2014, subject to regulatory approvals.

GUARANTEES

Bruce Power
We and our partners, Cameco Corporation and BPC Generation Infrastructure Trust (BPC), have severally guaranteed one-third of some of Bruce B's contingent financial obligations related to power sales agreements, a lease agreement and contractor services. The Bruce B guarantees have terms to 2018 except for one guarantee with no termination date that has no exposure associated with it.

We and BPC have each severally guaranteed half of certain contingent financial obligations of Bruce A related to a sublease agreement, an agreement with the OPA to restart the Bruce A power generation units, and certain other financial obligations. The Bruce A guarantees have terms to 2019.

2012 Management's discussion and analysis -- 69

At December 31, 2012, our share of the potential exposure under the Bruce A and B guarantees was estimated to be $897 million. The carrying amount of these guarantees was estimated to be $10 million. Our exposure under certain of these guarantees is unlimited.

Other jointly owned entities
We and our partners in certain other jointly owned entities have also guaranteed (jointly, severally, or jointly and severally) the financial performance of these entities relating mainly to redelivery of natural gas, PPA payments and the payment of liabilities. The guarantees have terms ranging from 2013 to 2040.

Our share of the potential exposure under these assurances was estimated at December 31, 2012 to range between $43 million to a maximum of $89 million. The carrying amount of these guarantees was estimated to be $7 million, and is included in other long-term liabilities. In some cases, if we make a payment that exceeds our ownership interest, the additional amount must be reimbursed by our partners.

OBLIGATIONS – PENSION AND OTHER POST-RETIREMENT PLANS
In 2013, we expect to make funding contributions of approximately $71 million to our defined benefit pension plans and other post-retirement benefit plans and approximately $33 million to our savings plan and defined contribution pension plans. We also expect to provide a $59 million letter of credit to a defined benefit plan in lieu of cash funding.

In 2012, we made funding contributions of approximately $90 million to our defined benefit pension plans and other post-retirement benefit plans and approximately $24 million to our savings plan and defined contribution pension plans. We also provided a $48 million letter of credit to a defined benefit plan in lieu of cash funding.

Outlook
The next actuarial valuation for our pension and other post-retirement benefit plans will be carried out as at January 1, 2014. Based on current market conditions, we expect funding requirements for these plans to approximate 2012 levels for several years. This will allow us to amortize solvency deficiencies in the plans, in addition to normal funding costs.

Our net benefit cost for our defined benefit and other post-retirement plans increased to $99 million in 2012 from $68 million, mainly due to a lower discount rate used to measure the benefit obligation.

Future net benefit costs and the amount we will need to contribute to fund our plans will depend on a range of factors, including:

•

interest rates

•

actual returns on plan assets

•

changes to actuarial assumptions and plan design

•

actual plan experience versus projections, and

•

amendments to pension plan regulations and legislation.

We do not expect future increases in the level of funding needed to maintain our plans to have a material impact on our liquidity.

70 -- TransCanada Corporation

Other information

RISKS AND RISK MANAGEMENT
The following is a summary of general risks that affect our company. You can find risks specific to each operating business segment in the business segment discussions.

Risk management is integral to the successful operation of our business. Our strategy is to ensure that our risks and related exposures are in line with our business objectives and risk tolerance.

We build risk assessment into our decision-making processes at all levels.

The Board's Governance Committee oversees our risk management activities, including making sure there are appropriate management systems in place to manage our risks, and adequate Board oversight of our risk management policies, programs and practices. Other Board committees oversee specific types of risk: the Audit Committee oversees management's role in monitoring financial risk, the Human Resources Committee oversees executive resourcing and compensation, organizational capabilities and compensation risk, and the Health, Safety and Environment Committee oversees operational, safety and environmental risk through regular reporting from management.

Our executive leadership team is accountable for developing and implementing risk management plans and actions, and effective risk management is reflected in their compensation.

Operational risks

Business interruption
Operational risks, including labour disputes, equipment malfunctions or breakdowns, acts of terror, or natural disasters and other catastrophic events, could decrease revenues, increase costs or result in legal or other expenses, all of which could reduce our earnings. We have incident, emergency and crisis management systems to ensure an effective response to minimize further loss or injuries and to enhance our ability to resume operations. We have comprehensive insurance to mitigate certain of these risks, but insurance does not cover all events in all circumstances. Losses that are not covered by insurance may have an adverse effect on our operations, earnings, cash flow and financial position.

Our reputation and relationships
Stakeholders, such as Aboriginal communities, communities, landowners, governments and government agencies, and environmental non-governmental organizations can have a significant impact on our operations, infrastructure developments and overall reputation. Our Stakeholder Engagement Framework – which we have implemented across the company – is our formal commitment to stakeholder engagement. Our four core values – integrity, collaboration, responsibility and innovation – are at the heart of our commitment to stakeholder engagement, and guide us in our interactions with stakeholders.

Execution and capital costs
Investing in large infrastructure projects involves substantial capital commitments, based on the assumption that the new assets will offer an attractive return on investment in the future. Under some contracts, we share the cost of these risks with customers, in exchange for the potential benefit they will realize when the project is finished. While we carefully consider the expected cost of our capital projects, under some contracts we bear capital cost overrun risk which may decrease our return on these projects.

Cybersecurity
Security threats (including cybersecurity threats) and related disruptions can have a negative impact on our business. We rely on our information technology to process, transmit and store electronic information, including information we use to safely operate our assets. A breach in the security of our information

2012 Management's discussion and analysis -- 71

technology could expose our business to a risk of loss, misuse or interruption of critical information and functions that affect operations. This could affect our operations, damage our assets, result in safety incidents, damage to the environment, reputational harm, competitive disadvantage, regulatory enforcement actions and potential litigation, which could have a material adverse effect on our operations, financial position and results of operations.

Pipeline abandonment costs
The NEB's Land Matters Consultation Initiative (LMCI) is an initiative that will require all Canadian pipeline companies regulated by the NEB to set aside funds to cover future abandonment costs.

The NEB provided several key guiding principles during the LMCI process, including the position that abandonment costs are a legitimate cost of providing pipeline service and are recoverable, upon NEB approval, from users of the individual pipeline systems. The first hearing addressing the basis and the approach to the determination of specific pipeline abandonment cost estimates was held in October 2012. Additional hearings and the Board's decisions are scheduled to be completed by June 2014, which implies that 2015 would be the earliest that the collection of funds could begin.

Health, safety and environment
Our approach to managing health and safety and protecting the environment is guided by our HSE commitment statement, which outlines guiding principles for a safe and healthy environment for our employees, contractors and the public, and expresses our commitment to protect the environment.

We are committed to continually improving our occupational health and safety performance, and to promoting safety on and off the job, in the belief that all occupational injuries and illnesses are preventable. We try to work with companies and contractors who share our commitment and approach. We also have environmental controls in place, including physical design, programs, procedures and processes, to help manage the environmental risk factors we are exposed to, including spill and release response.

Management monitors HSE performance and is kept informed about operational issues and initiatives through formal incident and issues management processes and regular reporting.

The safety and integrity of our existing and newly-developed infrastructure is also a top priority. All new assets are designed, constructed and commissioned with full consideration given to safety and integrity, and are brought in service only after all necessary requirements have been satisfied. We expect to spend approximately $402 million in 2013 for pipeline integrity on the pipelines we operate, an increase of $90 million over 2012 primarily due to increased levels of in-line pipeline inspection on all systems as well an increased amount of pipe replacement required due to population encroachment on the pipelines. Under the approved regulatory models in Canada, non-capital pipeline integrity expenditures on NEB-regulated pipelines are treated on a flow-through basis and, as a result, these expenditures have no impact on our earnings. Under the Keystone contracts, pipeline integrity expenditures are recovered through the tolling mechanism and, as a result, these expenditures also have no impact on our earnings. Our pipeline safety record in 2012 continued to be better than industry benchmarks. We experienced no pipeline breaks in 2012 on our operated pipelines.

Spending associated with public safety on the Energy assets is focused primarily on our hydro dams and associated equipment.

Our main environmental risks are:

•

air and greenhouse gas (GHG) emissions

•

product releases, including crude oil and natural gas, into the environment (land, water and air)

•

use, storage and disposal of chemicals, hazardous materials, and

•

compliance with corporate and regulatory policies and requirements.

Environmental compliance and liabilities
Our facilities are subject to stringent federal, state, provincial and local environmental statutes and regulations governing environmental protection, including air and GHG emissions, water quality, wastewater discharges

72 -- TransCanada Corporation

and waste management. Our facilities are required to obtain or comply with a wide variety of environmental registrations, licences, permits and other approvals and requirements. Failure to comply could result in administrative, civil or criminal penalties, remedial requirements or orders for future operations.

We continually monitor our facilities to ensure compliance with all environmental requirements. We routinely monitor proposed changes in environmental policy, legislation and regulation, and where the risks are potentially large or uncertain, we comment on proposals independently or through industry associations.

We are not aware of any material outstanding orders, claims or lawsuits related to releasing or discharging any material into the environment or in connection with environmental protection.

Compliance obligations can result in significant costs associated with installing and maintaining pollution controls, fines and penalties resulting from any failure to comply, and potential limitations on operations.

Remediation obligations can result in significant costs associated with the investigation and remediation of contaminated properties, and with damage claims arising from the contamination of properties.

It is not possible to estimate the amount and timing of all our future expenditures related to environmental matters because:

•

environmental laws and regulations (and interpretation and enforcement of them) can change

•

new claims can be brought against our existing or discontinued assets

•

our pollution control and clean up cost estimates may change, especially when our current estimates are based on preliminary site investigation or agreements

•

we may find new contaminated sites, or what we know about existing sites could change

•

where there is potentially more than one responsible party involved in litigation, we cannot estimate our joint and several liability with certainty.

At December 31, 2012, we had accrued approximately $37 million related to these obligations ($49 million at the end of 2011). This represents the amount that we have estimated that we will need to manage our currently indentified environmental liabilities. We believe that the Company has considered all necessary contingencies and established appropriate reserves for environmental liabilities; however, there is the risk that unforeseen matters may arise requiring us to set aside additional amounts. We adjust this reserve quarterly to account for changes in liabilities.

Emissions regulation risk
We own assets in four regions where there are regulations to address industrial GHG emissions. We have procedures in place to comply with these regulations, including:

•

under the Specified Gas Emitters Regulation in Alberta, industrial facilities with GHG emissions above a certain threshold have to reduce their emissions by 12 per cent below an average intensity baseline. Our Alberta System facilities and Sundance and Sheerness (the coal-fired power facilities we have PPAs with) are subject to this regulation. We recover compliance costs on the Alberta System through the tolls our customers pay. A portion of the compliance costs for Sundance and Sheerness are recovered through market pricing and contract flow through provisions. We recorded $15 million for the Alberta Specified Gas Emitters Regulation in 2012, after contracted cost recovery.

•

B.C. has imposed a tax on carbon dioxide (CO₂) emissions from fossil fuel combustion since 2008. We recover the compliance costs for our compressor and meter stations through the tolls our customers pay. In 2012, we recorded $5 million for the B.C. carbon tax. The cost per tonne of CO₂ increased from $25 to $30 beginning in July 2012

•

Northeastern U.S. states that are members of the Regional Greenhouse Gas Initiative (RGGI) implemented a CO₂ cap-and-trade program for electricity generators beginning January 2009. This program applies to both the Ravenswood and Ocean State Power generation facilities. These costs are generally recovered through the power market, and do not have a significant net impact on our results. We recorded $3 million in 2012 to participate in quarterly auctions of allowances under RGGI

2012 Management's discussion and analysis -- 73

•

the natural gas distributor in Québec collects a hydrocarbon royalty on behalf of the provincial government through a green fund charge. We recorded less than $1 million for the hydrocarbon royalty related to our Bécancour facility in 2012.

In September 2012, the Government of Canada finalized a GHG regulation for the coal-fired electricity sector. Starting in July 2015, companies will have to meet a new GHG emissions performance standard for new and existing units (equal to approximately the emissions of a combined cycle natural gas-fired electrical generation unit). We do not believe the regulation poses a significant risk or will have a significant financial impact, and it may present opportunities for new power generation investment.

There are also federal, regional, state and provincial initiatives in development. While economic events may significantly affect the scope and timing of new regulations, we anticipate that most of our facilities will be subject to future regulations to manage industrial GHG emissions.

As described in the Business interruption section, above, we have a set of procedures in place to manage our response to natural disasters like forest fires, tornadoes, earthquakes, floods, volcanic eruptions and hurricanes, regardless of how they are caused. The procedures, which are included in the Operating Procedures in our Incident Management System, are designed to help protect the health and safety of our employees, minimize risk to the public and limit the impact any operational issues caused by a natural disaster might have on the environment.

Financial risks
We are exposed to market risk, counterparty credit risk and liquidity risk, and have strategies, policies and limits in place to mitigate their impact on our earnings, cash flow and ultimately shareholder value.

These are designed to ensure our risks and related exposures are in line with our business objectives and risk tolerance. We manage market risk and counterparty credit risk within limits that are ultimately established by the Board, implemented by senior management and monitored by our risk management and internal audit groups. Management monitors compliance with market and counterparty risk management policies and procedures, and reviews the adequacy of the risk management framework, overseen by the Audit Committee. Our internal audit group assists the Audit Committee by carrying out regular and ad-hoc reviews of risk management controls and procedures, and reporting up to the Audit Committee.

Market risk
We build and invest in large infrastructure projects, buy and sell energy commodities, issue short-term and long-term debt (including amounts in foreign currencies) and invest in foreign operations. Certain of these activities expose us to market risk from changes in commodity prices and foreign exchange and interest rates which may affect our earnings and the value of the financial instruments we hold.

We use derivative contracts to assist in managing our exposure to market risk, including:

•

forwards and futures contracts – agreements to buy or sell a financial instrument or commodity at a specified price and date in the future. We use foreign exchange and commodity forwards and futures to manage the impact of changes in foreign exchange rates and commodity prices

•

swaps – agreements between two parties to exchange streams of payments over time according to specified terms. We use interest rate, cross-currency and commodity swaps to manage the impact of changes in interest rates, foreign exchange rates and commodity prices

•

options – agreements that give the purchaser the right (but not the obligation) to buy or sell a specific amount of a financial instrument or commodity at a fixed price, either at a fixed date or at any time within a specified period. We use option agreements to manage the impact of changes in interest rates, foreign exchange rates and commodity prices.

We assess contracts we use to manage market risk to determine whether a contract, or a portion of it, meets the definition of a derivative.

74 -- TransCanada Corporation

Commodity price risk
We are exposed to changes in commodity prices, especially electricity and natural gas, and use several strategies to reduce this exposure, including:

•

committing a portion of expected power supply to fixed price sales contracts of varying terms while reserving a portion of our unsold power supply to mitigate operational and price risk in our asset portfolio

•

purchasing a portion of the natural gas we need to fuel our natural gas-fired power plants in advance or entering into contracts that base the sale price of our electricity on the cost of the natural gas, effectively locking in a margin

•

meeting our power sales commitments using power we generate ourselves or with power we buy at fixed prices, reducing our exposure to changes in commodity prices

•

using derivative instruments to enter into offsetting or back-to-back positions to manage commodity price risk created by certain fixed and variable prices in arrangements for different pricing indices and delivery points.

Foreign exchange and interest rate risk
Certain of our businesses generate income in U.S. dollars, but since we report in Canadian dollars, changes in the value of the U.S. dollar against the Canadian dollar can affect our net income. As our U.S. operations continue to grow, our exposure to changes in currency rates increases. Some of this risk is offset by interest expense on U.S. dollar-denominated debt and by using foreign exchange derivatives.

We use foreign exchange derivatives to manage other foreign exchange transactions, including foreign exchange exposures that arise on some of our regulated assets. We defer some of the realized gains and losses on these derivatives as regulatory assets and liabilities until we recover or pay them to shippers according to the terms of the shipping agreements.

We have floating interest rate debt which subjects us to interest rate cash flow risk. We manage this using a combination of interest rate swaps and options.

Average exchange rate – U.S. to Canadian dollars

2012	1.00
2011	0.99
2010	1.03

The impact of changes in the value of the U.S. dollar on our U.S. operations is significantly offset by other U.S. dollar-denominated items, as set out in the table below. Comparable EBIT is a non-GAAP measure. See page 14 for more information.

Significant U.S. dollar-denominated amounts

year ended December 31 (millions of US$)	2012	2011	2010
U.S. and International Natural Gas Pipelines comparable EBIT	660	761	683
U.S. Oil Pipelines comparable EBIT	363	301	-
U.S. Power comparable EBIT	88	164	187
Interest on U.S. dollar-denominated long-term debt	(740)	(734)	(680)
Capitalized interest on U.S. capital expenditures	124	116	290
U.S. non-controlling interests and other	(192)	(192)	(164)
	303	416	316

2012 Management's discussion and analysis -- 75

We hedge our net investment in foreign operations (on an after-tax basis) with U.S. dollar-denominated debt, cross-currency interest rate swaps, forward foreign exchange contracts and foreign exchange options. The fair values and notional or principal amounts for the derivatives designated as a net investment hedge were as follows:

Asset/(liability)

	2012		2011
December 31 (millions of $)	Fair value1	Notional or principal amount	Fair value1	Notional or principal amount
U.S. dollar cross-currency swaps (maturing 2013 to 2019)	82	US$3,800	93	US$3,850
U.S. dollar forward foreign exchange contracts (maturing 2013)	-	US$250	(4)	US$725
	82	US$4,050	89	US$4,575

1

Fair values equal carrying values.

2

Consolidated net income in 2012 included net realized gains of $30 million (2011 – gains of $27 million) related to the interest component of cross-currency swap settlements.

U.S. dollar-denominated debt designated as a net investment hedge

at December 31 (billions of $)	2012	2011
Carrying value	$11.1 (US$11.2)	$10 (US$9.8)
Fair value	$14.3 (US$14.4)	$12.7 (US$12.5)

Fair value of derivatives used to hedge our U.S. dollar investment in foreign operations

at December 31 (millions of $)	2012	2011
Other current assets	71	79
Intangibles and other	47	66
Accounts payable	6	15
Deferred amounts	30	41

Counterparty credit risk
We have exposure to counterparty credit risk in the following areas:

•

accounts receivable

•

portfolio investments

•

the fair value of derivative assets

•

notes receivable.

If a counterparty fails to meet its financial obligations to us according to the terms and conditions of the financial instrument, we could experience a financial loss. We manage our exposure to this potential loss using recognized credit management techniques, including:

•

dealing with creditworthy counterparties – a significant amount of our credit exposure is with investment grade counterparties or, if not, is generally partially supported by financial assurances from investment grade parties

•

setting limits on the amount we can transact with any one counterparty – we monitor and manage the concentration of risk exposure with any one counterparty, and reduce our exposure when we feel we need to and when it is allowed under the terms of our contracts

•

using contract netting arrangements and obtaining financial assurances, like guarantees, letters of credit or cash, when it is available and we believe it is necessary.

76 -- TransCanada Corporation

There is no guarantee, however, these techniques will protect us from material losses.

We review our accounts receivable regularly and record allowances for doubtful accounts using the specific identification method. We had no significant credit losses in 2012 and no significant amounts past due or impaired at year end. We had a credit risk concentration of $259 million with one counterparty ($274 million in 2011). This amount is secured by a guarantee from the counterparty's parent company and we anticipate collecting the full amount.

We have significant credit and performance exposure to financial institutions because they hold cash deposits and provide committed credit lines and letters of credit that help manage our exposure to counterparties and provide liquidity in commodity, foreign exchange and interest rate derivative markets.

Liquidity risk
Liquidity risk is the risk that we will not be able to meet our financial obligations as they come due. We manage our liquidity by continuously forecasting our cash flow for a 12 month period and making sure we have adequate cash balances, cash flow from operations, committed and demand credit facilities and access to capital markets to meet our operating, financing and capital expenditure obligations under both normal and stressed economic conditions.

See page 65 financial condition for more information about our liquidity.

Dealing with legal proceedings
Legal proceedings, arbitrations and actions are part of doing business. The most significant this year were the TransAlta Sundance A claims, which were resolved through a binding arbitration process that resulted in a decision in July 2012. See page 59 for more information.

While we cannot predict the final outcomes of proceedings and actions with certainty, management does not expect any current proceeding or action to have a material impact on our consolidated financial position, results of operations or liquidity. We are not aware of any potential legal proceeding or action that would have a material impact on our consolidated financial position, results of operations or liquidity.

CONTROLS AND PROCEDURES
We meet Canadian and U.S. regulatory requirements for disclosure controls and procedures, internal control over financial reporting and related CEO and CFO certifications.

Disclosure controls and procedures
Management, including our President and CEO and our CFO, evaluated the effectiveness of our disclosure controls and procedures and internal control over financial reporting as at December 31, 2012, as required by the Canadian securities regulatory authorities and by the SEC.

They concluded that:

•

our disclosure controls and procedures were effective in providing reasonable assurance that the information we are required to disclose in reports we file with or send to securities regulatory authorities is compiled and communicated to management (including the President and CEO and the CFO as required) so management can make timely decisions about our disclosure and information is recorded, processed, summarized and reported within the time periods specified under Canadian and U.S. securities laws.

•

our internal control over financial reporting is effective as it is reliable and provides reasonable assurance that our financial reporting and the preparation of our consolidated financial statements for external reporting purposes is in accordance with U.S. GAAP. Management conducted this evaluation based on the framework in Internal control – integrated framework, a publication issued by the Committee of Sponsoring Organizations of the Treadway Commission.

2012 Management's discussion and analysis -- 77

Internal control over financial reporting is a process designed by or supervised by management and involves our Board, Audit Committee, management and other employees.

There was no change in our internal control over financial reporting in 2012 that had or is likely to have a material impact. Note that no matter how well-designed, internal control over financial reporting has inherent limitations, and management can only provide reasonable assurance about the reliability of the preparation and presentation of financial statements for external reporting.

CEO AND CFO CERTIFICATIONS
Our President and CEO and our CFO have attested to the quality of the public disclosure in our fiscal 2012 reports filed with Canadian securities regulators and the SEC, and have filed certifications with them.

CRITICAL ACCOUNTING POLICIES AND ESTIMATES
When we prepare financial statements that conform with U.S. GAAP, we are required to make estimates and assumptions that affect the timing and amount we record for our assets, liabilities, revenues and expenses because these items may be affected by future events. We base the estimates and assumptions on the most current information available, using our best judgment. We also regularly assess the assets and liabilities themselves.

You can find a summary of our significant accounting policies in Note 2 to the consolidated financial statements for the year ended December 31, 2012.

The following accounting policies and estimates require us to make the most significant assumptions when preparing our financial statements and changes in these assumptions could have a material impact on the financial statements.

Rate-regulated accounting
Under U.S. GAAP, a company qualifies to use rate-regulated accounting when it meets three criteria:

•

a regulator must establish or approve the rates for the regulated services or activities

•

the regulated rates must be designed to recover the cost of providing the services or products, and

•

it is reasonable to assume that rates set at levels to recover the cost can be charged to (and collected from) customers because of the demand for services or products and the level of direct and indirect competition.

We believe that the regulated natural gas pipelines we account for using rate-regulated accounting meet these criteria. The most significant impact of using these principles is the timing of when we recognize certain expenses and revenues, which is based on the economic impact of the regulators' decisions about our revenues and tolls, and may be different from what would otherwise be expected under U.S. GAAP. Regulatory assets represent costs that are expected to be recovered in customer rates in future periods. Regulatory liabilities are amounts that are expected to be refunded through customer rates in future periods.

Regulatory assets and liabilities

at December 31 (millions of $)		2012	2011
Regulatory assets
	Regulatory assets	1,629	1,684
	Other current assets	178	178
Regulatory liabilities
	Regulatory liabilities	268	297
	Accounts payable	100	139

78 -- TransCanada Corporation

Depreciation and amortization
Total depreciation and amortization expense in 2012 was $1,375 million (2011 – $1,328 million; 2010 – $1,160 million). Each segment has recorded their portion of this amount.

We depreciate our plant, property and equipment on a straight-line basis over their estimated useful lives once they are ready for their intended use. We estimate their useful lives based on third-party engineering studies, experience and industry practice. When changes to the estimated service lives occur, the change is applied prospectively over the remaining expected useful life, which would result in a change to the depreciation expense in future periods.

We use various rates to calculate the depreciation of different kinds of company assets:

Asset type	Annual rate of depreciation
Natural gas pipeline and compression equipment	1% – 6%
Oil pipeline and pumping equipment	Approximately 2% – 2.5%
Metering and other plant equipment	Various rates
Major power generation and natural gas storage plant, equipment and structures in the energy business	2% – 20%
Other energy equipment	Various rates
Corporate plant, property and equipment	3% – 20%

Natural Gas Pipelines
Regulators for our natural gas pipelines business approve our depreciation rates, which allows us to recover the expense of depreciation from our customers as a cost of providing services. As a result, changes in the estimate of the useful lives of plant, property and equipment have no material impact on net income but have a direct effect on funds generated from operations.

Energy
In addition to the depreciation of our energy assets, we deferred and amortize the initial payment for our PPAs on a straight-line basis over the terms of the contracts, which expire in 2017 and 2020. We included a PPA amortization expense of $52 million in Energy's depreciation and amortization expense for 2010 through 2012.

Impairment of long-lived assets and goodwill
We review long-lived assets (such as plant, property and equipment) and intangible assets for impairment whenever events or changes in circumstances lead us to believe we might not be able to recover an asset's carrying value. If the total of the undiscounted future cash flows we estimate for an asset is less than its carrying value, we consider its fair value to be less than its carrying value, and we calculate an impairment loss to recognize this.

2012 Management's discussion and analysis -- 79

Goodwill
As at December 31, 2012, we reported total goodwill of $3.5 billion (2011 – $3.5 billion).

We test goodwill for impairment annually or more frequently if events or changes in circumstances lead us to believe it might be impaired. We assess qualitative factors to determine whether events or changes in circumstances indicate that goodwill might be impaired, and if we conclude that it is more likely than not that the fair value of the reporting unit is greater than its carrying value, we use a two-step process to test for impairment:

1.

First, we compare the fair value of the reporting unit, including its goodwill, to its book value. If fair value is less than book value, we consider our goodwill to be impaired.

2.

Next, we measure the amount of the impairment by calculating the implied fair value of the reporting unit's goodwill. We do this by deducting the fair value of the tangible and intangible net assets of the reporting units from the fair value we calculated in the first step. If the goodwill's carrying value exceeds its implied fair value, we record an impairment charge.

We base these valuations on our projections of future cash flows, which involves making estimates and assumptions about:

•

discount rates

•

commodity and capacity prices

•

market supply and demand assumptions

•

growth opportunities

•

output levels

•

competition from other companies, and

•

regulatory changes.

If our assumptions change significantly, our requirement to record an impairment charge could also change. There is a risk that adverse changes in key assumptions could result in a future impairment of a portion of the goodwill balance relating to Great Lakes. These assumptions could be negatively impacted by factors including weather, levels of natural gas in storage, the outcome of the 2013 Natural Gas Act Section 4 general rate case and the outcome of the Canadian Restructuring Proposal. Our share of the goodwill related to Great Lakes, net of non-controlling interests, was US$266 million at December 31, 2012 (2011 – US$266 million).

Employee post-retirement benefits
We sponsor defined benefit pension plans, defined contribution plans, a savings plan and other post-retirement benefit plans. We expense contributions we make to these plans, except for our defined benefit plans, in the period we make contributions. We estimate the cost of the defined benefit plans and other post-retirement benefits actuarially, based on service and management's best estimate of expected plan investment performance, salary increases, employee retirement age and expected health care costs. Changes in these estimates could result in a change in the expense and liability amounts.

We measure the assets in the defined benefit plans at fair value, and calculate our expected returns using market-related values based on a five-year moving average for all of the defined benefit plans' assets on a plan-by-plan basis. We amortize past service costs over the expected average remaining service life of the employees, and amortize adjustments arising from plan amendments on a straight-line basis over the average remaining service period of employees active at the date of amendment. Future pension expense and funding could be impacted by changes in plan asset returns, assumed discount rates and other factors dependent on the participants of our plans.

We recognize the overfunded or underfunded status of the defined benefit plans as an asset or liability on the balance sheet, and recognize changes in this status through other comprehensive income (loss) (OCI) in the year the change occurs. When net actuarial gains or losses are higher than 10 per cent of the benefit obligation (or the market-related value of the plan's assets, whichever is higher), we amortize the difference in

80 -- TransCanada Corporation

accumulated other comprehensive income (loss)/income (AOCI) over the average remaining service period of the active employees.

In some of our regulated operations, we can recover some post-retirement benefit amounts through tolls as benefits are funded.

We record unrecognized gains and losses, or changes in actuarial assumptions related to our post-retirement benefit plans, as either regulatory assets or liabilities, and amortize them on a straight-line basis over the average remaining service life of active employees.

Asset retirement obligations
When there is a legal obligation to set aside funds to cover future abandonment costs, and we can reasonably estimate them, we recognize the fair value of the asset retirement obligation in our financial statements.

We cannot determine when we will retire many of our hydro-electric power plants, oil pipelines, natural gas pipelines and transportation facilities and regulated natural gas storage systems because we intend to operate them as long as there is supply and demand, and so we have not recorded obligations for them.

For those we do record, we use the following assumptions:

•

when we expect to retire the asset

•

the scope of abandonment and reclamation activities that are required

•

inflation and discount rates.

The ARO is initially recorded when the obligation exists and is subsequently accreted through charges to operating expenses.

We continue to evaluate our future abandonment obligations and costs and monitor developments that could affect the amounts we record.

Canadian regulated pipelines
The NEB's LMCI is an initiative for all pipeline companies regulated under the National Energy Board Act (Canada) to begin collecting and setting aside funds to cover future abandonment costs.

As part of the guidance provided by the initiative, the NEB has stated that abandonment costs are a legitimate cost of providing pipeline service and should be recoverable (with NEB approval) from system users.

In May 2009, the NEB established several filing deadlines for pipeline companies, including deadlines for

•

estimating their pipeline abandonment costs

•

proposing how they will collect these funds (through tolls or another satisfactory method)

•

proposing how they will set aside the funds they collect.

We filed estimates for our regulated Canadian oil and natural gas pipelines in November 2011 as required. Based on the NEB's direction in 2009, the soonest we could begin collecting funds through cost of service tolls would be 2015. The specific impacts on tolls will be the subject of an NEB filing expected in May 2013.

2012 Management's discussion and analysis -- 81

FINANCIAL INSTRUMENTS
All financial instruments, including both derivative and non-derivative financial instruments, are recorded on the balance sheet at fair value unless they were entered into and continue to be held for the purpose of receipt or delivery in accordance with our normal purchases and normal sales exemptions and are documented as such. In addition, fair value accounting is not required for other financial instruments that qualify for certain accounting exemptions.

We apply hedge accounting to derivative instruments that qualify. We recognize three kinds of hedges including fair value and cash flow hedges, and hedges of foreign currency exposures of net investments in foreign operations. Changes in fair value are recorded according to the accounting rules that apply as outlined in the table below. Hedge accounting is discontinued prospectively if the hedging relationship is no longer effective or the hedging or hedged items cease to exist as a result of maturity, expiry, sale, termination, cancellation or exercise.

Type of hedge	How we record derivative instruments in hedging relationships
Fair value hedge	The carrying value of the hedged item is adjusted for changes in fair value attributable to the hedged risk and these changes are recognized in net income. To the extent that the hedging relationship is effective, changes in the fair value of the hedged item are offset by changes in the fair value of the hedging derivative, which are also recorded in net income. Changes in the fair value of foreign exchange and interest rate fair value hedges are recorded in interest income and other and interest expense. When fair value hedge accounting is discontinued, the carrying value of the hedged item is no longer adjusted and the cumulative fair value adjustments are amortized to net income over the remaining term of the original hedging relationship.
Cash flow hedge	We recognize the effective portion of the change in the fair value of the hedging derivative initially in OCI, and any ineffective portion is recognized in net income in the same financial statement category as the underlying transaction. When cash flow hedge accounting is discontinued, the amounts previously in AOCI are reclassified to revenues, interest expense and interest income and other, as appropriate, during the periods when the variability in cash flows of the hedged item affects net income or the original hedged item settles. When the hedged item is sold or terminated early, or when it becomes probable that the anticipated transaction will not occur, we immediately reclassify any gains and losses from AOCI to net income.
Hedge of foreign currency exposure for net investments in foreign operations	We recognize the effective portion of foreign exchange gains and losses on the hedging instruments in OCI and the ineffective portion in interest income and other.

82 -- TransCanada Corporation

In some cases, derivatives do not meet the specific criteria for hedge accounting treatment, and the changes in fair value are recorded in net income in the period of change. This may expose us to increased variability in reported operating results because the fair value of the derivative instruments can fluctuate significantly from period to period; however, we enter into the arrangements as they are considered to be effective economic hedges.

Derivatives embedded in other financial instruments or contracts (host instrument) are recorded as separate derivatives. Embedded derivatives are measured at fair value if their economic characteristics are not clearly and closely related to those of the host instrument, their terms are the same as those of a stand-alone derivative and the total contract is not a derivative or accounted for at fair value. Changes in the fair value of embedded derivatives are included in net income.

The recognition of gains and losses on the derivatives for the Canadian natural gas regulated pipelines exposures is determined through the regulatory process. Gains and losses arising from changes in the fair value of derivatives accounted for as part of rate regulated accounting, including those that qualify for hedge accounting treatment, can be recovered through the tolls charged by us. As a result, these gains and losses are deferred as regulatory assets or regulatory liabilities and are refunded to or collected from the ratepayers in subsequent years when the derivative settles.

Fair values

Non-derivative Instruments
Certain financial instruments including cash and cash equivalents, accounts receivable, intangibles and other assets, notes payable, accounts payable, accrued interest and other long-term liabilities have carrying amounts that approximate their fair value due to the nature of the item or the short time to maturity. The fair value of our notes receivable is calculated by discounting future payments of interest and principal using forward interest rates. The fair value of long-term debt has been estimated based on quoted market prices for the same or similar debt instruments. The fair value of available for sale assets has been calculated using quoted market prices where available.

Derivative Instruments
The fair value of foreign exchange and interest rate derivatives has been calculated using the income approach which uses year-end market rates and applies a discounted cash flow valuation model. The fair values of power and natural gas derivatives has been calculated using quoted market prices where available. In the absence of quoted market prices, third-party broker quotes or other valuation techniques have been used.

Credit risk has been taken into consideration when calculating the fair value of derivatives, notes receivable and long-term debt.

2012 Management's discussion and analysis -- 83

Non-derivative financial instruments summary

	2012		2011
at December 31 (millions of $)	Carrying amount1	Fair value2	Carrying amount1	Fair value2
Financial assets
Cash and cash equivalents	551	551	654	654
Accounts receivable and other3	1,288	1,337	1,359	1,403
Available for sale assets3	44	44	23	23
	1,883	1,932	2,036	2,080
Financial liabilities4
Notes payable	2,275	2,275	1,863	1,863
Accounts payable and deferred amounts5	1,535	1,535	1,329	1,329
Accrued interest	368	368	365	365
Long-term debt	18,913	24,573	18,659	23,757
Junior subordinated notes	994	1,054	1,016	1,027
	24,085	29,805	23,232	28,341

1

Recorded at amortized cost, except for US$350 million (2011 – US$350 million) of long-term debt that is attributed to hedged risk and recorded at fair value. This debt, which is recorded at fair value on a recurring basis, is classified in Level II of the fair value hierarchy using the income approach based on interest rates from external data service providers.

2

The fair value measurement of financial assets and liabilities recorded at amortized cost for which fair value is not equal to the carrying value would be included in Level II of the fair value hierarchy using the income approach based on interest rates from external data service providers.

3

At December 31, 2012, the consolidated balance sheet included financial assets of $1.1 billion (2011 – $1.1 billion) in accounts receivable, $40 million (2011 – $41 million) in other current assets and $240 million (2011 – $247 million) in intangible and other assets.

4

Consolidated net income in 2012 included losses of $10 million (2011 – losses of $13 million) for fair value adjustments attributable to the hedged interest rate risk associated with interest rate swap fair value hedging relationship on US$350 million of debt at December 31, 2012 (2011 – US$350 million). There were no other unrealized gains or losses from fair value adjustments to non-derivative financial instruments.

5

At December 31, 2012, the consolidated balance sheet included financial liabilities of $1.5 billion (2011 – $1.2 billion) in accounts payable, and $38 million (2011 – $137 million) in other long-term liabilities.

Contractual repayments of non-derivative financial liabilities – Principal and interest payments due by period

at December 31, 2012 (millions of $)	Total	2013	2014 and 2015	2016 and 2017	2018 and thereafter
Notes payable	2,275	2,275	-	-	-
Long-term debt	18,913	894	2,531	1,769	13,719
Junior subordinated notes	994	-	-	-	994
	22,182	3,169	2,531	1,769	14,713

Interest payments on non-derivative financial liabilities – Principal and interest payments due by period

at December 31, 2012 (millions of $)	Total	2013	2014 and 2015	2016 and 2017	2018 and thereafter
Long-term debt	15,377	1,154	2,125	1,908	10,190
Junior subordinated notes	3,443	63	126	126	3,128
	18,820	1,217	2,251	2,034	13,318

84 -- TransCanada Corporation

2012 Derivative instruments summary
The following summary does not include hedges of our net investment in foreign operations.

(millions of $ except where noted)			Power	Natural gas	Foreign exchange	Interest
Derivative instruments held for trading1
Fair values2
	Assets		$139	$88	$1	$14
	Liabilities		$(176)	$(104)	$(2)	$(14)
Notional values
	Volumes3
		Purchases	31,135	83	-	-
		Sales	31,066	65	-	-
	Canadian dollars		-	-	-	620
	U.S. dollars		-	-	US1,408	US200
	Cross-currency		-	-	-	-
Net unrealized (losses)/gains in the year4			$(30)	$2	$(1)	$-
Net realized gains/(losses) in the year4			$5	$(10)	$26	$-
Maturity dates			2013 – 2017	2013 – 2016	2013	2013 – 2016
Derivative instruments in hedging relationships5,6
Fair values2
	Assets		$76	$-	$-	$10
	Liabilities		$(97)	$(2)	$(38)	$-
Notional values
	Volumes3
		Purchases	15,184	1	-	-
		Sales	7,200	-	-	-
	U.S. dollars		-	-	US12	US350
	Cross-currency		-	-	136/US100	-
Net realized (losses)/gains in the year4			$(130)	$(23)	$-	$7
Maturity dates			2013 – 2018	2013	2013 – 2014	2013 – 2015

1

All derivative instruments held for trading have been entered into for risk management purposes and are subject to our risk management strategies, policies and limits. This includes derivatives that have not been designated as hedges or do not qualify for hedge accounting treatment but have been entered into as economic hedges to manage our exposure to market risk.

2

Fair values equal carrying values.

3

Volumes for power and natural gas derivatives are in GWh and Bcf, respectively.

4

Realized and unrealized gains and losses on held for trading derivative instruments used to purchase and sell power and natural gas are included net in revenues. Realized and unrealized gains and losses on interest rate and foreign exchange derivative financial instruments held for trading are included in interest expense and interest income and other, respectively. The effective portion of the change in fair value of derivative instruments in hedging relationships is initially recognized in OCI and reclassified to revenues, interest expense and interest income and other, as appropriate, as the original hedged item settles.

5

All hedging relationships are designated as cash flow hedges except for interest rate derivative financial instruments designated as fair value hedges with a fair value of $10 million and a notional amount of US$350 million. In 2012, net realized gains on fair value hedges were $7 million and were included in interest expense. In 2012, we did not record any amounts in net income related to ineffectiveness for fair value hedges.

6

In 2012, there were no gains or losses included in net income relating to discontinued cash flow hedges where it was probable that the anticipated transaction would not occur.

The anticipated timing of settlement of the derivative instruments assumes constant commodity prices, interest rates and foreign exchange rates at December 31, 2012. Settlements will vary based on the actual value of these factors at the date of settlement.

Anticipated timing of settlement – derivative instruments

at December 31, 2012 (millions of $)		Total	2013	2014 and 2015	2016 and 2017	2018 and thereafter
Anticipated timing of settlement – derivative contracts
Derivative instruments held for trading
	Assets	242	141	99	2	-
	Liabilities	(296)	(175)	(117)	(4)	-
Derivative instruments in hedging relationships
	Assets	204	117	85	2	-
	Liabilities	(173)	(105)	(55)	(11)	(2)
		(23)	(22)	12	(11)	(2)

2012 Management's discussion and analysis -- 85

2011 Derivative instruments summary
The following summary does not include hedges of our net investment in foreign operation.

(millions of $, except where noted)			Power	Natural gas	Foreign exchange	Interest
Derivative instruments held for trading1
Fair values2
	Assets		$185	$176	$3	$22
	Liabilities		$(192)	$(212)	$(14)	$(22)
Notional values
	Volumes3
		Purchases	21,905	103	-	-
		Sales	21,334	82	-	-
	Canadian dollars		-	-	-	684
	U.S. dollars		-	-	US1,269	US250
	Cross-currency		-	-	47/US37	-
Net unrealized (losses)/gains in the year4			$(2)	$(50)	$(4)	$1
Net realized gains/(losses) in the year4			$42	$(74)	$10	$1
Maturity dates			2012 – 2016	2012 – 2016	2012	2012 – 2016
Derivative instruments in hedging relationships5,6
Fair values2
	Assets		$16	$3	$-	$13
	Liabilities		$(277)	$(22)	$(38)	$(1)
Notional values
	Volumes3
		Purchases	17,188	8	-	-
		Sales	8,061	-	-	-
	U.S. dollars		-	-	US73	US600
	Cross-currency		-	-	136/US100	-
Net realized losses in the year4			$(165)	$(17)	$-	$(16)
Maturity dates			2012 – 2017	2012 – 2013	2012 – 2014	2012 – 2015

1

All derivative instruments held for trading have been entered into for risk management purposes and are subject to our risk management strategies, policies and limits. These include derivatives that have not been designated as hedges or do not qualify for hedge accounting treatment but have been entered into as economic hedges to manage our exposures to market risk.

2

Fair values equal carrying values.

3

Volumes for power and natural gas derivatives are in GWh and Bcf, respectively.

4

Realized and unrealized gains and losses on held for trading derivative instruments used to purchase and sell power and natural gas are included net in revenues. Realized and unrealized gains and losses on interest rate and foreign exchange derivative instruments held for trading are included in interest expense and interest income and other, respectively. The effective portion of the change in fair value of derivative instruments in hedging relationships is initially recognized in OCI and reclassified to revenues, interest expense and interest income and other, as appropriate, as the original hedged item settles.

5

All hedging relationships are designated as cash flow hedges except for interest rate derivative instruments designated as fair value hedges with a fair value of $13 million and a notional amount of US$350 million. In 2011, net realized gains on fair value hedges were $7 million and were included in interest expense. In 2011, we did not record any amounts in net income related to ineffectiveness for fair value hedges.

6

In 2011, there were no gains or losses included in net income relating to discontinued cash flow hedges where it was probable that the anticipated transaction would not occur.

86 -- TransCanada Corporation

Balance sheet presentation of derivative financial instruments
The fair value of the derivative financial instruments on the balance sheet.

at December 31 (millions of $)	2012	2011
Current
Other current assets	259	361
Accounts payable and other	(283)	(485)
Long term
Intangibles and other assets	187	202
Other long-term liabilities	(186)	(349)

Derivatives in cash flow hedging relationships
The components of OCI related to derivatives in cash flow hedging relationships.

Cash flow hedges¹

year ended December 31 (millions of $,	Power		Natural gas		Foreign exchange		Interest
pre-tax)	2012	2011	2012	2011	2012	2011	2012	2011
Change in fair value of derivative instruments recognized in OCI (effective portion)	83	(263)	(21)	(59)	(1)	5	-	(1)
Reclassification of gains and losses on derivative instruments from AOCI to Net Income (effective portion)	147	81	54	100	-	-	18	43
Gains and losses on derivative instruments recognized in earnings (ineffective portion)	7	-	-	-	-	-	-	-

1

No amounts have been excluded from the assessment of hedge effectiveness.

Credit risk related contingent features
Derivatives often contain financial assurance provisions that may require us to provide collateral if a credit risk-related contingent event occurs (for example, if our credit rating is downgraded to non-investment grade). We may also need to provide collateral if the fair value of our derivative financial instruments exceeds pre-defined exposure limits.

Based on contracts in place and market prices at December 31, 2012, the aggregate fair value of all derivative contracts with credit-risk-related contingent features that were in a net liability position was $37 million (2011 – $110 million), with collateral provided in the normal course of business of nil (2011 – $28 million).

If the credit-risk-related contingent features in these agreements were triggered on December 31, 2012, we would have been required to provide additional collateral of $37 million (2011 – $82 million) to our counterparties. We have sufficient liquidity in the form of cash and undrawn committed revolving bank lines to meet these contingent obligations should they arise.

2012 Management's discussion and analysis -- 87

Fair value hierarchy
Financial assets and liabilities that are recorded at fair value are required to be categorized into three levels based on a fair value hierarchy.

Levels	How fair value has been determined
Level I	Quoted prices in active markets for identical assets and liabilities that we have the ability to access at the measurement date.
Level II	Valuation based on the extrapolation of inputs other than quoted prices included within Level I, for which all significant inputs are observable directly or indirectly. Inputs include published exchange rates, interest rates, interest rate swap curves, yield curves and broker quotes from external data service providers. This category includes interest rate and foreign exchange derivative assets and liabilities where fair value is determined using the income approach and power and natural gas commodity derivatives where fair value is determined using the market approach.
Level III	Valuation of assets and liabilities measured on a recurring basis using a market approach based on inputs that are unobservable and significant to the overall fair value measurement. This category includes long-dated commodity transactions in certain markets where liquidity is low. Long term electricity prices are estimated using a third-party modeling tool which takes into account physical operating characteristics of generation facilities in the markets in which we operate. Inputs into the model include market fundamentals such as fuel prices, power supply additions and retirements, power demand, seasonal hydro conditions and transmission constraints. Long-term North American natural gas prices are based on a view of future natural gas supply and demand, as well as exploration and development costs. Significant decreases in fuel prices or demand for electricity or natural gas, or increases in the supply of electricity or natural gas would result in a lower fair value measurement of contracts included in Level III.

Financial assets and liabilities measured on a recurring basis
Current and non-current portions

		Quoted prices in active markets (Level I)1		Significant other observable inputs (Level II)1,2		Significant unobservable inputs (Level III)2		Total
at December 31 (millions of $, pre-tax)		2012	2011	2012	2011	2012	2011	2012	2011
Derivative instrument assets:
	Interest rate contracts	-	-	24	35	-	-	24	35
	Foreign exchange contracts	-	-	119	142	-	-	119	142
	Power commodity contracts	-	-	213	201	2	-	215	201
	Gas commodity contracts	75	124	13	55	-	-	88	179
Derivative instrument liabilities:
	Interest rate contracts	-	-	(14)	(23)	-	-	(14)	(23)
	Foreign exchange contracts	-	-	(76)	(102)	-	-	(76)	(102)
	Power commodity contracts	-	-	(269)	(454)	(4)	(15)	(273)	(469)
	Gas commodity contracts	(95)	(208)	(11)	(26)	-	-	(106)	(234)
Non-derivative financial instruments:
	Available-for-sale assets	44	23	-	-	-	-	44	23
		24	(61)	(1)	(172)	(2)	(15)	21	(248)

1

Transfers between Level I and Level II would occur when there is a change in market circumstances. There were no transfers between Level I and Level II in 2012 and 2011.

2

Assets and liabilities measured at fair value can fluctuate between Level II and Level III depending on the proportion of the value of the contract that extends beyond the time frame for which inputs are considered to be observable. As contracts near maturity and observable market data become available, they are transferred out of Level III and into Level II. There were no transfers out of Level II and into Level III in 2012 and 2011.

88 -- TransCanada Corporation

Net change in the Level III fair value category

(millions of $, pre-tax)	Derivatives1,2
Balance at December 31, 2010	(8)
New contracts	1
Settlements	2
Transfers out of Level III	3
Total gains/(losses) included in OCI	(13)
Balance at December 31, 2011	(15)
Settlements	(1)
Transfers out of Level III	(21)
Total gains included in net income	11
Total gains/(losses) included in OCI	24
Balance at December 31, 2012	(2)

1

The fair value of derivative assets and liabilities is presented on a net basis.

2

At December 31, 2012, there were unrealized gains included in net income attributed to derivatives that were still held at the reporting date of $1 million (2011 – nil).

A 10 per cent increase or decrease in commodity prices, with all other variables held constant, would result in a $4 million decrease or increase, respectively, in the fair value of outstanding derivative instruments included in Level III at December 31, 2012.

ACCOUNTING CHANGES

Changes in accounting policies for 2012

Fair value measurement
We adopted the Financial Accounting Standards Board's (FASB) accounting standards update on fair value measurements, and increased our qualitative and quantitative disclosures about Level III measurements effective January 1, 2012.

Intangibles – goodwill
We adopted the FASB accounting standards update on testing goodwill for impairment, and changed our accounting policy related to testing goodwill for impairment effective January 1, 2012. We now assess qualitative factors affecting the fair value of a reporting unit compared to its carrying amount first, before deciding whether to proceed to the two-step quantitative impairment test. The adoption of this standard and our assessment of goodwill in 2012 did not result in any finding of impairment. For further information see impairment of long-lived assets and goodwill on page 80.

Future accounting changes

Balance sheet offsetting/netting
In December 2011, the FASB issued an amendment requiring companies to provide disclosure that will help readers understand the effect, or potential effect, of netting arrangements on the company's financial position. This guidance, which will be effective for annual periods beginning on or after January 1, 2013, will require us to include additional information about financial instruments and derivative instruments that are either offset in accordance with current U.S. GAAP or subject to an enforceable master netting arrangement, or other similar agreement.

2012 Management's discussion and analysis -- 89

QUARTERLY RESULTS

Selected quarterly consolidated financial data
(unaudited, millions of $, except per share amounts)

2012		Fourth	Third	Second	First
Revenues		2,089	2,126	1,847	1,945
Net income attributable to common shares		306	369	272	352
Share statistics
	Net income per share – basic and diluted	$0.43	$0.52	$0.39	$0.50
	Dividends declared per common share	$0.44	$0.44	$0.44	$0.44

2011		Fourth	Third	Second	First
Revenues		2,015	2,043	1,851	1,930
Net income attributable to common shares		376	386	353	411
Share statistics
	Net income per share – basic and diluted	$0.53	$0.55	$0.50	$0.59
	Dividends declared per common share	$0.42	$0.42	$0.42	$0.42

Factors affecting quarterly financial information by business segment
Quarter-over-quarter revenues and net income fluctuate for reasons that vary across our business segments.

In Natural Gas Pipelines, except for seasonal fluctuations in short-term throughput volumes on U.S. pipelines, quarter-over-quarter revenues and net income generally remain relatively stable during any fiscal year. Over the long term, however, they fluctuate because of:

•

regulators' decisions

•

negotiated settlements with shippers

•

acquisitions and divestitures

•

developments outside of the normal course of operations

•

newly constructed assets being placed in service.

In Oil Pipelines, annual revenues and net income are based on contracted crude oil transportation and uncommitted spot transportation. Quarter-over-quarter revenues and net income during any particular fiscal year remain relatively stable.

In Energy, quarter-over-quarter revenues and net income are affected by:

•

weather

•

customer demand

•

market prices for natural gas and energy

•

capacity prices and payments

•

planned and unplanned plant outages

•

acquisitions and divestitures

•

certain fair value adjustments

•

developments outside of the normal course of operations

•

newly constructed assets being placed in service.

Factors affecting financial information by quarter

Fourth quarter 2012

•

EBIT included net unrealized losses of $17 million pre-tax ($12 million after-tax) from certain risk management activities.

90 -- TransCanada Corporation

Third quarter 2012

•

EBIT included net unrealized gains of $31 million pre-tax ($20 million after tax) from certain risk management activities.

Second quarter 2012

•

EBIT included a $50 million pre-tax charge ($37 million after tax) from the Sundance A PPA arbitration decision, and net unrealized losses of $14 million pre-tax ($13 million after tax) from certain risk management activities.

First quarter 2012

•

EBIT included net unrealized losses of $22 million pre-tax ($11 million after tax) from certain risk management activities.

Fourth quarter 2011

•

EBIT included net unrealized after-tax gains of $11 million ($13 million pre-tax) resulting from certain risk management activities.

Third quarter 2011

•

EBIT included net unrealized losses of $43 million pre-tax ($30 million after tax) resulting from certain risk management activities.

Second quarter 2011

•

EBIT included net unrealized losses of $3 million pre-tax ($2 million after tax) resulting from certain risk management activities.

First quarter 2011

•

EBIT included net unrealized losses of $19 million pre-tax ($12 million after tax) resulting from certain risk management activities.

•

Natural Gas Pipelines EBIT included incremental earnings from Bison, which we placed in service in January 2011.

•

Oil Pipelines began recording EBIT for the Keystone Pipeline System in February 2011.

2012 Management's discussion and analysis -- 91

FOURTH QUARTER 2012 HIGHLIGHTS

Reconciliation of non-GAAP measures

Three months ended December 31 (unaudited) (millions of $, except per share amounts)		2012	2011
Comparable EBITDA		1,052	1,120
Depreciation and amortization		(343)	(341)
Comparable EBIT		709	779
Other income statement items
Comparable interest expense		(246)	(251)
Comparable interest income and other		20	8
Comparable income taxes		(123)	(124)
Net income attributable to non-controlling interests		(28)	(33)
Preferred share dividends		(14)	(14)
Comparable earnings		318	365
Specific item (net of tax)
	Risk management activities1	(12)	11
Net income attributable to common shares		306	376
Comparable interest expense		(246)	(251)
Specific item:
	Risk management activities	-	-
Interest expense		(246)	(251)
Comparable interest income and other		20	8
Specific item
	Risk management activities1	(5)	35
Interest income and other		15	43
Comparable income taxes		(123)	(124)
Specific item
	Risk management activities1	5	(2)
Income taxes expense		(118)	(126)
Comparable earnings per common share		$0.45	$0.52
Specific item (net of tax)
	Risk management activities1	(0.02)	0.01
Net income per common share		$0.43	$0.53

1

Three months ended December 31

(unaudited) (millions of $)	2012	2011
Risk management activities gains/(losses):
Canadian Power	(6)	-
U.S. Power	(5)	(33)
Natural Gas Storage	(1)	11
Interest rate	-	-
Foreign exchange	(5)	35
Income taxes attributable to risk management activities	5	(2)
Risk management activities	(12)	11

92 -- TransCanada Corporation

EBITDA and EBIT by Business Segment

Three months ended December 31, 2012 (unaudited) (millions of $)	Natural Gas Pipelines	Oil Pipelines	Energy	Corporate	Total
Comparable EBITDA	690	172	222	(32)	1,052
Depreciation and amortization	(236)	(36)	(68)	(3)	(343)
Comparable EBIT	454	136	154	(35)	709

Three months ended December 31, 2011 (unaudited) (millions of $)	Natural Gas Pipelines	Oil Pipelines	Energy	Corporate	Total
Comparable EBITDA	716	179	254	(29)	1,120
Depreciation and amortization	(235)	(35)	(67)	(4)	(341)
Comparable EBIT	481	144	187	(33)	779

Highlights by line item

Comparable earnings
Comparable earnings in fourth quarter 2012 were $318 million or $0.45 per share compared to $365 million or $0.52 per share for the same period in 2011. Comparable earnings excluded net unrealized after-tax losses of $12 million ($17 million pre-tax) (2011 – $11 million after-tax gains; $13 million pre-tax) resulting from changes in the fair value of certain risk management activities.

Comparable earnings decreased $47 million or $0.07 per share in fourth quarter 2012 compared to the same period in 2011 and included the following:

•

decreased Canadian Natural Gas Pipelines net income primarily due to lower earnings from the Canadian Mainline which excluded incentive earnings and reflected a lower investment base;

•

decreased U.S. and International Natural Gas Pipelines comparable EBIT primarily due to lower revenues on Great Lakes due to uncontracted capacity and lower rates as well as lower revenues and higher costs on ANR;

•

decreased Oil Pipelines comparable EBIT which reflected increased business development activity and related costs;

•

decreased Energy comparable EBIT as a result of the Sundance A PPA force majeure as well as decreases and lower equity earnings from ASTC Power Partnership resulting from an unfavourable Sundance B PPA arbitration decision. These decreases were partially offset by higher contributions from Eastern Power due to incremental earnings from Cartier Wind as well as from U.S. Power due to higher generation volumes and realized power and capacity prices in New York; and

•

increased comparable interest income and other due to higher realized gains in 2012 compared to losses in 2011 on derivatives used to manage our exposure to foreign exchange rate fluctuations on U.S. dollar-denominated income.

Net income attributable to common shares
Our net income attributable to common shares was $306 million or $0.43 per share in fourth quarter 2012 compared to $376 million or $0.53 per share for the same period in 2011.

Highlights by business segment

Natural Gas Pipelines
Natural Gas Pipelines comparable EBIT was $454 million in fourth quarter 2012 compared to $481 million for the same period in 2011. This decrease was primarily due to lower earnings from the Canadian Mainline

2012 Management's discussion and analysis -- 93

which excluded incentive earnings and reflected a lower investment base and lower contributions from Great Lakes and ANR partially offset by higher earnings from the Alberta System.

Natural Gas Pipelines business development comparable EBITDA was $4 million in fourth quarter 2012 compared to $15 million for the same period in 2011. This decrease was primarily related to reduced activity in 2012 for the Alaska Pipeline Project.

Canadian Pipelines
Canadian Mainline's net income of $47 million in fourth quarter 2012 decreased $13 million compared to the same period in 2011. Canadian Mainline's net income for fourth quarter 2011 included incentive earnings earned under an incentive arrangement in the five-year tolls settlement that expired December 31, 2011. In the absence of a NEB decision with respect to the 2012-2013 tolls application, Canadian Mainline's 2012 quarterly results reflected the last approved ROE of 8.08 per cent on deemed common equity of 40 per cent and exclude incentive earnings. In addition, Canadian Mainline's fourth quarter 2012 net income decreased as a result of a lower average investment base compared to the prior year.

The Alberta System's net income of $55 million in fourth quarter 2012 increased by $4 million compared to the same period in 2011. The increase in 2012 net income was from a higher average investment base and was partially offset by lower incentive earnings.

Canadian Mainline's comparable EBITDA for fourth quarter 2012 of $250 million decreased $12 million compared to $262 million in the same period in 2011. The Alberta System's comparable EBITDA was $195 million for fourth quarter 2012 compared to $185 million in the same period in 2011. EBITDA from the Canadian Mainline and the Alberta System reflect the net income variances discussed above as well as variances in depreciation, financial charges and income taxes which are recovered in revenue on a flow-through basis and, therefore, do not impact net income.

U.S. Pipelines
ANR's comparable EBITDA in fourth quarter 2012 of US$63 million decreased US$10 million compared to the same period in 2011. The decrease was primarily due to lower transportation revenues and higher costs.

Great Lakes' comparable EBITDA for fourth quarter 2012 of US$11 million decreased US$9 million compared to the same period in 2011. The decrease was primarily the result of lower transportation revenue due to uncontracted capacity and lower rates compared to the same period in 2011.

Natural Gas Pipelines' business development comparable EBITDA loss from business development activities decreased $11 million for fourth quarter 2012 compared to the same period in 2011. The decrease in business development costs were primarily related to reduced activity in 2012 for the Alaska Pipeline Project.

Oil Pipelines
Oil Pipelines' comparable EBIT in fourth quarter 2012 was $136 million compared to $144 million for the same period in 2011. This decrease primarily reflected increased business development activity and related costs.

The Keystone Pipeline System's comparable EBITDA of $180 million in fourth quarter 2012 is consistent with the same period in 2011.

Energy
Energy's comparable EBIT was $154 million in fourth quarter 2012 compared to $187 million in fourth quarter 2011. This decrease was a result of the Sundance A PPA force majeure as well as lower equity earnings from ASTC Power Partnership resulting from an unfavourable Sundance B PPA arbitration decision. These decreases were partially offset by higher contributions from Eastern Power due to incremental earnings from new assets being placed in service at Cartier Wind as well as from U.S. Power due to higher generation volumes and realized power and capacity prices in New York.

94 -- TransCanada Corporation

Western Power's comparable EBITDA of $84 million in fourth quarter 2012 decreased $58 million compared to the same period in 2011 primarily due to the Sundance A PPA force majeure and decreased equity earnings from the ASTC Power Partnership as a result of the Sundance B PPA arbitration decision.

Western Power's power revenues of $158 million in fourth quarter 2012 decreased $61 million compared to the same period in 2011 primarily due to the Sundance A PPA force majeure.

Eastern Power's comparable EBITDA of $94 million in fourth quarter 2012 increased $12 million compared to the same period in 2011. The increase was primarily due to incremental Cartier Wind earnings from phases one and two of Gros-Morne which were placed in service in November 2011 and November 2012, respectively, and Montagne-Sèche which was placed in service in November 2011, partially offset by lower Bécancour contractual earnings.

Our loss from Bruce A increased $39 million to a loss of $54 million in fourth quarter 2012 compared to the same period in 2011. This increase was primarily due to lower volumes and higher operating costs resulting from higher outage days. These increases were partially offset by incremental volumes and earnings from Units 1 and 2 which were returned to service on October 22 and October 31, respectively.

Our equity income from Bruce B increased $32 million to $46 million in fourth quarter 2012 compared to the same period in 2011. The increase was primarily due to higher volumes and lower operating costs resulting from fewer planned outage days and lower lease expense. Provisions in the Bruce B lease agreement with Ontario Power Generation provide for a reduction in the annual lease expense if the annual average Ontario spot price for electricity is less than $30 per MWh which was the case in 2012.

U.S. Power's comparable EBITDA in fourth quarter 2012 was US$48 million compared to US$32 million in fourth quarter 2011. The increase was primarily due to higher generation volumes and higher realized power and capacity prices in New York, partially offset by lower earnings from the U.S. hydro facilities due to reduced water flows, as well as lower capacity prices and higher load serving costs in New England.

Natural Gas Storage's comparable EBITDA in fourth quarter 2012 was $20 million and was comparable to the same period in 2011.

2012 Management's discussion and analysis -- 95

Glossary

Units of measure

Bbl/d	Barrel(s) per day
Bcf	Billion cubic feet
Bcf/d	Billion cubic feet per day
GWh	Gigawatt hours
MMcf/d	Million cubic feet per day
MW	Megawatt(s)
MWh	Megawatt hours

General terms and terms related to our operations

bitumen	A thick, heavy oil that must be diluted to flow (also see: diluent). One of the components of the oil sands, along with sand, water and clay.
Canadian Restructuring Proposal	Canadian Mainline business and services restructuring proposal and 2012 and 2013 Mainline final tolls application
cogeneration facilities	Facilities that produce both electricity and useful heat at the same time.
diluent	A thinning agent made up of organic compounds. Used to dilute bitumen so it can be transported through pipelines.
FIT	Feed-in tariff
force majeure	Unforeseeable circumstances that prevent a party to a contract from fulfilling it.
fracking	Hydraulic fracturing. A method of extracting natural gas from shale rock.
GHG	Greenhouse gas
HSE	Health, safety and environment
LNG	Liquefied natural gas
MET	Mitigation exemption tests
OM&A	Operating, maintenance and administration
PJM Interconnection area (PJM)	A regional transmission organization that coordinates the movement of wholesale electricity in all or parts of 13 states and the District of Columbia
PPA	Power purchase arrangement
WCSB	Western Canada Sedimentary Basin

Accounting terms

AFUDC	Allowance for funds used during construction
AOCI	Accumulated other comprehensive (loss)/income
ARO	Asset retirement obligations
ASU	Accounting Standards Updatepension
DRP	Dividend reinvestment plan
EBIT	Earnings before interest and taxes
EBITDA	Earnings before interest, taxes, depreciation and amortization
FASB	Financial Accounting Standards Board (U.S.)
OCI	Other comprehensive (loss)/income
RRA	Rate-regulated accounting
ROE	Rate of return on common equity
U.S. GAAP	U.S. generally accepted accounting principles

Government and regulatory bodies

CFE	Comisión Federal de Electricidad (Mexico)
CRE	Comisión Reguladora de Energia, or Energy Regulatory Commission (Mexico)
DOS	Department of State (U.S.)
FERC	Federal Energy Regulatory Commission (U.S.)
IEA	International Energy Agency
ISO	Independent System Operator
LMCI	Land Matters Consultation Initiative (Canada)
NDEQ	Nebraska Department of Environmental Quality (U.S.)
NEB	National Energy Board (Canada)
OPA	Ontario Power Authority (Canada)
RGGI	Regional Greenhouse Gas Initiative (northeastern U.S.)
SEC	U.S. Securities and Exchange Commission

96 -- TransCanada Corporation

Report of management

The consolidated financial statements and Management's Discussion and Analysis (MD&A) included in this Annual Report are the responsibility of the management of TransCanada Corporation (TransCanada or the Company) and have been approved by the Board of Directors of the Company. The consolidated financial statements have been prepared by management in accordance with United States (U.S.) generally accepted accounting principles (U.S. GAAP) and include amounts that are based on estimates and judgements. The MD&A is based on the Company's financial results. It compares the Company's financial and operating performance in 2012 to that in 2011, and highlights significant changes between 2011 and 2010. The MD&A should be read in conjunction with the consolidated financial statements and accompanying notes. Financial information contained elsewhere in this Annual Report is consistent with the consolidated financial statements.

Management is responsible for establishing and maintaining adequate internal control over financial reporting for the Company. Management has designed and maintains a system of internal control over financial reporting, including a program of internal audits to carry out its responsibility. Management believes these controls provide reasonable assurance that financial records are reliable and form a proper basis for the preparation of financial statements. The internal controls over financial reporting include management's communication to employees of policies that govern ethical business conduct.

Under the supervision and with the participation of the President and Chief Executive Officer and the Chief Financial Officer, management conducted an evaluation of the effectiveness of its internal controls over financial reporting based on the framework in Internal Control – Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission. Management concluded, based on its evaluation, that internal control over financial reporting are effective as of December 31, 2012, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external reporting purposes.

The Board of Directors is responsible for reviewing and approving the financial statements and MD&A and ensuring that management fulfills its responsibilities for financial reporting and internal controls. The Board of Directors carries out these responsibilities primarily through the Audit Committee, which consists of independent, non-management directors. The Audit Committee meets with management at least five times a year and meets independently with internal and external auditors and as a group to review any significant accounting, internal control and auditing matters in accordance with the terms of the Charter of the Audit Committee, which is set out in the Annual Information Form. The Audit Committee's responsibilities include overseeing management's performance in carrying out its financial reporting responsibilities and reviewing the Annual Report, including the consolidated financial statements and MD&A, before these documents are submitted to the Board of Directors for approval. The internal and independent external auditors have access to the Audit Committee without the requirement to obtain prior management approval.

The Audit Committee approves the terms of engagement of the independent external auditors and reviews the annual audit plan, the Auditors' Report and the results of the audit. It also recommends to the Board of Directors the firm of external auditors to be appointed by the shareholders.

The shareholders have appointed KPMG LLP as independent external auditors to express an opinion as to whether the consolidated financial statements present fairly, in all material respects, the Company's consolidated financial position, results of operations and cash flows in accordance with U.S. GAAP. The report of KPMG LLP outlines the scope of its examination and its opinion on the consolidated financial statements.

Russell K. Girling	Donald R. Marchand
President and Chief Executive Officer	Executive Vice-President and Chief Financial Officer
February 11, 2013

2012 Consolidated financial statements -- 97

Independent Auditors' Report of Registered Public Accounting Firm

TO THE SHAREHOLDERS OF TRANSCANADA CORPORATION
We have audited the accompanying consolidated financial statements of TransCanada Corporation, which comprise the consolidated balance sheets as at December 31, 2012 and December 31, 2011, the consolidated statements of income, comprehensive income, accumulated other comprehensive loss, equity and cash flows for each of the years in the three-year period ended December 31, 2012, and notes, comprising a summary of significant accounting policies and other explanatory information.

MANAGEMENT'S RESPONSIBILITY FOR THE CONSOLIDATED FINANCIAL STATEMENTS
Management is responsible for the preparation and fair presentation of these consolidated financial statements in accordance with US generally accepted accounting principles, and for such internal control as management determines is necessary to enable the preparation of consolidated financial statements that are free from material misstatement, whether due to fraud or error.

AUDITORS' RESPONSIBILITY
Our responsibility is to express an opinion on these consolidated financial statements based on our audits. We conducted our audits in accordance with Canadian generally accepted auditing standards and the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we comply with ethical requirements and plan and perform the audit to obtain reasonable assurance about whether the consolidated financial statements are free from material misstatement.

An audit involves performing procedures to obtain audit evidence about the amounts and disclosures in the consolidated financial statements. The procedures selected depend on our judgment, including the assessment of the risks of material misstatement of the consolidated financial statements, whether due to fraud or error. In making those risk assessments, we consider internal control relevant to the entity's preparation and fair presentation of the consolidated financial statements in order to design audit procedures that are appropriate in the circumstances. An audit also includes evaluating the appropriateness of accounting policies used and the reasonableness of accounting estimates made by management, as well as evaluating the overall presentation of the consolidated financial statements.

We believe that the audit evidence we have obtained in our audits is sufficient and appropriate to provide a basis for our audit opinion.

OPINION
In our opinion, the consolidated financial statements present fairly, in all material respects, the consolidated financial position of TransCanada Corporation as at December 31, 2012 and December 31, 2011, and its consolidated results of operations and its consolidated cash flows for each of the years in the three-year period ended December 31, 2012 in accordance with US generally accepted accounting principles.

OTHER MATTER
We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), TransCanada Corporation's internal control over financial reporting as of December 31, 2012, based on the criteria established in Internal Control – Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO), and our report dated February 11, 2013 expressed an unmodified (unqualified) opinion on the effectiveness of TransCanada Corporation's internal control over financial reporting.

Chartered Accountants
Calgary, Canada

February 11, 2013

98 -- TransCanada Corporation

Report of Independent Registered Public Accounting Firm

TO THE SHAREHOLDERS OF TRANSCANADA CORPORATION
We have audited TransCanada Corporation's internal control over financial reporting as of December 31, 2012, based on criteria established in Internal Control – Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO). TransCanada Corporation's management is responsible for maintaining effective internal control over financial reporting and for its assessment of the effectiveness of internal control over financial reporting, included in the accompanying Management's Report on Internal Control over Financial Reporting. Our responsibility is to express an opinion on the Company's internal control over financial reporting based on our audit.

