10-Q

United States

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

[X] Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

For the quarterly period ended:

September 30, 2016

[ ] Transition report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

For the transition period from _______________ to _______________

Commission File No.	Name of Registrant, State of Incorporation, Address of Principal Executive Offices, and Telephone No.	IRS Employer Identification No.
000-49965	MGE Energy, Inc. (a Wisconsin Corporation) 133 South Blair Street Madison, Wisconsin 53788 (608) 252-7000 mgeenergy.com	39-2040501
000-1125	Madison Gas and Electric Company (a Wisconsin Corporation) 133 South Blair Street Madison, Wisconsin 53788 (608) 252-7000 mge.com	39-0444025

Indicate by check mark whether the registrants (1) have filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) have been subject to such filing requirements for the past 90 days: Yes [X] No [ ]

Indicate by check mark whether the registrants have submitted electronically and posted on their corporate Web sites, 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 registrants were required to submit and post such files):

Yes [X] No [ ]

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See definitions of "large accelerated filer," "accelerated filer," and "smaller reporting company" in Rule 12b-2 of the Exchange Act.

	Large Accelerated Filer	Accelerated Filer	Non-accelerated Filer	Smaller Reporting Company
MGE Energy, Inc.	X
Madison Gas and Electric Company			X

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act):

MGE Energy, Inc. and Madison Gas and Electric Company: Yes [ ] No [X]

Number of Shares Outstanding of Each Class of Common Stock as of October 31, 2016
MGE Energy, Inc.	Common stock, $1.00 par value, 34,668,370 shares outstanding.
Madison Gas and Electric Company	Common stock, $1.00 par value, 17,347,894 shares outstanding (all of which are owned beneficially and of record by MGE Energy, Inc.).

1

Table of Contents

2

PART I. FINANCIAL INFORMATION.

Filing Format

This combined Form 10-Q is being filed separately by MGE Energy, Inc. (MGE Energy) and Madison Gas and Electric Company (MGE). MGE is a wholly owned subsidiary of MGE Energy and represents a majority of its assets, liabilities, revenues, expenses, and operations. Thus, all information contained in this report relates to, and is filed by, MGE Energy. Information that is specifically identified in this report as relating solely to MGE Energy, such as its financial statements and information relating to its nonregulated business, does not relate to, and is not filed by, MGE. MGE makes no representation as to that information. The terms "we" and "our," as used in this report, refer to MGE Energy and its consolidated subsidiaries, unless otherwise indicated.

Forward-Looking Statements

This report, and other documents filed by MGE Energy and MGE with the Securities and Exchange Commission (SEC) from time to time, contain forward-looking statements that reflect management's current assumptions and estimates regarding future performance and economic conditions—especially as they relate to economic conditions, future load growth, revenues, expenses, capital expenditures, financial resources, regulatory matters, and the scope and expense associated with future environmental regulation. These forward-looking statements are made pursuant to the provisions of the Private Securities Litigation Reform Act of 1995. Words such as "believe," "expect," "anticipate," "estimate," "could," "should," "intend," "will," and other similar words generally identify forward-looking statements. Both MGE Energy and MGE caution investors that these forward-looking statements are subject to known and unknown risks and uncertainties that may cause actual results to differ materially from those projected, expressed, or implied.

The factors that could cause actual results to differ materially from the forward-looking statements made by a registrant include (a) those factors discussed in the Registrants' 2015 Annual Report on Form 10-K: Item 1A. Risk Factors, Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations, as updated by Part I, Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations in this report, and Item 8. Financial Statements and Supplementary Data – Note 18, as updated by Part I, Item 1. Financial Statements – Note 7 in this report, and (b) other factors discussed herein and in other filings made by that registrant with the SEC.

Readers are cautioned not to place undue reliance on these forward-looking statements, which apply only as of the date of this report. MGE Energy and MGE undertake no obligation to release publicly any revision to these forward-looking statements to reflect events or circumstances after the date of this report, except as required by law.

Where to Find More Information

The public may read and copy any reports or other information that MGE Energy and MGE file with the SEC at the SEC's public reference room at 100 F Street, NE, Washington, D.C. 20549. The public may obtain information on the operation of the Public Reference Room by calling the SEC at 1-800-SEC-0330. These documents also are available to the public from commercial document retrieval services, the website maintained by the SEC at sec.gov, MGE Energy's website at mgeenergy.com, and MGE's website at mge.com. Copies may be obtained from our websites free of charge. Information contained on MGE Energy's and MGE's websites shall not be deemed incorporated into, or to be a part of, this report.

3

Definitions, Abbreviations, and Acronyms Used in the Text and Notes of this Report

Abbreviations, acronyms, and definitions used in the text and notes of this report are defined below.

MGE Energy and Subsidiaries:
CWDC	Central Wisconsin Development Corporation
MAGAEL	MAGAEL, LLC
MGE	Madison Gas and Electric Company
MGE Energy	MGE Energy, Inc.
MGE Power	MGE Power, LLC
MGE Power Elm Road	MGE Power Elm Road, LLC
MGE Power West Campus	MGE Power West Campus, LLC
MGE Services	MGE Services, LLC
MGE State Energy Services	MGE State Energy Services, LLC
MGE Transco	MGE Transco Investment, LLC
NGV Fueling Services	NGV Fueling Services, LLC
North Mendota	North Mendota Energy & Technology Park, LLC
Other Defined Terms:
AFUDC	Allowance for Funds Used During Construction
ATC	American Transmission Company LLC
BART	Best Available Retrofit Technology
Blount	Blount Station
CAVR	Clean Air Visibility Rule
CCR	Coal Combustion Residual
Codification	Financial Accounting Standards Board Accounting Standards Codification
Columbia	Columbia Energy Center
Cooling degree days	Measure of the extent to which the average daily temperature is above 65 degrees Fahrenheit, which is considered an indicator of possible increased demand for energy to provide cooling
CPP	Clean Power Plan
CSAPR	Cross-State Air Pollution Rule
Dth	Dekatherms, a quantity measure used in respect of natural gas
EGUs	Electric Generating Units
ELG	Effluent Limitations Guidelines
Elm Road Units	Elm Road Generating Station
EPA	United States Environmental Protection Agency
FASB	Financial Accounting Standards Board
FERC	Federal Energy Regulatory Commission
FTR	Financial Transmission Rights
GHG	Greenhouse Gas
Heating degree days (HDD)	Measure of the extent to which the average daily temperature is below 65 degrees Fahrenheit, which is considered an indicator of possible increased demand for energy to provide heating
IRS	Internal Revenue Service
kWh	Kilowatt-hour, a measure of electric energy produced
MISO	Midcontinent Independent System Operator (a regional transmission organization)
MW	Megawatt, a measure of electric energy generating capacity
MWh	Megawatt-hour, a measure of electric energy produced
NAAQS	National Ambient Air Quality Standards
NO2	Nitrogen Dioxide
NOx	Nitrogen Oxides

4

PGA	Purchased Gas Adjustment clause, a regulatory mechanism used to reconcile natural gas costs recovered in rates to actual costs
PJM	PJM Interconnection, LLC (a regional transmission organization)
PM	Particulate Matter
PPA	Purchased Power Agreement
ppb	Parts Per Billion
PSCW	Public Service Commission of Wisconsin
ROE	Return on Equity
Riverside	Riverside Energy Center
SCR	Selective Catalytic Reduction
SEC	Securities and Exchange Commission
SO2	Sulfur Dioxide
the State	State of Wisconsin
Stock Plan	Direct Stock Purchase and Dividend Reinvestment Plan of MGE Energy
UW	University of Wisconsin at Madison
VIE	Variable Interest Entity
WCCF	West Campus Cogeneration Facility
WDNR	Wisconsin Department of Natural Resources
WEPCO	Wisconsin Electric Power Company
Working capital	Current assets less current liabilities
WPDES	Wisconsin Pollutant Discharge Elimination System
WPL	Wisconsin Power and Light Company
XBRL	eXtensible Business Reporting Language

5

Item 1. Financial Statements.

MGE Energy, Inc.

Consolidated Statements of Income (unaudited)

(In thousands, except per-share amounts)

		Three Months Ended				Nine Months Ended
		September 30,				September 30,
		2016		2015		2016		2015
Operating Revenues:
Electric revenues	$	119,147	$	123,364	$	313,452	$	325,027
Gas revenues		17,570		17,431		92,368		108,028
Total Operating Revenues		136,717		140,795		405,820		433,055
Operating Expenses:
Fuel for electric generation		20,505		17,055		47,567		41,624
Purchased power		9,167		18,484		38,698		62,614
Cost of gas sold		4,314		4,299		43,247		57,868
Other operations and maintenance		40,146		38,721		123,839		120,895
Depreciation and amortization		11,212		11,182		33,358		33,026
Other general taxes		4,846		4,877		14,841		14,951
Total Operating Expenses		90,190		94,618		301,550		330,978
Operating Income		46,527		46,177		104,270		102,077
Other income, net		2,105		2,564		6,726		7,115
Interest expense, net		(5,038)		(5,036)		(14,995)		(15,135)
Income before income taxes		43,594		43,705		96,001		94,057
Income tax provision		(15,714)		(15,351)		(34,943)		(33,946)
Net Income	$	27,880	$	28,354	$	61,058	$	60,111
Earnings Per Share of Common Stock
(basic and diluted)	$	0.80	$	0.82	$	1.76	$	1.73
Dividends per share of common stock	$	0.308	$	0.295	$	0.898	$	0.860
Weighted Average Shares Outstanding
(basic and diluted)		34,668		34,668		34,668		34,668
The accompanying notes are an integral part of the above unaudited consolidated financial statements.

MGE Energy, Inc.

Consolidated Statements of Comprehensive Income (unaudited)

(In thousands)

		Three Months Ended				Nine Months Ended
		September 30,				September 30,
		2016		2015		2016		2015
Net Income	$	27,880	$	28,354	$	61,058	$	60,111
Other comprehensive income, net of tax:
Unrealized gain (loss) on available-for-sale
securities, net of tax (($8) and $56, and $96 and
$120, respectively)		11		(85)		(143)		(180)
Comprehensive Income	$	27,891	$	28,269	$	60,915	$	59,931
The accompanying notes are an integral part of the above unaudited consolidated financial statements.

6

MGE Energy, Inc.

Consolidated Statements of Cash Flows (unaudited)

(In thousands)

		Nine Months Ended
		September 30,
		2016		2015
Operating Activities:
Net income	$	61,058	$	60,111
Items not affecting cash:
Depreciation and amortization		33,358		33,026
Deferred income taxes		15,041		7,370
Provision for doubtful receivables		583		(78)
Employee benefit plan expenses		165		2,500
Equity earnings in ATC		(6,023)		(6,568)
Other items		693		(154)
Changes in working capital items:
Decrease in current assets		33,740		39,034
Decrease in current liabilities		(3,147)		(18,231)
Dividend income from ATC		4,214		4,732
Cash contributions to pension and other postretirement plans		(13,134)		(12,460)
Other noncurrent items, net		2,644		13,373
Cash Provided by Operating Activities		129,192		122,655
Investing Activities:
Capital expenditures		(62,273)		(52,311)
Capital contributions to investments		(2,036)		(785)
Other		(310)		(85)
Cash Used for Investing Activities		(64,619)		(53,181)
Financing Activities:
Cash dividends paid on common stock		(31,115)		(29,816)
Repayment of long-term debt		(3,192)		(3,128)
Repayment of short-term debt		-		(7,000)
Other		(65)		(1,018)
Cash Used for Financing Activities		(34,372)		(40,962)
Change in cash and cash equivalents		30,201		28,512
Cash and cash equivalents at beginning of period		81,384		65,755
Cash and cash equivalents at end of period	$	111,585	$	94,267
Supplemental disclosures of cash flow information:
Significant noncash investing activities:
Accrued capital expenditures	$	10,603	$	3,497
The accompanying notes are an integral part of the unaudited consolidated financial statements.

7

MGE Energy, Inc.

Consolidated Balance Sheets (unaudited)

(In thousands)

		September 30,	December 31,
ASSETS		2016		2015
Current Assets:
Cash and cash equivalents	$	111,585	$	81,384
Accounts receivable, less reserves of $2,815 and $3,052, respectively		40,007		37,112
Other accounts receivable, less reserves of $480 and $642, respectively		6,885		7,477
Unbilled revenues		13,885		25,008
Materials and supplies, at average cost		20,004		19,155
Fossil fuel, at average cost		9,113		13,110
Stored natural gas, at average cost		14,886		16,145
Prepaid taxes		12,617		35,252
Regulatory assets - current		7,207		9,538
Other current assets		13,115		10,570
Total Current Assets		249,304		254,751
Regulatory assets		146,305		148,199
Other deferred assets and other		6,361		6,377
Property, Plant, and Equipment:
Property, plant, and equipment, net		1,243,081		1,217,094
Construction work in progress		38,290		26,351
Total Property, Plant, and Equipment		1,281,371		1,243,445
Investments		76,731		73,631
Total Assets	$	1,760,072	$	1,726,403
LIABILITIES AND CAPITALIZATION
Current Liabilities:
Long-term debt due within one year	$	4,333	$	4,266
Accounts payable		49,961		40,830
Accrued interest and taxes		4,538		5,067
Accrued payroll related items		9,783		11,215
Regulatory liabilities - current		3,564		9,515
Derivative liabilities		8,030		8,343
Other current liabilities		5,950		4,910
Total Current Liabilities		86,159		84,146
Other Credits:
Deferred income taxes		376,194		360,785
Investment tax credit - deferred		973		1,050
Regulatory liabilities		21,959		20,785
Accrued pension and other postretirement benefits		61,825		75,680
Derivative liabilities		42,460		44,935
Other deferred liabilities and other		66,450		61,820
Total Other Credits		569,861		565,055
Capitalization:
Common shareholders' equity		720,258		690,458
Long-term debt		383,794		386,744
Total Capitalization		1,104,052		1,077,202
Commitments and contingencies (see Footnote 7)		-		-
Total Liabilities and Capitalization	$	1,760,072	$	1,726,403
The accompanying notes are an integral part of the above unaudited consolidated financial statements.

8

MGE Energy, Inc.

Consolidated Statements of Common Equity (unaudited)

(In thousands, except per-share amounts)

									Accumulated
					Additional				Other
	Common Stock				Paid-in		Retained		Comprehensive
	Shares		Value		Capital		Earnings		Income/(Loss)		Total
2015
Beginning balance - December 31, 2014	34,668	$	34,668	$	316,268	$	308,007	$	458	$	659,401
Cumulative effect of new accounting principle							(142)				(142)
Beginning balance - Adjusted							307,865				659,259
Net income							60,111				60,111
Other comprehensive loss									(180)		(180)
Common stock dividends declared
($0.860 per share)							(29,816)				(29,816)
Ending balance - September 30, 2015	34,668	$	34,668	$	316,268	$	338,160	$	278	$	689,374
2016
Beginning balance - December 31, 2015	34,668	$	34,668	$	316,268	$	339,165	$	357	$	690,458
Net income							61,058				61,058
Other comprehensive loss									(143)		(143)
Common stock dividends declared
($0.898 per share)							(31,115)				(31,115)
Ending balance - September 30, 2016	34,668	$	34,668	$	316,268	$	369,108	$	214	$	720,258
The accompanying notes are an integral part of the above unaudited consolidated financial statements.

9

Madison Gas and Electric Company

Consolidated Statements of Income (unaudited)

(In thousands)

		Three Months Ended				Nine Months Ended
		September 30,				September 30,
		2016		2015		2016		2015
Operating Revenues:
Electric revenues	$	119,152	$	123,371	$	313,470	$	325,044
Gas revenues		17,576		17,435		92,390		108,039
Total Operating Revenues		136,728		140,806		405,860		433,083
Operating Expenses:
Fuel for electric generation		20,507		17,057		47,574		41,630
Purchased power		9,171		18,488		38,709		62,624
Cost of gas sold		4,320		4,302		43,269		57,879
Other operations and maintenance		40,003		38,561		123,117		120,269
Depreciation and amortization		11,212		11,170		33,334		32,991
Other general taxes		4,846		4,877		14,841		14,951
Income tax provision		14,934		14,401		32,488		31,218
Total Operating Expenses		104,993		108,856		333,332		361,562
Operating Income		31,735		31,950		72,528		71,521
Other Income and Deductions:
AFUDC - equity funds		253		206		777		501
Equity earnings in MGE Transco		1,451		2,398		5,451		6,568
Income tax provision		(606)		(977)		(2,315)		(2,763)
Other income, net		(62)		(73)		(298)		(288)
Total Other Income and Deductions		1,036		1,554		3,615		4,018
Income before interest expense		32,771		33,504		76,143		75,539
Interest Expense:
Interest on long-term debt		5,079		5,123		15,284		15,410
Other interest, net		112		37		163		52
AFUDC - borrowed funds		(82)		(67)		(253)		(163)
Net Interest Expense		5,109		5,093		15,194		15,299
Net Income	$	27,662	$	28,411	$	60,949	$	60,240
Less: Net Income Attributable to Noncontrolling
Interest, net of tax		(5,695)		(6,633)		(17,899)		(19,812)
Net Income Attributable to MGE	$	21,967	$	21,778	$	43,050	$	40,428
The accompanying notes are an integral part of the above unaudited consolidated financial statements.

Madison Gas and Electric Company

Consolidated Statements of Comprehensive Income (unaudited)

(In thousands)

		Three Months Ended				Nine Months Ended
		September 30,				September 30,
		2016		2015		2016		2015
Net Income	$	27,662	$	28,411	$	60,949	$	60,240
Other comprehensive income, net of tax:
Unrealized gain (loss) on available-for-sale
securities, net of tax (($5) and $19, and $21 and
$92, respectively)		8		(28)		(31)		(137)
Comprehensive Income	$	27,670	$	28,383	$	60,918	$	60,103
Less: Comprehensive Income Attributable to
Noncontrolling Interest, net of tax		(5,695)		(6,633)		(17,899)		(19,812)
Comprehensive Income Attributable to MGE	$	21,975	$	21,750	$	43,019	$	40,291
The accompanying notes are an integral part of the above unaudited consolidated financial statements.

10

Madison Gas and Electric Company

Consolidated Statements of Cash Flows (unaudited)

(In thousands)

		Nine Months Ended
		September 30,
		2016		2015
Operating Activities:
Net income	$	60,949	$	60,240
Items not affecting cash:
Depreciation and amortization		33,334		32,991
Deferred income taxes		13,997		4,510
Provision for doubtful receivables		583		(78)
Employee benefit plan expenses		165		2,500
Equity earnings in MGE Transco		(5,451)		(6,568)
Other items		1,056		234
Changes in working capital items:
Decrease in current assets		32,557		46,806
Decrease in current liabilities		(1,783)		(15,876)
Dividend income from MGE Transco		4,214		4,732
Cash contributions to pension and other postretirement plans		(13,134)		(12,460)
Other noncurrent items, net		2,472		13,076
Cash Provided by Operating Activities		128,959		130,107
Investing Activities:
Capital expenditures		(62,273)		(52,311)
Capital contributions to investments		(1,598)		(533)
Other		(536)		(90)
Cash Used for Investing Activities		(64,407)		(52,934)
Financing Activities:
Cash dividends paid to parent by MGE		(40,000)		(20,000)
Distributions to parent from noncontrolling interest		(18,113)		(12,007)
Equity contribution received by noncontrolling interest		1,598		3,053
Repayment of long-term debt		(3,192)		(3,128)
Repayment of short-term debt		-		(7,000)
Other		(47)		(682)
Cash Used for Financing Activities		(59,754)		(39,764)
Change in cash and cash equivalents		4,798		37,409
Cash and cash equivalents at beginning of period		26,760		4,562
Cash and cash equivalents at end of period	$	31,558	$	41,971
Supplemental disclosures of cash flow information:
Significant noncash investing activities:
Accrued capital expenditures	$	10,603	$	3,497
The accompanying notes are an integral part of the unaudited consolidated financial statements.