We conducted our audit in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects. Our audit included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, and testing and evaluating the design and operating effectiveness of internal control based on the assessed risk. Our audit also included performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.

A company's internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company's internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company's assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

In our opinion, TransCanada Corporation maintained, in all material respects, effective internal control over financial reporting as of December 31, 2012, based on criteria established in Internal Control – Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO).

We also have audited, in accordance with Canadian generally accepted auditing standards and the standards of the Public Company Accounting Oversight Board (United States), the consolidated balance sheets of TransCanada Corporation as of December 31, 2012 and 2011, and the related consolidated statements of income, comprehensive income, accumulated other comprehensive loss, equity and cash flows for each of the years in the three-year period ended December 31, 2012, and our report dated February 11, 2013 expressed an unmodified (unqualified) opinion on those consolidated financial statements.

Chartered Accountants
Calgary, Canada

February 11, 2013

2012 Consolidated financial statements -- 99

Consolidated statement of income

year ended December 31 (millions of Canadian dollars except per share amounts)	2012		2011		2010
Revenues
Natural Gas Pipelines	4,264		4,244		4,122
Oil Pipelines	1,039		827		–
Energy	2,704		2,768		2,730
	8,007		7,839		6,852
Income from Equity Investments(Note 9)	257		415		453
Operating and Other Expenses
Plant operating costs and other	2,577		2,358		2,069
Commodity purchases resold	1,049		991		1,178
Property taxes	434		410		365
Depreciation and amortization	1,375		1,328		1,160
Valuation provision for MGP (Note 10)	–		–		146
	5,435		5,087		4,918
Financial Charges/(Income)
Interest expense (Note 14)	976		937		701
Interest income and other	(85	)	(55	)	(94	)
	891		882		607
Income before Income Taxes	1,938		2,285		1,780
Income Tax Expense/(Recovery)(Note 15)
Current	181		210		(139	)
Deferred	285		365		526
	466		575		387
Net Income	1,472		1,710		1,393
Net Income Attributable to Non-Controlling Interests (Note 17)	118		129		115
Net Income Attributable to Controlling Interests	1,354		1,581		1,278
Preferred Share Dividends (Note 19)	55		55		45
Net Income Attributable to Common Shares	1,299		1,526		1,233
Net Income per Common Share(Note 18)
Basic	$1.84		$2.17		$1.79
Diluted	$1.84		$2.17		$1.78
Dividends Declared per Common Share	$1.76		$1.68		$1.60
Weighted Average Number of Common Shares(millions)
Basic	705		702		691
Diluted	706		703		692

The accompanying notes to the consolidated financial statements are an integral part of these statements.

100 -- TransCanada Corporation

Consolidated statement of comprehensive income

year ended December 31 (millions of Canadian dollars)	2012		2011		2010
Net Income	1,472		1,710		1,393
Other Comprehensive Income/(Loss), Net of Income Taxes
Foreign currency translation gains and losses on investments in foreign operations1	(129	)	137		(223	)
Change in fair value of net investment hedges2	44		(73	)	89
Change in fair value of cash flow hedges3	48		(212	)	(169	)
Reclassification to Net Income of gains and losses on cash flow hedges4	138		147		53
Unrealized actuarial gains and losses on pension and other post-retirement benefit plans5	(73	)	(89	)	(12	)
Reclassification to Net Income of actuarial gains and losses and prior service costs on pension and other post-retirement benefit plans6	22		10		5
Other Comprehensive Loss on equity investments7	(70	)	(91	)	(151	)
Other Comprehensive Loss	(20	)	(171	)	(408	)
Comprehensive Income	1,452		1,539		985
Comprehensive Income Attributable to Non-Controlling Interests	97		164		78
Comprehensive Income Attributable to Controlling Interests	1,355		1,375		907
Preferred Share Dividends	55		55		45
Comprehensive Income Attributable to Common Shares	1,300		1,320		862

1

Net of income tax expense of $32 million in 2012 (2011 – $29 million recovery; 2010 – $65 million expense).

2

Net of income tax expense of $15 million in 2012 (2011 – $28 million recovery; 2010 – $37 million expense).

3

Net of income tax expense of $13 million in 2012 (2011 – $106 million recovery; 2010 – $82 million recovery).

4

Net of income tax expense of $81 million in 2012 (2011 – $77 million expense; 2010 – $28 million expense).

5

Net of income tax recovery of $31 million in 2012 (2011 – $30 million recovery; 2010 – $7 million recovery).

6

Net of income tax expense of nil in 2012 (2011 – $3 million expense; 2010 – $3 million expense).

7

Primarily related to reclassification to Net Income of actuarial losses on pension and other
post-retirement benefit plans, reclassification to Net Income of gains and losses on cash flow hedges,
offset by change in gains and losses on cash flow hedges, net of income tax recovery of $23 million in 2012
(2011 – $3 million recovery; 2010 – $69 million recovery).

The accompanying notes to the consolidated financial statements are an integral part of these statements.

2012 Consolidated financial statements -- 101

Consolidated statement of cash flows

year ended December 31 (millions of Canadian dollars)	2012		2011		2010
Cash Generated from Operations
Net income	1,472		1,710		1,393
Depreciation and amortization	1,375		1,328		1,160
Deferred income taxes (Note 15)	285		365		526
Income from equity investments (Note 9)	(257	)	(415	)	(453	)
Distributed earnings received from equity investments (Note 9)	376		393		446
Employee post-retirement benefits funding lower than/(in excess of) expense (Note 20)	9		(2	)	(50	)
Valuation provision for MGP (Note 10)	–		–		146
Other	24		72		(7	)
Decrease/(increase) in operating working capital (Note 22)	287		235		(285	)
Net cash provided by operations	3,571		3,686		2,876
Investing Activities
Capital expenditures (Note 4)	(2,595	)	(2,513	)	(4,376	)
Equity investments	(652	)	(633	)	(597	)
Acquisitions, net of cash acquired (Note 23)	(214	)	–		–
Deferred amounts and other	205		92		(323	)
Net cash used in investing activities	(3,256	)	(3,054	)	(5,296	)
Financing Activities
Dividends on common and preferred shares (Notes 18 and 19)	(1,281	)	(1,016	)	(754	)
Distributions paid to non-controlling interests	(135	)	(131	)	(112	)
Notes payable issued/(repaid), net	449		(224	)	472
Long-term debt issued, net of issue costs	1,491		1,622		2,371
Repayment of long-term debt	(980	)	(1,272	)	(494	)
Common shares issued, net of issue costs	53		58		26
Preferred shares issued, net of issue costs	–		–		679
Partnership units issued, net of issue costs (Note 23)	–		321		–
Net cash (used in)/provided by financing activities	(403	)	(642	)	2,188
Effect of Foreign Exchange Rate Changes on Cash and Cash Equivalents	(15	)	4		(7	)
Decrease in Cash and Cash Equivalents	(103	)	(6	)	(239	)
Cash and Cash Equivalents
Beginning of year	654		660		899
Cash and Cash Equivalents
End of year	551		654		660

The accompanying notes to the consolidated financial statements are an integral part of these statements.

102 -- TransCanada Corporation

Consolidated balance sheet

at December 31 (millions of Canadian dollars)		2012		2011
ASSETS
Current Assets
Cash and cash equivalents		551		654
Accounts receivable		1,052		1,094
Inventories		224		248
Other (Note 5)		997		1,114
		2,824		3,110
Plant, Property and Equipment (Note 6)		33,713		32,467
Equity Investments (Note 9)		5,366		5,077
Goodwill (Note 7)		3,458		3,534
Regulatory Assets (Note 8)		1,629		1,684
Intangible and Other Assets (Note 10)		1,343		1,466
		48,333		47,338
LIABILITIES
Current Liabilities
Notes payable (Note 11)		2,275		1,863
Accounts payable and other (Note 12)		2,344		2,359
Accrued interest		368		365
Current portion of long-term debt (Note 14)		894		935
		5,881		5,522
Regulatory Liabilities (Note 8)		268		297
Other Long-Term Liabilities (Note 13)		882		929
Deferred Income Tax Liabilities (Note 15)		3,953		3,591
Long-Term Debt (Note 14)		18,019		17,724
Junior Subordinated Notes (Note 16)		994		1,016
		29,997		29,079
EQUITY
Common shares, no par value (Note 18)		12,069		12,011
	Issued and outstanding: December 31, 2012 – 705 million shares
	December 31, 2011 – 704 million shares
Preferred shares (Note 19)		1,224		1,224
Additional paid-in capital		379		380
Retained earnings		4,687		4,628
Accumulated other comprehensive loss		(1,448	)	(1,449	)
Controlling interests		16,911		16,794
Non-controlling interests (Note 17)		1,425		1,465
		18,336		18,259
		48,333		47,338

Commitments, Contingencies and Guarantees (Note 24)

Subsequent Event(Note 25)

The accompanying notes to the consolidated financial statements are an integral part of these statements.

On behalf of the Board:

Russell K. Girling Director	Kevin E. Benson Director

2012 Consolidated financial statements -- 103

Consolidated statement of accumulated other comprehensive loss

(millions of Canadian dollars)	Currency Translation Adjustments		Cash Flow Hedges and Other		Pension and Other Post-retirement Plan Adjustments		Total
Balance at January 1, 2010	(592	)	(40	)	(240	)	(872	)
Foreign currency translation gains and losses on investments in foreign operations1	(180	)	–		–		(180	)
Change in fair value of net investment hedges2	89		–		–		89
Change in fair value of cash flow hedges3	–		(165	)	–		(165	)
Reclassification to Net Income of gains and losses on cash flow hedges4, 5	–		43		–		43
Unrealized actuarial gains and losses on pension and other post-retirement benefit plans6	–		–		(12	)	(12	)
Reclassification to Net Income of actuarial gains and losses and prior service costs on pension and other post-retirement benefit plans7	–		–		5		5
Other Comprehensive Loss on equity investments8	–		(32	)	(119	)	(151	)
Balance at December 31, 2010	(683	)	(194	)	(366	)	(1,243	)
Foreign currency translation gains and losses on investments in foreign operations1	113		–		–		113
Change in fair value of net investment hedges2	(73	)	–		–		(73	)
Change in fair value of cash flow hedges3	–		(213	)	–		(213	)
Reclassification to Net Income of gains and losses on cash flow hedges4, 5	–		137		–		137
Unrealized actuarial gains and losses on pension and other post-retirement benefit plans6	–		–		(89	)	(89	)
Reclassification to Net Income of actuarial gains and losses and prior service costs on pension and other post-retirement benefit plans7	–		–		10		10
Other Comprehensive Loss on equity investments8	–		(11	)	(80	)	(91	)
Balance at December 31, 2011	(643	)	(281	)	(525	)	(1,449	)
Foreign currency translation gains and losses on investments in foreign operations1	(108	)	–		–		(108	)
Change in fair value of net investment hedges2	44		–		–		44
Change in fair value of cash flow hedges3	–		48		–		48
Reclassification to Net Income of gains and losses on cash flow hedges4, 5	–		138		–		138
Unrealized actuarial gains and losses on pension and other post-retirement benefit plans6	–		–		(73	)	(73	)
Reclassification to Net Income of actuarial gains and losses and prior service costs on pension and other post-retirement benefit plans7	–		–		22		22
Other Comprehensive Loss on equity investments8	–		(15	)	(55	)	(70	)
Balance at December 31, 2012	(707	)	(110	)	(631	)	(1,448	)

1

Net of income tax expense of $32 million and non-controlling interest losses of $21 million in 2012 (2011 – $29 million recovery, $24 million gain; 2010 – $65 million expense, $43 million loss).

2

Net of income tax expense of $15 million in 2012 (2011 – $28 million recovery; 2010 – $37 million expense).

3

Net of income tax expense of $13 million and non-controlling interest gains of nil in 2012 (2011 – $106 million recovery, $1 million gain; 2010 – $82 million recovery, $4 million loss).

4

Net of income tax expense of $81 million and non-controlling interest gains of nil in 2012 (2011 – $77 million expense, $10 million gain; 2010 – $28 million expense, $10 million gain).

5

Losses related to cash flow hedges reported in AOCI and expected to be reclassified to Net Income in the next 12 months are estimated to be $41 million ($24 million, net of tax). These estimates
assume constant commodity prices, interest rates and foreign exchange rates over time, however, the amounts reclassified will vary based on the actual value of these factors at the date of settlement.

6

Net of income tax recovery of $31 million in 2012 (2011 – $30 million recovery; 2010 – $7 million recovery).

7

Net of income tax expense of nil in 2012 (2011 – $3 million expense; 2010 – $3 million expense).

8

Primarily related to reclassification to Net Income of actuarial losses on pension and other post-retirement benefit plans, reclassification to Net Income of gains and losses on cash flow hedges,
offset by change in gains and losses on cash flow hedges, net of income tax recovery of $23 million in 2012 (2011 – $3 million recovery; 2010 – $69 million recovery).

The accompanying notes to the consolidated financial statements are an integral part of these statements.

104 -- TransCanada Corporation

Consolidated statement of equity

year ended December 31 (millions of Canadian dollars)		2012		2011		2010
Common Shares
Balance at beginning of year		12,011		11,745		11,338
Shares issued under dividend reinvestment plan (Note 18)		–		202		378
Shares issued on exercise of stock options (Note 18)		58		64		29
Balance at end of year		12,069		12,011		11,745
Preferred Shares
Balance at beginning of year		1,224		1,224		539
Shares issued under public offering, net of issue costs		–		–		685
Balance at end of year		1,224		1,224		1,224
Additional Paid-In Capital
Balance at beginning of year		380		349		346
Issuance of stock options, net of exercises		(1	)	1		3
Dilution gain from TC PipeLines, LP units issued (Note 23)		–		30		–
Balance at end of year		379		380		349
Retained Earnings
Balance at beginning of year		4,628		4,282		4,158
Net income attributable to controlling interests		1,354		1,581		1,278
Common share dividends		(1,240	)	(1,180	)	(1,109	)
Preferred share dividends		(55	)	(55	)	(45	)
Balance at end of year		4,687		4,628		4,282
Accumulated Other Comprehensive Loss
Balance at beginning of year		(1,449	)	(1,243	)	(872	)
Other comprehensive income/(loss)		1		(206	)	(371	)
Balance at end of year		(1,448	)	(1,449	)	(1,243	)
Equity Attributable to Controlling Interests		16,911		16,794		16,357
Equity Attributable to Non-Controlling Interests
Balance at beginning of year		1,465		1,157		1,174
Net income attributable to non-controlling interests
	TC PipeLines, LP	91		101		87
	Preferred share dividends of TCPL	22		22		22
	Portland	5		6		6
Other comprehensive (loss)/income attributable to non-controlling interests		(21	)	35		(37	)
Sale of TC PipeLines, LP units
	Proceeds, net of issue costs	–		321		–
	Decrease in TransCanada's ownership	–		(50	)	–
Distributions declared to non-controlling interests		(135	)	(131	)	(112	)
Foreign exchange and other		(2	)	4		17
Balance at end of year		1,425		1,465		1,157
Total Equity		18,336		18,259		17,514

The accompanying notes to the consolidated financial statements are an integral part of these statements.

2012 Consolidated financial statements -- 105

Notes to consolidated financial statements

1.  DESCRIPTION OF TRANSCANADA'S BUSINESS

TransCanada Corporation (TransCanada or the Company) is a leading North American energy company which operates in three business segments, Natural Gas Pipelines, Oil Pipelines and Energy, each of which offers different products and services.

Natural Gas Pipelines
The Natural Gas Pipelines segment consists of the Company's investments in regulated natural gas pipelines and regulated natural gas storage facilities. Through its Natural Gas Pipelines segment, TransCanada owns and operates:

•

a natural gas transmission system extending from the Alberta/Saskatchewan border east into Québec (Canadian Mainline);

•

a natural gas transmission system in Alberta and northeastern British Columbia (B.C.) (Alberta System);

•

a natural gas transmission system extending from producing fields primarily located in Texas, Oklahoma, the Gulf of Mexico and Louisiana to markets primarily located in Wisconsin, Michigan, Illinois, Ohio and Indiana, and includes regulated natural gas storage facilities in Michigan (ANR);

•

a natural gas transmission system extending from central Alberta to the B.C./Idaho border and to the Saskatchewan/Montana border (Foothills);

•

natural gas transmission systems in Alberta that supply natural gas to the oil sands region of northern Alberta and to a petrochemical complex at Joffre, Alberta (Ventures LP);

•

a natural gas transmission system in Mexico extending from Naranjos, Veracruz to Tamazunchale, San Luis Potosi (Tamazunchale); and

•

a natural gas transmission system in Mexico extending from Manzanillo, Colima to Guadalajara, Jalisco (Guadalajara).

Through its Natural Gas Pipelines segment, TransCanada operates and has ownership interests in natural gas pipeline systems as follows:

•

a 53.6 per cent direct ownership interest in a natural gas transmission system that connects to the Canadian Mainline and serves markets in eastern Canada and the northeastern and midwestern United States (U.S.) (Great Lakes);

•

a 75 per cent direct ownership interest in a natural gas transmission system extending from the B.C./Idaho border to the Oregon/California border (GTN);

•

a 75 per cent direct ownership interest in a natural gas transmission system extending from the Powder River Basin in Wyoming to Northern Border in North Dakota (Bison);

•

a 61.7 per cent interest in a natural gas transmission system that extends from a point near East Hereford, Québec, to the northeastern U.S. (Portland);

•

a 50 per cent interest in a natural gas transmission system that connects with the Canadian Mainline near the Québec/Ontario border and transports natural gas to markets in Québec and to the Portland system (TQM); and

•

a 33.3 per cent controlling interest in TC PipeLines, LP, which has the following ownership interests in pipelines operated by TransCanada:

•

a 46.4 per cent interest in Great Lakes, in which TransCanada has a combined 69 per cent effective ownership interest through TC PipeLines, LP and a direct interest described above;

•

a 50 per cent interest in a natural gas transmission system extending from a point near Monchy, Saskatchewan, to the U.S. Midwest (Northern Border), in which TransCanada has a 16.7 per cent effective ownership interest through TC PipeLines, LP;

•

a 25 per cent interest in GTN, in which TransCanada has a combined 83.3 per cent effective ownership interest through TC PipeLines, LP and a direct interest described above;

106 -- TransCanada Corporation

•

a 25 per cent interest in Bison, in which TransCanada has a combined 83.3 per cent effective ownership interest through TC PipeLines, LP and a direct interest described above;


•

a 100 per cent interest in a natural gas transmission system extending from Arizona to Baja California at the Mexico/California border (North Baja), in which TransCanada has a 33.3 per cent effective ownership interest through TC PipeLines, LP; and


•

a 100 per cent interest in a natural gas transmission system extending from Malin, Oregon, to Wadsworth, Nevada (Tuscarora), in which TransCanada has a 33.3 per cent effective ownership interest through TC PipeLines, LP.

TransCanada does not operate but has ownership interests in natural gas pipelines and natural gas marketing activities as follows:

•

a 44.5 per cent interest in a natural gas transmission system that connects with the Canadian Mainline near Waddington, New York, and delivers natural gas to customers in the northeastern U.S. (Iroquois);

•

a 46.5 per cent interest in a natural gas transmission system extending from Mariquita to Cali in Colombia (TransGas); and

•

a 30 per cent interest in a natural gas transmission system extending from Loma de la Lata, Argentina to Concepción, Chile (Gas Pacifico), and in an industrial natural gas marketing company based in Concepción (INNERGY).

TransCanada is currently constructing natural gas pipeline systems as follows:

•

an extension to the Tamazunchale pipeline, extending the natural gas transmission system from Tamazunchale, San Luis Potosi to El Sauz, Queretaro;

•

a natural gas transmission system that will transport natural gas from Chihuahua to Topolobampo, Mexico (Topolobampo); and

•

a natural gas transmission system that will transport natural gas from El Oro to Mazatlan, Mexico (Mazatlan).

TransCanada is currently developing the following natural gas pipeline systems:

•

the proposed Coastal GasLink project consists of a natural gas transmission system that will transport natural gas from the Montney gas-producing region near Dawson Creek, B.C. to a liquefied natural gas export facility near Kitimat, B.C.; and

•

the proposed Prince Rupert Gas Transmission Project consists of a pipeline to deliver natural gas from the Fort St. John area of B.C. to the proposed Pacific Northwest LNG facility at Port Edward near Prince Rupert, B.C.

Oil Pipelines
The Oil Pipelines segment consists of a wholly owned and operated crude oil pipeline system which connects Alberta crude oil supplies to U.S. refining markets in Illinois and Oklahoma (Keystone Pipeline System).

TransCanada is currently constructing oil pipeline infrastructure as follows:

•

a crude oil pipeline to connect the crude oil hub at Cushing, Oklahoma to the U.S. Gulf Coast refining market (Gulf Coast Project);

•

the Cushing Marketlink receipt facilities that will transport crude oil supply from the Permian Basin in western Texas to the U.S. Gulf Coast on facilities that form part of the Gulf Coast Project; and

•

a crude oil terminal to be located at Hardisty, Alberta (Keystone Hardisty Terminal) that will provide Western Canadian producers with new batch accumulation tankage and pipeline infrastructure and access to the Keystone Pipeline System.

TransCanada is currently developing oil pipeline infrastructure as follows:

•

a new 1,897 km (1,179 mile) crude oil pipeline from Hardisty, Alberta to Steele City, Nebraska (Keystone XL), subject to regulatory approval;

•

the Bakken Marketlink project that will transport crude oil supply from the Williston Basin in North Dakota and Montana to Cushing, Oklahoma on facilities that form part of Keystone XL;

2012 Consolidated financial statements -- 107

•

the proposed Northern Courier Pipeline, a 90 km (54 mile) pipeline system to service the Fort Hills mine site and transport bitumen and diluent between the Fort Hills mine site and the proposed Voyageur Upgrader, north of Fort McMurray, Alberta. The Company has been selected by the Fort Hills Energy Limited Partnership to design, build, own and operate the proposed pipeline; and

•

the Grand Rapids Pipeline in northern Alberta, which includes both crude oil and diluent lines to transport volumes approximately 500 km (300 mile) between the producing area northwest of Fort McMurray and the Edmonton/Heartland region. The Company has entered into a joint venture agreement with Phoenix Energy Holdings Limited to develop the pipeline.

Energy
The Energy segment primarily consists of the Company's investments in electrical power generation plants and non-regulated natural gas storage facilities. Through its Energy segment, the Company owns and operates:

•

a natural gas and oil-fired generating facility in Queens, New York, consisting of multiple units employing steam turbine, combined-cycle and combustion turbine technology (Ravenswood);

•

a natural gas-fired, combined-cycle power plant in Halton Hills, Ontario (Halton Hills);

•

hydroelectric generation assets located in New Hampshire, Vermont and Massachusetts (TC Hydro);

•

a natural gas-fired peaking facility located near Phoenix, Arizona (Coolidge);

•

a natural gas-fired, combined-cycle plant in Burrillville, Rhode Island (Ocean State Power);

•

a natural gas-fired cogeneration plant near Trois-Rivières, Québec (Bécancour);

•

natural gas-fired cogeneration plants in Alberta at Carseland, Redwater, Bear Creek and MacKay River;

•

a wind farm located in Kibby and Skinner townships in northwestern Franklin County, Maine (Kibby Wind);

•

a natural gas-fired cogeneration plant near Saint John, New Brunswick (Grandview);

•

a waste-heat fuelled power plant and the Cancarb thermal carbon black facility in Medicine Hat, Alberta (Cancarb);

•

a natural gas storage facility near Edson, Alberta (Edson); and

•

an underground natural gas storage facility near Crossfield, Alberta (CrossAlta).

TransCanada does not operate but has ownership interests in power generation plants as follows:

•

a 48.9 per cent partnership interest and a 31.6 per cent partnership interest in the nuclear power generation facilities of Bruce A and Bruce B (collectively Bruce Power), respectively, located near Tiverton, Ontario;

•

a 62 per cent interest in the Baie-des-Sables, Anse-à-Valleau, Carleton, Montagne-Sèche and Gros-Morne wind farms in Gaspé, Québec (Cartier Wind); and

•

a 50 per cent interest in a natural gas-fired, combined-cycle plant in Toronto, Ontario (Portlands Energy).

TransCanada has long-term power purchase arrangements (PPA) in place for:

•

a 100 per cent interest in the Sheerness power facility near Hanna, Alberta, which has 756 megawatts (MW) of generating capacity;

•

a 100 per cent interest in the Sundance A power facilities near Wabamun, Alberta, which has 560 MW of generating capacity; and

•

a 50 per cent interest in ASTC Power Partnership, which has a PPA in place for 706 MW of generating capacity from the Sundance B power facilities near Wabamun, Alberta.

TransCanada is currently constructing a 900 MW natural gas-fired power plant at Ontario Power Generation's Lennox site in Greater Napanee, Ontario.

TransCanada also has agreed to purchase nine Ontario solar projects in 2013 and 2014 with a combined capacity of 86 MW.

108 -- TransCanada Corporation

2.  ACCOUNTING POLICIES

The Company's consolidated financial statements have been prepared by management in accordance with United States generally accepted accounting principles (U.S. GAAP). Amounts are stated in Canadian dollars unless otherwise indicated. Comparative figures, which were previously presented in accordance with Canadian generally accepted accounting principles as defined in Part V of the Canadian Institute of Chartered Accountants Handbook, have been adjusted as necessary to be compliant with the Company's policies under U.S. GAAP. The amounts adjusted at December 31, 2011 and December 31, 2010 in these consolidated financial statements are the same as those reported in Note 25 of TransCanada's 2011 audited Consolidated Financial Statements included in TransCanada's 2011 Annual Report.

Basis of Presentation
The consolidated financial statements include the accounts of TransCanada and its subsidiaries. The Company consolidates its interest in entities over which it is able to exercise control. To the extent there are interests owned by other parties, these interests are included in Non-Controlling Interests. TransCanada uses the equity method of accounting for joint ventures in which the Company is able to exercise joint control and for investments in which the Company is able to exercise significant influence. TransCanada records its proportionate share of undivided interests in certain assets.

Use of Estimates and Judgements
In preparing these financial statements, TransCanada is required to make estimates and assumptions that affect both the amount and timing of recording assets, liabilities, revenues and expenses since the determination of these items may be dependent on future events. The Company uses the most current information available and exercises careful judgement in making these estimates and assumptions. In the opinion of management, these consolidated financial statements have been properly prepared within reasonable limits of materiality and within the framework of the Company's significant accounting policies summarized below.

Regulation
In Canada, regulated natural gas pipelines and oil pipelines are subject to the authority of the National Energy Board (NEB) of Canada. In the U.S., natural gas pipelines, oil pipelines and regulated storage assets are subject to the authority of the U.S. Federal Energy Regulatory Commission (FERC). In Mexico, natural gas pipelines are subject to the authority of the Energy Regulatory Commission of Mexico. The Company's Canadian and U.S. natural gas transmission operations are regulated with respect to construction, operations and the determination of tolls. Rate-regulated accounting (RRA) standards may impact the timing of the recognition of certain revenues and expenses in TransCanada's rate-regulated businesses which may differ from that otherwise expected in non-rate-regulated businesses to appropriately reflect the economic impact of the regulators' decisions regarding revenues and tolls. RRA is not applicable to the Keystone Pipeline System and the Company's Mexican natural gas pipelines and, as a result, the regulators' decisions regarding operations and tolls on these pipelines generally do not have an impact on timing of recognition of revenues and expenses.

Revenue Recognition

Natural Gas and Oil Pipelines
Revenues from the Company's natural gas and oil pipelines, with the exception of Canadian natural gas pipelines which are subject to rate regulation, are generated from contractual arrangements for committed capacity and from the transportation of natural gas or oil. Revenues earned from firm contracted capacity arrangements are recognized ratably over the contract period regardless of the amount of natural gas or oil that is transported. Transportation revenues for interruptible or volumetric-based services are recognized when physical deliveries of natural gas or oil are made. The U.S. natural gas pipelines are subject to FERC regulations

2012 Consolidated financial statements -- 109

and, as a result, revenues collected may be subject to refund during a rate proceeding. Allowances for these potential refunds are recognized when appropriate.

Revenues from Canadian natural gas pipelines subject to rate regulation are recognized in accordance with decisions made by the NEB. The Company's Canadian natural gas pipeline rates are based on revenue requirements designed to recover the costs of providing natural gas transportation services, which include an appropriate return of and return on capital, as approved by the NEB. The Company's Canadian natural gas pipelines are not subject to risks related to variances in revenues and most costs. These variances are generally subject to deferral treatment and are recovered or refunded in future rates. The Company's Canadian natural gas pipelines are periodically subject to incentive mechanisms, as negotiated with shippers and approved by the NEB. These mechanisms can result in the Company recognizing more or less revenue than required to recover the costs that are subject to incentives. Revenues are recognized on firm contracted capacity ratably over the contract period. Revenues from interruptible or volumetric-based services are recorded when physical delivery is made. Revenues recognized prior to an NEB decision on rates for that period reflect the NEB's last approved rate of return on common equity (ROE) assumptions. Adjustments to revenue are recorded when the NEB decision is received.

Revenues from the Company's regulated natural gas storage services are recognized ratably over the contract period for firm committed capacity regardless of the amount of natural gas that is stored and when gas is injected or withdrawn for interruptible or volumetric-based services. The Company does not take ownership of the gas or oil that it transports or stores for others.

Energy

Power
Revenues from the Company's Energy business are primarily derived from the sale of electricity and from the sale of unutilized natural gas fuel, which are recorded at the time of delivery. Revenues also include capacity payments and ancillary services, as well as gains and losses resulting from the use of commodity derivative contracts. The accounting for derivative contracts is described in the Derivative Instruments and Hedging Activities section of this note.

Natural Gas Storage
Revenues earned from providing non-regulated natural gas storage services are recognized in accordance with the terms of the natural gas storage contracts, which is generally over the term of the contract. Revenues earned on the sale of proprietary natural gas are recorded in the month of delivery. Derivative contracts for the purchase or sale of natural gas are recorded at fair value with changes in fair value recorded in Revenues.

Cash and Cash Equivalents
The Company's cash and cash equivalents consist of cash and highly liquid short-term investments with original maturities of three months or less and are recorded at cost, which approximates fair value.

Inventories
Inventories primarily consist of materials and supplies, including spare parts and fuel, and natural gas inventory in storage, and are carried at the lower of weighted average cost or market.

Plant, Property and Equipment

Natural Gas Pipelines
Plant, property and equipment for natural gas pipelines are carried at cost. Depreciation is calculated on a straight-line basis once the assets are ready for their intended use. Pipeline and compression equipment are depreciated at annual rates ranging from one per cent to six per cent, and metering and other plant equipment are depreciated at various rates. The cost of overhauls of equipment is capitalized and depreciated over the estimated service lives of the overhauls. The cost of regulated natural gas pipelines includes an allowance for funds used during construction (AFUDC) consisting of a debt component and an equity component based on the rate of return on rate base approved by regulators. AFUDC is reflected as an increase

110 -- TransCanada Corporation

in the cost of the assets in Plant, Property and Equipment and the equity component of AFUDC is a non-cash expenditure. Interest is capitalized during construction of non-regulated natural gas pipelines.

When regulated natural gas pipelines retire plant, property and equipment from service, the original book cost is removed from the gross plant amount and recorded as a reduction to accumulated depreciation. Costs incurred to remove a plant from service, net of any salvage proceeds, are also recorded in accumulated depreciation.

Oil Pipelines
Plant, property and equipment for oil pipelines are carried at cost. Depreciation is calculated on a straight-line basis once the assets are ready for their intended use. Pipeline and pumping equipment are depreciated at annual rates ranging from two per cent to 2.5 per cent, and other plant and equipment are depreciated at various rates. The cost of these assets includes interest capitalized during construction. When oil pipelines retire plant, property and equipment from service, the original book cost and related accumulated depreciation and amortization are derecognized and any gain or loss is recorded in earnings.

Energy
Power generation and natural gas storage plant, equipment and structures are recorded at cost and, once the assets are ready for their intended use, depreciated by major component on a straight-line basis over their estimated service lives at average annual rates ranging from two per cent to 20 per cent. Other equipment is depreciated at various rates. The cost of overhauls of equipment is capitalized and depreciated over the estimated service lives of the overhauls. Interest is capitalized on facilities under construction. When these assets are retired from plant, property and equipment from service, the original book cost and related accumulated depreciation and amortization are derecognized and any gain or loss is recorded in earnings.

Corporate
Corporate plant, property and equipment are recorded at cost and depreciated on a straight-line basis over their estimated useful lives at average annual rates ranging from three per cent to 20 per cent.

Impairment of Long-Lived Assets
The Company reviews long-lived assets, such as plant, property and equipment, and intangible assets for impairment whenever events or changes in circumstances indicate the carrying value may not be recoverable. If the total of the estimated undiscounted future cash flows is less than the carrying value of the assets, an impairment loss is recognized for the excess of the carrying value over the fair value of the assets.

Acquisitions and Goodwill
The Company accounts for business acquisitions using the acquisition method of accounting and, accordingly, the assets and liabilities of the acquired entities are primarily measured at their estimated fair value at the date of acquisition with limited exception. Goodwill is not amortized and is tested for impairment on an annual basis or more frequently if events or changes in circumstances indicate that the asset might be impaired. The annual review for goodwill impairment is performed at the reporting unit level which is one level below the Company's operating segments. The Company initially assesses qualitative factors to determine whether events or changes in circumstances indicate that the goodwill might be impaired. If TransCanada concludes that it is not more likely than not that fair value of the reporting unit is greater than its carrying value, the first step of the two-step impairment test is performed by comparing the fair value of the reporting unit to its book value, which includes goodwill. If the fair value is less than book value, an impairment is indicated and a second step is performed to measure the amount of the impairment. In the second step, the implied fair value of goodwill is calculated by deducting the recognized amounts of all tangible and intangible net assets of the reporting unit from the fair value determined in the initial assessment. If the carrying value of goodwill exceeds the calculated implied fair value of goodwill, an impairment charge is recorded in an amount equal to the difference.

2012 Consolidated financial statements -- 111

Power Purchase Arrangements
A PPA is a long-term contract for the purchase or sale of power on a predetermined basis. The PPAs under which TransCanada buys power are accounted for as operating leases. The initial payments for these PPAs were recognized in Intangible and Other Assets and amortized on a straight-line basis over the term of the contracts, which expire in 2017 and 2020. A portion of these PPAs has been subleased to third parties under terms and conditions similar to the PPAs. The subleases are accounted for as operating leases and TransCanada records the margin earned from the subleases as a component of Revenues.

Income Taxes
The Company uses the liability method of accounting for income taxes. This method requires the recognition of deferred income tax assets and liabilities for future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. Deferred income tax assets and liabilities are measured using enacted tax rates at the balance sheet date that are anticipated to apply to taxable income in the years in which temporary differences are expected to be reversed or settled. Changes to these balances are recognized in income in the period during which they occur except for changes in balances related to the Canadian Mainline, Alberta System and Foothills, which are deferred until they are refunded or recovered in tolls, as permitted by the NEB.

Canadian income taxes are not provided on the unremitted earnings of foreign investments that the Company does not intend to repatriate in the foreseeable future.

Asset Retirement Obligations
The Company recognizes the fair value of a liability for asset retirement obligations (ARO) in the period in which it is incurred, when a legal obligation exists and a reasonable estimate of fair value can be made. The fair value is added to the carrying amount of the associated asset and the liability is accreted through charges to operating expenses.

Recorded ARO relates to the non-regulated natural gas storage operations and certain power generation facilities. The scope and timing of asset retirements related to natural gas pipelines, oil pipelines and hydroelectric power plants is indeterminable. As a result, the Company has not recorded an amount for ARO related to these assets, with the exception of certain abandoned facilities.

Environmental Liabilities
The Company records liabilities on an undiscounted basis for environmental remediation efforts that are likely to occur and where the cost can be reasonably estimated. The estimates, including associated legal costs, are based on available information using existing technology and enacted laws and regulations. The estimates are subject to revision in future periods based on actual costs incurred or new circumstances. Amounts expected to be recovered from other parties, including insurers, are recorded as an asset separate from the associated liability.

Emission allowances or credits purchased for compliance are recorded on the Balance Sheet at historical cost and expensed when they are utilized. Compliance costs are expensed when incurred. Allowances granted to or internally generated by TransCanada are not attributed a value for accounting purposes. When required, TransCanada accrues emission liabilities on the Balance Sheet upon the generation or sale of power using the best estimate of the amount required to settle the obligation. Allowances and credits not used for compliance are sold and any gain or loss is recorded in Revenues.

Stock Options and Other Compensation Programs
TransCanada's Stock Option Plan permits options for the purchase of common shares to be awarded to certain employees, including officers. Stock options granted are recorded using the fair value method. Under this method, compensation expense is measured at the grant date based on the fair value as calculated using a binomial model and is recognized on a straight-line basis over the vesting period, with an offset to Additional Paid-In Capital. Upon exercise of stock options, amounts originally recorded against Additional Paid-In Capital are reclassified to Common Shares.

112 -- TransCanada Corporation

The Company has medium-term incentive plans, under which payments are made to eligible employees. The expense related to these incentive plans is accounted for on an accrual basis. Under these plans, benefits vest when certain conditions are met, including the employees' continued employment during a specified period and achievement of specified corporate performance targets.

Employee Post-Retirement Benefits
The Company sponsors defined benefit pension plans (DB Plans), defined contribution plans (DC Plans), a Savings Plan and other post-retirement benefit plans. Contributions made by the Company to the DC Plans and Savings Plan are expensed in the period in which contributions are made. The cost of the DB Plans and other post-retirement benefits received by employees is actuarially determined using the projected benefit method pro-rated based on service and management's best estimate of expected plan investment performance, salary escalation, retirement age of employees and expected health care costs.

The DB Plans' assets are measured at fair value. The expected return on the DB Plans' assets is determined using market-related values based on a five-year moving average value for all of the DB Plans' assets. Past service costs are amortized over the expected average remaining service life of the employees. Adjustments arising from plan amendments are amortized on a straight-line basis over the average remaining service period of employees active at the date of amendment. The Company recognizes the overfunded or underfunded status of its DB Plans as an asset or liability, respectively, on its Balance Sheet and recognizes changes in that funded status through Other Comprehensive Income (OCI) in the year in which the change occurs. The excess of net actuarial gains or losses over 10 per cent of the greater of the benefit obligation and the market-related value of the DB Plans' assets, if any, is amortized out of Accumulated Other Comprehensive Loss (AOCI) over the average remaining service period of the active employees. When the restructuring of a benefit plan gives rise to both a curtailment and a settlement, the curtailment is accounted for prior to the settlement.

For certain regulated operations, post-retirement benefit amounts are recoverable through tolls as benefits are funded. The Company records any unrecognized gains or losses or changes in actuarial assumptions related to these post-retirement benefit plans as either regulatory assets or liabilities. The regulatory assets or liabilities are amortized on a straight-line basis over the average remaining service life of active employees.

Foreign Currency Transactions and Translation
Foreign currency transactions are those transactions whose terms are denominated in a currency other than the currency of the primary economic environment in which the company or reporting subsidiary operates, referred to as the functional currency. Transactions denominated in foreign currencies are translated into the functional currency using the exchange rate prevailing at the date of the transaction. Monetary assets and liabilities denominated in foreign currencies are translated to the functional currency using the rate of exchange in effect at the balance sheet date whereas non-monetary assets and liabilities are translated at the historical rate of exchange in effect on the date of the transaction. Exchange gains and losses resulting from translation of monetary assets and liabilities are recorded in income except for exchange gains and losses of the foreign currency debt related to Canadian regulated natural gas pipelines, which are deferred until they are refunded or recovered in tolls, as permitted by the NEB.

Gains and losses arising from translation of foreign operations' functional currencies to the Company's Canadian dollar reporting currency are reflected in OCI. Asset and liability accounts are translated at the period-end exchange rates while revenues, expenses, gains and losses are translated at the exchange rates in effect at the time of the transaction. The Company's U.S. dollar-denominated debt has been designated as a hedge of the net investment in foreign subsidiaries and, as a result, the unrealized foreign exchange gains and losses on the U.S. dollar denominated debt are also reflected in OCI. The amounts recognized previously in AOCI are reclassified to Net Income in the event the Company reduces its net investment in a foreign operation.

2012 Consolidated financial statements -- 113

Derivative Instruments and Hedging Activities
All derivative instruments are recorded on the balance sheet at fair value, unless they qualify for and are designated under a normal purchase and normal sales exemption, or are considered to meet other permitted exemptions.

The Company applies hedge accounting to arrangements that qualify and are designated for hedge accounting treatment, which includes fair value and cash flow hedges, and hedges of foreign currency exposures of net investments in foreign operations. Hedge accounting is discontinued prospectively if the hedging relationship ceases to be effective or the hedging or hedged items cease to exist as a result of maturity, expiry, sale, termination, cancellation or exercise.

In a fair value hedging relationship, the carrying value of the hedged item is adjusted for changes in fair value attributable to the hedged risk and these changes are recognized in Net Income. Changes in the fair value of the hedged item, to the extent that the hedging relationship is effective, are offset by changes in the fair value of the hedging item, which are also recorded in Net Income. Changes in the fair value of foreign exchange and interest rate fair value hedges are recorded in Interest Income and Other and Interest Expense, respectively. If hedge accounting is discontinued, the carrying value of the hedged item is no longer adjusted and the cumulative fair value adjustments to the carrying value of the hedged item are amortized to Net Income over the remaining term of the original hedging relationship.

In a cash flow hedging relationship, the effective portion of the change in the fair value of the hedging derivative is initially recognized in OCI, while any ineffective portion is recognized in Net Income in the same financial statement category as the underlying transaction. When hedge accounting is discontinued, the amounts recognized previously in AOCI are reclassified to Revenues, Interest Expense and Interest Income and Other, as appropriate, during the periods when the variability in cash flows of the hedged item affects Net Income or as the original hedged item settles. Gains and losses on derivatives are reclassified immediately to Net Income from AOCI when the hedged item is sold or terminated early, or when it becomes probable that the anticipated transaction will not occur.

In hedging the foreign currency exposure of a net investment in a foreign operation, the effective portion of foreign exchange gains and losses on the hedging instruments is recognized in OCI and the ineffective portion is recognized in Net Income. The amounts recognized previously in AOCI are reclassified to Net Income in the event the Company reduces its net investment in a foreign operation.

In some cases, derivatives do not meet the specific criteria for hedge accounting treatment. In these instances, the changes in fair value are recorded in Net Income in the period of change.

The recognition of gains and losses on derivatives for Canadian natural gas regulated pipelines exposures is determined through the regulatory process. Gains and losses arising from changes in the fair value of derivatives accounted for as part of RRA, including those that qualify for hedge accounting treatment, can be recovered through the tolls charged by the Company. As a result, these gains and losses are deferred as Regulatory Assets or Regulatory Liabilities and are refunded to or collected from the ratepayers in subsequent years when the derivative settles.

Derivatives embedded in other financial instruments or contracts (host instrument) are recorded as separate derivatives. Embedded derivatives are measured at fair value if their economic characteristics are not clearly and closely related to those of the host instrument, their terms are the same as those of a stand-alone derivative and the total contract is not held for trading or accounted for at fair value. When changes in the fair value of embedded derivatives are measured separately, they are included in Net Income.

Long-Term Debt Transaction Costs
The Company records long-term debt transaction costs as other assets and amortizes these costs using the effective interest method for all costs except those related to the Canadian natural gas regulated pipelines, which continue to be amortized on a straight-line basis in accordance with the provisions of tolling mechanisms.

114 -- TransCanada Corporation

Guarantees
Upon issuance, the Company records the fair value of certain guarantees entered into by the Company or partially owned entities for which contingent payments may be made. The fair value of these guarantees is estimated by discounting the cash flows that would be incurred by the Company if letters of credit were used in place of the guarantees. Guarantees are recorded as an increase to Equity Investments, Plant, Property and Equipment, or a charge to Net Income, and a corresponding liability is recorded in Other Long-Term Liabilities.

3.  ACCOUNTING CHANGES

Changes in Accounting Policies for 2012

Fair Value Measurement
Effective January 1, 2012, the Company adopted the Accounting Standards Update (ASU) on fair value measurements as issued by the Financial Accounting Standards Board (FASB). Adoption of this ASU has resulted in an increase in the qualitative and quantitative disclosures regarding Level III measurements which have been included in Note 21.

Intangibles – Goodwill
Effective January 1, 2012, the Company adopted the ASU on testing goodwill for impairment as issued by the FASB. Adoption of this ASU has resulted in a change in the accounting policy related to testing goodwill for impairment, as the Company is now permitted to first assess qualitative factors affecting the fair value of a reporting unit in comparison to the carrying amount as a basis for determining whether it is required to proceed to the two-step quantitative impairment test. The adoption of this standard had no impact on reported values of goodwill.

Future Accounting Changes

Balance Sheet Offsetting/Netting
In December 2011, the FASB issued amended guidance to enhance disclosures that will enable users of the financial statements to evaluate the effect, or potential effect, of netting arrangements on an entity's financial position. The amendments result in enhanced disclosures by requiring additional information regarding financial instruments and derivative instruments that are offset in accordance with current U.S. GAAP. This guidance is effective for annual periods beginning on or after January 1, 2013. Adoption of these amendments is expected to result in an increase in disclosure regarding financial instruments which are subject to offsetting as described in this amendment.

2012 Consolidated financial statements -- 115

4.  SEGMENTED INFORMATION

year ended December 31, 2012 (millions of Canadian dollars)	Natural Gas Pipelines		Oil Pipelines		Energy		Corporate		Total
Revenues	4,264		1,039		2,704		–		8,007
Income from equity investments	157		–		100		–		257
Plant operating costs and other	(1,365	)	(296	)	(819	)	(97	)	(2,577	)
Commodity purchases resold	–		–		(1,049	)	–		(1,049	)
Property taxes	(315	)	(45	)	(74	)	–		(434	)
Depreciation and amortization	(933	)	(145	)	(283	)	(14	)	(1,375	)
	1,808		553		579		(111	)	2,829
Interest expense									(976	)
Interest income and other									85
Income before income taxes									1,938
Income tax expense									(466	)
Net Income									1,472
Net Income Attributable to Non-Controlling Interests									(118	)
Net Income Attributable to Controlling Interests									1,354
Preferred Share Dividends									(55	)
Net Income Attributable to Common Shares									1,299

year ended December 31, 2011 (millions of Canadian dollars)	Natural Gas Pipelines		Oil Pipelines1		Energy		Corporate		Total
Revenues	4,244		827		2,768		–		7,839
Income from equity investments	159		–		256		–		415
Plant operating costs and other	(1,221	)	(209	)	(842	)	(86	)	(2,358	)
Commodity purchases resold	–		–		(991	)	–		(991	)
Property taxes	(307	)	(31	)	(72	)	–		(410	)
Depreciation and amortization	(923	)	(130	)	(261	)	(14	)	(1,328	)
	1,952		457		858		(100	)	3,167
Interest expense									(937	)
Interest income and other									55
Income before income taxes									2,285
Income tax expense									(575	)
Net Income									1,710
Net Income Attributable to Non-Controlling Interests									(129	)
Net Income Attributable to Controlling Interests									1,581
Preferred Share Dividends									(55	)
Net Income Attributable to Common Shares									1,526

1

Commencing in February 2011, TransCanada began recording earnings for the Keystone Pipeline System.

116 -- TransCanada Corporation

year ended December 31, 2010 (millions of Canadian dollars)	Natural Gas Pipelines		Oil Pipelines	Energy		Corporate		Total
Revenues	4,122		–	2,730		–		6,852
Income from equity investments	153		–	300		–		453
Plant operating costs and other	(1,165	)	–	(805	)	(99	)	(2,069	)
Commodity purchases resold	–		–	(1,178	)	–		(1,178	)
Property taxes	(294	)	–	(71	)	–		(365	)
Depreciation and amortization	(913	)	–	(247	)	–		(1,160	)
Valuation provision	(146	)	–	–		–		(146	)
	1,757		–	729		(99	)	2,387
Interest expense								(701	)
Interest income and other								94
Income before income taxes								1,780
Income tax expense								(387	)
Net Income								1,393
Net Income Attributable to Non-Controlling Interests								(115	)
Net Income Attributable to Controlling Interests								1,278
Preferred Share Dividends								(45	)
Net Income Attributable to Common Shares								1,233

Total Assets

at December 31 (millions of Canadian dollars)	2012	2011
Natural Gas Pipelines	23,210	23,161
Oil Pipelines	10,485	9,440
Energy	13,157	13,269
Corporate	1,481	1,468
	48,333	47,338

2012 Consolidated financial statements -- 117

Geographic Information

year ended December 31 (millions of Canadian dollars)	2012	2011	2010
Revenues1
Canada – domestic	3,527	3,929	3,178
Canada – export	1,121	1,087	838
United States	3,252	2,752	2,796
Mexico	107	71	40
	8,007	7,839	6,852

1

Revenues are attributed based on the country in which the product or service originated.

at December 31 (millions of Canadian dollars)	2012	2011
Plant, Property and Equipment
Canada	18,054	17,552
United States	14,904	14,388
Mexico	755	527
	33,713	32,467

Capital Expenditures

year ended December 31 (millions of Canadian dollars)	2012	2011	2010
Natural Gas Pipelines	1,389	917	1,192
Oil Pipelines	1,145	1,204	2,696
Energy	24	384	473
Corporate	37	8	15
	2,595	2,513	4,376

5.  OTHER CURRENT ASSETS

at December 31 (millions of Canadian dollars)	2012	2011
Fair value of derivative contracts (Note 21)	259	361
Deferred income tax assets (Note 15)	290	248
Regulatory assets (Note 8)	178	178
Other	270	327
	997	1,114

118 -- TransCanada Corporation

6.  PLANT, PROPERTY AND EQUIPMENT

		2012			2011
at December 31 (millions of Canadian dollars)		Cost	Accumulated Depreciation	Net Book Value	Cost	Accumulated Depreciation	Net Book Value
Natural Gas Pipelines1
Canadian Mainline
	Pipeline	8,801	5,192	3,609	8,785	4,958	3,827
	Compression	3,370	1,880	1,490	3,362	1,765	1,597
	Metering and other	391	182	209	383	175	208
		12,562	7,254	5,308	12,530	6,898	5,632
	Under construction	163	–	163	28	–	28
		12,725	7,254	5,471	12,558	6,898	5,660
Alberta System
	Pipeline	7,214	3,221	3,993	6,701	3,062	3,639
	Compression	1,885	1,177	708	1,778	1,109	669
	Metering and other	958	420	538	931	409	522
		10,057	4,818	5,239	9,410	4,580	4,830
	Under construction	463	–	463	368	–	368
		10,520	4,818	5,702	9,778	4,580	5,198
ANR
	Pipeline	864	49	815	858	47	811
	Compression	514	72	442	510	72	438
	Metering and other	520	81	439	524	59	465
		1,898	202	1,696	1,892	178	1,714
	Under construction	63	–	63	20	–	20
		1,961	202	1,759	1,912	178	1,734
Other Natural Gas Pipelines
	GTN	1,565	411	1,154	1,589	370	1,219
	Great Lakes	1,544	750	794	1,577	741	836
	Foothills	1,634	1,062	572	1,630	1,005	625
	Mexico	536	59	477	547	39	508
	Other2	1,548	226	1,322	1,576	187	1,389
		6,827	2,508	4,319	6,919	2,342	4,577
	Under construction	297	–	297	33	–	33
		7,124	2,508	4,616	6,952	2,342	4,610
		32,330	14,782	17,548	31,200	13,998	17,202
Oil Pipelines
Keystone
	Pipeline	4,897	177	4,720	4,904	80	4,824
	Pumping equipment	1,560	75	1,485	1,502	38	1,464
	Tanks and other	372	23	349	548	15	533
		6,829	275	6,554	6,954	133	6,821
Under construction3		3,678	–	3,678	2,433	–	2,433
		10,507	275	10,232	9,387	133	9,254
Energy
Natural Gas – Ravenswood		1,799	290	1,509	1,799	220	1,579
Natural Gas – Other4		2,975	746	2,229	3,002	665	2,337
Hydro		634	106	528	620	90	530
Wind5		907	118	789	843	88	755
Natural Gas Storage6		677	83	594	454	78	376
Other		134	86	48	131	83	48
		7,126	1,429	5,697	6,849	1,224	5,625
Under construction – Other		136	–	136	308	–	308
		7,262	1,429	5,833	7,157	1,224	5,933
Corporate		154	54	100	129	51	78
		50,253	16,540	33,713	47,873	15,406	32,467

2012 Consolidated financial statements -- 119

1

In 2012, the Company capitalized $32 million (2011 – $23 million) relating to the equity portion of AFUDC for natural gas pipelines with a corresponding amount recorded in Interest Income and Other.

2

Includes in service assets of Bison, Portland, North Baja, Tuscarora and Ventures LP. Bison went in service in January 2011.

3

Includes $2.0 billion and $1.5 billion for Keystone XL and the Gulf Coast Project, respectively, at December 31, 2012 (2011 – $1.5 billion and $0.9 billion, respectively). Keystone XL remains subject to regulatory approvals.

4

Includes facilities with long-term PPAs that are accounted for as operating leases, including Coolidge which went in service in May 2011. The cost and accumulated depreciation of these facilities
were $601 million and $55 million, respectively, at December 31, 2012 (2011 – $605 million and $34 million, respectively). Revenues of $73 million were recognized in 2012 (2011 – $53 million; 2010 – $15 million)
through the sale of electricity under the related PPAs.

5

Includes Cartier phase two of Gros-Morne effective November 2012, phase one of Gros-Morne effective November 2011, and Montagne-Sèche effective November 2011.

6

Includes acquisition in December 2012 of BP's 40 per cent interest in the assets of the Crossfield Gas Storage facility and BP's interest in CrossAlta Gas Storage & Services Ltd.

7.  GOODWILL

The Company has recorded the following goodwill on its acquisitions in the U.S.:

(millions of Canadian dollars)	Natural Gas Pipelines		Energy		Total
Balance at January 1, 2011	2,634		823		3,457
Foreign exchange rate changes	59		18		77
Balance at December 31, 2011	2,693		841		3,534
Foreign exchange rate changes	(58	)	(18	)	(76	)
Balance at December 31, 2012	2,635		823		3,458

8.  RATE-REGULATED BUSINESSES

TransCanada's businesses that apply RRA currently include Canadian and U.S. natural gas pipelines and regulated U.S. natural gas storage. Regulatory assets and liabilities represent future revenues that are expected to be recovered from or refunded to customers based on decisions and approvals by the applicable regulatory authorities.

Canadian Regulated Operations
The Canadian Mainline, Alberta System, Foothills and TQM pipelines are regulated by the NEB under the National Energy Board Act (Canada). The NEB regulates the construction and operation of facilities, and the terms and conditions of services, including rates, for the Company's Canadian regulated natural gas transmission systems.

TransCanada's Canadian natural gas transmission services are supplied under natural gas transportation tariffs that provide for cost recovery, including return of and return on capital as approved by the NEB. Rates charged for these services are typically set through a process that involves filing an application with the regulator wherein forecasted operating costs, including a return of and on capital, determine the revenues for the upcoming year. To the extent that actual costs and revenues are more or less than the forecasted costs and revenues, the regulators generally allow the difference to be deferred to a future period and recovered or refunded in rates at that time. Differences between actual and forecasted costs that the regulator does not allow to be deferred are included in the determination of net income in the year they occur.

Canadian Mainline
In 2011, TransCanada filed a comprehensive application with the NEB to change the business structure and the terms and conditions of service for the Canadian Mainline, including addressing tolls for 2012 and 2013.

120 -- TransCanada Corporation

The application included a 7.0 per cent after-tax weighted average cost of capital (ATWACC) fair return which is equivalent to an ROE of 12 per cent on a deemed common equity of 40 per cent. This application is currently under review by the NEB with a decision not expected before late first quarter 2013 and accordingly, any adjustments relating to 2012 results will be recorded when the decision is received. In the absence of a decision by the NEB, Canadian Mainline's 2012 results reflect the last approved ROE of 8.08 per cent on a deemed common equity of 40 per cent and exclude incentive earnings.

The Canadian Mainline operated under a five-year settlement, effective from January 1, 2007 to December 31, 2011. The Canadian Mainline's cost of capital for establishing tolls under the settlement reflected an ROE as determined by the NEB's RH-2-94 ROE formula on a deemed common equity of 40 per cent. The allowed ROE in 2011 for the Canadian Mainline was 8.08 per cent. The balance of the capital structure was comprised of short and long-term debt.

The settlement also established the Canadian Mainline's fixed operating, maintenance and administration (OM&A) costs for each of the five years. Variances in OM&A costs were shared equally between TransCanada and its customers in 2011. All other cost elements of the revenue requirement were treated on a flow-through basis. The settlement also allowed for performance-based incentive arrangements.

In September 2011, the NEB approved the Canadian Mainline's interim tolls as final for 2011, including TransCanada's proposal to carry forward any revenue variances into the determination of 2012 tolls. However, the NEB determined that TransCanada's inclusion of certain elements in the proposed 2011 revenue requirement, which were derived in accordance with the 2007-2011 Settlement, would be examined with TransCanada's 2012-2013 Tolls Application before a final decision was rendered on the 2011 revenue requirement. Any adjustments relating to the 2011 revenue requirement will be recorded when the NEB decision is received.

Alberta System
In September 2010, the NEB approved the Alberta System's 2010-2012 Revenue Requirement Settlement Application. The settlement provided for a 9.70 per cent ROE on a deemed common equity of 40 per cent and fixed certain annual OM&A costs during the term. Any variances between actual costs and those agreed to in the settlement accrued to TransCanada. All other costs were treated on a flow-through basis.

Foothills
In June 2010, TransCanada reached an agreement to establish a cost of capital for Foothills that reflected a 9.70 per cent ROE on a deemed common equity of 40 per cent for 2010 to 2012. A component of OM&A was fixed, subject to the terms of the B.C. System/Foothills Integration Settlement, and variances between actual and fixed amounts were shared with customers up to and including June 2011 when the OM&A savings cap was reached.

TQM
In November 2010, the NEB approved TQM's multi-year settlement with its interested parties regarding its annual revenue requirements for 2010 to 2012. As part of the settlement, the annual revenue requirement was comprised of fixed and flow-through components. The fixed component included certain OM&A costs, return on rate base, depreciation and municipal taxes. Any variances between actual costs and those included in the fixed component accrued to TQM.

U.S. Regulated Operations
TransCanada's U.S. natural gas pipelines are "natural gas companies" operating under the provisions of the Natural Gas Act of 1938, the Natural Gas Policy Act of 1978 (NGA) and the Energy Policy Act of 2005, and are subject to the jurisdiction of the FERC. The NGA grants the FERC authority over the construction and operation of pipelines and related facilities. The FERC also has authority to regulate rates for natural gas transportation in interstate commerce. The Company's significant regulated U.S. natural gas pipelines are described below.

2012 Consolidated financial statements -- 121

ANR
ANR's natural gas transportation and storage services are provided for under tariffs regulated by the FERC. These tariffs include maximum and minimum rates for services and allow ANR to discount or negotiate rates on a non-discriminatory basis. ANR Pipeline Company rates were established pursuant to a settlement approved by the FERC that was effective beginning in 1997. ANR Pipeline Company is not required to conduct a review of currently effective rates with the FERC at any time in the future but is not prohibited from filing for new rates if necessary. ANR Storage Company, which is another FERC regulated entity that owns and operates storage fields in Michigan, has rates that were established pursuant to a settlement approved by the FERC in August 2012. ANR Storage Company is required to file a NGA Section 4 general rate case no later than July 1, 2016.

In 2011, ANR Pipeline Company filed an application with the FERC to sell its offshore Gulf of Mexico assets and certain related onshore facilities to its wholly owned subsidiary, TC Offshore LLC. At the same time, TC Offshore LLC requested authorization from the FERC to acquire, own and operate those facilities under FERC regulation. The requests were granted and TC Offshore LLC began operating under FERC approved tariff rates on November 1, 2012. TC Offshore LLC is required to file a cost and revenue study to justify its existing approved cost-based rates after its first three years of operation.

GTN
GTN is regulated by the FERC and operates in accordance with a FERC-approved tariff that establishes maximum and minimum rates for various services. GTN is permitted to discount or negotiate these rates on a non-discriminatory basis. GTN's rates were established pursuant to a settlement approved by the FERC in January 2012. That settlement provided for a four year moratorium during which GTN and the settling parties are prohibited from taking certain actions under the NGA, including filings to adjust rates. GTN is required to file for new rates to be effective January 1, 2016.

Great Lakes
Great Lakes is regulated by the FERC and operates in accordance with a FERC-approved tariff that establishes maximum and minimum rates for its various services and permits Great Lakes to discount or negotiate rates on a non-discriminatory basis. Great Lakes rates were established pursuant to a settlement approved by the FERC in July 2010. Great Lakes is required to file a NGA Section 4 general rate case no later than November 1, 2013.

Bison
Bison is regulated by the FERC and operates in accordance with a FERC-approved tariff that establishes maximum and minimum rates for various services. Bison is permitted to discount or negotiate these rates on a non-discriminatory basis. Bison's rates were established pursuant to its initial certificate to construct and operate the pipeline that initiated service in January 2011.

122 -- TransCanada Corporation

Regulatory Assets and Liabilities

at December 31 (millions of Canadian dollars)	2012	2011	Remaining Recovery/ Settlement Period (years)
Regulatory Assets
Deferred income taxes1	1,122	1,178	n/a
Operating and debt-service regulatory assets2	171	172	1
Adjustment account3	80	82	30
Other4	434	430	n/a
	1,807	1,862
Less: Current portion included in Other Current Assets	178	178
	1,629	1,684
Regulatory Liabilities
Foreign exchange on long-term debt5	150	184	1-17
Operating and debt-service regulatory liabilities2	84	135	1
Other4	134	117	n/a
	368	436
Less: Current portion included in Accounts Payable	100	139
	268	297

1

These regulatory assets are underpinned by non-cash transactions or are recovered without an allowance for return as approved by the regulator. Accordingly, these regulatory
assets are not included in rate base and do not yield a return on investment during the recovery period.

2

Operating and debt-service regulatory assets and liabilities represent the accumulation of cost and revenue variances approved by the regulatory authority for inclusion in
determining tolls for the following calendar year. Pre-tax operating results in 2012 would have been $50 million lower (2011 – $102 million higher) had these amounts not been recorded
as regulatory assets and liabilities.

3

A regulatory adjustment account of $85 million was established and agreed upon by Canadian Mainline stakeholders to reduce tolls in 2010. Amortization of the adjustment account
commenced in 2011 at the composite depreciation rate.

4

Pre-tax operating results in 2012 would have been $97 million higher (2011 – $106 million lower) had these amounts not been recorded as regulatory assets and liabilities.

5

Foreign exchange on long-term debt of the Canadian Mainline, Alberta System and Foothills represents the variance resulting from revaluing foreign currency-denominated
debt instruments to the current foreign exchange rate from the historical foreign exchange rate at the time of issue. Foreign exchange gains and losses realized
when foreign debt matures or is redeemed early are expected to be recovered or refunded through the determination of future tolls. In the absence of RRA, U.S. GAAP would have
required the inclusion of these unrealized gains or losses in Net Income.

2012 Consolidated financial statements -- 123

9.  EQUITY INVESTMENTS

		Income/(Loss) from Equity Investments				Equity Investments
	Ownership Interest as at	year ended December 31				at December 31
(millions of Canadian dollars)	December 31, 2012	2012		2011	2010	2012	2011
Natural Gas Pipelines
Northern Border1		72		75	69	511	545
Iroquois	44.5%	41		40	40	174	181
TQM	50.0%	16		17	16	80	82
Other	Various	28		27	28	60	72
Energy
Bruce A	48.9%	(149	)	33	35	4,033	3,561
Bruce B	31.6%	163		77	138	69	115
ASTC Power Partnership	50.0%	40		84	41	42	58
Portlands Energy	50.0%	28		33	33	341	313
CrossAlta2		10		23	45	n/a	18
Other	Various	8		6	8	56	132
		257		415	453	5,366	5,077

1

The results reflect a 50 per cent interest in Northern Border as a result of the Company fully consolidating TC PipeLines, LP. At December 31, 2012, TransCanada had an ownership interest in TC PipeLines, LP of 33.3 per cent
(2011 – 33.3 per cent; 2010 – 38.2 per cent) and its effective ownership of Northern Border, net of non-controlling interests, was 16.7 per cent (2011 – 16.7 per cent; 2010 – 19.1 per cent).

2

In 2011, Property, Plant and Equipment included $63 million of assets owned directly by TransCanada through an undivided interest in the Crossfield joint venture which were utilized in the operations of the CrossAlta joint venture.
In December 2012, TransCanada acquired the remaining 40 per cent interest in CrossAlta to bring the Company's ownership interest to 100 per cent. The results reflect the Company's 60 per cent share of equity income up to
December 18, 2012. Refer to Note 23, Acquisitions and Dispositions, for additional information.

Distributions received from equity investments for the year ended December 31, 2012 were $436 million (2011 – $494 million; 2010 – $486 million) of which $60 million (2011 – $101 million; 2010 – $40 million) were returns of capital and are included in Deferred amounts and other in the Consolidated Statement of Cash Flows. The undistributed earnings from equity investments as at December 31, 2012 were $883 million (2011 – $1,062 million; 2010 – $1,141 million). At December 31, 2012, the difference between the carrying value of the investment and the underlying equity in the net assets of Northern Border Pipeline Company and Bruce Power is US$119 million (2011 – US$120 million) and $918 million (2011 – $820 million), respectively. This difference is primarily due to the fair value assessment of assets at the time of the acquisitions of Northern Border and Bruce Power, and interest capitalized related to the refurbishment of Units 1 and 2 at Bruce Power.

Summarized Financial Information of Equity Investments

year ended December 31 (millions of Canadian dollars)	2012		2011		2010
Income
Revenues	3,860		4,042		3,920
Operating and other expenses	(3,090	)	(2,989	)	(2,773	)
Net income	717		929		1,009
Net income attributable to TransCanada	257		415		453

124 -- TransCanada Corporation

at December 31 (millions of Canadian dollars)	2012		2011
Balance Sheet
Current assets	1,593		1,430
Non current assets	12,154		11,550
Current liabilities	(1,187	)	(1,172	)
Non current liabilities	(3,787	)	(3,232	)

10.  INTANGIBLE AND OTHER ASSETS

at December 31 (millions of Canadian dollars)	2012	2011
PPAs1	376	428
Loans and advances2	196	224
Fair value of derivative contracts (Note 21)	187	202
Deferred income tax assets (Note 15)	105	132
Employee post-retirement benefits (Note 20)	11	–
Other	468	480
	1,343	1,466

1

The following amounts related to PPAs are included in Intangible and Other Assets:

	2012			2011
at December 31 (millions of Canadian dollars)	Cost	Accumulated Amortization	Net Book Value	Cost	Accumulated Amortization	Net Book Value
Sheerness	585	273	312	585	234	351
Sundance A	225	161	64	225	148	77
	810	434	376	810	382	428

Amortization expense for these PPAs was $52 million for the year ended December 31, 2012 (2011 and 2010 – $52 million). The expected annual amortization expense in each
of the next five years is $52 million.

2

As at December 31, 2012, TransCanada held a $236 million (2011 – $265 million) note receivable from the seller of Ravenswood which bears interest at 6.75 per cent and
matures in 2040. The current portion of the note receivable of $40 million (2011 – $41 million) is included in Other Current Assets.

Sundance A
In December 2010, Sundance A Units 1 and 2 were withdrawn from service and were subject to a force majeure claim by the PPA owner in January 2011. In July 2012, TransCanada received the binding arbitration decision regarding the Sundance A PPA force majeure and economic destruction claims. The arbitration panel determined that the PPA should not be terminated and ordered TransAlta Corporation (TransAlta) to return Units 1 and 2 to service. The panel also limited TransAlta's force majeure claim from November 20, 2011 until the units can reasonably be returned to service. TransAlta announced that it expects the units to be returned to service in fall 2013.

Between December 2010 and March 2012, TransCanada recorded revenues and costs related to the Sundance A PPA as though the outages of Units 1 and 2 were interruptions of supply. As a result of the decision, TransCanada recorded a $50 million pre-tax charge in second quarter of 2012, comprised of $20 million previously accrued in 2011 and $30 million previously accrued through first quarter of 2012, as these amounts

2012 Consolidated financial statements -- 125

are no longer recoverable. Other than the $20 million charge related to 2011 and the amortization of the original PPA cost, there are no pre-tax earnings recognized in 2012 for the Sundance A PPA.

Advances to Aboriginal Pipeline Group
The Mackenzie Delta gas producers, the Aboriginal Pipeline Group (APG) and TransCanada have an agreement governing TransCanada's role in the Mackenzie Gas Project (MGP). Under the agreement, TransCanada agreed to finance the APG for its one-third share of project pre-development costs. Amounts advanced to the APG for the MGP in 2012 and 2011 have been expensed. In 2010, a valuation provision of $146 million was recorded on the loan to the APG due to uncertainty with the project's ultimate commercial structure, fiscal framework, timeframes under which the project would proceed and when the advances to the APG will be repaid.

11.  NOTES PAYABLE

	2012		2011
(millions of Canadian dollars)	Outstanding December 31	Weighted Average Interest Rate per Annum at December 31	Outstanding December 31	Weighted Average Interest Rate per Annum at December 31
Canadian dollars	803	1.2%	466	1.2%
U.S. dollars (2012 – US$1,480; 2011 – US$1,373)	1,472	0.4%	1,397	0.5%
	2,275		1,863

Notes payable consists of commercial paper issued by TransCanada PipeLines Limited (TCPL), TransCanada PipeLine USA Ltd. (TCPL USA) and TransCanada Keystone Pipeline, LP (TC Keystone) and drawings on line-of-credit and demand facilities.

At December 31, 2012, total committed revolving and demand credit facilities of $5.3 billion were available. When drawn, interest on the lines of credit is charged at prime rates of Canadian chartered and U.S. banks, and at other negotiated financial bases. These unsecured credit facilities included the following:

•

a $2.0 billion committed, syndicated, revolving, extendible TCPL credit facility, maturing October 2017. The facility was fully available at December 31, 2012. The cost to maintain the credit facility was $4 million in 2012 (2011 – $2 million; 2010 – $2 million);

•

a US$300 million committed, syndicated, revolving TCPL USA credit facility, guaranteed by TransCanada and maturing February 2013. At December 31, 2012, this facility was fully available. This facility is part of the initial US$1.0 billion credit facility discussed in Note 14. The cost to maintain the credit facility was nil in 2012 (2011 – $1 million; 2010 – $1 million);

•

a US$1.0 billion committed, syndicated, revolving, extendible TC Keystone credit facility, guaranteed by TCPL and TCPL USA and maturing November 2013. The facility was fully available at December 31, 2012. The cost to maintain the credit facility was $1 million in 2012 (2011 – $4 million; 2010 – $5 million);

•

a US$1.0 billion committed, syndicated, revolving, extendible TCPL USA credit facility, guaranteed by TCPL and maturing October 2013. At December 31, 2012, this facility was fully available. The cost to maintain the credit facility was $1 million in 2012 (2011 – $4 million; 2010 – $4 million); and

•

demand lines totalling $1 billion, which support the issuance of letters of credit and provide additional liquidity. At December 31, 2012, the Company had used approximately $627 million of these demand lines for letters of credit.