11

Madison Gas and Electric Company

Consolidated Balance Sheets (unaudited)

(In thousands)

		September 30,	December 31,
ASSETS		2016		2015
Current Assets:
Cash and cash equivalents	$	31,558	$	26,760
Accounts receivable, less reserves of $2,815 and $3,052, respectively		40,007		37,112
Affiliate receivables		565		542
Other accounts receivable, less reserves of $480 and $642, respectively		6,816		7,390
Unbilled revenues		13,885		25,008
Materials and supplies, at average cost		20,004		19,155
Fossil fuel, at average cost		9,113		13,110
Stored natural gas, at average cost		14,886		16,145
Prepaid taxes		12,793		34,279
Regulatory assets - current		7,207		9,538
Other current assets		13,082		10,544
Total Current Assets		169,916		199,583
Affiliate receivable long-term		4,369		4,766
Regulatory assets		146,305		148,199
Other deferred assets and other		4,100		4,216
Property, Plant, and Equipment:
Property, plant, and equipment, net		1,242,459		1,216,415
Construction work in progress		38,290		26,351
Total Property, Plant, and Equipment		1,280,749		1,242,766
Investments		47,259		69,984
Total Assets	$	1,652,698	$	1,669,514
LIABILITIES AND CAPITALIZATION
Current Liabilities:
Long-term debt due within one year	$	4,333	$	4,266
Accounts payable		49,949		40,742
Accrued interest and taxes		5,710		5,021
Accrued payroll related items		9,783		11,215
Regulatory liabilities - current		3,564		9,515
Derivative liabilities		8,030		8,343
Other current liabilities		5,901		4,791
Total Current Liabilities		87,270		83,893
Other Credits:
Deferred income taxes		367,066		352,626
Investment tax credit - deferred		973		1,050
Regulatory liabilities		21,959		20,785
Accrued pension and other postretirement benefits		61,825		75,680
Derivative liabilities		42,460		44,935
Other deferred liabilities and other		66,450		61,817
Total Other Credits		560,733		556,893
Capitalization:
Common shareholder's equity		504,695		501,676
Noncontrolling interest		116,206		140,308
Total Equity		620,901		641,984
Long-term debt		383,794		386,744
Total Capitalization		1,004,695		1,028,728
Commitments and contingencies (see Footnote 7)		-		-
Total Liabilities and Capitalization	$	1,652,698	$	1,669,514
The accompanying notes are an integral part of the above unaudited consolidated financial statements.

12

Madison Gas and Electric Company

Consolidated Statements of Common Equity (unaudited)

(In thousands)

								Accumulated
					Additional				Other		Non-
	Common Stock				Paid-in		Retained	Comprehensive			Controlling
	Shares		Value		Capital		Earnings	Income/(Loss)			Interest		Total
2015
Beginning balance - Dec. 31, 2014	17,348	$	17,348	$	192,417	$	276,662	$	144	$	125,689	$	612,260
Cumulative effect of new accounting principle							(142)						(142)
Beginning balance - Adjusted							276,520						612,118
Net income							40,428				19,812		60,240
Other comprehensive loss									(137)				(137)
Cash dividends paid to parent
by MGE							(20,000)						(20,000)
Equity contribution received by
noncontrolling interest											3,053		3,053
Distributions to parent from
noncontrolling interest											(12,007)		(12,007)
Ending balance - September 30, 2015	17,348	$	17,348	$	192,417	$	296,948	$	7	$	136,547	$	643,267
2016
Beginning balance - Dec. 31, 2015	17,348	$	17,348	$	192,417	$	291,888	$	23	$	140,308	$	641,984
Net income							43,050				17,899		60,949
Other comprehensive loss									(31)				(31)
Cash dividends paid to parent
by MGE							(40,000)						(40,000)
Equity contribution received by
noncontrolling interest											1,598		1,598
Distributions to parent from
noncontrolling interest											(18,113)		(18,113)
Deconsolidation of noncontrolling interest											(25,486)		(25,486)
Ending balance - September 30, 2016	17,348	$	17,348	$	192,417	$	294,938	$	(8)	$	116,206	$	620,901
The accompanying notes are an integral part of the above unaudited consolidated financial statements.

13

MGE Energy, Inc., and Madison Gas and Electric Company

Notes to Consolidated Financial Statements (unaudited)

September 30, 2016

1.

Basis of Presentation - MGE Energy and MGE.

This report is a combined report of MGE Energy and MGE. References in this report to "MGE Energy" are to MGE Energy, Inc. and its subsidiaries. References in this report to "MGE" are to Madison Gas and Electric Company.

MGE Power Elm Road and MGE Power West Campus own electric generating assets and lease those assets to MGE. Both entities are variable interest entities under applicable authoritative accounting guidance. MGE is considered the primary beneficiary of these entities as a result of contractual agreements. As a result, MGE has consolidated MGE Power Elm Road and MGE Power West Campus. See Footnote 2 of Notes to Consolidated Financial Statements under Item 8, Financial Statements and Supplementary Data, of MGE Energy's and MGE's 2015 Annual Report on Form 10-K.

MGE Transco is jointly owned by MGE Energy and MGE. MGE's ownership interest in MGE Transco declined below a majority in July 2016. As a result of the change in majority ownership in MGE Transco in July 2016, MGE deconsolidated MGE Energy's proportionate share of the equity in MGE Transco. The change in consolidation was applied prospectively by reducing its investment and noncontrolling interest on MGE's consolidated financial statements. See Footnote 3 for further discussion.

The accompanying consolidated financial statements as of September 30, 2016, and for the three and nine months ended, are unaudited, but include all adjustments that MGE Energy and MGE management consider necessary for a fair statement of their respective financial statements. All adjustments are of a normal, recurring nature except as otherwise disclosed. The year-end consolidated balance sheet information was derived from the audited balance sheet appearing in MGE Energy's and MGE's 2015 Annual Report on Form 10-K, but does not include all disclosures required by accounting principles generally accepted in the United States of America. These notes should be read in conjunction with the financial statements and the notes on pages 55 through 105 of the 2015 Annual Report on Form 10-K.

2.

Equity and Financing Arrangements - MGE Energy.

a.

Common Stock.

MGE Energy sells shares of its common stock through its Stock Plan. Those shares may be newly issued shares or shares that MGE Energy has purchased in the open market for resale to participants in the Stock Plan. All sales under the Stock Plan are covered by a shelf registration statement that MGE Energy filed with the SEC. For both the nine months ended September 30, 2016 and 2015, MGE Energy did not issue any new shares of common stock under the Stock Plan.

b.

Dilutive Shares Calculation.

MGE Energy does not have any dilutive securities.

c.

Long-term Debt - MGE Energy and MGE.

MGE has $30 million of medium-term notes maturing in 2017. MGE priced $40 million of new long-term unsecured debt in October 2016, with funding expected to occur in mid-January 2017. The new debt will carry an interest rate of 3.76% per annum over its 35-year term. The proceeds of this debt financing will be used to refinance the maturing $30 million medium-term notes and assist with the financing of additional capital expenditures. The covenants of this debt are expected to be substantially consistent with MGE's existing unsecured long-term debt. In accordance with applicable accounting guidance, MGE has classified the $30 million of maturing medium-term notes as long-term debt on the consolidated balance sheets for the quarter ended September 30, 2016.

14

3.

Investment in ATC - MGE Energy and MGE.

ATC owns and operates electric transmission facilities primarily in Wisconsin. MGE received an interest in ATC when it, like other Wisconsin electric utilities, contributed its electric transmission facilities to ATC as required by Wisconsin law. That interest is presently held by MGE Transco, which is jointly owned by MGE Energy and MGE.

MGE Transco has accounted for its investment in ATC under the equity method of accounting. For the three and nine months ended September 30, 2016 and 2015, MGE Transco recorded the following:

		Three Months Ended				Nine Months Ended
		September 30,				September 30,
(In thousands)		2016		2015		2016		2015
Equity earnings from investment in ATC	$	2,023	$	2,398	$	6,023	$	6,568
Dividends received from ATC		1,486		1,841		4,214		4,732
Capital contributions to ATC		888		177		1,598		533

MGE Transco's investment in ATC as of September 30, 2016, and December 31, 2015, was $72.9 million and $69.5 million, respectively. As of September 30, 2016, MGE's investment in MGE Transco was $46.8 million.

At September 30, 2016, MGE Energy, the holding company, is the majority owner (50.5%), and MGE is the minority owner (49.5%) of MGE Transco. MGE's ownership interest declined below a majority in July 2016 as a result of continued funding of ATC capital contributions by MGE Energy. As a result of the change in majority ownership in MGE Transco in July 2016, MGE deconsolidated MGE Energy's proportionate share of the equity in MGE Transco. The change in consolidation was applied prospectively by reducing its investment and noncontrolling interest on MGE's consolidated financial statements. No gain or loss was recognized in July 2016 due to MGE ceasing to have a controlling financial interest. As of December 31, 2015, the noncontrolling interest on MGE's consolidated balance sheets was $23.6 million. For the three and nine months ended September 30, 2016 and 2015, MGE recorded the following amounts attributable to noncontrolling interest in MGE Transco:

		Three Months Ended				Nine Months Ended
		September 30,				September 30,
(In thousands)		2016		2015		2016		2015
Equity earnings from investment(a)	$	254	$	679	$	1,410	$	1,848
Dividends received from investment(a)		561		423		1,113		1,007
Capital contributions by noncontrolling interest		888		177		1,598		533

(a) Amounts reflected net of tax.

In June 2016, the PSCW accepted a staff recommendation to have MGE transfer its interest in ATC to MGE Energy. As a result, MGE's ownership interest in MGE Transco will be completely eliminated in favor of MGE Energy when the transfers are complete, which is required by December 31, 2022. The recommendation arose in the context of requests for regulatory approvals by several owners of ATC in connection with a reorganization of ATC designed to separate its existing Wisconsin-based transmission operations from its non-Wisconsin transmission development activities. The change will have no effect on MGE Energy's consolidated financial statements.

ATC's summarized financial data for the three and nine months ended September 30, 2016 and 2015, is as follows:

		Three Months Ended				Nine Months Ended
		September 30,				September 30,
(In thousands)		2016		2015		2016		2015
Operating revenues	$	158,126	$	164,515	$	476,591	$	482,043
Operating expenses		(80,271)		(78,059)		(241,034)		(238,336)
Other income, net		1,128		585		2,563		566
Interest expense, net		(24,624)		(23,655)		(73,714)		(72,310)
Earnings before members' income taxes	$	54,359	$	63,386	$	164,406	$	171,963

15

MGE receives transmission and other related services from ATC. During the three and nine months ended September 30, 2016, MGE recorded $7.4 million and $22.1 million, respectively, for transmission services received compared to $7.0 million and $21.1 million for the comparable periods in 2015. MGE also provides a variety of operational, maintenance, and project management services for ATC, which is reimbursed by ATC. As of September 30, 2016, and December 31, 2015, MGE had a receivable due from ATC of $0.3 million and $0.2 million, respectively.

4.

Taxes - MGE Energy and MGE.

MGE Energy's effective income tax rates for the three and nine months ended September 30, 2016, were 36.1% and 36.4%, respectively, compared to 35.1% and 36.1% for the same periods in 2015. MGE's effective income tax rates for the three and nine months ended September 30, 2016, were 36.0% and 36.4%, respectively, compared to 35.1% and 36.1% for the same periods in 2015. The increase in the effective tax rates is due in part to a lower estimated domestic manufacturing deduction offset by higher estimated AFUDC equity earnings in 2016.

5.

Pension and Other Postretirement Plans - MGE Energy and MGE.

MGE maintains qualified and nonqualified pension plans, health care, and life insurance benefits. Additionally, MGE has defined contribution 401(k) benefit plans. MGE refined its methodology for using discount rates to measure the components of net periodic benefit cost for 2016. The refined methodology uses individual spot rates, instead of a weighted average of the yield curve spot rates, for measuring the service cost and interest cost components.

The following table presents the components of MGE Energy's and MGE's net periodic benefit costs recognized for the three and nine months ended September 30, 2016 and 2015. A portion of the net periodic benefit cost is capitalized within the consolidated balance sheets.

		Three Months Ended				Nine Months Ended
		September 30,				September 30,
(In thousands)		2016		2015		2016		2015
Pension Benefits
Components of net periodic cost:
Service cost	$	1,413	$	1,878	$	4,358	$	5,715
Interest cost		3,161		3,594		9,744		10,936
Expected return on assets		(5,724)		(5,930)		(17,646)		(18,045)
Amortization of:
Prior service cost		3		6		8		18
Actuarial loss		1,388		1,393		4,278		4,240
Net periodic cost	$	241	$	941	$	742	$	2,864
Postretirement Benefits
Components of net periodic (benefit) cost:
Service cost	$	361	$	194	$	1,084	$	580
Interest cost		753		392		2,258		1,176
Expected return on assets		(787)		(355)		(2,360)		(1,063)
Amortization of:
Transition obligation		1		-		3		1
Prior service benefit		(744)		(337)		(2,233)		(1,009)
Actuarial loss		178		133		533		397
Net periodic (benefit) cost	$	(238)	$	27	$	(715)	$	82

6.

Share-Based Compensation - MGE Energy and MGE.

Under MGE Energy's Performance Unit Plan and the Director Incentive Plan, eligible employees and non-employee directors may receive performance units that entitle the holder to receive a cash payment equal to the value of a designated number of shares of MGE Energy's common stock, plus dividend equivalent payments thereon, at the end of the set performance period.

In January 2016, 3,773 units were granted under the Director Incentive Plan and are subject to a three-year graded vesting schedule. In February 2016, 19,055 units were granted under the Performance Unit Plan and are subject to a five-year graded vesting schedule. On the grant date, MGE Energy and MGE measure the cost of the

16

employee services received in exchange for a performance unit award based on the current market value of MGE Energy common stock. The fair value of the awards is re-measured quarterly, including at September 30, 2016, as required by applicable accounting standards. Changes in fair value as well as the original grant are recognized as compensation cost. Since this amount is re-measured throughout the vesting period, the compensation cost is subject to variability.

For nonretirement eligible employees under the Performance Unit Plan, stock based compensation costs are accrued and recognized using the graded vesting method. Compensation cost for retirement eligible employees or employees that will become retirement eligible during the vesting schedule are recognized on an abridged horizon.

During the three and nine months ended September 30, 2016, MGE recorded $0.2 million and $2.0 million, respectively, in compensation expense as a result of awards under the plans compared to $0.3 million and $0.4 million for the comparable periods in 2015. In January 2016, cash payments of $1.2 million were distributed relating to awards that were granted in 2011. During the nine months ended September 30, 2015, MGE recorded a $0.2 million gain on 4,676 units forfeited. No forfeitures occurred during the nine months ended September 30, 2016. At September 30, 2016, $5.8 million of outstanding awards are vested, and of this amount, no cash settlements have occurred.

7.

Commitments and Contingencies - MGE Energy and MGE.

a.

Environmental.

MGE Energy and MGE are subject to frequently changing local, state, and federal regulations concerning air quality, water quality, land use, threatened and endangered species, hazardous materials handling, and solid waste disposal. These regulations affect the manner in which we conduct our operations, the costs of those operations, as well as capital and operating expenditures. Regulatory initiatives, proposed rules, and court challenges to adopted rules, have the potential to have a material effect on our capital expenditures and operating costs. These initiatives, proposed rules, and court challenges include:

EPA's Effluent Limitations Guidelines (ELG) and Standards for Steam Electric Power Generating Point Source Category

In November 2015, the EPA published its final rule setting Effluent Limitations Guidelines (ELG) for the steam electric power generating industry. The ELG rule establishes federal limits on the amount of metals and other pollutants that can be discharged in wastewater from new and existing steam electric generation plants. The ELG rule mostly covers pollutants that are captured by certain air pollution control systems and via wet ash handling systems at coal-burning power plants with units greater than 50 MW generation capacity. The operators of our Columbia and Elm Road Units have indicated that equipment upgrades may be necessary to comply with the new discharge standards. The rule will be applied to Wisconsin-based power plants as they renew their WPDES permits, beginning in 2018 but no later than 2023. Management believes that any compliance costs will be recovered in future rates based on previous treatment of environmental compliance projects.

EPA Cooling Water Intake Rules (Section 316(b))

Section 316(b) of the Clean Water Act requires that the cooling water intake structures at electric power plants meet best available technology standards so that mortality from entrainment (drawing aquatic life into a plant's cooling system) and impingement (trapping aquatic life on screens) are reduced. The EPA finalized its 316(b) rule for existing facilities in 2014. Section 316(b) requirements are implemented in Wisconsin through modifications to plants' WPDES permits, which govern plant wastewater discharges. WDNR is currently developing rules to implement the EPA 316(b) rule.

Our WCCF, Blount, and Columbia plants are considered existing plants under this rule. Our WCCF facility already employs a system that meets the 316(b) rule. Our Blount plant has conducted studies showing that it will likely be in compliance with this rule when its WPDES permit is renewed in 2017. The operator of our Columbia plant is conducting an intake study to demonstrate compliance with the 316(b) rule and/or identify design criteria needed to meet the new rule requirements prior to Columbia's 2017 WPDES permit renewal. The exact requirements at Blount and Columbia, however, will not be known until the WDNR finalizes its rule, approves the plant operators' approach, and those sites' WPDES permits are modified to account for this rule. Nonetheless, MGE expects that the 316(b) rule will not have material effects on its existing plants.

17

EPA's Greenhouse Gas (GHG) Reduction Guidelines under the Clean Air Act 111(d) Rule

In October 2015, the EPA published its Clean Power Plan (CPP) rule with an effective date of December 2015, setting guidelines and approval criteria for states to use in developing plans to control GHG emissions from existing fossil fuel-fired electric generating units (EGUs) and systems. In October 2015, the EPA also published a proposed federal implementation plan under the CPP rule. The proposed federal implementation plan is designed to provide mass-based and rate-based emissions trading options to serve as a model and/or resource for states that are adopting their own plans, or for use by the EPA in states that do not implement their own plans under the finalized CPP. Implementation of the rule is expected to have a direct impact on existing coal and natural gas fired generating units, including possible changes in dispatch and additional operating costs.

On February 9, 2016, the U.S. Supreme Court issued a stay blocking implementation of the CPP pending the Court's own review. The CPP may not be implemented until the Supreme Court lifts the stay, presumably after the courts ultimately resolve the underlying legality of the rule. Oral arguments were held before the D.C. Circuit on September 27, 2016, and a decision by the D.C. Circuit is expected in 2017.

Given the pending legal proceedings and the need for a yet-to-be-developed state implementation plan or finalization of the federal implementation plan, the nature and timing of any final requirements is subject to uncertainty. If the rule remains substantially in its present form, it is expected to have a material impact on MGE.

National Ambient Air Quality Standards (NAAQS)

The EPA's NAAQS regulations set ambient levels of six pollutants to protect sensitive populations (primary NAAQS) and the environment (secondary NAAQS) from the negative effects of exposure to these pollutants at higher levels. MGE is following EPA's efforts to update several NAAQS, including for particulate matter, nitrogen dioxide, sulfur dioxide, and ozone. Further discussion on ozone, sulfur dioxide, and nitrogen dioxide NAAQS follows. For additional information on the NAAQS process, see Footnote 18.c. of Notes to Consolidated Financial Statements under Item 8, Financial Statements and Supplementary Data, of MGE Energy's and MGE's 2015 Annual Report on Form 10-K.

Ozone NAAQS

In October 2015, the EPA revised the primary and secondary ozone NAAQS, lowering each to 70 ppb. The rule became effective in December 2015. Based on current ozone monitoring data, it appears that Milwaukee County (where our Elm Road Units are located) will likely not attain the lowered standards, and Dane and Columbia Counties (where our WCCF/Blount and Columbia Units are located, respectively) may attain them. Final attainment designations for these three counties will be based upon air monitoring data for years 2014-2016. The EPA will finalize the designations by October 1, 2017 based on air monitoring data for the years 2014-2016. Once these EPA designations are complete, the State of Wisconsin will need to develop implementation plans for each county designated as nonattainment, which could affect operations and emission control obligations for plants located within the nonattainment counties. The State of Wisconsin has joined a lawsuit filed by several states challenging the EPA's new ozone standard, alleging that the new standard is not attainable and the EPA is not properly considering background levels in setting its ozone attainment levels. MGE will continue to monitor the EPA's progress on attainment designations and related litigation to assess potential impacts at our facilities, particularly our Elm Road Units.

Sulfur Dioxide (SO₂) NAAQS

In March 2015, the EPA identified MGE's Columbia Plant in Columbia County as a large stationary source of SO₂ that may exceed the one hour SO₂ NAAQS standard and was subject to a State of Wisconsin proposed county attainment/nonattainment determination. In September 2015, Wisconsin sent a letter to the EPA proposing that Columbia County be designated as being in attainment for the SO₂ NAAQS based on recent modeling demonstrating that SO₂ pollution controls on the Columbia Plant had brought the county into attainment. In June 2016, the EPA issued a final rule classifying Columbia County as an unclassified/attainment area. In addition to the EPA's actions on the SO₂ NAAQS, the WDNR has revised its state rules to incorporate the one hour SO₂ standard. MGE does not anticipate any material costs from this rule.

18

Nitrogen Dioxide (NO₂) NAAQS

The WDNR has revised its state rules to incorporate the EPA's one hour NO₂ NAAQS rule that was finalized in 2010. The effective date of the state rule was August 1, 2016. The WDNR is currently seeking input from the public on ideas for implementing this one-hour standard. Wisconsin's NO₂ NAAQS rule will affect our stationary fossil-fuel generation sources by requiring that we demonstrate consistency with the NAAQS when applying for certain air permits. Sources that cannot demonstrate compliance with the NAAQS may be required to install emission controls or restrict operations. MGE will continue to monitor developments while the WDNR implements guidance for compliance with the one-hour NAAQS.

EPA's Cross-State Air Pollution Rule: Proposed Ozone Season Update based on 2008 Ozone NAAQS

The EPA's Cross-State Air Pollution Rule (CSAPR) is an interstate air pollution transport rule designed to reduce ozone and fine particulate (PM2.5) air levels in areas that the EPA has determined are being affected by pollution from neighboring and upwind states. This is accomplished in the CSAPR through a reduction in SO₂ and Nitrogen Oxides (NO_x) from fossil-fuel fired power plants. NO_x and SO₂ contribute to fine particulate pollution, and NO_x contributes to ozone formation. Reductions are achieved through a cap and trade system. Individual plants can meet their caps through modifications and/or buying allowances on the market.

In October 2016, the EPA finalized an update to the existing CSAPR. The CSAPR Rule Update is designed to incorporate 2008 Ozone NAAQS attainment levels (the original CSAPR is based on 1997 Ozone NAAQS levels) in 22 states, including Wisconsin, by further limiting ozone season NO_x levels through a reduction in NO_x allowances. The rule also includes revisions to CSAPR that are designed to address issues remaining from the D.C. Circuit remand of CSAPR, including Wisconsin's inclusion in the NO_x ozone season portion of the rule.

The rule will further reduce summertime (or Ozone Season) NO_x emissions from power plants starting in 2017. Initial review of this rule shows that we will likely need to buy NO_x Ozone Season allowances to comply with the rule. MGE is still evaluating the impact of this final rule on our operations, and we are unable to determine the full extent of the rule's impacts at this time. Depending on the cost of allowances, this requirement could be material for MGE.

Clean Air Visibility Rule (CAVR)

Columbia may be subject to the best available retrofit technology (BART) regulations, a subsection of the EPA's Clean Air Visibility Rule (CAVR), which may require pollution control retrofits. Columbia's pollution control upgrades and the EPA's stance that compliance with the CSAPR equals compliance with BART should mean that Columbia will not need to do additional work to meet BART requirements. In February 2016, the EPA submitted a proposed revision to the CAVR. The proposed revision would move state plan due dates from July 2018 to July 2021. This would allow for states to coordinate their CAVR compliance with other compliance efforts. If this proposed revision is finalized, it would reduce the chances that CAVR would be material for MGE. At this time, however, the BART regulatory obligations, compliance strategies, and costs remain uncertain due to the continued legal challenges surrounding CSAPR and CAVR.

Solid Waste

EPA's Coal Combustion Residuals Rule

In December 2014, the EPA finalized its Disposal of Coal Combustion Residuals from Electric Utilities (CCR) rule. The rule became effective in October 2015. It provides that coal ash will be regulated as a solid waste, and defines what ash use activities would be considered generally exempt beneficial reuse of coal ash. The rule also regulates landfills, ash ponds, and other surface impoundments for coal combustion residuals by regulating their design, location, monitoring, and operation. This portion of the rule is accomplished in phases to allow for sites with onsite storage and/or disposal to evaluate their compliance with the rule's design criteria. Landfills and impoundments that cannot meet design criteria will need to close formally within defined timeframes.

The Columbia and Elm Road Units co-owners and plant operators are working through the phased requirements to plan and implement changes necessary at those facilities to meet design criteria. Review of our Elm Road facility has indicated that the costs to comply with this rule are not expected to be significant. Columbia's operator has developed a preliminary implementation schedule for meeting the various deadlines

19

spelled out in the rule. Costs at Columbia will be dependent on what is determined during the evaluation stage. Management believes compliance costs will be recovered in future rates based on previous treatment of environmental compliance projects.

b.

Legal Matters.

MGE is involved in various legal matters that are being defended and handled in the normal course of business. MGE maintains accruals for such costs that are probable of being incurred and subject to reasonable estimation. The accrued amount for these matters is not material to the financial statements. MGE does not expect the resolution of these matters to have a material adverse effect on its consolidated results of operations, financial condition, or cash flows.

c.

Purchase Contracts.

MGE Energy and MGE have entered into various commodity supply, transportation, and storage contracts to meet their obligations to deliver electricity and natural gas to customers. As of September 30, 2016, the future commitments related to these purchase contracts were as follows:

(In thousands)		2016		2017		2018		2019		2020		Thereafter
Coal(a)	$	23,260	$	16,535	$	12,640	$	3,850	$	-	$	-
Natural gas
Transportation & storage(b)		6,005		20,858		20,644		19,482		15,225		31,767
Supply(c)		11,661		12,580		-		-		-		-
	$	40,926	$	49,973	$	33,284	$	23,332	$	15,225	$	31,767

(a)

Total coal commitments for the Columbia and Elm Road Units, including transportation. Fuel procurement for MGE's jointly owned Columbia and Elm Road Units is handled by WPL and WEPCO, respectively, who are the operators of those facilities. If any minimum purchase obligations must be paid under these contracts, management believes these obligations would be considered costs of service and recoverable in rates.

(b)

MGE's natural gas transportation and storage contracts require fixed monthly payments for firm supply pipeline transportation and storage capacity. The pricing components of the fixed monthly payments for the transportation and storage contracts are established by FERC but may be subject to change. Management expects to recover these costs in future customer rates.

(c)

These commitments include market-based pricing. Management expects to recover these costs in future customer rates.

8.

Derivative and Hedging Instruments - MGE Energy and MGE.

a.

Purpose.

As part of its regular operations, MGE enters into contracts, including options, swaps, futures, forwards, and other contractual commitments, to manage its exposure to commodity prices. To the extent that these contracts are derivatives, MGE assesses whether or not the normal purchases or normal sales exclusion applies. For contracts to which this exclusion cannot be applied, MGE Energy and MGE recognize such derivatives in the consolidated balance sheets at fair value. MGE's financial commodity derivative activities are conducted in accordance with its electric and gas risk management program, which is approved by the PSCW and limits the volume MGE can hedge with specific risk management strategies. The maximum length of time over which cash flows related to energy commodities can be hedged is four years. If the derivative qualifies for regulatory deferral, the derivatives are marked to fair value and are offset with a corresponding regulatory asset or liability. The deferred gain or loss is recognized in earnings in the delivery month applicable to the instrument. Gains and losses related to hedges qualifying for regulatory treatment are recoverable in gas rates through the PGA or in electric rates as a component of the fuel rules mechanism.

20

b.

Notional Amounts.

The gross notional volume of open derivatives is as follows:

	September 30, 2016	December 31, 2015
Commodity derivative contracts	465,835 MWh	355,580 MWh
Commodity derivative contracts	6,157,500 Dth	5,037,500 Dth
FTRs	3,567 MW	2,000 MW

c.

Financial Statement Presentation.

MGE purchases and sells exchange-traded and over-the-counter options, swaps, and future contracts. These arrangements are primarily entered into to help stabilize the price risk associated with gas or power purchases. These transactions are employed by both MGE's gas and electric segments. Additionally, as a result of the firm transmission agreements that MGE holds on electricity transmission paths in the MISO market, MGE holds FTRs. An FTR is a financial instrument that entitles the holder to a stream of revenues or charges based on the differences in hourly day-ahead energy prices between two points on the transmission grid. The fair values of these instruments are offset with a corresponding regulatory asset/liability depending on whether they are in a net loss/gain position. Depending on the nature of the instrument, the gain or loss associated with these transactions will be reflected as cost of gas sold, fuel for electric generation, or purchased power expense in the delivery month applicable to the instrument. At September 30, 2016, the fair value of exchange traded derivatives and FTRs exceeded their cost basis by $0.9 million. At December 31, 2015, the cost basis of exchange traded derivatives and FTRs exceeded their fair value by $0.8 million.

MGE is a party to a purchased power agreement that provides MGE with firm capacity and energy during a base term from June 1, 2012, through May 31, 2022. The agreement also allows MGE an option to extend the contract after the base term. The agreement is accounted for as a derivative contract and is recognized at its fair value on the consolidated balance sheets. However, the derivative qualifies for regulatory deferral and is recognized with a corresponding regulatory asset or liability depending on whether the fair value is in a loss or gain position. The fair value of the contract at September 30, 2016, and December 31, 2015, reflects a loss position of $50.5 million and $53.3 million, respectively. The actual cost will be recognized in purchased power expense in the month of purchase.

The following table summarizes the fair value of the derivative instruments on the consolidated balance sheets. All derivative instruments in this table are presented on a gross basis and are calculated prior to the netting of instruments with the same counterparty under a master netting agreement as well as the netting of collateral. For financial statement purposes, MGE Energy and MGE have netted instruments with the same counterparty under a master netting agreement as well as the netting of collateral. As of September 30, 2016, and December 31, 2015, MGE Energy and MGE had a receivable – margin account balance of $1.6 million and $2.3 million, respectively, which is shown net of any collateral posted against derivative positions.

	Asset Derivatives			Liability Derivatives
(In thousands)	Balance Sheet Location		Fair Value	Balance Sheet Location		Fair Value
September 30, 2016
Commodity derivative contracts	Other current assets	$	1,023	Derivative liability (current)	$	351
Commodity derivative contracts	Other deferred charges		114	Derivative liability (long-term)		97
FTRs	Other current assets		230	Derivative liability (current)		-
PPA	N/A		N/A	Derivative liability (current)		8,030
PPA	N/A		N/A	Derivative liability (long-term)		42,460
December 31, 2015
Commodity derivative contracts	Other current assets	$	146	Derivative liability (current)	$	1,266
Commodity derivative contracts	Other deferred charges		144	Derivative liability (long-term)		70
FTRs	Other current assets		234	Derivative liability (current)		-
PPA	N/A		N/A	Derivative liability (current)		8,340
PPA	N/A		N/A	Derivative liability (long-term)		44,930

21

The following tables show the effect of netting arrangements for recognized derivative assets and liabilities that are subject to a master netting arrangement or similar arrangement on the consolidated balance sheets.

Offsetting of Derivative Assets
(In thousands)		Gross Amounts		Gross Amounts Offset in Balance Sheets		Collateral Posted Against Derivative Positions		Net Amount Presented in Balance Sheets
September 30, 2016
Commodity derivative contracts	$	1,137	$	(448)	$	-	$	689
FTRs		230		-		-		230
December 31, 2015
Commodity derivative contracts	$	290	$	(290)	$	-	$	-
FTRs		234		-		-		234

Offsetting of Derivative Liabilities
(In thousands)		Gross Amounts		Gross Amounts Offset in Balance Sheets		Collateral Posted Against Derivative Positions		Net Amount Presented in Balance Sheets
September 30, 2016
Commodity derivative contracts	$	448	$	(448)	$	-	$	-
PPA		50,490		-		-		50,490
December 31, 2015
Commodity derivative contracts	$	1,336	$	(290)	$	(1,038)	$	8
PPA		53,270		-		-		53,270

The following tables summarize the unrealized and realized gains (losses) related to the derivative instruments on the consolidated balance sheets at September 30, 2016 and 2015, and the consolidated income statements for the three and nine months ended September 30, 2016 and 2015.

		2016				2015
(In thousands)		Current and Long-Term Regulatory Asset		Other Current Assets		Current and Long-Term Regulatory Asset		Other Current Assets
Three Months Ended September 30:
Balance at July 1,	$	50,521	$	659	$	56,048	$	455
Unrealized (gain) loss		(663)		-		4,036		-
Realized gain (loss) reclassified to a deferred account		17		(17)		(408)		408
Realized (loss) gain reclassified to income statement		(304)		46		(2,278)		(91)
Balance at September 30,	$	49,571	$	688	$	57,398	$	772
Nine Months Ended September 30:
Balance at January 1,	$	54,082	$	1,208	$	54,998	$	1,001
Unrealized loss		1,128		-		8,514		-
Realized (loss) gain reclassified to a deferred account		(1,417)		1,417		(1,700)		1,700
Realized (loss) gain reclassified to income statement		(4,222)		(1,937)		(4,414)		(1,929)
Balance at September 30,	$	49,571	$	688	$	57,398	$	772

22

		Realized Losses (Gains)
		2016				2015
(In thousands)		Fuel for Electric Generation/ Purchased Power		Cost of Gas Sold		Fuel for Electric Generation/ Purchased Power		Cost of Gas Sold
Three Months Ended September 30:
Commodity derivative contracts	$	45	$	-	$	862	$	(17)
FTRs		(703)		-		(233)		-
PPA		916		-		1,757		-
Nine Months Ended September 30:
Commodity derivative contracts	$	1,469	$	1,814	$	1,860	$	1,742
FTRs		(635)		-		(607)		-
PPA		3,511		-		3,348		-

MGE's commodity derivative contracts, FTRs, and PPA are subject to regulatory deferral. These derivatives are marked to fair value and are offset with a corresponding regulatory asset or liability. Realized gains and losses are deferred on the consolidated balance sheets and are recognized in earnings in the delivery month applicable to the instrument. As a result of the above described treatment, there are no unrealized gains or losses that flow through earnings.

The PPA has a provision that may require MGE to post collateral if MGE's debt rating falls below investment grade (i.e., below BBB-). The amount of collateral that it may be required to post varies from $20.0 million to $40.0 million, depending on MGE's nominated capacity amount. As of September 30, 2016, no collateral is required to be, or has been, posted. Certain counterparties extend MGE a credit limit. If MGE exceeds these limits, the counterparties may require collateral to be posted. As of September 30, 2016, no counterparties were in a net liability position. As of December 31, 2015, certain counterparties were in a net liability position of less than $0.1 million.

Nonperformance of counterparties to the non-exchange traded derivatives could expose MGE to credit loss. However, MGE enters into transactions only with companies that meet or exceed strict credit guidelines, and it monitors these counterparties on an ongoing basis to mitigate nonperformance risk in its portfolio. As of September 30, 2016, no counterparties have defaulted.

9.

Rate Matters - MGE Energy and MGE.

a.

Rate Proceedings.

In April 2016, MGE filed an application with the PSCW requesting a 1.7% increase to electric rates and a 3.7% increase to gas rates for 2017. The proposed electric and gas rate increases cover costs primarily associated with the state's electric transmission and MGE's natural gas system infrastructure improvements.

In July 2015, the PSCW approved MGE's request to extend the current accounting treatment for transmission related costs through 2016, conditioned upon MGE not filing a base rate case for 2016. This accounting treatment allows MGE to reflect any differential between transmission costs reflected in rates and actual costs incurred in its next rate case filing, which occurred as part of the April 2016 filing.

On December 23, 2014, the PSCW authorized MGE to increase 2015 rates for retail electric customers by 3.8% or $15.4 million and to decrease gas rates by 2.0% or $3.8 million. The increase in retail electric rates cover costs associated with the construction of emission-reduction equipment at Columbia, improvements and reliability of the state's electric transmission system, fuel and purchased power related to coal delivery costs, partially offset by lower cost as a result of market conditions for pension and postretirement benefit costs. The authorized return on common stock equity was 10.2%.

The PSCW also approved changes to customer rates and rate design for gas service that became effective January 1, 2015. Gas rate design consists of a fixed monthly customer charge and a variable charge tied to actual usage, in addition to the separate charge through the PGA for natural gas commodity costs. The change shifted more of the rate recovery to the monthly charge, reflecting the related fixed costs of providing gas services, and reduced the variable usage-based charge. Thus, gas net income is expected to be more evenly distributed during the year and less sensitive to weather.

23

b.

Fuel Rules.

Fuel rules require the PSCW and Wisconsin utilities to defer electric fuel-related costs that fall outside a symmetrical cost tolerance band around the amount approved for a utility in its annual fuel proceedings. Any over/under recovery of the actual costs is determined on an annual basis and is adjusted in future billings to electric retail customers. The fuel rules bandwidth is currently set at plus or minus 2%. Under fuel rules, MGE would defer costs, less any excess revenues, if its actual electric fuel costs exceeded 102% of the electric fuel costs allowed in its latest rate order. Excess revenues are defined as revenues in the year in question that provide MGE with a greater return on common equity than authorized by the PSCW in MGE's latest rate order. Conversely, MGE is required to defer the benefit of lower costs if actual electric fuel costs were less than 98% of the electric fuel costs allowed in that order.

In August 2015, the PSCW approved a $0.00256/kWh fuel credit that began on September 1, 2015, and will continue throughout 2016. The fuel credit established a mechanism to return $10.9 million of fuel savings to electric customers as a bill credit. MGE returned $2.6 million of electric fuel-related savings to customers through bill credits during the period from September 1, 2015, through December 31, 2015. MGE returned $6.3 million of electric fuel-related savings during the nine months ended September 30, 2016.