126 -- TransCanada Corporation

12.  ACCOUNTS PAYABLE AND OTHER

at December 31 (millions of Canadian dollars)	2012	2011
Trade payables	923	696
Fair value of derivative contracts (Note 21)	283	485
Dividends payable	320	305
Regulatory liabilities (Note 8)	100	139
Deferred income tax liabilities (Note 15)	–	81
Other	718	653
	2,344	2,359

13.  OTHER LONG-TERM LIABILITIES

at December 31 (millions of Canadian dollars)	2012	2011
Employee post-retirement benefit (Note 20)	482	321
Fair value of derivative contracts (Note 21)	186	349
Guarantees (Note 24)	17	118
Asset retirement obligations	72	65
Other	125	76
	882	929

2012 Consolidated financial statements -- 127

14.  LONG-TERM DEBT

			2012		2011
Outstanding loan amounts (millions of Canadian dollars)		Maturity Dates	Outstanding December 31	Interest Rate1	Outstanding December 31	Interest Rate1
TRANSCANADA PIPELINES LIMITED
Debentures
	Canadian dollars	2014 to 2020	874	10.9%	874	10.9%
	U.S. dollars (2012 – US$400; 2011 – US$600)	2021	398	9.9%	610	9.5%
Medium-Term Notes
	Canadian dollars	2013 to 2041	4,549	5.9%	4,549	5.9%
Senior Unsecured Notes
	U.S. dollars (2012 – US$10,126; 2011 –  US$8,626)2	2013 to 2040	10,057	5.6%	8,759	6.2%
			15,878		14,792
NOVA GAS TRANSMISSION LTD.
Debentures and Notes
	Canadian dollars	2014 to 2024	382	11.5%	387	11.5%
	U.S. dollars (2012 – US$200; 2011 – US$375)	2023	199	7.9%	381	8.2%
Medium-Term Notes
	Canadian dollars	2025 to 2030	504	7.4%	504	7.4%
	U.S. dollars (2012 and 2011 – US$33)	2026	32	7.5%	33	7.5%
			1,117		1,305
TRANSCANADA PIPELINE USA LTD.
Bank Loan
	U.S. dollars (2012 – nil; 2011 – US$500)		–	–	509	0.6%
ANR PIPELINE COMPANY
Senior Unsecured Notes
	U.S. dollars (2012 and 2011 – US$432)	2021 to 2025	430	8.9%	438	8.9%
GAS TRANSMISSION NORTHWEST CORPORATION
Senior Unsecured Notes
	U.S. dollars (2012 and 2011 – US$325)	2015 to 2035	323	5.5%	331	5.5%
TC PIPELINES, LP
Unsecured Loan
	U.S. dollars (2012 – US$312; 2011 – US$363)	2017	310	1.5%	369	1.6%
Senior Unsecured Notes
	U.S. dollars (2012 and 2011 – US$350)	2021	348	4.7%	356	4.7%
			658		725
GREAT LAKES GAS TRANSMISSION LIMITED PARTNERSHIP
Senior Unsecured Notes
	U.S. dollars (2012 – US$354; 2011 – US$373)	2018 to 2030	352	7.8%	379	7.8%
TUSCARORA GAS TRANSMISSION COMPANY
Senior Secured Notes
	U.S. dollars (2012 – US$27; 2011 – US$30)	2017	27	4.0%	31	4.4%
PORTLAND NATURAL GAS TRANSMISSION SYSTEM
Senior Secured Notes3
	U.S. dollars (2012 – US$129; 2011 – US$147)	2018	128	6.1%	149	6.1%
			18,913		18,659
Less: Current Portion of Long-Term Debt			894		935
			18,019		17,724

1

Interest rates are the effective interest rates except for those pertaining to long-term debt issued for the Company's regulated operations, in which case the weighted average interest rate is presented as
approved by the regulators. Weighted average and effective interest rates are stated as at the respective outstanding dates.

128 -- TransCanada Corporation

2

Includes fair value adjustments of $10 million (2011 – $13 million) attributable to the hedged interest rate risk associated with interest rate swap fair value hedging relationships on US$350 million of debt at December 31, 2012 (2011 – US$350 million).

3

Secured by shipper transportation contracts, existing and new guarantees, letters of credit and collateral requirements.

Principal Repayments
Principal repayments on the long-term debt of the Company for the next five years are approximately as follows: 2013 – $894 million; 2014 – $970 million; 2015 – $1,561 million; 2016 – $1,214 million; and 2017 – $555 million.

TransCanada PipeLines Limited
In August 2012, TCPL issued US$1.0 billion of Senior Notes maturing August 1, 2022 and bearing interest at 2.5 per cent.

In May 2012, TCPL retired US$200 million of 8.625 per cent Senior Notes.

In March 2012, TCPL issued US$500 million of Senior Notes maturing March 2, 2015, and bearing interest at 0.875 per cent.

In November 2011, TCPL issued $500 million and $250 million of Medium-Term Notes maturing November 15, 2021 and November 15, 2041, respectively, and bearing interest at 3.65 per cent and 4.55 per cent, respectively.

In May 2011, TCPL retired $60 million of 9.5 per cent Medium-Term Notes.

In January 2011, TCPL retired $300 million of 4.3 per cent Medium-Term Notes.

In September 2010, TCPL issued US$1.0 billion of Senior Notes maturing October 1, 2020, and bearing interest at 3.80 per cent.

In June 2010, TCPL issued US$500 million and US$750 million of Senior Notes maturing on June 1, 2015 and June 1, 2040, respectively, and bearing interest at 3.4 per cent and 6.1 per cent, respectively.

In February 2010, TCPL retired US$120 million of 6.125 per cent Medium-Term Notes and in August 2010, TCPL retired $130 million of 10.50 per cent debentures.

NOVA Gas Transmission Ltd.
In December 2012, NOVA Gas Transmission Ltd. (NGTL) retired US$175 million of 8.5 per cent Debentures.

Debentures issued by NGTL in the amount of $225 million have retraction provisions that entitle the holders to require redemption of up to eight per cent of the then outstanding principal plus accrued and unpaid interest on specified repayment dates. No redemptions were made to December 31, 2012.

TransCanada PipeLine USA Ltd.
TCPL USA has an initial US$1.0 billion committed, unsecured, syndicated credit facility, guaranteed by TransCanada which was reduced to a US$300 million credit facility through term loan repayments of US$500 million and US$200 million in January 2012 and August 2011, respectively. The facility consists of a US$300 million revolving facility maturing in February 2013, described further in Note 11. The term loan's outstanding balance of US$500 million at December 31, 2011 was fully repaid in January 2012.

TC PipeLines, LP
In July 2011, TC PipeLines, LP increased its senior syndicated revolving credit facility to US$500 million and extended the maturity date to July 2016. In November 2012, the Senior Credit facility was further amended, extending the maturity date to November 2017.

In December 2011, TC PipeLines, LP repaid a maturing US$300 million term loan with a draw under this facility, and at December 31, 2012, US$312 million (2011 – US$363 million) was outstanding on the facility.

2012 Consolidated financial statements -- 129

In June 2011, TC PipeLines, LP issued US$350 million of 4.65 per cent Senior Notes due 2021. The proceeds from the issuance were used to partially repay TC PipeLines, LP's term loan and borrowings under its senior revolving credit facility, and repay its bridge loan facility described below.

In May 2011, TC PipeLines, LP made draws of US$61 million on a bridge loan facility and US$125 million on its senior revolving credit facility to partially fund the acquisition of a 25 per cent interest in each of Gas Transmission Northwest LLC (GTN LLC) and Bison Pipeline LLC (Bison LLC) as further described in Note 23.

Interest Expense

year ended December 31 (millions of Canadian dollars)	2012		2011		2010
Interest on long-term debt	1,190		1,154		1,149
Interest on junior subordinated notes	63		63		65
Interest on short-term debt	16		16		15
Capitalized interest	(300	)	(302	)	(587	)
Amortization and other financial charges1	7		6		59
	976		937		701

1

Amortization and other financial charges includes amortization of transaction costs and debt discounts calculated using the effective interest method and changes
in the fair value of derivatives used to manage the Company's exposure to rising interest rates.

The Company made interest payments of $966 million in 2012 (2011 – $926 million; 2010 – $652 million) on long-term debt and junior subordinated notes, net of interest capitalized on construction projects.

15.  INCOME TAXES

Provision for Income Taxes

year ended December 31 (millions of Canadian dollars)	2012	2011		2010
Current
Canada	167	212		31
Foreign	14	(2	)	(170	)
	181	210		(139	)
Deferred
Canada	69	139		175
Foreign	216	226		351
	285	365		526
Income Tax Expense	466	575		387

Geographic Components of Income

year ended December 31 (millions of Canadian dollars)	2012	2011	2010
Canada	842	1,176	811
Foreign	1,096	1,109	969
Income before Income Taxes	1,938	2,285	1,780

130 -- TransCanada Corporation

Reconciliation of Income Tax Expense

year ended December 31 (millions of Canadian dollars)	2012		2011		2010
Income before Income Taxes	1,938		2,285		1,780
Federal and provincial statutory tax rate	25.0%		26.5%		28.0%
Expected income tax expense	485		605		498
Income tax differential related to regulated operations	41		42		8
Higher/(lower) effective foreign tax rates	1		(5	)	(36	)
Income from equity investments and non-controlling interests	(40	)	(45	)	(40	)
Other	(21	)	(22	)	(43	)
Actual Income Tax Expense	466		575		387

Deferred Income Tax Assets and Liabilities

at December 31 (millions of Canadian dollars)	2012	2011
Deferred Income Tax Assets
Operating loss carryforwards	1,024	900
Financial instruments	88	166
Pension and other post-employment benefits	83	42
Deferred amounts	49	49
Other	92	132
	1,336	1,289
Deferred Income Tax Liabilities
Difference in accounting and tax bases of plant, equipment and PPAs	3,804	3,609
Equity investments	578	457
Taxes on future revenue requirement	283	295
Unrealized foreign exchange gains on long-term debt	159	133
Other	70	87
	4,894	4,581
Net Deferred Income Tax Liabilities	3,558	3,292

2012 Consolidated financial statements -- 131

The above deferred tax amounts have been classified in the Consolidated Balance Sheet as follows:

at December 31 (millions of Canadian dollars)	2012	2011
Deferred Income Tax Assets
Other current assets (Note 5)	290	248
Intangible and other assets (Note 10)	105	132
	395	380
Deferred Income Tax Liabilities
Accounts payable and other (Note 12)	–	81
Deferred income taxes	3,953	3,591
	3,953	3,672
Net Deferred Income Tax Liabilities	3,558	3,292

At December 31, 2012, the Company has recognized the benefit of unused non-capital loss carryforwards of $865 million (2011 – $450 million) for federal and provincial purposes in Canada, which expire from 2014 to 2032.

At December 31, 2012, the Company has recognized the benefit of unused net operating loss carryforwards of US$2,174 million (2011 – US$2,119 million) for federal purposes in the U.S., which expire from 2028 to 2032.

Unremitted Earnings of Foreign Investments
Income taxes have not been provided on the unremitted earnings of foreign investments that the Company does not intend to repatriate in the foreseeable future. Deferred income tax liabilities would have increased at December 31, 2012 by approximately $144 million (2011 – $136 million) if there had been a provision for these taxes.

Income Tax Payments
Income tax payments of $190 million, net of refunds, were made in 2012 (2011 – refunds, net of payments made, of $84 million; 2010 – payments, net of refunds, of $53 million).

Reconciliation of Unrecognized Tax Benefit
Below is the reconciliation of the annual changes in the total unrecognized tax benefit:

at December 31 (millions of Canadian dollars)	2012		2011		2010
Unrecognized tax benefits at beginning of year	52		62		55
Gross increases – tax positions in prior years	2		9		7
Gross decreases – tax positions in prior years	(6	)	(7	)	(1	)
Gross increases – tax positions in current year	9		11		9
Settlements	–		–		(7	)
Lapses of statute of limitations	(8	)	(23	)	(1	)
Unrecognized tax benefits at end of year	49		52		62

TransCanada expects the enactment of certain Canadian federal tax legislation in the next 12 months which is expected to result in a favourable income tax adjustment of approximately $25 million. Otherwise, subject to the results of audit examinations by taxing authorities and other legislative amendments, TransCanada does not anticipate further adjustments to the unrecognized tax benefits during the next twelve months that would have a material impact on its financial statements.

132 -- TransCanada Corporation

TransCanada and its subsidiaries are subject to either Canadian federal and provincial income tax, U.S. federal, state and local income tax or the relevant income tax in other international jurisdictions. The Company has substantially concluded all Canadian federal and provincial income tax matters for the years through 2007. Substantially all material U.S. federal income tax matters have been concluded for years through 2007 and U.S. state and local income tax matters through 2007.

TransCanada's practice is to recognize interest and penalties related to income tax uncertainties in Income Tax Expense. Net tax expense for the year ended December 31, 2012 reflects a reversal of $2 million of interest expense and nil for penalties (2011 – $12 million reversal of interest expense and nil for penalties; 2010 – $3 million for interest expense and nil for penalties). At December 31, 2012, the Company had $5 million accrued for interest expense and nil accrued for penalties (December 31, 2011 – $7 million accrued for interest expense and nil accrued for penalties).

16.  JUNIOR SUBORDINATED NOTES

			2012		2011
Outstanding loan amount (millions of Canadian dollars)		Maturity Date	Outstanding December 31	Effective Interest Rate	Outstanding December 31	Effective Interest Rate
TRANSCANADA PIPELINES LIMITED
	U.S. dollars (2012 and 2011 – US$1,000)	2067	994	6.5%	1,016	6.5%

Junior Subordinated Notes of US$1.0 billion mature in 2067 and bear interest at 6.35 per cent per year until May 15, 2017, when interest will convert to a floating rate that is reset quarterly to the three-month London Interbank Offered Rate plus 221 basis points. The Company has the option to defer payment of interest for periods of up to 10 years without giving rise to a default and without permitting acceleration of payment under the terms of the Junior Subordinated Notes. However, the Company would be prohibited from paying dividends during any such deferral period. The Junior Subordinated Notes are subordinated in right of payment to existing and future senior indebtedness and are effectively subordinated to all indebtedness and other obligations of TCPL. The Junior Subordinated Notes are callable at the Company's option at any time on or after May 15, 2017, at 100 per cent of the principal amount of the Junior Subordinated Notes plus accrued and unpaid interest to the date of redemption. The Junior Subordinated Notes are callable earlier, in whole or in part, upon the occurrence of certain events and at the Company's option at an amount equal to the greater of 100 per cent of the principal amount of the Junior Subordinated Notes plus accrued and unpaid interest to the date of redemption and an amount determined by a specified formula in accordance with the terms of the Junior Subordinated Notes.

17.  NON-CONTROLLING INTERESTS

The Company's non-controlling interests included in the Consolidated Balance Sheet were as follows:

at December 31 (millions of Canadian dollars)	2012	2011
Non-controlling interest in TC PipeLines, LP1	953	997
Preferred shares of TCPL	389	389
Non-controlling interest in Portland2	83	79
	1,425	1,465

2012 Consolidated financial statements -- 133

The Company's non-controlling interests included in the Consolidated Statement of Income were as follows:

year ended December 31 (millions of Canadian dollars)	2012	2011	2010
Non-controlling interest in TC PipeLines, LP1	91	101	87
Preferred share dividends of TCPL	22	22	22
Non-controlling interest in Portland2	5	6	6
	118	129	115

1

Effective May 3, 2011, the non-controlling interest in TC PipeLines, LP increased from 61.8 per cent to 66.7 per cent due to the issuance of equity to non-controlling
interests in TC PipeLines, LP associated with the sale of 25 per cent interests in GTN LLC and Bison LLC pipelines from TransCanada to TC PipeLines, LP. The
non-controlling interest in TC PipeLines, LP from January 1, 2010 to May 3, 2011 was 61.8 per cent.

2

The non-controlling interests in Portland as at December 31, 2012 represented the 38.3 per cent interest not owned by TransCanada (2011 and 2010 – 38.3 per cent).

Preferred Shares of TCPL

at December 31	Number of Shares	Dividend Rate per Share	Redemption Price per Share	2012	2011
	(thousands)			(millions of Canadian dollars)	(millions of Canadian dollars)
Cumulative First Preferred Shares of Subsidiary
Series U	4,000	$2.80	$50.00	195	195
Series Y	4,000	$2.80	$50.00	194	194
				389	389

The authorized number of preferred shares of TCPL issuable in each series is unlimited. All of the cumulative first preferred shares of TCPL are without par value.

On or after October 15, 2013, TCPL may redeem the Series U preferred shares at $50 per share, and on or after March 5, 2014, TCPL may redeem the Series Y shares at $50 per share.

Cash Dividends
Cash dividends of $22 million or $2.80 per share were paid on the Series U and Series Y preferred shares in each of 2012, 2011 and 2010.

In 2012, TransCanada received fees of $3 million from TC PipeLines, LP (2011 and 2010 – $2 million) and $7 million from Portland (2011 and 2010 – $7 million) for services provided.

134 -- TransCanada Corporation

18.  COMMON SHARES

		Number of Shares	Amount
		(thousands)	(millions of Canadian dollars)
Outstanding at January 1, 2010		684,359	11,338
	Dividend reinvestment and share purchase plan	10,670	378
	Exercise of options	1,201	29
Outstanding at December 31, 2010		696,230	11,745
	Dividend reinvestment and share purchase plan	5,371	202
	Exercise of options	2,260	64
Outstanding at December 31, 2011		703,861	12,011
	Exercise of options	1,600	58
Outstanding at December 31, 2012		705,461	12,069

Common Shares Issued and Outstanding
The Company is authorized to issue an unlimited number of common shares without par value.

Net Income per Share
Net income per share is calculated by dividing Net Income Attributable to Common Shares by the weighted average number of common shares outstanding. During the year, the weighted average number of common shares outstanding of 704.6 million and 705.7 million (2011 – 701.6 million and 702.8 million; 2010 – 690.5 million and 691.7 million) were used to calculate basic and diluted earnings per share, respectively. The increase in the weighted average number of shares for the diluted earnings per share calculation is due to the options exercisable under TransCanada's Stock Option Plan.

Stock Options

	Number of Options		Weighted Average Exercise Prices	Options Exercisable
	(thousands)			(thousands)
Outstanding at January 1, 2010	8,274		$30.56	6,212
Granted	1,367		$35.32
Exercised	(1,201	)	$22.04
Forfeited	(34	)	$27.35
Outstanding at December 31, 2010	8,406		$32.57	6,458
Granted	970		$38.02
Exercised	(2,260	)	$25.86
Forfeited	(16	)	$35.83
Outstanding at December 31, 2011	7,100		$35.44	5,165
Granted	1,978		$42.03
Exercised	(1,600	)	$33.13
Forfeited	(44	)	$36.55
Outstanding at December 31, 2012	7,434		$37.69	4,588

2012 Consolidated financial statements -- 135

Stock options outstanding were as follows:

at December 31, 2012	Options Outstanding			Options Exercisable
Range of Exercise Prices	Number of Options	Weighted Average Exercise Price	Weighted Average Remaining Contractual Life	Number of Options	Weighted Average Exercise Price	Weighted Average Remaining Contractual Life
	(thousands)		(years)	(thousands)		(years)
$30.10 to $31.97	1,093	$31.95	3.2	1,093	$31.95	3.2
$32.40 to $35.08	1,387	$34.64	4.0	1,160	$34.55	4.0
$35.23 to $37.93	1,202	$37.52	5.0	556	$37.22	4.9
$38.10 to $39.75	1,750	$38.83	1.7	1,750	$38.83	1.7
$41.65 to $45.29	2,002	$42.03	6.1	29	$41.87	5.9
	7,434	$37.69	3.9	4,588	$35.93	2.7

An additional 2.4 million common shares were reserved for future issuance under TransCanada's Stock Option Plan at December 31, 2012. The weighted average fair value of options granted to purchase common shares under the Company's Stock Option Plan was determined to be $5.08 for the year ended December 31, 2012 (2011 – $2.94; 2010 – $5.76). The contractual life of options granted is seven years. Options may be exercised at a price determined at the time the option is awarded and vest 33.3 per cent on the anniversary date in each of the three years following the award. Forfeiture of stock options results from their expiration and, if not previously vested, upon resignation, retirement or termination of the option holder's employment. The Company used a binomial model for determining the fair value of options granted applying the following weighted average assumptions for 2012: 5.9 years of expected life (2011 and 2010 – 4.0 years); 1.6 per cent interest rate (2011 – 2.1 per cent; 2010 – 2.0 per cent); 19 per cent volatility (2011 – 14 per cent; 2010 – 27 per cent); 4.2 per cent dividend yield (2011 – 4.3 per cent; 2010 – 4.7 per cent) and a 15 per cent forfeiture rate (2011 – 15 per cent; 2010 – 15 per cent). Volatility is derived based on the average of both the historical and implied volatility of the Company's common shares. The amount expensed for stock options, with a corresponding increase in additional paid-in capital, was $5 million in 2012 (2011 – $5 million and 2010 – $4 million).

The total intrinsic value of options exercised in 2012 was $18 million (2011 – $34 million; 2010 – $17 million). As at December 31, 2012, the aggregate intrinsic value of the total options exercisable was $51 million and the total intrinsic value of options outstanding was $69 million. In 2012, the 1.0 million (2011 – 0.9 million; 2010 – 1.5 million) shares that vested had a fair value of $49 million (2011 – $42 million; 2010 – $57 million).

Shareholder Rights Plan
TransCanada's Shareholder Rights Plan is designed to provide the Board with sufficient time to explore and develop alternatives for maximizing shareholder value in the event of a takeover offer for the Company and to encourage the fair treatment of shareholders in connection with any such offer. Attached to each common share is one right that, under certain circumstances, entitles certain holders to purchase two common shares of the Company for the then current market price of one.

Cash Dividends
Cash dividends of $1,226 million or $1.74 per common share were paid in 2012 (2011 – $961 million or $1.66 per common share, net of the Dividend Reinvestment Plan (DRP); 2010 – $710 million or $1.58 per common share, net of DRP).

Dividend Reinvestment Plan
Under the Company's DRP, eligible holders of common or preferred shares of TransCanada and preferred shares of TCPL can reinvest their dividends and make optional cash payments to obtain TransCanada common

136 -- TransCanada Corporation

shares. Commencing with the dividends declared in April 2011, dividends payable to shareholders who participate in the DRP are satisfied with common shares purchased on the open market determined on the basis of the weighted average purchase price of such common shares. Previously, common shares issued in lieu of cash dividends under the DRP were issued from treasury at a discount to the average market price in the five days before dividend payment. The discount was set at three per cent in 2010, and was reduced to two per cent commencing with the dividends declared in February 2011 and was eliminated completely in April 2011. In 2011 and 2010, TransCanada issued 5.4 million and 10.7 million common shares from treasury in accordance with the DRP in lieu of making cash dividend payments of $202 million and $378 million respectively.

19.  PREFERRED SHARES

at December 31	Number of Shares Authorized and Outstanding	Dividend Rate per Share	Redemption Price per Share	2012	2011
	(thousands)			(millions of Canadian dollars)1	(millions of Canadian dollars)1
Cumulative First Preferred Shares
Series 1	22,000	$1.15	$25.00	539	539
Series 3	14,000	$1.00	$25.00	343	343
Series 5	14,000	$1.10	$25.00	342	342
				1,224	1,224

1

Net of underwriting commissions and deferred income taxes.

The holders of the Series 1 preferred shares are entitled to receive fixed cumulative dividends at an annual rate of $1.15 per share, payable quarterly, for the initial five-year period ending December 31, 2014. The dividend rate will reset on December 31, 2014 and every five years thereafter to a yield per annum equal to the sum of the then five-year Government of Canada bond yield and 1.92 per cent. The Series 1 preferred shares are redeemable by TransCanada on December 31, 2014 and on December 31 of every fifth year thereafter at a price of $25.00 per share plus all accrued and unpaid dividends.

The Series 1 preferred shareholders have the right to convert their shares into Series 2 cumulative redeemable first preferred shares on December 31, 2014 and on December 31 of every fifth year thereafter. The holders of Series 2 preferred shares will be entitled to receive quarterly floating rate cumulative dividends at a yield per annum equal to the sum of the then 90-day Government of Canada treasury bill rate and 1.92 per cent.

The holders of the Series 3 preferred shares are entitled to receive fixed cumulative dividends at an annual rate of $1.00 per share, payable quarterly, for the initial five-year period ending June 30, 2015. The dividend rate will reset on June 30, 2015 and every five years thereafter to a yield per annum equal to the sum of the then five-year Government of Canada bond yield and 1.28 per cent. The Series 3 preferred shares are redeemable by TransCanada on June 30, 2015 and on June 30 of every fifth year thereafter at a price of $25.00 per share plus all accrued and unpaid dividends.

The Series 3 preferred shareholders have the right to convert their shares into Series 4 cumulative redeemable first preferred shares on June 30, 2015 and on June 30 of every fifth year thereafter. The holders of Series 4 preferred shares will be entitled to receive quarterly floating rate cumulative dividends at a yield per annum equal to the sum of the then 90-day Government of Canada treasury bill rate and 1.28 per cent.

2012 Consolidated financial statements -- 137

The holders of the Series 5 preferred shares are entitled to receive fixed cumulative dividends at an annual rate of $1.10 per share, payable quarterly, for the initial five-and-a-half-year period ending January 30, 2016. The dividend rate will reset on January 30, 2016 and every five years thereafter to a yield per annum equal to the sum of the then five-year Government of Canada bond yield and 1.54 per cent. The Series 5 preferred shares are redeemable by TransCanada on January 30, 2016 and on January 30 of every fifth year thereafter at a price of $25.00 per share plus all accrued and unpaid dividends.

The Series 5 preferred shareholders have the right to convert their shares into Series 6 cumulative redeemable first preferred shares on January 30, 2016 and on January 30 of every fifth year thereafter. The holders of Series 6 preferred shares will be entitled to receive quarterly floating rate cumulative dividends at a yield per annum equal to the sum of the then 90-day Government of Canada treasury bill rate and 1.54 per cent.

Cash Dividends
In 2012, the Company made cash dividend payments of $25 million or $1.15 per Series 1 preferred share (2011 – $25 million or $1.15 per share, net of DRP; 2010 – $24 million or $1.15 per share, net of DRP), $14 million or $1.00 per Series 3 preferred share (2011 – $14 million or $1.00 per share, net of DRP; 2010 – $11 million or $0.8041 per share, net of DRP) and $16 million or $1.10 per Series 5 preferred share (2011 – $16 million or $1.10 per share, net of DRP; 2010 – $9 million or $0.3707 per share, net of DRP).

20.  EMPLOYEE POST-RETIREMENT BENEFITS

The Company sponsors DB Plans for its employees. Pension benefits provided under the DB Plans are based on years of service and highest average earnings over three consecutive years of employment. Upon commencement of retirement, pension benefits in the Canadian DB Plans increase annually by a portion of the increase in the Consumer Price Index. Past service costs are amortized over the expected average remaining service life of employees, which is approximately nine years (2011 – eight years; 2010 – eight years).

The Company also provides its employees with a Savings Plan in Canada, DC Plans consisting of 401(k) Plans in the U.S., and post-employment benefits other than pensions, including termination benefits and life insurance and medical benefits beyond those provided by government-sponsored plans. Past service costs are amortized over the expected average remaining life expectancy of former employees, which was approximately 12 years at December 31, 2012 (2011 – 12 years; 2010 – 12 years). In 2012, the Company expensed $24 million (2011 – $23 million, 2010 – $21 million) for the Savings Plan and DC Plans.

Total cash payments for employee post-retirement benefits, consisting of cash contributed by the Company to the DB Plans and other benefit plans, was $114 million in 2012 (2011 – $93 million, 2010 – $127 million), including $24 million in 2012 (2011 – $23 million, 2010 – $21 million) related to the Savings Plan and DC Plans. In addition to these cash payments, in 2012 the Company provided a $48 million letter of credit to the Canadian DB Plan (2011 – $27 million), resulting in a total of $75 million provided to the Canadian DB Plan under letters of credit at December 31, 2012.

138 -- TransCanada Corporation

The Company measures its accrued benefit obligations and the fair value of plan assets for accounting purposes as at December 31 of each year. The most recent actuarial valuation of the pension plans for funding purposes was as at January 1, 2013, and the next required valuation will be as at January 1, 2014.

at December 31	Pension Benefit Plans				Other Post-Retirement Benefit Plans
(millions of Canadian dollars)	2012		2011		2012		2011
Change in Benefit Obligation1
Benefit obligation – beginning of year	1,836		1,622		170		159
Service cost	66		54		2		2
Interest cost	94		91		8		9
Employee contributions	4		4		1		1
Benefits paid	(79	)	(71	)	(9	)	(9	)
Actuarial loss	227		131		16		7
Foreign exchange rate changes	(6	)	5		(2	)	1
Benefit obligation – end of year	2,142		1,836		186		170
Change in Plan Assets
Plan assets at fair value – beginning of year	1,656		1,636		29		29
Actual return on plan assets	165		21		4		–
Employer contributions	83		62		7		8
Employee contributions	4		4		1		1
Benefits paid	(79	)	(71	)	(9	)	(9	)
Foreign exchange rate changes	(4	)	4		–		–
Plan assets at fair value – end of year	1,825		1,656		32		29
Funded Status – Plan Deficit	(317	)	(180	)	(154	)	(141	)

1

The benefit obligation for the Company's pension benefit plan represents the projected benefit obligation. The benefit obligation for the Company's other post-retirement
benefit plans represents the accumulated post-retirement benefit obligation.

The amounts recognized in the Company's Balance Sheet for its DB plans and other post-retirement benefits plans are as follows:

at December 31	Pension Benefit Plans				Other Post-Retirement Benefit Plans
(millions of Canadian dollars)	2012		2011		2012		2011
Intangible and Other Assets (Note 10)	–		–		11		–
Other Long-Term Liabilities (Note 13)	(317	)	(180	)	(165	)	(141	)
	(317	)	(180	)	(154	)	(141	)

2012 Consolidated financial statements -- 139

Included in the above benefit obligation and fair value of plan assets were the following amounts for plans that are not fully funded:

at December 31	Pension Benefit Plans				Other Post-Retirement Benefit Plans
(millions of Canadian dollars)	2012		2011		2012		2011
Benefit obligation	(2,142	)	(1,836	)	(186	)	(170	)
Plan assets at fair value	1,825		1,656		32		29
Funded Status – Deficit	(317	)	(180	)	(154	)	(141	)

The accumulated benefit obligation for all DB pension plans at December 31, 2012 is $1,966 million (2011 – $1,691 million).

The funded status based on the accumulated benefit obligation for all DB Plans is as follows:

at December 31 (millions of Canadian dollars)	2012		2011
Accumulated benefit obligation	(1,966	)	(1,691	)
Plan assets at fair value	1,825		1,656
Funded Status – Deficit	(141	)	(35	)

Included in the above accumulated benefit obligation and fair value of plan assets are the following amounts in respect of plans that are not fully funded.

at December 31 (millions of Canadian dollars)	2012		2011
Accumulated benefit obligation	(1,966	)	(446	)
Plan assets at fair value	1,825		391
Funded Status – Deficit	(141	)	(55	)

The Company pension plans' weighted average asset allocations and target allocations by asset category were as follows:

Asset Category

	Percentage of Plan Assets		Target Allocations
at December 31	2012	2011	2012
Debt securities	36%	39%	35% to 60%
Equity securities	64%	61%	40% to 65%
	100%	100%

Debt securities included the Company's debt of $2 million (0.1 per cent of total plan assets) and $2 million (0.1 per cent of total plan assets) at December 31, 2012 and 2011, respectively. Equity securities included the Company's common shares of $3 million (0.2 per cent of total plan assets) and $3 million (0.2 per cent of total plan assets) at December 31, 2012 and 2011, respectively.

140 -- TransCanada Corporation

Pension plan assets are managed on a going concern basis, subject to legislative restrictions, and are diversified across asset classes to maximize returns at an acceptable level of risk. Asset mix strategies consider plan demographics and may include traditional equity and debt securities, as well as alternative assets such as infrastructure, private equity and derivatives to diversify risk. Derivatives are not used for speculative purposes and the use of leveraged derivatives is prohibited.

All investments are measured at fair value using market prices. Where the fair value cannot be readily determined by reference to generally available price quotations, the fair value is determined by considering the discounted cash flows on a risk-adjusted basis and by comparison to similar assets which are publicly traded.

The following table presents plan assets for DB Plans and other post-retirement benefits measured at fair value, which have been categorized into three categories based on a fair value hierarchy. In Level I, the fair value of assets is determined by reference to quoted prices in active markets for identical assets that the Company has the ability to access at the measurement date. In Level II, the fair value of assets is determined using valuation techniques, such as option pricing models and extrapolation using significant inputs, which are observable directly or indirectly. In Level III, the fair value of assets is determined using a market approach based on inputs that are unobservable and significant to the overall fair value measurement.

at December 31 (millions of			Quoted Prices in Active Markets (Level I)		Significant Other Observable Inputs (Level II)		Significant Unobservable Inputs (Level III)		Total		Percentage of Total Portfolio
Canadian dollars)			2012	2011	2012	2011	2012	2011	2012	2011	2012	2011
Asset Category
Cash and cash equivalents			17	25	–	–	–	–	17	25	1%	1%
Equity Securities:
	Canadian		400	374	113	95	–	–	513	469	28%	28%
	U.S.		309	251	38	55	–	–	347	306	19%	18%
	International		31	25	263	231	–	–	294	256	16%	15%
	Global		–	–	13	–	–	–	13	–	–	–
Fixed Income Securities:
	Canadian Bonds:
		Federal	–	–	314	303	–	–	314	303	17%	18%
		Provincial	–	–	161	158	–	–	161	158	9%	9%
		Municipal	–	–	5	4	–	–	5	4	–	–
		Corporate	–	–	65	47	–	–	65	47	4%	3%
	U.S. Bonds:
		State	–	–	33	29	–	–	33	29	2%	2%
		Corporate	–	–	45	29	–	–	45	29	2%	2%
	International:
		Corporate	–	–	9	9	–	–	9	9	–	1%
		Mortgage Backed	–	–	22	30	–	–	22	30	1%	2%
Other Investments:
	Private Equity Funds		–	–	–	–	19	20	19	20	1%	1%
			757	675	1,081	990	19	20	1,857	1,685	100%	100%

2012 Consolidated financial statements -- 141

The following table presents the net change in the Level III fair value category:

(millions of Canadian dollars, pre-tax)	Private Equity Funds
Balance at December 31, 2010	21
Realized and unrealized losses	(2	)
Purchases and sales	1
Balance at December 31, 2011	20
Realized and unrealized losses	(1	)
Balance at December 31, 2012	19

The Company's expected funding contributions in 2013 are approximately $71 million for the DB Plans and approximately $33 million for the other post-retirement benefit plans, Savings Plan and DC Plans. In addition, the Company expects to provide a $59 million letter of credit to the Canadian DB Plan.

The following are estimated future benefit payments, which reflect expected future service:

(millions of Canadian dollars)	Pension Benefits	Other Post- Retirement Benefits
2013	90	9
2014	96	9
2015	101	10
2016	107	10
2017	111	11
2018 to 2022	636	58

The rate used to discount pension and other post-retirement benefit plan obligations was developed based on a yield curve of corporate AA bond yields at December 31, 2012. This yield curve is used to develop spot rates that vary based on the duration of the obligations. The estimated future cash flows for the pension and other post-retirement obligations were matched to the corresponding rates on the spot rate curve to derive a weighted average discount rate.

The significant weighted average actuarial assumptions adopted in measuring the Company's benefit obligations were as follows:

	Pension Benefit Plans		Other Post-Retirement Benefit Plans
at December 31	2012	2011	2012	2011
Discount rate	4.35%	5.05%	4.35%	5.10%
Rate of compensation increase	3.15%	3.15%

142 -- TransCanada Corporation

The significant weighted average actuarial assumptions adopted in measuring the Company's net benefit plan costs were as follows:

	Pension Benefit Plans			Other Post-Retirement Benefit Plans
year ended December 31	2012	2011	2010	2012	2011	2010
Discount rate	5.05%	5.55%	6.00%	5.10%	5.60%	6.00%
Expected long-term rate of return on plan assets	6.70%	6.95%	6.95%	6.40%	6.40%	7.80%
Rate of compensation increase	3.15%	3.10%	3.20%

The overall expected long-term rate of return on plan assets is based on historical and projected rates of return for the portfolio in aggregate and for each asset class in the portfolio. Assumed projected rates of return are selected after analyzing historical experience and estimating future levels and volatility of returns. Asset class benchmark returns, asset mix and anticipated benefit payments from plan assets are also considered in determining the overall expected rate of return. The discount rate is based on market interest rates of high-quality bonds that match the timing and benefits expected to be paid under each plan.

A 7.5 per cent average annual rate of increase in the per capita cost of covered health care benefits was assumed for 2013 measurement purposes. The rate was assumed to decrease gradually to five per cent by 2020 and remain at this level thereafter. A one per cent change in assumed health care cost trend rates would have the following effects:

(millions of Canadian dollars)	Increase	Decrease
Effect on total of service and interest cost components	1	(1	)
Effect on post-retirement benefit obligation	17	(14	)

The Company's net benefit cost is as follows:

year ended December 31	Pension Benefit Plans						Other Post-Retirement Benefit Plans
(millions of Canadian dollars)	2012		2011		2010		2012		2011		2010
Service cost	66		54		50		2		2		2
Interest cost	94		91		89		8		9		9
Expected return on plan assets	(113	)	(114	)	(108	)	(2	)	(2	)	(2	)
Amortization of actuarial loss	18		10		5		1		1		1
Amortization of past service cost	2		2		2		1		–		–
Amortization of regulatory asset	19		12		5		1		1		1
Amortization of transitional obligation related to regulated business	–		–		–		2		2		2
Net Benefit Cost Recognized	86		55		43		13		13		13

2012 Consolidated financial statements -- 143

Pre-tax amounts recognized in AOCI were as follows:

at December 31	2012		2011		2010
(millions of Canadian dollars)	Pension Benefits	Other Post- Retirement Benefits	Pension Benefits	Other Post- Retirement Benefits	Pension Benefits	Other Post- Retirement Benefits
Net loss	362	33	282	29	179	24
Prior service cost	5	2	7	2	9	2
	367	35	289	31	188	26

The estimated net loss and prior service cost for the DB Plans that will be amortized from AOCI into net periodic benefit cost in 2013 are $31 million and $2 million, respectively. The estimated net loss and prior service cost for the other post-retirement plans that will be amortized from AOCI into net periodic benefit cost in 2013 is $2 million and nil, respectively.

Pre-tax amounts recognized in OCI were as follows:

at December 31	2012				2011				2010
(millions of Canadian dollars)	Pension Benefits		Other Post- Retirement Benefits		Pension Benefits		Other Post- Retirement Benefits		Pension Benefits		Other Post- Retirement Benefits
Amortization of net loss from AOCI to OCI	(19	)	(1	)	(10	)	(1	)	(5	)	(1	)
Amortization of prior service costs from AOCI to OCI	(2	)	–		(2	)	–		(2	)	–
Funded status adjustment	99		5		113		6		15		4
	78		4		101		5		8		3

144 -- TransCanada Corporation

21.  RISK MANAGEMENT AND FINANCIAL INSTRUMENTS

Risk Management Overview
TransCanada has exposure to market risk and counterparty credit risk. TransCanada engages in risk management activities with the objective of mitigating the impact of these risks on earnings, cash flow and, ultimately, shareholder value.

Risk management strategies, policies and limits are designed to ensure TransCanada's risks and related exposures are in line with the Company's business objectives and risk tolerance. Market risk and counterparty credit risk are managed within limits ultimately established by the Company's Board of Directors, implemented by senior management and monitored by risk management and internal audit personnel. The Board of Directors' Audit Committee oversees how management monitors compliance with market risk and counterparty credit risk management policies and procedures, and oversees management's review of the adequacy of the risk management framework. Internal audit personnel assist the Audit Committee in its oversight role by performing regular and ad-hoc reviews of risk management controls and procedures, the results of which are reported to the Audit Committee.

Market Risk
The Company constructs and invests in large infrastructure projects, purchases and sells energy commodities, issues short-term and long-term debt, including amounts in foreign currencies, and invests in foreign operations. Certain of these activities expose the Company to market risk from changes in commodity prices, foreign exchange rates and interest rates, which may affect the Company's earnings and the value of the financial instruments it holds.

The Company uses derivatives as part of its overall risk management strategy to assist in managing the exposure to market risk that results from these activities. Derivative contracts used to manage market risk generally consist of the following:

•

Forwards and futures contracts – contractual agreements to purchase or sell a specific financial instrument or commodity at a specified price and date in the future. TransCanada enters into foreign exchange and commodity forwards and futures to mitigate the impact of volatility in foreign exchange rates and commodity prices.

•

Swaps – contractual agreements between two parties to exchange streams of payments over time according to specified terms. The Company enters into interest rate, cross-currency and commodity swaps to mitigate the impact of changes in interest rates, foreign exchange rates and commodity prices.

•

Options – contractual agreements that convey the right, but not the obligation, of the purchaser to buy or sell a specific amount of a financial instrument or commodity at a fixed price, either at a fixed date or at any time within a specified period. The Company enters into option agreements to mitigate the risk of changes in interest rates, foreign exchange rates and commodity prices.

Where possible, derivative instruments are designated as hedges, but in some cases derivatives do not meet the specific criteria for hedge accounting treatment and are accounted for at fair value with changes in fair value recorded in Net Income in the period of change. This may expose the Company to increased variability in reported earnings because the fair value of the derivative instruments can fluctuate significantly from period to period, however, the Company enters into the arrangements as they are considered to be effective economic hedges.

2012 Consolidated financial statements -- 145

Commodity Price Risk
The Company is exposed to commodity price movements as part of its normal business operations, particularly in relation to the prices of electricity and natural gas. A number of strategies are used to mitigate these exposures, including the following:

•

Subject to its overall risk management strategy, the Company commits a portion of its expected power supply to fixed-price medium-term or long-term sales contracts, while reserving an amount of unsold supply to mitigate operational and price risks in its asset portfolio.

•

The Company purchases a portion of the natural gas required for its power plants or enters into contracts that base the sale price of electricity on the cost of natural gas, effectively locking in a margin.

•

The Company's power sales commitments are fulfilled through power generation or purchased through contracts, thereby reducing the Company's exposure to fluctuating commodity prices.

•

The Company enters into offsetting or back-to-back positions using derivative instruments to manage price risk exposure in power and natural gas commodities created by certain fixed and variable pricing arrangements for different pricing indices and delivery points.

The Company assesses its commodity contracts and derivative instruments used to manage commodity risk to determine the appropriate accounting treatment. Contracts, with the exception of leases, have been assessed to determine whether they or certain aspects of them meet the definition of a derivative. Certain commodity purchase and sale contracts are derivatives but fair value accounting is not required, as they were entered into and continue to be held for the purpose of receipt or delivery in accordance with the Company's normal purchases and normal sales exemptions and are documented as such. In addition, fair value accounting is not required for other financial instruments that qualify for certain exemptions.

Natural Gas Storage Commodity Price Risk
TransCanada manages its exposure to seasonal natural gas price spreads in its non-regulated Natural Gas Storage business by economically hedging storage capacity with a portfolio of third-party storage capacity contracts and proprietary natural gas purchases and sales. TransCanada simultaneously enters into a forward purchase of natural gas for injection into storage and an offsetting forward sale of natural gas for withdrawal at a later period, thereby locking in future positive margins and effectively eliminating exposure to natural gas price movements. Fair value adjustments recorded each period on these forward contracts are not necessarily representative of the amounts that will be realized on settlement.

Foreign Exchange and Interest Rate Risk
Foreign exchange and interest rate risk is created by fluctuations in the fair value or cash flow of financial instruments due to changes in foreign exchange rates and interest rates.

A portion of TransCanada's earnings from its Natural Gas Pipelines, Oil Pipelines and Energy segments is generated in U.S. dollars and, therefore, fluctuations in the value of the Canadian dollar relative to the U.S. dollar can affect TransCanada's net income. This foreign exchange impact is partially offset by U.S. dollar-denominated financing costs and by the Company's hedging activities. TransCanada has a greater exposure to U.S. currency fluctuations than in prior years due to growth in its U.S. operations, partially offset by increased levels of U.S. dollar-denominated interest expense.

The Company uses foreign currency and interest rate derivatives to manage the foreign exchange and interest rate risks related to its debt and other U.S. dollar-denominated transactions. Certain of the realized gains and losses on these derivatives are deferred as regulatory assets and liabilities until they are recovered from or paid to the shippers in accordance with the terms of the shipping agreements.

TransCanada has floating interest rate debt which subjects it to interest rate cash flow risk. The Company uses a combination of interest rate swaps and options to manage its exposure to this risk.

146 -- TransCanada Corporation

Net Investment in Foreign Operations
The Company hedges its net investment in foreign operations (on an after-tax basis) with U.S. dollar-denominated debt, cross-currency interest rate swaps, forward foreign exchange contracts and foreign exchange options. At December 31, 2012, the Company had designated as a net investment hedge U.S. dollar-denominated debt with a carrying value of $11.1 billion (US$11.2 billion) (2011 – $10 billion (US$9.8 billion)) and a fair value of $14.3 billion (US$14.4 billion) (2011 – $12.7 billion (US$12.5 billion)). At December 31, 2012, $71 million (December 31, 2011 – $79 million) was included in Other Current Assets, $47 million (December 31, 2011 – $66 million) was included in Intangible and Other Assets, $6 million (December 31, 2011 – $15 million) was included in Accounts Payable and Other, and $30 million (December 31, 2011 – $41 million) was included in Other Long-Term Liabilities for the fair value of the forwards and swaps used to hedge the Company's net U.S. dollar investment in foreign operations.

The fair values and notional or principal amounts for the derivatives designated as a net investment hedge were as follows:

Asset/(Liability)

	2012		2011
at December 31 (millions of Canadian dollars)	Fair Value1	Notional or Principal Amount	Fair Value1		Notional or Principal Amount
U.S. dollar cross-currency swaps (maturing 2013 to 2019)2	82	US 3,800	93		US 3,850
U.S. dollar forward foreign exchange contracts (maturing 2013)	–	US 250	(4	)	US 725
	82	US 4,050	89		US 4,575

1

Fair values equal carrying values.

2

Net Income in 2012 included net realized gains of $30 million (2011 – gains of $27 million) related to the interest component of cross-currency swap settlements.

Counterparty Credit Risk
Counterparty credit risk represents the financial loss the Company would experience if a counterparty to a financial instrument failed to meet its obligations in accordance with the terms and conditions of the financial instruments with the Company.

Counterparty credit risk is managed through established credit management techniques, including conducting financial and other assessments to establish and monitor a counterparty's creditworthiness, setting exposure limits, monitoring exposures against these limits, using contract netting arrangements and obtaining financial assurances where warranted. In general, financial assurances include guarantees, letters of credit and cash. The Company monitors and manages its concentration of counterparty credit risk on an ongoing basis. The Company believes these measures minimize its counterparty credit risk but there is no certainty that they will protect it against all material losses.

2012 Consolidated financial statements -- 147

TransCanada's maximum counterparty credit exposure with respect to financial instruments at the Balance Sheet date, without taking into account security held, consisted of accounts receivable, portfolio investments recorded at fair value, the fair value of derivative assets and notes, and loans and advances receivable. The carrying amounts and fair values of these financial assets, except amounts for derivative assets, are included in Accounts receivable and other, and Available for sale assets in the Non-Derivative Financial Instruments Summary table located in the Fair Values section of this note. The majority of counterparty credit exposure is with counterparties that are investment grade or the exposure is supported by financial assurances provided by investment grade parties. The Company regularly reviews its accounts receivable and records an allowance for doubtful accounts as necessary using the specific identification method. At December 31, 2012, there were no significant amounts past due or impaired, and there were no significant credit losses during the year.

At December 31, 2012, the Company had a credit risk concentration of $259 million (2011 – $274 million) due from a counterparty. This amount is expected to be fully collectible and is secured by a guarantee from the counterparty's parent company.

TransCanada has significant credit and performance exposures to financial institutions as they provide committed credit lines and cash deposit facilities, critical liquidity in the foreign exchange derivative, interest rate derivative and energy wholesale markets, and letters of credit to mitigate TransCanada's exposure to non-creditworthy counterparties.

As a level of uncertainty continues to exist in the global financial markets, TransCanada continues to closely monitor and reassess the creditworthiness of its counterparties. This has resulted in TransCanada reducing or mitigating its exposure to certain counterparties where it was deemed warranted and permitted under contractual terms. As part of its ongoing operations, TransCanada must balance its market and counterparty credit risks when making business decisions.

Fair Values

Non-derivative Instruments
Certain financial instruments included in Cash and Cash Equivalents, Accounts Receivable, Intangible and Other Assets, Notes Payable, Accounts Payable, Accrued Interest and Other Long-Term Liabilities have carrying amounts that approximate their fair value due to the nature of the item or the short time to maturity. The fair value of the Company's Notes Receivable is calculated by discounting future payments of interest and principal using forward interest rates. The fair value of Long-Term Debt was estimated based on quoted market prices for the same or similar debt instruments. The fair value of available for sale assets has been calculated using quoted market prices where available.

Derivative Instruments
The fair value of foreign exchange and interest rate derivatives have been calculated using the income approach which uses year-end market rates and applies a discounted cash flow valuation model. The fair value of power and natural gas derivatives and available for sale investments has been calculated using quoted market prices where available. In the absence of quoted market prices, third-party broker quotes or other valuation techniques have been used.

Credit risk has been taken into consideration when calculating the fair value of derivatives, Notes Receivable and Long-Term Debt.

148 -- TransCanada Corporation

Non-Derivative Financial Instruments Summary
The carrying and fair values of non-derivative financial instruments were as follows:

	2012		2011
at December 31 (millions of Canadian dollars)	Carrying Amount1	Fair Value2	Carrying Amount1	Fair Value2
Financial Assets
Cash and cash equivalents	551	551	654	654
Accounts receivable and other3	1,288	1,337	1,359	1,403
Available for sale assets3	44	44	23	23
	1,883	1,932	2,036	2,080
Financial Liabilities4
Notes payable	2,275	2,275	1,863	1,863
Accounts payable and other long-term liabilities5	1,535	1,535	1,329	1,329
Accrued interest	368	368	365	365
Long-term debt	18,913	24,573	18,659	23,757
Junior subordinated notes	994	1,054	1,016	1,027
	24,085	29,805	23,232	28,341

1

Recorded at amortized cost, except for $350 million (2011 – $350 million) of Long-Term Debt that is attributed to hedged risk and recorded at fair value. This debt, which is recorded at fair value on a recurring
basis, is classified in Level II of the fair value hierarchy using the income approach based on interest rates from external data service providers.

2

The fair value measurement of financial assets and liabilities recorded at amortized cost for which the fair value is not equal to the carrying value would be included in Level II of the fair value hierarchy using the
income approach based on interest rates from external data service providers.

3

At December 31, 2012, the Consolidated Balance Sheet included financial assets of $1.1 billion (2011 – $1.1 billion) in Accounts Receivable, $40 million (2011 – $41 million)
in Other Current Assets and $240 million (2011 – $247 million) in Intangible and Other Assets.

4

Consolidated Net Income in 2012 included losses of $10 million (2011 – losses of $13 million) for fair value adjustments attributable to the hedged interest rate risk associated with interest
rate swap fair value hedging relationships on US$350 million of debt at December 31, 2012 (2011 – US$350 million). There were no other unrealized gains or losses from fair value adjustments to the
non-derivative financial instruments.

5

At December 31, 2012, the Consolidated Balance Sheet included financial liabilities of $1.5 billion (2011 – $1.2 billion) in Accounts Payable and $38 million (2011 – $137 million)
in Other Long-Term Liabilities.

2012 Consolidated financial statements -- 149

The following tables detail the remaining contractual maturities for TransCanada's non-derivative financial liabilities, including both the principal and interest cash flows at December 31, 2012:

Contractual Repayments of Financial Liabilities¹

	Payments Due by Period
(millions of Canadian dollars)	Total	2013	2014 and 2015	2016 and 2017	2018 and Thereafter
Notes payable	2,275	2,275	–	–	–
Long-term debt	18,913	894	2,531	1,769	13,719
Junior subordinated notes	994	–	–	–	994
	22,182	3,169	2,531	1,769	14,713

1

The anticipated timing of settlement of derivative contracts is presented in the Derivatives Instrument Summary in this note.

Interest Payments on Financial Liabilities

	Payments Due by Period
(millions of Canadian dollars)	Total	2013	2014 and 2015	2016 and 2017	2018 and Thereafter
Long-term debt	15,377	1,154	2,125	1,908	10,190
Junior subordinated notes	3,443	63	126	126	3,128
	18,820	1,217	2,251	2,034	13,318

150 -- TransCanada Corporation

Derivative Instruments Summary
Information for the Company's derivative instruments for 2012, excluding hedges of the Company's net investment in foreign operations, is as follows:

at December 31			2012
(all amounts in Canadian millions unless otherwise indicated)			Power		Natural Gas		Foreign Exchange		Interest
Derivative Instruments Held for Trading1
Fair Values2
	Assets		$139		$88		$1		$14
	Liabilities		$(176	)	$(104	)	$(2	)	$(14	)
Notional Values
	Volumes3
		Purchases	31,135		83		–		–
		Sales	31,066		65		–		–
	Canadian dollars		–		–		–		620
	U.S. dollars		–		–		US 1,408		US 200
	Cross-currency		–		–		–		–
Net unrealized (losses)/gains in the year4			$(30	)	$2		$(1	)	$–
Net realized gains/(losses) in the year4			$5		$(10	)	$26		$–
Maturity dates			2013-2017		2013-2016		2013		2013-2016
Derivative Instruments in Hedging Relationships5,6
Fair Values2
	Assets		$76		$–		$–		$10
	Liabilities		$(97	)	$(2	)	$(38	)	$–
Notional Values
	Volumes3
		Purchases	15,184		1		–		–
		Sales	7,200		–		–		–
	U.S. dollars		–		–		US 12		US 350
	Cross-currency		–		–		136/US 100		–
Net realized (losses)/gains in the year4			$(130	)	$(23	)	$–		$7
Maturity dates			2013-2018		2013		2013-2014		2013-2015

1

All derivative instruments held for trading have been entered into for risk management purposes and are subject to the Company's risk management strategies, policies and limits. These include derivatives that have not been
designated as hedges or do not qualify for hedge accounting treatment but have been entered into as economic hedges to manage the Company's exposures to market risk.

2

Fair values equal carrying values.

3

Volumes for power and natural gas derivatives are in GWh and billion cubic feet (Bcf), respectively.

4

Realized and unrealized gains and losses on held for trading derivative instruments used to purchase and sell power and natural gas are included net in Revenues. Realized and unrealized gains and losses on interest rate
and foreign exchange derivative financial instruments held for trading are included in Interest Expense and Interest Income and Other, respectively. The effective portion of the change in fair value of derivative
instruments in hedging relationships is initially recognized in OCI and reclassified to Revenues, Interest Expense and Interest Income and Other, as appropriate, as the original hedged item settles.

2012 Consolidated financial statements -- 151

5

All hedging relationships are designated as cash flow hedges except for interest rate derivative instruments designated as fair value hedges with a fair value of $10 million and a notional amount of
US$350 million. In 2012, net realized gains on fair value hedges were $7 million and were included in Interest Expense. In 2012, the Company did not record any amounts in Net Income related to
ineffectiveness for fair value hedges.

6

In 2012, there were no gains or losses included in Net Income relating to discontinued cash flow hedges where it was probable that the anticipated transaction would not occur.

Derivative Instruments Summary
Information for the Company's derivative instruments for 2011, excluding hedges of the Company's net investment in foreign operations, is as follows:

at December 31			2011
(all amounts in Canadian millions unless otherwise indicated)			Power		Natural Gas		Foreign Exchange		Interest
Derivative Instruments Held for Trading1
Fair Values2
	Assets		$185		$176		$3		$22
	Liabilities		$(192	)	$(212	)	$(14	)	$(22	)
Notional Values
	Volumes3
		Purchases	21,905		103		–		–
		Sales	21,334		82		–		–
	Canadian dollars		–		–		–		684
	U.S. dollars		–		–		US 1,269		US 250
	Cross-currency		–		–		47/US 37		–
Net unrealized (losses)/gains in the year4			$(2	)	$(50	)	$(4	)	$1
Net realized gains/(losses) in the year4			$42		$(74	)	$10		$1
Maturity dates			2012-2016		2012-2016		2012		2012-2016
Derivative Instruments in Hedging Relationships5,6
Fair Values2
	Assets		$16		$3		$–		$13
	Liabilities		$(277	)	$(22	)	$(38	)	$(1	)
Notional Values
	Volumes3
		Purchases	17,188		8		–		–
		Sales	8,061		–		–		–
	U.S. dollars		–		–		US 73		US 600
	Cross-currency		–		–		136/US 100		–
Net realized losses in the year4			$(165	)	$(17	)	$–		$(16	)
Maturity dates			2012-2017		2012-2013		2012-2014		2012-2015

1

All derivative instruments held for trading have been entered into for risk management purposes and are subject to the Company's risk management strategies, policies and limits. These include
derivatives that have not been designated as hedges or do not qualify for hedge accounting treatment but have been entered into as economic hedges to manage the Company's exposures to market risk.

2

Fair values equal carrying values.

3

Volumes for power and natural gas derivatives are in GWh and Bcf, respectively.

4

Realized and unrealized gains and losses on held for trading derivative instruments used to purchase and sell power and natural gas are included net in Revenues. Realized and unrealized gains and
losses on interest rate and foreign exchange derivative instruments held for trading are included in Interest Expense and Interest Income and Other, respectively. The effective portion
of the change in fair value of derivative instruments in hedging relationships is initially recognized in OCI and reclassified to Revenues, Interest Expense and Interest Income and
Other, as appropriate, as the original hedged item settles.

152 -- TransCanada Corporation

5

All hedging relationships are designated as cash flow hedges except for interest rate derivative instruments designated as fair value hedges with a fair value of $13 million and a
notional amount of US$350 million. In 2011, net realized gains on fair value hedges were $7 million and were included in Interest Expense. In 2011, the Company did not record any amounts

in Net Income related to ineffectiveness for fair value hedges.

6

In 2011, there were no gains or losses included in Net Income relating to discontinued cash flow hedges where it was probable that the anticipated transaction would not occur.

Balance Sheet Presentation of Derivative Instruments
The fair value of the derivative instruments in the Company's Balance Sheet was as follows:

at December 31 (millions of Canadian dollars)	2012		2011
Current
Other current assets (Note 5)	259		361
Accounts payable and other (Note 12)	(283	)	(485	)
Long Term
Intangible and other assets (Note 10)	187		202
Other long-term liabilities (Note 13)	(186	)	(349	)

Derivatives in Cash Flow Hedging Relationships
The components of OCI related to derivatives in cash flow hedging relationships are as follows:

	Cash Flow Hedges1
	Power			Natural Gas				Foreign Exchange			Interest
year ended December 31 (millions of Canadian dollars, pre-tax)	2012	2011		2012		2011		2012		2011	2012	2011
Change in fair value of derivative instruments recognized in OCI (effective portion)	83	(263	)	(21	)	(59	)	(1	)	5	–	(1	)
Reclassification of gains and losses on derivative instruments from AOCI to Net Income (effective portion)	147	81		54		100		–		–	18	43
Gains and losses on derivative instruments recognized in earnings (ineffective portion)	7	–		–		–		–		–	–	–

1

No amounts have been excluded from the assessment of hedge effectiveness.

Credit Risk Related Contingent Features
Derivative contracts entered into to manage market risk often contain financial assurance provisions that allow parties to the contracts to manage credit risk. These provisions may require collateral to be provided if a credit-risk-related contingent event occurs, such as a downgrade in the Company's credit rating to non-investment grade. Based on contracts in place and market prices at December 31, 2012, the aggregate fair value of all derivative instruments with credit-risk-related contingent features that were in a net liability position was $37 million (2011 – $110 million), for which the Company has provided collateral of nil (2011 – $28 million) in the normal course of business. If the credit-risk-related contingent features in these agreements were triggered on December 31, 2012, the Company would have been required to provide additional collateral of $37 million (2011 – $82 million) to its counterparties. Collateral may also need to be provided should the fair value of derivative instruments exceed pre-defined contractual exposure limit thresholds. The Company has sufficient liquidity in the form of cash and undrawn committed revolving bank lines to meet these contingent obligations should they arise.

2012 Consolidated financial statements -- 153

Fair Value Hierarchy
The Company's financial assets and liabilities recorded at fair value have been categorized into three categories based on a fair value hierarchy.

In Level I, the fair value of assets and liabilities is determined by reference to quoted prices in active markets for identical assets and liabilities that the Company has the ability to access at the measurement date.

In Level II, the fair value of interest rate and foreign exchange derivative assets and liabilities is determined using the income approach. The fair value of power and natural gas commodity assets and liabilities is determined using the market approach. Under both approaches, valuation is based on the extrapolation of inputs, other than quoted prices included within Level I, for which all significant inputs are observable directly or indirectly. Such inputs include published exchange rates, interest rates, interest rate swap curves, yield curves, and broker quotes from external data service providers. Transfers between Level I and Level II would occur when there is a change in market circumstances. There were no transfers between Level I and Level II in 2012 or 2011.

In Level III, the fair value of assets and liabilities measured on a recurring basis is determined using a market approach based on inputs that are unobservable and significant to the overall fair value measurement. Assets and liabilities measured at fair value can fluctuate between Level II and Level III depending on the proportion of the value of the contract that extends beyond the time frame for which inputs are considered to be observable. As contracts near maturity and observable market data becomes available, they are transferred out of Level III and into Level II. There were no transfers out of Level II and into Level III in 2012 or 2011.

Long-dated commodity transactions in certain markets where liquidity is low are included in Level III of the fair value hierarchy, as the related commodity prices are not readily observable. Long-term electricity prices are estimated using a third-party modelling tool which takes into account physical operating characteristics of generation facilities in the markets in which the Company operates. Inputs into the model include market fundamentals such as fuel prices, power supply additions and retirements, power demand, seasonal hydro conditions and transmission constraints. Long-term North American natural gas prices are based on a view of future natural gas supply and demand, as well as exploration and development costs. Long-term prices are reviewed by management and the Board on a periodic basis. Significant decreases in fuel prices or demand for electricity or natural gas, or increases in the supply of electricity or natural gas would result in a lower fair value measurement of contracts included in Level III.

154 -- TransCanada Corporation

The fair value of the Company's assets and liabilities measured on a recurring basis, including both current and non-current portions, are categorized as follows:

December 31 (millions of Canadian dollars,		Quoted Prices in Active Markets (Level I)				Significant Other Observable Inputs (Level II)				Significant Unobservable Inputs (Level III)				Total
pre-tax)		2012		2011		2012		2011		2012		2011		2012		2011
Derivative Instrument Assets:
	Interest rate contracts	–		–		24		35		–		–		24		35
	Foreign exchange contracts	–		–		119		142		–		–		119		142
	Power commodity contracts	–		–		213		201		2		–		215		201
	Gas commodity contracts	75		124		13		55		–		–		88		179
Derivative Instrument Liabilities:
	Interest rate contracts	–		–		(14	)	(23	)	–		–		(14	)	(23	)
	Foreign exchange contracts	–		–		(76	)	(102	)	–		–		(76	)	(102	)
	Power commodity contracts	–		–		(269	)	(454	)	(4	)	(15	)	(273	)	(469	)
	Gas commodity contracts	(95	)	(208	)	(11	)	(26	)	–		–		(106	)	(234	)
Non-Derivative Financial Instruments:
	Available-for-sale assets	44		23		–		–		–		–		44		23
		24		(61	)	(1	)	(172	)	(2	)	(15	)	21		(248	)

The following table presents the net change in the Level III fair value category:

(millions of Canadian dollars, pre-tax)	Derivatives1,2
Balance at December 31, 2010	(8	)
New contracts	1
Settlements	2
Transfers out of Level III	3
Total losses included in OCI	(13	)
Balance at December 31, 2011	(15	)
Settlements	(1	)
Transfers out of Level III	(21	)
Total gains included in Net Income	11
Total gains included in OCI	24
Balance at December 31, 2012	(2	)

1

The fair value of derivative assets and liabilities is presented on a net basis.

2

At December 31, 2012, there were unrealized gains included in Net Income attributable to derivatives that were still held at the reporting date of $1 million (2011 – nil).

A 10 per cent increase or decrease in commodity prices, with all other variables held constant, would result in a $4 million decrease or increase, respectively, in the fair value of outstanding derivative instruments included in Level III as at December 31, 2012.

2012 Consolidated financial statements -- 155

22.  CHANGES IN OPERATING WORKING CAPITAL

year ended December 31 (millions of Canadian dollars)	2012	2011		2010
Decrease/(increase) in accounts receivable	67	(15	)	(286	)
Decrease in inventories	27	3		25
Decrease/(increase) in other current assets	66	(27	)	(76	)
Increase in accounts payable and other	127	266		60
Increase/(decrease) in accrued interest	–	8		(8	)
Decrease/(Increase) in Operating Working Capital	287	235		(285	)

23.  ACQUISITIONS AND DISPOSITIONS

Energy

CrossAlta
On December 18, 2012, TransCanada purchased BP's 40 per cent interest in the assets of the Crossfield Gas Storage facility and BP's interest in CrossAlta Gas Storage & Services Ltd. (collectively CrossAlta) for $214 million in cash, net of cash acquired, resulting in the Company owning and operating 100 per cent of these operations. The acquisition will enhance TransCanada's ability to deliver reliable services to the natural gas markets in western Canada and is consistent with TransCanada's growth strategy for its natural gas storage business.

The Company measured the assets and liabilities acquired at fair value and the transaction resulted in no goodwill. Pro-forma revenues and earnings for the years ended December 31, 2012 and 2011, assuming the acquisition had occurred at the beginning of the period, would not be materially different from reported results.

Upon acquisition, TransCanada began consolidating CrossAlta. Prior to the acquisition, TransCanada applied equity accounting to its 60 per cent ownership interest in CrossAlta.

Natural Gas Pipelines

TC PipeLines, LP
On May 3, 2011, TransCanada completed the sale of a 25 per cent interest in each of GTN LLC and Bison LLC to TC PipeLines, LP for an aggregate purchase price of US$605 million which included US$81 million of long-term debt, or 25 per cent of GTN LLC's outstanding debt. GTN LLC and Bison LLC own the GTN and Bison natural gas pipelines, respectively.

On May 3, 2011, TC PipeLines, LP completed an underwritten public offering of 7,245,000 common units, including 945,000 common units purchased by the underwriters upon full exercise of an over-allotment option, at US$47.58 per unit. Net proceeds of approximately US$331 million from this offering were used to partially fund the acquisition. The acquisition was also funded by draws of US$61 million on TC PipeLines, LP's bridge loan facility and US$125 million on its US$250 million senior revolving credit facility.

As part of this offering, TransCanada made a capital contribution of approximately US$7 million to maintain its two per cent general partnership interest in TC PipeLines, LP and did not purchase any other units. As a result of the common units offering, TransCanada's ownership in TC PipeLines, LP decreased from 38.2 per cent to 33.3 per cent and an after-tax dilution gain of $30 million ($50 million pre-tax) was recorded in Additional Paid-In Capital.

156 -- TransCanada Corporation

24.  COMMITMENTS, CONTINGENCIES AND GUARANTEES

Commitments

Operating Leases
Future annual payments, net of sub-lease receipts, under the Company's operating leases for various premises, services and equipment are approximately as follows:

year ended December 31 (millions of Canadian dollars)	Minimum Lease Payments	Amounts Recoverable under Sub-leases		Net Payments
2013	82	(8	)	74
2014	80	(8	)	72
2015	80	(7	)	73
2016	81	(4	)	77
2017	80	(2	)	78
2018 and thereafter	374	(1	)	373
	777	(30	)	747

The operating lease agreements for premises, services and equipment expire at various dates through 2052, with an option to renew certain lease agreements for periods of one year to 10 years. Net rental expense on operating leases in 2012 was $84 million (2011 – $79 million; 2010 – $80 million).

TransCanada's commitments under the Alberta PPAs are considered to be operating leases and a portion of these PPAs have been subleased to third parties under similar terms and conditions. Future payments under these PPAs have been excluded from operating leases in the above table, as these payments are dependent upon plant availability and other factors. TransCanada's share of payments under the PPAs in 2012 was $303 million (2011 – $394 million; 2010 – $363 million). The generating capacities and expiry dates of the PPAs are as follows:

	Megawatts	Expiry Date
Sundance A	560	December 31, 2017
Sundance B1	353	December 31, 2020
Sheerness	756	December 31, 2020

1

Held within TransCanada's 50 per cent interest in ASTC Power Partnership.

TransCanada and its affiliates have long-term natural gas transportation and natural gas purchase arrangements as well as other purchase obligations, all of which are transacted at market prices and in the normal course of business.

Other Commitments
At December 31, 2012, TransCanada was committed to Natural Gas Pipelines capital expenditures totalling approximately $1,322 million, primarily related to construction costs related to the Alberta System and Mexico pipeline projects.

At December 31, 2012, the Company was committed to Oil Pipelines capital expenditures totalling approximately $1,732 million, primarily related to construction costs of Keystone XL and the Gulf Coast Project.

At December 31, 2012, the Company was committed to Energy capital expenditures totalling approximately $62 million and related to capital costs of the Napanee Generating Station.

2012 Consolidated financial statements -- 157

On December 15, 2011, TransCanada agreed to purchase nine Ontario solar projects from Canadian Solar Solutions Inc., with a combined capacity of 86 MW, for $476 million. Under the terms of the agreement, each of the nine solar projects will be developed and constructed by Canadian Solar Solutions Inc. using photovoltaic panels. TransCanada will purchase each project once construction and acceptance testing have been completed and operations have begun under 20-year PPAs with the Ontario Power Authority (OPA) under the Feed-in Tariff program in Ontario. TransCanada anticipates the projects will be placed in service between early 2013 and late 2014, subject to regulatory approvals.