In January 2016, the PSCW lowered MGE's 2016 fuel rules monitored costs by $14.8 million as a result of continued lower projected fuel costs in 2016. Also, in March 2016, MGE filed its 2015 fuel plan reconciliation application showing an overcollection of 2015 fuel rules monitored costs. In July 2016, the PSCW issued a final order stating that MGE shall refund the additional fuel savings incurred during 2015 and 2016 for a total of $15.7 million to its retail electric customers over a one-month period. In September 2016, MGE returned $15.5 million to customers through bill credits.

As of September 30, 2016, MGE has deferred $4.1 million of 2016 fuel savings that were in excess of the fuel savings included within the fuel credits referenced above. These costs will be subject to the PSCW's annual review of 2016 fuel costs, expected to be completed in 2017.

10.

Fair Value of Financial Instruments - MGE Energy and MGE.

Fair value is defined as the price that would be received to sell an asset or would be paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants at the measurement date. The accounting standard clarifies that fair value should be based on the assumptions market participants would use when pricing the asset or liability including assumptions about risk. The standard also establishes a three level fair value hierarchy based upon the observability of the assumptions used and requires the use of observable market data when available. The levels are:

Level 1 - Pricing inputs are quoted prices within active markets for identical assets or liabilities.

Level 2 - Pricing inputs are quoted prices within active markets for similar assets or liabilities; quoted prices for identical or similar instruments in markets that are not active; and model-derived valuations that are correlated with or otherwise verifiable by observable market data.

Level 3 - Pricing inputs are unobservable and reflect management's best estimate of what market participants would use in pricing the asset or liability.

a.

Fair Value of Financial Assets and Liabilities Recorded at the Carrying Amount.

At September 30, 2016, and December 31, 2015, the carrying amount of cash, cash equivalents, and outstanding commercial paper approximates fair market value due to the short maturity of those investments and obligations. The estimated fair market value of MGE Energy's and MGE's long-term debt is based on quoted market prices for similar financial instruments at September 30, 2016, and December 31, 2015. Since long-term debt is not traded in an active market, it is classified as Level 2.

24

The estimated fair market values of financial instruments are as follows:

		September 30, 2016				December 31, 2015
(In thousands)		Carrying Amount		Fair Value		Carrying Amount		Fair Value
MGE Energy
Assets:
Cash and cash equivalents	$	111,585	$	111,585	$	81,384	$	81,384
Liabilities:
Long-term debt(a)		392,316		463,849		395,508		435,767
MGE
Assets:
Cash and cash equivalents	$	31,558	$	31,558	$	26,760	$	26,760
Liabilities:
Long-term debt(a)		392,316		463,849		395,508		435,767
(a) Includes long-term debt due within one year. Excludes debt issuance costs and unamortized discount of $4.2 million and $4.5 million at September 30, 2016, and December 31, 2015, respectively.

b.

Recurring Fair Value Measurements.

The following table presents the balances of assets and liabilities measured at fair value on a recurring basis.

		Fair Value as of September 30, 2016
(In thousands)		Total		Level 1		Level 2		Level 3
MGE Energy
Assets:
Derivatives	$	1,367	$	917	$	-	$	450
Exchange-traded investments		520		520		-		-
Total Assets	$	1,887	$	1,437	$	-	$	450
Liabilities:
Derivatives	$	50,938	$	59	$	-	$	50,879
Deferred compensation		2,963		-		2,963		-
Total Liabilities	$	53,901	$	59	$	2,963	$	50,879
MGE
Assets:
Derivatives	$	1,367	$	917	$	-	$	450
Exchange-traded investments		97		97		-		-
Total Assets	$	1,464	$	1,014	$	-	$	450
Liabilities:
Derivatives	$	50,938	$	59	$	-	$	50,879
Deferred compensation		2,963		-		2,963		-
Total Liabilities	$	53,901	$	59	$	2,963	$	50,879

25

		Fair Value as of December 31, 2015
(In thousands)		Total		Level 1		Level 2		Level 3
MGE Energy
Assets:
Derivatives	$	234	$	-	$	-	$	234
Exchange-traded investments		759		759		-		-
Total Assets	$	993	$	759	$	-	$	234
Liabilities:
Derivatives(b)	$	54,316	$	581	$	-	$	53,735
Deferred compensation		3,145		-		3,145		-
Total Liabilities	$	57,461	$	581	$	3,145	$	53,735
MGE
Assets:
Derivatives	$	234	$	-	$	-	$	234
Exchange-traded investments		148		148		-		-
Total Assets	$	382	$	148	$	-	$	234
Liabilities:
Derivatives(b)	$	54,316	$	581	$	-	$	53,735
Deferred compensation		3,145		-		3,145		-
Total Liabilities	$	57,461	$	581	$	3,145	$	53,735
(b)   These amounts are shown gross and exclude $1.0 million of collateral that was posted
against derivative positions with counterparties as of December 31, 2015.

No transfers were made in or out of Level 1 or Level 2 for the nine months ended September 30, 2016.

Investments include exchange-traded investment securities valued using quoted prices on active exchanges and are therefore classified as Level 1.

Derivatives include exchange-traded derivative contracts, over-the-counter transactions, a purchased power agreement, and FTRs. Most exchange-traded derivative contracts are valued based on unadjusted quoted prices in active markets and are therefore classified as Level 1. A small number of exchange-traded derivative contracts are valued using quoted market pricing in markets with insufficient volumes and are therefore considered unobservable and classified as Level 3. Transactions done with an over-the-counter party are on inactive markets and are therefore classified as Level 3. These transactions are valued based on quoted prices from markets with similar exchange traded transactions. FTRs are priced based upon monthly auction results for identical or similar instruments in a closed market with limited data available and are therefore classified as Level 3.

The purchased power agreement (see Footnote 8) was valued using an internally-developed pricing model and therefore is classified as Level 3. The model projects future market energy prices and compares those prices to the projected power costs to be incurred under the contract. Inputs to the model require significant management judgment and estimation. Future energy prices are based on a forward power pricing curve using exchange-traded contracts in the electric futures market, where such exchange-traded contracts exist, and upon calculations based on forward gas prices, where such exchange-traded contracts do not exist. A basis adjustment is applied to the market energy price to reflect the price differential between the market price delivery point and the counterparty delivery point. The historical relationship between the delivery points is reviewed and a discount (below 100%) or premium (above 100%) is derived. This comparison is done for both peak times when demand is high and off peak times when demand is low. If the basis adjustment is lowered, the fair value measurement will decrease, and if the basis adjustment is increased, the fair value measurement will increase.

The projected power costs anticipated to be incurred under the purchased power agreement are determined using many factors, including historical generating costs, future prices, and expected fuel mix of the counterparty. An increase in the projected fuel costs would result in a decrease in the fair value measurement of the purchased power agreement. A significant input that MGE estimates is the counterparty's fuel mix in determining the projected power cost. MGE also considers the assumptions that market participants would use in valuing the asset or liability. This consideration includes assumptions about market risk such as liquidity, volatility, and contract duration. The fair value model uses a discount rate that incorporates discounting, credit, and model risks.

26

The following table presents the significant unobservable inputs used in the pricing model.

	Model Input
Significant Unobservable Inputs	September 30, 2016	December 31, 2015
Basis adjustment:
On peak	93.3%	96.9%
Off peak	94.1%	95.1%
Counterparty fuel mix:
Internal generation	55% - 75%	60% - 75%
Purchased power	45% - 25%	40% - 25%

The deferred compensation plan allows participants to defer certain cash compensation into a notional investment account. These amounts are included within other deferred liabilities in the consolidated balance sheets of MGE Energy and MGE. The notional investments earn interest based upon the semiannual rate of U.S. Treasury Bills having a 26 week maturity increased by 1% compounded monthly with a minimum annual rate of 7%, compounded monthly. The notional investments are based upon observable market data, however, since the deferred compensation obligations themselves are not exchanged in an active market, they are classified as Level 2.

The following table summarizes the changes in Level 3 commodity derivative assets and liabilities measured at fair value on a recurring basis.

		Three Months Ended				Nine Months Ended
		September 30,				September 30,
(In thousands)		2016		2015		2016		2015
Beginning balance	$	(51,883)	$	(56,194)	$	(53,501)	$	(53,986)
Realized and unrealized gains (losses):
Included in regulatory liabilities (assets)		1,455		(888)		3,073		(3,096)
Included in other comprehensive income		-		-		-		-
Included in earnings		(278)		(2,285)		(4,250)		(4,497)
Included in current assets		-		-		-		-
Purchases		5,814		6,364		16,751		17,497
Sales		-		-		-		-
Issuances		-		-		-		-
Settlements		(5,537)		(4,079)		(12,502)		(13,000)
Transfers in and/or out of Level 3		-		-		-		-
Balance as of September 30,	$	(50,429)	$	(57,082)	$	(50,429)	$	(57,082)
Total gains (losses) included in earnings attributed to
the change in unrealized gains (losses) related to
assets and liabilities held at September 30,(c)	$	-	$	-	$	-	$	-

The following table presents total realized and unrealized gains (losses) included in income for Level 3 assets and liabilities measured at fair value on a recurring basis (c).

		Three Months Ended				Nine Months Ended
		September 30,				September 30,
(In thousands)		2016		2015		2016		2015
Purchased Power Expense	$	(278)	$	(2,302)	$	(4,250)	$	(4,515)
Cost of Gas Sold Expense		-		17		-		18
Total	$	(278)	$	(2,285)	$	(4,250)	$	(4,497)

(c)

MGE's exchange-traded derivative contracts, over-the-counter party transactions, purchased power agreement, and FTRs are subject to regulatory deferral. These derivatives are therefore marked to fair value and are offset in the financial statements with a corresponding regulatory asset or liability.

27

11.

New Accounting Pronouncements - MGE Energy and MGE.

a.

Revenue from Contracts with Customers.

In May 2014, the FASB issued authoritative guidance within the Codification's Revenue Recognition topic that provides guidance on the recognition, measurement, and disclosure of revenue from contracts with customers. This authoritative guidance will become effective January 1, 2018. MGE Energy and MGE are currently assessing the impact this pronouncement will have on their financial statements.

b.

Consolidation.

In February 2015, the FASB issued authoritative guidance within the Codification's Consolidation topic that provides guidance on the evaluation of certain legal entities for consolidation purposes. This authoritative guidance became effective January 1, 2016. This guidance had no impact on our financial statements.

c.

Debt Issuance Costs.

In April 2015, the FASB issued authoritative guidance within the Codification's Interest topic that provides guidance on the presentation of debt issuance costs in financial statements. This authoritative guidance became effective January 1, 2016, and changed the presentation of debt issuance costs on the balance sheet. Prior to the authoritative guidance, debt issuance costs were treated as a deferred asset, and beginning January 1, 2016, these costs are included as a direct deduction to the related debt liability on the consolidated balance sheet. As of September 30, 2016, assets (other deferred assets and other) and liabilities (long-term debt) decreased approximately $4.0 million as a cumulative result of the guidance. In addition, this guidance was applied retrospectively to all prior periods presented, resulting in a decrease to assets and liabilities of $4.3 million for the year ended December 31, 2015.

d.

Financial Instruments.

In January 2016, the FASB issued authoritative guidance within the Codification's Financial Instruments topic that provides guidance on the recognition and measurement of financial instruments. This authoritative guidance will become effective January 1, 2018, and will require equity investments to be measured at fair value with changes in fair value recognized in net income rather than in other comprehensive income. The impact of this guidance on our financial statements is not expected to be material.

e.

Leases.

In February 2016, the FASB issued authoritative guidance within the Leases topic that provides guidance on the classification, recognition, measurement, and disclosure of leases. This authoritative guidance will become effective January 1, 2019. MGE Energy and MGE are currently assessing the impact this pronouncement will have on their financial statements.

12.

Segment Information - MGE Energy and MGE.

MGE Energy operates in the following business segments: electric utility, gas utility, nonregulated energy, transmission investment, and all other. See MGE Energy's and MGE's 2015 Annual Report on Form 10-K for additional discussion of each of these segments.

28

The following tables show segment information for MGE Energy's operations for the indicated periods:

(In thousands) MGE Energy		Electric		Gas		Non- Regulated Energy		Transmission Investment		All Others		Consolidation/ Elimination Entries		Consolidated Total
Three Months Ended September 30, 2016
Operating revenues	$	118,933	$	17,570	$	214	$	-	$	-	$	-	$	136,717
Interdepartmental revenues		459		6,040		10,998		-		-		(17,497)		-
Total operating revenues		119,392		23,610		11,212		-		-		(17,497)		136,717
Depreciation and amortization		(7,332)		(2,047)		(1,833)		-		-		-		(11,212)
Other operating expenses		(77,010)		(19,292)		(33)		(13)		(127)		17,497		(78,978)
Operating income (loss)		35,050		2,271		9,346		(13)		(127)		-		46,527
Other income (deductions), net		178		13		-		2,023		(109)		-		2,105
Interest (expense) income, net		(2,855)		(818)		(1,436)		-		71		-		(5,038)
Income (loss) before taxes		32,373		1,466		7,910		2,010		(165)		-		43,594
Income tax (provision) benefit		(11,290)		(494)		(3,175)		(812)		57		-		(15,714)
Net income (loss)	$	21,083	$	972	$	4,735	$	1,198	$	(108)	$	-	$	27,880
Three Months Ended September 30, 2015
Operating revenues	$	121,453	$	17,431	$	1,911	$	-	$	-	$	-	$	140,795
Interdepartmental revenues		163		3,855		9,866		-		-		(13,884)		-
Total operating revenues		121,616		21,286		11,777		-		-		(13,884)		140,795
Depreciation and amortization		(7,584)		(1,714)		(1,872)		-		(12)		-		(11,182)
Other operating expenses		(80,202)		(16,906)		(36)		(15)		(161)		13,884		(83,436)
Operating income (loss)		33,830		2,666		9,869		(15)		(173)		-		46,177
Other income (deductions), net		141		(7)		-		2,397		33		-		2,564
Interest (expense) income, net		(2,798)		(804)		(1,491)		-		57		-		(5,036)
Income (loss) before taxes		31,173		1,855		8,378		2,382		(83)		-		43,705
Income tax (provision) benefit		(10,321)		(732)		(3,362)		(962)		26		-		(15,351)
Net income (loss)	$	20,852	$	1,123	$	5,016	$	1,420	$	(57)	$	-	$	28,354
Nine Months Ended September 30, 2016
Operating revenues	$	312,470	$	92,368	$	982	$	-	$	-	$	-	$	405,820
Interdepartmental revenues		1,482		17,278		32,894		-		-		(51,654)		-
Total operating revenues		313,952		109,646		33,876		-		-		(51,654)		405,820
Depreciation and amortization		(21,754)		(6,043)		(5,537)		-		(24)		-		(33,358)
Other operating expenses		(230,680)		(88,328)		(115)		(17)		(706)		51,654		(268,192)
Operating income (loss)		61,518		15,275		28,224		(17)		(730)		-		104,270
Other income (deductions), net		492		(13)		-		6,023		224		-		6,726
Interest (expense) income, net		(8,421)		(2,425)		(4,348)		-		199		-		(14,995)
Income (loss) before taxes		53,589		12,837		23,876		6,006		(307)		-		96,001
Income tax (provision) benefit		(17,984)		(5,048)		(9,583)		(2,418)		90		-		(34,943)
Net income (loss)	$	35,605	$	7,789	$	14,293	$	3,588	$	(217)	$	-	$	61,058
Nine Months Ended September 30, 2015
Operating revenues	$	319,174	$	108,028	$	5,853	$	-	$	-	$	-	$	433,055
Interdepartmental revenues		400		8,871		29,566		-		-		(38,837)		-
Total operating revenues		319,574		116,899		35,419		-		-		(38,837)		433,055
Depreciation and amortization		(22,372)		(5,018)		(5,601)		-		(35)		-		(33,026)
Other operating expenses		(239,963)		(96,063)		(122)		(15)		(626)		38,837		(297,952)
Operating income (loss)		57,239		15,818		29,696		(15)		(661)		-		102,077
Other income (deductions), net		247		(33)		-		6,568		333		-		7,115
Interest (expense) income, net		(8,385)		(2,398)		(4,516)		-		164		-		(15,135)
Income (loss) before taxes		49,101		13,387		25,180		6,553		(164)		-		94,057
Income tax (provision) benefit		(15,868)		(5,370)		(10,106)		(2,637)		35		-		(33,946)
Net income (loss)	$	33,233	$	8,017	$	15,074	$	3,916	$	(129)	$	-	$	60,111

29

The following tables show segment information for MGE's operations for the indicated periods:

(In thousands) MGE		Electric		Gas		Non- Regulated Energy		Transmission Investment(b)		Consolidation/ Elimination Entries		Consolidated Total
Three Months Ended September 30, 2016
Operating revenues	$	118,938	$	17,576	$	214	$	-	$	-	$	136,728
Interdepartmental revenues		454		6,034		10,998		-		(17,486)		-
Total operating revenues		119,392		23,610		11,212		-		(17,486)		136,728
Depreciation and amortization		(7,332)		(2,047)		(1,833)		-		-		(11,212)
Other operating expenses(a)		(88,282)		(19,781)		(3,208)		4		17,486		(93,781)
Operating income(a)		23,778		1,782		6,171		4		-		31,735
Other income, net(a)		160		8		-		868		-		1,036
Interest expense, net		(2,855)		(818)		(1,436)		-		-		(5,109)
Net income		21,083		972		4,735		872		-		27,662
Less: Net income attributable to
noncontrolling interest, net of tax		-		-		-		-		(5,695)		(5,695)
Net income attributable to MGE	$	21,083	$	972	$	4,735	$	872	$	(5,695)	$	21,967
Three Months Ended September 30, 2015
Operating revenues	$	121,460	$	17,435	$	1,911	$	-	$	-	$	140,806
Interdepartmental revenues		156		3,851		9,866		-		(13,873)		-
Total operating revenues		121,616		21,286		11,777		-		(13,873)		140,806
Depreciation and amortization		(7,584)		(1,714)		(1,872)		-		-		(11,170)
Other operating expenses(a)		(90,511)		(17,635)		(3,398)		(15)		13,873		(97,686)
Operating income (loss)(a)		23,521		1,937		6,507		(15)		-		31,950
Other (deductions) income, net(a)		129		(10)		-		1,435		-		1,554
Interest expense, net		(2,798)		(804)		(1,491)		-		-		(5,093)
Net income		20,852		1,123		5,016		1,420		-		28,411
Less: Net income attributable to
noncontrolling interest, net of tax		-		-		-		-		(6,633)		(6,633)
Net income attributable to MGE	$	20,852	$	1,123	$	5,016	$	1,420	$	(6,633)	$	21,778
Nine Months Ended September 30, 2016
Operating revenues	$	312,488	$	92,390	$	982	$	-	$	-	$	405,860
Interdepartmental revenues		1,464		17,256		32,894		-		(51,614)		-
Total operating revenues		313,952		109,646		33,876		-		(51,614)		405,860
Depreciation and amortization		(21,754)		(6,043)		(5,537)		-		-		(33,334)
Other operating expenses(a)		(248,566)		(93,348)		(9,698)		-		51,614		(299,998)
Operating income(a)		43,632		10,255		18,641		-		-		72,528
Other income (deductions), net(a)		394		(41)		-		3,262		-		3,615
Interest expense, net		(8,421)		(2,425)		(4,348)		-		-		(15,194)
Net income		35,605		7,789		14,293		3,262		-		60,949
Less: Net income attributable to
noncontrolling interest, net of tax		-		-		-		-		(17,899)		(17,899)
Net income attributable to MGE	$	35,605	$	7,789	$	14,293	$	3,262	$	(17,899)	$	43,050
Nine Months Ended September 30, 2015
Operating revenues	$	319,191	$	108,039	$	5,853	$	-	$	-	$	433,083
Interdepartmental revenues		383		8,860		29,566		-		(38,809)		-
Total operating revenues		319,574		116,899		35,419		-		(38,809)		433,083
Depreciation and amortization		(22,372)		(5,018)		(5,601)		-		-		(32,991)
Other operating expenses(a)		(255,732)		(101,405)		(10,228)		(15)		38,809		(328,571)
Operating income (loss)(a)		41,470		10,476		19,590		(15)		-		71,521
Other income (deductions), net(a)		148		(61)		-		3,931		-		4,018
Interest expense, net		(8,385)		(2,398)		(4,516)		-		-		(15,299)
Net income		33,233		8,017		15,074		3,916		-		60,240
Less: Net income attributable to
noncontrolling interest, net of tax		-		-		-		-		(19,812)		(19,812)
Net income attributable to MGE	$	33,233	$	8,017	$	15,074	$	3,916	$	(19,812)	$	40,428
(a)     Amounts are shown net of the related tax expense, consistent with the presentation on the MGE Consolidated Statement of Income.
(b)     As of July 31, 2016, MGE no longer consolidates MGE Energy's proportionate share of equity earnings in MGE Transco. See Footnote 3 for further discussion.

30

Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations.

General

MGE Energy is an investor-owned public utility holding company operating through subsidiaries in five business segments:

·

Regulated electric utility operations, conducted through MGE,

·

Regulated gas utility operations, conducted through MGE,

·

Nonregulated energy operations, conducted through MGE Power and its subsidiaries,

·

Transmission investments, representing our equity investment in ATC, and

·

All other, which includes corporate operations and services.

Our principal subsidiary is MGE, which generates and distributes electric energy, distributes natural gas, and represents a majority portion of our assets, liabilities, revenues, and expenses. MGE generates and distributes electricity to approximately 146,000 customers in Dane County, Wisconsin, including the city of Madison, and purchases and distributes natural gas to approximately 152,000 customers in the Wisconsin counties of Columbia, Crawford, Dane, Iowa, Juneau, Monroe, and Vernon.

Our nonregulated energy operations own interests in electric generating capacity that is leased to MGE. The ownership/leasing structure was adopted under applicable state regulatory guidelines for MGE's participation in these generation facilities, consisting principally of a stable return on the equity investment in the new generation facilities over the term of the related leases. The nonregulated energy operations include an ownership interest in two coal-fired generating units in Oak Creek, Wisconsin and a partial ownership of a cogeneration project on the UW-Madison campus. A third party operates the units in Oak Creek, and MGE operates the cogeneration project. Due to the nature of MGE's participation in these facilities, the results of our nonregulated operations are also consolidated into MGE's consolidated financial position and results of operations under applicable accounting standards.

Executive Overview

Our primary focus today and for the foreseeable future is our core utility customers at MGE as well as creating long-term value for our shareholders. MGE continues to face the challenge of providing its customers with reliable power at competitive prices. MGE meets this challenge by investing in more efficient generation projects, including renewable energy sources. MGE will continue to focus on growing earnings while controlling operating and fuel costs. MGE maintains safe and efficient operations in addition to providing customer value. We believe it is critical to maintain a strong credit standing consistent with financial strength in MGE as well as the parent company in order to accomplish these goals.

We earn our revenue and generate cash from operations by providing electric and natural gas utility services, including electric power generation and electric power and gas distribution. The earnings and cash flows from the utility business are sensitive to various external factors, including:

·

Weather, and its impact on customer sales,

·

Economic conditions, including current business activity and employment and their impact on customer demand,

·

Regulation and regulatory issues, and their impact on the timing and recovery of costs,

·

Energy commodity prices, including natural gas prices,

·

Equity price risk pertaining to pension related assets,

·

Credit market conditions, including interest rates and our debt credit rating,

·

Environmental laws and regulations, including adopted and pending environmental rule changes,

and other factors listed in "Item 1A. Risk Factors" in our 2015 Annual Report on Form 10-K.

For the three months ended September 30, 2016, MGE Energy's earnings were $27.9 million or $0.80 per share compared to $28.4 million or $0.82 per share for the same period in the prior year. MGE's earnings for the three months ended September 30, 2016, were $22.0 million compared to $21.8 million for the same period in the prior year.

For the nine months ended September 30, 2016, MGE Energy's earnings were $61.1 million or $1.76 per share compared to $60.1 million or $1.73 per share for the same period in the prior year. MGE's earnings for the nine months ended September 30, 2016, were $43.1 million compared to $40.4 million for the same period in the prior year.

31

MGE Energy's net income was derived from our business segments as follows:

		Three Months Ended				Nine Months Ended
(In thousands)		September 30,				September 30,
Business Segment:		2016		2015		2016		2015
Electric Utility	$	21,083	$	20,852	$	35,605	$	33,233
Gas Utility		972		1,123		7,789		8,017
Nonregulated Energy		4,735		5,016		14,293		15,074
Transmission Investments		1,198		1,420		3,588		3,916
All Other		(108)		(57)		(217)		(129)
Net Income	$	27,880	$	28,354	$	61,058	$	60,111

Our net income during the three months ended September 30, 2016, compared to the same period in the prior year primarily reflects the effects of the following factors:

·

Electric residential customer usage increased 10.7% and commercial customers consumed 2.0% more electricity. The increase in sales was partially offset by an increase in electric and gas utility operating and maintenance costs compared to the same period in the prior year.

·

Carrying costs incurred during construction of the Elm Road Units and WCCF were recognized by MGE Power Elm Road and MGE Power West Campus over the period allowed for recovery in rates. The recovery period ended in 2015, contributing to a reduction in nonregulated earnings in 2016. The reduction in earnings was partially offset by an increase in lease revenue.

Our net income during the nine months ended September 30, 2016, primarily reflects the effects of the following factors:

·

Electric net income increased due to a 5.5% increase in residential electric retail sales as the result of more favorable weather conditions in 2016 compared to the same period in the prior year. Electric utility operations experienced an increase in operating and maintenance costs partially offsetting the increase in net income compared to the same period in the prior year.

·

Carrying costs incurred during construction of the Elm Road Units and WCCF were recognized by MGE Power Elm Road and MGE Power West Campus over the period allowed for recovery in rates. The recovery period ended in 2015, contributing to a reduction in nonregulated earnings in 2016. The reduction in earnings was partially offset by an increase in lease revenue.

During the first nine months of 2016, the following events occurred:

2016 Rates: In July 2015, the PSCW approved MGE's request to extend the current accounting treatment for transmission related costs through 2016, conditioned upon MGE not filing a base rate case for 2016. This accounting treatment allows MGE to reflect any differential between transmission costs reflected in rates and actual costs incurred in its next rate case filing, which occurred as part of the April 2016 filing for 2017 base rates.

2016 Annual Fuel Proceeding: In August 2015, the PSCW approved a $0.00256/kWh fuel credit that began on September 1, 2015, and will continue throughout 2016. The fuel credit established a mechanism to return $10.9 million of fuel savings to electric customers as a bill credit. MGE returned $6.3 million of electric fuel-related savings to customers through bill credits during the nine months ended September 30, 2016.

In January 2016, the PSCW lowered MGE's 2016 fuel rules monitored costs by $14.8 million as a result of continued lower projected fuel costs in 2016. Also, in March 2016, MGE filed its 2015 fuel plan reconciliation application showing an overcollection of 2015 fuel rules monitored costs. In July 2016, the PSCW issued a final order stating that MGE shall refund the additional fuel savings incurred during 2015 and 2016 for a total of $15.7 million to its retail electric customers over a one-month period. In September 2016, MGE returned $15.5 million to customers through bill credits.

As of September 30, 2016, MGE has deferred $4.1 million of 2016 fuel savings that were in excess of the fuel savings included within the fuel credits referenced above. These costs will be subject to the PSCW's annual review of 2016 fuel costs, expected to be completed in 2017.

32

ATC Return on Equity: Several parties have filed complaints with the FERC seeking to reduce the base return on equity (ROE) used by MISO transmission owners, including ATC. In September 2016, FERC issued an order regarding the first filed complaint reducing the transmission owners' base ROE to 10.32% for the period of November 2013 through February 2015 following an administrative law judge initial decision. In June 2016, an administrative law judge issued an initial decision regarding a second filed complaint in February 2015 that would reduce the transmission owners' base ROE to 9.7%. ATC recorded an estimated refund liability with respect to the administrative law judge's order, which was reflected within our share of ATC earnings. See "Other Matters" below for additional information concerning ATC.

In the near term, several items may affect us, including:

2017 Rate Case Filing: In April 2016, MGE filed an application with the PSCW requesting a 1.7% increase to electric rates and a 3.7% increase to gas rates for 2017. The proposed electric and gas rate increases cover costs primarily associated with the state's electric transmission and MGE's natural gas system infrastructure improvements. A decision is expected during the fourth quarter of 2016.

ATC Return on Equity: Several parties have filed complaints with the FERC seeking to reduce the ROE used by MISO transmission owners, including ATC. Any change to ATC's ROE could result in lower equity earnings and distributions from ATC in the future. We derived approximately 5.8% and 6.4% of our net income for the nine months ended September 30, 2016 and 2015 respectively, from our investment in ATC. See "Other Matters" below for additional information concerning ATC.

Loss of Industrial Customer: In November 2015, a large industrial customer announced its intention to relocate its operations out of state and to close its manufacturing facilities within our service territory. That closure is expected to occur in early 2017. For the nine months ended September 30, 2016 and 2015, this customer contributed approximately $2.8 million and $2.9 million, respectively, of pre-tax earnings. Our rate case filing for 2017 addresses the effects of the closure. There could be some impact on our electric revenues during 2016 if the customer's operations are curtailed as a result of the impending closure.

Environmental Initiatives: There are proposed legislation, rules, and initiatives involving matters related to air emissions, water effluent, hazardous materials, and greenhouse gases, all of which affect generation plant capital expenditures and operating costs as well as future operational planning. Such legislation and rulemaking could significantly affect the costs of owning and operating fossil-fueled generating plants, such as Columbia and the Elm Road Units, from which we derive approximately 44% of our electric generating capacity. We would expect to seek and receive recovery of any such costs in rates; however, it is difficult to estimate the amount of such costs due to the uncertainty as to the timing and form of the legislation and rules, and the scope and time of the recovery of costs in rates, which may lag the incurrence of those costs.

EPA's Clean Power Plan: In 2015, the EPA published its Clean Power Plan rule setting guidelines and approval criteria for states to use in developing plans to control GHG emissions from existing fossil fuel-fired EGUs and systems. Implementation of the rule is expected to have a direct impact on coal and natural gas fired generating units, including possible changes in dispatch and additional operating costs. MGE is currently evaluating the rule and its requirements. Although the implementation of the rule is presently stayed as a result of a February 9, 2016, U.S. Supreme Court ruling, compliance with the rule's requirements, including the yet-to-be-developed state implementation plan, is expected to have a material impact on MGE if the rule is upheld and becomes effective.

Pension and Other Postretirement Benefit Costs: Costs for pension and other postretirement benefits are affected by actual investment returns on the assets held for those benefits and by the discount rate, which is sensitive to interest rates, used to calculate those benefits. Interest rates and investment returns have experienced volatility since the end of the year that could affect the value of the pension and postretirement benefit obligations. The changes in the discount rates and value of plan assets are not expected to have an impact on the income statements for 2016. However, these changes may affect benefit costs in future years. MGE expects changes in the cost for employee benefit plans will be factored into future rate actions, although there could be a lag between actual costs and cost permitted to be recovered in rates.

Future Generation: During the first quarter of 2016, MGE entered into an agreement with WPL under which MGE may acquire up to 50 MW of capacity in a gas-fired generating plant to be constructed by WPL at its Riverside Energy Center in Beloit, Wisconsin, during the five-year period following the in-service date of the plant. The plant is expected to be completed by early 2020. MGE and WPL have negotiated a second agreement under which MGE will reduce its obligation to pay certain capital expenditures (other than SCR-related expenditures) at Columbia prior to the expected in-service date of the Riverside gas-fired generating plant in exchange for a proportional reduction in MGE's ownership

33

in Columbia. As of September 30, 2016, MGE has accrued $11.2 million of 2016 capital expenditures in total property, plant, and equipment (of which $8.7 million is included in construction work in progress) related to Columbia, that MGE would forgo as part of this second agreement with WPL, subject to approval by the PSCW. In October 2016, the PSCW approved the second agreement and as a result MGE's property, plant and equipment will be reduced by $11.2 million in the fourth quarter of 2016. MGE currently owns 22% of Columbia. By June 2020, MGE's ownership in Columbia is forecasted to be approximately 19%.

General Economic Conditions: Economic conditions both inside and outside our service area are expected to continue to affect the level of demand for our utility services and may affect the collection of our accounts receivable and the creditworthiness of counterparties with whom we do business. We have in place lines of credit aggregating $150 million for MGE Energy (including MGE) and $100 million for MGE to address our liquidity needs. As of September 30, 2016, there were no borrowings outstanding under MGE Energy's or MGE's lines of credit.

Financing Plans: MGE has $30 million of medium-term notes maturing in 2017. MGE priced $40 million of new long-term unsecured debt in October 2016, with funding expected to occur in mid-January 2017. The new debt will carry an interest rate of 3.76% per annum over its 35-year term. The proceeds of this debt financing will be used to refinance the maturing $30 million medium-term notes and assist with the financing of additional capital expenditures. The covenants of this debt are expected to be substantially consistent with MGE's existing unsecured long-term debt. In accordance with applicable accounting guidance, MGE has classified the $30 million of maturing medium-term notes as long-term debt on the consolidated balance sheets for the quarter ended September 30, 2016.

The following discussion is based on the business segments as discussed in Footnote 12 of the Notes to Consolidated Financial Statements.

Three Months Ended September 30, 2016 and 2015

Electric Utility Operations - MGE Energy and MGE

Electric sales and revenues

The following table compares MGE's electric revenues and electric kWh sales by customer class for each of the periods indicated:

		Revenues				Sales (kWh)
(In thousands, except cooling degree days)		Three Months Ended September 30,				Three Months Ended September 30,
		2016		2015	% Change	2016	2015	% Change
Residential	$	40,120	$	40,584	(1.1)%	259,529	234,421	10.7 %
Commercial		55,232		64,240	(14.0)%	517,253	507,033	2.0 %
Industrial		4,122		5,793	(28.8)%	61,362	66,150	(7.2)%
Other-retail/municipal		9,091		11,217	(19.0)%	114,097	114,728	(0.5)%
Total retail		108,565		121,834	(10.9)%	952,241	922,332	3.2 %
Sales to the market		2,120		737	N/A%	52,278	19,712	N/A%
Deferral of fuel savings		8,194		-	-  %	-	-	-  %
Adjustments to revenues		54		(1,118)	104.8 %	-	-	-  %
Total	$	118,933	$	121,453	(2.1)%	1,004,519	942,044	6.6 %
Cooling degree days (normal 465)						570	504	13.1 %

Electric operating revenues decreased $2.5 million or 2.1% for the three months ended September 30, 2016, compared to the same period in 2015, due to the following:

(In millions)
Deferral of fuel savings/fuel credit	$	(8.9)
Volume		3.8
Sales to the market		1.4
Adjustments to revenues		1.1
Other		0.1
Total	$	(2.5)

34

In July 2015, the PSCW authorized MGE to freeze 2016 rates at 2015 levels for retail electric customers.

·

Deferral of fuel savings/fuel credit. During the three months ended September 30, 2016, customers received a fuel credit on their bill related to the fuel savings of $17.1 million, which decreased electric revenues when compared to the same period in the prior year. This amount was partially offset by the 2016 deferred fuel rules monitored costs. In January 2016, the PSCW lowered MGE's 2016 fuel rules monitored costs as a result of continued lower projected fuel costs in 2016. MGE has deferred the fuel credit in revenue.

·

Volume. During the three months ended September 30, 2016, there was a 10.7% increase in residential sales volumes compared to the same period in the prior year driven by increased customer demand due, at least in part, to more favorable weather conditions, as evidenced by the higher number of cooling degree days.

·

Sales to the market. Sales to the market represent wholesale sales made to third parties who are not ultimate users of the electricity. These sales may include spot market transactions on the markets operated by MISO and PJM. These sales may also include bilateral sales to other utilities or power marketers. Generating units are dispatched by MISO based on cost considerations as well as reliability of the system. Sales to the market typically occur when MGE has more generation and purchases online than are needed for its own system demand. The excess electricity is then sold to others in the market. For the three months ended September 30, 2016, market volumes increased compared to the same period in the prior year, reflecting increased opportunities for sales and those sales were made at higher market prices. The revenue generated from these sales is included in fuel rules monitored costs. See fuel rules discussion in Footnote 9.b.

·

Adjustments to revenue. The adjustments to revenues amount includes the elimination of carrying costs for the Elm Road Units and the WCCF that were collected in electric rates ending in 2015, which were recognized as operating revenues in our Nonregulated Energy Operations segment.

MGE leases electric generating capacity from MGE Power Elm Road. MGE collects in rates the lease payments associated with the electric generating capacity as authorized by the PSCW. Any differential between estimated lease payments collected in rates and actual lease payments paid to MGE Power Elm Road are included in adjustments to revenues.

Electric fuel and purchased power

Electric fuel and purchased power costs reflect an increase in internal generation volumes offset by a decrease in the volume of purchased power when compared to the prior period. Adjustments related to the regulatory recovery for fuel costs, known as fuel rules, decreased purchased power expense. These items are explained below.

Fuel for electric generation

The expense for fuel for internal electric generation increased $3.5 million during the three months ended September 30, 2016, compared to the same period in the prior year, due to the following:

(In millions)
Increase in volume	$	4.6
Decrease in per-unit cost		(1.1)
Total	$	3.5

This increase in expense reflects a 26.9% increase in internal generation volume delivered to the system primarily as a result of increased generation at WCCF based on market prices, partially offset by a 5.3% decrease in per-unit cost of internal electric generation, reflective of lower natural gas prices.

Purchased power

Purchased power expense decreased $9.3 million during the three months ended September 30, 2016, compared to the same period in the prior year, due to the following:

(In millions)
Decrease in volume	$	(5.1)
Increase in per-unit cost		0.5
Change in fuel rule adjustments, net of recoveries		(4.7)
Total	$	(9.3)

35

The decrease in expense (before fuel rules adjustments) reflects a 29.8% decrease in the volume of power purchased from third parties primarily as a result of the increased internal generation, partially offset by a 4.6% increase in the per-unit cost of purchased power.

Under fuel rules, MGE is required to defer electric fuel-related costs that fall outside a 2% cost tolerance band around the amount used in the most recent rate proceeding. Any fuel rules adjustments are reflected in purchased power expense.