Contingencies
TransCanada is subject to laws and regulations governing environmental quality and pollution control. At December 31, 2012, the Company had accrued approximately $37 million (2011 – $49 million) related to operating facilities, which represents the estimated amount it expects to expend to remediate the sites. However, additional liabilities may be incurred as assessments occur and remediation efforts continue.

TransCanada and its subsidiaries are subject to various legal proceedings, arbitrations and actions arising in the normal course of business. While the final outcome of such legal proceedings and actions cannot be predicted with certainty, it is the opinion of management that the resolution of such proceedings and actions will not have a material impact on the Company's consolidated financial position or results of operations.

Guarantees
TransCanada and its joint venture partners on Bruce B, Cameco Corporation and BPC Generation Infrastructure Trust (BPC), have severally guaranteed one-third of certain contingent financial obligations of Bruce B related to power sales agreements, a lease agreement and contractor services. The Bruce B guarantees have terms to 2018 except for one guarantee with no termination date that has no exposure associated with it. In addition, TransCanada and BPC have each severally guaranteed one-half of certain contingent financial obligations of Bruce A related to a sublease agreement, an agreement with the OPA to restart the Bruce A power generation units, and certain other financial obligations. The Bruce A guarantees have terms to 2019. TransCanada's share of the potential exposure under these Bruce A and Bruce B guarantees was estimated to be $897 million at December 31, 2012. The carrying amount of these Bruce Power guarantees at December 31, 2012 is estimated to be $10 million which has been included in Other Long-Term Liabilities. The Company's exposure under certain of these guarantees is unlimited.

In addition to the guarantees for Bruce Power, the Company and its partners in certain other jointly owned entities have either (i) jointly and severally, (ii) jointly or (iii) severally guaranteed the financial performance of these entities related primarily to redelivery of natural gas, PPA payments and the payment of liabilities. The guarantees have terms ranging from 2013 to 2040. TransCanada's share of the potential exposure under these assurances was estimated at December 31, 2012 to range from $43 million to a maximum of $89 million. The carrying amount of these guarantees at December 31, 2012 is estimated to be $7 million, which has been included in Other Long-Term Liabilities. For certain of these entities, any payments made by TransCanada under these guarantees in excess of its ownership interest are to be reimbursed by its partners.

25.  SUBSEQUENT EVENT

On January 15, 2013, TransCanada PipeLines Limited issued US$750 million of Senior Notes maturing January 15, 2016 and bearing interest at 0.75 per cent.

158 -- TransCanada Corporation

Supplementary information

SELECTED QUARTERLY AND ANNUAL CONSOLIDATED FINANCIAL DATA

	First	Second	Third	Fourth	Annual
Toronto Stock Exchange (Stock trading symbol TRP)
2012 (dollars)
High	44.75	43.80	46.29	47.44	47.44
Low	40.34	41.47	42.73	43.16	40.34
Close	42.83	42.67	44.74	47.02	47.02
Volume (millions of shares)	95.4	79.3	78.5	66.0	319.2
2011 (dollars)
High	39.64	43.72	43.23	44.74	44.74
Low	36.10	38.95	37.00	39.25	36.10
Close	39.31	42.35	42.54	44.53	44.53
Volume (millions of shares)	106.9	85.9	107.4	120.6	420.8
2010 (dollars)
High	37.87	38.16	38.88	39.28	39.28
Low	33.96	30.01	35.50	35.49	30.01
Close	37.22	35.61	38.17	37.99	37.99
Volume (millions of shares)	91.8	93.5	89.2	108.1	382.6
New York Stock Exchange (Stock trading symbol TRP)
2012 (U.S. dollars)
High	45.07	44.50	47.02	47.78	47.78
Low	39.74	39.87	41.68	43.54	39.74
Close	43.00	41.90	45.50	47.32	47.32
Volume (millions of shares)	39.7	29.2	20.1	20.0	109.0
2011 (U.S. dollars)
High	40.76	45.09	44.08	44.38	45.09
Low	36.12	40.37	37.29	37.58	36.12
Close	40.53	43.84	40.49	43.67	43.67
Volume (millions of shares)	30.3	23.8	51.6	48.5	154.2
2010 (U.S. dollars)
High	37.11	38.01	37.75	38.59	38.59
Low	31.58	25.80	32.86	34.77	25.80
Close	36.76	33.43	37.12	38.04	38.04
Volume (millions of shares)	17.8	23.8	19.7	23.6	84.9

TransCanada Corporation -- 159

Three year financial highlights

(millions of Canadian dollars except where indicated)		2012		2011		2010
Income Statement
Revenues		8,007		7,839		6,852
EBITDA
	Natural Gas Pipelines	2,741		2,875		2,816
	Oil Pipelines	698		587		–
	Energy	882		1,119		976
	Corporate	(97	)	(86	)	(99	)
		4,224		4,495		3,693
Depreciation		(1,375	)	(1,328	)	(1,160	)
EBIT		2,849		3,167		2,533
Interest expense and other		(891	)	(882	)	(607	)
Income taxes		(466	)	(575	)	(387	)
Sundance A PPA arbitration		(20	)	–		–
Valuation provision for MGP		–		–		(146	)
Net Income		1,472		1,710		1,393
Net income attributable to non-controlling interests		(118	)	(129	)	(115	)
Net income attributable to controlling interests		1,354		1,581		1,278
Preferred share dividends		(55	)	(55	)	(45	)
Net income attributable to common shares		1,299		1,526		1,233
Comparable earnings		1,330		1,559		1,357
Cash Flow Statement
Funds generated from operations		3,284		3,451		3,161
Decrease/(Increase) in operating working capital		287		235		(285	)
Net cash provided by operations		3,571		3,686		2,876
Capital expenditures		2,595		2,513		4,376
Acquisitions, net of cash acquired		214		–		–
Cash dividends paid on common and preferred shares		1,281		1,016		754
Balance Sheet
Assets
Plant, property and equipment		33,713		32,467		30,987
Total assets		48,333		47,338		45,249
Capitalization
Long-term debt		18,913		18,659		18,016
Junior subordinated notes		994		1,016		993
Preferred shares		1,224		1,224		1,224
Common shareholders' equity		15,687		15,570		15,133

160 -- TransCanada Corporation

		2012	2011	2010
Per Common Share Data
Net income – basic		$1.84	$2.17	$1.79
– diluted		$1.84	$2.17	$1.78
Comparable earnings per share		$1.89	$2.22	$1.96
Dividends declared		$1.76	$1.68	$1.60
Book Value1,6		$22.24	$22.12	$21.74
Market Price
Toronto Stock Exchange ($Cdn)
	High	47.44	44.74	39.28
	Low	40.34	36.10	30.01
	Close	47.02	44.53	37.99
	Volume (millions of shares)	319.20	420.80	382.60
New York Stock Exchange ($US)
	High	47.78	45.09	38.59
	Low	39.74	36.12	25.80
	Close	47.32	43.67	38.04
	Volume (millions of shares)	109.00	154.20	84.94
Common shares outstanding (millions)
	Average for the year	704.6	701.6	690.5
	End of year	705.5	703.9	696.2
Registered common shareholders1		31,449	32,113	32,639
Per Preferred Share Data (dollars)
Dividends declared:
Series 1, 3 and 5 cumulative first preferred shares2		$3.25	$3.25	$2.60
Financial Ratios
Dividend yield3,4		3.7%	3.8%	4.2%
Price/earnings multiple4,5		25.5	20.5	21.2
Price/book multiple4,6		2.1	2.0	1.7
Debt to debt plus shareholders' equity7		56%	56%	56%
Total shareholder return8		9.9%	22.2%	9.7%
Earnings to fixed charges9		2.2	2.6	1.9

1

As at December 31.

2

Preferred shares were issued for Series 1, 3 and 5 in September 2009, March 2010 and June 2010, respectively, with annual dividend rates of $1.15, $1.00 and $1.10 per share, respectively. The first quarterly dividends for each series were paid in December 2009, June 2010 and November 2010, respectively.

3

The dividend yield is determined by dividing dividends per common share declared during the year by price per common share as at December 31.

4

Price per common share refers to market price per share as reported on the Toronto Stock Exchange as at December 31.

5

The price/earnings multiple is determined by dividing price per common share by the basic net income per share.

6

The price/book multiple is determined by dividing price per common share by book value per common share as calculated by dividing common shareholders' equity by the number of common shares outstanding as at December 31.

7

Debt includes Junior Subordinated Notes, total long-term debt, including the current portion of long-term debt, plus preferred securities as at December 31 and excludes long-term debt of joint ventures. Shareholders' equity in this ratio is as at December 31.

8

Total shareholder return is the sum of the change in price per common share plus the dividends received plus the impact of dividend re-investment in a calendar year, expressed as a percentage of the value of shares at the end of the previous year.

9

The earnings to fixed charges ratio is determined by dividing earnings by fixed charges. Earnings is calculated as the sum of EBIT and interest income and other, less income attributable to non-controlling interests with interest expense and undistributed earnings of investments accounted for by the equity method. Fixed charges is calculated as the sum of interest expense, and capitalized interest.

TransCanada Corporation -- 161

Investor information

STOCK EXCHANGES, SECURITIES AND SYMBOLS

TransCanada Corporation
Common shares are listed on the Toronto and New York stock exchanges under the symbol: TRP

First Preferred Shares, Series 1 are listed on the Toronto Stock Exchange under the symbol: TRP.PR.A

First Preferred Shares, Series 3 are listed on the Toronto Stock Exchange under the symbol: TRP.PR.B

First Preferred Shares, Series 5 are listed on the Toronto Stock Exchange under the symbol: TRP.PR.C

TransCanada PipeLines Limited (TCPL)*
Preferred shares are listed on the Toronto Stock Exchange under the following symbols:

First Preferred Shares, Series U: TCA.PR.X and Series Y: TCA.PR.Y

Annual Meeting    The annual and special meeting of shareholders is scheduled for April 26, 2013 at 10:00 a.m. (Mountain Daylight Time) at the BMO Centre, Calgary, Alberta.

Dividend Payment Dates    Scheduled common share dividend payment dates in 2013 are January 31, April 30, July 31 and October 31.

For information on dividend payment dates for TransCanada Corporation and TCPL Preferred Shares visit our website at www.transcanada.com.

Dividend Reinvestment and Share Purchase Plan    TransCanada's dividend reinvestment and share purchase plan (Plan) allows common and preferred shareholders of TransCanada and preferred shareholders of TCPL to purchase common shares of TransCanada by reinvesting their cash dividends without incurring brokerage or administrative fees. Participants in the Plan may also buy additional common shares, up to Cdn$10,000 per quarter. For more information on the Plan please contact our Plan agent, Computershare Trust Company of Canada or visit our website at www.transcanada.com.

TRANSFER AGENTS, REGISTRARS AND TRUSTEE

TransCanada Corporation Common Shares    Computershare Trust Company of Canada (Montréal, Toronto, Calgary and Vancouver) and Computershare Trust Company, N.A. (Golden)

TransCanada Corporation First Preferred Shares, Series 1    Computershare Trust Company of Canada (Montréal, Toronto, Calgary and Vancouver)

TransCanada Corporation First Preferred Shares, Series 3    Computershare Trust Company of Canada (Montréal, Toronto, Calgary and Vancouver)

TransCanada Corporation First Preferred Shares, Series 5    Computershare Trust Company of Canada (Montréal, Toronto, Calgary and Vancouver)

TCPL First Preferred Shares, Series U and Series Y    Computershare Trust Company of Canada (Montréal, Toronto, Calgary and Vancouver)

TCPL Debentures

Canadian Series: BNY Trust Company of Canada (Halifax, Montréal, Toronto, Calgary and Vancouver)

11.10% series N	10.50% series P	11.90% series S	11.80% series U
9.80% series V	9.45% series W

U.S. Series: The Bank of New York (New York) 9.875% and 8.625%

*

TCPL is a wholly owned subsidiary of TransCanada Corporation.

162 -- TransCanada Corporation

TCPL Canadian Medium-Term Notes    CIBC Mellon Trust Company (Halifax, Montréal, Toronto, Calgary and Vancouver)

TCPL U.S. Medium-Term Notes and Senior Notes    The Bank of New York Mellon (New York)

TCPL U.S. Junior Subordinated Notes    The Bank of Nova Scotia Trust Company of New York

NOVA Gas Transmission Ltd. (NGTL) Debentures

Canadian Series: BNY Trust Company of Canada (Halifax, Montreal, Toronto, Calgary and Vancouver)

11.20% series 18 12.20% series 20 12.20% series 21   9.90% series 23

U.S. Series: U.S. Bank Trust National Association (New York) 7.875%

NGTL Canadian Medium-Term Notes    BNY Trust Company of Canada (Halifax, Montreal, Toronto, Calgary and Vancouver)

NGTL U.S. Medium-Term Notes    U.S. Bank Trust National Association (New York)

REGULATORY FILINGS

Annual Information Form    TransCanada's 2012 Annual Information Form, as filed with Canadian securities commissions and as filed under Form 40-F with the SEC, is available on our website at www.transcanada.com.

A printed copy may be obtained from:

Corporate Secretary, TransCanada Corporation, 450 1st Street SW, Calgary, Alberta, Canada T2P 5H1

TransCanada Corporation -- 163

Shareholder assistance

If you are a registered shareholder and have questions regarding your account, please contact our transfer agent in writing, by telephone or e-mail at:

Computershare Trust Company of Canada, 100 University Avenue, 9th Floor, Toronto, Ontario, Canada M5J 2Y1

Toll-free: 1.800.340.5024

Telephone: 1.514.982.7959

E-mail: shareholder@computershare.com

www.computershare.com

If you hold your shares in a brokerage account (beneficial shareholder), questions should be directed to your broker on all administrative matters.

If you would like to receive quarterly reports, please contact Computershare or visit our website at www.transcanada.com.

Electronic Proxy Voting and Delivery of Documents    TransCanada is pleased to offer registered and beneficial shareholders the ability to receive their documents (annual report, management information circular, notice of meeting and view-only proxy form) and vote online.

In 2013, registered shareholders who opt to receive their documents electronically will have a tree planted on their behalf through eTree. For more information and to sign up online, registered shareholders can visit www.etree.ca/transcanada.

Shareholders who do not have access to e-mail, or who still prefer to receive their proxy materials by mail also have the ability to choose whether to receive TransCanada's annual report by regular mail. Each year, shareholders are required to renew their option and will receive a notification for doing so. The annual report is available on the TransCanada website at www.transcanada.com at the same time that the report is mailed to shareholders.

Electronic delivery and the ability to opt out of receiving the annual report by mail, provides increased convenience to shareholders, benefits to the environment and reduced mailing and printing costs for the company.

TransCanada in the Community    TransCanada's annual Corporate Responsibility Report is available at www.transcanada.com. If you would like to receive a copy of this report by mail, please contact:

Communications    450 1st Street SW, Calgary, Alberta T2P 5H1, 1.403.920.2000 or 1.800.661.3805 or Communications@transcanada.com

Visit our website at www.transcanada.com to access TransCanada's corporate and financial information, including quarterly reports, news releases, real-time conference call webcasts and investor presentations.

Si vous désirez vous procurer un exemplaire de ce rapport en français, veuillez consulter notre site web ou vous adresser par écrit à TransCanada Corporation, bureau du secrétaire.

164 -- TransCanada Corporation

Board of directors

(as at December 31, 2012)

S. Barry Jackson1,2
Chairman
TransCanada Corporation
Calgary, Alberta

Russell K. Girling
President and CEO
TransCanada Corporation
Calgary, Alberta

Kevin E. Benson1,3
Corporate Director
Calgary, Alberta

Derek H. Burney, O.C.1,4
Senior Strategic Advisor
Norton Rose Canada LLP
Ottawa, Ontario

E. Linn Draper2,6
Former Chairman, President and CEO
American Electric Power Co., Inc. (AEP)
Lampasas, Texas

The Hon. Paule Gauthier, P.C., O.C., O.Q., Q.C.2,5
Senior Partner
Stein Monast L.L.P.
Québec, Québec

Paul L. Joskow1,4
President
Alfred P. Sloan Foundation
New York, New York

John A. MacNaughton4,7
Chairman
Business Development Bank of Canada
Toronto, Ontario

Paula Rosput Reynolds2,5
President and CEO
PreferWest LLC
Seattle, Washington

W. Thomas Stephens5,8
Former Chairman and
Chief Executive Officer
Boise Cascade, LLC
Greenwood Village, Colorado

D. Michael G. Stewart4,5
Corporate Director
Calgary, Alberta

Richard E. Waugh1
President and CEO
Scotiabank
Toronto, Ontario

1

Member, Governance Committee

2

Member, Human Resources Committee

3

Chair, Audit Committee

4

Member, Audit Committee

5

Member, Health, Safety and Environment Committee

6

Chair, Health, Safety and Environment Committee

7

Chair, Governance Committee (retired January 9, 2013)

8

Chair, Human Resources Committee

TransCanada Corporation -- 165

Corporate governance

Please refer to TransCanada's Notice of 2013 annual and special meeting of shareholders and Management information circular for the company's statement of corporate governance.

TransCanada's Corporate Governance Guidelines, Board charter, Committee charters, Chair and Chief Executive Officer terms of reference and code of business ethics are available on our website at www.transcanada.com. Also available on our website is a summary of the significant ways in which TransCanada's corporate governance practices differ from those required to be followed by U.S. domestic companies under the New York Stock Exchange's listing standards.

Additional information relating to the company is filed with securities regulators in Canada on SEDAR (www.sedar.com) and in the United States on EDGAR (www.sec.gov). The documents referred to in this Annual Report may be obtained free of charge by contacting TransCanada's Corporate Secretary at 450 1st Street SW, Calgary, Alberta, Canada T2P 5H1, or by telephoning 1.800.661.3805.

Ethics Help-Line The Audit Committee of the Board of Directors has established an anonymous and confidential toll-free telephone number for employees, contractors and others to call with respect to accounting irregularities and ethical violations. The Ethics Help-Line number is 1.888.920.2042.

166 -- TransCanada Corporation

[EXECUTIVE LEADERSHIP TEAM from left to right Dennis McConaghy, Executive Vice-President, Corporate Development | Sean McMaster, Executive Vice-President, Stakeholder Relations and General Counsel | Greg Lohnes, Executive Vice-President, Operations and Major Projects | Russ Girling, President and Chief Executive Officer | Don Marchand, Executive Vice-President and Chief Financial Officer | Wendy Hanrahan, Executive Vice-President, Corporate Services | Alex Pourbaix, President, Energy and Oil Pipelines | Karl Johannson, Executive Vice-President and President, Natural Gas Pipelines

OUR VALUES | INTEGRITY | RESPONSIBILITY | COLLABORATION | INNOVATION OUR VISION To be the leading energy infrastructure company in North America, with a strong focus on pipelines and power generation opportunities located in regions where we have or can develop significant competitive advantage. Please recycle TransCanada Corporation TransCanada Tower 450 – First Street SW Calgary, Alberta T2P 5H1 1.403.920.2000 1.800.661.3805 Printed in Canada March 2013 Visit www.transcanada.com for more information on: Our pipelines and energy businesses • Projects and initiatives • Corporate responsibility • Corporate governance • Investor services TransCanada welcomes questions from shareholders and investors. Please contact: David Moneta, Vice-President, Investor Relations 1.800.361.6522 (Canada and U.S. Mainland) Follow us on Twitter: @TransCanada

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AUDITED CONSOLIDATED ANNUAL FINANCIAL STATEMENTS AND MANAGEMENT'S DISCUSSION & ANALYSIS
UNDERTAKING
DISCLOSURE CONTROLS AND PROCEDURES
AUDIT COMMITTEE FINANCIAL EXPERT
CODE OF ETHICS
PRINCIPAL ACCOUNTANT FEES AND SERVICES
OFF-BALANCE SHEET ARRANGEMENTS
TABULAR DISCLOSURE OF CONTRACTUAL OBLIGATIONS
IDENTIFICATION OF THE AUDIT COMMITTEE
FORWARD-LOOKING INFORMATION
SIGNATURES

EX-23.1

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Exhibit 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Board of Directors of TransCanada Corporation

We consent to the use of our reports, each dated February 11, 2013, with respect to the consolidated financial statements and the effectiveness of internal control over financial reporting included in this annual report on Form 40-F.

We also consent to the incorporation by reference of such reports in TransCanada Corporation's:

—

Registration Statements No. 333-5916, No. 333-8470, No. 333-9130, No. 333-184074 and No. 333-151736 on Form S-8;

—

Registration Statements No. 33-13564 and No. 333-6132 on Form F-3; and,

—

Registration Statements No. 333-151781, No. 333-161929, and No. 333-177788 on Form F-10.

/s/ KPMG LLP
Chartered Accountants
Calgary, Canada

February 13, 2013

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Exhibit 23.1

EX-31.1

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Exhibit 31.1

Certifications

I, Russell K. Girling, certify that:

1.

I have reviewed this annual report on Form 40-F of TransCanada Corporation;



2.

Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;



3.

Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the issuer as of, and for, the periods presented in this report;



4.

The issuer's other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the issuer and have:



(a)

Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the issuer, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;



(b)

Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;



(c)

Evaluated the effectiveness of the issuer's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and



(d)

Disclosed in this report any change in the issuer's internal control over financial reporting that occurred during the period covered by the annual report that has materially affected, or is reasonably likely to materially affect, the issuer's internal control over financial reporting; and



5.

The issuer's other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the issuer's auditors and the audit committee of the issuer's board of directors (or persons performing the equivalent functions):



(a)

All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the issuer's ability to record, process, summarize and report financial information; and



(b)

Any fraud, whether or not material, that involves management or other employees who have a significant role in the issuer's internal control over financial reporting.

Dated February 13, 2013

/s/ RUSSELL K. GIRLING
Russell K. Girling
President and Chief Executive Officer

C-1

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Exhibit 31.1

Certifications

EX-31.2

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Exhibit 31.2

Certifications

I, Donald R. Marchand, certify that:

1.

I have reviewed this annual report on Form 40-F of TransCanada Corporation;



2.

Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;



3.

Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the issuer as of, and for, the periods presented in this report;



4.

The issuer's other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the issuer and have:



(a)

Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the issuer, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;



(b)

Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;



(c)

Evaluated the effectiveness of the issuer's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and



(d)

Disclosed in this report any change in the issuer's internal control over financial reporting that occurred during the period covered by the annual report that has materially affected, or is reasonably likely to materially affect, the issuer's internal control over financial reporting; and



5.

The issuer's other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the issuer's auditors and the audit committee of the issuer's board of directors (or persons performing the equivalent functions):



(a)

All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the issuer's ability to record, process, summarize and report financial information; and



(b)

Any fraud, whether or not material, that involves management or other employees who have a significant role in the issuer's internal control over financial reporting.

Dated February 13, 2013

/s/ DONALD R. MARCHAND
Donald R. Marchand
Executive Vice-President and Chief Financial Officer

C-2

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Exhibit 31.2

Certifications

EX-32.1

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Exhibit 32.1

TRANSCANADA CORPORATION

450 – 1^st Street S.W.
Calgary, Alberta, Canada
T2P 5H1

CERTIFICATION OF CHIEF EXECUTIVE OFFICER
UNDER SECTION 906 OF SARBANES-OXLEY ACT OF 2002

I, Russell K. Girling, the Chief Executive Officer of TransCanada Corporation (the "Company"), in compliance with 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, hereby certify, in connection with the Company's Annual Report as filed on Form 40-F for the fiscal year ending December 31, 2012 with the Securities and Exchange Commission (the "Report"), that:

1.

The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and



2.

The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ RUSSELL K. GIRLING
Russell K. Girling
Chief Executive Officer
February 13, 2013

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Exhibit 32.1

TRANSCANADA CORPORATION
CERTIFICATION OF CHIEF EXECUTIVE OFFICER UNDER SECTION 906 OF SARBANES-OXLEY ACT OF 2002

EX-32.2

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Exhibit 32.2

TRANSCANADA CORPORATION

450 – 1^st Street S.W.
Calgary, Alberta, Canada
T2P 5H1

CERTIFICATION OF CHIEF FINANCIAL OFFICER
UNDER SECTION 906 OF SARBANES-OXLEY ACT OF 2002

I, Donald R. Marchand, the Chief Financial Officer of TransCanada Corporation (the "Company"), in compliance with 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, hereby certify, in connection with the Company's Annual Report as filed on Form 40-F for the fiscal year ending December 31, 2012 with the Securities and Exchange Commission (the "Report"), that:

1.

The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and



2.

The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ DONALD R. MARCHAND
Donald R. Marchand
Chief Financial Officer
February 13, 2013

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Exhibit 32.2

TRANSCANADA CORPORATION
CERTIFICATION OF CHIEF FINANCIAL OFFICER UNDER SECTION 906 OF SARBANES-OXLEY ACT OF 2002

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PLANT, PROPERTY AND EQUIPMENT (Tables)

12 Months Ended

Dec. 31, 2012

PLANT, PROPERTY AND EQUIPMENT

Schedule of plant, property and equipment

		2012			2011
at December 31 (millions of Canadian dollars)		Cost	Accumulated Depreciation	Net Book Value	Cost	Accumulated Depreciation	Net Book Value
Natural Gas Pipelines1
Canadian Mainline
	Pipeline	8,801	5,192	3,609	8,785	4,958	3,827
	Compression	3,370	1,880	1,490	3,362	1,765	1,597
	Metering and other	391	182	209	383	175	208
		12,562	7,254	5,308	12,530	6,898	5,632
	Under construction	163	–	163	28	–	28
		12,725	7,254	5,471	12,558	6,898	5,660
Alberta System
	Pipeline	7,214	3,221	3,993	6,701	3,062	3,639
	Compression	1,885	1,177	708	1,778	1,109	669
	Metering and other	958	420	538	931	409	522
		10,057	4,818	5,239	9,410	4,580	4,830
	Under construction	463	–	463	368	–	368
		10,520	4,818	5,702	9,778	4,580	5,198
ANR
	Pipeline	864	49	815	858	47	811
	Compression	514	72	442	510	72	438
	Metering and other	520	81	439	524	59	465
		1,898	202	1,696	1,892	178	1,714
	Under construction	63	–	63	20	–	20
		1,961	202	1,759	1,912	178	1,734
Other Natural Gas Pipelines
	GTN	1,565	411	1,154	1,589	370	1,219
	Great Lakes	1,544	750	794	1,577	741	836
	Foothills	1,634	1,062	572	1,630	1,005	625
	Mexico	536	59	477	547	39	508
	Other2	1,548	226	1,322	1,576	187	1,389
		6,827	2,508	4,319	6,919	2,342	4,577
	Under construction	297	–	297	33	–	33
		7,124	2,508	4,616	6,952	2,342	4,610
		32,330	14,782	17,548	31,200	13,998	17,202
Oil Pipelines
Keystone
	Pipeline	4,897	177	4,720	4,904	80	4,824
	Pumping equipment	1,560	75	1,485	1,502	38	1,464
	Tanks and other	372	23	349	548	15	533
		6,829	275	6,554	6,954	133	6,821
Under construction3		3,678	–	3,678	2,433	–	2,433
		10,507	275	10,232	9,387	133	9,254
Energy
Natural Gas – Ravenswood		1,799	290	1,509	1,799	220	1,579
Natural Gas – Other4		2,975	746	2,229	3,002	665	2,337
Hydro		634	106	528	620	90	530
Wind5		907	118	789	843	88	755
Natural Gas Storage6		677	83	594	454	78	376
Other		134	86	48	131	83	48
		7,126	1,429	5,697	6,849	1,224	5,625
Under construction – Other		136	–	136	308	–	308
		7,262	1,429	5,833	7,157	1,224	5,933
Corporate		154	54	100	129	51	78
		50,253	16,540	33,713	47,873	15,406	32,467

1

In 2012, the Company capitalized $32 million (2011 – $23 million) relating to the equity portion of AFUDC for natural gas pipelines with a corresponding amount recorded in Interest Income and Other.

2

Includes in service assets of Bison, Portland, North Baja, Tuscarora and Ventures LP. Bison went in service in January 2011.

3

Includes $2.0 billion and $1.5 billion for Keystone XL and the Gulf Coast Project, respectively, at December 31, 2012 (2011 – $1.5 billion and $0.9 billion, respectively). Keystone XL remains subject to regulatory approvals.

4

Includes facilities with long-term PPAs that are accounted for as operating leases, including Coolidge which went in service in May 2011. The cost and accumulated depreciation of these facilities
were $601 million and $55 million, respectively, at December 31, 2012 (2011 – $605 million and $34 million, respectively). Revenues of $73 million were recognized in 2012 (2011 – $53 million; 2010 – $15 million)
through the sale of electricity under the related PPAs.

5

Includes Cartier phase two of Gros-Morne effective November 2012, phase one of Gros-Morne effective November 2011, and Montagne-Sèche effective November 2011.

6

Includes acquisition in December 2012 of BP's 40 per cent interest in the assets of the Crossfield Gas Storage facility and BP's interest in CrossAlta Gas Storage & Services Ltd.

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RISK MANAGEMENT AND FINANCIAL INSTRUMENTS (Tables)

12 Months Ended

Dec. 31, 2012

Derivative financial instruments

Schedule of the carrying and fair values of non-derivative financial instruments

	2012		2011
at December 31 (millions of Canadian dollars)	Carrying Amount1	Fair Value2	Carrying Amount1	Fair Value2
Financial Assets
Cash and cash equivalents	551	551	654	654
Accounts receivable and other3	1,288	1,337	1,359	1,403
Available for sale assets3	44	44	23	23
	1,883	1,932	2,036	2,080
Financial Liabilities4
Notes payable	2,275	2,275	1,863	1,863
Accounts payable and other long-term liabilities5	1,535	1,535	1,329	1,329
Accrued interest	368	368	365	365
Long-term debt	18,913	24,573	18,659	23,757
Junior subordinated notes	994	1,054	1,016	1,027
	24,085	29,805	23,232	28,341

1

Recorded at amortized cost, except for $350 million (2011 – $350 million) of Long-Term Debt that is attributed to hedged risk and recorded at fair value. This debt, which is recorded at fair value on a recurring
basis, is classified in Level II of the fair value hierarchy using the income approach based on interest rates from external data service providers.

2

The fair value measurement of financial assets and liabilities recorded at amortized cost for which the fair value is not equal to the carrying value would be included in Level II of the fair value hierarchy using the
income approach based on interest rates from external data service providers.

3

At December 31, 2012, the Consolidated Balance Sheet included financial assets of $1.1 billion (2011 – $1.1 billion) in Accounts Receivable, $40 million (2011 – $41 million)
in Other Current Assets and $240 million (2011 – $247 million) in Intangible and Other Assets.

4

Consolidated Net Income in 2012 included losses of $10 million (2011 – losses of $13 million) for fair value adjustments attributable to the hedged interest rate risk associated with interest
rate swap fair value hedging relationships on US$350 million of debt at December 31, 2012 (2011 – US$350 million). There were no other unrealized gains or losses from fair value adjustments to the
non-derivative financial instruments.

5

At December 31, 2012, the Consolidated Balance Sheet included financial liabilities of $1.5 billion (2011 – $1.2 billion) in Accounts Payable and $38 million (2011 – $137 million)
in Other Long-Term Liabilities.

Schedule of the remaining contractual maturities for the non-derivative financial liabilities, including both the principal and interest cash flows

	Payments Due by Period
(millions of Canadian dollars)	Total	2013	2014 and 2015	2016 and 2017	2018 and Thereafter
Notes payable	2,275	2,275	–	–	–
Long-term debt	18,913	894	2,531	1,769	13,719
Junior subordinated notes	994	–	–	–	994
	22,182	3,169	2,531	1,769	14,713

1

The anticipated timing of settlement of derivative contracts is presented in the Derivatives Instrument Summary in this note.

Interest Payments on Financial Liabilities

	Payments Due by Period
(millions of Canadian dollars)	Total	2013	2014 and 2015	2016 and 2017	2018 and Thereafter
Long-term debt	15,377	1,154	2,125	1,908	10,190
Junior subordinated notes	3,443	63	126	126	3,128
	18,820	1,217	2,251	2,034	13,318

Schedule of fair value of the derivative financial instruments in the Company's Balance Sheet

at December 31 (millions of Canadian dollars)	2012		2011
Current
Other current assets (Note 5)	259		361
Accounts payable and other (Note 12)	(283	)	(485	)
Long Term
Intangible and other assets (Note 10)	187		202
Other long-term liabilities (Note 13)	(186	)	(349	)

Schedule of components of OCI related to derivates in cash flow hedging relationships

	Cash Flow Hedges1
	Power			Natural Gas				Foreign Exchange			Interest
year ended December 31 (millions of Canadian dollars, pre-tax)	2012	2011		2012		2011		2012		2011	2012	2011
Change in fair value of derivative instruments recognized in OCI (effective portion)	83	(263	)	(21	)	(59	)	(1	)	5	–	(1	)
Reclassification of gains and losses on derivative instruments from AOCI to Net Income (effective portion)	147	81		54		100		–		–	18	43
Gains and losses on derivative instruments recognized in earnings (ineffective portion)	7	–		–		–		–		–	–	–

1

No amounts have been excluded from the assessment of hedge effectiveness.

Schedule of fair value of the Company's assets and liabilities measured on a recurring basis, including both current and non-current portions

December 31 (millions of Canadian dollars,		Quoted Prices in Active Markets (Level I)				Significant Other Observable Inputs (Level II)				Significant Unobservable Inputs (Level III)				Total
pre-tax)		2012		2011		2012		2011		2012		2011		2012		2011
Derivative Instrument Assets:
	Interest rate contracts	–		–		24		35		–		–		24		35
	Foreign exchange contracts	–		–		119		142		–		–		119		142
	Power commodity contracts	–		–		213		201		2		–		215		201
	Gas commodity contracts	75		124		13		55		–		–		88		179
Derivative Instrument Liabilities:
	Interest rate contracts	–		–		(14	)	(23	)	–		–		(14	)	(23	)
	Foreign exchange contracts	–		–		(76	)	(102	)	–		–		(76	)	(102	)
	Power commodity contracts	–		–		(269	)	(454	)	(4	)	(15	)	(273	)	(469	)
	Gas commodity contracts	(95	)	(208	)	(11	)	(26	)	–		–		(106	)	(234	)
Non-Derivative Financial Instruments:
	Available-for-sale assets	44		23		–		–		–		–		44		23
		24		(61	)	(1	)	(172	)	(2	)	(15	)	21		(248	)

Schedule of net change in the Level III fair value category

(millions of Canadian dollars, pre-tax)	Derivatives1,2
Balance at December 31, 2010	(8	)
New contracts	1
Settlements	2
Transfers out of Level III	3
Total losses included in OCI	(13	)
Balance at December 31, 2011	(15	)
Settlements	(1	)
Transfers out of Level III	(21	)
Total gains included in Net Income	11
Total gains included in OCI	24
Balance at December 31, 2012	(2	)

1

The fair value of derivative assets and liabilities is presented on a net basis.

2

At December 31, 2012, there were unrealized gains included in Net Income attributable to derivatives that were still held at the reporting date of $1 million (2011 – nil).

Derivative financial instrument, excluding net investment hedges

Derivative financial instruments

Schedule of fair values and notional or principal amounts for the derivatives

at December 31			2012
(all amounts in Canadian millions unless otherwise indicated)			Power		Natural Gas		Foreign Exchange		Interest
Derivative Instruments Held for Trading1
Fair Values2
	Assets		$139		$88		$1		$14
	Liabilities		$(176	)	$(104	)	$(2	)	$(14	)
Notional Values
	Volumes3
		Purchases	31,135		83		–		–
		Sales	31,066		65		–		–
	Canadian dollars		–		–		–		620
	U.S. dollars		–		–		US 1,408		US 200
	Cross-currency		–		–		–		–
Net unrealized (losses)/gains in the year4			$(30	)	$2		$(1	)	$–
Net realized gains/(losses) in the year4			$5		$(10	)	$26		$–
Maturity dates			2013-2017		2013-2016		2013		2013-2016
Derivative Instruments in Hedging Relationships5,6
Fair Values2
	Assets		$76		$–		$–		$10
	Liabilities		$(97	)	$(2	)	$(38	)	$–
Notional Values
	Volumes3
		Purchases	15,184		1		–		–
		Sales	7,200		–		–		–
	U.S. dollars		–		–		US 12		US 350
	Cross-currency		–		–		136/US 100		–
Net realized (losses)/gains in the year4			$(130	)	$(23	)	$–		$7
Maturity dates			2013-2018		2013		2013-2014		2013-2015

1

All derivative instruments held for trading have been entered into for risk management purposes and are subject to the Company's risk management strategies, policies and limits. These include derivatives that have not been
designated as hedges or do not qualify for hedge accounting treatment but have been entered into as economic hedges to manage the Company's exposures to market risk.

2

Fair values equal carrying values.

3

Volumes for power and natural gas derivatives are in GWh and billion cubic feet (Bcf), respectively.

4

Realized and unrealized gains and losses on held for trading derivative instruments used to purchase and sell power and natural gas are included net in Revenues. Realized and unrealized gains and losses on interest rate
and foreign exchange derivative financial instruments held for trading are included in Interest Expense and Interest Income and Other, respectively. The effective portion of the change in fair value of derivative
instruments in hedging relationships is initially recognized in OCI and reclassified to Revenues, Interest Expense and Interest Income and Other, as appropriate, as the original hedged item settles.

5

All hedging relationships are designated as cash flow hedges except for interest rate derivative instruments designated as fair value hedges with a fair value of $10 million and a notional amount of
US$350 million. In 2012, net realized gains on fair value hedges were $7 million and were included in Interest Expense. In 2012, the Company did not record any amounts in Net Income related to
ineffectiveness for fair value hedges.

6

In 2012, there were no gains or losses included in Net Income relating to discontinued cash flow hedges where it was probable that the anticipated transaction would not occur.

at December 31			2011
(all amounts in Canadian millions unless otherwise indicated)			Power		Natural Gas		Foreign Exchange		Interest
Derivative Instruments Held for Trading1
Fair Values2
	Assets		$185		$176		$3		$22
	Liabilities		$(192	)	$(212	)	$(14	)	$(22	)
Notional Values
	Volumes3
		Purchases	21,905		103		–		–
		Sales	21,334		82		–		–
	Canadian dollars		–		–		–		684
	U.S. dollars		–		–		US 1,269		US 250
	Cross-currency		–		–		47/US 37		–
Net unrealized (losses)/gains in the year4			$(2	)	$(50	)	$(4	)	$1
Net realized gains/(losses) in the year4			$42		$(74	)	$10		$1
Maturity dates			2012-2016		2012-2016		2012		2012-2016
Derivative Instruments in Hedging Relationships5,6
Fair Values2
	Assets		$16		$3		$–		$13
	Liabilities		$(277	)	$(22	)	$(38	)	$(1	)
Notional Values
	Volumes3
		Purchases	17,188		8		–		–
		Sales	8,061		–		–		–
	U.S. dollars		–		–		US 73		US 600
	Cross-currency		–		–		136/US 100		–
Net realized losses in the year4			$(165	)	$(17	)	$–		$(16	)
Maturity dates			2012-2017		2012-2013		2012-2014		2012-2015

1

All derivative instruments held for trading have been entered into for risk management purposes and are subject to the Company's risk management strategies, policies and limits. These include
derivatives that have not been designated as hedges or do not qualify for hedge accounting treatment but have been entered into as economic hedges to manage the Company's exposures to market risk.

2

Fair values equal carrying values.

3

Volumes for power and natural gas derivatives are in GWh and Bcf, respectively.

4

Realized and unrealized gains and losses on held for trading derivative instruments used to purchase and sell power and natural gas are included net in Revenues. Realized and unrealized gains and
losses on interest rate and foreign exchange derivative instruments held for trading are included in Interest Expense and Interest Income and Other, respectively. The effective portion
of the change in fair value of derivative instruments in hedging relationships is initially recognized in OCI and reclassified to Revenues, Interest Expense and Interest Income and
Other, as appropriate, as the original hedged item settles.

5

All hedging relationships are designated as cash flow hedges except for interest rate derivative instruments designated as fair value hedges with a fair value of $13 million and a
notional amount of US$350 million. In 2011, net realized gains on fair value hedges were $7 million and were included in Interest Expense. In 2011, the Company did not record any amounts

in Net Income related to ineffectiveness for fair value hedges.

6

In 2011, there were no gains or losses included in Net Income relating to discontinued cash flow hedges where it was probable that the anticipated transaction would not occur.

Designated as a net investment hedge

Derivative financial instruments

Schedule of fair values and notional or principal amounts for the derivatives

	2012		2011
at December 31 (millions of Canadian dollars)	Fair Value1	Notional or Principal Amount	Fair Value1		Notional or Principal Amount
U.S. dollar cross-currency swaps (maturing 2013 to 2019)2	82	US 3,800	93		US 3,850
U.S. dollar forward foreign exchange contracts (maturing 2013)	–	US 250	(4	)	US 725
	82	US 4,050	89		US 4,575

1

Fair values equal carrying values.

2

Net Income in 2012 included net realized gains of $30 million (2011 – gains of $27 million) related to the interest component of cross-currency swap settlements.

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INCOME TAXES (Tables)

12 Months Ended

Dec. 31, 2012

INCOME TAXES

Schedule of provision for income taxes

year ended December 31 (millions of Canadian dollars)	2012	2011		2010
Current
Canada	167	212		31
Foreign	14	(2	)	(170	)
	181	210		(139	)
Deferred
Canada	69	139		175
Foreign	216	226		351
	285	365		526
Income Tax Expense	466	575		387

Schedule of geographic components of income

year ended December 31 (millions of Canadian dollars)	2012	2011	2010
Canada	842	1,176	811
Foreign	1,096	1,109	969
Income before Income Taxes	1,938	2,285	1,780

Schedule of reconciliation of income tax expense

year ended December 31 (millions of Canadian dollars)	2012		2011		2010
Income before Income Taxes	1,938		2,285		1,780
Federal and provincial statutory tax rate	25.0%		26.5%		28.0%
Expected income tax expense	485		605		498
Income tax differential related to regulated operations	41		42		8
Higher/(lower) effective foreign tax rates	1		(5	)	(36	)
Income from equity investments and non-controlling interests	(40	)	(45	)	(40	)
Other	(21	)	(22	)	(43	)
Actual Income Tax Expense	466		575		387

Schedule of deferred income tax assets and liabilities and amounts classified in the consolidated balance sheet

at December 31 (millions of Canadian dollars)	2012	2011
Deferred Income Tax Assets
Operating loss carryforwards	1,024	900
Financial instruments	88	166
Pension and other post-employment benefits	83	42
Deferred amounts	49	49
Other	92	132
	1,336	1,289
Deferred Income Tax Liabilities
Difference in accounting and tax bases of plant, equipment and PPAs	3,804	3,609
Equity investments	578	457
Taxes on future revenue requirement	283	295
Unrealized foreign exchange gains on long-term debt	159	133
Other	70	87
	4,894	4,581
Net Deferred Income Tax Liabilities	3,558	3,292

The above deferred tax amounts have been classified in the Consolidated Balance Sheet as follows:

at December 31 (millions of Canadian dollars)	2012	2011
Deferred Income Tax Assets
Other current assets (Note 5)	290	248
Intangible and other assets (Note 10)	105	132
	395	380
Deferred Income Tax Liabilities
Accounts payable and other (Note 12)	–	81
Deferred income taxes	3,953	3,591
	3,953	3,672
Net Deferred Income Tax Liabilities	3,558	3,292

Schedule of reconciliation of the annual changes in the total unrecognized tax benefit

at December 31 (millions of Canadian dollars)	2012		2011		2010
Unrecognized tax benefits at beginning of year	52		62		55
Gross increases – tax positions in prior years	2		9		7
Gross decreases – tax positions in prior years	(6	)	(7	)	(1	)
Gross increases – tax positions in current year	9		11		9
Settlements	–		–		(7	)
Lapses of statute of limitations	(8	)	(23	)	(1	)
Unrecognized tax benefits at end of year	49		52		62

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LONG-TERM DEBT (Details)	12 Months Ended							12 Months Ended																	1 Months Ended			1 Months Ended					12 Months Ended								1 Months Ended										12 Months Ended		12 Months Ended																	0 Months Ended																				1 Months Ended										1 Months Ended
	Dec. 31, 2012 CAD	Dec. 31, 2011 CAD	Dec. 31, 2010 CAD	Dec. 31, 2012 Interest rate swap agreements CAD	Dec. 31, 2011 Interest rate swap agreements CAD	Dec. 31, 2012 Interest rate swap agreements USD ($)	Dec. 31, 2011 Interest rate swap agreements USD ($)	Dec. 31, 2012 Short-term debt CAD	Dec. 31, 2011 Short-term debt CAD	Dec. 31, 2010 Short-term debt CAD	Dec. 31, 2012 Total long-term debt (excluding junior subordinated notes) CAD	Dec. 31, 2011 Total long-term debt (excluding junior subordinated notes) CAD	Dec. 31, 2010 Total long-term debt (excluding junior subordinated notes) CAD	Dec. 31, 2012 Junior subordinated notes CAD	Dec. 31, 2011 Junior subordinated notes CAD	Dec. 31, 2010 Junior subordinated notes CAD	Dec. 31, 2012 TRANSCANADA PIPELINES LIMITED Total long-term debt (excluding junior subordinated notes) CAD	Dec. 31, 2011 TRANSCANADA PIPELINES LIMITED Total long-term debt (excluding junior subordinated notes) CAD	Dec. 31, 2012 TRANSCANADA PIPELINES LIMITED Debentures Canadian dollars CAD	Dec. 31, 2011 TRANSCANADA PIPELINES LIMITED Debentures Canadian dollars CAD	Dec. 31, 2012 TRANSCANADA PIPELINES LIMITED Debentures U.S. dollars USD ($)	Dec. 31, 2012 TRANSCANADA PIPELINES LIMITED Debentures U.S. dollars CAD	Dec. 31, 2011 TRANSCANADA PIPELINES LIMITED Debentures U.S. dollars USD ($)	Dec. 31, 2011 TRANSCANADA PIPELINES LIMITED Debentures U.S. dollars CAD	Aug. 31, 2010 TRANSCANADA PIPELINES LIMITED 10.50 % debentures CAD	Dec. 31, 2012 TRANSCANADA PIPELINES LIMITED Medium-Term Notes Canadian dollars CAD	Dec. 31, 2011 TRANSCANADA PIPELINES LIMITED Medium-Term Notes Canadian dollars CAD	Nov. 30, 2011 TRANSCANADA PIPELINES LIMITED 3.65 % medium-term notes, due November 15, 2021 CAD	Nov. 30, 2011 TRANSCANADA PIPELINES LIMITED 4.55 % medium-term notes, due November 15, 2041 CAD	May 31, 2011 TRANSCANADA PIPELINES LIMITED 9.5 % medium term notes CAD	Jan. 31, 2011 TRANSCANADA PIPELINES LIMITED 4.3 % medium term notes CAD	Feb. 28, 2010 TRANSCANADA PIPELINES LIMITED 6.125 % medium term notes U.S. dollars USD ($)	Dec. 31, 2012 TRANSCANADA PIPELINES LIMITED Senior Unsecured Notes Interest rate swap agreements USD ($)	Dec. 31, 2011 TRANSCANADA PIPELINES LIMITED Senior Unsecured Notes Interest rate swap agreements USD ($)	Dec. 31, 2012 TRANSCANADA PIPELINES LIMITED Senior Unsecured Notes U.S. dollars USD ($)	Dec. 31, 2012 TRANSCANADA PIPELINES LIMITED Senior Unsecured Notes U.S. dollars CAD	Dec. 31, 2011 TRANSCANADA PIPELINES LIMITED Senior Unsecured Notes U.S. dollars USD ($)	Dec. 31, 2011 TRANSCANADA PIPELINES LIMITED Senior Unsecured Notes U.S. dollars CAD	Dec. 31, 2012 TRANSCANADA PIPELINES LIMITED Senior Unsecured Notes U.S. dollars Interest rate swap agreements USD ($)	Dec. 31, 2011 TRANSCANADA PIPELINES LIMITED Senior Unsecured Notes U.S. dollars Interest rate swap agreements USD ($)	Aug. 31, 2012 TRANSCANADA PIPELINES LIMITED 2.5 % senior unsecured notes, due August 1, 2022 U.S. dollars USD ($)	May 31, 2012 TRANSCANADA PIPELINES LIMITED 8.625 % senior unsecured notes U.S. dollars USD ($)	Mar. 31, 2012 TRANSCANADA PIPELINES LIMITED 0.875 % senior unsecured notes, due March 2, 2015 U.S. dollars USD ($)	Sep. 30, 2010 TRANSCANADA PIPELINES LIMITED 3.80 % senior unsecured notes, due October 1, 2020 U.S. dollars USD ($)	Jun. 30, 2010 TRANSCANADA PIPELINES LIMITED 3.4 % senior unsecured notes, due June 1, 2015 U.S. dollars USD ($)	Jun. 30, 2010 TRANSCANADA PIPELINES LIMITED 6.1 % senior unsecured notes, due June 1, 2040 U.S. dollars USD ($)	Dec. 31, 2012 TRANSCANADA PIPELINES LIMITED Junior subordinated notes U.S. dollars	Dec. 31, 2011 TRANSCANADA PIPELINES LIMITED Junior subordinated notes U.S. dollars	Dec. 31, 2012 NOVA GAS TRANSMISSION LTD Total long-term debt (excluding junior subordinated notes) CAD	Dec. 31, 2011 NOVA GAS TRANSMISSION LTD Total long-term debt (excluding junior subordinated notes) CAD	Dec. 31, 2012 NOVA GAS TRANSMISSION LTD 8.5 % debentures U.S. dollars USD ($)	Dec. 31, 2012 NOVA GAS TRANSMISSION LTD Debentures with retraction provisions CAD	Dec. 31, 2012 NOVA GAS TRANSMISSION LTD Debentures with retraction provisions Maximum	Dec. 31, 2012 NOVA GAS TRANSMISSION LTD Medium-Term Notes Canadian dollars CAD	Dec. 31, 2011 NOVA GAS TRANSMISSION LTD Medium-Term Notes Canadian dollars CAD	Dec. 31, 2012 NOVA GAS TRANSMISSION LTD Medium-Term Notes U.S. dollars USD ($)	Dec. 31, 2012 NOVA GAS TRANSMISSION LTD Medium-Term Notes U.S. dollars CAD	Dec. 31, 2011 NOVA GAS TRANSMISSION LTD Medium-Term Notes U.S. dollars USD ($)	Dec. 31, 2011 NOVA GAS TRANSMISSION LTD Medium-Term Notes U.S. dollars CAD	Dec. 31, 2012 NOVA GAS TRANSMISSION LTD Debentures and Notes Canadian dollars CAD	Dec. 31, 2011 NOVA GAS TRANSMISSION LTD Debentures and Notes Canadian dollars CAD	Dec. 31, 2012 NOVA GAS TRANSMISSION LTD Debentures and Notes U.S. dollars USD ($)	Dec. 31, 2012 NOVA GAS TRANSMISSION LTD Debentures and Notes U.S. dollars CAD	Dec. 31, 2011 NOVA GAS TRANSMISSION LTD Debentures and Notes U.S. dollars USD ($)	Dec. 31, 2011 NOVA GAS TRANSMISSION LTD Debentures and Notes U.S. dollars CAD	Dec. 31, 2012 TRANSCANADA PIPELINE USA LTD Bank Loan (credit facility) U.S. dollars USD ($)	Dec. 31, 2011 TRANSCANADA PIPELINE USA LTD Bank Loan (credit facility) U.S. dollars USD ($)	Dec. 31, 2011 TRANSCANADA PIPELINE USA LTD Bank Loan (credit facility) U.S. dollars CAD	Jul. 31, 2011 TRANSCANADA PIPELINE USA LTD Bank Loan (credit facility) U.S. dollars USD ($)	Jan. 31, 2012 TRANSCANADA PIPELINE USA LTD Term loan U.S. dollars USD ($)	Aug. 31, 2011 TRANSCANADA PIPELINE USA LTD Term loan U.S. dollars USD ($)	Dec. 31, 2011 TRANSCANADA PIPELINE USA LTD Term loan U.S. dollars USD ($)	Dec. 31, 2012 TRANSCANADA PIPELINE USA LTD Revolving facility U.S. dollars USD ($)	Dec. 31, 2012 ANR PIPELINE COMPANY Senior Unsecured Notes U.S. dollars USD ($)	Dec. 31, 2012 ANR PIPELINE COMPANY Senior Unsecured Notes U.S. dollars CAD	Dec. 31, 2011 ANR PIPELINE COMPANY Senior Unsecured Notes U.S. dollars USD ($)	Dec. 31, 2011 ANR PIPELINE COMPANY Senior Unsecured Notes U.S. dollars CAD	Dec. 31, 2012 GAS TRANSMISSION NORTHWEST CORPORATION Senior Unsecured Notes U.S. dollars USD ($)	Dec. 31, 2012 GAS TRANSMISSION NORTHWEST CORPORATION Senior Unsecured Notes U.S. dollars CAD	Dec. 31, 2011 GAS TRANSMISSION NORTHWEST CORPORATION Senior Unsecured Notes U.S. dollars USD ($)	Dec. 31, 2011 GAS TRANSMISSION NORTHWEST CORPORATION Senior Unsecured Notes U.S. dollars CAD	May 31, 2011 TC PIPELINES, LP U.S. dollars GTN LLC	May 31, 2011 TC PIPELINES, LP U.S. dollars Bison LLC	Dec. 31, 2012 TC PIPELINES, LP Total long-term debt (excluding junior subordinated notes) CAD	Dec. 31, 2011 TC PIPELINES, LP Total long-term debt (excluding junior subordinated notes) CAD	Dec. 31, 2012 TC PIPELINES, LP Senior Unsecured Notes U.S. dollars USD ($)	Dec. 31, 2012 TC PIPELINES, LP Senior Unsecured Notes U.S. dollars CAD	Dec. 31, 2011 TC PIPELINES, LP Senior Unsecured Notes U.S. dollars USD ($)	Dec. 31, 2011 TC PIPELINES, LP Senior Unsecured Notes U.S. dollars CAD	Jun. 30, 2011 TC PIPELINES, LP 4.65 % senior unsecured notes, due 2021 U.S. dollars USD ($)	Dec. 31, 2011 TC PIPELINES, LP Term loan U.S. dollars USD ($)	May 31, 2011 TC PIPELINES, LP Revolving facility U.S. dollars USD ($)	Dec. 31, 2012 TC PIPELINES, LP Revolving facility U.S. dollars USD ($)	Dec. 31, 2011 TC PIPELINES, LP Revolving facility U.S. dollars USD ($)	Jul. 31, 2011 TC PIPELINES, LP Revolving facility U.S. dollars USD ($)	Dec. 31, 2012 TC PIPELINES, LP Unsecured Loan U.S. dollars USD ($)	Dec. 31, 2012 TC PIPELINES, LP Unsecured Loan U.S. dollars CAD	Dec. 31, 2011 TC PIPELINES, LP Unsecured Loan U.S. dollars USD ($)	Dec. 31, 2011 TC PIPELINES, LP Unsecured Loan U.S. dollars CAD	May 31, 2011 TC PIPELINES, LP Bridge loan facility U.S. dollars USD ($)	Dec. 31, 2012 GREAT LAKES GAS TRANSMISSION LIMITED PARTNERSHIP Senior Unsecured Notes U.S. dollars USD ($)	Dec. 31, 2012 GREAT LAKES GAS TRANSMISSION LIMITED PARTNERSHIP Senior Unsecured Notes U.S. dollars CAD	Dec. 31, 2011 GREAT LAKES GAS TRANSMISSION LIMITED PARTNERSHIP Senior Unsecured Notes U.S. dollars USD ($)	Dec. 31, 2011 GREAT LAKES GAS TRANSMISSION LIMITED PARTNERSHIP Senior Unsecured Notes U.S. dollars CAD	Dec. 31, 2012 TUSCARORA GAS TRANSMISSION COMPANY Senior Secured Notes U.S. dollars USD ($)	Dec. 31, 2012 TUSCARORA GAS TRANSMISSION COMPANY Senior Secured Notes U.S. dollars CAD	Dec. 31, 2011 TUSCARORA GAS TRANSMISSION COMPANY Senior Secured Notes U.S. dollars USD ($)	Dec. 31, 2011 TUSCARORA GAS TRANSMISSION COMPANY Senior Secured Notes U.S. dollars CAD	Dec. 31, 2012 PORTLAND NATURAL GAS TRANSMISSION SYSTEM Senior Secured Notes U.S. dollars USD ($)	Dec. 31, 2012 PORTLAND NATURAL GAS TRANSMISSION SYSTEM Senior Secured Notes U.S. dollars CAD	Dec. 31, 2011 PORTLAND NATURAL GAS TRANSMISSION SYSTEM Senior Secured Notes U.S. dollars USD ($)	Dec. 31, 2011 PORTLAND NATURAL GAS TRANSMISSION SYSTEM Senior Secured Notes U.S. dollars CAD
Long-term debt
Long-term debt	18,913,000,000	18,659,000,000															15,878,000,000	14,792,000,000	874,000,000	874,000,000	$ 400,000,000	398,000,000	$ 600,000,000	610,000,000		4,549,000,000	4,549,000,000								$ 10,126,000,000	10,057,000,000	$ 8,626,000,000	8,759,000,000											1,117,000,000	1,305,000,000				504,000,000	504,000,000	$ 33,000,000	32,000,000	$ 33,000,000	33,000,000	382,000,000	387,000,000	$ 200,000,000	199,000,000	$ 375,000,000	381,000,000		$ 500,000,000	509,000,000						$ 432,000,000	430,000,000	$ 432,000,000	438,000,000	$ 325,000,000	323,000,000	$ 325,000,000	331,000,000			658,000,000	725,000,000	$ 350,000,000	348,000,000	$ 350,000,000	356,000,000							$ 312,000,000	310,000,000	$ 363,000,000	369,000,000		$ 354,000,000	352,000,000	$ 373,000,000	379,000,000	$ 27,000,000	27,000,000	$ 30,000,000	31,000,000	$ 129,000,000	128,000,000	$ 147,000,000	149,000,000
Less: Current Portion of Long-Term Debt	894,000,000	935,000,000
Non-current portion of long-term debt	18,019,000,000	17,724,000,000
Effective interest rates (as a percent)																			10.90%	10.90%	9.90%	9.90%	9.50%	9.50%		5.90%	5.90%								5.60%	5.60%	6.20%	6.20%									6.50%	6.50%						7.40%	7.40%	7.50%	7.50%	7.50%	7.50%	11.50%	11.50%	7.90%	7.90%	8.20%	8.20%		0.60%	0.60%						8.90%	8.90%	8.90%	8.90%	5.50%	5.50%	5.50%	5.50%					4.70%	4.70%	4.70%	4.70%							1.50%	1.50%	1.60%	1.60%		7.80%	7.80%	7.80%	7.80%	4.00%	4.00%	4.40%	4.40%	6.10%	6.10%	6.10%	6.10%
Fair value adjustments				(10,000,000)	(13,000,000)																												10,000,000	13,000,000
Amount of debt in fair value hedge						350,000,000	350,000,000																																350,000,000	350,000,000
Principal repayments on long-term debt for the next five years
2013	894,000,000
2014	970,000,000
2015	1,561,000,000
2016	1,214,000,000
2017	555,000,000
Long-term debt
Debt issued																												500,000,000	250,000,000												1,000,000,000		500,000,000	1,000,000,000	500,000,000	750,000,000																																												350,000,000
Interest rate (as a percent)																									10.50%			3.65%	4.55%	9.50%	4.30%	6.125%									2.50%	8.625%	0.875%	3.80%	3.40%	6.10%	6.35%				8.50%																																							4.65%
Debt repaid/retired																									130,000,000					60,000,000	300,000,000	120,000,000										200,000,000									175,000,000																			500,000,000	200,000,000																				300,000,000
Face amount																																																				225,000,000
Percentage of principal plus accrued and unpaid interest redeemable at specified repayment dates																																																					8.00%
Initial maximum borrowing capacity																																																																					1,000,000,000
Borrowing capacity																																																																		300,000,000							300,000,000																						500,000,000
Amount outstanding																																																																								500,000,000																					312,000,000	363,000,000
Draws from credit facility																																																																																												125,000,000								61,000,000
Ownership interest (as a percent)																																																																																		25.00%	25.00%
Interest Expense
Interest expense								16,000,000	16,000,000	15,000,000	1,190,000,000	1,154,000,000	1,149,000,000	63,000,000	63,000,000	65,000,000
Capitalized interest	(300,000,000)	(302,000,000)	(587,000,000)
Amortization and other financial charges	7,000,000	6,000,000	59,000,000
Total	976,000,000	937,000,000	701,000,000
Interest payments
Interest payments on long-term debt and junior subordinated notes, net of interest capitalized on construction projects	966,000,000	926,000,000	652,000,000

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CHANGES IN OPERATING WORKING CAPITAL (Tables)

12 Months Ended

Dec. 31, 2012

CHANGES IN OPERATING WORKING CAPITAL

Schedule of changes in operating working capital

year ended December 31 (millions of Canadian dollars)	2012	2011		2010
Decrease/(increase) in accounts receivable	67	(15	)	(286	)
Decrease in inventories	27	3		25
Decrease/(increase) in other current assets	66	(27	)	(76	)
Increase in accounts payable and other	127	266		60
Increase/(decrease) in accrued interest	–	8		(8	)
Decrease/(Increase) in Operating Working Capital	287	235		(285	)

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COMMON SHARES (Details 3) (CAD) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Options Outstanding
Number of Options (in shares)	7,434,000
Weighted Average Exercise Price (in Canadian dollars per share)	37.69
Weighted Average Remaining Contractual Life	3 years 10 months 24 days
Options Exercisable
Number of Options (in shares)	4,588,000
Weighted Average Exercise Price (in Canadian dollars per share)	35.93
Weighted Average Remaining Contractual Life	2 years 8 months 12 days
Additional disclosure
Common shares reserved for future issuance under stock option plan	2,400,000
Weighted average fair value of options granted (in Canadian dollars per share)	5.08	2.94	5.76
Contractual life of options granted	7 years
Award vesting right percentage	33.30%
Award vesting period	3 years
Weighted average assumptions used in binomial model for determining the fair value of awards granted
Expected life	5 years 10 months 24 days	4 years	4 years
Interest rate (as a percent)	1.60%	2.10%	2.00%
Volatility (as a percent)	19.00%	14.00%	27.00%
Dividend yield (as a percent)	4.20%	4.30%	4.70%
Forfeiture rate (as a percent)	15.00%	15.00%	15.00%
Amount expensed for stock awards, with a corresponding increase in additional paid-in capital	5	5	4
Total intrinsic value of options exercised	18	34	17
Aggregate intrinsic value of total options exercisable	51
Total intrinsic value of options outstanding	69
Number of shares vested	1,000,000	900,000	1,500,000
Fair value of shares vested	49	42	57
Range of exercise price per share $30.10 to $31.97
Stock options outstanding and exercisable by exercise price range
Exercise price, low end of range (in Canadian dollars per share)	30.10
Exercise price, high end of range (in Canadian dollars per share)	31.97
Options Outstanding
Number of Options (in shares)	1,093,000
Weighted Average Exercise Price (in Canadian dollars per share)	31.95
Weighted Average Remaining Contractual Life	3 years 2 months 12 days
Options Exercisable
Number of Options (in shares)	1,093,000
Weighted Average Exercise Price (in Canadian dollars per share)	31.95
Weighted Average Remaining Contractual Life	3 years 2 months 12 days
Range of exercise price per share $32.40 to $35.08
Stock options outstanding and exercisable by exercise price range
Exercise price, low end of range (in Canadian dollars per share)	32.40
Exercise price, high end of range (in Canadian dollars per share)	35.08
Options Outstanding
Number of Options (in shares)	1,387,000
Weighted Average Exercise Price (in Canadian dollars per share)	34.64
Weighted Average Remaining Contractual Life	4 years
Options Exercisable
Number of Options (in shares)	1,160,000
Weighted Average Exercise Price (in Canadian dollars per share)	34.55
Weighted Average Remaining Contractual Life	4 years
Range of exercise price per share $35.23 to $37.93
Stock options outstanding and exercisable by exercise price range
Exercise price, low end of range (in Canadian dollars per share)	35.23
Exercise price, high end of range (in Canadian dollars per share)	37.93
Options Outstanding
Number of Options (in shares)	1,202,000
Weighted Average Exercise Price (in Canadian dollars per share)	37.52
Weighted Average Remaining Contractual Life	5 years
Options Exercisable
Number of Options (in shares)	556,000
Weighted Average Exercise Price (in Canadian dollars per share)	37.22
Weighted Average Remaining Contractual Life	4 years 10 months 24 days
Range of exercise price per share $38.10 to $39.75
Stock options outstanding and exercisable by exercise price range
Exercise price, low end of range (in Canadian dollars per share)	38.10
Exercise price, high end of range (in Canadian dollars per share)	39.75
Options Outstanding
Number of Options (in shares)	1,750,000
Weighted Average Exercise Price (in Canadian dollars per share)	38.83
Weighted Average Remaining Contractual Life	1 year 8 months 12 days
Options Exercisable
Number of Options (in shares)	1,750,000
Weighted Average Exercise Price (in Canadian dollars per share)	38.83
Weighted Average Remaining Contractual Life	1 year 8 months 12 days
Range of exercise price per share $41.65 to $45.29
Stock options outstanding and exercisable by exercise price range
Exercise price, low end of range (in Canadian dollars per share)	41.65
Exercise price, high end of range (in Canadian dollars per share)	45.29
Options Outstanding
Number of Options (in shares)	2,002,000
Weighted Average Exercise Price (in Canadian dollars per share)	42.03
Weighted Average Remaining Contractual Life	6 years 1 month 6 days
Options Exercisable
Number of Options (in shares)	29,000
Weighted Average Exercise Price (in Canadian dollars per share)	41.87
Weighted Average Remaining Contractual Life	5 years 10 months 24 days

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OTHER LONG-TERM LIABILITIES (Tables)

12 Months Ended

Dec. 31, 2012

OTHER LONG-TERM LIABILITIES

Schedule of deferred amounts

at December 31 (millions of Canadian dollars)	2012	2011
Employee post-retirement benefit (Note 20)	482	321
Fair value of derivative contracts (Note 21)	186	349
Guarantees (Note 24)	17	118
Asset retirement obligations	72	65
Other	125	76
	882	929

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ACQUISITIONS AND DISPOSITIONS

12 Months Ended

Dec. 31, 2012

ACQUISITIONS AND DISPOSITIONS

ACQUISITIONS AND DISPOSITIONS

23.  ACQUISITIONS AND DISPOSITIONS

Energy

CrossAlta
On December 18, 2012, TransCanada purchased BP's 40 per cent interest in the assets of the Crossfield Gas Storage facility and BP's interest in CrossAlta Gas Storage & Services Ltd. (collectively CrossAlta) for $214 million in cash, net of cash acquired, resulting in the Company owning and operating 100 per cent of these operations. The acquisition will enhance TransCanada's ability to deliver reliable services to the natural gas markets in western Canada and is consistent with TransCanada's growth strategy for its natural gas storage business.

The Company measured the assets and liabilities acquired at fair value and the transaction resulted in no goodwill. Pro-forma revenues and earnings for the years ended December 31, 2012 and 2011, assuming the acquisition had occurred at the beginning of the period, would not be materially different from reported results.

Upon acquisition, TransCanada began consolidating CrossAlta. Prior to the acquisition, TransCanada applied equity accounting to its 60 per cent ownership interest in CrossAlta.

Natural Gas Pipelines

TC PipeLines, LP
On May 3, 2011, TransCanada completed the sale of a 25 per cent interest in each of GTN LLC and Bison LLC to TC PipeLines, LP for an aggregate purchase price of US$605 million which included US$81 million of long-term debt, or 25 per cent of GTN LLC's outstanding debt. GTN LLC and Bison LLC own the GTN and Bison natural gas pipelines, respectively.

On May 3, 2011, TC PipeLines, LP completed an underwritten public offering of 7,245,000 common units, including 945,000 common units purchased by the underwriters upon full exercise of an over-allotment option, at US$47.58 per unit. Net proceeds of approximately US$331 million from this offering were used to partially fund the acquisition. The acquisition was also funded by draws of US$61 million on TC PipeLines, LP's bridge loan facility and US$125 million on its US$250 million senior revolving credit facility.

As part of this offering, TransCanada made a capital contribution of approximately US$7 million to maintain its two per cent general partnership interest in TC PipeLines, LP and did not purchase any other units. As a result of the common units offering, TransCanada's ownership in TC PipeLines, LP decreased from 38.2 per cent to 33.3 per cent and an after-tax dilution gain of $30 million ($50 million pre-tax) was recorded in Additional Paid-In Capital.