Electric operating and maintenance expenses

Electric operating and maintenance expenses increased $0.8 million during the three months ended September 30, 2016, compared to the same period in 2015. The following changes contributed to the net change:

(In millions)
Increased administrative and general costs	$	0.4
Increased customer accounts costs		0.3
Increased distribution expenses		0.3
Decreased production expenses		(0.2)
Total	$	0.8

Gas Utility Operations - MGE Energy and MGE

Gas deliveries and revenues

The following table compares MGE's gas revenues and gas therms delivered by customer class during each of the periods indicated:

		Revenues				Therms Delivered
(In thousands, except HDD and average rate per therm of retail customer)		Three Months Ended September 30,				Three Months Ended September 30,
		2016		2015	% Change	2016	2015	% Change
Residential	$	11,440	$	11,306	1.2 %	5,468	5,651	(3.2)%
Commercial/Industrial		5,043		5,039	0.1 %	8,488	8,553	(0.8)%
Total retail		16,483		16,345	0.8 %	13,956	14,204	(1.7)%
Gas transportation		997		990	0.7 %	15,982	15,939	0.3 %
Other revenues		90		96	(6.3)%	-	-	-  %
Total	$	17,570	$	17,431	0.8 %	29,938	30,143	(0.7)%
Heating degree days (normal 163)						49	98	(50.0)%
Average rate per therm of
retail customer	$	1.181	$	1.151	2.6 %

Gas revenues increased $0.1 million or 0.8% for the three months ended September 30, 2016, compared to the same period in 2015. These changes are related to the following factors:

(In millions)
Rate/PGA changes	$	0.2
Volume		(0.1)
Total	$	0.1

In July 2015, the PSCW authorized MGE to freeze 2016 rates at 2015 levels for retail gas customers.

·

Rate/PGA changes. MGE recovers the cost of natural gas in its gas segment through the purchased gas adjustment clause (PGA). Under the PGA, MGE is able to pass through to its gas customers the cost of gas. Changes in PGA recoveries affect revenues, but do not impact net income.

The average retail rate per therm for the three months ended September 30, 2016, increased 2.6% compared to the same period in 2015, reflecting a $0.1 million increase in natural gas commodity costs (recovered through the PGA) and an increase in fixed rate charges.

36

·

Volume. For the three months ended September 30, 2016, retail gas deliveries decreased 1.7% compared to the same period in the prior year.

Cost of gas sold

For the three months ended September 30, 2016, cost of gas sold was flat, compared to the same period in the prior year. The cost per therm of natural gas increased 2.7%, which resulted in $0.1 million of increased expense. The volume of gas purchased decreased 2.3%, which resulted in $0.1 million of decreased expense.

Gas operating and maintenance expenses

Gas operating and maintenance expenses increased by $0.7 million for the three months ended September 30, 2016, compared to the same period in 2015. The following changes contributed to the net change:

(In millions)
Increased administrative and general costs	$	0.6
Increased customer accounts costs		0.3
Decreased distribution expenses		(0.2)
Total	$	0.7

Nonregulated Energy Operations - MGE Energy and MGE

The nonregulated energy operations are conducted through MGE Energy's subsidiaries: MGE Power Elm Road (the Elm Road Units) and MGE Power West Campus (WCCF), which have been formed to own and lease electric generating capacity to assist MGE. For the three months ended September 30, 2016 and 2015, net income at the nonregulated energy operations segment was $4.7 million and $5.0 million, respectively. Carrying costs incurred during construction of the Elm Road Units and WCCF were recognized by MGE Power Elm Road and MGE Power West Campus over the period allowed for recovery in rates. The recovery period ended in 2015, contributing to a reduction in nonregulated earnings in 2016. The reduction in earnings was partially offset by an increase in lease revenue.

Transmission Investment Operations - MGE Energy and MGE

Transmission investment other income

For the three months ended September 30, 2016 and 2015, other income at the transmission investment segment was $2.0 million and $2.4 million, respectively. The transmission investment segment holds our interest in ATC, and its income reflects our equity in the earnings of ATC. See Footnote 3 of the Notes to Consolidated Financial Statements and "Other Matters" below for additional information concerning ATC and summarized financial information regarding ATC.

Consolidated Income Taxes - MGE Energy and MGE

MGE Energy's effective income tax rate for the three months ended September 30, 2016 and 2015, was 36.1% and 35.1%, respectively. MGE's effective income tax rate for the three months ended September 30, 2016 and 2015, was 36.0% and 35.1%, respectively. The increase in the effective tax rate is due in part to a lower estimated domestic manufacturing deduction offset by higher estimated AFUDC equity earnings in 2016.

Noncontrolling Interest, Net of Tax - MGE

The noncontrolling interest, net of tax, reflects the accounting required for MGE Energy's interest in MGE Power Elm Road (the Elm Road Units) and MGE Power West Campus (WCCF). MGE Energy owns 100% of MGE Power Elm Road and MGE Power West Campus; however, due to the contractual agreements for these projects with MGE, the entities are considered VIEs with respect to MGE and their results are consolidated with those of MGE, the primary beneficiary of the VIEs. Also included in noncontrolling interest, net of tax, is MGE Energy's interest in MGE Transco, which holds our investment in ATC.

37

The following table shows MGE Energy's noncontrolling interest, net of tax, reflected on MGE's consolidated statement of income:

		Three Months Ended
		September 30,
(In millions)		2016		2015
MGE Power Elm Road	$	3.7	$	4.1
MGE Power West Campus		1.8		1.8
MGE Transco(a)		0.2		0.7

(a)

MGE's ownership interest declined below a majority in July 2016 as a result of continued funding of ATC capital contributions by MGE Energy. As a result of the change in majority ownership in MGE Transco in July 2016, MGE deconsolidated the noncontrolling interest within MGE's financial statements for MGE Energy's proportionate share of the equity in MGE Transco. No gain or loss was recognized in July 2016 due to MGE ceasing to have a controlling financial interest. See Footnote 3 of the Notes to Consolidated Financial Statements for additional information.

Nine Months Ended September 30, 2016 and 2015

Electric Utility Operations - MGE Energy and MGE

Electric sales and revenues

The following table compares MGE's electric revenues and electric kWh sales by customer class for each of the periods indicated:

		Revenues				Sales (kWh)
(In thousands, except cooling degree days)		Nine Months Ended September 30,				Nine Months Ended September 30,
		2016		2015	% Change	2016	2015	% Change
Residential	$	104,917	$	104,733	0.2 %	641,551	608,204	5.5 %
Commercial		161,056		170,670	(5.6)%	1,420,769	1,400,358	1.5 %
Industrial		13,381		15,666	(14.6)%	178,535	187,493	(4.8)%
Other-retail/municipal		26,498		30,016	(11.7)%	296,093	322,881	(8.3)%
Total retail		305,852		321,085	(4.7)%	2,536,948	2,518,936	0.7 %
Sales to the market		5,281		1,637	N/A%	161,217	44,260	N/A%
Deferral of fuel savings		1,125		-	-  %	-	-	-  %
Adjustments to revenues		212		(3,548)	(106.0)%	-	-	-  %
Total	$	312,470	$	319,174	(2.1)%	2,698,165	2,563,196	5.3 %
Cooling degree days (normal 641)						771	665	15.9 %

Electric operating revenues decreased $6.7 million or 2.1% for the nine months ended September 30, 2016, compared to the same period in 2015, due to the following:

(In millions)
Deferral of fuel savings/fuel credit	$	(19.9)
Volume		4.9
Adjustments to revenue		3.8
Sales to the market		3.6
Other		0.9
Total	$	(6.7)

In July 2015, the PSCW authorized MGE to freeze 2016 rates at 2015 levels for retail electric customers.

·

Deferral of fuel savings/fuel credit. During the nine months ended September 30, 2016, customers received fuel credit on their bill related to the fuel savings of $21.0 million, which decreased electric revenues when compared to the same period in the prior year. This amount was partially offset by the 2016 deferred fuel rules monitored costs. In January 2016, the PSCW lowered MGE's 2016 fuel rules monitored costs as a result of continued lower projected fuel costs in 2016. MGE has deferred the fuel credit in revenue.

38

·

Volume. During the nine months ended September 30, 2016, there was a 5.5% increase in residential sales volumes compared to the same period in the prior year driven by increased customer demand due, at least in part, to more favorable weather conditions, as evidenced by the higher number of cooling degree days.

·

Adjustments to revenue. The adjustments to revenues amount includes the elimination of carrying costs for the Elm Road Units and the WCCF that were collected in electric rates ending in 2015, which were recognized as operating revenues in our Nonregulated Energy Operations segment.

MGE leases electric generating capacity from MGE Power Elm Road. MGE collects in rates the lease payments associated with the electric generating capacity as authorized by the PSCW. Any differential between estimated lease payments collected in rates and actual lease payments paid to MGE Power Elm Road are included in adjustments to revenues.

·

Sales to the market. Sales to the market represent wholesale sales made to third parties who are not ultimate users of the electricity. These sales may include spot market transactions on the markets operated by MISO and PJM. These sales may also include bilateral sales to other utilities or power marketers. Generating units are dispatched by MISO based on cost considerations as well as reliability of the system. Sales to the market typically occur when MGE has purchases and generation online exceeding its own system demand. The excess electricity is then sold to others in the market. For the nine months ended September 30, 2016, market volumes increased compared to the same period in the prior year, reflecting increased opportunities for sales and those sales were made at higher market prices. The revenue generated from these sales is included in fuel rules monitored costs. See fuel rules discussion in Footnote 9.b.

Electric fuel and purchased power

Electric fuel and purchased power costs reflect an increase in internal generation volumes offset by a decrease in the volume of purchased power when compared to the prior period. Adjustments related to the regulatory recovery for fuel costs, known as fuel rules, decreased purchased power expense. These items are explained below.

Fuel for electric generation

The expense for fuel for internal electric generation increased $5.9 million during the nine months ended September 30, 2016, compared to the same period in the prior year, due to the following:

(In millions)
Increase in volume	$	10.1
Decrease in per-unit cost		(4.2)
Total	$	5.9

This increase in expense reflects a 27.0% increase in internal generation volume delivered to the system primarily as a result of increased generation at WCCF based on market prices, partially offset by a 10.0% decrease in per-unit cost of internal electric generation, reflective of lower natural gas prices.

Purchased power

Purchased power expense decreased $23.9 million during the nine months ended September 30, 2016, compared to the same period in the prior year, due to the following:

(In millions)
Decrease in volume	$	(15.0)
Increase in per-unit cost		3.1
Change in fuel rule adjustments, net of recoveries		(12.0)
Total	$	(23.9)

The decrease in expense (before fuel rules adjustments) reflects a 26.8% decrease in the volume of power purchased from third parties primarily as a result of the increased internal generation, partially offset by a 7.5% increase in the per-unit cost of purchased power.

Under fuel rules, MGE is required to defer electric fuel-related costs that fall outside a 2% cost tolerance band around the amount used in the most recent rate proceeding. Any fuel rules adjustments are reflected in purchased power expense.

39

Electric operating and maintenance expenses

Electric operating and maintenance expenses increased $2.1 million during the nine months ended September 30, 2016, compared to the same period in 2015. The following changes contributed to the net change:

(In millions)
Increased production expenses	$	0.8
Increased distribution expenses		0.5
Increased administrative and general costs		0.4
Increased customer accounts costs		0.2
Increased transmission costs		0.2
Total	$	2.1

For the nine months ended September 30, 2016, increased production expenses are primarily related to increased maintenance costs at Columbia and WCCF compared to the prior year.

Gas Utility Operations - MGE Energy and MGE

Gas deliveries and revenues

The following table compares MGE's gas revenues and gas therms delivered by customer class during each of the periods indicated:

		Revenues				Therms Delivered
(In thousands, except HDD and average rate per therm of retail customer)		Nine Months Ended September 30,				Nine Months Ended September 30,
		2016		2015	% Change	2016	2015	% Change
Residential	$	56,344	$	64,208	(12.2)%	62,188	67,690	(8.1)%
Commercial/Industrial		32,324		39,973	(19.1)%	58,812	64,389	(8.7)%
Total retail		88,668		104,181	(14.9)%	121,000	132,079	(8.4)%
Gas transportation		3,402		3,462	(1.7)%	53,957	56,946	(5.2)%
Other revenues		298		385	(22.6)%	-	-	-  %
Total	$	92,368	$	108,028	(14.5)%	174,957	189,025	(7.4)%
Heating degree days (normal 4,568)						4,135	4,653	(11.1)%
Average rate per therm of
retail customer	$	0.733	$	0.789	(7.1)%

Gas revenues decreased $15.7 million or 14.5% for the nine months ended September 30, 2016, compared to the same period in 2015. These changes are related to the following factors:

(In millions)
Rate/PGA changes	$	(8.2)
Volume		(7.4)
Transportation and other effects		(0.1)
Total	$	(15.7)

In July 2015, the PSCW authorized MGE to freeze 2016 rates at 2015 levels for retail gas customers.

·

Rate/PGA changes. MGE recovers the cost of natural gas in its gas segment through the purchased gas adjustment clause (PGA). Under the PGA, MGE is able to pass through to its gas customers the cost of gas. Changes in PGA recoveries affect revenues, but do not impact net income.

The average retail rate per therm for the nine months ended September 30, 2016, decreased 7.1% compared to the same period in 2015, reflecting an $8.7 million decrease in natural gas commodity costs (recovered through the PGA), offset by an increase in fixed rate charges.

·

Volume. For the nine months ended September 30, 2016, retail gas deliveries decreased 8.4% due, at least in part, to warmer weather in the first quarter of 2016 compared to the same period in the prior year.

40

Cost of gas sold

For the nine months ended September 30, 2016, cost of gas sold decreased by $14.6 million, compared to the same period in the prior year. The cost per therm of natural gas decreased 17.7%, which resulted in $9.3 million of decreased expense. The volume of purchased gas decreased 9.2%, which resulted in $5.3 million of decreased expense.

Gas operating and maintenance expenses

Gas operating and maintenance expenses increased by $0.7 million for the nine months ended September 30, 2016, compared to the same period in 2015. The following changes contributed to the net change:

(In millions)
Increased administrative and general costs	$	0.6
Increased customer account costs		0.3
Decreased distribution expenses		(0.1)
Decreased production expenses		(0.1)
Total	$	0.7

Nonregulated Energy Operations - MGE Energy and MGE

The nonregulated energy operations are conducted through MGE Energy's subsidiaries: MGE Power Elm Road (the Elm Road Units) and MGE Power West Campus (WCCF), which have been formed to own and lease electric generating capacity to assist MGE. For the nine months ended September 30, 2016 and 2015, net income at the nonregulated energy operations segment was $14.3 million and $15.1 million, respectively. Carrying costs incurred during construction of the Elm Road Units and WCCF were recognized by MGE Power Elm Road and MGE Power West Campus over the period allowed for recovery in rates. The recovery period ended in 2015, contributing to a reduction in nonregulated earnings in 2016. The reduction in earnings was partially offset by an increase in lease revenue.

Transmission Investment Operations - MGE Energy and MGE

Transmission investment other income

For the nine months ended September 30, 2016 and 2015, other income at the transmission investment segment was $6.0 million and $6.6 million, respectively. The transmission investment segment holds our interest in ATC, and its income reflects our equity in the earnings of ATC. See Footnote 3 of the Notes to Consolidated Financial Statements and "Other Matters" below for additional information concerning ATC and summarized financial information regarding ATC.

Consolidated Income Taxes - MGE Energy and MGE

Both MGE Energy's and MGE's effective income tax rate for the nine months ended September 30, 2016 and 2015, was 36.4% and 36.1%, respectively. The increase in the effective tax rates is due in part to a lower estimated domestic manufacturing deduction offset by higher estimated AFUDC equity earnings in 2016.

Noncontrolling Interest, Net of Tax - MGE

The noncontrolling interest, net of tax, reflects the accounting required for MGE Energy's interest in MGE Power Elm Road (the Elm Road Units) and MGE Power West Campus (WCCF). MGE Energy owns 100% of MGE Power Elm Road and MGE Power West Campus; however, due to the contractual agreements for these projects with MGE, the entities are considered VIEs with respect to MGE and their results are consolidated with those of MGE, the primary beneficiary of the VIEs. Also included in noncontrolling interest, net of tax, is MGE Energy's interest in MGE Transco, which holds our investment in ATC.

41

The following table shows MGE Energy's noncontrolling interest, net of tax, reflected on MGE's consolidated statement of income:

		Nine Months Ended
		September 30,
(In millions)		2016		2015
MGE Power Elm Road	$	11.1	$	12.4
MGE Power West Campus		5.4		5.5
MGE Transco(a)		1.4		1.9

(a)

MGE's ownership interest declined below a majority in July 2016 as a result of continued funding of ATC capital contributions by MGE Energy. As a result of the change in majority ownership in MGE Transco in July 2016, MGE deconsolidated the noncontrolling interest within MGE's financial statements for MGE Energy's proportionate share of the equity in MGE Transco. No gain or loss was recognized in July 2016 due to MGE ceasing to have a controlling financial interest. See Footnote 3 of the Notes to Consolidated Financial Statements for additional information.

Contractual Obligations and Commercial Commitments - MGE Energy and MGE

There were no material changes, other than from the normal course of business, to MGE Energy's and MGE's contractual obligations (representing cash obligations that are considered to be firm commitments) and commercial commitments (representing commitments triggered by future events) during the nine months ended September 30, 2016, except as noted below. Further discussion of the contractual obligations and commercial commitments is included in Footnote 18 of Notes to Consolidated Financial Statements, and "Contractual Obligations and Commercial Commitments for MGE Energy and MGE" under "Management's Discussion and Analysis of Financial Condition and Results of Operations" in MGE Energy's and MGE's 2015 Annual Report on Form 10-K.

Purchase Contracts - MGE Energy and MGE

See Footnote 7.c. of Notes to Consolidated Financial Statements for a description of commitments at September 30, 2016 that MGE Energy and MGE have entered with respect to various commodity supply, transportation, and storage contracts to meet their obligations to deliver electricity and natural gas to customers.

Liquidity and Capital Resources

MGE Energy and MGE have adequate liquidity to fund future operations and capital expenditures over the next twelve months. Available resources include cash and cash equivalents, operating cash flows, liquid assets, borrowing capacity under revolving credit facilities, and access to equity and debt capital markets.

Cash Flows

The following summarizes cash flows for MGE Energy and MGE during the nine months ended September 30, 2016 and 2015:

		MGE Energy				MGE
(In thousands)		2016		2015		2016		2015
Cash provided by/(used for):
Operating activities	$	129,192	$	122,655	$	128,959	$	130,107
Investing activities		(64,619)		(53,181)		(64,407)		(52,934)
Financing activities		(34,372)		(40,962)		(59,754)		(39,764)

Cash Provided by Operating Activities

MGE Energy

MGE Energy's consolidated net cash provided by operating activities is derived mainly from the electric and gas operations of its principal subsidiary, MGE.

Cash provided by operating activities for the nine months ended September 30, 2016, was $129.2 million, an increase of $6.5 million when compared to the same period in the prior year.

42

MGE Energy's net income increased $0.9 million for the nine months ended September 30, 2016, when compared to the same period in the prior year.

In both 2016 and 2015, MGE received a $10.0 million refund from the IRS for the 2015 and 2014 tax years, respectively. Excluding the 2016 and 2015 refund, MGE Energy's federal and state taxes paid decreased $2.4 million during the nine months ended September 30, 2016, when compared to the same period in the prior year.