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COMMON SHARES (Details 4) (CAD) In Millions, except Share data, unless otherwise specified	0 Months Ended	1 Months Ended	12 Months Ended
	Apr. 28, 2011	Feb. 28, 2011	Dec. 31, 2012 item	Dec. 31, 2011	Dec. 31, 2010
Shareholder Rights Plan
Number of rights entitled to each common share			1
Number of common shares entitled to be purchased under each right			2
Cash Dividends
Cash dividends paid			1,226	961	710
Cash dividends paid (in Canadian dollars per share)			1.74	1.66	1.58
Dividend Reinvestment Plan
Period before dividend payment during which common shares from Treasury were issued at a discount in lieu of cash dividends	5 days
Discount on issuance of common shares from the average market price (as a percent)		2.00%			3.00%
Common stock issued in accordance with the DRP (in shares)				5,400,000	10,700,000
Value of common shares issued in accordance with the DRP in lieu of making cash dividend payments				202	378

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INCOME TAXES (Details 3) (CAD) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Reconciliation of the annual changes in the total unrecognized tax benefit
Unrecognized tax benefits at beginning of year	52	62	55
Gross increases - tax positions in prior years	2	9	7
Gross decreases - tax positions in prior years	(6)	(7)	(1)
Gross increases - tax positions in current year	9	11	9
Settlements			(7)
Lapses of statute of limitations	(8)	(23)	(1)
Unrecognized tax benefits at end of year	49	52	62
Income tax interest and penalties
Interest expense (reversal) reflected within net tax expense	(2)	(12)	3
Accrued interest expense	5	7
Expected enactment of Canadian federal tax legislation
SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleLineItems
Expected favorable income tax adjustment	25

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RISK MANAGEMENT AND FINANCIAL INSTRUMENTS (Details 4)			12 Months Ended
	Dec. 31, 2012 CAD	Dec. 31, 2011 CAD	Dec. 31, 2012 Interest rate swap agreements CAD	Dec. 31, 2011 Interest rate swap agreements CAD	Dec. 31, 2012 Interest rate swap agreements USD ($)	Dec. 31, 2011 Interest rate swap agreements USD ($)	Dec. 31, 2012 Carrying Amount Non-derivative financial assets CAD	Dec. 31, 2011 Carrying Amount Non-derivative financial assets CAD	Dec. 31, 2012 Carrying Amount Non-derivative financial liabilities CAD	Dec. 31, 2011 Carrying Amount Non-derivative financial liabilities CAD	Dec. 31, 2012 Fair Value Non-derivative financial assets CAD	Dec. 31, 2011 Fair Value Non-derivative financial assets CAD	Dec. 31, 2012 Fair Value Non-derivative financial liabilities CAD	Dec. 31, 2011 Fair Value Non-derivative financial liabilities CAD	Dec. 31, 2012 Fair Value, Level II Non-derivative financial assets CAD	Dec. 31, 2011 Fair Value, Level II Non-derivative financial assets CAD	Dec. 31, 2012 Fair Value, Level II Non-derivative financial liabilities CAD	Dec. 31, 2011 Fair Value, Level II Non-derivative financial liabilities CAD	Dec. 31, 2012 Recurring Fair Value, Level II Non-derivative financial liabilities CAD	Dec. 31, 2011 Recurring Fair Value, Level II Non-derivative financial liabilities CAD
Financial Assets
Cash and cash equivalents							551,000,000	654,000,000			551,000,000	654,000,000
Accounts receivable and other							1,288,000,000	1,359,000,000							1,337,000,000	1,403,000,000
Available for sale assets							44,000,000	23,000,000			44,000,000	23,000,000
Total assets							1,883,000,000	2,036,000,000			1,932,000,000	2,080,000,000
Accounts Receivable							1,100,000,000	1,100,000,000
Other Current Assets	997,000,000	1,114,000,000					40,000,000	41,000,000
Intangible and Other Assets							240,000,000	247,000,000
Financial Liabilities
Notes payable	2,275,000,000	1,863,000,000							2,275,000,000	1,863,000,000			2,275,000,000	1,863,000,000
Accounts payable and other long-term liabilities									1,535,000,000	1,329,000,000			1,535,000,000	1,329,000,000
Accrued interest									368,000,000	365,000,000			368,000,000	365,000,000
Long-term debt									18,913,000,000	18,659,000,000							24,573,000,000	23,757,000,000	350,000,000	350,000,000
Junior subordinated notes	994,000,000	1,016,000,000							994,000,000	1,016,000,000							1,054,000,000	1,027,000,000
Total liabilities									24,085,000,000	23,232,000,000			29,805,000,000	28,341,000,000
Fair value adjustments (losses)			10,000,000	13,000,000
Long-Term Debt hedged					350,000,000	350,000,000
Accounts Payable									1,500,000,000	1,200,000,000
Other Long-Term Liabilities	882,000,000	929,000,000							38,000,000	137,000,000

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DESCRIPTION OF TRANSCANADA'S BUSINESS (Details)	12 Months Ended	0 Months Ended	12 Months Ended									12 Months Ended							12 Months Ended		12 Months Ended		12 Months Ended			12 Months Ended						12 Months Ended
	Dec. 31, 2012 item	Dec. 15, 2011 Ontario solar projects MW item	Dec. 31, 2012 Sundance A MW	Dec. 31, 2012 Sundance B MW	Dec. 31, 2012 Sheerness MW	Dec. 31, 2012 TC PipeLines, LP	Dec. 31, 2011 TC PipeLines, LP	May 03, 2011 TC PipeLines, LP	Dec. 31, 2010 TC PipeLines, LP	Dec. 31, 2012 ASTC Power Partnership	Dec. 31, 2012 Natural Gas Pipelines TC PipeLines, LP	Dec. 31, 2012 Natural Gas Pipelines Ontario Power Authority MW	Dec. 31, 2012 Natural Gas Pipelines TQM	Dec. 31, 2012 Natural Gas Pipelines Northern Border	Dec. 31, 2011 Natural Gas Pipelines Northern Border	Dec. 31, 2010 Natural Gas Pipelines Northern Border	Dec. 31, 2012 Natural Gas Pipelines Northern Border TC PipeLines, LP	Dec. 31, 2012 Natural Gas Pipelines Iroquois	Dec. 31, 2012 Natural Gas Pipelines Great Lakes	Dec. 31, 2012 Natural Gas Pipelines Great Lakes TC PipeLines, LP	Dec. 31, 2012 Natural Gas Pipelines GTN	Dec. 31, 2012 Natural Gas Pipelines GTN TC PipeLines, LP	Dec. 31, 2012 Natural Gas Pipelines Bison	Dec. 31, 2012 Natural Gas Pipelines Bison TC PipeLines, LP	Dec. 31, 2012 Natural Gas Pipelines Portland	Dec. 31, 2012 Natural Gas Pipelines North Baja	Dec. 31, 2012 Natural Gas Pipelines North Baja TC PipeLines, LP	Dec. 31, 2012 Natural Gas Pipelines Tuscarora	Dec. 31, 2012 Natural Gas Pipelines Tuscarora TC PipeLines, LP	Dec. 31, 2012 Natural Gas Pipelines TransGas	Dec. 31, 2012 Natural Gas Pipelines Gas Pacifico and INNERGY	Dec. 31, 2012 Oil Pipelines mi	Dec. 31, 2012 Oil Pipelines km	Dec. 31, 2012 Oil Pipelines Phoenix Energy Holdings Limited km	Dec. 31, 2012 Oil Pipelines Phoenix Energy Holdings Limited mi	Dec. 31, 2012 Energy Sundance A MW	Dec. 31, 2012 Energy Sundance B MW	Dec. 31, 2012 Energy Sheerness MW	Dec. 31, 2012 Energy Bruce A	Dec. 31, 2012 Energy Bruce B	Dec. 31, 2012 Energy Portlands Energy	Dec. 31, 2012 Energy ASTC Power Partnership	Dec. 31, 2012 Energy Cartier Wind
DESCRIPTION OF TRANSCANADA'S BUSINESS
Number of business segments in which the entity operates	3
Description of business
Direct ownership interest (as a percent)						33.30%	33.30%	38.20%	38.20%		33.30%								53.60%		75.00%		75.00%		61.70%					46.50%	30.00%												62.00%
Ownership interest (as a percent)										50.00%			50.00%	16.70%	16.70%	19.10%	50.00%	44.50%		46.40%		25.00%		25.00%															48.90%	31.60%	50.00%	50.00%
Combined effective ownership interest (as a percent)																			69.00%		83.30%		83.30%			33.30%		33.30%
Ownership interest (as a percent)																											100.00%		100.00%
Length of pipeline system																																54	90	500	300
Length of new pipeline under regulatory approval																																1,179	1,897
Interest purchased (as a percent)																																				100.00%		100.00%
Power generating capacities of facilities purchased under PPA (in Megawatts)			560	353	756																															560	706	756
Capacity of plant under a contract to develop, own and operate (in Megawatts)												900
Number of Ontario solar projects that the entity has agreed to purchase		9
Combined capacity of Ontario solar project (in Megawatts)		86

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COMMON SHARES (Details) (CAD) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Changes in common shares during the period
Outstanding at the beginning of the period (in shares)	704,000,000
Outstanding at the beginning of the period	12,011
Dividend reinvestment and share purchase plan (in shares)		5,400,000	10,700,000
Dividend reinvestment and share purchase plan		202	378
Exercise of options (in shares)	1,600,000	2,260,000	1,201,000
Outstanding at the end of the period (in shares)	705,000,000	704,000,000
Outstanding at the end of the period	12,069	12,011
Net Income per Share
Weighted average number of common shares outstanding used to calculate basic earnings per share	705,000,000	702,000,000	691,000,000
Weighted average number of common shares outstanding used to calculate diluted earnings per share	706,000,000	703,000,000	692,000,000
Common Shares
Changes in common shares during the period
Outstanding at the beginning of the period (in shares)	703,861,000	696,230,000	684,359,000
Outstanding at the beginning of the period	12,011	11,745	11,338
Dividend reinvestment and share purchase plan (in shares)		5,371,000	10,670,000
Dividend reinvestment and share purchase plan		202	378
Exercise of options (in shares)	1,600,000	2,260,000	1,201,000
Exercise of options	58	64	29
Outstanding at the end of the period (in shares)	705,461,000	703,861,000	696,230,000
Outstanding at the end of the period	12,069	12,011	11,745
Net Income per Share
Weighted average number of common shares outstanding used to calculate basic earnings per share	704,600,000	701,600,000	690,500,000
Weighted average number of common shares outstanding used to calculate diluted earnings per share	705,700,000	702,800,000	691,700,000

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RISK MANAGEMENT AND FINANCIAL INSTRUMENTS (Details) (Designated as a net investment hedge, US$ denominated) In Billions, unless otherwise specified	Dec. 31, 2012 USD ($)	Dec. 31, 2012 CAD	Dec. 31, 2011 USD ($)	Dec. 31, 2011 CAD
Risk management and financial instruments
Debt carrying value	$ 11.2	11.1	$ 9.8	10.0
Debt fair value	$ 14.4	14.3	$ 12.5	12.7

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EMPLOYEE POST-RETIREMENT BENEFITS (Details) (CAD) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Employee post-retirement benefits
Expected average remaining life expectancy of former employees over which past service costs are amortized	12 years	12 years	12 years
Amount expensed for the Savings Plan and DC Plans	24	23	21
Total cash payments for employee post-retirement benefits, consisting of cash contributed by the company to the DB Plans and other benefit plans	114	93	127
Change in Plan Assets
Plan assets at fair value - beginning of year	1,685
Plan assets at fair value - end of year	1,857	1,685
Amounts recognized in the Balance Sheet
Intangible and Other Assets	11
Other Long-Term Liabilities	(482)	(321)
Pension Benefit Plans
Employee post-retirement benefits
Consecutive period of employment for highest average earnings	3 years
Expected average remaining service life of employees over which past service costs are amortized	9 years	8 years	8 years
Change in Benefit Obligation
Benefit obligation - beginning of year	1,836	1,622
Service cost	66	54	50
Interest cost	94	91	89
Employee contributions	4	4
Benefits paid	(79)	(71)
Actuarial loss	227	131
Foreign exchange rate changes	(6)	5
Benefit obligation - end of year	2,142	1,836	1,622
Change in Plan Assets
Plan assets at fair value - beginning of year	1,656	1,636
Actual return on plan assets	165	21
Employer contributions	83	62
Employee contributions	4	4
Benefits paid	(79)	(71)
Foreign exchange rate changes	(4)	4
Plan assets at fair value - end of year	1,825	1,656	1,636
Funded Status - Plan (Deficit)	(317)	(180)
Amounts recognized in the Balance Sheet
Other Long-Term Liabilities	(317)	(180)
Total	(317)	(180)
Pension Benefit Plans | Canadian
Employee post-retirement benefits
Letter of credit to the DB Plan	48	27
Total amount outstanding under letters of credit	75
Other Post-Retirement Benefit Plans
Change in Benefit Obligation
Benefit obligation - beginning of year	170	159
Service cost	2	2	2
Interest cost	8	9	9
Employee contributions	1	1
Benefits paid	(9)	(9)
Actuarial loss	16	7
Foreign exchange rate changes	(2)	1
Benefit obligation - end of year	186	170	159
Change in Plan Assets
Plan assets at fair value - beginning of year	29	29
Actual return on plan assets	4
Employer contributions	7	8
Employee contributions	1	1
Benefits paid	(9)	(9)
Plan assets at fair value - end of year	32	29	29
Funded Status - Plan (Deficit)	(154)	(141)
Amounts recognized in the Balance Sheet
Intangible and Other Assets	11
Other Long-Term Liabilities	(165)	(141)
Total	(154)	(141)

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RISK MANAGEMENT AND FINANCIAL INSTRUMENTS (Details 2) (Designated as a net investment hedge) In Millions, unless otherwise specified													12 Months Ended
	Dec. 31, 2012 Cross-currency swaps and forward foreign exchange contracts Other current assets CAD	Dec. 31, 2011 Cross-currency swaps and forward foreign exchange contracts Other current assets CAD	Dec. 31, 2012 Cross-currency swaps and forward foreign exchange contracts Intangible and Other assets CAD	Dec. 31, 2011 Cross-currency swaps and forward foreign exchange contracts Intangible and Other assets CAD	Dec. 31, 2012 Cross-currency swaps and forward foreign exchange contracts Accounts payable and Other CAD	Dec. 31, 2011 Cross-currency swaps and forward foreign exchange contracts Accounts payable and Other CAD	Dec. 31, 2012 Cross-currency swaps and forward foreign exchange contracts Other Long-Term Liabilities CAD	Dec. 31, 2011 Cross-currency swaps and forward foreign exchange contracts Other Long-Term Liabilities CAD	Dec. 31, 2012 Cross-currency swaps and forward foreign exchange contracts US$ denominated USD ($)	Dec. 31, 2012 Cross-currency swaps and forward foreign exchange contracts US$ denominated CAD	Dec. 31, 2011 Cross-currency swaps and forward foreign exchange contracts US$ denominated USD ($)	Dec. 31, 2011 Cross-currency swaps and forward foreign exchange contracts US$ denominated CAD	Dec. 31, 2012 Cross-currency swaps US$ denominated CAD	Dec. 31, 2011 Cross-currency swaps US$ denominated CAD	Dec. 31, 2012 Cross-currency swaps US$ denominated USD ($)	Dec. 31, 2011 Cross-currency swaps US$ denominated USD ($)	Dec. 31, 2012 Forward foreign exchange contracts US$ denominated USD ($)	Dec. 31, 2011 Forward foreign exchange contracts US$ denominated USD ($)	Dec. 31, 2011 Forward foreign exchange contracts US$ denominated CAD
Risk management and financial instruments
Fair Value - Assets	71	79	47	66									82	93
Fair Value - Liabilities					(6)	(15)	(30)	(41)											(4)
Fair value										82		89
Notional or Principal Amount									4,050		4,575				3,800	3,850	250	725
Net realized gains related to the interest component													30	27

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COMMON SHARES (Details 2) (CAD) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Number of Options
Outstanding at the beginning of the period (in shares)	7,100	8,406	8,274
Granted (in shares)	1,978	970	1,367
Exercised (in shares)	(1,600)	(2,260)	(1,201)
Forfeited (in shares)	(44)	(16)	(34)
Outstanding at the end of the period (in shares)	7,434	7,100	8,406
Weighted Average Exercise Prices
Outstanding at the beginning of the period (in Canadian dollars per share)	35.44	32.57	30.56
Granted (in Canadian dollars per share)	42.03	38.02	35.32
Exercised (in Canadian dollars per share)	33.13	25.86	22.04
Forfeited (in Canadian dollars per share)	36.55	35.83	27.35
Outstanding at the end of the period (in Canadian dollars per share)	37.69	35.44	32.57
Options Exercisable
Options Exercisable (in shares)	4,588	5,165	6,458	6,212

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INCOME TAXES (Details) (CAD) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Current
Canada	167	212	31
Foreign	14	(2)	(170)
Total	181	210	(139)
Deferred
Canada	69	139	175
Foreign	216	226	351
Total	285	365	526
Total Income Tax Expense/ (Recovery)	466	575	387
Geographic Components of Income
Canada	842	1,176	811
Foreign	1,096	1,109	969
Income before Income Taxes	1,938	2,285	1,780
Reconciliation of Income Tax Expense
Income before Income Taxes	1,938	2,285	1,780
Federal and provincial statutory tax rate (as a percent)	25.00%	26.50%	28.00%
Expected income tax expense	485	605	498
Income tax differential related to regulated operations	41	42	8
Higher / (lower) effective foreign tax rates	1	(5)	(36)
Income from equity investments and non-controlling interests	(40)	(45)	(40)
Other	(21)	(22)	(43)
Total Income Tax Expense/ (Recovery)	466	575	387
Deferred Income Tax Assets
Operating loss carryforwards	1,024	900
Financial instruments	88	166
Pension and other post-employment benefits	83	42
Deferred amounts	49	49
Other	92	132
Total	1,336	1,289
Deferred Income Tax Liabilities
Difference in accounting and tax bases of plant, equipment and PPAs	3,804	3,609
Equity investments	578	457
Taxes on future revenue requirement	283	295
Unrealized foreign exchange gains on long-term debt	159	133
Other	70	87
Total	4,894	4,581
Net deferred income tax liabilities	3,558	3,292
Deferred Income Tax Assets
Other current assets	290	248
Intangible and other assets	105	132
Total	395	380
Deferred Income Tax Liabilities
Accounts payable and other		81
Deferred income taxes	3,953	3,591
Total	3,953	3,672
Net Deferred Income Tax Liabilities
Net deferred income tax liabilities	3,558	3,292

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INCOME TAXES

12 Months Ended

Dec. 31, 2012

INCOME TAXES

INCOME TAXES

15.  INCOME TAXES

Provision for Income Taxes

year ended December 31 (millions of Canadian dollars)	2012	2011		2010
Current
Canada	167	212		31
Foreign	14	(2	)	(170	)
	181	210		(139	)
Deferred
Canada	69	139		175
Foreign	216	226		351
	285	365		526
Income Tax Expense	466	575		387

Geographic Components of Income

year ended December 31 (millions of Canadian dollars)	2012	2011	2010
Canada	842	1,176	811
Foreign	1,096	1,109	969
Income before Income Taxes	1,938	2,285	1,780

Reconciliation of Income Tax Expense

year ended December 31 (millions of Canadian dollars)	2012		2011		2010
Income before Income Taxes	1,938		2,285		1,780
Federal and provincial statutory tax rate	25.0%		26.5%		28.0%
Expected income tax expense	485		605		498
Income tax differential related to regulated operations	41		42		8
Higher/(lower) effective foreign tax rates	1		(5	)	(36	)
Income from equity investments and non-controlling interests	(40	)	(45	)	(40	)
Other	(21	)	(22	)	(43	)
Actual Income Tax Expense	466		575		387

Deferred Income Tax Assets and Liabilities

at December 31 (millions of Canadian dollars)	2012	2011
Deferred Income Tax Assets
Operating loss carryforwards	1,024	900
Financial instruments	88	166
Pension and other post-employment benefits	83	42
Deferred amounts	49	49
Other	92	132
	1,336	1,289
Deferred Income Tax Liabilities
Difference in accounting and tax bases of plant, equipment and PPAs	3,804	3,609
Equity investments	578	457
Taxes on future revenue requirement	283	295
Unrealized foreign exchange gains on long-term debt	159	133
Other	70	87
	4,894	4,581
Net Deferred Income Tax Liabilities	3,558	3,292

The above deferred tax amounts have been classified in the Consolidated Balance Sheet as follows:

at December 31 (millions of Canadian dollars)	2012	2011
Deferred Income Tax Assets
Other current assets (Note 5)	290	248
Intangible and other assets (Note 10)	105	132
	395	380
Deferred Income Tax Liabilities
Accounts payable and other (Note 12)	–	81
Deferred income taxes	3,953	3,591
	3,953	3,672
Net Deferred Income Tax Liabilities	3,558	3,292

At December 31, 2012, the Company has recognized the benefit of unused non-capital loss carryforwards of $865 million (2011 – $450 million) for federal and provincial purposes in Canada, which expire from 2014 to 2032.

At December 31, 2012, the Company has recognized the benefit of unused net operating loss carryforwards of US$2,174 million (2011 – US$2,119 million) for federal purposes in the U.S., which expire from 2028 to 2032.

Unremitted Earnings of Foreign Investments
Income taxes have not been provided on the unremitted earnings of foreign investments that the Company does not intend to repatriate in the foreseeable future. Deferred income tax liabilities would have increased at December 31, 2012 by approximately $144 million (2011 – $136 million) if there had been a provision for these taxes.

Income Tax Payments
Income tax payments of $190 million, net of refunds, were made in 2012 (2011 – refunds, net of payments made, of $84 million; 2010 – payments, net of refunds, of $53 million).

Reconciliation of Unrecognized Tax Benefit
Below is the reconciliation of the annual changes in the total unrecognized tax benefit:

at December 31 (millions of Canadian dollars)	2012		2011		2010
Unrecognized tax benefits at beginning of year	52		62		55
Gross increases – tax positions in prior years	2		9		7
Gross decreases – tax positions in prior years	(6	)	(7	)	(1	)
Gross increases – tax positions in current year	9		11		9
Settlements	–		–		(7	)
Lapses of statute of limitations	(8	)	(23	)	(1	)
Unrecognized tax benefits at end of year	49		52		62

TransCanada expects the enactment of certain Canadian federal tax legislation in the next 12 months which is expected to result in a favourable income tax adjustment of approximately $25 million. Otherwise, subject to the results of audit examinations by taxing authorities and other legislative amendments, TransCanada does not anticipate further adjustments to the unrecognized tax benefits during the next twelve months that would have a material impact on its financial statements.

TransCanada and its subsidiaries are subject to either Canadian federal and provincial income tax, U.S. federal, state and local income tax or the relevant income tax in other international jurisdictions. The Company has substantially concluded all Canadian federal and provincial income tax matters for the years through 2007. Substantially all material U.S. federal income tax matters have been concluded for years through 2007 and U.S. state and local income tax matters through 2007.

TransCanada's practice is to recognize interest and penalties related to income tax uncertainties in Income Tax Expense. Net tax expense for the year ended December 31, 2012 reflects a reversal of $2 million of interest expense and nil for penalties (2011 – $12 million reversal of interest expense and nil for penalties; 2010 – $3 million for interest expense and nil for penalties). At December 31, 2012, the Company had $5 million accrued for interest expense and nil accrued for penalties (December 31, 2011 – $7 million accrued for interest expense and nil accrued for penalties).

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NON-CONTROLLING INTERESTS (Tables)

12 Months Ended

Dec. 31, 2012

NON-CONTROLLING INTERESTS

Schedule of the Company's non-controlling interests included in the Consolidated Balance Sheet

at December 31 (millions of Canadian dollars)	2012	2011
Non-controlling interest in TC PipeLines, LP1	953	997
Preferred shares of TCPL	389	389
Non-controlling interest in Portland2	83	79
	1,425	1,465

Schedule of the Company's non-controlling interests included in the Consolidated Statement of Income

year ended December 31 (millions of Canadian dollars)	2012	2011	2010
Non-controlling interest in TC PipeLines, LP1	91	101	87
Preferred share dividends of TCPL	22	22	22
Non-controlling interest in Portland2	5	6	6
	118	129	115

1

Effective May 3, 2011, the non-controlling interest in TC PipeLines, LP increased from 61.8 per cent to 66.7 per cent due to the issuance of equity to non-controlling
interests in TC PipeLines, LP associated with the sale of 25 per cent interests in GTN LLC and Bison LLC pipelines from TransCanada to TC PipeLines, LP. The
non-controlling interest in TC PipeLines, LP from January 1, 2010 to May 3, 2011 was 61.8 per cent.

2

The non-controlling interests in Portland as at December 31, 2012 represented the 38.3 per cent interest not owned by TransCanada (2011 and 2010 – 38.3 per cent).

Schedule of Preferred Shares of Subsidiary

at December 31	Number of Shares	Dividend Rate per Share	Redemption Price per Share	2012	2011
	(thousands)			(millions of Canadian dollars)	(millions of Canadian dollars)
Cumulative First Preferred Shares of Subsidiary
Series U	4,000	$2.80	$50.00	195	195
Series Y	4,000	$2.80	$50.00	194	194
				389	389

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EQUITY INVESTMENTS (Tables)

12 Months Ended

Dec. 31, 2012

EQUITY INVESTMENTS

Schedule of equity investments

		Income/(Loss) from Equity Investments				Equity Investments
	Ownership Interest as at	year ended December 31				at December 31
(millions of Canadian dollars)	December 31, 2012	2012		2011	2010	2012	2011
Natural Gas Pipelines
Northern Border1		72		75	69	511	545
Iroquois	44.5%	41		40	40	174	181
TQM	50.0%	16		17	16	80	82
Other	Various	28		27	28	60	72
Energy
Bruce A	48.9%	(149	)	33	35	4,033	3,561
Bruce B	31.6%	163		77	138	69	115
ASTC Power Partnership	50.0%	40		84	41	42	58
Portlands Energy	50.0%	28		33	33	341	313
CrossAlta2		10		23	45	n/a	18
Other	Various	8		6	8	56	132
		257		415	453	5,366	5,077

1

The results reflect a 50 per cent interest in Northern Border as a result of the Company fully consolidating TC PipeLines, LP. At December 31, 2012, TransCanada had an ownership interest in TC PipeLines, LP of 33.3 per cent
(2011 – 33.3 per cent; 2010 – 38.2 per cent) and its effective ownership of Northern Border, net of non-controlling interests, was 16.7 per cent (2011 – 16.7 per cent; 2010 – 19.1 per cent).

2

In 2011, Property, Plant and Equipment included $63 million of assets owned directly by TransCanada through an undivided interest in the Crossfield joint venture which were utilized in the operations of the CrossAlta joint venture.
In December 2012, TransCanada acquired the remaining 40 per cent interest in CrossAlta to bring the Company's ownership interest to 100 per cent. The results reflect the Company's 60 per cent share of equity income up to
December 18, 2012. Refer to Note 23, Acquisitions and Dispositions, for additional information.

Summary of financial information for the equity investees

year ended December 31 (millions of Canadian dollars)	2012		2011		2010
Income
Revenues	3,860		4,042		3,920
Operating and other expenses	(3,090	)	(2,989	)	(2,773	)
Net income	717		929		1,009
Net income attributable to TransCanada	257		415		453

at December 31 (millions of Canadian dollars)	2012		2011
Balance Sheet
Current assets	1,593		1,430
Non current assets	12,154		11,550
Current liabilities	(1,187	)	(1,172	)
Non current liabilities	(3,787	)	(3,232	)

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NON-CONTROLLING INTERESTS (Details) (CAD) In Millions, except Share data in Thousands, unless otherwise specified	12 Months Ended						0 Months Ended		12 Months Ended													12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2012 TC PipeLines, LP	Dec. 31, 2011 TC PipeLines, LP	Dec. 31, 2010 TC PipeLines, LP	May 03, 2011 TC PipeLines, LP GTN	May 03, 2011 TC PipeLines, LP Bison	Dec. 31, 2012 TransCanada PipeLines Limited Series U	Dec. 31, 2011 TransCanada PipeLines Limited Series U	Dec. 31, 2010 TransCanada PipeLines Limited Series U	Dec. 31, 2012 TransCanada PipeLines Limited Series Y	Dec. 31, 2011 TransCanada PipeLines Limited Series Y	Dec. 31, 2010 TransCanada PipeLines Limited Series Y	Dec. 31, 2012 Portland	Dec. 31, 2011 Portland	Dec. 31, 2010 Portland	Dec. 31, 2012 Noncontrolling Interest [Member] TC PipeLines, LP	Dec. 31, 2011 Noncontrolling Interest [Member] TC PipeLines, LP	Dec. 31, 2010 Noncontrolling Interest [Member] TC PipeLines, LP	May 03, 2011 Noncontrolling Interest [Member] TC PipeLines, LP	Dec. 31, 2012 Noncontrolling Interest [Member] TransCanada PipeLines Limited	Dec. 31, 2011 Noncontrolling Interest [Member] TransCanada PipeLines Limited	Dec. 31, 2010 Noncontrolling Interest [Member] TransCanada PipeLines Limited	Dec. 31, 2012 Noncontrolling Interest [Member] Portland	Dec. 31, 2011 Noncontrolling Interest [Member] Portland	Dec. 31, 2010 Noncontrolling Interest [Member] Portland
Non-controlling interest included in the Consolidated Balance Sheet
Non-controlling interest	1,425	1,465																953	997						83	79
Preferred shares of TCPL									195	195		194	194									389	389
Non-controlling interests included in the Consolidated Statement of Income
Net income attributable to non-controlling interests	118	129	115															91	101	87					5	6	6
Preferred share dividends of TCPL																						22	22	22
Additional information
Percentage of non-controlling interests																		66.70%			61.80%				38.30%	38.30%	38.30%
Ownership interest from TransCanada to TC Pipelines							25.00%	25.00%
Preferred Shares of TCPL
Number of Shares Outstanding									4,000	4,000		4,000	4,000
Dividend Rate per Share (in Canadian dollars per share)									2.80	2.80		2.80	2.80
Redemption Price per Share (in Canadian dollars per share)									50.00			50.00
Cash Dividends
Cash dividends paid									22	22	22	22	22	22
Cash dividends paid (in Canadian dollars per share)									2.80	2.80	2.80	2.80	2.80	2.80
Fees received for services provided				3	2	2									7	7	7

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ACQUISITIONS AND DISPOSITIONS (Details) In Millions, except Share data, unless otherwise specified	12 Months Ended	0 Months Ended						0 Months Ended
	Dec. 31, 2012 CAD	Dec. 18, 2012 CrossAlta Energy CAD	May 03, 2011 TC PipeLines, LP USD ($)	May 03, 2011 TC PipeLines, LP CAD	Dec. 31, 2012 TC PipeLines, LP	Dec. 31, 2011 TC PipeLines, LP	Dec. 31, 2010 TC PipeLines, LP	May 03, 2011 TC PipeLines, LP GTN LLC and Bison LLC USD ($)	May 03, 2011 TC PipeLines, LP GTN LLC	May 03, 2011 TC PipeLines, LP Bison LLC	May 03, 2011 TC PipeLines, LP Bridge loan facility GTN LLC and Bison LLC USD ($)	May 03, 2011 TC PipeLines, LP Senior revolving credit facility GTN LLC and Bison LLC USD ($)
ACQUISITIONS AND DISPOSITIONS
Percentage interest purchased		40.00%
Amount for which interest is acquired in cash, net of cash acquired	214	214
Ownership interest after acquisition (as a percent)		100.00%
Ownership interest prior to acquisition (as a percent)		60.00%
Ownership interest from TransCanada to TC Pipelines									25.00%	25.00%
Aggregate purchase price of interest in entities sold by TransCanada								605
Long-term debt included in aggregate purchase price								81
Percentage of acquired long-term debt								25.00%
Number of common units sold in an underwritten public offering (in shares)								7,245,000
Number of common units purchased by the underwriters upon full exercise of an over-allotment option (in shares)								945,000
Price per common unit issued (in dollars per unit)								$ 47.58
Net proceeds from issuance of common units								331
Amount drawn on credit facility to finance the acquisition											61	125
Maximum borrowing capacity												250
Capital contribution made to maintain general partnership interest			7
General partnership interest (as a percent)			2.00%	2.00%
Ownership interest in subsidiary (as a percent)			38.20%	38.20%	33.30%	33.30%	38.20%
After-tax dilution gain recorded in additional paid-in capital				30
Pre-tax dilution gain recorded in additional paid-in capital as a result of decrease in ownership interest				50

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SEGMENTED INFORMATION (Tables)

12 Months Ended

Dec. 31, 2012

SEGMENTED INFORMATION

Schedule of segmented information

year ended December 31, 2012 (millions of Canadian dollars)	Natural Gas Pipelines		Oil Pipelines		Energy		Corporate		Total
Revenues	4,264		1,039		2,704		–		8,007
Income from equity investments	157		–		100		–		257
Plant operating costs and other	(1,365	)	(296	)	(819	)	(97	)	(2,577	)
Commodity purchases resold	–		–		(1,049	)	–		(1,049	)
Property taxes	(315	)	(45	)	(74	)	–		(434	)
Depreciation and amortization	(933	)	(145	)	(283	)	(14	)	(1,375	)
	1,808		553		579		(111	)	2,829
Interest expense									(976	)
Interest income and other									85
Income before income taxes									1,938
Income tax expense									(466	)
Net Income									1,472
Net Income Attributable to Non-Controlling Interests									(118	)
Net Income Attributable to Controlling Interests									1,354
Preferred Share Dividends									(55	)
Net Income Attributable to Common Shares									1,299

year ended December 31, 2011 (millions of Canadian dollars)	Natural Gas Pipelines		Oil Pipelines1		Energy		Corporate		Total
Revenues	4,244		827		2,768		–		7,839
Income from equity investments	159		–		256		–		415
Plant operating costs and other	(1,221	)	(209	)	(842	)	(86	)	(2,358	)
Commodity purchases resold	–		–		(991	)	–		(991	)
Property taxes	(307	)	(31	)	(72	)	–		(410	)
Depreciation and amortization	(923	)	(130	)	(261	)	(14	)	(1,328	)
	1,952		457		858		(100	)	3,167
Interest expense									(937	)
Interest income and other									55
Income before income taxes									2,285
Income tax expense									(575	)
Net Income									1,710
Net Income Attributable to Non-Controlling Interests									(129	)
Net Income Attributable to Controlling Interests									1,581
Preferred Share Dividends									(55	)
Net Income Attributable to Common Shares									1,526

1

Commencing in February 2011, TransCanada began recording earnings for the Keystone Pipeline System.

year ended December 31, 2010 (millions of Canadian dollars)	Natural Gas Pipelines		Oil Pipelines	Energy		Corporate		Total
Revenues	4,122		–	2,730		–		6,852
Income from equity investments	153		–	300		–		453
Plant operating costs and other	(1,165	)	–	(805	)	(99	)	(2,069	)
Commodity purchases resold	–		–	(1,178	)	–		(1,178	)
Property taxes	(294	)	–	(71	)	–		(365	)
Depreciation and amortization	(913	)	–	(247	)	–		(1,160	)
Valuation provision	(146	)	–	–		–		(146	)
	1,757		–	729		(99	)	2,387
Interest expense								(701	)
Interest income and other								94
Income before income taxes								1,780
Income tax expense								(387	)
Net Income								1,393
Net Income Attributable to Non-Controlling Interests								(115	)
Net Income Attributable to Controlling Interests								1,278
Preferred Share Dividends								(45	)
Net Income Attributable to Common Shares								1,233

Schedule of total assets

at December 31 (millions of Canadian dollars)	2012	2011
Natural Gas Pipelines	23,210	23,161
Oil Pipelines	10,485	9,440
Energy	13,157	13,269
Corporate	1,481	1,468
	48,333	47,338

Schedule of geographic information

year ended December 31 (millions of Canadian dollars)	2012	2011	2010
Revenues1
Canada – domestic	3,527	3,929	3,178
Canada – export	1,121	1,087	838
United States	3,252	2,752	2,796
Mexico	107	71	40
	8,007	7,839	6,852

1

Revenues are attributed based on the country in which the product or service originated.

at December 31 (millions of Canadian dollars)	2012	2011
Plant, Property and Equipment
Canada	18,054	17,552
United States	14,904	14,388
Mexico	755	527
	33,713	32,467

Schedule of capital expenditures

year ended December 31 (millions of Canadian dollars)	2012	2011	2010
Natural Gas Pipelines	1,389	917	1,192
Oil Pipelines	1,145	1,204	2,696
Energy	24	384	473
Corporate	37	8	15
	2,595	2,513	4,376

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PREFERRED SHARES (Tables)

12 Months Ended

Dec. 31, 2012

PREFERRED SHARES

Schedule of preferred shares

at December 31	Number of Shares Authorized and Outstanding	Dividend Rate per Share	Redemption Price per Share	2012	2011
	(thousands)			(millions of Canadian dollars)1	(millions of Canadian dollars)1
Cumulative First Preferred Shares
Series 1	22,000	$1.15	$25.00	539	539
Series 3	14,000	$1.00	$25.00	343	343
Series 5	14,000	$1.10	$25.00	342	342
				1,224	1,224

1

Net of underwriting commissions and deferred income taxes.

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NOTES PAYABLE (Details)										12 Months Ended							12 Months Ended
	Dec. 31, 2012 CAD	Dec. 31, 2011 CAD	Dec. 31, 2012 Notes payable Canadian dollars CAD	Dec. 31, 2011 Notes payable Canadian dollars CAD	Dec. 31, 2012 Notes payable U.S. dollars USD ($)	Dec. 31, 2012 Notes payable U.S. dollars CAD	Dec. 31, 2011 Notes payable U.S. dollars USD ($)	Dec. 31, 2011 Notes payable U.S. dollars CAD	Dec. 31, 2012 Revolving and demand credit facilities CAD	Dec. 31, 2012 Committed, syndicated, revolving, extendible credit facility TransCanada PipeLines Limited CAD	Dec. 31, 2011 Committed, syndicated, revolving, extendible credit facility TransCanada PipeLines Limited CAD	Dec. 31, 2010 Committed, syndicated, revolving, extendible credit facility TransCanada PipeLines Limited CAD	Dec. 31, 2012 Committed, syndicated, revolving, extendible credit facility TC Keystone CAD	Dec. 31, 2011 Committed, syndicated, revolving, extendible credit facility TC Keystone CAD	Dec. 31, 2010 Committed, syndicated, revolving, extendible credit facility TC Keystone CAD	Dec. 31, 2012 Committed, syndicated, revolving, extendible credit facility TC Keystone USD ($)	Dec. 31, 2012 Committed, syndicated, revolving, extendible credit facility U.S. dollars TCPL USA USD ($)	Dec. 31, 2011 Committed, syndicated, revolving, extendible credit facility U.S. dollars TCPL USA USD ($)	Dec. 31, 2010 Committed, syndicated, revolving, extendible credit facility U.S. dollars TCPL USA USD ($)	Dec. 31, 2011 Senior revolving credit facility TCPL USA CAD	Dec. 31, 2010 Senior revolving credit facility TCPL USA CAD	Dec. 31, 2012 Senior revolving credit facility TCPL USA USD ($)	Dec. 31, 2012 Demand credit facility CAD
Notes payable
Amount outstanding	2,275,000,000	1,863,000,000	803,000,000	466,000,000	$ 1,480,000,000	1,472,000,000	$ 1,373,000,000	1,397,000,000
Weighted Average Interest Rate per Annum (as a percent)			1.20%	1.20%	0.40%	0.40%	0.50%	0.50%
Amount available for borrowing									5,300,000,000
Maximum borrowing capacity										2,000,000,000						1,000,000,000	1,000,000,000					300,000,000	1,000,000,000
Cost to maintain the facility										4,000,000	2,000,000	2,000,000	1,000,000	4,000,000	5,000,000		1,000,000	4,000,000	4,000,000	1,000,000	1,000,000
Initial maximum borrowing capacity																						1,000,000,000
Amount used for letters of credit																							627,000,000

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PLANT, PROPERTY AND EQUIPMENT (Details) (CAD)	12 Months Ended																																																																																												12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2012 Natural Gas Pipelines	Dec. 31, 2011 Natural Gas Pipelines	Dec. 31, 2012 Natural Gas Pipelines Pipeline Mexico	Dec. 31, 2011 Natural Gas Pipelines Pipeline Mexico	Dec. 31, 2012 Natural Gas Pipelines Canadian Mainline	Dec. 31, 2011 Natural Gas Pipelines Canadian Mainline	Dec. 31, 2012 Natural Gas Pipelines Canadian Mainline Pipeline	Dec. 31, 2011 Natural Gas Pipelines Canadian Mainline Pipeline	Dec. 31, 2012 Natural Gas Pipelines Canadian Mainline Compression	Dec. 31, 2011 Natural Gas Pipelines Canadian Mainline Compression	Dec. 31, 2012 Natural Gas Pipelines Canadian Mainline Metering and other	Dec. 31, 2011 Natural Gas Pipelines Canadian Mainline Metering and other	Dec. 31, 2012 Natural Gas Pipelines Canadian Mainline Property, plant and equipment excluding under construction	Dec. 31, 2011 Natural Gas Pipelines Canadian Mainline Property, plant and equipment excluding under construction	Dec. 31, 2012 Natural Gas Pipelines Canadian Mainline Under construction	Dec. 31, 2011 Natural Gas Pipelines Canadian Mainline Under construction	Dec. 31, 2012 Natural Gas Pipelines Alberta System	Dec. 31, 2011 Natural Gas Pipelines Alberta System	Dec. 31, 2012 Natural Gas Pipelines Alberta System Pipeline	Dec. 31, 2011 Natural Gas Pipelines Alberta System Pipeline	Dec. 31, 2012 Natural Gas Pipelines Alberta System Compression	Dec. 31, 2011 Natural Gas Pipelines Alberta System Compression	Dec. 31, 2012 Natural Gas Pipelines Alberta System Metering and other	Dec. 31, 2011 Natural Gas Pipelines Alberta System Metering and other	Dec. 31, 2012 Natural Gas Pipelines Alberta System Property, plant and equipment excluding under construction	Dec. 31, 2011 Natural Gas Pipelines Alberta System Property, plant and equipment excluding under construction	Dec. 31, 2012 Natural Gas Pipelines Alberta System Under construction	Dec. 31, 2011 Natural Gas Pipelines Alberta System Under construction	Dec. 31, 2012 Natural Gas Pipelines ANR	Dec. 31, 2011 Natural Gas Pipelines ANR	Dec. 31, 2012 Natural Gas Pipelines ANR Pipeline	Dec. 31, 2011 Natural Gas Pipelines ANR Pipeline	Dec. 31, 2012 Natural Gas Pipelines ANR Compression	Dec. 31, 2011 Natural Gas Pipelines ANR Compression	Dec. 31, 2012 Natural Gas Pipelines ANR Metering and other	Dec. 31, 2011 Natural Gas Pipelines ANR Metering and other	Dec. 31, 2012 Natural Gas Pipelines ANR Property, plant and equipment excluding under construction	Dec. 31, 2011 Natural Gas Pipelines ANR Property, plant and equipment excluding under construction	Dec. 31, 2012 Natural Gas Pipelines ANR Under construction	Dec. 31, 2011 Natural Gas Pipelines ANR Under construction	Dec. 31, 2012 Natural Gas Pipelines Other Natural Gas Pipelines	Dec. 31, 2011 Natural Gas Pipelines Other Natural Gas Pipelines	Dec. 31, 2012 Natural Gas Pipelines Other Natural Gas Pipelines Property, plant and equipment excluding under construction	Dec. 31, 2011 Natural Gas Pipelines Other Natural Gas Pipelines Property, plant and equipment excluding under construction	Dec. 31, 2012 Natural Gas Pipelines Other Natural Gas Pipelines Under construction	Dec. 31, 2011 Natural Gas Pipelines Other Natural Gas Pipelines Under construction	Dec. 31, 2012 Natural Gas Pipelines GTN Pipeline	Dec. 31, 2011 Natural Gas Pipelines GTN Pipeline	Dec. 31, 2012 Natural Gas Pipelines Great Lakes Pipeline	Dec. 31, 2011 Natural Gas Pipelines Great Lakes Pipeline	Dec. 31, 2012 Natural Gas Pipelines Foothills Pipeline	Dec. 31, 2011 Natural Gas Pipelines Foothills Pipeline	Dec. 31, 2012 Natural Gas Pipelines Other Pipeline	Dec. 31, 2011 Natural Gas Pipelines Other Pipeline	Dec. 31, 2012 Oil Pipelines	Dec. 31, 2011 Oil Pipelines	Dec. 31, 2012 Oil Pipelines Under construction	Dec. 31, 2011 Oil Pipelines Under construction	Dec. 31, 2012 Oil Pipelines Keystone Pipeline	Dec. 31, 2011 Oil Pipelines Keystone Pipeline	Dec. 31, 2012 Oil Pipelines Keystone Property, plant and equipment excluding under construction	Dec. 31, 2011 Oil Pipelines Keystone Property, plant and equipment excluding under construction	Dec. 31, 2012 Oil Pipelines Keystone Under construction	Dec. 31, 2011 Oil Pipelines Keystone Under construction	Dec. 31, 2012 Oil Pipelines Keystone Pumping equipment	Dec. 31, 2011 Oil Pipelines Keystone Pumping equipment	Dec. 31, 2012 Oil Pipelines Keystone Tanks and other	Dec. 31, 2011 Oil Pipelines Keystone Tanks and other	Dec. 31, 2012 Oil Pipelines Gulf Coast Project Under construction	Dec. 31, 2011 Oil Pipelines Gulf Coast Project Under construction	Dec. 31, 2012 Energy	Dec. 31, 2011 Energy	Dec. 18, 2012 Energy CrossAlta Gas Storage & Services Ltd.	Dec. 31, 2012 Energy Property, plant and equipment excluding under construction	Dec. 31, 2011 Energy Property, plant and equipment excluding under construction	Dec. 31, 2012 Energy Under construction	Dec. 31, 2011 Energy Under construction	Dec. 31, 2012 Energy Natural Gas - Ravenswood	Dec. 31, 2011 Energy Natural Gas - Ravenswood	Dec. 31, 2012 Energy Natural Gas - Other	Dec. 31, 2011 Energy Natural Gas - Other	Dec. 31, 2012 Energy Hydro	Dec. 31, 2011 Energy Hydro	Dec. 31, 2012 Energy Wind	Dec. 31, 2011 Energy Wind	Dec. 31, 2012 Energy Natural Gas Storage	Dec. 31, 2011 Energy Natural Gas Storage	Dec. 31, 2012 Energy Other	Dec. 31, 2011 Energy Other	Dec. 31, 2012 Energy Facilities under PPAs	Dec. 31, 2011 Energy Facilities under PPAs	Dec. 31, 2010 Energy Facilities under PPAs	Dec. 31, 2012 Corporate	Dec. 31, 2011 Corporate
Plant, property and equipment
Cost	50,253,000,000	47,873,000,000		32,330,000,000	31,200,000,000	536,000,000	547,000,000	12,725,000,000	12,558,000,000	8,801,000,000	8,785,000,000	3,370,000,000	3,362,000,000	391,000,000	383,000,000	12,562,000,000	12,530,000,000	163,000,000	28,000,000	10,520,000,000	9,778,000,000	7,214,000,000	6,701,000,000	1,885,000,000	1,778,000,000	958,000,000	931,000,000	10,057,000,000	9,410,000,000	463,000,000	368,000,000	1,961,000,000	1,912,000,000	864,000,000	858,000,000	514,000,000	510,000,000	520,000,000	524,000,000	1,898,000,000	1,892,000,000	63,000,000	20,000,000	7,124,000,000	6,952,000,000	6,827,000,000	6,919,000,000	297,000,000	33,000,000	1,565,000,000	1,589,000,000	1,544,000,000	1,577,000,000	1,634,000,000	1,630,000,000	1,548,000,000	1,576,000,000	10,507,000,000	9,387,000,000	3,678,000,000	2,433,000,000	4,897,000,000	4,904,000,000	6,829,000,000	6,954,000,000			1,560,000,000	1,502,000,000	372,000,000	548,000,000			7,262,000,000	7,157,000,000		7,126,000,000	6,849,000,000	136,000,000	308,000,000	1,799,000,000	1,799,000,000	2,975,000,000	3,002,000,000	634,000,000	620,000,000	907,000,000	843,000,000	677,000,000	454,000,000	134,000,000	131,000,000	601,000,000	605,000,000		154,000,000	129,000,000
Accumulated Depreciation	16,540,000,000	15,406,000,000		14,782,000,000	13,998,000,000	59,000,000	39,000,000	7,254,000,000	6,898,000,000	5,192,000,000	4,958,000,000	1,880,000,000	1,765,000,000	182,000,000	175,000,000	7,254,000,000	6,898,000,000			4,818,000,000	4,580,000,000	3,221,000,000	3,062,000,000	1,177,000,000	1,109,000,000	420,000,000	409,000,000	4,818,000,000	4,580,000,000			202,000,000	178,000,000	49,000,000	47,000,000	72,000,000	72,000,000	81,000,000	59,000,000	202,000,000	178,000,000			2,508,000,000	2,342,000,000	2,508,000,000	2,342,000,000			411,000,000	370,000,000	750,000,000	741,000,000	1,062,000,000	1,005,000,000	226,000,000	187,000,000	275,000,000	133,000,000			177,000,000	80,000,000	275,000,000	133,000,000			75,000,000	38,000,000	23,000,000	15,000,000			1,429,000,000	1,224,000,000		1,429,000,000	1,224,000,000			290,000,000	220,000,000	746,000,000	665,000,000	106,000,000	90,000,000	118,000,000	88,000,000	83,000,000	78,000,000	86,000,000	83,000,000	55,000,000	34,000,000		54,000,000	51,000,000
Net Book Value	33,713,000,000	32,467,000,000		17,548,000,000	17,202,000,000	477,000,000	508,000,000	5,471,000,000	5,660,000,000	3,609,000,000	3,827,000,000	1,490,000,000	1,597,000,000	209,000,000	208,000,000	5,308,000,000	5,632,000,000	163,000,000	28,000,000	5,702,000,000	5,198,000,000	3,993,000,000	3,639,000,000	708,000,000	669,000,000	538,000,000	522,000,000	5,239,000,000	4,830,000,000	463,000,000	368,000,000	1,759,000,000	1,734,000,000	815,000,000	811,000,000	442,000,000	438,000,000	439,000,000	465,000,000	1,696,000,000	1,714,000,000	63,000,000	20,000,000	4,616,000,000	4,610,000,000	4,319,000,000	4,577,000,000	297,000,000	33,000,000	1,154,000,000	1,219,000,000	794,000,000	836,000,000	572,000,000	625,000,000	1,322,000,000	1,389,000,000	10,232,000,000	9,254,000,000	3,678,000,000	2,433,000,000	4,720,000,000	4,824,000,000	6,554,000,000	6,821,000,000			1,485,000,000	1,464,000,000	349,000,000	533,000,000			5,833,000,000	5,933,000,000		5,697,000,000	5,625,000,000	136,000,000	308,000,000	1,509,000,000	1,579,000,000	2,229,000,000	2,337,000,000	528,000,000	530,000,000	789,000,000	755,000,000	594,000,000	376,000,000	48,000,000	48,000,000				100,000,000	78,000,000
Amount capitalized relating to the equity portion of AFUDC	300,000,000	302,000,000	587,000,000	32,000,000	23,000,000
Amount under construction																																																																								1,500,000,000	900,000,000
Amount of construction in progress, which remains subject to regulatory approvals																																																																		2,000,000,000	1,500,000,000
Revenues recognized through the sale of electricity	2,704,000,000	2,768,000,000	2,730,000,000																																																																																										73,000,000	53,000,000	15,000,000
Acquisition of ownership interest																																																																												40.00%

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LONG-TERM DEBT (Tables)

12 Months Ended

Dec. 31, 2012

LONG-TERM DEBT

Schedule of long-term debt

			2012		2011
Outstanding loan amounts (millions of Canadian dollars)		Maturity Dates	Outstanding December 31	Interest Rate1	Outstanding December 31	Interest Rate1
TRANSCANADA PIPELINES LIMITED
Debentures
	Canadian dollars	2014 to 2020	874	10.9%	874	10.9%
	U.S. dollars (2012 – US$400; 2011 – US$600)	2021	398	9.9%	610	9.5%
Medium-Term Notes
	Canadian dollars	2013 to 2041	4,549	5.9%	4,549	5.9%
Senior Unsecured Notes
	U.S. dollars (2012 – US$10,126; 2011 –  US$8,626)2	2013 to 2040	10,057	5.6%	8,759	6.2%
			15,878		14,792
NOVA GAS TRANSMISSION LTD.
Debentures and Notes
	Canadian dollars	2014 to 2024	382	11.5%	387	11.5%
	U.S. dollars (2012 – US$200; 2011 – US$375)	2023	199	7.9%	381	8.2%
Medium-Term Notes
	Canadian dollars	2025 to 2030	504	7.4%	504	7.4%
	U.S. dollars (2012 and 2011 – US$33)	2026	32	7.5%	33	7.5%
			1,117		1,305
TRANSCANADA PIPELINE USA LTD.
Bank Loan
	U.S. dollars (2012 – nil; 2011 – US$500)		–	–	509	0.6%
ANR PIPELINE COMPANY
Senior Unsecured Notes
	U.S. dollars (2012 and 2011 – US$432)	2021 to 2025	430	8.9%	438	8.9%
GAS TRANSMISSION NORTHWEST CORPORATION
Senior Unsecured Notes
	U.S. dollars (2012 and 2011 – US$325)	2015 to 2035	323	5.5%	331	5.5%
TC PIPELINES, LP
Unsecured Loan
	U.S. dollars (2012 – US$312; 2011 – US$363)	2017	310	1.5%	369	1.6%
Senior Unsecured Notes
	U.S. dollars (2012 and 2011 – US$350)	2021	348	4.7%	356	4.7%
			658		725
GREAT LAKES GAS TRANSMISSION LIMITED PARTNERSHIP
Senior Unsecured Notes
	U.S. dollars (2012 – US$354; 2011 – US$373)	2018 to 2030	352	7.8%	379	7.8%
TUSCARORA GAS TRANSMISSION COMPANY
Senior Secured Notes
	U.S. dollars (2012 – US$27; 2011 – US$30)	2017	27	4.0%	31	4.4%
PORTLAND NATURAL GAS TRANSMISSION SYSTEM
Senior Secured Notes3
	U.S. dollars (2012 – US$129; 2011 – US$147)	2018	128	6.1%	149	6.1%
			18,913		18,659
Less: Current Portion of Long-Term Debt			894		935
			18,019		17,724

1

Interest rates are the effective interest rates except for those pertaining to long-term debt issued for the Company's regulated operations, in which case the weighted average interest rate is presented as
approved by the regulators. Weighted average and effective interest rates are stated as at the respective outstanding dates.

2

Includes fair value adjustments of $10 million (2011 – $13 million) attributable to the hedged interest rate risk associated with interest rate swap fair value hedging relationships on US$350 million of debt at December 31, 2012 (2011 – US$350 million).

3

Secured by shipper transportation contracts, existing and new guarantees, letters of credit and collateral requirements.

Schedule of interest expense

year ended December 31 (millions of Canadian dollars)	2012		2011		2010
Interest on long-term debt	1,190		1,154		1,149
Interest on junior subordinated notes	63		63		65
Interest on short-term debt	16		16		15
Capitalized interest	(300	)	(302	)	(587	)
Amortization and other financial charges1	7		6		59
	976		937		701

1

Amortization and other financial charges includes amortization of transaction costs and debt discounts calculated using the effective interest method and changes
in the fair value of derivatives used to manage the Company's exposure to rising interest rates.

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CONSOLIDATED STATEMENT OF ACCUMULATED OTHER COMPREHENSIVE (LOSS)/INCOME (Parenthetical) (CAD) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Other Comprehensive Income/(Loss) Attributable to Non-Controlling Interests
Foreign currency translation gains and losses on investments in foreign operations, income tax expense (recovery)	32	(29)	65
Foreign currency translation gains and losses on investments in foreign operations, non-controlling interest (gain) loss	21	(24)	43
Change in fair value of net investment hedges, income tax expense (recovery)	15	(28)	37
Change in fair value of cash flow hedges, income tax expense (recovery)	13	(106)	(82)
Change in fair value of cash flow hedges, non-controlling interest loss (gain)		(1)	4
Reclassification to Net Income of gains and losses on cash flow hedges, income tax expense	81	77	28
Reclassification to Net Income of gains and losses on cash flow hedges, non-controlling interest gain		10	10
Unrealized actuarial gains and losses on pension and other post-retirement benefit plans, income tax recovery	(31)	(30)	(7)
Reclassification to Net Income of actuarial gains and losses and prior service costs on pension and other post-retirement benefit plans, income tax expense		3	3
Other Comprehensive Loss on equity investments, income tax recovery	(23)	(3)	(69)
Estimated losses related to cash flow hedges reported in AOCI and expected to be reclassified to Net Income in next 12 months, before tax	41
Estimated losses related to cash flow hedges reported in AOCI and expected to be reclassified to net income in the next 12 months, net of tax	24
Parent
Other Comprehensive Income/(Loss) Attributable to Non-Controlling Interests
Foreign currency translation gains and losses on investments in foreign operations, income tax expense (recovery)	32	(29)	65
Change in fair value of net investment hedges, income tax expense (recovery)	15	(28)	37
Change in fair value of cash flow hedges, income tax expense (recovery)	13	(106)	(82)
Reclassification to Net Income of gains and losses on cash flow hedges, income tax expense	81	77	28
Unrealized actuarial gains and losses on pension and other post-retirement benefit plans, income tax recovery	(31)	(30)	(7)
Reclassification to Net Income of actuarial gains and losses and prior service costs on pension and other post-retirement benefit plans, income tax expense		3	3
Other Comprehensive Loss on equity investments, income tax recovery	(23)	(3)	(69)

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GOODWILL (Details) (CAD) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Goodwill
Balance at the beginning of the period	3,534	3,457
Foreign exchange rate changes	(76)	77
Balance at the end of the period	3,458	3,534
Natural Gas Pipelines
Goodwill
Balance at the beginning of the period	2,693	2,634
Foreign exchange rate changes	(58)	59
Balance at the end of the period	2,635	2,693
Energy
Goodwill
Balance at the beginning of the period	841	823
Foreign exchange rate changes	(18)	18
Balance at the end of the period	823	841

XML

INTANGIBLE AND OTHER ASSETS (Tables)

12 Months Ended

Dec. 31, 2012

INTANGIBLES AND OTHER ASSETS

Schedule of intangible and other assets

at December 31 (millions of Canadian dollars)	2012	2011
PPAs1	376	428
Loans and advances2	196	224
Fair value of derivative contracts (Note 21)	187	202
Deferred income tax assets (Note 15)	105	132
Employee post-retirement benefits (Note 20)	11	–
Other	468	480
	1,343	1,466

1

The following amounts related to PPAs are included in Intangible and Other Assets:

Schedule of amounts related to PPAs included in Intangible and Other Assets

	2012			2011
at December 31 (millions of Canadian dollars)	Cost	Accumulated Amortization	Net Book Value	Cost	Accumulated Amortization	Net Book Value
Sheerness	585	273	312	585	234	351
Sundance A	225	161	64	225	148	77
	810	434	376	810	382	428

• Amortization expense for these PPAs was $52 million for the year ended December 31, 2012 (2011 and 2010 – $52 million). The expected annual amortization expense in each
  of the next five years is $52 million.

2

As at December 31, 2012, TransCanada held a $236 million (2011 – $265 million) note receivable from the seller of Ravenswood which bears interest at 6.75 per cent and
matures in 2040. The current portion of the note receivable of $40 million (2011 – $41 million) is included in Other Current Assets.

XML

PREFERRED SHARES

12 Months Ended

Dec. 31, 2012

PREFERRED SHARES

PREFERRED SHARES

19.  PREFERRED SHARES

at December 31	Number of Shares Authorized and Outstanding	Dividend Rate per Share	Redemption Price per Share	2012	2011
	(thousands)			(millions of Canadian dollars)1	(millions of Canadian dollars)1
Cumulative First Preferred Shares
Series 1	22,000	$1.15	$25.00	539	539
Series 3	14,000	$1.00	$25.00	343	343
Series 5	14,000	$1.10	$25.00	342	342
				1,224	1,224

1

Net of underwriting commissions and deferred income taxes.

The holders of the Series 1 preferred shares are entitled to receive fixed cumulative dividends at an annual rate of $1.15 per share, payable quarterly, for the initial five-year period ending December 31, 2014. The dividend rate will reset on December 31, 2014 and every five years thereafter to a yield per annum equal to the sum of the then five-year Government of Canada bond yield and 1.92 per cent. The Series 1 preferred shares are redeemable by TransCanada on December 31, 2014 and on December 31 of every fifth year thereafter at a price of $25.00 per share plus all accrued and unpaid dividends.

The Series 1 preferred shareholders have the right to convert their shares into Series 2 cumulative redeemable first preferred shares on December 31, 2014 and on December 31 of every fifth year thereafter. The holders of Series 2 preferred shares will be entitled to receive quarterly floating rate cumulative dividends at a yield per annum equal to the sum of the then 90-day Government of Canada treasury bill rate and 1.92 per cent.

The holders of the Series 3 preferred shares are entitled to receive fixed cumulative dividends at an annual rate of $1.00 per share, payable quarterly, for the initial five-year period ending June 30, 2015. The dividend rate will reset on June 30, 2015 and every five years thereafter to a yield per annum equal to the sum of the then five-year Government of Canada bond yield and 1.28 per cent. The Series 3 preferred shares are redeemable by TransCanada on June 30, 2015 and on June 30 of every fifth year thereafter at a price of $25.00 per share plus all accrued and unpaid dividends.

The Series 3 preferred shareholders have the right to convert their shares into Series 4 cumulative redeemable first preferred shares on June 30, 2015 and on June 30 of every fifth year thereafter. The holders of Series 4 preferred shares will be entitled to receive quarterly floating rate cumulative dividends at a yield per annum equal to the sum of the then 90-day Government of Canada treasury bill rate and 1.28 per cent.

The holders of the Series 5 preferred shares are entitled to receive fixed cumulative dividends at an annual rate of $1.10 per share, payable quarterly, for the initial five-and-a-half-year period ending January 30, 2016. The dividend rate will reset on January 30, 2016 and every five years thereafter to a yield per annum equal to the sum of the then five-year Government of Canada bond yield and 1.54 per cent. The Series 5 preferred shares are redeemable by TransCanada on January 30, 2016 and on January 30 of every fifth year thereafter at a price of $25.00 per share plus all accrued and unpaid dividends.

The Series 5 preferred shareholders have the right to convert their shares into Series 6 cumulative redeemable first preferred shares on January 30, 2016 and on January 30 of every fifth year thereafter. The holders of Series 6 preferred shares will be entitled to receive quarterly floating rate cumulative dividends at a yield per annum equal to the sum of the then 90-day Government of Canada treasury bill rate and 1.54 per cent.

Cash Dividends
In 2012, the Company made cash dividend payments of $25 million or $1.15 per Series 1 preferred share (2011 – $25 million or $1.15 per share, net of DRP; 2010 – $24 million or $1.15 per share, net of DRP), $14 million or $1.00 per Series 3 preferred share (2011 – $14 million or $1.00 per share, net of DRP; 2010 – $11 million or $0.8041 per share, net of DRP) and $16 million or $1.10 per Series 5 preferred share (2011 – $16 million or $1.10 per share, net of DRP; 2010 – $9 million or $0.3707 per share, net of DRP).

XML

COMMON SHARES

12 Months Ended

Dec. 31, 2012

COMMON SHARES

COMMON SHARES

18.  COMMON SHARES

		Number of Shares	Amount
		(thousands)	(millions of Canadian dollars)
Outstanding at January 1, 2010		684,359	11,338
	Dividend reinvestment and share purchase plan	10,670	378
	Exercise of options	1,201	29
Outstanding at December 31, 2010		696,230	11,745
	Dividend reinvestment and share purchase plan	5,371	202
	Exercise of options	2,260	64
Outstanding at December 31, 2011		703,861	12,011
	Exercise of options	1,600	58
Outstanding at December 31, 2012		705,461	12,069

Common Shares Issued and Outstanding
The Company is authorized to issue an unlimited number of common shares without par value.

Net Income per Share
Net income per share is calculated by dividing Net Income Attributable to Common Shares by the weighted average number of common shares outstanding. During the year, the weighted average number of common shares outstanding of 704.6 million and 705.7 million (2011 – 701.6 million and 702.8 million; 2010 – 690.5 million and 691.7 million) were used to calculate basic and diluted earnings per share, respectively. The increase in the weighted average number of shares for the diluted earnings per share calculation is due to the options exercisable under TransCanada's Stock Option Plan.

Stock Options

	Number of Options		Weighted Average Exercise Prices	Options Exercisable
	(thousands)			(thousands)
Outstanding at January 1, 2010	8,274		$30.56	6,212
Granted	1,367		$35.32
Exercised	(1,201	)	$22.04
Forfeited	(34	)	$27.35
Outstanding at December 31, 2010	8,406		$32.57	6,458
Granted	970		$38.02
Exercised	(2,260	)	$25.86
Forfeited	(16	)	$35.83
Outstanding at December 31, 2011	7,100		$35.44	5,165
Granted	1,978		$42.03
Exercised	(1,600	)	$33.13
Forfeited	(44	)	$36.55
Outstanding at December 31, 2012	7,434		$37.69	4,588

Stock options outstanding were as follows:

at December 31, 2012	Options Outstanding			Options Exercisable
Range of Exercise Prices	Number of Options	Weighted Average Exercise Price	Weighted Average Remaining Contractual Life	Number of Options	Weighted Average Exercise Price	Weighted Average Remaining Contractual Life
	(thousands)		(years)	(thousands)		(years)
$30.10 to $31.97	1,093	$31.95	3.2	1,093	$31.95	3.2
$32.40 to $35.08	1,387	$34.64	4.0	1,160	$34.55	4.0
$35.23 to $37.93	1,202	$37.52	5.0	556	$37.22	4.9
$38.10 to $39.75	1,750	$38.83	1.7	1,750	$38.83	1.7
$41.65 to $45.29	2,002	$42.03	6.1	29	$41.87	5.9
	7,434	$37.69	3.9	4,588	$35.93	2.7

An additional 2.4 million common shares were reserved for future issuance under TransCanada's Stock Option Plan at December 31, 2012. The weighted average fair value of options granted to purchase common shares under the Company's Stock Option Plan was determined to be $5.08 for the year ended December 31, 2012 (2011 – $2.94; 2010 – $5.76). The contractual life of options granted is seven years. Options may be exercised at a price determined at the time the option is awarded and vest 33.3 per cent on the anniversary date in each of the three years following the award. Forfeiture of stock options results from their expiration and, if not previously vested, upon resignation, retirement or termination of the option holder's employment. The Company used a binomial model for determining the fair value of options granted applying the following weighted average assumptions for 2012: 5.9 years of expected life (2011 and 2010 – 4.0 years); 1.6 per cent interest rate (2011 – 2.1 per cent; 2010 – 2.0 per cent); 19 per cent volatility (2011 – 14 per cent; 2010 – 27 per cent); 4.2 per cent dividend yield (2011 – 4.3 per cent; 2010 – 4.7 per cent) and a 15 per cent forfeiture rate (2011 – 15 per cent; 2010 – 15 per cent). Volatility is derived based on the average of both the historical and implied volatility of the Company's common shares. The amount expensed for stock options, with a corresponding increase in additional paid-in capital, was $5 million in 2012 (2011 – $5 million and 2010 – $4 million).

The total intrinsic value of options exercised in 2012 was $18 million (2011 – $34 million; 2010 – $17 million). As at December 31, 2012, the aggregate intrinsic value of the total options exercisable was $51 million and the total intrinsic value of options outstanding was $69 million. In 2012, the 1.0 million (2011 – 0.9 million; 2010 – 1.5 million) shares that vested had a fair value of $49 million (2011 – $42 million; 2010 – $57 million).

Shareholder Rights Plan
TransCanada's Shareholder Rights Plan is designed to provide the Board with sufficient time to explore and develop alternatives for maximizing shareholder value in the event of a takeover offer for the Company and to encourage the fair treatment of shareholders in connection with any such offer. Attached to each common share is one right that, under certain circumstances, entitles certain holders to purchase two common shares of the Company for the then current market price of one.

Cash Dividends
Cash dividends of $1,226 million or $1.74 per common share were paid in 2012 (2011 – $961 million or $1.66 per common share, net of the Dividend Reinvestment Plan (DRP); 2010 – $710 million or $1.58 per common share, net of DRP).

Dividend Reinvestment Plan
Under the Company's DRP, eligible holders of common or preferred shares of TransCanada and preferred shares of TCPL can reinvest their dividends and make optional cash payments to obtain TransCanada common shares. Commencing with the dividends declared in April 2011, dividends payable to shareholders who participate in the DRP are satisfied with common shares purchased on the open market determined on the basis of the weighted average purchase price of such common shares. Previously, common shares issued in lieu of cash dividends under the DRP were issued from treasury at a discount to the average market price in the five days before dividend payment. The discount was set at three per cent in 2010, and was reduced to two per cent commencing with the dividends declared in February 2011 and was eliminated completely in April 2011. In 2011 and 2010, TransCanada issued 5.4 million and 10.7 million common shares from treasury in accordance with the DRP in lieu of making cash dividend payments of $202 million and $378 million respectively.

XML

COMMITMENTS, CONTINGENCIES AND GUARANTEES (Details 3) (CAD) In Millions, unless otherwise specified			0 Months Ended	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 15, 2011 Ontario solar projects MW item	Dec. 31, 2012 Natural Gas Pipelines Capital expenditures	Dec. 31, 2012 Oil Pipelines Capital expenditures	Dec. 31, 2012 Energy Capital expenditures
Other Commitments
Commitment for capital expenditures			476	1,322	1,732	62
Number of ontario solar projects			9
Combined capacity of Ontario solar project (in Megawatts)			86
Term of PPAs with OPA under the feed-in-tariff program			P20Y
Contingencies
Amount accrued related to operating facilities for the estimated expenses to remediate the sites	37	49

XML

COMMITMENTS, CONTINGENCIES AND GUARANTEES (Tables)

12 Months Ended

Dec. 31, 2012

COMMITMENTS, CONTINGENCIES AND GUARANTEES

Schedule of future annual payments, net of sub-lease receipts, under the Company's operating leases for various premises, services and equipment

year ended December 31 (millions of Canadian dollars)	Minimum Lease Payments	Amounts Recoverable under Sub-leases		Net Payments
2013	82	(8	)	74
2014	80	(8	)	72
2015	80	(7	)	73
2016	81	(4	)	77
2017	80	(2	)	78
2018 and thereafter	374	(1	)	373
	777	(30	)	747

Schedule of generating capacities and expiry dates of the PPAs

	Megawatts	Expiry Date
Sundance A	560	December 31, 2017
Sundance B1	353	December 31, 2020
Sheerness	756	December 31, 2020

XML

NOTES PAYABLE (Tables)

12 Months Ended

Dec. 31, 2012

NOTES PAYABLE

Schedule of notes payable

	2012		2011
(millions of Canadian dollars)	Outstanding December 31	Weighted Average Interest Rate per Annum at December 31	Outstanding December 31	Weighted Average Interest Rate per Annum at December 31
Canadian dollars	803	1.2%	466	1.2%
U.S. dollars (2012 – US$1,480; 2011 – US$1,373)	1,472	0.4%	1,397	0.5%
	2,275		1,863

XML

EMPLOYEE POST-RETIREMENT BENEFITS

12 Months Ended

Dec. 31, 2012

EMPLOYEE POST-RETIREMENT BENEFITS

EMPLOYEE POST-RETIREMENT BENEFITS

20.  EMPLOYEE POST-RETIREMENT BENEFITS

The Company sponsors DB Plans for its employees. Pension benefits provided under the DB Plans are based on years of service and highest average earnings over three consecutive years of employment. Upon commencement of retirement, pension benefits in the Canadian DB Plans increase annually by a portion of the increase in the Consumer Price Index. Past service costs are amortized over the expected average remaining service life of employees, which is approximately nine years (2011 – eight years; 2010 – eight years).

The Company also provides its employees with a Savings Plan in Canada, DC Plans consisting of 401(k) Plans in the U.S., and post-employment benefits other than pensions, including termination benefits and life insurance and medical benefits beyond those provided by government-sponsored plans. Past service costs are amortized over the expected average remaining life expectancy of former employees, which was approximately 12 years at December 31, 2012 (2011 – 12 years; 2010 – 12 years). In 2012, the Company expensed $24 million (2011 – $23 million, 2010 – $21 million) for the Savings Plan and DC Plans.

Total cash payments for employee post-retirement benefits, consisting of cash contributed by the Company to the DB Plans and other benefit plans, was $114 million in 2012 (2011 – $93 million, 2010 – $127 million), including $24 million in 2012 (2011 – $23 million, 2010 – $21 million) related to the Savings Plan and DC Plans. In addition to these cash payments, in 2012 the Company provided a $48 million letter of credit to the Canadian DB Plan (2011 – $27 million), resulting in a total of $75 million provided to the Canadian DB Plan under letters of credit at December 31, 2012. The Company measures its accrued benefit obligations and the fair value of plan assets for accounting purposes as at December 31 of each year. The most recent actuarial valuation of the pension plans for funding purposes was as at January 1, 2013, and the next required valuation will be as at January 1, 2014.

at December 31	Pension Benefit Plans				Other Post-Retirement Benefit Plans
(millions of Canadian dollars)	2012		2011		2012		2011
Change in Benefit Obligation1
Benefit obligation – beginning of year	1,836		1,622		170		159
Service cost	66		54		2		2
Interest cost	94		91		8		9
Employee contributions	4		4		1		1
Benefits paid	(79	)	(71	)	(9	)	(9	)
Actuarial loss	227		131		16		7
Foreign exchange rate changes	(6	)	5		(2	)	1
Benefit obligation – end of year	2,142		1,836		186		170
Change in Plan Assets
Plan assets at fair value – beginning of year	1,656		1,636		29		29
Actual return on plan assets	165		21		4		–
Employer contributions	83		62		7		8
Employee contributions	4		4		1		1
Benefits paid	(79	)	(71	)	(9	)	(9	)
Foreign exchange rate changes	(4	)	4		–		–
Plan assets at fair value – end of year	1,825		1,656		32		29
Funded Status – Plan Deficit	(317	)	(180	)	(154	)	(141	)

1

The benefit obligation for the Company's pension benefit plan represents the projected benefit obligation. The benefit obligation for the Company's other post-retirement
benefit plans represents the accumulated post-retirement benefit obligation.

The amounts recognized in the Company's Balance Sheet for its DB plans and other post-retirement benefits plans are as follows:

at December 31	Pension Benefit Plans				Other Post-Retirement Benefit Plans
(millions of Canadian dollars)	2012		2011		2012		2011
Intangible and Other Assets (Note 10)	–		–		11		–
Other Long-Term Liabilities (Note 13)	(317	)	(180	)	(165	)	(141	)
	(317	)	(180	)	(154	)	(141	)

Included in the above benefit obligation and fair value of plan assets were the following amounts for plans that are not fully funded:

at December 31	Pension Benefit Plans				Other Post-Retirement Benefit Plans
(millions of Canadian dollars)	2012		2011		2012		2011
Benefit obligation	(2,142	)	(1,836	)	(186	)	(170	)
Plan assets at fair value	1,825		1,656		32		29
Funded Status – Deficit	(317	)	(180	)	(154	)	(141	)

The accumulated benefit obligation for all DB pension plans at December 31, 2012 is $1,966 million (2011 – $1,691 million).

The funded status based on the accumulated benefit obligation for all DB Plans is as follows:

at December 31 (millions of Canadian dollars)	2012		2011
Accumulated benefit obligation	(1,966	)	(1,691	)
Plan assets at fair value	1,825		1,656
Funded Status – Deficit	(141	)	(35	)

Included in the above accumulated benefit obligation and fair value of plan assets are the following amounts in respect of plans that are not fully funded.

at December 31 (millions of Canadian dollars)	2012		2011
Accumulated benefit obligation	(1,966	)	(446	)
Plan assets at fair value	1,825		391
Funded Status – Deficit	(141	)	(55	)

The Company pension plans' weighted average asset allocations and target allocations by asset category were as follows:

Asset Category

	Percentage of Plan Assets		Target Allocations
at December 31	2012	2011	2012
Debt securities	36%	39%	35% to 60%
Equity securities	64%	61%	40% to 65%
	100%	100%

Debt securities included the Company's debt of $2 million (0.1 per cent of total plan assets) and $2 million (0.1 per cent of total plan assets) at December 31, 2012 and 2011, respectively. Equity securities included the Company's common shares of $3 million (0.2 per cent of total plan assets) and $3 million (0.2 per cent of total plan assets) at December 31, 2012 and 2011, respectively. Pension plan assets are managed on a going concern basis, subject to legislative restrictions, and are diversified across asset classes to maximize returns at an acceptable level of risk. Asset mix strategies consider plan demographics and may include traditional equity and debt securities, as well as alternative assets such as infrastructure, private equity and derivatives to diversify risk. Derivatives are not used for speculative purposes and the use of leveraged derivatives is prohibited.

All investments are measured at fair value using market prices. Where the fair value cannot be readily determined by reference to generally available price quotations, the fair value is determined by considering the discounted cash flows on a risk-adjusted basis and by comparison to similar assets which are publicly traded.

The following table presents plan assets for DB Plans and other post-retirement benefits measured at fair value, which have been categorized into three categories based on a fair value hierarchy. In Level I, the fair value of assets is determined by reference to quoted prices in active markets for identical assets that the Company has the ability to access at the measurement date. In Level II, the fair value of assets is determined using valuation techniques, such as option pricing models and extrapolation using significant inputs, which are observable directly or indirectly. In Level III, the fair value of assets is determined using a market approach based on inputs that are unobservable and significant to the overall fair value measurement.

at December 31 (millions of			Quoted Prices in Active Markets (Level I)		Significant Other Observable Inputs (Level II)		Significant Unobservable Inputs (Level III)		Total		Percentage of Total Portfolio
Canadian dollars)			2012	2011	2012	2011	2012	2011	2012	2011	2012	2011
Asset Category
Cash and cash equivalents			17	25	–	–	–	–	17	25	1%	1%
Equity Securities:
	Canadian		400	374	113	95	–	–	513	469	28%	28%
	U.S.		309	251	38	55	–	–	347	306	19%	18%
	International		31	25	263	231	–	–	294	256	16%	15%
	Global		–	–	13	–	–	–	13	–	–	–
Fixed Income Securities:
	Canadian Bonds:
		Federal	–	–	314	303	–	–	314	303	17%	18%
		Provincial	–	–	161	158	–	–	161	158	9%	9%
		Municipal	–	–	5	4	–	–	5	4	–	–
		Corporate	–	–	65	47	–	–	65	47	4%	3%
	U.S. Bonds:
		State	–	–	33	29	–	–	33	29	2%	2%
		Corporate	–	–	45	29	–	–	45	29	2%	2%
	International:
		Corporate	–	–	9	9	–	–	9	9	–	1%
		Mortgage Backed	–	–	22	30	–	–	22	30	1%	2%
Other Investments:
	Private Equity Funds		–	–	–	–	19	20	19	20	1%	1%
			757	675	1,081	990	19	20	1,857	1,685	100%	100%

The following table presents the net change in the Level III fair value category:

(millions of Canadian dollars, pre-tax)	Private Equity Funds
Balance at December 31, 2010	21
Realized and unrealized losses	(2	)
Purchases and sales	1
Balance at December 31, 2011	20
Realized and unrealized losses	(1	)
Balance at December 31, 2012	19

The Company's expected funding contributions in 2013 are approximately $71 million for the DB Plans and approximately $33 million for the other post-retirement benefit plans, Savings Plan and DC Plans. In addition, the Company expects to provide a $59 million letter of credit to the Canadian DB Plan.

The following are estimated future benefit payments, which reflect expected future service:

(millions of Canadian dollars)	Pension Benefits	Other Post- Retirement Benefits
2013	90	9
2014	96	9
2015	101	10
2016	107	10
2017	111	11
2018 to 2022	636	58

The rate used to discount pension and other post-retirement benefit plan obligations was developed based on a yield curve of corporate AA bond yields at December 31, 2012. This yield curve is used to develop spot rates that vary based on the duration of the obligations. The estimated future cash flows for the pension and other post-retirement obligations were matched to the corresponding rates on the spot rate curve to derive a weighted average discount rate.

The significant weighted average actuarial assumptions adopted in measuring the Company's benefit obligations were as follows:

	Pension Benefit Plans		Other Post-Retirement Benefit Plans
at December 31	2012	2011	2012	2011
Discount rate	4.35%	5.05%	4.35%	5.10%
Rate of compensation increase	3.15%	3.15%

The significant weighted average actuarial assumptions adopted in measuring the Company's net benefit plan costs were as follows:

	Pension Benefit Plans			Other Post-Retirement Benefit Plans
year ended December 31	2012	2011	2010	2012	2011	2010
Discount rate	5.05%	5.55%	6.00%	5.10%	5.60%	6.00%
Expected long-term rate of return on plan assets	6.70%	6.95%	6.95%	6.40%	6.40%	7.80%
Rate of compensation increase	3.15%	3.10%	3.20%

The overall expected long-term rate of return on plan assets is based on historical and projected rates of return for the portfolio in aggregate and for each asset class in the portfolio. Assumed projected rates of return are selected after analyzing historical experience and estimating future levels and volatility of returns. Asset class benchmark returns, asset mix and anticipated benefit payments from plan assets are also considered in determining the overall expected rate of return. The discount rate is based on market interest rates of high-quality bonds that match the timing and benefits expected to be paid under each plan.

A 7.5 per cent average annual rate of increase in the per capita cost of covered health care benefits was assumed for 2013 measurement purposes. The rate was assumed to decrease gradually to five per cent by 2020 and remain at this level thereafter. A one per cent change in assumed health care cost trend rates would have the following effects:

(millions of Canadian dollars)	Increase	Decrease
Effect on total of service and interest cost components	1	(1	)
Effect on post-retirement benefit obligation	17	(14	)

The Company's net benefit cost is as follows:

year ended December 31	Pension Benefit Plans						Other Post-Retirement Benefit Plans
(millions of Canadian dollars)	2012		2011		2010		2012		2011		2010
Service cost	66		54		50		2		2		2
Interest cost	94		91		89		8		9		9
Expected return on plan assets	(113	)	(114	)	(108	)	(2	)	(2	)	(2	)
Amortization of actuarial loss	18		10		5		1		1		1
Amortization of past service cost	2		2		2		1		–		–
Amortization of regulatory asset	19		12		5		1		1		1
Amortization of transitional obligation related to regulated business	–		–		–		2		2		2
Net Benefit Cost Recognized	86		55		43		13		13		13

Pre-tax amounts recognized in AOCI were as follows:

at December 31	2012		2011		2010
(millions of Canadian dollars)	Pension Benefits	Other Post- Retirement Benefits	Pension Benefits	Other Post- Retirement Benefits	Pension Benefits	Other Post- Retirement Benefits
Net loss	362	33	282	29	179	24
Prior service cost	5	2	7	2	9	2
	367	35	289	31	188	26

The estimated net loss and prior service cost for the DB Plans that will be amortized from AOCI into net periodic benefit cost in 2013 are $31 million and $2 million, respectively. The estimated net loss and prior service cost for the other post-retirement plans that will be amortized from AOCI into net periodic benefit cost in 2013 is $2 million and nil, respectively.

Pre-tax amounts recognized in OCI were as follows:

at December 31	2012				2011				2010
(millions of Canadian dollars)	Pension Benefits		Other Post- Retirement Benefits		Pension Benefits		Other Post- Retirement Benefits		Pension Benefits		Other Post- Retirement Benefits
Amortization of net loss from AOCI to OCI	(19	)	(1	)	(10	)	(1	)	(5	)	(1	)
Amortization of prior service costs from AOCI to OCI	(2	)	–		(2	)	–		(2	)	–
Funded status adjustment	99		5		113		6		15		4
	78		4		101		5		8		3

XML

RISK MANAGEMENT AND FINANCIAL INSTRUMENTS

12 Months Ended

Dec. 31, 2012

RISK MANAGEMENT AND FINANCIAL INSTRUMENTS

RISK MANAGEMENT AND FINANCIAL INSTRUMENTS

21.  RISK MANAGEMENT AND FINANCIAL INSTRUMENTS

Risk Management Overview
TransCanada has exposure to market risk and counterparty credit risk. TransCanada engages in risk management activities with the objective of mitigating the impact of these risks on earnings, cash flow and, ultimately, shareholder value.

Risk management strategies, policies and limits are designed to ensure TransCanada's risks and related exposures are in line with the Company's business objectives and risk tolerance. Market risk and counterparty credit risk are managed within limits ultimately established by the Company's Board of Directors, implemented by senior management and monitored by risk management and internal audit personnel. The Board of Directors' Audit Committee oversees how management monitors compliance with market risk and counterparty credit risk management policies and procedures, and oversees management's review of the adequacy of the risk management framework. Internal audit personnel assist the Audit Committee in its oversight role by performing regular and ad-hoc reviews of risk management controls and procedures, the results of which are reported to the Audit Committee.

Market Risk
The Company constructs and invests in large infrastructure projects, purchases and sells energy commodities, issues short-term and long-term debt, including amounts in foreign currencies, and invests in foreign operations. Certain of these activities expose the Company to market risk from changes in commodity prices, foreign exchange rates and interest rates, which may affect the Company's earnings and the value of the financial instruments it holds.

The Company uses derivatives as part of its overall risk management strategy to assist in managing the exposure to market risk that results from these activities. Derivative contracts used to manage market risk generally consist of the following:

•

Forwards and futures contracts – contractual agreements to purchase or sell a specific financial instrument or commodity at a specified price and date in the future. TransCanada enters into foreign exchange and commodity forwards and futures to mitigate the impact of volatility in foreign exchange rates and commodity prices.

•

Swaps – contractual agreements between two parties to exchange streams of payments over time according to specified terms. The Company enters into interest rate, cross-currency and commodity swaps to mitigate the impact of changes in interest rates, foreign exchange rates and commodity prices.

•

Options – contractual agreements that convey the right, but not the obligation, of the purchaser to buy or sell a specific amount of a financial instrument or commodity at a fixed price, either at a fixed date or at any time within a specified period. The Company enters into option agreements to mitigate the risk of changes in interest rates, foreign exchange rates and commodity prices.

Where possible, derivative instruments are designated as hedges, but in some cases derivatives do not meet the specific criteria for hedge accounting treatment and are accounted for at fair value with changes in fair value recorded in Net Income in the period of change. This may expose the Company to increased variability in reported earnings because the fair value of the derivative instruments can fluctuate significantly from period to period, however, the Company enters into the arrangements as they are considered to be effective economic hedges.

Commodity Price Risk
The Company is exposed to commodity price movements as part of its normal business operations, particularly in relation to the prices of electricity and natural gas. A number of strategies are used to mitigate these exposures, including the following:

•

Subject to its overall risk management strategy, the Company commits a portion of its expected power supply to fixed-price medium-term or long-term sales contracts, while reserving an amount of unsold supply to mitigate operational and price risks in its asset portfolio.

•

The Company purchases a portion of the natural gas required for its power plants or enters into contracts that base the sale price of electricity on the cost of natural gas, effectively locking in a margin.

•

The Company's power sales commitments are fulfilled through power generation or purchased through contracts, thereby reducing the Company's exposure to fluctuating commodity prices.

•

The Company enters into offsetting or back-to-back positions using derivative instruments to manage price risk exposure in power and natural gas commodities created by certain fixed and variable pricing arrangements for different pricing indices and delivery points.

The Company assesses its commodity contracts and derivative instruments used to manage commodity risk to determine the appropriate accounting treatment. Contracts, with the exception of leases, have been assessed to determine whether they or certain aspects of them meet the definition of a derivative. Certain commodity purchase and sale contracts are derivatives but fair value accounting is not required, as they were entered into and continue to be held for the purpose of receipt or delivery in accordance with the Company's normal purchases and normal sales exemptions and are documented as such. In addition, fair value accounting is not required for other financial instruments that qualify for certain exemptions.

Natural Gas Storage Commodity Price Risk
TransCanada manages its exposure to seasonal natural gas price spreads in its non-regulated Natural Gas Storage business by economically hedging storage capacity with a portfolio of third-party storage capacity contracts and proprietary natural gas purchases and sales. TransCanada simultaneously enters into a forward purchase of natural gas for injection into storage and an offsetting forward sale of natural gas for withdrawal at a later period, thereby locking in future positive margins and effectively eliminating exposure to natural gas price movements. Fair value adjustments recorded each period on these forward contracts are not necessarily representative of the amounts that will be realized on settlement.

Foreign Exchange and Interest Rate Risk
Foreign exchange and interest rate risk is created by fluctuations in the fair value or cash flow of financial instruments due to changes in foreign exchange rates and interest rates.

A portion of TransCanada's earnings from its Natural Gas Pipelines, Oil Pipelines and Energy segments is generated in U.S. dollars and, therefore, fluctuations in the value of the Canadian dollar relative to the U.S. dollar can affect TransCanada's net income. This foreign exchange impact is partially offset by U.S. dollar-denominated financing costs and by the Company's hedging activities. TransCanada has a greater exposure to U.S. currency fluctuations than in prior years due to growth in its U.S. operations, partially offset by increased levels of U.S. dollar-denominated interest expense.

The Company uses foreign currency and interest rate derivatives to manage the foreign exchange and interest rate risks related to its debt and other U.S. dollar-denominated transactions. Certain of the realized gains and losses on these derivatives are deferred as regulatory assets and liabilities until they are recovered from or paid to the shippers in accordance with the terms of the shipping agreements.

TransCanada has floating interest rate debt which subjects it to interest rate cash flow risk. The Company uses a combination of interest rate swaps and options to manage its exposure to this risk.

Net Investment in Foreign Operations
The Company hedges its net investment in foreign operations (on an after-tax basis) with U.S. dollar-denominated debt, cross-currency interest rate swaps, forward foreign exchange contracts and foreign exchange options. At December 31, 2012, the Company had designated as a net investment hedge U.S. dollar-denominated debt with a carrying value of $11.1 billion (US$11.2 billion) (2011 – $10 billion (US$9.8 billion)) and a fair value of $14.3 billion (US$14.4 billion) (2011 – $12.7 billion (US$12.5 billion)). At December 31, 2012, $71 million (December 31, 2011 – $79 million) was included in Other Current Assets, $47 million (December 31, 2011 – $66 million) was included in Intangible and Other Assets, $6 million (December 31, 2011 – $15 million) was included in Accounts Payable and Other, and $30 million (December 31, 2011 – $41 million) was included in Other Long-Term Liabilities for the fair value of the forwards and swaps used to hedge the Company's net U.S. dollar investment in foreign operations.

The fair values and notional or principal amounts for the derivatives designated as a net investment hedge were as follows:

Asset/(Liability)

	2012		2011
at December 31 (millions of Canadian dollars)	Fair Value1	Notional or Principal Amount	Fair Value1		Notional or Principal Amount
U.S. dollar cross-currency swaps (maturing 2013 to 2019)2	82	US 3,800	93		US 3,850
U.S. dollar forward foreign exchange contracts (maturing 2013)	–	US 250	(4	)	US 725
	82	US 4,050	89		US 4,575

1

Fair values equal carrying values.

2

Net Income in 2012 included net realized gains of $30 million (2011 – gains of $27 million) related to the interest component of cross-currency swap settlements.

Counterparty Credit Risk
Counterparty credit risk represents the financial loss the Company would experience if a counterparty to a financial instrument failed to meet its obligations in accordance with the terms and conditions of the financial instruments with the Company.

Counterparty credit risk is managed through established credit management techniques, including conducting financial and other assessments to establish and monitor a counterparty's creditworthiness, setting exposure limits, monitoring exposures against these limits, using contract netting arrangements and obtaining financial assurances where warranted. In general, financial assurances include guarantees, letters of credit and cash. The Company monitors and manages its concentration of counterparty credit risk on an ongoing basis. The Company believes these measures minimize its counterparty credit risk but there is no certainty that they will protect it against all material losses.

TransCanada's maximum counterparty credit exposure with respect to financial instruments at the Balance Sheet date, without taking into account security held, consisted of accounts receivable, portfolio investments recorded at fair value, the fair value of derivative assets and notes, and loans and advances receivable. The carrying amounts and fair values of these financial assets, except amounts for derivative assets, are included in Accounts receivable and other, and Available for sale assets in the Non-Derivative Financial Instruments Summary table located in the Fair Values section of this note. The majority of counterparty credit exposure is with counterparties that are investment grade or the exposure is supported by financial assurances provided by investment grade parties. The Company regularly reviews its accounts receivable and records an allowance for doubtful accounts as necessary using the specific identification method. At December 31, 2012, there were no significant amounts past due or impaired, and there were no significant credit losses during the year.

At December 31, 2012, the Company had a credit risk concentration of $259 million (2011 – $274 million) due from a counterparty. This amount is expected to be fully collectible and is secured by a guarantee from the counterparty's parent company.

TransCanada has significant credit and performance exposures to financial institutions as they provide committed credit lines and cash deposit facilities, critical liquidity in the foreign exchange derivative, interest rate derivative and energy wholesale markets, and letters of credit to mitigate TransCanada's exposure to non-creditworthy counterparties.

As a level of uncertainty continues to exist in the global financial markets, TransCanada continues to closely monitor and reassess the creditworthiness of its counterparties. This has resulted in TransCanada reducing or mitigating its exposure to certain counterparties where it was deemed warranted and permitted under contractual terms. As part of its ongoing operations, TransCanada must balance its market and counterparty credit risks when making business decisions.

Fair Values

Non-derivative Instruments
Certain financial instruments included in Cash and Cash Equivalents, Accounts Receivable, Intangible and Other Assets, Notes Payable, Accounts Payable, Accrued Interest and Other Long-Term Liabilities have carrying amounts that approximate their fair value due to the nature of the item or the short time to maturity. The fair value of the Company's Notes Receivable is calculated by discounting future payments of interest and principal using forward interest rates. The fair value of Long-Term Debt was estimated based on quoted market prices for the same or similar debt instruments. The fair value of available for sale assets has been calculated using quoted market prices where available.

Derivative Instruments
The fair value of foreign exchange and interest rate derivatives have been calculated using the income approach which uses year-end market rates and applies a discounted cash flow valuation model. The fair value of power and natural gas derivatives and available for sale investments has been calculated using quoted market prices where available. In the absence of quoted market prices, third-party broker quotes or other valuation techniques have been used.

Credit risk has been taken into consideration when calculating the fair value of derivatives, Notes Receivable and Long-Term Debt.

Non-Derivative Financial Instruments Summary
The carrying and fair values of non-derivative financial instruments were as follows:

	2012		2011
at December 31 (millions of Canadian dollars)	Carrying Amount1	Fair Value2	Carrying Amount1	Fair Value2
Financial Assets
Cash and cash equivalents	551	551	654	654
Accounts receivable and other3	1,288	1,337	1,359	1,403
Available for sale assets3	44	44	23	23
	1,883	1,932	2,036	2,080
Financial Liabilities4
Notes payable	2,275	2,275	1,863	1,863
Accounts payable and other long-term liabilities5	1,535	1,535	1,329	1,329
Accrued interest	368	368	365	365
Long-term debt	18,913	24,573	18,659	23,757
Junior subordinated notes	994	1,054	1,016	1,027
	24,085	29,805	23,232	28,341

1

Recorded at amortized cost, except for $350 million (2011 – $350 million) of Long-Term Debt that is attributed to hedged risk and recorded at fair value. This debt, which is recorded at fair value on a recurring
basis, is classified in Level II of the fair value hierarchy using the income approach based on interest rates from external data service providers.

2

The fair value measurement of financial assets and liabilities recorded at amortized cost for which the fair value is not equal to the carrying value would be included in Level II of the fair value hierarchy using the
income approach based on interest rates from external data service providers.

3

At December 31, 2012, the Consolidated Balance Sheet included financial assets of $1.1 billion (2011 – $1.1 billion) in Accounts Receivable, $40 million (2011 – $41 million)
in Other Current Assets and $240 million (2011 – $247 million) in Intangible and Other Assets.

4

Consolidated Net Income in 2012 included losses of $10 million (2011 – losses of $13 million) for fair value adjustments attributable to the hedged interest rate risk associated with interest
rate swap fair value hedging relationships on US$350 million of debt at December 31, 2012 (2011 – US$350 million). There were no other unrealized gains or losses from fair value adjustments to the
non-derivative financial instruments.

5

At December 31, 2012, the Consolidated Balance Sheet included financial liabilities of $1.5 billion (2011 – $1.2 billion) in Accounts Payable and $38 million (2011 – $137 million)
in Other Long-Term Liabilities.

The following tables detail the remaining contractual maturities for TransCanada's non-derivative financial liabilities, including both the principal and interest cash flows at December 31, 2012:

Contractual Repayments of Financial Liabilities¹

	Payments Due by Period
(millions of Canadian dollars)	Total	2013	2014 and 2015	2016 and 2017	2018 and Thereafter
Notes payable	2,275	2,275	–	–	–
Long-term debt	18,913	894	2,531	1,769	13,719
Junior subordinated notes	994	–	–	–	994
	22,182	3,169	2,531	1,769	14,713

1

The anticipated timing of settlement of derivative contracts is presented in the Derivatives Instrument Summary in this note.

Interest Payments on Financial Liabilities

	Payments Due by Period
(millions of Canadian dollars)	Total	2013	2014 and 2015	2016 and 2017	2018 and Thereafter
Long-term debt	15,377	1,154	2,125	1,908	10,190
Junior subordinated notes	3,443	63	126	126	3,128
	18,820	1,217	2,251	2,034	13,318

Derivative Instruments Summary
Information for the Company's derivative instruments for 2012, excluding hedges of the Company's net investment in foreign operations, is as follows:

at December 31			2012
(all amounts in Canadian millions unless otherwise indicated)			Power		Natural Gas		Foreign Exchange		Interest
Derivative Instruments Held for Trading1
Fair Values2
	Assets		$139		$88		$1		$14
	Liabilities		$(176	)	$(104	)	$(2	)	$(14	)
Notional Values
	Volumes3
		Purchases	31,135		83		–		–
		Sales	31,066		65		–		–
	Canadian dollars		–		–		–		620
	U.S. dollars		–		–		US 1,408		US 200
	Cross-currency		–		–		–		–
Net unrealized (losses)/gains in the year4			$(30	)	$2		$(1	)	$–
Net realized gains/(losses) in the year4			$5		$(10	)	$26		$–
Maturity dates			2013-2017		2013-2016		2013		2013-2016
Derivative Instruments in Hedging Relationships5,6
Fair Values2
	Assets		$76		$–		$–		$10
	Liabilities		$(97	)	$(2	)	$(38	)	$–
Notional Values
	Volumes3
		Purchases	15,184		1		–		–
		Sales	7,200		–		–		–
	U.S. dollars		–		–		US 12		US 350
	Cross-currency		–		–		136/US 100		–
Net realized (losses)/gains in the year4			$(130	)	$(23	)	$–		$7
Maturity dates			2013-2018		2013		2013-2014		2013-2015

1

All derivative instruments held for trading have been entered into for risk management purposes and are subject to the Company's risk management strategies, policies and limits. These include derivatives that have not been
designated as hedges or do not qualify for hedge accounting treatment but have been entered into as economic hedges to manage the Company's exposures to market risk.

2

Fair values equal carrying values.

3

Volumes for power and natural gas derivatives are in GWh and billion cubic feet (Bcf), respectively.

4

Realized and unrealized gains and losses on held for trading derivative instruments used to purchase and sell power and natural gas are included net in Revenues. Realized and unrealized gains and losses on interest rate
and foreign exchange derivative financial instruments held for trading are included in Interest Expense and Interest Income and Other, respectively. The effective portion of the change in fair value of derivative
instruments in hedging relationships is initially recognized in OCI and reclassified to Revenues, Interest Expense and Interest Income and Other, as appropriate, as the original hedged item settles.

5

All hedging relationships are designated as cash flow hedges except for interest rate derivative instruments designated as fair value hedges with a fair value of $10 million and a notional amount of
US$350 million. In 2012, net realized gains on fair value hedges were $7 million and were included in Interest Expense. In 2012, the Company did not record any amounts in Net Income related to
ineffectiveness for fair value hedges.

6

In 2012, there were no gains or losses included in Net Income relating to discontinued cash flow hedges where it was probable that the anticipated transaction would not occur.

Derivative Instruments Summary
Information for the Company's derivative instruments for 2011, excluding hedges of the Company's net investment in foreign operations, is as follows:

at December 31			2011
(all amounts in Canadian millions unless otherwise indicated)			Power		Natural Gas		Foreign Exchange		Interest
Derivative Instruments Held for Trading1
Fair Values2
	Assets		$185		$176		$3		$22
	Liabilities		$(192	)	$(212	)	$(14	)	$(22	)
Notional Values
	Volumes3
		Purchases	21,905		103		–		–
		Sales	21,334		82		–		–
	Canadian dollars		–		–		–		684
	U.S. dollars		–		–		US 1,269		US 250
	Cross-currency		–		–		47/US 37		–
Net unrealized (losses)/gains in the year4			$(2	)	$(50	)	$(4	)	$1
Net realized gains/(losses) in the year4			$42		$(74	)	$10		$1
Maturity dates			2012-2016		2012-2016		2012		2012-2016
Derivative Instruments in Hedging Relationships5,6
Fair Values2
	Assets		$16		$3		$–		$13
	Liabilities		$(277	)	$(22	)	$(38	)	$(1	)
Notional Values
	Volumes3
		Purchases	17,188		8		–		–
		Sales	8,061		–		–		–
	U.S. dollars		–		–		US 73		US 600
	Cross-currency		–		–		136/US 100		–
Net realized losses in the year4			$(165	)	$(17	)	$–		$(16	)
Maturity dates			2012-2017		2012-2013		2012-2014		2012-2015

1

All derivative instruments held for trading have been entered into for risk management purposes and are subject to the Company's risk management strategies, policies and limits. These include
derivatives that have not been designated as hedges or do not qualify for hedge accounting treatment but have been entered into as economic hedges to manage the Company's exposures to market risk.

2

Fair values equal carrying values.

3

Volumes for power and natural gas derivatives are in GWh and Bcf, respectively.

4

Realized and unrealized gains and losses on held for trading derivative instruments used to purchase and sell power and natural gas are included net in Revenues. Realized and unrealized gains and
losses on interest rate and foreign exchange derivative instruments held for trading are included in Interest Expense and Interest Income and Other, respectively. The effective portion
of the change in fair value of derivative instruments in hedging relationships is initially recognized in OCI and reclassified to Revenues, Interest Expense and Interest Income and
Other, as appropriate, as the original hedged item settles.

5

All hedging relationships are designated as cash flow hedges except for interest rate derivative instruments designated as fair value hedges with a fair value of $13 million and a
notional amount of US$350 million. In 2011, net realized gains on fair value hedges were $7 million and were included in Interest Expense. In 2011, the Company did not record any amounts

in Net Income related to ineffectiveness for fair value hedges.

6

In 2011, there were no gains or losses included in Net Income relating to discontinued cash flow hedges where it was probable that the anticipated transaction would not occur.

Balance Sheet Presentation of Derivative Instruments
The fair value of the derivative instruments in the Company's Balance Sheet was as follows:

at December 31 (millions of Canadian dollars)	2012		2011
Current
Other current assets (Note 5)	259		361
Accounts payable and other (Note 12)	(283	)	(485	)
Long Term
Intangible and other assets (Note 10)	187		202
Other long-term liabilities (Note 13)	(186	)	(349	)

Derivatives in Cash Flow Hedging Relationships
The components of OCI related to derivatives in cash flow hedging relationships are as follows:

	Cash Flow Hedges1
	Power			Natural Gas				Foreign Exchange			Interest
year ended December 31 (millions of Canadian dollars, pre-tax)	2012	2011		2012		2011		2012		2011	2012	2011
Change in fair value of derivative instruments recognized in OCI (effective portion)	83	(263	)	(21	)	(59	)	(1	)	5	–	(1	)
Reclassification of gains and losses on derivative instruments from AOCI to Net Income (effective portion)	147	81		54		100		–		–	18	43
Gains and losses on derivative instruments recognized in earnings (ineffective portion)	7	–		–		–		–		–	–	–

1

No amounts have been excluded from the assessment of hedge effectiveness.

Credit Risk Related Contingent Features
Derivative contracts entered into to manage market risk often contain financial assurance provisions that allow parties to the contracts to manage credit risk. These provisions may require collateral to be provided if a credit-risk-related contingent event occurs, such as a downgrade in the Company's credit rating to non-investment grade. Based on contracts in place and market prices at December 31, 2012, the aggregate fair value of all derivative instruments with credit-risk-related contingent features that were in a net liability position was $37 million (2011 – $110 million), for which the Company has provided collateral of nil (2011 – $28 million) in the normal course of business. If the credit-risk-related contingent features in these agreements were triggered on December 31, 2012, the Company would have been required to provide additional collateral of $37 million (2011 – $82 million) to its counterparties. Collateral may also need to be provided should the fair value of derivative instruments exceed pre-defined contractual exposure limit thresholds. The Company has sufficient liquidity in the form of cash and undrawn committed revolving bank lines to meet these contingent obligations should they arise.

Fair Value Hierarchy

The Company's financial assets and liabilities recorded at fair value have been categorized into three categories based on a fair value hierarchy.

In Level I, the fair value of assets and liabilities is determined by reference to quoted prices in active markets for identical assets and liabilities that the Company has the ability to access at the measurement date.

In Level II, the fair value of interest rate and foreign exchange derivative assets and liabilities is determined using the income approach. The fair value of power and natural gas commodity assets and liabilities is determined using the market approach. Under both approaches, valuation is based on the extrapolation of inputs, other than quoted prices included within Level I, for which all significant inputs are observable directly or indirectly. Such inputs include published exchange rates, interest rates, interest rate swap curves, yield curves, and broker quotes from external data service providers. Transfers between Level I and Level II would occur when there is a change in market circumstances. There were no transfers between Level I and Level II in 2012 or 2011.

In Level III, the fair value of assets and liabilities measured on a recurring basis is determined using a market approach based on inputs that are unobservable and significant to the overall fair value measurement. Assets and liabilities measured at fair value can fluctuate between Level II and Level III depending on the proportion of the value of the contract that extends beyond the time frame for which inputs are considered to be observable. As contracts near maturity and observable market data becomes available, they are transferred out of Level III and into Level II. There were no transfers out of Level II and into Level III in 2012 or 2011.

Long-dated commodity transactions in certain markets where liquidity is low are included in Level III of the fair value hierarchy, as the related commodity prices are not readily observable. Long-term electricity prices are estimated using a third-party modelling tool which takes into account physical operating characteristics of generation facilities in the markets in which the Company operates. Inputs into the model include market fundamentals such as fuel prices, power supply additions and retirements, power demand, seasonal hydro conditions and transmission constraints. Long-term North American natural gas prices are based on a view of future natural gas supply and demand, as well as exploration and development costs. Long-term prices are reviewed by management and the Board on a periodic basis. Significant decreases in fuel prices or demand for electricity or natural gas, or increases in the supply of electricity or natural gas would result in a lower fair value measurement of contracts included in Level III. The fair value of the Company's assets and liabilities measured on a recurring basis, including both current and non-current portions, are categorized as follows:

December 31 (millions of Canadian dollars,		Quoted Prices in Active Markets (Level I)				Significant Other Observable Inputs (Level II)				Significant Unobservable Inputs (Level III)				Total
pre-tax)		2012		2011		2012		2011		2012		2011		2012		2011
Derivative Instrument Assets:
	Interest rate contracts	–		–		24		35		–		–		24		35
	Foreign exchange contracts	–		–		119		142		–		–		119		142
	Power commodity contracts	–		–		213		201		2		–		215		201
	Gas commodity contracts	75		124		13		55		–		–		88		179
Derivative Instrument Liabilities:
	Interest rate contracts	–		–		(14	)	(23	)	–		–		(14	)	(23	)
	Foreign exchange contracts	–		–		(76	)	(102	)	–		–		(76	)	(102	)
	Power commodity contracts	–		–		(269	)	(454	)	(4	)	(15	)	(273	)	(469	)
	Gas commodity contracts	(95	)	(208	)	(11	)	(26	)	–		–		(106	)	(234	)
Non-Derivative Financial Instruments:
	Available-for-sale assets	44		23		–		–		–		–		44		23
		24		(61	)	(1	)	(172	)	(2	)	(15	)	21		(248	)

The following table presents the net change in the Level III fair value category:

(millions of Canadian dollars, pre-tax)	Derivatives1,2
Balance at December 31, 2010	(8	)
New contracts	1
Settlements	2
Transfers out of Level III	3
Total losses included in OCI	(13	)
Balance at December 31, 2011	(15	)
Settlements	(1	)
Transfers out of Level III	(21	)
Total gains included in Net Income	11
Total gains included in OCI	24
Balance at December 31, 2012	(2	)

1

The fair value of derivative assets and liabilities is presented on a net basis.

2

At December 31, 2012, there were unrealized gains included in Net Income attributable to derivatives that were still held at the reporting date of $1 million (2011 – nil).

A 10 per cent increase or decrease in commodity prices, with all other variables held constant, would result in a $4 million decrease or increase, respectively, in the fair value of outstanding derivative instruments included in Level III as at December 31, 2012.

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CONSOLIDATED STATEMENT OF ACCUMULATED OTHER COMPREHENSIVE LOSS (CAD) In Millions, unless otherwise specified													12 Months Ended
	Dec. 31, 2012 Currency Translation Adjustments	Dec. 31, 2011 Currency Translation Adjustments	Dec. 31, 2010 Currency Translation Adjustments	Dec. 31, 2009 Currency Translation Adjustments	Dec. 31, 2012 Cash Flow Hedges and Other	Dec. 31, 2011 Cash Flow Hedges and Other	Dec. 31, 2010 Cash Flow Hedges and Other	Dec. 31, 2009 Cash Flow Hedges and Other	Dec. 31, 2012 Pension and Other Post-retirement Plan Adjustments	Dec. 31, 2011 Pension and Other Post-retirement Plan Adjustments	Dec. 31, 2010 Pension and Other Post-retirement Plan Adjustments	Dec. 31, 2009 Pension and Other Post-retirement Plan Adjustments	Dec. 31, 2012 Parent		Dec. 31, 2011 Parent		Dec. 31, 2010 Parent		Dec. 31, 2012 Parent Currency Translation Adjustments		Dec. 31, 2011 Parent Currency Translation Adjustments		Dec. 31, 2010 Parent Currency Translation Adjustments		Dec. 31, 2012 Parent Cash Flow Hedges and Other		Dec. 31, 2011 Parent Cash Flow Hedges and Other		Dec. 31, 2010 Parent Cash Flow Hedges and Other		Dec. 31, 2012 Parent Pension and Other Post-retirement Plan Adjustments		Dec. 31, 2011 Parent Pension and Other Post-retirement Plan Adjustments		Dec. 31, 2010 Parent Pension and Other Post-retirement Plan Adjustments
Increase (decrease) in accumulated other comprehensive income (loss) net of tax
Balance at the beginning of the period	(707)	(643)	(683)	(592)	(110)	(281)	(194)	(40)	(631)	(525)	(366)	(240)
Foreign currency translation gains and losses on investments in foreign operations													(108)	[1]	113	[1]	(180)	[1]	(108)	[1]	113	[1]	(180)	[1]
Change in fair value of net investment hedges													44	[2]	(73)	[2]	89	[2]	44	[2]	(73)	[2]	89	[2]
Change in fair value of cash flow hedges													48	[3]	(213)	[3]	(165)	[3]							48	[3]	(213)	[3]	(165)	[3]
Reclassification to Net Income of gains and losses on cash flow hedges													138	[4],[5]	137	[4],[5]	43	[4],[5]							138	[4],[5]	137	[4],[5]	43	[4],[5]
Unrealized actuarial gains and losses on pension and other post-retirement benefit plans													(73)	[6]	(89)	[6]	(12)	[6]													(73)	[6]	(89)	[6]	(12)	[6]
Reclassification to Net Income of actuarial gains and losses and prior service costs on pension and other post-retirement benefit plans													22	[7]	10	[7]	5	[7]													22	[7]	10	[7]	5	[7]
Other Comprehensive Loss on equity investments													(70)	[8]	(91)	[8]	(151)	[8]							(15)	[8]	(11)	[8]	(32)	[8]	(55)	[8]	(80)	[8]	(119)	[8]
Balance at the end of the period	(707)	(643)	(683)	(592)	(110)	(281)	(194)	(40)	(631)	(525)	(366)	(240)

[1] (8) Net of income tax expense of $32 million and non-controlling interest losses of $21 million in 2012 (2011 - $29 million recovery, $24 million gain; 2010 - $65 million expense, $43 million loss).

[2] (9)Net of income tax expense of $15 million in 2012 (2011 - $28 million recovery; 2010 - $37 million expense).

[3] Net of income tax expense of $13 million and non-controlling interest gains of nil in 2012 (2011 - $106 million recovery, $1 million gain; 2010 - $82 million recovery, $4 million loss).

[4] Net of income tax expense of $81 million and non-controlling interest gains of nil in 2012 (2011 - $77 million expense, $10 million gain; 2010 - $28 million expense, $10 million gain).

[5] Losses related to cash flow hedges reported in AOCI and expected to be reclassified to Net Income in the next 12 months are estimated to be $41 million ($24 million, net of tax). These estimates assume constant commodity prices, interest rates and foreign exchange rates over time, however, the amounts reclassified will vary based on the actual value of these factors at the date of settlement.

[6] Net of income tax recovery of $31 million in 2012 (2011 - $30 million recovery; 2010 - $7 million recovery).

[7] Net of income tax expense of nil in 2012 (2011 - $3 million expense; 2010 - $3 million expense).

[8] Primarily related to reclassification to Net Income of actuarial losses on pension and other post-retirement benefit plans, reclassification to Net Income of gains and losses on cash flow hedges, offset by change in gains and losses on cash flow hedges, net of income tax recovery of $23 million in 2012 (2011 - $3 million recovery; 2010 - $69 million recovery).

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CHANGES IN OPERATING WORKING CAPITAL

12 Months Ended

Dec. 31, 2012

CHANGES IN OPERATING WORKING CAPITAL

CHANGES IN OPERATING WORKING CAPITAL

22.  CHANGES IN OPERATING WORKING CAPITAL

year ended December 31 (millions of Canadian dollars)	2012	2011		2010
Decrease/(increase) in accounts receivable	67	(15	)	(286	)
Decrease in inventories	27	3		25
Decrease/(increase) in other current assets	66	(27	)	(76	)
Increase in accounts payable and other	127	266		60
Increase/(decrease) in accrued interest	–	8		(8	)
Decrease/(Increase) in Operating Working Capital	287	235		(285	)

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EMPLOYEE POST-RETIREMENT BENEFITS (Details 3) (CAD) In Millions, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Employee post-retirement benefits
Fair value of plan assets	1,857	1,685
Percentage of Total Portfolio	100.00%	100.00%
Quoted Prices in Active Markets (Level I)
Employee post-retirement benefits
Fair value of plan assets	757	675
Significant Other Observable Inputs (Level II)
Employee post-retirement benefits
Fair value of plan assets	1,081	990
Significant Unobservable Inputs (Level III)
Employee post-retirement benefits
Fair value of plan assets	19	20
Cash and cash equivalents
Employee post-retirement benefits
Fair value of plan assets	17	25
Percentage of Total Portfolio	1.00%	1.00%
Cash and cash equivalents | Quoted Prices in Active Markets (Level I)
Employee post-retirement benefits
Fair value of plan assets	17	25
Equity Securities | Canadian
Employee post-retirement benefits
Fair value of plan assets	513	469
Percentage of Total Portfolio	28.00%	28.00%
Equity Securities | U.S.
Employee post-retirement benefits
Fair value of plan assets	347	306
Percentage of Total Portfolio	19.00%	18.00%
Equity Securities | International
Employee post-retirement benefits
Fair value of plan assets	294	256
Percentage of Total Portfolio	16.00%	15.00%
Equity Securities | Global
Employee post-retirement benefits
Fair value of plan assets	13
Equity Securities | Quoted Prices in Active Markets (Level I) | Canadian
Employee post-retirement benefits
Fair value of plan assets	400	374
Equity Securities | Quoted Prices in Active Markets (Level I) | U.S.
Employee post-retirement benefits
Fair value of plan assets	309	251
Equity Securities | Quoted Prices in Active Markets (Level I) | International
Employee post-retirement benefits
Fair value of plan assets	31	25
Equity Securities | Significant Other Observable Inputs (Level II) | Canadian
Employee post-retirement benefits
Fair value of plan assets	113	95
Equity Securities | Significant Other Observable Inputs (Level II) | U.S.
Employee post-retirement benefits
Fair value of plan assets	38	55
Equity Securities | Significant Other Observable Inputs (Level II) | International
Employee post-retirement benefits
Fair value of plan assets	263	231
Equity Securities | Significant Other Observable Inputs (Level II) | Global
Employee post-retirement benefits
Fair value of plan assets	13
Federal Bonds | Canadian
Employee post-retirement benefits
Fair value of plan assets	314	303
Percentage of Total Portfolio	17.00%	18.00%
Federal Bonds | Significant Other Observable Inputs (Level II) | Canadian
Employee post-retirement benefits
Fair value of plan assets	314	303
Provincial Bonds | Canadian
Employee post-retirement benefits
Fair value of plan assets	161	158
Percentage of Total Portfolio	9.00%	9.00%
Provincial Bonds | Significant Other Observable Inputs (Level II) | Canadian
Employee post-retirement benefits
Fair value of plan assets	161	158
Municipal Bonds | Canadian
Employee post-retirement benefits
Fair value of plan assets	5	4
Municipal Bonds | Significant Other Observable Inputs (Level II) | Canadian
Employee post-retirement benefits
Fair value of plan assets	5	4
State Bonds | U.S.
Employee post-retirement benefits
Fair value of plan assets	33	29
Percentage of Total Portfolio	2.00%	2.00%
State Bonds | Significant Other Observable Inputs (Level II) | U.S.
Employee post-retirement benefits
Fair value of plan assets	33	29
Corporate Bonds / Debt Securities | Canadian
Employee post-retirement benefits
Fair value of plan assets	65	47
Percentage of Total Portfolio	4.00%	3.00%
Corporate Bonds / Debt Securities | U.S.
Employee post-retirement benefits
Fair value of plan assets	45	29
Percentage of Total Portfolio	2.00%	2.00%
Corporate Bonds / Debt Securities | International
Employee post-retirement benefits
Fair value of plan assets	9	9
Percentage of Total Portfolio		1.00%
Corporate Bonds / Debt Securities | Significant Other Observable Inputs (Level II) | Canadian
Employee post-retirement benefits
Fair value of plan assets	65	47
Corporate Bonds / Debt Securities | Significant Other Observable Inputs (Level II) | U.S.
Employee post-retirement benefits
Fair value of plan assets	45	29
Corporate Bonds / Debt Securities | Significant Other Observable Inputs (Level II) | International
Employee post-retirement benefits
Fair value of plan assets	9	9
Mortgage Backed | International
Employee post-retirement benefits
Fair value of plan assets	22	30
Percentage of Total Portfolio	1.00%	2.00%
Mortgage Backed | Significant Other Observable Inputs (Level II) | International
Employee post-retirement benefits
Fair value of plan assets	22	30
Other Investments: Private Equity Funds
Employee post-retirement benefits
Fair value of plan assets	19	20
Percentage of Total Portfolio	1.00%	1.00%
Other Investments: Private Equity Funds | Significant Unobservable Inputs (Level III)
Employee post-retirement benefits
Fair value of plan assets	19	20	21

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GOODWILL (Tables)

12 Months Ended

Dec. 31, 2012

GOODWILL

Schedule of goodwill recorded on the entity's acquisitions in the U.S.

(millions of Canadian dollars)	Natural Gas Pipelines		Energy		Total
Balance at January 1, 2011	2,634		823		3,457
Foreign exchange rate changes	59		18		77
Balance at December 31, 2011	2,693		841		3,534
Foreign exchange rate changes	(58	)	(18	)	(76	)
Balance at December 31, 2012	2,635		823		3,458

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EMPLOYEE POST-RETIREMENT BENEFITS (Tables)

12 Months Ended

Dec. 31, 2012

Employee post-retirement benefits

Schedule of change in benefit obligations, change in plan assets, and funded status

at December 31	Pension Benefit Plans				Other Post-Retirement Benefit Plans
(millions of Canadian dollars)	2012		2011		2012		2011
Change in Benefit Obligation1
Benefit obligation – beginning of year	1,836		1,622		170		159
Service cost	66		54		2		2
Interest cost	94		91		8		9
Employee contributions	4		4		1		1
Benefits paid	(79	)	(71	)	(9	)	(9	)
Actuarial loss	227		131		16		7
Foreign exchange rate changes	(6	)	5		(2	)	1
Benefit obligation – end of year	2,142		1,836		186		170
Change in Plan Assets
Plan assets at fair value – beginning of year	1,656		1,636		29		29
Actual return on plan assets	165		21		4		–
Employer contributions	83		62		7		8
Employee contributions	4		4		1		1
Benefits paid	(79	)	(71	)	(9	)	(9	)
Foreign exchange rate changes	(4	)	4		–		–
Plan assets at fair value – end of year	1,825		1,656		32		29
Funded Status – Plan Deficit	(317	)	(180	)	(154	)	(141	)

1

The benefit obligation for the Company's pension benefit plan represents the projected benefit obligation. The benefit obligation for the Company's other post-retirement
benefit plans represents the accumulated post-retirement benefit obligation.

Schedule of amounts recognized in the Company's Balance Sheet for its DB plans and other post-retirement benefits plans

at December 31	Pension Benefit Plans				Other Post-Retirement Benefit Plans
(millions of Canadian dollars)	2012		2011		2012		2011
Intangible and Other Assets (Note 10)	–		–		11		–
Other Long-Term Liabilities (Note 13)	(317	)	(180	)	(165	)	(141	)
	(317	)	(180	)	(154	)	(141	)

Schedule of benefit obligations in excess of fair value of plan assets

at December 31	Pension Benefit Plans				Other Post-Retirement Benefit Plans
(millions of Canadian dollars)	2012		2011		2012		2011
Benefit obligation	(2,142	)	(1,836	)	(186	)	(170	)
Plan assets at fair value	1,825		1,656		32		29
Funded Status – Deficit	(317	)	(180	)	(154	)	(141	)

Schedule of accumulated benefit obligations in excess of fair value of plan assets for all DB Plans

at December 31 (millions of Canadian dollars)	2012		2011
Accumulated benefit obligation	(1,966	)	(1,691	)
Plan assets at fair value	1,825		1,656
Funded Status – Deficit	(141	)	(35	)

Schedule of accumulated benefit obligations in excess of fair value of plan assets for plans not fully funded

at December 31 (millions of Canadian dollars)	2012		2011
Accumulated benefit obligation	(1,966	)	(446	)
Plan assets at fair value	1,825		391
Funded Status – Deficit	(141	)	(55	)

Schedule of the Company's pension plans weighted average asset allocations and target allocations by asset category

	Percentage of Plan Assets		Target Allocations
at December 31	2012	2011	2012
Debt securities	36%	39%	35% to 60%
Equity securities	64%	61%	40% to 65%
	100%	100%

Schedule of plan assets for DB Plans and other post-retirement benefits measured at fair value, which have been categorized into three categories based on a fair value hierarchy

at December 31 (millions of			Quoted Prices in Active Markets (Level I)		Significant Other Observable Inputs (Level II)		Significant Unobservable Inputs (Level III)		Total		Percentage of Total Portfolio
Canadian dollars)			2012	2011	2012	2011	2012	2011	2012	2011	2012	2011
Asset Category
Cash and cash equivalents			17	25	–	–	–	–	17	25	1%	1%
Equity Securities:
	Canadian		400	374	113	95	–	–	513	469	28%	28%
	U.S.		309	251	38	55	–	–	347	306	19%	18%
	International		31	25	263	231	–	–	294	256	16%	15%
	Global		–	–	13	–	–	–	13	–	–	–
Fixed Income Securities:
	Canadian Bonds:
		Federal	–	–	314	303	–	–	314	303	17%	18%
		Provincial	–	–	161	158	–	–	161	158	9%	9%
		Municipal	–	–	5	4	–	–	5	4	–	–
		Corporate	–	–	65	47	–	–	65	47	4%	3%
	U.S. Bonds:
		State	–	–	33	29	–	–	33	29	2%	2%
		Corporate	–	–	45	29	–	–	45	29	2%	2%
	International:
		Corporate	–	–	9	9	–	–	9	9	–	1%
		Mortgage Backed	–	–	22	30	–	–	22	30	1%	2%
Other Investments:
	Private Equity Funds		–	–	–	–	19	20	19	20	1%	1%
			757	675	1,081	990	19	20	1,857	1,685	100%	100%

Schedule of the net change in the Level III fair value category

(millions of Canadian dollars, pre-tax)	Private Equity Funds
Balance at December 31, 2010	21
Realized and unrealized losses	(2	)
Purchases and sales	1
Balance at December 31, 2011	20
Realized and unrealized losses	(1	)
Balance at December 31, 2012	19

Schedule of estimated future benefit payments, which reflect expected future service

(millions of Canadian dollars)	Pension Benefits	Other Post- Retirement Benefits
2013	90	9
2014	96	9
2015	101	10
2016	107	10
2017	111	11
2018 to 2022	636	58

Schedule of significant weighted average actuarial assumptions adopted in measuring the Company's benefit obligations

	Pension Benefit Plans		Other Post-Retirement Benefit Plans
at December 31	2012	2011	2012	2011
Discount rate	4.35%	5.05%	4.35%	5.10%
Rate of compensation increase	3.15%	3.15%

Schedule of significant weighted average actuarial assumptions adopted in measuring the Company's net benefit plan costs

	Pension Benefit Plans			Other Post-Retirement Benefit Plans
year ended December 31	2012	2011	2010	2012	2011	2010
Discount rate	5.05%	5.55%	6.00%	5.10%	5.60%	6.00%
Expected long-term rate of return on plan assets	6.70%	6.95%	6.95%	6.40%	6.40%	7.80%
Rate of compensation increase	3.15%	3.10%	3.20%

Schedule of effects of a one per cent change in assumed health care cost trend rates

(millions of Canadian dollars)	Increase	Decrease
Effect on total of service and interest cost components	1	(1	)
Effect on post-retirement benefit obligation	17	(14	)

Schedule of the Company's net benefit cost

year ended December 31	Pension Benefit Plans						Other Post-Retirement Benefit Plans
(millions of Canadian dollars)	2012		2011		2010		2012		2011		2010
Service cost	66		54		50		2		2		2
Interest cost	94		91		89		8		9		9
Expected return on plan assets	(113	)	(114	)	(108	)	(2	)	(2	)	(2	)
Amortization of actuarial loss	18		10		5		1		1		1
Amortization of past service cost	2		2		2		1		–		–
Amortization of regulatory asset	19		12		5		1		1		1
Amortization of transitional obligation related to regulated business	–		–		–		2		2		2
Net Benefit Cost Recognized	86		55		43		13		13		13

Schedule of the pre-tax amounts recognized in AOCI

at December 31	2012		2011		2010
(millions of Canadian dollars)	Pension Benefits	Other Post- Retirement Benefits	Pension Benefits	Other Post- Retirement Benefits	Pension Benefits	Other Post- Retirement Benefits
Net loss	362	33	282	29	179	24
Prior service cost	5	2	7	2	9	2
	367	35	289	31	188	26

Schedule of the pre-tax amounts recognized in OCI

at December 31	2012				2011				2010
(millions of Canadian dollars)	Pension Benefits		Other Post- Retirement Benefits		Pension Benefits		Other Post- Retirement Benefits		Pension Benefits		Other Post- Retirement Benefits
Amortization of net loss from AOCI to OCI	(19	)	(1	)	(10	)	(1	)	(5	)	(1	)
Amortization of prior service costs from AOCI to OCI	(2	)	–		(2	)	–		(2	)	–
Funded status adjustment	99		5		113		6		15		4
	78		4		101		5		8		3

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INCOME TAXES (Details 2) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012 CAD	Dec. 31, 2011 CAD	Dec. 31, 2010 CAD	Dec. 31, 2012 Unremitted earnings of foreign investments CAD	Dec. 31, 2011 Unremitted earnings of foreign investments CAD	Dec. 31, 2012 Canada federal and provincial CAD	Dec. 31, 2011 Canada federal and provincial CAD	Dec. 31, 2012 U.S. federal USD ($)	Dec. 31, 2011 U.S. federal USD ($)
Net operating loss carryforwards
Unused net operating loss carryforwards						865	450	$ 2,174	$ 2,119
Deferred income tax liabilities on the unremitted earnings of foreign investments				144	136
Income tax payments, net of refunds	190	(84)	53

XML

CONSOLIDATED STATEMENT OF INCOME (CAD) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Revenues
Natural Gas Pipelines	4,264	4,244	4,122
Oil Pipelines	1,039	827
Energy	2,704	2,768	2,730
Total Revenues	8,007	7,839	6,852
Income from Equity Investments (Note 9)	257	415	453
Operating and Other Expenses
Plant operating costs and other	2,577	2,358	2,069
Commodity purchases resold	1,049	991	1,178
Property taxes	434	410	365
Depreciation and amortization	1,375	1,328	1,160
Valuation provision for MGP (Note 10)			146
Total Operating and Other Expenses	5,435	5,087	4,918
Financial Charges/ (Income)
Interest expense (Note 14)	976	937	701
Interest income and other	(85)	(55)	(94)
Total Financial Charges/(Income)	891	882	607
Income before Income Taxes	1,938	2,285	1,780
Income Tax Expense/ (Recovery) (Note 15)
Current	181	210	(139)
Deferred	285	365	526
Total Income Tax Expense/ (Recovery)	466	575	387
Net Income	1,472	1,710	1,393
Net Income Attributable to Non-Controlling Interests (Note 17)	118	129	115
Net Income Attributable to Controlling Interests	1,354	1,581	1,278
Preferred Share Dividends (Note 19)	55	55	45
Net Income Attributable to Common Shares	1,299	1,526	1,233
Net Income per Common Share (Note 18)
Basic (in dollars per share)	1.84	2.17	1.79
Diluted (in dollars per share)	1.84	2.17	1.78
Dividends Declared per Common Share (in dollars per share)	1.76	1.68	1.60
Weighted Average Number of Common Shares (millions)
Basic (in shares)	705	702	691
Diluted (in shares)	706	703	692

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ACCOUNTS PAYABLE AND OTHER (Tables)

12 Months Ended

Dec. 31, 2012

ACCOUNTS PAYABLE AND OTHER

Schedule of accounts payable and other

at December 31 (millions of Canadian dollars)	2012	2011
Trade payables	923	696
Fair value of derivative contracts (Note 21)	283	485
Dividends payable	320	305
Regulatory liabilities (Note 8)	100	139
Deferred income tax liabilities (Note 15)	–	81
Other	718	653
	2,344	2,359

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CHANGES IN OPERATING WORKING CAPITAL (Details) (CAD) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
CHANGES IN OPERATING WORKING CAPITAL
Decrease/(increase) in accounts receivable	67	(15)	(286)
Decrease in inventories	27	3	25
Decrease/(increase) in other current assets	66	(27)	(76)
Increase in accounts payable and other	127	266	60
Increase/ (decrease) in accrued interest		8	(8)
Decrease/(Increase) in Operating Working Capital	287	235	(285)

XML

CONSOLIDATED BALANCE SHEET (CAD) In Millions, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Current Assets
Cash and cash equivalents	551	654
Accounts receivable	1,052	1,094
Inventories	224	248
Other (Note 5)	997	1,114
Total Current Assets	2,824	3,110
Plant, Property and Equipment (Note 6)	33,713	32,467
Equity Investments (Note 9)	5,366	5,077
Goodwill (Note 7)	3,458	3,534
Regulatory Assets (Note 8)	1,629	1,684
Intangible and Other Assets (Note 10)	1,343	1,466
Total Assets	48,333	47,338
Current Liabilities
Notes payable (Note 11)	2,275	1,863
Accounts payable and other (Note 12)	2,344	2,359
Accrued interest	368	365
Current portion of long-term debt (Note 14)	894	935
Total Current Liabilities	5,881	5,522
Regulatory Liabilities (Note 8)	268	297
Other Long-Term Liabilities (Note 13)	882	929
Deferred Income Tax Liabilities (Note 15)	3,953	3,591
Long-Term Debt (Note 14)	18,019	17,724
Junior Subordinated Notes (Note 16)	994	1,016
Total Liabilities	29,997	29,079
EQUITY
Common shares, no par value (Note 18) Issued and outstanding: December 31, 2012 - 705 million shares December 31, 2011 - 704 million shares	12,069	12,011
Preferred shares (Note 19)	1,224	1,224
Additional paid-in capital	379	380
Retained earnings	4,687	4,628
Accumulated other comprehensive loss	(1,448)	(1,449)
Controlling interests	16,911	16,794
Non-controlling interests (Note 17)	1,425	1,465
Total Equity	18,336	18,259
Total Liabilities and Equity	48,333	47,338
Commitments, Contingencies and Guarantees (Note 24)

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RISK MANAGEMENT AND FINANCIAL INSTRUMENTS (Details 9) (Recurring basis, CAD) In Millions, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Quoted Prices in Active Markets (Level I)
Fair Value Hierarchy
Non-Derivative Financial Instruments: Available-for-sale assets	44	23
Assets and liabilities, net	24	(61)
Quoted Prices in Active Markets (Level I) | Commodity contract | Gas
Fair Value Hierarchy
Derivative assets	75	124
Derivative liabilities	(95)	(208)
Significant Other Observable Inputs (Level II)
Fair Value Hierarchy
Assets and liabilities, net	(1)	(172)
Significant Other Observable Inputs (Level II) | Interest rate contracts
Fair Value Hierarchy
Derivative assets	24	35
Derivative liabilities	(14)	(23)
Significant Other Observable Inputs (Level II) | Foreign exchange contracts
Fair Value Hierarchy
Derivative assets	119	142
Derivative liabilities	(76)	(102)
Significant Other Observable Inputs (Level II) | Commodity contract | Power
Fair Value Hierarchy
Derivative assets	213	201
Derivative liabilities	(269)	(454)
Significant Other Observable Inputs (Level II) | Commodity contract | Gas
Fair Value Hierarchy
Derivative assets	13	55
Derivative liabilities	(11)	(26)
Significant Unobservable Inputs (Level III)
Fair Value Hierarchy
Assets and liabilities, net	(2)	(15)
Significant Unobservable Inputs (Level III) | Commodity contract | Power
Fair Value Hierarchy
Derivative assets	2
Derivative liabilities	(4)	(15)
Total fair value
Fair Value Hierarchy
Non-Derivative Financial Instruments: Available-for-sale assets	44	23
Assets and liabilities, net	21	(248)
Total fair value | Interest rate contracts
Fair Value Hierarchy
Derivative assets	24	35
Derivative liabilities	(14)	(23)
Total fair value | Foreign exchange contracts
Fair Value Hierarchy
Derivative assets	119	142
Derivative liabilities	(76)	(102)
Total fair value | Commodity contract | Power
Fair Value Hierarchy
Derivative assets	215	201
Derivative liabilities	(273)	(469)
Total fair value | Commodity contract | Gas
Fair Value Hierarchy
Derivative assets	88	179
Derivative liabilities	(106)	(234)

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SEGMENTED INFORMATION (Details) (CAD) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Segmented information
Revenues	8,007	7,839	6,852
Income/(Loss) from Equity investments	257	415	453
Plant operating costs and other	(2,577)	(2,358)	(2,069)
Commodity purchases resold	(1,049)	(991)	(1,178)
Property taxes	(434)	(410)	(365)
Depreciation and amortization	(1,375)	(1,328)	(1,160)
Valuation provision			(146)
Operating income (loss)	2,829	3,167	2,387
Interest expense	(976)	(937)	(701)
Interest income and other	85	55	94
Income before Income Taxes	1,938	2,285	1,780
Income tax expense	(466)	(575)	(387)
Net Income	1,472	1,710	1,393
Net Income Attributable to Non-Controlling Interests	(118)	(129)	(115)
Net Income Attributable to Controlling Interests	1,354	1,581	1,278
Preferred Share Dividends	(55)	(55)	(45)
Net Income Attributable to Common Shares	1,299	1,526	1,233
TOTAL ASSETS
Total Assets	48,333	47,338
GEOGRAPHIC INFORMATION
Revenues	8,007	7,839	6,852
Plant, Property and Equipment	33,713	32,467
CAPITAL EXPENDITURES
Capital Expenditures	2,595	2,513	4,376
Canada
GEOGRAPHIC INFORMATION
Plant, Property and Equipment	18,054	17,552
Canada - domestic
Segmented information
Revenues	3,527	3,929	3,178
GEOGRAPHIC INFORMATION
Revenues	3,527	3,929	3,178
Canada - export
Segmented information
Revenues	1,121	1,087	838
GEOGRAPHIC INFORMATION
Revenues	1,121	1,087	838
United States
Segmented information
Revenues	3,252	2,752	2,796
GEOGRAPHIC INFORMATION
Revenues	3,252	2,752	2,796
Plant, Property and Equipment	14,904	14,388
Mexico
Segmented information
Revenues	107	71	40
GEOGRAPHIC INFORMATION
Revenues	107	71	40
Plant, Property and Equipment	755	527
Natural Gas Pipelines
Segmented information
Revenues	4,264	4,244	4,122
Income/(Loss) from Equity investments	157	159	153
Plant operating costs and other	(1,365)	(1,221)	(1,165)
Property taxes	(315)	(307)	(294)
Depreciation and amortization	(933)	(923)	(913)
Valuation provision			(146)
Operating income (loss)	1,808	1,952	1,757
TOTAL ASSETS
Total Assets	23,210	23,161
GEOGRAPHIC INFORMATION
Revenues	4,264	4,244	4,122
Plant, Property and Equipment	17,548	17,202
CAPITAL EXPENDITURES
Capital Expenditures	1,389	917	1,192
Oil Pipelines
Segmented information
Revenues	1,039	827
Plant operating costs and other	(296)	(209)
Property taxes	(45)	(31)
Depreciation and amortization	(145)	(130)
Operating income (loss)	553	457
TOTAL ASSETS
Total Assets	10,485	9,440
GEOGRAPHIC INFORMATION
Revenues	1,039	827
Plant, Property and Equipment	10,232	9,254
CAPITAL EXPENDITURES
Capital Expenditures	1,145	1,204	2,696
Energy
Segmented information
Revenues	2,704	2,768	2,730
Income/(Loss) from Equity investments	100	256	300
Plant operating costs and other	(819)	(842)	(805)
Commodity purchases resold	(1,049)	(991)	(1,178)
Property taxes	(74)	(72)	(71)
Depreciation and amortization	(283)	(261)	(247)
Operating income (loss)	579	858	729
TOTAL ASSETS
Total Assets	13,157	13,269
GEOGRAPHIC INFORMATION
Revenues	2,704	2,768	2,730
Plant, Property and Equipment	5,833	5,933
CAPITAL EXPENDITURES
Capital Expenditures	24	384	473
Corporate
Segmented information
Plant operating costs and other	(97)	(86)	(99)
Depreciation and amortization	(14)	(14)
Operating income (loss)	(111)	(100)	(99)
TOTAL ASSETS
Total Assets	1,481	1,468
GEOGRAPHIC INFORMATION
Plant, Property and Equipment	100	78
CAPITAL EXPENDITURES
Capital Expenditures	37	8	15

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COMMITMENTS, CONTINGENCIES AND GUARANTEES (Details 2) (CAD) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
ASTC Power Partnership
Equity interest
Ownership interest (as a percent)	50.00%
Alberta PPAs
Commitments under operating leases
Share of payments under PPAs	303	394	363
Sundance A
Commitments under operating leases
Power generating capacities under PPAs (in Megawatt)	560
Sundance B
Commitments under operating leases
Power generating capacities under PPAs (in Megawatt)	353
Sheerness
Commitments under operating leases
Power generating capacities under PPAs (in Megawatt)	756

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SUBSEQUENT EVENT

12 Months Ended

Dec. 31, 2012

SUBSEQUENT EVENT

SUBSEQUENT EVENT

25.  SUBSEQUENT EVENT

On January 15, 2013, TransCanada PipeLines Limited issued US$750 million of Senior Notes maturing January 15, 2016 and bearing interest at 0.75 per cent.