Working capital accounts (excluding prepaid and accrued taxes) resulted in $7.6 million in cash provided by operating activities for the nine months ended September 30, 2016, primarily due to decreased inventories, decreased unbilled revenues, increased accounts payable, and increased other current liabilities, partially offset by increased receivables. The increase in current liabilities includes a fuel credit, approved in August 2015, of $6.3 million that customers received on their bill January through September 2016 and a one-time fuel credit, approved in July 2016, of $15.5 million that customers received on their bill in September 2016.

Working capital accounts (excluding prepaid and accrued taxes) resulted in $2.5 million in cash used for operating activities for the nine months ended September 30, 2015, primarily due to increased inventories, decreased accounts payable, and decreased other current liabilities, partially offset by decreased receivables and decreased unbilled revenues.

For the nine months ended September 30, 2015, MGE deferred $7.6 million in fuel related cost savings to be returned to customers and returned $0.7 million of total electric fuel-related savings on customer bills.

MGE

Cash provided by operating activities for the nine months ended September 30, 2016, was $129.0 million, a decrease of $1.1 million when compared to the same period in the prior year.

Net income increased $0.7 million for the nine months ended September 30, 2016, when compared to the same period in the prior year.

In both 2016 and 2015, MGE received a $10.0 million refund from the IRS for the 2015 and 2014 tax years, respectively. Excluding the 2016 and 2015 refund, MGE's federal and state taxes paid to MGE Energy increased $3.6 million during the nine months ended September 30, 2016, when compared to the same period in the prior year.

Working capital accounts (excluding prepaid and accrued taxes) resulted in $7.7 million in cash provided by operating activities for the nine months ended September 30, 2016, primarily due to decreased inventories, decreased unbilled revenues, increased accounts payable, and increased other current liabilities, partially offset by increased receivables. The increase in current liabilities includes a fuel credit, that was approved in August 2015, of $6.3 million that customers received on their bill January through September 2016 and $15.5 million of deferred fuel related cost savings to be returned to customers.

Working capital accounts (excluding prepaid taxes and accrued taxes) resulted in $6.3 million in cash provided by operating activities for the nine months ended September 30, 2015, primarily due to decreased receivables and decreased unbilled revenues, partially offset by increased inventories and decreased accounts payable.

For the nine months ended September 30, 2015, MGE deferred $7.6 million in fuel related cost savings to be returned to customers and returned $0.7 million of total electric fuel-related savings on customer bills.

Cash Used for Investing Activities

MGE Energy

MGE Energy's cash used for investing activities increased $11.4 million for the nine months ended September 30, 2016, when compared to the same period in the prior year.

Capital expenditures for the nine months ended September 30, 2016, were $62.3 million. This amount represents an increase of $10.0 million from the expenditures made in the same period in the prior year. This increase primarily reflects increased expenditures on electric and gas distribution assets.

43

Capital contributions in ATC and other investments increased $1.3 million for the nine months ended September 30, 2016, when compared to the same period in the prior year.

MGE

MGE's cash used for investing activities increased $11.5 million for the nine months ended September 30, 2016, when compared to the same period in the prior year.

Capital expenditures for the nine months ended September 30, 2016, were $62.3 million. This amount represents an increase of $10.0 million from the expenditures made in the same period in the prior year. This increase primarily reflects increased expenditures on electric and gas distribution assets.

Capital contributions in ATC and other investments increased $1.1 million for the nine months ended September 30, 2016, when compared to the same period in the prior year.

Cash Used for Financing Activities

MGE Energy

Cash used for MGE Energy's financing activities was $34.4 million for the nine months ended September 30, 2016, compared to $41.0 million of cash used for MGE Energy's financing activities in the nine months ended September 30, 2015.

For the nine months ended September 30, 2016, dividends paid were $31.1 million compared to $29.8 million in the prior year. This increase was a result of a higher dividend per share ($0.898 vs. $0.860).

For the nine months ended September 30, 2015, net short term debt repayments were $7.0 million. There were no short term debt repayments in the current year.

MGE

During the nine months ended September 30, 2016, cash used for MGE's financing activities was $59.8 million compared to $39.8 million of cash used for MGE's financing activities in the prior year.

Dividends paid from MGE to MGE Energy were $40.0 million for the nine months ended September 30, 2016. For the nine months ended September 30, 2015, cash dividends paid from MGE to MGE Energy were $20.0 million.

Distributions to parent from noncontrolling interest, which represent distributions from MGE Power Elm Road and MGE Power West Campus to MGE Energy, were $18.1 million for the nine months ended September 30, 2016, compared to $12.0 million in the prior year.

For the nine months ended September 30, 2016, equity contributions received from MGE Power West Campus and MGE Transco were $1.6 million compared to $3.1 million in the prior year.

For the nine months ended September 30, 2015, net short term debt repayments were $7.0 million. There were no short term debt repayments in the current year.

Capitalization Ratios^(a)

MGE Energy's capitalization ratios were as follows:

	MGE Energy
	September 30, 2016	December 31, 2015
Common shareholders' equity	65.0 %	63.8 %
Long-term debt(b)	35.0 %	36.2 %

(a)

Reflects application of new accounting pronouncement. See Footnote 11.c. of the Notes to Consolidated Financial Statements for additional information regarding the treatment of debt issuance costs.

(b)

Includes the current portion of long-term debt.

44

MGE Energy's and MGE's Capital Requirements

MGE Energy's and MGE's liquidity are primarily affected by their capital requirements. During the nine months ended September 30, 2016, capital expenditures for MGE Energy and MGE totaled $62.3 million, which included $59.6 million of capital expenditures for utility operations.

MGE priced $40 million of new long-term unsecured debt in October 2016, with funding expected to occur in mid-January 2017. The proceeds of this debt financing will be used to refinance $30 million of maturing medium-term notes and assist with the financing of additional capital expenditures. See Footnote 2 of the Notes to Consolidated Financial Statements for further discussion.

Credit Ratings

MGE Energy's and MGE's access to the capital markets, including, in the case of MGE, the commercial paper market, and their respective financing costs in those markets, may depend on the credit ratings of the entity that is accessing the capital markets.

None of MGE Energy's or MGE's borrowings are subject to default or prepayment as a result of a downgrading of credit ratings, although a downgrading of MGE's credit ratings could increase fees and interest charges under both MGE Energy's and MGE's credit agreements.

Environmental Matters

The following discussion is limited to updates or developments in environmental matters that occurred during the nine months ended September 30, 2016. Further discussion of environmental matters is included in MGE Energy's and MGE's 2015 Annual Report on Form 10-K and Footnote 7.a. of Notes to Consolidated Financial Statements in this Report.

Sulfur Dioxide (SO₂) NAAQS

In March 2015, the EPA identified MGE's Columbia Plant in Columbia County as a large stationary source of SO₂ that may exceed the one hour SO₂ NAAQS standard and was subject to a State of Wisconsin proposed county attainment/nonattainment determination. In September 2015, Wisconsin sent a letter to the EPA proposing that Columbia County be designated as being in attainment for SO₂ NAAQS based on recent modeling demonstrating that SO₂ pollution controls on the Columbia Plant had brought the county into attainment. In June 2016, the EPA issued a final rule classifying Columbia County as an unclassified/ attainment area. In addition to the EPA's actions on the SO₂ NAAQS, the WDNR has revised its state rules to incorporate the one hour SO₂ standard. MGE does not anticipate any material costs from this rule.

Clean Air Visibility Rule (CAVR)

Columbia may be subject to the best available retrofit technology (BART) regulations, a subsection of the EPA's Clean Air Visibility Rule (CAVR), which may require pollution control retrofits. Columbia's pollution control upgrades and the EPA's stance that compliance with the CSAPR equals compliance with BART should mean that Columbia will not need to do additional work to meet BART requirements. In February 2016, the EPA submitted a proposed revision to the rule. The proposed revision would move state plan due dates from July 2018 to July 2021. This would allow for states to coordinate their CAVR compliance with other compliance efforts. If this proposed revision is finalized, it would reduce the chances that CAVR will be material for MGE. At this time, however, the BART regulatory obligations, compliance strategies, and costs remain uncertain due to the continued legal challenges surrounding CSAPR and CAVR.

EPA's Cross-State Air Pollution Rule: Proposed Ozone Season Update based on 2008 Ozone NAAQS

The EPA's Cross-State Air Pollution Rule (CSAPR) is an interstate air pollution transport rule designed to reduce ozone and fine particulate (PM2.5) air levels in areas that the EPA has determined are being affected by pollution from neighboring and upwind states. This is accomplished in the CSAPR through a reduction in SO₂ and Nitrogen Oxides (NO_x) from fossil-fuel fired power plants. NO_x and SO₂ contribute to fine particulate pollution, and NO_x contributes to ozone formation. Reductions are achieved through a cap and trade system. Individual plants can meet their caps through modifications and/or buying allowances on the market.

In October 2016, the EPA finalized an update to the existing CSAPR. The CSAPR Rule Update is designed to incorporate 2008 Ozone NAAQS attainment levels (the original CSAPR is based on 1997 Ozone NAAQS levels) in 22 states, including Wisconsin, by further limiting ozone season NO_x levels through a reduction in NO_x allowances. The

45

rule also includes revisions to CSAPR that are designed to address issues remaining from the D.C. Circuit remand of CSAPR, including Wisconsin's inclusion in the NO_x ozone season portion of the rule.

The rule will further reduce summertime NO_x emissions from power plants starting in 2017. Initial review of this rule shows that we will likely need to buy NO_x Ozone Season allowances to comply with the rule. MGE is still evaluating the impact of this rule on our operations, and we are unable to determine the full extent of the rule's impacts at this time. Depending on the cost of allowances, this requirement could be material for MGE.

Other Matters

ATC

In 2013, several parties filed a complaint with the FERC seeking to reduce the base return on equity (ROE) used by MISO transmission owners, including ATC, "due to changes in the capital markets." The complaint alleged that the MISO ROE should not exceed 9.15%, the equity components of hypothetical capital structures should be restricted to 50%, and the relevant incentive ROE adders should be discontinued. At the time, MISO's base ROE was 12.38% and ATC's base ROE was 12.2%. In September 2016, FERC issued an order reducing the transmission owners' base ROE to 10.32% for the period of November 2013 through February 2015. In February 2015, a second complaint was filed with the FERC requesting a reduction in the base ROE used by MISO transmission owners, including ATC, to 8.67%, with a refund effective date retroactive to the filing date of the complaint. In June 2016, an administrative law judge issued an initial decision for the second complaint that would reduce the transmission owner's base ROE to 9.7%. The initial decision will be reviewed by FERC and it is anticipated FERC will issue an order on this issue by mid-2017.

In January 2015, FERC accepted the transmission owner's request for a 50 basis-point incentive ROE adder for participating in MISO. The adder became effective January 6, 2015, subject to refund, and FERC accepted the transmission owner's request to defer collection of the adder pending the outcome of the first ROE complaint proceeding.

Any change to ATC's ROE could result in lower equity earnings and distributions from ATC in the future. Our share of ATC's earnings reflects a pre-tax charge of $0.7 million and $0.1 million for the three months ended September 30, 2016 and 2015, respectively, and a pre-tax charge of $1.8 million and $0.9 million for the nine months ended September 30, 2016 and 2015, respectively, recorded by ATC for this matter representing its estimate of its refund liability. We derived approximately 5.8% and 6.4% of our net income for the nine months ended September 30, 2016 and 2015, respectively, from our investment in ATC.

New Accounting Principles

See Footnote 11 of Notes to Consolidated Financial Statements for discussion of new accounting pronouncements.

46

Item 3. Quantitative and Qualitative Disclosures About Market Risk.

MGE Energy and MGE are potentially exposed to market risk associated with interest rates, commodity prices, and equity returns. MGE currently has no exposure to foreign currency risk. MGE manages some risk exposure through risk management policies and the use of derivative instruments. MGE's risk management policy prohibits speculative trading transactions.

Commodity Price Risk

MGE has commodity price risk exposure with respect to the price of natural gas, electricity, coal, emission credits, and oil. MGE's electric operations burn natural gas in several of its peaking power plants and, in many cases, the cost of purchased power is tied to the cost of natural gas. MGE employs established policies and procedures to reduce the market risks associated with changing commodity prices. MGE's commodity risks are somewhat mitigated by the current ratemaking process in place for recovering electric fuel cost, purchased energy costs, and the cost of natural gas.

MGE's electric fuel costs are subject to fuel rules established by the PSCW. The fuel rules require the PSCW and Wisconsin utilities to defer electric fuel-related costs that fall outside a symmetrical cost tolerance band. Any over/under recovery of the actual costs is determined on an annual basis and is adjusted in future billings to electric retail customers. Under the electric fuel rules, MGE is required to defer the benefit of lower costs if the actual electric fuel costs fall outside the lower end of the range and is required to defer costs, less any excess revenues, if the actual electric fuel costs exceed the upper end of the range. Excess revenues are defined as revenues in the year in question that provide MGE with a greater return on common equity than authorized by the PSCW in MGE's latest rate order. The range is defined by the PSCW and has been modified throughout the years based on market conditions and other relevant factors. Currently, MGE is subject to a plus or minus 2% range. MGE assumes the risks and benefits of variances that are within the cost tolerance band. For 2016, fuel and purchased power costs included in MGE's base fuel rates are $108.2 million. See Footnote 9.b. of the Notes to Consolidated Financial Statements for additional information.

MGE recovers the cost of natural gas in its gas utility segment through the purchased gas adjustment clause (PGA). Under the PGA, MGE is able to pass through to its gas customers the cost of gas.

MGE also reduces price risk caused by market fluctuations via physical contracts and financial derivative contracts, including futures, swaps, options, forwards, and other contractual commitments. The maximum length of time over which cash flows related to energy commodities can be hedged under applicable PSCW approvals is four years.

MGE has financial gas and electric commodity contracts to hedge commodity price risk in the gas and electric utility segments. These contracts are primarily comprised of exchange-traded option and future contracts. MGE also holds FTRs, which are used to hedge the risk of increased transmission congestion charges. At September 30, 2016, the fair value of these instruments exceeded their cost basis by $0.9 million. Under the PGA clause and electric fuel rules, MGE may include in the costs of fuel (natural gas or power) the costs and benefits of the aforementioned fuel price risk management tools. Because these costs/benefits are recoverable, the related unrealized loss/gain has been deferred on the consolidated balance sheets as a regulatory asset/liability.

MGE has also entered into a purchased power agreement that provides MGE with firm capacity and energy that began on June 1, 2012, and ends on May 31, 2022 (the "base term"). The agreement also allows MGE an option to extend the contract after the base term. The agreement is considered a derivative contract and is recognized at its fair value on the consolidated balance sheet. However, the derivative qualifies for regulatory deferral and is recognized with a corresponding regulatory asset or liability depending on whether the fair value is in a loss or gain position. The fair value of the contract at September 30, 2016, reflects a loss position of $50.5 million.

Interest Rate Risk

Both MGE Energy and MGE may have short term borrowings at varying interest rates. MGE issues commercial paper for its short-term borrowings, while MGE Energy draws from its current credit facility to meet its short-term borrowing needs. Borrowing levels vary from period to period depending upon capital investments and other factors. Future short-term interest expense and payments will reflect both future short-term interest rates and borrowing levels. MGE Energy and MGE manage interest rate risk by limiting their variable rate exposure and continually monitoring the effects of market changes on interest rates. MGE is not exposed to changes in interest rates on a substantial portion of its long-term debt until that debt matures and is refinanced at market rates.

47

Equity Price Risk - Pension-Related Assets

MGE currently funds its liabilities related to employee benefits through trust funds. These funds, which include investments in debt and equity securities, are managed by various investment managers. Changes in market value of these investments can have an impact on the future expenses related to these liabilities.

Credit Risk - Counterparty

Credit risk is the loss that may result from counterparty nonperformance. MGE is exposed to credit risk primarily through its merchant energy business. MGE uses credit policies to manage its credit risk, which include utilizing an established credit approval process, monitoring counterparty limits, employing credit mitigation measures such as collateral or prepayment arrangements, and using netting agreements.

Due to the possibility of extreme volatility in the prices of energy commodities and derivatives, the market value of contractual positions with individual counterparties could exceed established credit limits or collateral provided by those counterparties. If such a counterparty were then to fail to perform its obligations under its contract (for example, fail to deliver the electricity MGE originally contracted for), MGE could sustain a loss that could have a material impact on its financial results.

Additionally, if a counterparty were to default and MGE were to liquidate all contracts with that entity, MGE's credit loss would include the loss in value of mark-to-market contracts; the amount owed for settled transactions; and additional payments, if any, to settle unrealized losses on accrual contracts. As of September 30, 2016, no counterparties have defaulted.

MGE is obligated to provide service to all electric and gas customers within its respective franchised territories. MGE's franchised electric territory includes a 316 square-mile area in Dane County, Wisconsin, and MGE's franchised gas territory includes a service area covering 1,682 square miles in Wisconsin. Based on results for the year ended December 31, 2015, no one customer constituted more than 10% of total operating revenues for MGE Energy and MGE. Credit risk for electric and gas is managed by MGE's credit and collection policies, which are consistent with state regulatory requirements.

Cash, cash equivalents, and customer accounts receivable are the financial instruments that potentially subject MGE Energy and MGE to concentrations of credit risk. MGE Energy and MGE place their cash and cash equivalents with high credit-quality financial institutions. MGE has limited concentrations of credit risk from customer accounts receivable because of the large number of customers and relatively strong economy in its service territory.

48

Item 4. Controls and Procedures.

During the third quarter of 2016, each registrant's management, including the principal executive officer and principal financial officer, evaluated its disclosure controls and procedures related to the recording, processing, summarization, and reporting of information in its periodic reports that it files with the SEC. These disclosure controls and procedures have been designed to ensure that material information relating to that registrant, including its subsidiaries, is accumulated and made known to that registrant's management, including these officers, by other employees of that registrant and its subsidiaries as appropriate to allow timely decisions regarding required disclosure, and that this information is recorded, processed, summarized, evaluated, and reported, as applicable, within the time periods specified in the SEC's rules and forms. Due to the inherent limitations of control systems, not all misstatements may be detected. These inherent limitations include the realities that judgments in decision making can be faulty and breakdowns can occur because of simple error or mistake. Additionally, controls can be circumvented by the individual acts of some persons, by collusion of two or more people, or by management override of the control. Also, the registrants do not control or manage certain of their unconsolidated entities and thus, their access and ability to apply their procedures to those entities is more limited than is the case for their consolidated subsidiaries.

As of September 30, 2016, each registrant's principal executive officer and principal financial officer concluded that its disclosure controls and procedures were effective. Each registrant intends to strive continually to improve its disclosure controls and procedures to enhance the quality of its financial reporting.

During the quarter ended September 30, 2016, there were no changes in either registrant's internal controls over financial reporting that materially affected, or are reasonably likely to affect materially, that registrant's internal control over financial reporting.

49

PART II. OTHER INFORMATION.

Item 1. Legal Proceedings.

MGE Energy and MGE

MGE Energy and its subsidiaries, including MGE, from time to time are involved in various legal proceedings that are handled and defended in the ordinary course of business.

See Footnote 7.a. and 7.b. of Notes to Consolidated Financial Statements for more information.

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds.