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EQUITY INVESTMENTS (Details) (CAD) In Millions, unless otherwise specified	12 Months Ended													12 Months Ended				12 Months Ended				12 Months Ended																														0 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2012 TC PipeLines, LP	Dec. 31, 2011 TC PipeLines, LP	May 03, 2011 TC PipeLines, LP	Dec. 31, 2010 TC PipeLines, LP	Dec. 31, 2012 Northern Border	Dec. 31, 2011 Northern Border	Dec. 31, 2012 Bruce Power	Dec. 31, 2011 Bruce Power	Dec. 31, 2012 ASTC Power Partnership	Dec. 31, 2011 CrossAlta Gas Storage & Services Ltd.	Dec. 31, 2012 Natural Gas Pipelines	Dec. 31, 2011 Natural Gas Pipelines	Dec. 31, 2010 Natural Gas Pipelines	Dec. 31, 2012 Natural Gas Pipelines TC PipeLines, LP	Dec. 31, 2012 Natural Gas Pipelines Northern Border	Dec. 31, 2011 Natural Gas Pipelines Northern Border	Dec. 31, 2010 Natural Gas Pipelines Northern Border	Dec. 31, 2012 Natural Gas Pipelines Northern Border TC PipeLines, LP	Dec. 31, 2012 Natural Gas Pipelines Iroquois	Dec. 31, 2011 Natural Gas Pipelines Iroquois	Dec. 31, 2010 Natural Gas Pipelines Iroquois	Dec. 31, 2012 Natural Gas Pipelines TQM	Dec. 31, 2011 Natural Gas Pipelines TQM	Dec. 31, 2010 Natural Gas Pipelines TQM	Dec. 31, 2012 Natural Gas Pipelines Other	Dec. 31, 2011 Natural Gas Pipelines Other	Dec. 31, 2010 Natural Gas Pipelines Other	Dec. 31, 2012 Energy	Dec. 31, 2011 Energy	Dec. 31, 2010 Energy	Dec. 31, 2012 Energy Other	Dec. 31, 2011 Energy Other	Dec. 31, 2010 Energy Other	Dec. 31, 2012 Energy Bruce A	Dec. 31, 2011 Energy Bruce A	Dec. 31, 2010 Energy Bruce A	Dec. 31, 2012 Energy Bruce B	Dec. 31, 2011 Energy Bruce B	Dec. 31, 2010 Energy Bruce B	Dec. 31, 2012 Energy ASTC Power Partnership	Dec. 31, 2011 Energy ASTC Power Partnership	Dec. 31, 2010 Energy ASTC Power Partnership	Dec. 31, 2012 Energy Portlands Energy	Dec. 31, 2011 Energy Portlands Energy	Dec. 31, 2010 Energy Portlands Energy	Dec. 31, 2012 Energy CrossAlta Gas Storage & Services Ltd.	Dec. 31, 2011 Energy CrossAlta Gas Storage & Services Ltd.	Dec. 31, 2010 Energy CrossAlta Gas Storage & Services Ltd.	Dec. 18, 2012 Energy CrossAlta Gas Storage & Services Ltd.
Equity Investments
Ownership interest (as a percent)												50.00%						16.70%	16.70%	19.10%	50.00%	44.50%			50.00%												48.90%			31.60%			50.00%			50.00%
Income/(Loss) from Equity investments	257	415	453											157	159	153		72	75	69		41	40	40	16	17	16	28	27	28	100	256	300	8	6	8	(149)	33	35	163	77	138	40	84	41	28	33	33	10	23	45
Equity Investments	5,366	5,077																511	545			174	181		80	82		60	72					56	132		4,033	3,561		69	115		42	58		341	313			18
TransCanada ownership (as a percent)				33.30%	33.30%	38.20%	38.20%										33.30%
Assets included in Property, Plant and Equipment, which are owned directly by the company through an undivided interest in the Crossfield joint venture													63
Percentage of interest acquired																																																				40.00%
Ownership interest after acquisition (as a percent)																																																				100.00%
Distributions received from equity investments	436	494	486
Returns of capital	60	101	40
Undistributed earnings	883	1,062	1,141
Difference between the carrying value of the investment and the underlying equity in the net assets								119	120	918	820
Income
Revenues	3,860	4,042	3,920
Operating and other expenses	(3,090)	(2,989)	(2,773)
Net income	717	929	1,009
Net income attributable to TransCanada	257	415	453											157	159	153		72	75	69		41	40	40	16	17	16	28	27	28	100	256	300	8	6	8	(149)	33	35	163	77	138	40	84	41	28	33	33	10	23	45
Balance Sheet
Current assets	1,593	1,430
Non current assets	12,154	11,550
Current liabilities	(1,187)	(1,172)
Non current liabilities	(3,787)	(3,232)
Ownership interest prior to acquisition (as a percent)																																																				60.00%

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ACCOUNTS PAYABLE AND OTHER

12 Months Ended

Dec. 31, 2012

ACCOUNTS PAYABLE AND OTHER

ACCOUNTS PAYABLE AND OTHER

12.  ACCOUNTS PAYABLE AND OTHER

at December 31 (millions of Canadian dollars)	2012	2011
Trade payables	923	696
Fair value of derivative contracts (Note 21)	283	485
Dividends payable	320	305
Regulatory liabilities (Note 8)	100	139
Deferred income tax liabilities (Note 15)	–	81
Other	718	653
	2,344	2,359

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ACCOUNTING POLICIES (Policies)

12 Months Ended

Dec. 31, 2012

ACCOUNTING POLICIES

Basis of Presentation

Basis of Presentation
The consolidated financial statements include the accounts of TransCanada and its subsidiaries. The Company consolidates its interest in entities over which it is able to exercise control. To the extent there are interests owned by other parties, these interests are included in Non-Controlling Interests. TransCanada uses the equity method of accounting for joint ventures in which the Company is able to exercise joint control and for investments in which the Company is able to exercise significant influence. TransCanada records its proportionate share of undivided interests in certain assets.

Use of Estimates and Judgements

Use of Estimates and Judgements
In preparing these financial statements, TransCanada is required to make estimates and assumptions that affect both the amount and timing of recording assets, liabilities, revenues and expenses since the determination of these items may be dependent on future events. The Company uses the most current information available and exercises careful judgement in making these estimates and assumptions. In the opinion of management, these consolidated financial statements have been properly prepared within reasonable limits of materiality and within the framework of the Company's significant accounting policies summarized below.

Regulation

Regulation
In Canada, regulated natural gas pipelines and oil pipelines are subject to the authority of the National Energy Board (NEB) of Canada. In the U.S., natural gas pipelines, oil pipelines and regulated storage assets are subject to the authority of the U.S. Federal Energy Regulatory Commission (FERC). In Mexico, natural gas pipelines are subject to the authority of the Energy Regulatory Commission of Mexico. The Company's Canadian and U.S. natural gas transmission operations are regulated with respect to construction, operations and the determination of tolls. Rate-regulated accounting (RRA) standards may impact the timing of the recognition of certain revenues and expenses in TransCanada's rate-regulated businesses which may differ from that otherwise expected in non-rate-regulated businesses to appropriately reflect the economic impact of the regulators' decisions regarding revenues and tolls. RRA is not applicable to the Keystone Pipeline System and the Company's Mexican natural gas pipelines and, as a result, the regulators' decisions regarding operations and tolls on these pipelines generally do not have an impact on timing of recognition of revenues and expenses.

Revenue Recognition

Revenue Recognition

Natural Gas and Oil Pipelines
Revenues from the Company's natural gas and oil pipelines, with the exception of Canadian natural gas pipelines which are subject to rate regulation, are generated from contractual arrangements for committed capacity and from the transportation of natural gas or oil. Revenues earned from firm contracted capacity arrangements are recognized ratably over the contract period regardless of the amount of natural gas or oil that is transported. Transportation revenues for interruptible or volumetric-based services are recognized when physical deliveries of natural gas or oil are made. The U.S. natural gas pipelines are subject to FERC regulations and, as a result, revenues collected may be subject to refund during a rate proceeding. Allowances for these potential refunds are recognized when appropriate.

Revenues from Canadian natural gas pipelines subject to rate regulation are recognized in accordance with decisions made by the NEB. The Company's Canadian natural gas pipeline rates are based on revenue requirements designed to recover the costs of providing natural gas transportation services, which include an appropriate return of and return on capital, as approved by the NEB. The Company's Canadian natural gas pipelines are not subject to risks related to variances in revenues and most costs. These variances are generally subject to deferral treatment and are recovered or refunded in future rates. The Company's Canadian natural gas pipelines are periodically subject to incentive mechanisms, as negotiated with shippers and approved by the NEB. These mechanisms can result in the Company recognizing more or less revenue than required to recover the costs that are subject to incentives. Revenues are recognized on firm contracted capacity ratably over the contract period. Revenues from interruptible or volumetric-based services are recorded when physical delivery is made. Revenues recognized prior to an NEB decision on rates for that period reflect the NEB's last approved rate of return on common equity (ROE) assumptions. Adjustments to revenue are recorded when the NEB decision is received.

Revenues from the Company's regulated natural gas storage services are recognized ratably over the contract period for firm committed capacity regardless of the amount of natural gas that is stored and when gas is injected or withdrawn for interruptible or volumetric-based services. The Company does not take ownership of the gas or oil that it transports or stores for others.

Energy

Power
Revenues from the Company's Energy business are primarily derived from the sale of electricity and from the sale of unutilized natural gas fuel, which are recorded at the time of delivery. Revenues also include capacity payments and ancillary services, as well as gains and losses resulting from the use of commodity derivative contracts. The accounting for derivative contracts is described in the Derivative Instruments and Hedging Activities section of this note.

Natural Gas Storage
Revenues earned from providing non-regulated natural gas storage services are recognized in accordance with the terms of the natural gas storage contracts, which is generally over the term of the contract. Revenues earned on the sale of proprietary natural gas are recorded in the month of delivery. Derivative contracts for the purchase or sale of natural gas are recorded at fair value with changes in fair value recorded in Revenues.

Cash and Cash Equivalents

Cash and Cash Equivalents
The Company's cash and cash equivalents consist of cash and highly liquid short-term investments with original maturities of three months or less and are recorded at cost, which approximates fair value.

Inventories

Inventories
Inventories primarily consist of materials and supplies, including spare parts and fuel, and natural gas inventory in storage, and are carried at the lower of weighted average cost or market.

Plant, Property and Equipment

Plant, Property and Equipment

Natural Gas Pipelines
Plant, property and equipment for natural gas pipelines are carried at cost. Depreciation is calculated on a straight-line basis once the assets are ready for their intended use. Pipeline and compression equipment are depreciated at annual rates ranging from one per cent to six per cent, and metering and other plant equipment are depreciated at various rates. The cost of overhauls of equipment is capitalized and depreciated over the estimated service lives of the overhauls. The cost of regulated natural gas pipelines includes an allowance for funds used during construction (AFUDC) consisting of a debt component and an equity component based on the rate of return on rate base approved by regulators. AFUDC is reflected as an increase in the cost of the assets in Plant, Property and Equipment and the equity component of AFUDC is a non-cash expenditure. Interest is capitalized during construction of non-regulated natural gas pipelines.

When regulated natural gas pipelines retire plant, property and equipment from service, the original book cost is removed from the gross plant amount and recorded as a reduction to accumulated depreciation. Costs incurred to remove a plant from service, net of any salvage proceeds, are also recorded in accumulated depreciation.

Oil Pipelines
Plant, property and equipment for oil pipelines are carried at cost. Depreciation is calculated on a straight-line basis once the assets are ready for their intended use. Pipeline and pumping equipment are depreciated at annual rates ranging from two per cent to 2.5 per cent, and other plant and equipment are depreciated at various rates. The cost of these assets includes interest capitalized during construction. When oil pipelines retire plant, property and equipment from service, the original book cost and related accumulated depreciation and amortization are derecognized and any gain or loss is recorded in earnings.

Energy
Power generation and natural gas storage plant, equipment and structures are recorded at cost and, once the assets are ready for their intended use, depreciated by major component on a straight-line basis over their estimated service lives at average annual rates ranging from two per cent to 20 per cent. Other equipment is depreciated at various rates. The cost of overhauls of equipment is capitalized and depreciated over the estimated service lives of the overhauls. Interest is capitalized on facilities under construction. When these assets are retired from plant, property and equipment from service, the original book cost and related accumulated depreciation and amortization are derecognized and any gain or loss is recorded in earnings.

Corporate
Corporate plant, property and equipment are recorded at cost and depreciated on a straight-line basis over their estimated useful lives at average annual rates ranging from three per cent to 20 per cent.

Impairment of Long-Lived Assets

Impairment of Long-Lived Assets
The Company reviews long-lived assets, such as plant, property and equipment, and intangible assets for impairment whenever events or changes in circumstances indicate the carrying value may not be recoverable. If the total of the estimated undiscounted future cash flows is less than the carrying value of the assets, an impairment loss is recognized for the excess of the carrying value over the fair value of the assets.

Acquisitions and Goodwill

Acquisitions and Goodwill
The Company accounts for business acquisitions using the acquisition method of accounting and, accordingly, the assets and liabilities of the acquired entities are primarily measured at their estimated fair value at the date of acquisition with limited exception. Goodwill is not amortized and is tested for impairment on an annual basis or more frequently if events or changes in circumstances indicate that the asset might be impaired. The annual review for goodwill impairment is performed at the reporting unit level which is one level below the Company's operating segments. The Company initially assesses qualitative factors to determine whether events or changes in circumstances indicate that the goodwill might be impaired. If TransCanada concludes that it is not more likely than not that fair value of the reporting unit is greater than its carrying value, the first step of the two-step impairment test is performed by comparing the fair value of the reporting unit to its book value, which includes goodwill. If the fair value is less than book value, an impairment is indicated and a second step is performed to measure the amount of the impairment. In the second step, the implied fair value of goodwill is calculated by deducting the recognized amounts of all tangible and intangible net assets of the reporting unit from the fair value determined in the initial assessment. If the carrying value of goodwill exceeds the calculated implied fair value of goodwill, an impairment charge is recorded in an amount equal to the difference.

Power Purchase Arrangements

Power Purchase Arrangements
A PPA is a long-term contract for the purchase or sale of power on a predetermined basis. The PPAs under which TransCanada buys power are accounted for as operating leases. The initial payments for these PPAs were recognized in Intangible and Other Assets and amortized on a straight-line basis over the term of the contracts, which expire in 2017 and 2020. A portion of these PPAs has been subleased to third parties under terms and conditions similar to the PPAs. The subleases are accounted for as operating leases and TransCanada records the margin earned from the subleases as a component of Revenues.

Income Taxes

Income Taxes
The Company uses the liability method of accounting for income taxes. This method requires the recognition of deferred income tax assets and liabilities for future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. Deferred income tax assets and liabilities are measured using enacted tax rates at the balance sheet date that are anticipated to apply to taxable income in the years in which temporary differences are expected to be reversed or settled. Changes to these balances are recognized in income in the period during which they occur except for changes in balances related to the Canadian Mainline, Alberta System and Foothills, which are deferred until they are refunded or recovered in tolls, as permitted by the NEB.

Canadian income taxes are not provided on the unremitted earnings of foreign investments that the Company does not intend to repatriate in the foreseeable future.

Asset Retirement Obligations

Asset Retirement Obligations
The Company recognizes the fair value of a liability for asset retirement obligations (ARO) in the period in which it is incurred, when a legal obligation exists and a reasonable estimate of fair value can be made. The fair value is added to the carrying amount of the associated asset and the liability is accreted through charges to operating expenses.

Recorded ARO relates to the non-regulated natural gas storage operations and certain power generation facilities. The scope and timing of asset retirements related to natural gas pipelines, oil pipelines and hydroelectric power plants is indeterminable. As a result, the Company has not recorded an amount for ARO related to these assets, with the exception of certain abandoned facilities.

Environmental Liabilities

Environmental Liabilities
The Company records liabilities on an undiscounted basis for environmental remediation efforts that are likely to occur and where the cost can be reasonably estimated. The estimates, including associated legal costs, are based on available information using existing technology and enacted laws and regulations. The estimates are subject to revision in future periods based on actual costs incurred or new circumstances. Amounts expected to be recovered from other parties, including insurers, are recorded as an asset separate from the associated liability.

Emission allowances or credits purchased for compliance are recorded on the Balance Sheet at historical cost and expensed when they are utilized. Compliance costs are expensed when incurred. Allowances granted to or internally generated by TransCanada are not attributed a value for accounting purposes. When required, TransCanada accrues emission liabilities on the Balance Sheet upon the generation or sale of power using the best estimate of the amount required to settle the obligation. Allowances and credits not used for compliance are sold and any gain or loss is recorded in Revenues.

Stock Options

Stock Options and Other Compensation Programs
TransCanada's Stock Option Plan permits options for the purchase of common shares to be awarded to certain employees, including officers. Stock options granted are recorded using the fair value method. Under this method, compensation expense is measured at the grant date based on the fair value as calculated using a binomial model and is recognized on a straight-line basis over the vesting period, with an offset to Additional Paid-In Capital. Upon exercise of stock options, amounts originally recorded against Additional Paid-In Capital are reclassified to Common Shares.

The Company has medium-term incentive plans, under which payments are made to eligible employees. The expense related to these incentive plans is accounted for on an accrual basis. Under these plans, benefits vest when certain conditions are met, including the employees' continued employment during a specified period and achievement of specified corporate performance targets.

Employee Post-Retirement Benefits

Employee Post-Retirement Benefits
The Company sponsors defined benefit pension plans (DB Plans), defined contribution plans (DC Plans), a Savings Plan and other post-retirement benefit plans. Contributions made by the Company to the DC Plans and Savings Plan are expensed in the period in which contributions are made. The cost of the DB Plans and other post-retirement benefits received by employees is actuarially determined using the projected benefit method pro-rated based on service and management's best estimate of expected plan investment performance, salary escalation, retirement age of employees and expected health care costs.

The DB Plans' assets are measured at fair value. The expected return on the DB Plans' assets is determined using market-related values based on a five-year moving average value for all of the DB Plans' assets. Past service costs are amortized over the expected average remaining service life of the employees. Adjustments arising from plan amendments are amortized on a straight-line basis over the average remaining service period of employees active at the date of amendment. The Company recognizes the overfunded or underfunded status of its DB Plans as an asset or liability, respectively, on its Balance Sheet and recognizes changes in that funded status through Other Comprehensive Income (OCI) in the year in which the change occurs. The excess of net actuarial gains or losses over 10 per cent of the greater of the benefit obligation and the market-related value of the DB Plans' assets, if any, is amortized out of Accumulated Other Comprehensive Loss (AOCI) over the average remaining service period of the active employees. When the restructuring of a benefit plan gives rise to both a curtailment and a settlement, the curtailment is accounted for prior to the settlement.

For certain regulated operations, post-retirement benefit amounts are recoverable through tolls as benefits are funded. The Company records any unrecognized gains or losses or changes in actuarial assumptions related to these post-retirement benefit plans as either regulatory assets or liabilities. The regulatory assets or liabilities are amortized on a straight-line basis over the average remaining service life of active employees.

Foreign Currency Transactions and Translation

Foreign Currency Transactions and Translation
Foreign currency transactions are those transactions whose terms are denominated in a currency other than the currency of the primary economic environment in which the company or reporting subsidiary operates, referred to as the functional currency. Transactions denominated in foreign currencies are translated into the functional currency using the exchange rate prevailing at the date of the transaction. Monetary assets and liabilities denominated in foreign currencies are translated to the functional currency using the rate of exchange in effect at the balance sheet date whereas non-monetary assets and liabilities are translated at the historical rate of exchange in effect on the date of the transaction. Exchange gains and losses resulting from translation of monetary assets and liabilities are recorded in income except for exchange gains and losses of the foreign currency debt related to Canadian regulated natural gas pipelines, which are deferred until they are refunded or recovered in tolls, as permitted by the NEB.

Gains and losses arising from translation of foreign operations' functional currencies to the Company's Canadian dollar reporting currency are reflected in OCI. Asset and liability accounts are translated at the period-end exchange rates while revenues, expenses, gains and losses are translated at the exchange rates in effect at the time of the transaction. The Company's U.S. dollar-denominated debt has been designated as a hedge of the net investment in foreign subsidiaries and, as a result, the unrealized foreign exchange gains and losses on the U.S. dollar denominated debt are also reflected in OCI. The amounts recognized previously in AOCI are reclassified to Net Income in the event the Company reduces its net investment in a foreign operation

Derivative Instruments and Hedging Activities

Derivative Instruments and Hedging Activities
All derivative instruments are recorded on the balance sheet at fair value, unless they qualify for and are designated under a normal purchase and normal sales exemption, or are considered to meet other permitted exemptions.

The Company applies hedge accounting to arrangements that qualify and are designated for hedge accounting treatment, which includes fair value and cash flow hedges, and hedges of foreign currency exposures of net investments in foreign operations. Hedge accounting is discontinued prospectively if the hedging relationship ceases to be effective or the hedging or hedged items cease to exist as a result of maturity, expiry, sale, termination, cancellation or exercise.

In a fair value hedging relationship, the carrying value of the hedged item is adjusted for changes in fair value attributable to the hedged risk and these changes are recognized in Net Income. Changes in the fair value of the hedged item, to the extent that the hedging relationship is effective, are offset by changes in the fair value of the hedging item, which are also recorded in Net Income. Changes in the fair value of foreign exchange and interest rate fair value hedges are recorded in Interest Income and Other and Interest Expense, respectively. If hedge accounting is discontinued, the carrying value of the hedged item is no longer adjusted and the cumulative fair value adjustments to the carrying value of the hedged item are amortized to Net Income over the remaining term of the original hedging relationship.

In a cash flow hedging relationship, the effective portion of the change in the fair value of the hedging derivative is initially recognized in OCI, while any ineffective portion is recognized in Net Income in the same financial statement category as the underlying transaction. When hedge accounting is discontinued, the amounts recognized previously in AOCI are reclassified to Revenues, Interest Expense and Interest Income and Other, as appropriate, during the periods when the variability in cash flows of the hedged item affects Net Income or as the original hedged item settles. Gains and losses on derivatives are reclassified immediately to Net Income from AOCI when the hedged item is sold or terminated early, or when it becomes probable that the anticipated transaction will not occur.

In hedging the foreign currency exposure of a net investment in a foreign operation, the effective portion of foreign exchange gains and losses on the hedging instruments is recognized in OCI and the ineffective portion is recognized in Net Income. The amounts recognized previously in AOCI are reclassified to Net Income in the event the Company reduces its net investment in a foreign operation.

In some cases, derivatives do not meet the specific criteria for hedge accounting treatment. In these instances, the changes in fair value are recorded in Net Income in the period of change.

The recognition of gains and losses on derivatives for Canadian natural gas regulated pipelines exposures is determined through the regulatory process. Gains and losses arising from changes in the fair value of derivatives accounted for as part of RRA, including those that qualify for hedge accounting treatment, can be recovered through the tolls charged by the Company. As a result, these gains and losses are deferred as Regulatory Assets or Regulatory Liabilities and are refunded to or collected from the ratepayers in subsequent years when the derivative settles.

Derivatives embedded in other financial instruments or contracts (host instrument) are recorded as separate derivatives. Embedded derivatives are measured at fair value if their economic characteristics are not clearly and closely related to those of the host instrument, their terms are the same as those of a stand-alone derivative and the total contract is not held for trading or accounted for at fair value. When changes in the fair value of embedded derivatives are measured separately, they are included in Net Income.

Long-Term Debt Transaction Costs

Long-Term Debt Transaction Costs
The Company records long-term debt transaction costs as other assets and amortizes these costs using the effective interest method for all costs except those related to the Canadian natural gas regulated pipelines, which continue to be amortized on a straight-line basis in accordance with the provisions of tolling mechanisms.

Guarantees

Guarantees
Upon issuance, the Company records the fair value of certain guarantees entered into by the Company or partially owned entities for which contingent payments may be made. The fair value of these guarantees is estimated by discounting the cash flows that would be incurred by the Company if letters of credit were used in place of the guarantees. Guarantees are recorded as an increase to Equity Investments, Plant, Property and Equipment, or a charge to Net Income, and a corresponding liability is recorded in Other Long-Term Liabilities.

XML

COMMITMENTS, CONTINGENCIES AND GUARANTEES (Details) (CAD) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Minimum Lease Payments
2013	82
2014	80
2015	80
2016	81
2017	80
2018 and thereafter	374
Total	777
Amounts Recoverable under Sub-leases
2013	(8)
2014	(8)
2015	(7)
2016	(4)
2017	(2)
2018 and thereafter	(1)
Total	(30)
Net Payments
2013	74
2014	72
2015	73
2016	77
2017	78
2018 and thereafter	373
Total	747
Rent Expense
Operating leases optional renewable terms, low end of range	P1Y
Operating leases optional renewable terms, high end of range	P10Y
Net rental expense on operating leases	84	79	80

XML

LONG-TERM DEBT

12 Months Ended

Dec. 31, 2012

LONG-TERM DEBT

LONG-TERM DEBT

14.  LONG-TERM DEBT

			2012		2011
Outstanding loan amounts (millions of Canadian dollars)		Maturity Dates	Outstanding December 31	Interest Rate1	Outstanding December 31	Interest Rate1
TRANSCANADA PIPELINES LIMITED
Debentures
	Canadian dollars	2014 to 2020	874	10.9%	874	10.9%
	U.S. dollars (2012 – US$400; 2011 – US$600)	2021	398	9.9%	610	9.5%
Medium-Term Notes
	Canadian dollars	2013 to 2041	4,549	5.9%	4,549	5.9%
Senior Unsecured Notes
	U.S. dollars (2012 – US$10,126; 2011 –  US$8,626)2	2013 to 2040	10,057	5.6%	8,759	6.2%
			15,878		14,792
NOVA GAS TRANSMISSION LTD.
Debentures and Notes
	Canadian dollars	2014 to 2024	382	11.5%	387	11.5%
	U.S. dollars (2012 – US$200; 2011 – US$375)	2023	199	7.9%	381	8.2%
Medium-Term Notes
	Canadian dollars	2025 to 2030	504	7.4%	504	7.4%
	U.S. dollars (2012 and 2011 – US$33)	2026	32	7.5%	33	7.5%
			1,117		1,305
TRANSCANADA PIPELINE USA LTD.
Bank Loan
	U.S. dollars (2012 – nil; 2011 – US$500)		–	–	509	0.6%
ANR PIPELINE COMPANY
Senior Unsecured Notes
	U.S. dollars (2012 and 2011 – US$432)	2021 to 2025	430	8.9%	438	8.9%
GAS TRANSMISSION NORTHWEST CORPORATION
Senior Unsecured Notes
	U.S. dollars (2012 and 2011 – US$325)	2015 to 2035	323	5.5%	331	5.5%
TC PIPELINES, LP
Unsecured Loan
	U.S. dollars (2012 – US$312; 2011 – US$363)	2017	310	1.5%	369	1.6%
Senior Unsecured Notes
	U.S. dollars (2012 and 2011 – US$350)	2021	348	4.7%	356	4.7%
			658		725
GREAT LAKES GAS TRANSMISSION LIMITED PARTNERSHIP
Senior Unsecured Notes
	U.S. dollars (2012 – US$354; 2011 – US$373)	2018 to 2030	352	7.8%	379	7.8%
TUSCARORA GAS TRANSMISSION COMPANY
Senior Secured Notes
	U.S. dollars (2012 – US$27; 2011 – US$30)	2017	27	4.0%	31	4.4%
PORTLAND NATURAL GAS TRANSMISSION SYSTEM
Senior Secured Notes3
	U.S. dollars (2012 – US$129; 2011 – US$147)	2018	128	6.1%	149	6.1%
			18,913		18,659
Less: Current Portion of Long-Term Debt			894		935
			18,019		17,724

1

Interest rates are the effective interest rates except for those pertaining to long-term debt issued for the Company's regulated operations, in which case the weighted average interest rate is presented as
approved by the regulators. Weighted average and effective interest rates are stated as at the respective outstanding dates.

2

Includes fair value adjustments of $10 million (2011 – $13 million) attributable to the hedged interest rate risk associated with interest rate swap fair value hedging relationships on US$350 million of debt at December 31, 2012 (2011 – US$350 million).

3

Secured by shipper transportation contracts, existing and new guarantees, letters of credit and collateral requirements.

Principal Repayments
Principal repayments on the long-term debt of the Company for the next five years are approximately as follows: 2013 – $894 million; 2014 – $970 million; 2015 – $1,561 million; 2016 – $1,214 million; and 2017 – $555 million.

TransCanada PipeLines Limited
In August 2012, TCPL issued US$1.0 billion of Senior Notes maturing August 1, 2022 and bearing interest at 2.5 per cent.

In May 2012, TCPL retired US$200 million of 8.625 per cent Senior Notes.

In March 2012, TCPL issued US$500 million of Senior Notes maturing March 2, 2015, and bearing interest at 0.875 per cent.

In November 2011, TCPL issued $500 million and $250 million of Medium-Term Notes maturing November 15, 2021 and November 15, 2041, respectively, and bearing interest at 3.65 per cent and 4.55 per cent, respectively.

In May 2011, TCPL retired $60 million of 9.5 per cent Medium-Term Notes.

In January 2011, TCPL retired $300 million of 4.3 per cent Medium-Term Notes.

In September 2010, TCPL issued US$1.0 billion of Senior Notes maturing October 1, 2020, and bearing interest at 3.80 per cent.

In June 2010, TCPL issued US$500 million and US$750 million of Senior Notes maturing on June 1, 2015 and June 1, 2040, respectively, and bearing interest at 3.4 per cent and 6.1 per cent, respectively.

In February 2010, TCPL retired US$120 million of 6.125 per cent Medium-Term Notes and in August 2010, TCPL retired $130 million of 10.50 per cent debentures.

NOVA Gas Transmission Ltd.
In December 2012, NOVA Gas Transmission Ltd. (NGTL) retired US$175 million of 8.5 per cent Debentures.

Debentures issued by NGTL in the amount of $225 million have retraction provisions that entitle the holders to require redemption of up to eight per cent of the then outstanding principal plus accrued and unpaid interest on specified repayment dates. No redemptions were made to December 31, 2012.

TransCanada PipeLine USA Ltd.
TCPL USA has an initial US$1.0 billion committed, unsecured, syndicated credit facility, guaranteed by TransCanada which was reduced to a US$300 million credit facility through term loan repayments of US$500 million and US$200 million in January 2012 and August 2011, respectively. The facility consists of a US$300 million revolving facility maturing in February 2013, described further in Note 11. The term loan's outstanding balance of US$500 million at December 31, 2011 was fully repaid in January 2012.

TC PipeLines, LP
In July 2011, TC PipeLines, LP increased its senior syndicated revolving credit facility to US$500 million and extended the maturity date to July 2016. In November 2012, the Senior Credit facility was further amended, extending the maturity date to November 2017.

In December 2011, TC PipeLines, LP repaid a maturing US$300 million term loan with a draw under this facility, and at December 31, 2012, US$312 million (2011 – US$363 million) was outstanding on the facility. In June 2011, TC PipeLines, LP issued US$350 million of 4.65 per cent Senior Notes due 2021. The proceeds from the issuance were used to partially repay TC PipeLines, LP's term loan and borrowings under its senior revolving credit facility, and repay its bridge loan facility described below.

In May 2011, TC PipeLines, LP made draws of US$61 million on a bridge loan facility and US$125 million on its senior revolving credit facility to partially fund the acquisition of a 25 per cent interest in each of Gas Transmission Northwest LLC (GTN LLC) and Bison Pipeline LLC (Bison LLC) as further described in Note 23.

Interest Expense

year ended December 31 (millions of Canadian dollars)	2012		2011		2010
Interest on long-term debt	1,190		1,154		1,149
Interest on junior subordinated notes	63		63		65
Interest on short-term debt	16		16		15
Capitalized interest	(300	)	(302	)	(587	)
Amortization and other financial charges1	7		6		59
	976		937		701

1

Amortization and other financial charges includes amortization of transaction costs and debt discounts calculated using the effective interest method and changes
in the fair value of derivatives used to manage the Company's exposure to rising interest rates.

The Company made interest payments of $966 million in 2012 (2011 – $926 million; 2010 – $652 million) on long-term debt and junior subordinated notes, net of interest capitalized on construction projects.

XML

ACCOUNTS PAYABLE AND OTHER (Details) (CAD) In Millions, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
ACCOUNTS PAYABLE AND OTHER
Trade payables	923	696
Fair value of derivative contracts	283	485
Dividends payable	320	305
Regulatory liabilities	100	139
Deferred income tax liabilities		81
Other	718	653
Total	2,344	2,359

XML

CONSOLIDATED BALANCE SHEET (Parenthetical) In Millions, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
CONSOLIDATED BALANCE SHEET
Common shares issued (in shares)	705	704
Common shares outstanding (in shares)	705	704

XML

CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME (CAD) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010
Net income	1,472		1,710		1,393
Other Comprehensive Income/ (Loss), Net of Income Taxes
Foreign currency translation gains and losses on investments in foreign operations	(129)	[1]	137	[1]	(223)	[1]
Change in fair value of net investment hedges	44	[2]	(73)	[2]	89	[2]
Change in fair value of cash flow hedges	48	[3]	(212)	[3]	(169)	[3]
Reclassification to Net Income of gains and losses on cash flow hedges	138	[4]	147	[4]	53	[4]
Unrealized actuarial gains and losses on pension and other post-retirement benefit plans	(73)	[5]	(89)	[5]	(12)	[5]
Reclassification to Net Income of actuarial gains and losses and prior service costs on pension and other post-retirement benefit plans	22	[6]	10	[6]	5	[6]
Other Comprehensive Loss on equity investments	(70)	[7]	(91)	[7]	(151)	[7]
Other Comprehensive Loss	(20)		(171)		(408)
Comprehensive Income	1,452		1,539		985
Comprehensive Income Attributable to Non-Controlling Interests	97		164		78
Comprehensive Income Attributable to Controlling Interests	1,355		1,375		907
Preferred Share Dividends	55		55		45
Comprehensive Income Attributable to Common Shares	1,300		1,320		862

[1] (1) Net of income tax expense of $32 million in 2012 (2011 - $29 million recovery; 2010 - $65 million expense).

[2] (2) Net of income tax expense of $15 million in 2012 (2011 - $28 million recovery; 2010 - $37 million expense).

[3] (3) Net of income tax expense of $13 million in 2012 (2011 - $106 million recovery; 2010 - $82 million recovery).

[4] (4) Net of income tax expense of $81 million in 2012 (2011 - $77 million expense; 2010 - $28 million expense).

[5] (5) Net of income tax recovery of $ 31 million in 2012 (2011 - $30 million recovery; 2010 - $7 million recovery).

[6] (6) Net of income tax expense of nil in 2012 (2011 - $3 million expense; 2010 - $3 million expense).

[7] (7) Primarily related to reclassification to Net Income of actuarial losses on pension and other post-retirement benefit plans, reclassification to Net Income of gains and losses on cash flow hedges, offset by change in gains and losses on cash flow hedges, net of income tax recovery of $23 million in 2012 (2011 - $3 million recovery; 2010 - $69 million recovery).

XML

GOODWILL

12 Months Ended

Dec. 31, 2012

GOODWILL

GOODWILL

7.  GOODWILL

The Company has recorded the following goodwill on its acquisitions in the U.S.:

(millions of Canadian dollars)	Natural Gas Pipelines		Energy		Total
Balance at January 1, 2011	2,634		823		3,457
Foreign exchange rate changes	59		18		77
Balance at December 31, 2011	2,693		841		3,534
Foreign exchange rate changes	(58	)	(18	)	(76	)
Balance at December 31, 2012	2,635		823		3,458

XML

RISK MANAGEMENT AND FINANCIAL INSTRUMENTS (Details 8) (CAD) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Credit Risk Related Contingent Features
Aggregate fair value of derivative instruments in a net liability position	37	110
Collateral for derivative instruments in a net liability position		28
Additional collateral required if credit-risk-related contingent features were triggered	37	82
Cash Flow Hedges | Commodity contract | Power
Components of OCI related to derivatives
Change in fair value of derivative instruments recognized in OCI (effective portion)	83	(263)
Reclassification of gains and losses on derivative instruments from AOCI to Net Income (effective portion)	147	81
Gains and losses on derivative instruments recognized in earnings (ineffective portion)	7
Cash Flow Hedges | Commodity contract | Gas
Components of OCI related to derivatives
Change in fair value of derivative instruments recognized in OCI (effective portion)	(21)	(59)
Reclassification of gains and losses on derivative instruments from AOCI to Net Income (effective portion)	54	100
Cash Flow Hedges | Foreign Exchange
Components of OCI related to derivatives
Change in fair value of derivative instruments recognized in OCI (effective portion)	(1)	5
Cash Flow Hedges | Interest
Components of OCI related to derivatives
Change in fair value of derivative instruments recognized in OCI (effective portion)		(1)
Reclassification of gains and losses on derivative instruments from AOCI to Net Income (effective portion)	18	43

XML

RISK MANAGEMENT AND FINANCIAL INSTRUMENTS (Details 6) In Millions, unless otherwise specified	12 Months Ended						12 Months Ended						12 Months Ended						12 Months Ended						12 Months Ended						12 Months Ended												12 Months Ended				12 Months Ended
	Dec. 31, 2012 Derivative Financial Instruments Held for Trading Commodity contract Power CAD	Dec. 31, 2011 Derivative Financial Instruments Held for Trading Commodity contract Power CAD	Dec. 31, 2012 Derivative Financial Instruments Held for Trading Commodity contract Power Purchases MWh	Dec. 31, 2011 Derivative Financial Instruments Held for Trading Commodity contract Power Purchases MWh	Dec. 31, 2012 Derivative Financial Instruments Held for Trading Commodity contract Power Sales MWh	Dec. 31, 2011 Derivative Financial Instruments Held for Trading Commodity contract Power Sales MWh	Dec. 31, 2012 Derivative Financial Instruments Held for Trading Commodity contract Gas CAD	Dec. 31, 2011 Derivative Financial Instruments Held for Trading Commodity contract Gas CAD	Dec. 31, 2012 Derivative Financial Instruments Held for Trading Commodity contract Gas Purchases MMcf	Dec. 31, 2011 Derivative Financial Instruments Held for Trading Commodity contract Gas Purchases MMcf	Dec. 31, 2012 Derivative Financial Instruments Held for Trading Commodity contract Gas Sales MMcf	Dec. 31, 2011 Derivative Financial Instruments Held for Trading Commodity contract Gas Sales MMcf	Dec. 31, 2012 Derivative Financial Instruments Held for Trading Foreign Exchange CAD	Dec. 31, 2011 Derivative Financial Instruments Held for Trading Foreign Exchange CAD	Dec. 31, 2011 Derivative Financial Instruments Held for Trading Foreign Exchange Cross-currency USD ($)	Dec. 31, 2011 Derivative Financial Instruments Held for Trading Foreign Exchange Cross-currency CAD	Dec. 31, 2012 Derivative Financial Instruments Held for Trading Foreign Exchange U.S. dollars USD ($)	Dec. 31, 2011 Derivative Financial Instruments Held for Trading Foreign Exchange U.S. dollars USD ($)	Dec. 31, 2011 Derivative Financial Instruments Held for Trading Interest CAD	Dec. 31, 2012 Derivative Financial Instruments Held for Trading Interest CAD	Dec. 31, 2012 Derivative Financial Instruments Held for Trading Interest Canadian dollars CAD	Dec. 31, 2011 Derivative Financial Instruments Held for Trading Interest Canadian dollars CAD	Dec. 31, 2012 Derivative Financial Instruments Held for Trading Interest U.S. dollars USD ($)	Dec. 31, 2011 Derivative Financial Instruments Held for Trading Interest U.S. dollars USD ($)	Dec. 31, 2012 Derivative Financial Instruments in Hedging Relationships Commodity contract Power CAD	Dec. 31, 2011 Derivative Financial Instruments in Hedging Relationships Commodity contract Power CAD	Dec. 31, 2012 Derivative Financial Instruments in Hedging Relationships Commodity contract Power Purchases MWh	Dec. 31, 2011 Derivative Financial Instruments in Hedging Relationships Commodity contract Power Purchases MWh	Dec. 31, 2012 Derivative Financial Instruments in Hedging Relationships Commodity contract Power Sales MWh	Dec. 31, 2011 Derivative Financial Instruments in Hedging Relationships Commodity contract Power Sales MWh	Dec. 31, 2012 Derivative Financial Instruments in Hedging Relationships Commodity contract Gas CAD	Dec. 31, 2011 Derivative Financial Instruments in Hedging Relationships Commodity contract Gas CAD	Dec. 31, 2012 Derivative Financial Instruments in Hedging Relationships Commodity contract Gas Purchases MMcf	Dec. 31, 2011 Derivative Financial Instruments in Hedging Relationships Commodity contract Gas Purchases MMcf	Dec. 31, 2012 Derivative Financial Instruments in Hedging Relationships Foreign Exchange CAD	Dec. 31, 2011 Derivative Financial Instruments in Hedging Relationships Foreign Exchange CAD	Dec. 31, 2012 Derivative Financial Instruments in Hedging Relationships Foreign Exchange Cross-currency USD ($)	Dec. 31, 2012 Derivative Financial Instruments in Hedging Relationships Foreign Exchange Cross-currency CAD	Dec. 31, 2011 Derivative Financial Instruments in Hedging Relationships Foreign Exchange Cross-currency USD ($)	Dec. 31, 2011 Derivative Financial Instruments in Hedging Relationships Foreign Exchange Cross-currency CAD	Dec. 31, 2012 Derivative Financial Instruments in Hedging Relationships Foreign Exchange U.S. dollars USD ($)	Dec. 31, 2011 Derivative Financial Instruments in Hedging Relationships Foreign Exchange U.S. dollars USD ($)	Dec. 31, 2012 Derivative Financial Instruments in Hedging Relationships Interest CAD	Dec. 31, 2011 Derivative Financial Instruments in Hedging Relationships Interest CAD	Dec. 31, 2012 Derivative Financial Instruments in Hedging Relationships Interest U.S. dollars USD ($)	Dec. 31, 2011 Derivative Financial Instruments in Hedging Relationships Interest U.S. dollars USD ($)	Dec. 31, 2012 Derivative Financial Instruments in Hedging Relationships Fair value hedges Interest CAD	Dec. 31, 2011 Derivative Financial Instruments in Hedging Relationships Fair value hedges Interest CAD	Dec. 31, 2012 Derivative Financial Instruments in Hedging Relationships Fair value hedges Interest USD ($)	Dec. 31, 2011 Derivative Financial Instruments in Hedging Relationships Fair value hedges Interest USD ($)
Fair Values
Fair Value - Assets	139	185					88	176					1	3					22	14					76	16						3											10	13			10	13
Fair Value - Liabilities	(176)	(192)					(104)	(212)					(2)	(14)					(22)	(14)					(97)	(277)					(2)	(22)			(38)	(38)								(1)
Notional Values
Volumes			31,135,000	21,905,000	31,066,000	21,334,000			83,000	103,000	65,000	82,000															15,184,000	17,188,000	7,200,000	8,061,000			1,000	8,000
Notional value															37	47	1,408	1,269			620	684	200	250													100	136	100	136	12	73			350	600			350	350
Net gains and losses
Net unrealized (losses)/gains in the year	(30)	(2)					2	(50)					(1)	(4)					1
Net realized gains/(losses) in the year	5	42					(10)	(74)					26	10					1
Net realized gains/(losses) in the year																									(130)	(165)					(23)	(17)											7	(16)			7	7

XML

Document and Entity Information	12 Months Ended
	Dec. 31, 2012
Document and Entity Information
Entity Registrant Name	TRANSCANADA CORP
Entity Central Index Key	0001232384
Document Type	40-F
Document Period End Date	Dec. 31, 2012
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding	705,461,386
Document Fiscal Year Focus	2012
Document Fiscal Period Focus	FY

XML

RATE-REGULATED BUSINESSES

12 Months Ended

Dec. 31, 2012

RATE-REGULATED BUSINESSES

RATE-REGULATED BUSINESSES

8.  RATE-REGULATED BUSINESSES

TransCanada's businesses that apply RRA currently include Canadian and U.S. natural gas pipelines and regulated U.S. natural gas storage. Regulatory assets and liabilities represent future revenues that are expected to be recovered from or refunded to customers based on decisions and approvals by the applicable regulatory authorities.

Canadian Regulated Operations
The Canadian Mainline, Alberta System, Foothills and TQM pipelines are regulated by the NEB under the National Energy Board Act (Canada). The NEB regulates the construction and operation of facilities, and the terms and conditions of services, including rates, for the Company's Canadian regulated natural gas transmission systems.

TransCanada's Canadian natural gas transmission services are supplied under natural gas transportation tariffs that provide for cost recovery, including return of and return on capital as approved by the NEB. Rates charged for these services are typically set through a process that involves filing an application with the regulator wherein forecasted operating costs, including a return of and on capital, determine the revenues for the upcoming year. To the extent that actual costs and revenues are more or less than the forecasted costs and revenues, the regulators generally allow the difference to be deferred to a future period and recovered or refunded in rates at that time. Differences between actual and forecasted costs that the regulator does not allow to be deferred are included in the determination of net income in the year they occur.

Canadian Mainline
In 2011, TransCanada filed a comprehensive application with the NEB to change the business structure and the terms and conditions of service for the Canadian Mainline, including addressing tolls for 2012 and 2013. The application included a 7.0 per cent after-tax weighted average cost of capital (ATWACC) fair return which is equivalent to an ROE of 12 per cent on a deemed common equity of 40 per cent. This application is currently under review by the NEB with a decision not expected before late first quarter 2013 and accordingly, any adjustments relating to 2012 results will be recorded when the decision is received. In the absence of a decision by the NEB, Canadian Mainline's 2012 results reflect the last approved ROE of 8.08 per cent on a deemed common equity of 40 per cent and exclude incentive earnings.

The Canadian Mainline operated under a five-year settlement, effective from January 1, 2007 to December 31, 2011. The Canadian Mainline's cost of capital for establishing tolls under the settlement reflected an ROE as determined by the NEB's RH-2-94 ROE formula on a deemed common equity of 40 per cent. The allowed ROE in 2011 for the Canadian Mainline was 8.08 per cent. The balance of the capital structure was comprised of short and long-term debt.

The settlement also established the Canadian Mainline's fixed operating, maintenance and administration (OM&A) costs for each of the five years. Variances in OM&A costs were shared equally between TransCanada and its customers in 2011. All other cost elements of the revenue requirement were treated on a flow-through basis. The settlement also allowed for performance-based incentive arrangements.

In September 2011, the NEB approved the Canadian Mainline's interim tolls as final for 2011, including TransCanada's proposal to carry forward any revenue variances into the determination of 2012 tolls. However, the NEB determined that TransCanada's inclusion of certain elements in the proposed 2011 revenue requirement, which were derived in accordance with the 2007-2011 Settlement, would be examined with TransCanada's 2012-2013 Tolls Application before a final decision was rendered on the 2011 revenue requirement. Any adjustments relating to the 2011 revenue requirement will be recorded when the NEB decision is received.

Alberta System
In September 2010, the NEB approved the Alberta System's 2010-2012 Revenue Requirement Settlement Application. The settlement provided for a 9.70 per cent ROE on a deemed common equity of 40 per cent and fixed certain annual OM&A costs during the term. Any variances between actual costs and those agreed to in the settlement accrued to TransCanada. All other costs were treated on a flow-through basis.

Foothills
In June 2010, TransCanada reached an agreement to establish a cost of capital for Foothills that reflected a 9.70 per cent ROE on a deemed common equity of 40 per cent for 2010 to 2012. A component of OM&A was fixed, subject to the terms of the B.C. System/Foothills Integration Settlement, and variances between actual and fixed amounts were shared with customers up to and including June 2011 when the OM&A savings cap was reached.

TQM
In November 2010, the NEB approved TQM's multi-year settlement with its interested parties regarding its annual revenue requirements for 2010 to 2012. As part of the settlement, the annual revenue requirement was comprised of fixed and flow-through components. The fixed component included certain OM&A costs, return on rate base, depreciation and municipal taxes. Any variances between actual costs and those included in the fixed component accrued to TQM.

U.S. Regulated Operations
TransCanada's U.S. natural gas pipelines are "natural gas companies" operating under the provisions of the Natural Gas Act of 1938, the Natural Gas Policy Act of 1978 (NGA) and the Energy Policy Act of 2005, and are subject to the jurisdiction of the FERC. The NGA grants the FERC authority over the construction and operation of pipelines and related facilities. The FERC also has authority to regulate rates for natural gas transportation in interstate commerce. The Company's significant regulated U.S. natural gas pipelines are described below.

ANR
ANR's natural gas transportation and storage services are provided for under tariffs regulated by the FERC. These tariffs include maximum and minimum rates for services and allow ANR to discount or negotiate rates on a non-discriminatory basis. ANR Pipeline Company rates were established pursuant to a settlement approved by the FERC that was effective beginning in 1997. ANR Pipeline Company is not required to conduct a review of currently effective rates with the FERC at any time in the future but is not prohibited from filing for new rates if necessary. ANR Storage Company, which is another FERC regulated entity that owns and operates storage fields in Michigan, has rates that were established pursuant to a settlement approved by the FERC in August 2012. ANR Storage Company is required to file a NGA Section 4 general rate case no later than July 1, 2016.

In 2011, ANR Pipeline Company filed an application with the FERC to sell its offshore Gulf of Mexico assets and certain related onshore facilities to its wholly owned subsidiary, TC Offshore LLC. At the same time, TC Offshore LLC requested authorization from the FERC to acquire, own and operate those facilities under FERC regulation. The requests were granted and TC Offshore LLC began operating under FERC approved tariff rates on November 1, 2012. TC Offshore LLC is required to file a cost and revenue study to justify its existing approved cost-based rates after its first three years of operation.

GTN
GTN is regulated by the FERC and operates in accordance with a FERC-approved tariff that establishes maximum and minimum rates for various services. GTN is permitted to discount or negotiate these rates on a non-discriminatory basis. GTN's rates were established pursuant to a settlement approved by the FERC in January 2012. That settlement provided for a four year moratorium during which GTN and the settling parties are prohibited from taking certain actions under the NGA, including filings to adjust rates. GTN is required to file for new rates to be effective January 1, 2016.

Great Lakes
Great Lakes is regulated by the FERC and operates in accordance with a FERC-approved tariff that establishes maximum and minimum rates for its various services and permits Great Lakes to discount or negotiate rates on a non-discriminatory basis. Great Lakes rates were established pursuant to a settlement approved by the FERC in July 2010. Great Lakes is required to file a NGA Section 4 general rate case no later than November 1, 2013.

Bison
Bison is regulated by the FERC and operates in accordance with a FERC-approved tariff that establishes maximum and minimum rates for various services. Bison is permitted to discount or negotiate these rates on a non-discriminatory basis. Bison's rates were established pursuant to its initial certificate to construct and operate the pipeline that initiated service in January 2011.

Regulatory Assets and Liabilities

at December 31 (millions of Canadian dollars)	2012	2011	Remaining Recovery/ Settlement Period (years)
Regulatory Assets
Deferred income taxes1	1,122	1,178	n/a
Operating and debt-service regulatory assets2	171	172	1
Adjustment account3	80	82	30
Other4	434	430	n/a
	1,807	1,862
Less: Current portion included in Other Current Assets	178	178
	1,629	1,684
Regulatory Liabilities
Foreign exchange on long-term debt5	150	184	1-17
Operating and debt-service regulatory liabilities2	84	135	1
Other4	134	117	n/a
	368	436
Less: Current portion included in Accounts Payable	100	139
	268	297

1

These regulatory assets are underpinned by non-cash transactions or are recovered without an allowance for return as approved by the regulator. Accordingly, these regulatory
assets are not included in rate base and do not yield a return on investment during the recovery period.

2

Operating and debt-service regulatory assets and liabilities represent the accumulation of cost and revenue variances approved by the regulatory authority for inclusion in
determining tolls for the following calendar year. Pre-tax operating results in 2012 would have been $50 million lower (2011 – $102 million higher) had these amounts not been recorded
as regulatory assets and liabilities.

3

A regulatory adjustment account of $85 million was established and agreed upon by Canadian Mainline stakeholders to reduce tolls in 2010. Amortization of the adjustment account
commenced in 2011 at the composite depreciation rate.

4

Pre-tax operating results in 2012 would have been $97 million higher (2011 – $106 million lower) had these amounts not been recorded as regulatory assets and liabilities.

5

Foreign exchange on long-term debt of the Canadian Mainline, Alberta System and Foothills represents the variance resulting from revaluing foreign currency-denominated
debt instruments to the current foreign exchange rate from the historical foreign exchange rate at the time of issue. Foreign exchange gains and losses realized
when foreign debt matures or is redeemed early are expected to be recovered or refunded through the determination of future tolls. In the absence of RRA, U.S. GAAP would have
required the inclusion of these unrealized gains or losses in Net Income.

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PREFERRED SHARES (Details) (CAD) In Millions, except Share data in Thousands, unless otherwise specified			12 Months Ended				1 Months Ended	12 Months Ended				1 Months Ended	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012 Series 1	Dec. 31, 2011 Series 1	Dec. 31, 2010 Series 1	Dec. 31, 2012 Series 2	Mar. 31, 2010 Series 3	Dec. 31, 2012 Series 3	Dec. 31, 2011 Series 3	Dec. 31, 2010 Series 3	Dec. 31, 2012 Series 4	Jun. 30, 2010 Series 5	Dec. 31, 2012 Series 5	Dec. 31, 2011 Series 5	Dec. 31, 2010 Series 5	Dec. 31, 2012 Series 6
Preferred Shares
Preferred shares, authorized			22,000	22,000				14,000	14,000				14,000	14,000
Preferred shares, outstanding			22,000	22,000				14,000	14,000				14,000	14,000
Dividend Rate per Share (in Canadian dollars per share)			1.15	1.15				1.00	1.00				1.10	1.10
Redemption Price per Share (in Canadian dollars per share)			25.00	25.00				25.00	25.00				25.00	25.00
Preferred shares	1,224	1,224	539	539				343	343				342	342
Initial period of fixed cumulative quarterly dividend payment							5 years					5 years 6 months
Dividend rate reset period			5 years					5 years					5 years
Period of Government of Canada bond or treasury bill considered for calculation of dividend yield per annum			5 years			90 days		5 years			90 days		5 years			90 days
Fixed percentage added to government of Canada bond or treasury bill rate, for calculating dividend yield per annum			1.92%			1.92%		1.28%			1.28%		1.54%			1.54%
Period of subsequent interval for redemption of preferred stock			5 years					5 years					5 years
Period of subsequent interval for conversion of preferred stock			5 years					5 years					5 years
Cash Dividends
Cash dividends paid			25	25	24			14	14	11			16	16	9
Cash dividends paid (in Canadian dollars per share)			1.15	1.15	1.15			1.00	1.00	0.8041			1.10	1.10	0.3707

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RISK MANAGEMENT AND FINANCIAL INSTRUMENTS (Details 5) (CAD) In Millions, unless otherwise specified	Dec. 31, 2012
Notes payable
Remaining contractual maturities, non-derivative financial liabilities - principal and interest
Total contractual repayments / interest payments of financial liabilities	2,275
Payments Due by 2013	2,275
Long-term debt
Remaining contractual maturities, non-derivative financial liabilities - principal and interest
Total contractual repayments / interest payments of financial liabilities	18,913
Payments Due by 2013	894
Payments Due by 2014 and 2015	2,531
Payments Due by 2016 and 2017	1,769
2018 and Thereafter	13,719
Long-term debt | Interest payments
Remaining contractual maturities, non-derivative financial liabilities - principal and interest
Total contractual repayments / interest payments of financial liabilities	15,377
Payments Due by 2013	1,154
Payments Due by 2014 and 2015	2,125
Payments Due by 2016 and 2017	1,908
2018 and Thereafter	10,190
Junior subordinated notes
Remaining contractual maturities, non-derivative financial liabilities - principal and interest
Total contractual repayments / interest payments of financial liabilities	994
2018 and Thereafter	994
Junior subordinated notes | Interest payments
Remaining contractual maturities, non-derivative financial liabilities - principal and interest
Total contractual repayments / interest payments of financial liabilities	3,443
Payments Due by 2013	63
Payments Due by 2014 and 2015	126
Payments Due by 2016 and 2017	126
2018 and Thereafter	3,128
Debt
Remaining contractual maturities, non-derivative financial liabilities - principal and interest
Total contractual repayments / interest payments of financial liabilities	22,182
Payments Due by 2013	3,169
Payments Due by 2014 and 2015	2,531
Payments Due by 2016 and 2017	1,769
2018 and Thereafter	14,713
Total long-term debt and junior subordinated notes | Interest payments
Remaining contractual maturities, non-derivative financial liabilities - principal and interest
Total contractual repayments / interest payments of financial liabilities	18,820
Payments Due by 2013	1,217
Payments Due by 2014 and 2015	2,251
Payments Due by 2016 and 2017	2,034
2018 and Thereafter	13,318

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CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME (Parenthetical) (CAD) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Other Comprehensive Income/ (Loss), income tax recovery (expense)
Foreign currency translation gains and losses on investments in foreign operations, income tax expense (recovery)	32	(29)	65
Change in fair value of net investment hedges, income tax expense (recovery)	15	(28)	37
Change in fair value of cash flow hedges, income tax expense (recovery)	13	(106)	(82)
Reclassification to Net Income of gains and losses on cash flow hedges, income tax expense	81	77	28
Unrealized actuarial gains and losses on pension and other post-retirement benefit plans, income tax recovery	(31)	(30)	(7)
Reclassification to Net Income of actuarial gains and losses and prior service costs on pension and other post-retirement benefit plans, income tax expense		3	3
Other Comprehensive Loss on equity investments, income tax recovery	(23)	(3)	(69)

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ACCOUNTING POLICIES

12 Months Ended

Dec. 31, 2012

ACCOUNTING POLICIES

ACCOUNTING POLICIES

2.  ACCOUNTING POLICIES

The Company's consolidated financial statements have been prepared by management in accordance with United States generally accepted accounting principles (U.S. GAAP). Amounts are stated in Canadian dollars unless otherwise indicated. Comparative figures, which were previously presented in accordance with Canadian generally accepted accounting principles as defined in Part V of the Canadian Institute of Chartered Accountants Handbook, have been adjusted as necessary to be compliant with the Company's policies under U.S. GAAP. The amounts adjusted at December 31, 2011 and December 31, 2010 in these consolidated financial statements are the same as those reported in Note 25 of TransCanada's 2011 audited Consolidated Financial Statements included in TransCanada's 2011 Annual Report.

Basis of Presentation
The consolidated financial statements include the accounts of TransCanada and its subsidiaries. The Company consolidates its interest in entities over which it is able to exercise control. To the extent there are interests owned by other parties, these interests are included in Non-Controlling Interests. TransCanada uses the equity method of accounting for joint ventures in which the Company is able to exercise joint control and for investments in which the Company is able to exercise significant influence. TransCanada records its proportionate share of undivided interests in certain assets.

Use of Estimates and Judgements
In preparing these financial statements, TransCanada is required to make estimates and assumptions that affect both the amount and timing of recording assets, liabilities, revenues and expenses since the determination of these items may be dependent on future events. The Company uses the most current information available and exercises careful judgement in making these estimates and assumptions. In the opinion of management, these consolidated financial statements have been properly prepared within reasonable limits of materiality and within the framework of the Company's significant accounting policies summarized below.

Regulation
In Canada, regulated natural gas pipelines and oil pipelines are subject to the authority of the National Energy Board (NEB) of Canada. In the U.S., natural gas pipelines, oil pipelines and regulated storage assets are subject to the authority of the U.S. Federal Energy Regulatory Commission (FERC). In Mexico, natural gas pipelines are subject to the authority of the Energy Regulatory Commission of Mexico. The Company's Canadian and U.S. natural gas transmission operations are regulated with respect to construction, operations and the determination of tolls. Rate-regulated accounting (RRA) standards may impact the timing of the recognition of certain revenues and expenses in TransCanada's rate-regulated businesses which may differ from that otherwise expected in non-rate-regulated businesses to appropriately reflect the economic impact of the regulators' decisions regarding revenues and tolls. RRA is not applicable to the Keystone Pipeline System and the Company's Mexican natural gas pipelines and, as a result, the regulators' decisions regarding operations and tolls on these pipelines generally do not have an impact on timing of recognition of revenues and expenses.

Revenue Recognition

Natural Gas and Oil Pipelines
Revenues from the Company's natural gas and oil pipelines, with the exception of Canadian natural gas pipelines which are subject to rate regulation, are generated from contractual arrangements for committed capacity and from the transportation of natural gas or oil. Revenues earned from firm contracted capacity arrangements are recognized ratably over the contract period regardless of the amount of natural gas or oil that is transported. Transportation revenues for interruptible or volumetric-based services are recognized when physical deliveries of natural gas or oil are made. The U.S. natural gas pipelines are subject to FERC regulations and, as a result, revenues collected may be subject to refund during a rate proceeding. Allowances for these potential refunds are recognized when appropriate.

Revenues from Canadian natural gas pipelines subject to rate regulation are recognized in accordance with decisions made by the NEB. The Company's Canadian natural gas pipeline rates are based on revenue requirements designed to recover the costs of providing natural gas transportation services, which include an appropriate return of and return on capital, as approved by the NEB. The Company's Canadian natural gas pipelines are not subject to risks related to variances in revenues and most costs. These variances are generally subject to deferral treatment and are recovered or refunded in future rates. The Company's Canadian natural gas pipelines are periodically subject to incentive mechanisms, as negotiated with shippers and approved by the NEB. These mechanisms can result in the Company recognizing more or less revenue than required to recover the costs that are subject to incentives. Revenues are recognized on firm contracted capacity ratably over the contract period. Revenues from interruptible or volumetric-based services are recorded when physical delivery is made. Revenues recognized prior to an NEB decision on rates for that period reflect the NEB's last approved rate of return on common equity (ROE) assumptions. Adjustments to revenue are recorded when the NEB decision is received.

Revenues from the Company's regulated natural gas storage services are recognized ratably over the contract period for firm committed capacity regardless of the amount of natural gas that is stored and when gas is injected or withdrawn for interruptible or volumetric-based services. The Company does not take ownership of the gas or oil that it transports or stores for others.

Energy

Power
Revenues from the Company's Energy business are primarily derived from the sale of electricity and from the sale of unutilized natural gas fuel, which are recorded at the time of delivery. Revenues also include capacity payments and ancillary services, as well as gains and losses resulting from the use of commodity derivative contracts. The accounting for derivative contracts is described in the Derivative Instruments and Hedging Activities section of this note.

Natural Gas Storage
Revenues earned from providing non-regulated natural gas storage services are recognized in accordance with the terms of the natural gas storage contracts, which is generally over the term of the contract. Revenues earned on the sale of proprietary natural gas are recorded in the month of delivery. Derivative contracts for the purchase or sale of natural gas are recorded at fair value with changes in fair value recorded in Revenues.

Cash and Cash Equivalents
The Company's cash and cash equivalents consist of cash and highly liquid short-term investments with original maturities of three months or less and are recorded at cost, which approximates fair value.

Inventories
Inventories primarily consist of materials and supplies, including spare parts and fuel, and natural gas inventory in storage, and are carried at the lower of weighted average cost or market.

Plant, Property and Equipment

Natural Gas Pipelines
Plant, property and equipment for natural gas pipelines are carried at cost. Depreciation is calculated on a straight-line basis once the assets are ready for their intended use. Pipeline and compression equipment are depreciated at annual rates ranging from one per cent to six per cent, and metering and other plant equipment are depreciated at various rates. The cost of overhauls of equipment is capitalized and depreciated over the estimated service lives of the overhauls. The cost of regulated natural gas pipelines includes an allowance for funds used during construction (AFUDC) consisting of a debt component and an equity component based on the rate of return on rate base approved by regulators. AFUDC is reflected as an increase in the cost of the assets in Plant, Property and Equipment and the equity component of AFUDC is a non-cash expenditure. Interest is capitalized during construction of non-regulated natural gas pipelines.

When regulated natural gas pipelines retire plant, property and equipment from service, the original book cost is removed from the gross plant amount and recorded as a reduction to accumulated depreciation. Costs incurred to remove a plant from service, net of any salvage proceeds, are also recorded in accumulated depreciation.

Oil Pipelines
Plant, property and equipment for oil pipelines are carried at cost. Depreciation is calculated on a straight-line basis once the assets are ready for their intended use. Pipeline and pumping equipment are depreciated at annual rates ranging from two per cent to 2.5 per cent, and other plant and equipment are depreciated at various rates. The cost of these assets includes interest capitalized during construction. When oil pipelines retire plant, property and equipment from service, the original book cost and related accumulated depreciation and amortization are derecognized and any gain or loss is recorded in earnings.

Energy
Power generation and natural gas storage plant, equipment and structures are recorded at cost and, once the assets are ready for their intended use, depreciated by major component on a straight-line basis over their estimated service lives at average annual rates ranging from two per cent to 20 per cent. Other equipment is depreciated at various rates. The cost of overhauls of equipment is capitalized and depreciated over the estimated service lives of the overhauls. Interest is capitalized on facilities under construction. When these assets are retired from plant, property and equipment from service, the original book cost and related accumulated depreciation and amortization are derecognized and any gain or loss is recorded in earnings.

Corporate
Corporate plant, property and equipment are recorded at cost and depreciated on a straight-line basis over their estimated useful lives at average annual rates ranging from three per cent to 20 per cent.

Impairment of Long-Lived Assets
The Company reviews long-lived assets, such as plant, property and equipment, and intangible assets for impairment whenever events or changes in circumstances indicate the carrying value may not be recoverable. If the total of the estimated undiscounted future cash flows is less than the carrying value of the assets, an impairment loss is recognized for the excess of the carrying value over the fair value of the assets.

Acquisitions and Goodwill
The Company accounts for business acquisitions using the acquisition method of accounting and, accordingly, the assets and liabilities of the acquired entities are primarily measured at their estimated fair value at the date of acquisition with limited exception. Goodwill is not amortized and is tested for impairment on an annual basis or more frequently if events or changes in circumstances indicate that the asset might be impaired. The annual review for goodwill impairment is performed at the reporting unit level which is one level below the Company's operating segments. The Company initially assesses qualitative factors to determine whether events or changes in circumstances indicate that the goodwill might be impaired. If TransCanada concludes that it is not more likely than not that fair value of the reporting unit is greater than its carrying value, the first step of the two-step impairment test is performed by comparing the fair value of the reporting unit to its book value, which includes goodwill. If the fair value is less than book value, an impairment is indicated and a second step is performed to measure the amount of the impairment. In the second step, the implied fair value of goodwill is calculated by deducting the recognized amounts of all tangible and intangible net assets of the reporting unit from the fair value determined in the initial assessment. If the carrying value of goodwill exceeds the calculated implied fair value of goodwill, an impairment charge is recorded in an amount equal to the difference.

Power Purchase Arrangements
A PPA is a long-term contract for the purchase or sale of power on a predetermined basis. The PPAs under which TransCanada buys power are accounted for as operating leases. The initial payments for these PPAs were recognized in Intangible and Other Assets and amortized on a straight-line basis over the term of the contracts, which expire in 2017 and 2020. A portion of these PPAs has been subleased to third parties under terms and conditions similar to the PPAs. The subleases are accounted for as operating leases and TransCanada records the margin earned from the subleases as a component of Revenues.

Income Taxes
The Company uses the liability method of accounting for income taxes. This method requires the recognition of deferred income tax assets and liabilities for future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. Deferred income tax assets and liabilities are measured using enacted tax rates at the balance sheet date that are anticipated to apply to taxable income in the years in which temporary differences are expected to be reversed or settled. Changes to these balances are recognized in income in the period during which they occur except for changes in balances related to the Canadian Mainline, Alberta System and Foothills, which are deferred until they are refunded or recovered in tolls, as permitted by the NEB.

Canadian income taxes are not provided on the unremitted earnings of foreign investments that the Company does not intend to repatriate in the foreseeable future.

Asset Retirement Obligations
The Company recognizes the fair value of a liability for asset retirement obligations (ARO) in the period in which it is incurred, when a legal obligation exists and a reasonable estimate of fair value can be made. The fair value is added to the carrying amount of the associated asset and the liability is accreted through charges to operating expenses.

Recorded ARO relates to the non-regulated natural gas storage operations and certain power generation facilities. The scope and timing of asset retirements related to natural gas pipelines, oil pipelines and hydroelectric power plants is indeterminable. As a result, the Company has not recorded an amount for ARO related to these assets, with the exception of certain abandoned facilities.

Environmental Liabilities
The Company records liabilities on an undiscounted basis for environmental remediation efforts that are likely to occur and where the cost can be reasonably estimated. The estimates, including associated legal costs, are based on available information using existing technology and enacted laws and regulations. The estimates are subject to revision in future periods based on actual costs incurred or new circumstances. Amounts expected to be recovered from other parties, including insurers, are recorded as an asset separate from the associated liability.

Emission allowances or credits purchased for compliance are recorded on the Balance Sheet at historical cost and expensed when they are utilized. Compliance costs are expensed when incurred. Allowances granted to or internally generated by TransCanada are not attributed a value for accounting purposes. When required, TransCanada accrues emission liabilities on the Balance Sheet upon the generation or sale of power using the best estimate of the amount required to settle the obligation. Allowances and credits not used for compliance are sold and any gain or loss is recorded in Revenues.

Stock Options and Other Compensation Programs
TransCanada's Stock Option Plan permits options for the purchase of common shares to be awarded to certain employees, including officers. Stock options granted are recorded using the fair value method. Under this method, compensation expense is measured at the grant date based on the fair value as calculated using a binomial model and is recognized on a straight-line basis over the vesting period, with an offset to Additional Paid-In Capital. Upon exercise of stock options, amounts originally recorded against Additional Paid-In Capital are reclassified to Common Shares.

The Company has medium-term incentive plans, under which payments are made to eligible employees. The expense related to these incentive plans is accounted for on an accrual basis. Under these plans, benefits vest when certain conditions are met, including the employees' continued employment during a specified period and achievement of specified corporate performance targets.

Employee Post-Retirement Benefits
The Company sponsors defined benefit pension plans (DB Plans), defined contribution plans (DC Plans), a Savings Plan and other post-retirement benefit plans. Contributions made by the Company to the DC Plans and Savings Plan are expensed in the period in which contributions are made. The cost of the DB Plans and other post-retirement benefits received by employees is actuarially determined using the projected benefit method pro-rated based on service and management's best estimate of expected plan investment performance, salary escalation, retirement age of employees and expected health care costs.

The DB Plans' assets are measured at fair value. The expected return on the DB Plans' assets is determined using market-related values based on a five-year moving average value for all of the DB Plans' assets. Past service costs are amortized over the expected average remaining service life of the employees. Adjustments arising from plan amendments are amortized on a straight-line basis over the average remaining service period of employees active at the date of amendment. The Company recognizes the overfunded or underfunded status of its DB Plans as an asset or liability, respectively, on its Balance Sheet and recognizes changes in that funded status through Other Comprehensive Income (OCI) in the year in which the change occurs. The excess of net actuarial gains or losses over 10 per cent of the greater of the benefit obligation and the market-related value of the DB Plans' assets, if any, is amortized out of Accumulated Other Comprehensive Loss (AOCI) over the average remaining service period of the active employees. When the restructuring of a benefit plan gives rise to both a curtailment and a settlement, the curtailment is accounted for prior to the settlement.

For certain regulated operations, post-retirement benefit amounts are recoverable through tolls as benefits are funded. The Company records any unrecognized gains or losses or changes in actuarial assumptions related to these post-retirement benefit plans as either regulatory assets or liabilities. The regulatory assets or liabilities are amortized on a straight-line basis over the average remaining service life of active employees.

Foreign Currency Transactions and Translation
Foreign currency transactions are those transactions whose terms are denominated in a currency other than the currency of the primary economic environment in which the company or reporting subsidiary operates, referred to as the functional currency. Transactions denominated in foreign currencies are translated into the functional currency using the exchange rate prevailing at the date of the transaction. Monetary assets and liabilities denominated in foreign currencies are translated to the functional currency using the rate of exchange in effect at the balance sheet date whereas non-monetary assets and liabilities are translated at the historical rate of exchange in effect on the date of the transaction. Exchange gains and losses resulting from translation of monetary assets and liabilities are recorded in income except for exchange gains and losses of the foreign currency debt related to Canadian regulated natural gas pipelines, which are deferred until they are refunded or recovered in tolls, as permitted by the NEB.

Gains and losses arising from translation of foreign operations' functional currencies to the Company's Canadian dollar reporting currency are reflected in OCI. Asset and liability accounts are translated at the period-end exchange rates while revenues, expenses, gains and losses are translated at the exchange rates in effect at the time of the transaction. The Company's U.S. dollar-denominated debt has been designated as a hedge of the net investment in foreign subsidiaries and, as a result, the unrealized foreign exchange gains and losses on the U.S. dollar denominated debt are also reflected in OCI. The amounts recognized previously in AOCI are reclassified to Net Income in the event the Company reduces its net investment in a foreign operation.

Derivative Instruments and Hedging Activities
All derivative instruments are recorded on the balance sheet at fair value, unless they qualify for and are designated under a normal purchase and normal sales exemption, or are considered to meet other permitted exemptions.

The Company applies hedge accounting to arrangements that qualify and are designated for hedge accounting treatment, which includes fair value and cash flow hedges, and hedges of foreign currency exposures of net investments in foreign operations. Hedge accounting is discontinued prospectively if the hedging relationship ceases to be effective or the hedging or hedged items cease to exist as a result of maturity, expiry, sale, termination, cancellation or exercise.

In a fair value hedging relationship, the carrying value of the hedged item is adjusted for changes in fair value attributable to the hedged risk and these changes are recognized in Net Income. Changes in the fair value of the hedged item, to the extent that the hedging relationship is effective, are offset by changes in the fair value of the hedging item, which are also recorded in Net Income. Changes in the fair value of foreign exchange and interest rate fair value hedges are recorded in Interest Income and Other and Interest Expense, respectively. If hedge accounting is discontinued, the carrying value of the hedged item is no longer adjusted and the cumulative fair value adjustments to the carrying value of the hedged item are amortized to Net Income over the remaining term of the original hedging relationship.

In a cash flow hedging relationship, the effective portion of the change in the fair value of the hedging derivative is initially recognized in OCI, while any ineffective portion is recognized in Net Income in the same financial statement category as the underlying transaction. When hedge accounting is discontinued, the amounts recognized previously in AOCI are reclassified to Revenues, Interest Expense and Interest Income and Other, as appropriate, during the periods when the variability in cash flows of the hedged item affects Net Income or as the original hedged item settles. Gains and losses on derivatives are reclassified immediately to Net Income from AOCI when the hedged item is sold or terminated early, or when it becomes probable that the anticipated transaction will not occur.

In hedging the foreign currency exposure of a net investment in a foreign operation, the effective portion of foreign exchange gains and losses on the hedging instruments is recognized in OCI and the ineffective portion is recognized in Net Income. The amounts recognized previously in AOCI are reclassified to Net Income in the event the Company reduces its net investment in a foreign operation.

In some cases, derivatives do not meet the specific criteria for hedge accounting treatment. In these instances, the changes in fair value are recorded in Net Income in the period of change.

The recognition of gains and losses on derivatives for Canadian natural gas regulated pipelines exposures is determined through the regulatory process. Gains and losses arising from changes in the fair value of derivatives accounted for as part of RRA, including those that qualify for hedge accounting treatment, can be recovered through the tolls charged by the Company. As a result, these gains and losses are deferred as Regulatory Assets or Regulatory Liabilities and are refunded to or collected from the ratepayers in subsequent years when the derivative settles.

Derivatives embedded in other financial instruments or contracts (host instrument) are recorded as separate derivatives. Embedded derivatives are measured at fair value if their economic characteristics are not clearly and closely related to those of the host instrument, their terms are the same as those of a stand-alone derivative and the total contract is not held for trading or accounted for at fair value. When changes in the fair value of embedded derivatives are measured separately, they are included in Net Income.

Long-Term Debt Transaction Costs
The Company records long-term debt transaction costs as other assets and amortizes these costs using the effective interest method for all costs except those related to the Canadian natural gas regulated pipelines, which continue to be amortized on a straight-line basis in accordance with the provisions of tolling mechanisms.

Guarantees
Upon issuance, the Company records the fair value of certain guarantees entered into by the Company or partially owned entities for which contingent payments may be made. The fair value of these guarantees is estimated by discounting the cash flows that would be incurred by the Company if letters of credit were used in place of the guarantees. Guarantees are recorded as an increase to Equity Investments, Plant, Property and Equipment, or a charge to Net Income, and a corresponding liability is recorded in Other Long-Term Liabilities.

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DESCRIPTION OF TRANSCANADA'S BUSINESS

12 Months Ended

Dec. 31, 2012

DESCRIPTION OF TRANSCANADA'S BUSINESS

DESCRIPTION OF TRANSCANADA'S BUSINESS

1.  DESCRIPTION OF TRANSCANADA'S BUSINESS

TransCanada Corporation (TransCanada or the Company) is a leading North American energy company which operates in three business segments, Natural Gas Pipelines, Oil Pipelines and Energy, each of which offers different products and services.

Natural Gas Pipelines
The Natural Gas Pipelines segment consists of the Company's investments in regulated natural gas pipelines and regulated natural gas storage facilities. Through its Natural Gas Pipelines segment, TransCanada owns and operates:

•

a natural gas transmission system extending from the Alberta/Saskatchewan border east into Québec (Canadian Mainline);

•

a natural gas transmission system in Alberta and northeastern British Columbia (B.C.) (Alberta System);

•

a natural gas transmission system extending from producing fields primarily located in Texas, Oklahoma, the Gulf of Mexico and Louisiana to markets primarily located in Wisconsin, Michigan, Illinois, Ohio and Indiana, and includes regulated natural gas storage facilities in Michigan (ANR);

•

a natural gas transmission system extending from central Alberta to the B.C./Idaho border and to the Saskatchewan/Montana border (Foothills);

•

natural gas transmission systems in Alberta that supply natural gas to the oil sands region of northern Alberta and to a petrochemical complex at Joffre, Alberta (Ventures LP);

•

a natural gas transmission system in Mexico extending from Naranjos, Veracruz to Tamazunchale, San Luis Potosi (Tamazunchale); and

•

a natural gas transmission system in Mexico extending from Manzanillo, Colima to Guadalajara, Jalisco (Guadalajara).

Through its Natural Gas Pipelines segment, TransCanada operates and has ownership interests in natural gas pipeline systems as follows:

•

a 53.6 per cent direct ownership interest in a natural gas transmission system that connects to the Canadian Mainline and serves markets in eastern Canada and the northeastern and midwestern United States (U.S.) (Great Lakes);

•

a 75 per cent direct ownership interest in a natural gas transmission system extending from the B.C./Idaho border to the Oregon/California border (GTN);

•

a 75 per cent direct ownership interest in a natural gas transmission system extending from the Powder River Basin in Wyoming to Northern Border in North Dakota (Bison);

•

a 61.7 per cent interest in a natural gas transmission system that extends from a point near East Hereford, Québec, to the northeastern U.S. (Portland);

•

a 50 per cent interest in a natural gas transmission system that connects with the Canadian Mainline near the Québec/Ontario border and transports natural gas to markets in Québec and to the Portland system (TQM); and

•

a 33.3 per cent controlling interest in TC PipeLines, LP, which has the following ownership interests in pipelines operated by TransCanada:

•

a 46.4 per cent interest in Great Lakes, in which TransCanada has a combined 69 per cent effective ownership interest through TC PipeLines, LP and a direct interest described above;

•

a 50 per cent interest in a natural gas transmission system extending from a point near Monchy, Saskatchewan, to the U.S. Midwest (Northern Border), in which TransCanada has a 16.7 per cent effective ownership interest through TC PipeLines, LP;

•

a 25 per cent interest in GTN, in which TransCanada has a combined 83.3 per cent effective ownership interest through TC PipeLines, LP and a direct interest described above;

•

a 25 per cent interest in Bison, in which TransCanada has a combined 83.3 per cent effective ownership interest through TC PipeLines, LP and a direct interest described above;

•

a 100 per cent interest in a natural gas transmission system extending from Arizona to Baja California at the Mexico/California border (North Baja), in which TransCanada has a 33.3 per cent effective ownership interest through TC PipeLines, LP; and

•

a 100 per cent interest in a natural gas transmission system extending from Malin, Oregon, to Wadsworth, Nevada (Tuscarora), in which TransCanada has a 33.3 per cent effective ownership interest through TC PipeLines, LP.

TransCanada does not operate but has ownership interests in natural gas pipelines and natural gas marketing activities as follows:

•

a 44.5 per cent interest in a natural gas transmission system that connects with the Canadian Mainline near Waddington, New York, and delivers natural gas to customers in the northeastern U.S. (Iroquois);

•

a 46.5 per cent interest in a natural gas transmission system extending from Mariquita to Cali in Colombia (TransGas); and

•

a 30 per cent interest in a natural gas transmission system extending from Loma de la Lata, Argentina to Concepción, Chile (Gas Pacifico), and in an industrial natural gas marketing company based in Concepción (INNERGY).

TransCanada is currently constructing natural gas pipeline systems as follows:

•

an extension to the Tamazunchale pipeline, extending the natural gas transmission system from Tamazunchale, San Luis Potosi to El Sauz, Queretaro;

•

a natural gas transmission system that will transport natural gas from Chihuahua to Topolobampo, Mexico (Topolobampo); and

•

a natural gas transmission system that will transport natural gas from El Oro to Mazatlan, Mexico (Mazatlan).

TransCanada is currently developing the following natural gas pipeline systems:

•

the proposed Coastal GasLink project consists of a natural gas transmission system that will transport natural gas from the Montney gas-producing region near Dawson Creek, B.C. to a liquefied natural gas export facility near Kitimat, B.C.; and

•

the proposed Prince Rupert Gas Transmission Project consists of a pipeline to deliver natural gas from the Fort St. John area of B.C. to the proposed Pacific Northwest LNG facility at Port Edward near Prince Rupert, B.C.

Oil Pipelines
The Oil Pipelines segment consists of a wholly owned and operated crude oil pipeline system which connects Alberta crude oil supplies to U.S. refining markets in Illinois and Oklahoma (Keystone Pipeline System).

TransCanada is currently constructing oil pipeline infrastructure as follows:

•

a crude oil pipeline to connect the crude oil hub at Cushing, Oklahoma to the U.S. Gulf Coast refining market (Gulf Coast Project);

•

the Cushing Marketlink receipt facilities that will transport crude oil supply from the Permian Basin in western Texas to the U.S. Gulf Coast on facilities that form part of the Gulf Coast Project; and

•

a crude oil terminal to be located at Hardisty, Alberta (Keystone Hardisty Terminal) that will provide Western Canadian producers with new batch accumulation tankage and pipeline infrastructure and access to the Keystone Pipeline System.

TransCanada is currently developing oil pipeline infrastructure as follows:

•

a new 1,897 km (1,179 mile) crude oil pipeline from Hardisty, Alberta to Steele City, Nebraska (Keystone XL), subject to regulatory approval;

•

the Bakken Marketlink project that will transport crude oil supply from the Williston Basin in North Dakota and Montana to Cushing, Oklahoma on facilities that form part of Keystone XL;

•

the proposed Northern Courier Pipeline, a 90 km (54 mile) pipeline system to service the Fort Hills mine site and transport bitumen and diluent between the Fort Hills mine site and the proposed Voyageur Upgrader, north of Fort McMurray, Alberta. The Company has been selected by the Fort Hills Energy Limited Partnership to design, build, own and operate the proposed pipeline; and

•

the Grand Rapids Pipeline in northern Alberta, which includes both crude oil and diluent lines to transport volumes approximately 500 km (300 mile) between the producing area northwest of Fort McMurray and the Edmonton/Heartland region. The Company has entered into a joint venture agreement with Phoenix Energy Holdings Limited to develop the pipeline.

Energy
The Energy segment primarily consists of the Company's investments in electrical power generation plants and non-regulated natural gas storage facilities. Through its Energy segment, the Company owns and operates:

•

a natural gas and oil-fired generating facility in Queens, New York, consisting of multiple units employing steam turbine, combined-cycle and combustion turbine technology (Ravenswood);

•

a natural gas-fired, combined-cycle power plant in Halton Hills, Ontario (Halton Hills);

•

hydroelectric generation assets located in New Hampshire, Vermont and Massachusetts (TC Hydro);

•

a natural gas-fired peaking facility located near Phoenix, Arizona (Coolidge);

•

a natural gas-fired, combined-cycle plant in Burrillville, Rhode Island (Ocean State Power);

•

a natural gas-fired cogeneration plant near Trois-Rivières, Québec (Bécancour);

•

natural gas-fired cogeneration plants in Alberta at Carseland, Redwater, Bear Creek and MacKay River;

•

a wind farm located in Kibby and Skinner townships in northwestern Franklin County, Maine (Kibby Wind);

•

a natural gas-fired cogeneration plant near Saint John, New Brunswick (Grandview);

•

a waste-heat fuelled power plant and the Cancarb thermal carbon black facility in Medicine Hat, Alberta (Cancarb);

•

a natural gas storage facility near Edson, Alberta (Edson); and

•

an underground natural gas storage facility near Crossfield, Alberta (CrossAlta).

TransCanada does not operate but has ownership interests in power generation plants as follows:

•

a 48.9 per cent partnership interest and a 31.6 per cent partnership interest in the nuclear power generation facilities of Bruce A and Bruce B (collectively Bruce Power), respectively, located near Tiverton, Ontario;

•

a 62 per cent interest in the Baie-des-Sables, Anse-à-Valleau, Carleton, Montagne-Sèche and Gros-Morne wind farms in Gaspé, Québec (Cartier Wind); and

•

a 50 per cent interest in a natural gas-fired, combined-cycle plant in Toronto, Ontario (Portlands Energy).

TransCanada has long-term power purchase arrangements (PPA) in place for:

•

a 100 per cent interest in the Sheerness power facility near Hanna, Alberta, which has 756 megawatts (MW) of generating capacity;

•

a 100 per cent interest in the Sundance A power facilities near Wabamun, Alberta, which has 560 MW of generating capacity; and

•

a 50 per cent interest in ASTC Power Partnership, which has a PPA in place for 706 MW of generating capacity from the Sundance B power facilities near Wabamun, Alberta.

TransCanada is currently constructing a 900 MW natural gas-fired power plant at Ontario Power Generation's Lennox site in Greater Napanee, Ontario.

TransCanada also has agreed to purchase nine Ontario solar projects in 2013 and 2014 with a combined capacity of 86 MW.

XML

OTHER LONG-TERM LIABILITIES

12 Months Ended

Dec. 31, 2012

OTHER LONG-TERM LIABILITIES

OTHER LONG-TERM LIABILITIES

13.  OTHER LONG-TERM LIABILITIES

at December 31 (millions of Canadian dollars)	2012	2011
Employee post-retirement benefit (Note 20)	482	321
Fair value of derivative contracts (Note 21)	186	349
Guarantees (Note 24)	17	118
Asset retirement obligations	72	65
Other	125	76
	882	929

XML

EQUITY INVESTMENTS

12 Months Ended

Dec. 31, 2012

EQUITY INVESTMENTS

EQUITY INVESTMENTS

9.  EQUITY INVESTMENTS

		Income/(Loss) from Equity Investments				Equity Investments
	Ownership Interest as at	year ended December 31				at December 31
(millions of Canadian dollars)	December 31, 2012	2012		2011	2010	2012	2011
Natural Gas Pipelines
Northern Border1		72		75	69	511	545
Iroquois	44.5%	41		40	40	174	181
TQM	50.0%	16		17	16	80	82
Other	Various	28		27	28	60	72
Energy
Bruce A	48.9%	(149	)	33	35	4,033	3,561
Bruce B	31.6%	163		77	138	69	115
ASTC Power Partnership	50.0%	40		84	41	42	58
Portlands Energy	50.0%	28		33	33	341	313
CrossAlta2		10		23	45	n/a	18
Other	Various	8		6	8	56	132
		257		415	453	5,366	5,077

1

The results reflect a 50 per cent interest in Northern Border as a result of the Company fully consolidating TC PipeLines, LP. At December 31, 2012, TransCanada had an ownership interest in TC PipeLines, LP of 33.3 per cent
(2011 – 33.3 per cent; 2010 – 38.2 per cent) and its effective ownership of Northern Border, net of non-controlling interests, was 16.7 per cent (2011 – 16.7 per cent; 2010 – 19.1 per cent).

2

In 2011, Property, Plant and Equipment included $63 million of assets owned directly by TransCanada through an undivided interest in the Crossfield joint venture which were utilized in the operations of the CrossAlta joint venture.
In December 2012, TransCanada acquired the remaining 40 per cent interest in CrossAlta to bring the Company's ownership interest to 100 per cent. The results reflect the Company's 60 per cent share of equity income up to
December 18, 2012. Refer to Note 23, Acquisitions and Dispositions, for additional information.

Distributions received from equity investments for the year ended December 31, 2012 were $436 million (2011 – $494 million; 2010 – $486 million) of which $60 million (2011 – $101 million; 2010 – $40 million) were returns of capital and are included in Deferred amounts and other in the Consolidated Statement of Cash Flows. The undistributed earnings from equity investments as at December 31, 2012 were $883 million (2011 – $1,062 million; 2010 – $1,141 million). At December 31, 2012, the difference between the carrying value of the investment and the underlying equity in the net assets of Northern Border Pipeline Company and Bruce Power is US$119 million (2011 – US$120 million) and $918 million (2011 – $820 million), respectively. This difference is primarily due to the fair value assessment of assets at the time of the acquisitions of Northern Border and Bruce Power, and interest capitalized related to the refurbishment of Units 1 and 2 at Bruce Power.

Summarized Financial Information of Equity Investments

year ended December 31 (millions of Canadian dollars)	2012		2011		2010
Income
Revenues	3,860		4,042		3,920
Operating and other expenses	(3,090	)	(2,989	)	(2,773	)
Net income	717		929		1,009
Net income attributable to TransCanada	257		415		453

at December 31 (millions of Canadian dollars)	2012		2011
Balance Sheet
Current assets	1,593		1,430
Non current assets	12,154		11,550
Current liabilities	(1,187	)	(1,172	)
Non current liabilities	(3,787	)	(3,232	)

XML

EMPLOYEE POST-RETIREMENT BENEFITS (Details 4) (CAD) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Net change in the Level III fair value category
Plan assets at fair value - end of year	1,857	1,685
Significant Unobservable Inputs (Level III)
Net change in the Level III fair value category
Plan assets at fair value - end of year	19	20
Other Investments: Private Equity Funds
Net change in the Level III fair value category
Plan assets at fair value - end of year	19	20
Other Investments: Private Equity Funds | Significant Unobservable Inputs (Level III)
Net change in the Level III fair value category
Plan assets at fair value - beginning of year	20	21
Realized and unrealized losses	(1)	(2)
Purchases and sales		1
Plan assets at fair value - end of year	19	20

XML

OTHER CURRENT ASSETS

12 Months Ended

Dec. 31, 2012

OTHER CURRENT ASSETS

OTHER CURRENT ASSETS

5.  OTHER CURRENT ASSETS

at December 31 (millions of Canadian dollars)	2012	2011
Fair value of derivative contracts (Note 21)	259	361
Deferred income tax assets (Note 15)	290	248
Regulatory assets (Note 8)	178	178
Other	270	327
	997	1,114

XML

OTHER CURRENT ASSETS (Details) (CAD) In Millions, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
OTHER CURRENT ASSETS
Fair value of derivative contracts (Note 21)	259	361
Deferred income tax assets (Note 15)	290	248
Regulatory assets (Note 8)	178	178
Other	270	327
Total other current assets	997	1,114

XML

ACCOUNTING CHANGES

12 Months Ended

Dec. 31, 2012

ACCOUNTING CHANGES

ACCOUNTING CHANGES

3.  ACCOUNTING CHANGES

Changes in Accounting Policies for 2012

Fair Value Measurement
Effective January 1, 2012, the Company adopted the Accounting Standards Update (ASU) on fair value measurements as issued by the Financial Accounting Standards Board (FASB). Adoption of this ASU has resulted in an increase in the qualitative and quantitative disclosures regarding Level III measurements which have been included in Note 21.

Intangibles – Goodwill
Effective January 1, 2012, the Company adopted the ASU on testing goodwill for impairment as issued by the FASB. Adoption of this ASU has resulted in a change in the accounting policy related to testing goodwill for impairment, as the Company is now permitted to first assess qualitative factors affecting the fair value of a reporting unit in comparison to the carrying amount as a basis for determining whether it is required to proceed to the two-step quantitative impairment test. The adoption of this standard had no impact on reported values of goodwill.

Future Accounting Changes

Balance Sheet Offsetting/Netting
In December 2011, the FASB issued amended guidance to enhance disclosures that will enable users of the financial statements to evaluate the effect, or potential effect, of netting arrangements on an entity's financial position. The amendments result in enhanced disclosures by requiring additional information regarding financial instruments and derivative instruments that are offset in accordance with current U.S. GAAP. This guidance is effective for annual periods beginning on or after January 1, 2013. Adoption of these amendments is expected to result in an increase in disclosure regarding financial instruments which are subject to offsetting as described in this amendment.

XML

SEGMENTED INFORMATION

12 Months Ended

Dec. 31, 2012

SEGMENTED INFORMATION

SEGMENTED INFORMATION

4.  SEGMENTED INFORMATION

year ended December 31, 2012 (millions of Canadian dollars)	Natural Gas Pipelines		Oil Pipelines		Energy		Corporate		Total
Revenues	4,264		1,039		2,704		–		8,007
Income from equity investments	157		–		100		–		257
Plant operating costs and other	(1,365	)	(296	)	(819	)	(97	)	(2,577	)
Commodity purchases resold	–		–		(1,049	)	–		(1,049	)
Property taxes	(315	)	(45	)	(74	)	–		(434	)
Depreciation and amortization	(933	)	(145	)	(283	)	(14	)	(1,375	)
	1,808		553		579		(111	)	2,829
Interest expense									(976	)
Interest income and other									85
Income before income taxes									1,938
Income tax expense									(466	)
Net Income									1,472
Net Income Attributable to Non-Controlling Interests									(118	)
Net Income Attributable to Controlling Interests									1,354
Preferred Share Dividends									(55	)
Net Income Attributable to Common Shares									1,299

year ended December 31, 2011 (millions of Canadian dollars)	Natural Gas Pipelines		Oil Pipelines1		Energy		Corporate		Total
Revenues	4,244		827		2,768		–		7,839
Income from equity investments	159		–		256		–		415
Plant operating costs and other	(1,221	)	(209	)	(842	)	(86	)	(2,358	)
Commodity purchases resold	–		–		(991	)	–		(991	)
Property taxes	(307	)	(31	)	(72	)	–		(410	)
Depreciation and amortization	(923	)	(130	)	(261	)	(14	)	(1,328	)
	1,952		457		858		(100	)	3,167
Interest expense									(937	)
Interest income and other									55
Income before income taxes									2,285
Income tax expense									(575	)
Net Income									1,710
Net Income Attributable to Non-Controlling Interests									(129	)
Net Income Attributable to Controlling Interests									1,581
Preferred Share Dividends									(55	)
Net Income Attributable to Common Shares									1,526

1

Commencing in February 2011, TransCanada began recording earnings for the Keystone Pipeline System.

year ended December 31, 2010 (millions of Canadian dollars)	Natural Gas Pipelines		Oil Pipelines	Energy		Corporate		Total
Revenues	4,122		–	2,730		–		6,852
Income from equity investments	153		–	300		–		453
Plant operating costs and other	(1,165	)	–	(805	)	(99	)	(2,069	)
Commodity purchases resold	–		–	(1,178	)	–		(1,178	)
Property taxes	(294	)	–	(71	)	–		(365	)
Depreciation and amortization	(913	)	–	(247	)	–		(1,160	)
Valuation provision	(146	)	–	–		–		(146	)
	1,757		–	729		(99	)	2,387
Interest expense								(701	)
Interest income and other								94
Income before income taxes								1,780
Income tax expense								(387	)
Net Income								1,393
Net Income Attributable to Non-Controlling Interests								(115	)
Net Income Attributable to Controlling Interests								1,278
Preferred Share Dividends								(45	)
Net Income Attributable to Common Shares								1,233

Total Assets

at December 31 (millions of Canadian dollars)	2012	2011
Natural Gas Pipelines	23,210	23,161
Oil Pipelines	10,485	9,440
Energy	13,157	13,269
Corporate	1,481	1,468
	48,333	47,338

Geographic Information

year ended December 31 (millions of Canadian dollars)	2012	2011	2010
Revenues1
Canada – domestic	3,527	3,929	3,178
Canada – export	1,121	1,087	838
United States	3,252	2,752	2,796
Mexico	107	71	40
	8,007	7,839	6,852

1

Revenues are attributed based on the country in which the product or service originated.

at December 31 (millions of Canadian dollars)	2012	2011
Plant, Property and Equipment
Canada	18,054	17,552
United States	14,904	14,388
Mexico	755	527
	33,713	32,467

Capital Expenditures

year ended December 31 (millions of Canadian dollars)	2012	2011	2010
Natural Gas Pipelines	1,389	917	1,192
Oil Pipelines	1,145	1,204	2,696
Energy	24	384	473
Corporate	37	8	15
	2,595	2,513	4,376

XML

PLANT, PROPERTY AND EQUIPMENT

12 Months Ended

Dec. 31, 2012

PLANT, PROPERTY AND EQUIPMENT

PLANT, PROPERTY AND EQUIPMENT

6.  PLANT, PROPERTY AND EQUIPMENT

		2012			2011
at December 31 (millions of Canadian dollars)		Cost	Accumulated Depreciation	Net Book Value	Cost	Accumulated Depreciation	Net Book Value
Natural Gas Pipelines1
Canadian Mainline
	Pipeline	8,801	5,192	3,609	8,785	4,958	3,827
	Compression	3,370	1,880	1,490	3,362	1,765	1,597
	Metering and other	391	182	209	383	175	208
		12,562	7,254	5,308	12,530	6,898	5,632
	Under construction	163	–	163	28	–	28
		12,725	7,254	5,471	12,558	6,898	5,660
Alberta System
	Pipeline	7,214	3,221	3,993	6,701	3,062	3,639
	Compression	1,885	1,177	708	1,778	1,109	669
	Metering and other	958	420	538	931	409	522
		10,057	4,818	5,239	9,410	4,580	4,830
	Under construction	463	–	463	368	–	368
		10,520	4,818	5,702	9,778	4,580	5,198
ANR
	Pipeline	864	49	815	858	47	811
	Compression	514	72	442	510	72	438
	Metering and other	520	81	439	524	59	465
		1,898	202	1,696	1,892	178	1,714
	Under construction	63	–	63	20	–	20
		1,961	202	1,759	1,912	178	1,734
Other Natural Gas Pipelines
	GTN	1,565	411	1,154	1,589	370	1,219
	Great Lakes	1,544	750	794	1,577	741	836
	Foothills	1,634	1,062	572	1,630	1,005	625
	Mexico	536	59	477	547	39	508
	Other2	1,548	226	1,322	1,576	187	1,389
		6,827	2,508	4,319	6,919	2,342	4,577
	Under construction	297	–	297	33	–	33
		7,124	2,508	4,616	6,952	2,342	4,610
		32,330	14,782	17,548	31,200	13,998	17,202
Oil Pipelines
Keystone
	Pipeline	4,897	177	4,720	4,904	80	4,824
	Pumping equipment	1,560	75	1,485	1,502	38	1,464
	Tanks and other	372	23	349	548	15	533
		6,829	275	6,554	6,954	133	6,821
Under construction3		3,678	–	3,678	2,433	–	2,433
		10,507	275	10,232	9,387	133	9,254
Energy
Natural Gas – Ravenswood		1,799	290	1,509	1,799	220	1,579
Natural Gas – Other4		2,975	746	2,229	3,002	665	2,337
Hydro		634	106	528	620	90	530
Wind5		907	118	789	843	88	755
Natural Gas Storage6		677	83	594	454	78	376
Other		134	86	48	131	83	48
		7,126	1,429	5,697	6,849	1,224	5,625
Under construction – Other		136	–	136	308	–	308
		7,262	1,429	5,833	7,157	1,224	5,933
Corporate		154	54	100	129	51	78
		50,253	16,540	33,713	47,873	15,406	32,467

1

In 2012, the Company capitalized $32 million (2011 – $23 million) relating to the equity portion of AFUDC for natural gas pipelines with a corresponding amount recorded in Interest Income and Other.

2

Includes in service assets of Bison, Portland, North Baja, Tuscarora and Ventures LP. Bison went in service in January 2011.

3

Includes $2.0 billion and $1.5 billion for Keystone XL and the Gulf Coast Project, respectively, at December 31, 2012 (2011 – $1.5 billion and $0.9 billion, respectively). Keystone XL remains subject to regulatory approvals.

4

Includes facilities with long-term PPAs that are accounted for as operating leases, including Coolidge which went in service in May 2011. The cost and accumulated depreciation of these facilities
were $601 million and $55 million, respectively, at December 31, 2012 (2011 – $605 million and $34 million, respectively). Revenues of $73 million were recognized in 2012 (2011 – $53 million; 2010 – $15 million)
through the sale of electricity under the related PPAs.

5

Includes Cartier phase two of Gros-Morne effective November 2012, phase one of Gros-Morne effective November 2011, and Montagne-Sèche effective November 2011.

6

Includes acquisition in December 2012 of BP's 40 per cent interest in the assets of the Crossfield Gas Storage facility and BP's interest in CrossAlta Gas Storage & Services Ltd.

XML

RATE-REGULATED BUSINESSES (Details 2) (CAD) In Millions, unless otherwise specified					12 Months Ended								12 Months Ended		12 Months Ended							12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012 Foreign exchange on long-term debt	Dec. 31, 2011 Foreign exchange on long-term debt	Dec. 31, 2012 Foreign exchange on long-term debt Minimum	Dec. 31, 2012 Foreign exchange on long-term debt Maximum	Dec. 31, 2012 Operating and debt-service regulatory liabilities	Dec. 31, 2011 Operating and debt-service regulatory liabilities	Dec. 31, 2012 Other	Dec. 31, 2011 Other	Dec. 31, 2012 Deferred income taxes	Dec. 31, 2011 Deferred income taxes	Dec. 31, 2012 Operating and debt-service regulatory assets	Dec. 31, 2011 Operating and debt-service regulatory assets	Dec. 31, 2012 Operating and debt-service regulatory assets Operating and debt-service regulatory liabilities	Dec. 31, 2011 Operating and debt-service regulatory assets Operating and debt-service regulatory liabilities	Dec. 31, 2012 Adjustment account	Dec. 31, 2011 Adjustment account	Dec. 31, 2010 Adjustment account Canadian Mainline	Dec. 31, 2012 Other	Dec. 31, 2011 Other	Dec. 31, 2012 Other	Dec. 31, 2011 Other
Regulatory Assets
Total regulatory assets	1,807	1,862									1,122	1,178	171	172			80	82	85	434	430
Less: Current portion included in Other Current Assets	178	178
Regulatory assets, noncurrent	1,629	1,684
Remaining Recovery/ Settlement Period													P1Y				P30Y
Regulatory Liabilities
Total regulatory liabilities	368	436	150	184			84	135	134	117
Less: Current portion included in Accounts Payable	100	139
Regulated liabilities, noncurrent	268	297
Remaining Recovery/Settlement Period					P1Y	P17Y	P1Y
Other disclosures pertaining to regulated assets and liabilities
Amount by which pre-tax operating results would have been higher (lower) if regulatory assets and liabilities had not been recorded															(50)	102						97	(106)

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EMPLOYEE POST-RETIREMENT BENEFITS (Details 5) (CAD) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Other post-retirement benefit plans, Savings Plan and DC Plans
Company's expected funding contributions in 2013 for other post-retirement benefit plans, Savings Plan and DC Plans	33
Health care benefits
Assumed average annual rate of increase in the per capita cost of covered health care benefits for 2013 (as a percent)	7.50%
Percentage level to which average annual rate was assumed to decrease	5.00%
Effects of a one per cent change in assumed health care cost trend rates
Effect on total of service and interest cost components, Increase	1
Effect on total of service and interest cost components, Decrease	(1)
Effect on post-retirement benefit obligation, Increase	17
Effect on post-retirement benefit obligation, Decrease	(14)
Pension Benefit Plans
DB Plans
Company's expected funding contributions in 2013	71
Estimated future benefit payments, which reflect expected future service
2013	90
2014	96
2015	101
2016	107
2017	111
2018 to 2022	636
Weighted average actuarial assumptions adopted in measuring the benefit obligations
Discount rate (as a percent)	4.35%	5.05%
Rate of compensation increase (as a percent)	3.15%	3.15%
Weighted average actuarial assumptions adopted in measuring the net benefit plan costs
Discount rate (as a percent)	5.05%	5.55%	6.00%
Expected long-term rate of return on plan assets (as a percent)	6.70%	6.95%	6.95%
Rate of compensation increase (as a percent)	3.15%	3.10%	3.20%
Net benefit cost
Service cost	66	54	50
Interest cost	94	91	89
Expected return on plan assets	(113)	(114)	(108)
Amortization of actuarial loss	18	10	5
Amortization of past service cost	2	2	2
Amortization of regulatory asset	19	12	5
Net Benefit Cost Recognized	86	55	43
Pre-tax amounts recognized in AOCI
Net loss	362	282	179
Prior service cost	5	7	9
Total pre-tax amounts recognized in AOCI	367	289	188
Amount that will be amortized from AOCI into net periodic benefit cost over the next fiscal year
Estimated net loss that will be amortized	(31)
Estimated prior period cost that will be amortized	2
Pre-tax amounts recognized in OCI
Amortization of net loss from AOCI to OCI	(19)	(10)	(5)
Amortization of prior service costs from AOCI to OCI	(2)	(2)	(2)
Funded status adjustment	99	113	15
Total pre-tax amounts recognized in OCI	78	101	8
Pension Benefit Plans | Canadian
DB Plans
Amount of additional letter of credit expected to be provided in next fiscal year	59
Other Post-Retirement Benefit Plans
Estimated future benefit payments, which reflect expected future service
2013	9
2014	9
2015	10
2016	10
2017	11
2018 to 2022	58
Weighted average actuarial assumptions adopted in measuring the benefit obligations
Discount rate (as a percent)	4.35%	5.10%
Weighted average actuarial assumptions adopted in measuring the net benefit plan costs
Discount rate (as a percent)	5.10%	5.60%	6.00%
Expected long-term rate of return on plan assets (as a percent)	6.40%	6.40%	7.80%
Net benefit cost
Service cost	2	2	2
Interest cost	8	9	9
Expected return on plan assets	(2)	(2)	(2)
Amortization of actuarial loss	1	1	1
Amortization of past service cost	1
Amortization of regulatory asset	1	1	1
Amortization of transitional obligation related to regulated business	2	2	2
Net Benefit Cost Recognized	13	13	13
Pre-tax amounts recognized in AOCI
Net loss	33	29	24
Prior service cost	2	2	2
Total pre-tax amounts recognized in AOCI	35	31	26
Amount that will be amortized from AOCI into net periodic benefit cost over the next fiscal year
Estimated net loss that will be amortized	(2)
Pre-tax amounts recognized in OCI
Amortization of net loss from AOCI to OCI	(1)	(1)	(1)
Funded status adjustment	5	6	4
Total pre-tax amounts recognized in OCI	4	5	3

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INTANGIBLE AND OTHER ASSETS (Details) (CAD) In Millions, unless otherwise specified	12 Months Ended					3 Months Ended		12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2012 Sheerness	Dec. 31, 2011 Sheerness	Jun. 30, 2012 Sundance A	Mar. 31, 2012 Sundance A	Dec. 31, 2011 Sundance A	Dec. 31, 2012 Sundance A
INTANGIBLES AND OTHER ASSETS
PPAs	376	428		312	351			77	64
Loans and advances	196	224
Fair value of derivative contracts	187	202
Deferred income tax assets	105	132
Employee post-retirement benefits	11
Other	468	480
Intangibles and Other Assets	1,343	1,466
Amount related to PPAs which are included in intangibles and other assets
Cost	810	810		585	585			225	225
Accumulated Amortization	434	382		273	234			148	161
Net Book Value	376	428		312	351			77	64
Amortization expense	52	52	52
Expected annual amortization expense
2013	52
2014	52
2015	52
2016	52
2017	52
Note receivable
Note receivable from the seller of Ravenswood	236	265
Interest rate on note receivable from the seller of Ravenswood (as a percent)	6.75%
Current portion of the note receivable	40	41
Pre-tax charge recorded	1,938	2,285	1,780			(50)	30	20
Advances to APG
Share of project pre-development costs agreed to be financed (as a percent)	33.30%
Valuation provision recorded on the loan to the APG			146

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SUBSEQUENT EVENT (Details) (Subsequent events, 0.75 % senior notes, due January 15, 2016, TransCanada PipeLines Limited, USD $) In Millions, unless otherwise specified	0 Months Ended
	Jan. 15, 2013
Subsequent events | 0.75 % senior notes, due January 15, 2016 | TransCanada PipeLines Limited
Subsequent Event [Line Items]
Debt issued	$ 750
Interest rate (as a percent)	0.75%

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RATE-REGULATED BUSINESSES (Details)	12 Months Ended		60 Months Ended	1 Months Ended			12 Months Ended
	Dec. 31, 2012 Canadian Mainline Canadian Regulated Operations	Dec. 31, 2011 Canadian Mainline Canadian Regulated Operations	Dec. 31, 2011 Canadian Mainline Canadian Regulated Operations	Sep. 30, 2010 Alberta System Canadian Regulated Operations	Jun. 30, 2010 Foothills Canadian Regulated Operations	Jan. 31, 2012 GTN U.S. Regulated Operations	Dec. 31, 2012 ANR U.S. Regulated Operations TC Offshore LLC
Rate-regulated business
Approved ROE on deemed common equity (as a percent)	8.08%			9.70%	9.70%
Deemed common equity (as a percent)	40.00%	40.00%		40.00%	40.00%
After-tax weighted average cost of capital (ATWACC) fair return included in comprehensive application filed with NEB (as a percent)		7.00%
ROE under application, which is equivalent to after-tax weighted average cost of capital (ATWACC) fair return (as a percent)		12.00%
Settlement period under which pipeline were operated and OM&A costs were established			5 years
Period of operation after which cost and revenue study is required to be filed							3 years
Period of moratorium during which it is prohibited to take certain actions under NGA						4 years

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RISK MANAGEMENT AND FINANCIAL INSTRUMENTS (Details 7) (Derivatives instruments, excluding net investment hedges, CAD) In Millions, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Other current assets
Derivatives fair value
Derivative assets	259	361
Accounts payable and Other
Derivatives fair value
Derivative liabilities	(283)	(485)
Intangible and Other assets
Derivatives fair value
Derivative assets	187	202
Other long-term liabilities
Derivatives fair value
Derivative liabilities	(186)	(349)

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COMMITMENTS, CONTINGENCIES AND GUARANTEES

12 Months Ended

Dec. 31, 2012

COMMITMENTS, CONTINGENCIES AND GUARANTEES

COMMITMENTS, CONTINGENCIES AND GUARANTEES

24.  COMMITMENTS, CONTINGENCIES AND GUARANTEES

Commitments

Operating Leases
Future annual payments, net of sub-lease receipts, under the Company's operating leases for various premises, services and equipment are approximately as follows:

year ended December 31 (millions of Canadian dollars)	Minimum Lease Payments	Amounts Recoverable under Sub-leases		Net Payments
2013	82	(8	)	74
2014	80	(8	)	72
2015	80	(7	)	73
2016	81	(4	)	77
2017	80	(2	)	78
2018 and thereafter	374	(1	)	373
	777	(30	)	747

The operating lease agreements for premises, services and equipment expire at various dates through 2052, with an option to renew certain lease agreements for periods of one year to 10 years. Net rental expense on operating leases in 2012 was $84 million (2011 – $79 million; 2010 – $80 million).

TransCanada's commitments under the Alberta PPAs are considered to be operating leases and a portion of these PPAs have been subleased to third parties under similar terms and conditions. Future payments under these PPAs have been excluded from operating leases in the above table, as these payments are dependent upon plant availability and other factors. TransCanada's share of payments under the PPAs in 2012 was $303 million (2011 – $394 million; 2010 – $363 million). The generating capacities and expiry dates of the PPAs are as follows:

	Megawatts	Expiry Date
Sundance A	560	December 31, 2017
Sundance B1	353	December 31, 2020
Sheerness	756	December 31, 2020

1

Held within TransCanada's 50 per cent interest in ASTC Power Partnership.

TransCanada and its affiliates have long-term natural gas transportation and natural gas purchase arrangements as well as other purchase obligations, all of which are transacted at market prices and in the normal course of business.

Other Commitments
At December 31, 2012, TransCanada was committed to Natural Gas Pipelines capital expenditures totalling approximately $1,322 million, primarily related to construction costs related to the Alberta System and Mexico pipeline projects.

At December 31, 2012, the Company was committed to Oil Pipelines capital expenditures totalling approximately $1,732 million, primarily related to construction costs of Keystone XL and the Gulf Coast Project. At December 31, 2012, the Company was committed to Energy capital expenditures totalling approximately $62 million and related to capital costs of the Napanee Generating Station.

On December 15, 2011, TransCanada agreed to purchase nine Ontario solar projects from Canadian Solar Solutions Inc., with a combined capacity of 86 MW, for $476 million. Under the terms of the agreement, each of the nine solar projects will be developed and constructed by Canadian Solar Solutions Inc. using photovoltaic panels. TransCanada will purchase each project once construction and acceptance testing have been completed and operations have begun under 20-year PPAs with the Ontario Power Authority (OPA) under the Feed-in Tariff program in Ontario. TransCanada anticipates the projects will be placed in service between early 2013 and late 2014, subject to regulatory approvals.

Contingencies
TransCanada is subject to laws and regulations governing environmental quality and pollution control. At December 31, 2012, the Company had accrued approximately $37 million (2011 – $49 million) related to operating facilities, which represents the estimated amount it expects to expend to remediate the sites. However, additional liabilities may be incurred as assessments occur and remediation efforts continue.

TransCanada and its subsidiaries are subject to various legal proceedings, arbitrations and actions arising in the normal course of business. While the final outcome of such legal proceedings and actions cannot be predicted with certainty, it is the opinion of management that the resolution of such proceedings and actions will not have a material impact on the Company's consolidated financial position or results of operations.

Guarantees
TransCanada and its joint venture partners on Bruce B, Cameco Corporation and BPC Generation Infrastructure Trust (BPC), have severally guaranteed one-third of certain contingent financial obligations of Bruce B related to power sales agreements, a lease agreement and contractor services. The Bruce B guarantees have terms to 2018 except for one guarantee with no termination date that has no exposure associated with it. In addition, TransCanada and BPC have each severally guaranteed one-half of certain contingent financial obligations of Bruce A related to a sublease agreement, an agreement with the OPA to restart the Bruce A power generation units, and certain other financial obligations. The Bruce A guarantees have terms to 2019. TransCanada's share of the potential exposure under these Bruce A and Bruce B guarantees was estimated to be $897 million at December 31, 2012. The carrying amount of these Bruce Power guarantees at December 31, 2012 is estimated to be $10 million which has been included in Other Long-Term Liabilities. The Company's exposure under certain of these guarantees is unlimited.

In addition to the guarantees for Bruce Power, the Company and its partners in certain other jointly owned entities have either (i) jointly and severally, (ii) jointly or (iii) severally guaranteed the financial performance of these entities related primarily to redelivery of natural gas, PPA payments and the payment of liabilities. The guarantees have terms ranging from 2013 to 2040. TransCanada's share of the potential exposure under these assurances was estimated at December 31, 2012 to range from $43 million to a maximum of $89 million. The carrying amount of these guarantees at December 31, 2012 is estimated to be $7 million, which has been included in Other Long-Term Liabilities. For certain of these entities, any payments made by TransCanada under these guarantees in excess of its ownership interest are to be reimbursed by its partners.

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COMMON SHARES (Tables)

12 Months Ended

Dec. 31, 2012

COMMON SHARES

Schedule of common shares

		Number of Shares	Amount
		(thousands)	(millions of Canadian dollars)
Outstanding at January 1, 2010		684,359	11,338
	Dividend reinvestment and share purchase plan	10,670	378
	Exercise of options	1,201	29
Outstanding at December 31, 2010		696,230	11,745
	Dividend reinvestment and share purchase plan	5,371	202
	Exercise of options	2,260	64
Outstanding at December 31, 2011		703,861	12,011
	Exercise of options	1,600	58
Outstanding at December 31, 2012		705,461	12,069

Schedule of stock options activity

	Number of Options		Weighted Average Exercise Prices	Options Exercisable
	(thousands)			(thousands)
Outstanding at January 1, 2010	8,274		$30.56	6,212
Granted	1,367		$35.32
Exercised	(1,201	)	$22.04
Forfeited	(34	)	$27.35
Outstanding at December 31, 2010	8,406		$32.57	6,458
Granted	970		$38.02
Exercised	(2,260	)	$25.86
Forfeited	(16	)	$35.83
Outstanding at December 31, 2011	7,100		$35.44	5,165
Granted	1,978		$42.03
Exercised	(1,600	)	$33.13
Forfeited	(44	)	$36.55
Outstanding at December 31, 2012	7,434		$37.69	4,588

Schedule of stock options outstanding and exercisable by the range of exercise price

at December 31, 2012	Options Outstanding			Options Exercisable
Range of Exercise Prices	Number of Options	Weighted Average Exercise Price	Weighted Average Remaining Contractual Life	Number of Options	Weighted Average Exercise Price	Weighted Average Remaining Contractual Life
	(thousands)		(years)	(thousands)		(years)
$30.10 to $31.97	1,093	$31.95	3.2	1,093	$31.95	3.2
$32.40 to $35.08	1,387	$34.64	4.0	1,160	$34.55	4.0
$35.23 to $37.93	1,202	$37.52	5.0	556	$37.22	4.9
$38.10 to $39.75	1,750	$38.83	1.7	1,750	$38.83	1.7
$41.65 to $45.29	2,002	$42.03	6.1	29	$41.87	5.9
	7,434	$37.69	3.9	4,588	$35.93	2.7

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NOTES PAYABLE

12 Months Ended

Dec. 31, 2012

NOTES PAYABLE

NOTES PAYABLE

11.  NOTES PAYABLE

	2012		2011
(millions of Canadian dollars)	Outstanding December 31	Weighted Average Interest Rate per Annum at December 31	Outstanding December 31	Weighted Average Interest Rate per Annum at December 31
Canadian dollars	803	1.2%	466	1.2%
U.S. dollars (2012 – US$1,480; 2011 – US$1,373)	1,472	0.4%	1,397	0.5%
	2,275		1,863

Notes payable consists of commercial paper issued by TransCanada PipeLines Limited (TCPL), TransCanada PipeLine USA Ltd. (TCPL USA) and TransCanada Keystone Pipeline, LP (TC Keystone) and drawings on line-of-credit and demand facilities.

At December 31, 2012, total committed revolving and demand credit facilities of $5.3 billion were available. When drawn, interest on the lines of credit is charged at prime rates of Canadian chartered and U.S. banks, and at other negotiated financial bases. These unsecured credit facilities included the following:

•

a $2.0 billion committed, syndicated, revolving, extendible TCPL credit facility, maturing October 2017. The facility was fully available at December 31, 2012. The cost to maintain the credit facility was $4 million in 2012 (2011 – $2 million; 2010 – $2 million);

•

a US$300 million committed, syndicated, revolving TCPL USA credit facility, guaranteed by TransCanada and maturing February 2013. At December 31, 2012, this facility was fully available. This facility is part of the initial US$1.0 billion credit facility discussed in Note 14. The cost to maintain the credit facility was nil in 2012 (2011 – $1 million; 2010 – $1 million);

•

a US$1.0 billion committed, syndicated, revolving, extendible TC Keystone credit facility, guaranteed by TCPL and TCPL USA and maturing November 2013. The facility was fully available at December 31, 2012. The cost to maintain the credit facility was $1 million in 2012 (2011 – $4 million; 2010 – $5 million);

•

a US$1.0 billion committed, syndicated, revolving, extendible TCPL USA credit facility, guaranteed by TCPL and maturing October 2013. At December 31, 2012, this facility was fully available. The cost to maintain the credit facility was $1 million in 2012 (2011 – $4 million; 2010 – $4 million); and

•

demand lines totalling $1 billion, which support the issuance of letters of credit and provide additional liquidity. At December 31, 2012, the Company had used approximately $627 million of these demand lines for letters of credit.

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JUNIOR SUBORDINATED NOTES

12 Months Ended

Dec. 31, 2012

JUNIOR SUBORDINATED NOTES

JUNIOR SUBORDINATED NOTES

16.  JUNIOR SUBORDINATED NOTES

			2012		2011
Outstanding loan amount (millions of Canadian dollars)		Maturity Date	Outstanding December 31	Effective Interest Rate	Outstanding December 31	Effective Interest Rate
TRANSCANADA PIPELINES LIMITED
	U.S. dollars (2012 and 2011 – US$1,000)	2067	994	6.5%	1,016	6.5%

Junior Subordinated Notes of US$1.0 billion mature in 2067 and bear interest at 6.35 per cent per year until May 15, 2017, when interest will convert to a floating rate that is reset quarterly to the three-month London Interbank Offered Rate plus 221 basis points. The Company has the option to defer payment of interest for periods of up to 10 years without giving rise to a default and without permitting acceleration of payment under the terms of the Junior Subordinated Notes. However, the Company would be prohibited from paying dividends during any such deferral period. The Junior Subordinated Notes are subordinated in right of payment to existing and future senior indebtedness and are effectively subordinated to all indebtedness and other obligations of TCPL. The Junior Subordinated Notes are callable at the Company's option at any time on or after May 15, 2017, at 100 per cent of the principal amount of the Junior Subordinated Notes plus accrued and unpaid interest to the date of redemption. The Junior Subordinated Notes are callable earlier, in whole or in part, upon the occurrence of certain events and at the Company's option at an amount equal to the greater of 100 per cent of the principal amount of the Junior Subordinated Notes plus accrued and unpaid interest to the date of redemption and an amount determined by a specified formula in accordance with the terms of the Junior Subordinated Notes.

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RISK MANAGEMENT AND FINANCIAL INSTRUMENTS (Details 10) (Commodity contract, Power, CAD) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Net change in the Level III fair value category
Balance at the beginning of the period	(15)	(8)
New contracts		1
Settlements	(1)	2
Transfers out of Level III	(21)	3
Total gains/(losses) included in Net Income	11
Total gains/ (losses) included in OCI	24	(13)
Balance at the end of the period	(2)	(15)
Unrealized gains included in net income attributable to derivatives still held	1
Level III
Net change in the Level III fair value category
Percentage of increase or decrease in commodity prices	10.00%
Decrease or increase in the fair value of outstanding derivative financial instruments included in Level III	4

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JUNIOR SUBORDINATED NOTES (Tables)

12 Months Ended

Dec. 31, 2012

JUNIOR SUBORDINATED NOTES

Schedule of junior subordinated notes

			2012		2011
Outstanding loan amount (millions of Canadian dollars)		Maturity Date	Outstanding December 31	Effective Interest Rate	Outstanding December 31	Effective Interest Rate
TRANSCANADA PIPELINES LIMITED
	U.S. dollars (2012 and 2011 – US$1,000)	2067	994	6.5%	1,016	6.5%

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RATE-REGULATED BUSINESSES (Tables)

12 Months Ended

Dec. 31, 2012

RATE-REGULATED BUSINESSES

Schedule of regulatory assets and liabilities

at December 31 (millions of Canadian dollars)	2012	2011	Remaining Recovery/ Settlement Period (years)
Regulatory Assets
Deferred income taxes1	1,122	1,178	n/a
Operating and debt-service regulatory assets2	171	172	1
Adjustment account3	80	82	30
Other4	434	430	n/a
	1,807	1,862
Less: Current portion included in Other Current Assets	178	178
	1,629	1,684
Regulatory Liabilities
Foreign exchange on long-term debt5	150	184	1-17
Operating and debt-service regulatory liabilities2	84	135	1
Other4	134	117	n/a
	368	436
Less: Current portion included in Accounts Payable	100	139
	268	297

1

These regulatory assets are underpinned by non-cash transactions or are recovered without an allowance for return as approved by the regulator. Accordingly, these regulatory
assets are not included in rate base and do not yield a return on investment during the recovery period.

2

Operating and debt-service regulatory assets and liabilities represent the accumulation of cost and revenue variances approved by the regulatory authority for inclusion in
determining tolls for the following calendar year. Pre-tax operating results in 2012 would have been $50 million lower (2011 – $102 million higher) had these amounts not been recorded
as regulatory assets and liabilities.

3

A regulatory adjustment account of $85 million was established and agreed upon by Canadian Mainline stakeholders to reduce tolls in 2010. Amortization of the adjustment account
commenced in 2011 at the composite depreciation rate.

4

Pre-tax operating results in 2012 would have been $97 million higher (2011 – $106 million lower) had these amounts not been recorded as regulatory assets and liabilities.

5

Foreign exchange on long-term debt of the Canadian Mainline, Alberta System and Foothills represents the variance resulting from revaluing foreign currency-denominated
debt instruments to the current foreign exchange rate from the historical foreign exchange rate at the time of issue. Foreign exchange gains and losses realized
when foreign debt matures or is redeemed early are expected to be recovered or refunded through the determination of future tolls. In the absence of RRA, U.S. GAAP would have
required the inclusion of these unrealized gains or losses in Net Income.

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CONSOLIDATED STATEMENT OF CASH FLOWS (CAD) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Cash Generated from Operations
Net income	1,472	1,710	1,393
Depreciation and amortization	1,375	1,328	1,160
Deferred income taxes (Note 15)	285	365	526
Income from equity investments (Note 9)	(257)	(415)	(453)
Distributed earnings received from equity investments (Note 9)	376	393	446
Employee post-retirement benefits funding lower than/(in excess of) expense (Note 20)	9	(2)	(50)
Valuation provision for MGP (Note 10)			146
Other	24	72	(7)
Decrease/(increase) in operating working capital (Note 22)	287	235	(285)
Net cash provided by operations	3,571	3,686	2,876
Investing Activities
Capital expenditures (Note 4)	(2,595)	(2,513)	(4,376)
Equity investments	(652)	(633)	(597)
Acquisitions, net of cash acquired (Note 23)	(214)
Deferred amounts and other	205	92	(323)
Net cash used in investing activities	(3,256)	(3,054)	(5,296)
Financing Activities
Dividends on common and preferred shares (Notes 18 and 19)	(1,281)	(1,016)	(754)
Distributions paid to non-controlling interests	(135)	(131)	(112)
Notes payable issued/(repaid), net	449	(224)	472
Long-term debt issued, net of issue costs	1,491	1,622	2,371
Repayment of long-term debt	(980)	(1,272)	(494)
Common shares issued, net of issue costs	53	58	26
Preferred shares issued, net of issue costs			679
Partnership units issued, net of issue costs (Note 23)		321
Net cash (used in)/provided by financing activities	(403)	(642)	2,188
Effect of Foreign Exchange Rate Changes on Cash and Cash Equivalents	(15)	4	(7)
Decrease in Cash and Cash Equivalents	(103)	(6)	(239)
Cash and Cash Equivalents Beginning of year	654	660	899
Cash and Cash Equivalents End of year	551	654	660

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RISK MANAGEMENT AND FINANCIAL INSTRUMENTS (Details 3) (CAD) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS
Credit risk concentration amount due from a counterparty	259	274

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CONSOLIDATED STATEMENT OF EQUITY (CAD) In Millions, unless otherwise specified	Total	TC PipeLines, LP	Equity Attributable to Controlling Interests	Common Shares	Preferred Shares	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Loss	Equity Attributable to Non-Controlling Interests	Equity Attributable to Non-Controlling Interests TC PipeLines, LP	Equity Attributable to Non-Controlling Interests Portland	Equity Attributable to Non-Controlling Interests TRANSCANADA PIPELINES LIMITED
Balance at Dec. 31, 2009				11,338	539	346	4,158	(872)	1,174
Increase (decrease) in equity
Shares issued under dividend reinvestment plan (Note 18)	378			378
Shares issued on exercise of stock options (Note 18)				29
Shares issued under public offering, net of issue costs					685
Issuance of stock options, net of exercises						3
Net income attributable to controlling interests	1,278						1,278
Common share dividends							(1,109)
Preferred share dividends							(45)
Other comprehensive income/(loss)	(408)							(371)
Net income attributable to non-controlling interests	115									87	6
Preferred share dividends												22
Other comprehensive (loss)/ income attributable to non-controlling interests									(37)
Sale of TC PipeLines, LP units
Distributions declared to non-controlling interests									(112)
Foreign exchange and other									17
Balance at Dec. 31, 2010	17,514		16,357	11,745	1,224	349	4,282	(1,243)	1,157
Increase (decrease) in equity
Shares issued under dividend reinvestment plan (Note 18)	202			202
Shares issued on exercise of stock options (Note 18)				64
Issuance of stock options, net of exercises						1
Dilution gain from TC PipeLines, LP units issued (Note 23)						30
Net income attributable to controlling interests	1,581						1,581
Common share dividends							(1,180)
Preferred share dividends							(55)
Other comprehensive income/(loss)	(171)							(206)
Net income attributable to non-controlling interests	129									101	6
Preferred share dividends												22
Other comprehensive (loss)/ income attributable to non-controlling interests									35
Sale of TC PipeLines, LP units
Proceeds, net of issue costs										321
Decrease in TransCanada's ownership										(50)
Distributions declared to non-controlling interests									(131)
Foreign exchange and other									4
Balance at Dec. 31, 2011	18,259		16,794	12,011	1,224	380	4,628	(1,449)	1,465
Increase (decrease) in equity
Shares issued on exercise of stock options (Note 18)				58
Issuance of stock options, net of exercises						(1)
Net income attributable to controlling interests	1,354						1,354
Common share dividends							(1,240)
Preferred share dividends							(55)
Other comprehensive income/(loss)	(20)							1
Net income attributable to non-controlling interests	118									91	5
Preferred share dividends												22
Other comprehensive (loss)/ income attributable to non-controlling interests									(21)
Sale of TC PipeLines, LP units
Distributions declared to non-controlling interests									(135)
Foreign exchange and other									(2)
Balance at Dec. 31, 2012	18,336		16,911	12,069	1,224	379	4,687	(1,448)	1,425

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ACCOUNTING POLICIES (Details)	12 Months Ended
	Dec. 31, 2012 item
Annual review for goodwill impairment
Number of levels below operating segments level considered for measuring reporting unit level	1
Employee Post-Retirement Benefits
Moving average period of basis used to determine expected return on plan assets	5 years
Natural Gas Pipelines | Pipeline | Minimum
Plant, property and equipment
Annual depreciation rate on straight-line basis (as a percent)	1.00%
Natural Gas Pipelines | Pipeline | Maximum
Plant, property and equipment
Annual depreciation rate on straight-line basis (as a percent)	6.00%
Natural Gas Pipelines | Compression | Minimum
Plant, property and equipment
Annual depreciation rate on straight-line basis (as a percent)	1.00%
Natural Gas Pipelines | Compression | Maximum
Plant, property and equipment
Annual depreciation rate on straight-line basis (as a percent)	6.00%
Oil Pipelines | Pipeline | Minimum
Plant, property and equipment
Annual depreciation rate on straight-line basis (as a percent)	2.00%
Oil Pipelines | Pipeline | Maximum
Plant, property and equipment
Annual depreciation rate on straight-line basis (as a percent)	2.50%
Oil Pipelines | Pumping equipment | Minimum
Plant, property and equipment
Annual depreciation rate on straight-line basis (as a percent)	2.00%
Oil Pipelines | Pumping equipment | Maximum
Plant, property and equipment
Annual depreciation rate on straight-line basis (as a percent)	2.50%
Energy | Power generation and natural gas storage plant, equipment and structures | Minimum
Plant, property and equipment
Annual depreciation rate on straight-line basis (as a percent)	2.00%
Energy | Power generation and natural gas storage plant, equipment and structures | Maximum
Plant, property and equipment
Annual depreciation rate on straight-line basis (as a percent)	20.00%
Corporate | Minimum
Plant, property and equipment
Annual depreciation rate on straight-line basis (as a percent)	3.00%
Corporate | Maximum
Plant, property and equipment
Annual depreciation rate on straight-line basis (as a percent)	20.00%

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EMPLOYEE POST-RETIREMENT BENEFITS (Details 2) (CAD) In Millions, unless otherwise specified						12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012 Pension Benefit Plans	Dec. 31, 2011 Pension Benefit Plans	Dec. 31, 2010 Pension Benefit Plans	Dec. 31, 2012 Pension Benefit Plans Debt securities	Dec. 31, 2011 Pension Benefit Plans Debt securities	Dec. 31, 2012 Pension Benefit Plans Debt securities Minimum	Dec. 31, 2012 Pension Benefit Plans Debt securities Maximum	Dec. 31, 2012 Pension Benefit Plans Equity Securities	Dec. 31, 2011 Pension Benefit Plans Equity Securities	Dec. 31, 2012 Pension Benefit Plans Equity Securities Minimum	Dec. 31, 2012 Pension Benefit Plans Equity Securities Maximum	Dec. 31, 2012 Other Post-Retirement Benefit Plans	Dec. 31, 2011 Other Post-Retirement Benefit Plans	Dec. 31, 2010 Other Post-Retirement Benefit Plans
Benefit obligation and fair value of plan assets for plans that are not fully funded
Benefit obligation			(2,142)	(1,836)										(186)	(170)
Plan assets at fair value			1,825	1,656										32	29
Funded Status - Deficit			(317)	(180)										(154)	(141)
Accumulated benefit obligation and fair value of plan assets for plans that are not fully funded
Accumulated benefit obligation			(1,966)	(446)
Plan assets at fair value			1,825	391
Funded Status - Deficit			(141)	(55)
Pension plans' weighted average asset allocations and target allocations by asset category
Percentage of Plan Assets	100.00%	100.00%	100.00%	100.00%		36.00%	39.00%			64.00%	61.00%
Target Allocations (as a percent)								35.00%	60.00%			40.00%	65.00%
Amount of the Company's debt or the Company's common shares included in plan assets						2	2			3	3
Percentage of the Company's debt or the Company's common shares included in plan assets as compared to total plan assets						0.10%	0.10%			0.20%	0.20%
Funded status based on accumulated benefit obligation
Accumulated benefit obligation			(1,966)	(1,691)
Plan assets at fair value	1,857	1,685	1,825	1,656	1,636									32	29	29
Funded Status - Deficit			(141)	(35)

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OTHER LONG-TERM LIABILITIES (Details) (CAD) In Millions, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
OTHER LONG-TERM LIABILITIES
Employee post-retirement benefits	482	321
Fair value of derivative contracts	186	349
Guarantees	17	118
Asset retirement obligations	72	65
Other	125	76
Deferred amounts	882	929

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NON-CONTROLLING INTERESTS

12 Months Ended

Dec. 31, 2012

NON-CONTROLLING INTERESTS

NON-CONTROLLING INTERESTS

17.  NON-CONTROLLING INTERESTS

The Company's non-controlling interests included in the Consolidated Balance Sheet were as follows:

at December 31 (millions of Canadian dollars)	2012	2011
Non-controlling interest in TC PipeLines, LP1	953	997
Preferred shares of TCPL	389	389
Non-controlling interest in Portland2	83	79
	1,425	1,465

The Company's non-controlling interests included in the Consolidated Statement of Income were as follows:

year ended December 31 (millions of Canadian dollars)	2012	2011	2010
Non-controlling interest in TC PipeLines, LP1	91	101	87
Preferred share dividends of TCPL	22	22	22
Non-controlling interest in Portland2	5	6	6
	118	129	115

1

Effective May 3, 2011, the non-controlling interest in TC PipeLines, LP increased from 61.8 per cent to 66.7 per cent due to the issuance of equity to non-controlling
interests in TC PipeLines, LP associated with the sale of 25 per cent interests in GTN LLC and Bison LLC pipelines from TransCanada to TC PipeLines, LP. The
non-controlling interest in TC PipeLines, LP from January 1, 2010 to May 3, 2011 was 61.8 per cent.

2

The non-controlling interests in Portland as at December 31, 2012 represented the 38.3 per cent interest not owned by TransCanada (2011 and 2010 – 38.3 per cent).

Preferred Shares of TCPL

at December 31	Number of Shares	Dividend Rate per Share	Redemption Price per Share	2012	2011
	(thousands)			(millions of Canadian dollars)	(millions of Canadian dollars)
Cumulative First Preferred Shares of Subsidiary
Series U	4,000	$2.80	$50.00	195	195
Series Y	4,000	$2.80	$50.00	194	194
				389	389

The authorized number of preferred shares of TCPL issuable in each series is unlimited. All of the cumulative first preferred shares of TCPL are without par value.

On or after October 15, 2013, TCPL may redeem the Series U preferred shares at $50 per share, and on or after March 5, 2014, TCPL may redeem the Series Y shares at $50 per share.

Cash Dividends
Cash dividends of $22 million or $2.80 per share were paid on the Series U and Series Y preferred shares in each of 2012, 2011 and 2010.

In 2012, TransCanada received fees of $3 million from TC PipeLines, LP (2011 and 2010 – $2 million) and $7 million from Portland (2011 and 2010 – $7 million) for services provided.

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JUNIOR SUBORDINATED NOTES (Details) In Millions, unless otherwise specified			12 Months Ended
	Dec. 31, 2012 CAD	Dec. 31, 2011 CAD	Dec. 31, 2012 TRANSCANADA PIPELINES LIMITED Junior subordinated notes U.S. dollars USD ($)	Dec. 31, 2012 TRANSCANADA PIPELINES LIMITED Junior subordinated notes U.S. dollars CAD	Dec. 31, 2011 TRANSCANADA PIPELINES LIMITED Junior subordinated notes U.S. dollars USD ($)	Dec. 31, 2011 TRANSCANADA PIPELINES LIMITED Junior subordinated notes U.S. dollars CAD
Junior subordinated notes
Amount outstanding	994	1,016	$ 1,000	994	$ 1,000	1,016
Effective interest rate (as a percent)			6.50%	6.50%	6.50%	6.50%
Interest rate until May 15, 2017 (as a percent)			6.35%	6.35%
Variable rate basis after May 15, 2017			3 months LIBOR	3 months LIBOR
Interest rate margin after May 15, 2017 (as a percent)			2.21%	2.21%
Optional period for which payment of interest can be deferred			10 years	10 years
Redemption price as a percentage of principal amount plus accrued and unpaid interest to the date of redemption			100.00%	100.00%

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OTHER CURRENT ASSETS (Tables)

12 Months Ended

Dec. 31, 2012

OTHER CURRENT ASSETS

Schedule of other current assets

at December 31 (millions of Canadian dollars)	2012	2011
Fair value of derivative contracts (Note 21)	259	361
Deferred income tax assets (Note 15)	290	248
Regulatory assets (Note 8)	178	178
Other	270	327
	997	1,114

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INTANGIBLE AND OTHER ASSETS

12 Months Ended

Dec. 31, 2012

INTANGIBLES AND OTHER ASSETS

INTANGIBLES AND OTHER ASSETS

10.  INTANGIBLE AND OTHER ASSETS

at December 31 (millions of Canadian dollars)	2012	2011
PPAs1	376	428
Loans and advances2	196	224
Fair value of derivative contracts (Note 21)	187	202
Deferred income tax assets (Note 15)	105	132
Employee post-retirement benefits (Note 20)	11	–
Other	468	480
	1,343	1,466

1

The following amounts related to PPAs are included in Intangible and Other Assets:

	2012			2011
at December 31 (millions of Canadian dollars)	Cost	Accumulated Amortization	Net Book Value	Cost	Accumulated Amortization	Net Book Value
Sheerness	585	273	312	585	234	351
Sundance A	225	161	64	225	148	77
	810	434	376	810	382	428

• Amortization expense for these PPAs was $52 million for the year ended December 31, 2012 (2011 and 2010 – $52 million). The expected annual amortization expense in each
  of the next five years is $52 million.

2

As at December 31, 2012, TransCanada held a $236 million (2011 – $265 million) note receivable from the seller of Ravenswood which bears interest at 6.75 per cent and
matures in 2040. The current portion of the note receivable of $40 million (2011 – $41 million) is included in Other Current Assets.

Sundance A
In December 2010, Sundance A Units 1 and 2 were withdrawn from service and were subject to a force majeure claim by the PPA owner in January 2011. In July 2012, TransCanada received the binding arbitration decision regarding the Sundance A PPA force majeure and economic destruction claims. The arbitration panel determined that the PPA should not be terminated and ordered TransAlta Corporation (TransAlta) to return Units 1 and 2 to service. The panel also limited TransAlta's force majeure claim from November 20, 2011 until the units can reasonably be returned to service. TransAlta announced that it expects the units to be returned to service in fall 2013.

Between December 2010 and March 2012, TransCanada recorded revenues and costs related to the Sundance A PPA as though the outages of Units 1 and 2 were interruptions of supply. As a result of the decision, TransCanada recorded a $50 million pre-tax charge in second quarter of 2012, comprised of $20 million previously accrued in 2011 and $30 million previously accrued through first quarter of 2012, as these amounts are no longer recoverable. Other than the $20 million charge related to 2011 and the amortization of the original PPA cost, there are no pre-tax earnings recognized in 2012 for the Sundance A PPA.

Advances to Aboriginal Pipeline Group
The Mackenzie Delta gas producers, the Aboriginal Pipeline Group (APG) and TransCanada have an agreement governing TransCanada's role in the Mackenzie Gas Project (MGP). Under the agreement, TransCanada agreed to finance the APG for its one-third share of project pre-development costs. Amounts advanced to the APG for the MGP in 2012 and 2011 have been expensed. In 2010, a valuation provision of $146 million was recorded on the loan to the APG due to uncertainty with the project's ultimate commercial structure, fiscal framework, timeframes under which the project would proceed and when the advances to the APG will be repaid.

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COMMITMENTS, CONTINGENCIES AND GUARANTEES (Details 5) (Contingent financial obligation, CAD) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012
Bruce Power
Guarantees
Estimated amount of potential exposure	897
Estimated carrying amount of guarantees included in Other Long-Term Liabilities	10
Bruce A
Guarantees
Portion of guarantees of certain contingent financial obligations (as a percent)	50.00%
Bruce B
Guarantees
Portion of guarantees of certain contingent financial obligations (as a percent)	33.00%
Number of guarantees with no termination date and no exposure	1
Other
Guarantees
Estimated carrying amount of guarantees included in Other Long-Term Liabilities	7
Other | Minimum
Guarantees
Estimated amount of potential exposure	43
Other | Maximum
Guarantees
Estimated amount of potential exposure	89