Issuer Purchases of Equity Securities

Period	Total Number of Shares Purchased		Average Price Paid per Share	Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs*	Maximum number (or Approximate Dollar Value) of Shares That May Yet Be Purchased Under the Plans or Programs*
July 1-31, 2016	24,905	$	56.29	-	-
August 1-31, 2016	14,050		56.31	-	-
September 1-30, 2016	59,000		55.56	-	-
Total	97,955	$	55.85	-	-

* Under the Stock Plan, common stock shares deliverable to plan participants may be either newly issued shares or shares purchased on the open market, as determined from time to time by MGE Energy. In June 2009, MGE Energy switched to using open market purchases to provide shares to meet obligations to participants in the Stock Plan. The shares are purchased on the open market through a securities broker-dealer and then are reissued under the Stock Plan as needed to meet share delivery requirements. The volume and timing of share repurchases in the open market depends upon the level of dividend reinvestment and optional share purchases being made from time to time by plan participants. As a result, there is no specified maximum number of shares to be repurchased and no specified termination date for the repurchases. All shares issued through the Stock Plan, whether newly issued or reissued following open market purchases, are issued and sold pursuant to a registration statement that was filed with the SEC and is currently effective.

Item 4. Mine Safety Disclosures.

Not applicable to MGE Energy and MGE.

Item 6. Exhibits.

12

Statement regarding computation of ratio of earnings to fixed charges for Madison Gas and Electric Company.

Certifications Pursuant to Rule 13a-14(a) and 15d-14(a) of the Securities and Exchange Act of 1934 as to the Quarterly Report on Form 10-Q for the quarter ended September 30, 2016, filed by the following officers for the following companies:

31.1

Filed by Gary J. Wolter for MGE Energy, Inc.

31.2

Filed by Jeffrey C. Newman for MGE Energy, Inc.

31.3

Filed by Gary J. Wolter for Madison Gas and Electric Company

31.4

Filed by Jeffrey C. Newman for Madison Gas and Electric Company

50

Certifications Pursuant to Section 1350 of Chapter 63 of Title 18 United States Code (Sarbanes-Oxley Act of 2002) as to the Quarterly Report on Form 10-Q for the quarter ended September 30, 2016, filed by the following officers for the following companies:

32.1

Filed by Gary J. Wolter for MGE Energy, Inc.

32.2

Filed by Jeffrey C. Newman for MGE Energy, Inc.

32.3

Filed by Gary J. Wolter for Madison Gas and Electric Company

32.4

Filed by Jeffrey C. Newman for Madison Gas and Electric Company

101

Interactive Data Files:

101.INS

XBRL Instance

101.SCH

XBRL Taxonomy Extension Schema

101.CAL

XBRL Taxonomy Extension Calculation

101.DEF

XBRL Taxonomy Extension Definition

101.LAB

XBRL Taxonomy Extension Labels

101.PRE

XBRL Taxonomy Extension Presentation

51

Signatures - MGE Energy, Inc.

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

	MGE ENERGY, INC.
Date: November 3, 2016	/s/ Gary J. Wolter
	Gary J. Wolter Chairman, President and Chief Executive Officer (Duly Authorized Officer)
Date: November 3, 2016	/s/ Jeffrey C. Newman
	Jeffrey C. Newman Senior Vice President, Chief Financial Officer, Secretary and Treasurer (Chief Financial and Accounting Officer)

52

Signatures - Madison Gas and Electric Company

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

	MADISON GAS AND ELECTRIC COMPANY
Date: November 3, 2016	/s/ Gary J. Wolter
	Gary J. Wolter Chairman, President and Chief Executive Officer (Duly Authorized Officer)
Date: November 3, 2016	/s/ Jeffrey C. Newman
	Jeffrey C. Newman Senior Vice President, Chief Financial Officer, Secretary and Treasurer (Chief Financial and Accounting Officer)

53

EX-12

EXHIBIT 12

Madison Gas and Electric Company

Ratio of Earnings to Fixed Charges

Nine Months Ended September 30, 2016

(In thousands)

Earnings
Net income before minority interest	$60,949
Equity earnings	(5,451)
Income distribution from equity investees	4,214
Minority interest in pretax income	(2,355)
Amortization of capitalized interest	396
Federal and state income taxes	34,803
Fixed charges	15,979
Total Earnings as Defined	$108,535
Fixed Charges
Interest expense on long-term debt and other	$14,516
Interest on rentals*	532
Amortization of debt issuance costs	678
AFUDC - borrowed funds	253
Total Fixed Charges	$15,979
Ratio of Earnings to Fixed Charges	6.79X

*Management believes that using one-third of the total rental expense

gives a reasonable approximation for actual interest on rentals.

EX-31

EXHIBIT 31.1

Certification Pursuant to Rule 13a-14(a) and 15d-14(a) of the Securities Exchange Act of 1934

I, Gary J. Wolter, certify that:

1.

I have reviewed this quarterly report on Form 10-Q of MGE Energy, Inc.;

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 registrant as of, and for, the periods presented in this report;

4.

The registrant's other certifying officer 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 registrant 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 registrant, 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 registrant'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 registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5.

The registrant's other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant'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 registrant'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 registrant's internal control over financial reporting.

/s/ Gary J. Wolter

Gary J. Wolter

Chairman, President and Chief Executive Officer

Date: November 3, 2016

EX-31

EXHIBIT 31.2

Certification Pursuant to Rule 13a-14(a) and 15d-14(a) of the Securities Exchange Act of 1934

I, Jeffrey C. Newman, certify that:

1.

I have reviewed this quarterly report on Form 10-Q of MGE Energy, Inc.;

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 registrant as of, and for, the periods presented in this report;

4.

The registrant's other certifying officer 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 registrant 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 registrant, 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 registrant'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 registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5.

The registrant's other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant'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 registrant'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 registrant's internal control over financial reporting.

/s/ Jeffrey C. Newman

Jeffrey C. Newman

Senior Vice President, Chief Financial Officer,

Secretary and Treasurer

Date: November 3, 2016

EX-31

EXHIBIT 31.3

Certification Pursuant to Rule 13a-14(a) and 15d-14(a) of the Securities Exchange Act of 1934

I, Gary J. Wolter, certify that:

1.

I have reviewed this quarterly report on Form 10-Q of Madison Gas and Electric Company;

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 registrant as of, and for, the periods presented in this report;

4.

The registrant's other certifying officer 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 registrant 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 registrant, 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 registrant'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 registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5.

The registrant's other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant'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 registrant'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 registrant's internal control over financial reporting.

/s/ Gary J. Wolter

Gary J. Wolter

Chairman, President and Chief Executive Officer

Date: November 3, 2016

EX-31

EXHIBIT 31.4

Certification Pursuant to Rule 13a-14(a) and 15d-14(a) of the Securities Exchange Act of 1934

I, Jeffrey C. Newman, certify that:

1.

I have reviewed this quarterly report on Form 10-Q of Madison Gas and Electric Company;

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 registrant as of, and for, the periods presented in this report;

4.

The registrant's other certifying officer 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 registrant 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 registrant, 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 registrant'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 registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5.

The registrant's other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant'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 registrant'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 registrant's internal control over financial reporting.

/s/ Jeffrey C. Newman

Jeffrey C. Newman

Senior Vice President, Chief Financial Officer,

Secretary and Treasurer

Date: November 3, 2016

EX-32

EXHIBIT 32.1

Certification Pursuant to 18 U.S.C. Section 1350,

as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

In connection with the quarterly report on Form 10-Q of MGE Energy, Inc. (the "Company"), for the period ended September 30, 2016, as filed with the Securities and Exchange Commission on the date hereof ("the Report"), I, Gary J. Wolter, Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, 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/ Gary J. Wolter

Gary J. Wolter

Chairman, President and Chief Executive Officer

Date: November 3, 2016

EX-32

EXHIBIT 32.2

Certification Pursuant to 18 U.S.C. Section 1350,

as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

In connection with the quarterly report on Form 10-Q of MGE Energy, Inc. (the "Company"), for the period ended September 30, 2016, as filed with the Securities and Exchange Commission on the date hereof ("the Report"), I, Jeffrey C. Newman, Chief Financial Officer of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, 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/ Jeffrey C. Newman

Jeffrey C. Newman

Senior Vice President, Chief Financial Officer,

Secretary and Treasurer

Date: November 3, 2016

EX-32

EXHIBIT 32.3

Certification Pursuant to 18 U.S.C. Section 1350,

as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

In connection with the quarterly report on Form 10-Q of Madison Gas and Electric Company (the "Company"), for the period ended September 30, 2016, as filed with the Securities and Exchange Commission on the date hereof ("the Report"), I, Gary J. Wolter, Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, 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/ Gary J. Wolter

Gary J. Wolter

Chairman, President and Chief Executive Officer

Date: November 3, 2016

EX-32

EXHIBIT 32.4

Certification Pursuant to 18 U.S.C. Section 1350,

as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

In connection with the quarterly report on Form 10-Q of Madison Gas and Electric Company (the "Company"), for the period ended September 30, 2016, as filed with the Securities and Exchange Commission on the date hereof ("the Report"), I, Jeffrey C. Newman, Chief Financial Officer of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, 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/ Jeffrey C. Newman

Jeffrey C. Newman

Senior Vice President, Chief Financial Officer,

Secretary and Treasurer

Date: November 3, 2016

XML

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2016	Oct. 31, 2016
Document And Entity Information [Line Items]
Entity Registrant Name	MGE Energy Inc
Entity Central Index Key	0001161728
Document Type	10-Q
Document Period End Date	Sep. 30, 2016
Amendment Flag	false
Trading Symbol	MGEE
Document Fiscal Year Focus	2016
Document Fiscal Period Focus	Q3
Current Fiscal Year End Date	--12-31
Entity Well known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Common Stock Shares Outstanding		34,668,370
MGE [Member]
Document And Entity Information [Line Items]
Entity Registrant Name	Madison Gas and Electric Company
Entity Central Index Key	0000061339
Entity Current Reporting Status	Yes
Entity Filer Category	Non-accelerated Filer
Entity Common Stock Shares Outstanding		17,347,894

XML

MGE Energy Inc Consolidated Statements of Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Operating Revenues:
Electric revenues	$ 119,147	$ 123,364	$ 313,452	$ 325,027
Gas revenues	17,570	17,431	92,368	108,028
Total Operating Revenues	136,717	140,795	405,820	433,055
Operating Expenses:
Fuel for electric generation	20,505	17,055	47,567	41,624
Purchased power	9,167	18,484	38,698	62,614
Cost of gas sold	4,314	4,299	43,247	57,868
Other operations and maintenance	40,146	38,721	123,839	120,895
Depreciation and amortization	11,212	11,182	33,358	33,026
Other general taxes	4,846	4,877	14,841	14,951
Total Operating Expenses	90,190	94,618	301,550	330,978
Operating Income	46,527	46,177	104,270	102,077
Other income, net	2,105	2,564	6,726	7,115
Interest expense, net	(5,038)	(5,036)	(14,995)	(15,135)
Income before income taxes	43,594	43,705	96,001	94,057
Income tax provision	(15,714)	(15,351)	(34,943)	(33,946)
Net Income	$ 27,880	$ 28,354	$ 61,058	$ 60,111
Earnings Per Share of Common Stock (basic and diluted)	$ 0.80	$ 0.82	$ 1.76	$ 1.73
Dividends per share of common stock	$ 0.308	$ 0.295	$ 0.898	$ 0.860
Weighted Average Shares Outstanding (basic and diluted)	34,668	34,668	34,668	34,668

XML

Madison Gas and Electric Company Consolidated Statements of Income (Unaudited) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Operating Revenues:
Electric revenues		$ 119,147	$ 123,364	$ 313,452	$ 325,027
Gas revenues		17,570	17,431	92,368	108,028
Total Operating Revenues		136,717	140,795	405,820	433,055
Operating Expenses:
Fuel for electric generation		20,505	17,055	47,567	41,624
Purchased power		9,167	18,484	38,698	62,614
Cost of gas sold		4,314	4,299	43,247	57,868
Other operations and maintenance		40,146	38,721	123,839	120,895
Depreciation and amortization		11,212	11,182	33,358	33,026
Other general taxes		4,846	4,877	14,841	14,951
Income tax provision		15,714	15,351	34,943	33,946
Total Operating Expenses		90,190	94,618	301,550	330,978
Operating Income		46,527	46,177	104,270	102,077
Other Income and Deductions:
Equity earnings in MGE Transco		2,023	2,398	6,023	6,568
Total Other Income and Deductions		2,105	2,564	6,726	7,115
Interest Expense:
Net Interest Expense		5,038	5,036	14,995	15,135
Net Income		27,880	28,354	61,058	60,111
MGE [Member]
Operating Revenues:
Electric revenues		119,152	123,371	313,470	325,044
Gas revenues		17,576	17,435	92,390	108,039
Total Operating Revenues		136,728	140,806	405,860	433,083
Operating Expenses:
Fuel for electric generation		20,507	17,057	47,574	41,630
Purchased power		9,171	18,488	38,709	62,624
Cost of gas sold		4,320	4,302	43,269	57,879
Other operations and maintenance		40,003	38,561	123,117	120,269
Depreciation and amortization		11,212	11,170	33,334	32,991
Other general taxes		4,846	4,877	14,841	14,951
Income tax provision		14,934	14,401	32,488	31,218
Total Operating Expenses		104,993	108,856	333,332	361,562
Operating Income	[1]	31,735	31,950	72,528	71,521
Other Income and Deductions:
AFUDC - equity funds		253	206	777	501
Equity earnings in MGE Transco		1,451	2,398	5,451	6,568
Income tax provision		(606)	(977)	(2,315)	(2,763)
Other income, net		(62)	(73)	(298)	(288)
Total Other Income and Deductions	[1]	1,036	1,554	3,615	4,018
Income before interest expense		32,771	33,504	76,143	75,539
Interest Expense:
Interest on long-term debt		5,079	5,123	15,284	15,410
Other interest, net		112	37	163	52
AFUDC - borrowed funds		(82)	(67)	(253)	(163)
Net Interest Expense		5,109	5,093	15,194	15,299
Net Income Including Noncontrolling Interest		27,662	28,411	60,949	60,240
Less Net Income Attributable to Noncontrolling Interest, net of tax		(5,695)	(6,633)	(17,899)	(19,812)
Net Income		$ 21,967	$ 21,778	$ 43,050	$ 40,428

[1] Amounts are shown net of the related tax expense, consistent with the presentation on the MGE Consolidated Statement of Income.

XML

MGE Energy Inc Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Comprehensive Income [Abstract]
Net Income	$ 27,880	$ 28,354	$ 61,058	$ 60,111
Other comprehensive income, net of tax:
Unrealized gain (loss) on available-for-sale securities, net of tax	11	(85)	(143)	(180)
Comprehensive Income	$ 27,891	$ 28,269	$ 60,915	$ 59,931

XML

Madison Gas and Electric Company Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Other comprehensive income, net of tax:
Unrealized gain (loss) on available-for-sale securities, net of tax	$ 11	$ (85)	$ (143)	$ (180)
Comprehensive Income	27,891	28,269	60,915	59,931
MGE [Member]
Net Income	27,662	28,411	60,949	60,240
Other comprehensive income, net of tax:
Unrealized gain (loss) on available-for-sale securities, net of tax	8	(28)	(31)	(137)
Total comprehensive income including noncontrolling interest	27,670	28,383	60,918	60,103
Less: Comprehensive income attributable to Noncontrolling Interest, net of tax	(5,695)	(6,633)	(17,899)	(19,812)
Comprehensive Income	$ 21,975	$ 21,750	$ 43,019	$ 40,291

XML

Consolidated Statements of Comprehensive Income (Unaudited) (Parantheticals) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Unrealized gain (loss) on available-for-sale securities, tax expense (benefit)	$ 8	$ (56)	$ (96)	$ (120)
MGE [Member]
Unrealized gain (loss) on available-for-sale securities, tax expense (benefit)	$ 5	$ (19)	$ (21)	$ (92)

XML

MGE Energy Inc Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Operating Activities:
Net Income	$ 61,058	$ 60,111
Items not affecting cash:
Depreciation and amortization	33,358	33,026
Deferred income taxes	15,041	7,370
Provision for doubtful receivables	583	(78)
Employee benefit plan expenses	165	2,500
Equity earnings in ATC	(6,023)	(6,568)
Other items	693	(154)
Changes in working capital items:
Decrease in current assets	33,740	39,034
Decrease in current liabilities	(3,147)	(18,231)
Dividend income from ATC	4,214	4,732
Cash contributions to pension and other postretirement plans	(13,134)	(12,460)
Other noncurrent items, net	2,644	13,373
Cash Provided by Operating Activities	129,192	122,655
Investing Activities:
Capital expenditures	(62,273)	(52,311)
Capital contributions to investments	(2,036)	(785)
Other	(310)	(85)
Cash Used for Investing Activities	(64,619)	(53,181)
Financing Activities:
Cash dividends paid on common stock	(31,115)	(29,816)
Repayment of long-term debt	(3,192)	(3,128)
Repayment of short-term debt	0	(7,000)
Other	(65)	(1,018)
Cash Used for Financing Activities	(34,372)	(40,962)
Change in cash and cash equivalents	30,201	28,512
Cash and cash equivalents at beginning of period	81,384	65,755
Cash and cash equivalents at end of period	111,585	94,267
Significant noncash investing activities:
Accrued capital expenditures	$ 10,603	$ 3,497

XML

Madison Gas and Electric Company Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Items not affecting cash:
Depreciation and amortization	$ 33,358	$ 33,026
Deferred income taxes	15,041	7,370
Provision for doubtful receivables	583	(78)
Employee benefit plan expenses	165	2,500
Equity earnings in MGE Transco	(6,023)	(6,568)
Other items	693	(154)
Changes in working capital items:
Decrease in current assets	33,740	39,034
Decrease in current liabilities	(3,147)	(18,231)
Dividend income from MGE Transco	4,214	4,732
Cash contributions to pension and other postretirement plans	(13,134)	(12,460)
Other noncurrent items, net	2,644	13,373
Cash Provided by Operating Activities	129,192	122,655
Investing Activities:
Capital expenditures	(62,273)	(52,311)
Capital contributions to investments	(2,036)	(785)
Other	(310)	(85)
Cash Used for Investing Activities	(64,619)	(53,181)
Financing Activities:
Repayment of long-term debt	(3,192)	(3,128)
Repayment of short-term debt	0	(7,000)
Other	(65)	(1,018)
Cash Used for Financing Activities	(34,372)	(40,962)
Change in cash and cash equivalents	30,201	28,512
Cash and cash equivalents at beginning of period	81,384	65,755
Cash and cash equivalents at end of period	111,585	94,267
Significant noncash investing activities:
Accrued capital expenditures	10,603	3,497
MGE [Member]
Operating Activities:
Net Income	60,949	60,240
Items not affecting cash:
Depreciation and amortization	33,334	32,991
Deferred income taxes	13,997	4,510
Provision for doubtful receivables	583	(78)
Employee benefit plan expenses	165	2,500
Equity earnings in MGE Transco	(5,451)	(6,568)
Other items	1,056	234
Changes in working capital items:
Decrease in current assets	32,557	46,806
Decrease in current liabilities	(1,783)	(15,876)
Dividend income from MGE Transco	4,214	4,732
Cash contributions to pension and other postretirement plans	(13,134)	(12,460)
Other noncurrent items, net	2,472	13,076
Cash Provided by Operating Activities	128,959	130,107
Investing Activities:
Capital expenditures	(62,273)	(52,311)
Capital contributions to investments	(1,598)	(533)
Other	(536)	(90)
Cash Used for Investing Activities	(64,407)	(52,934)
Financing Activities:
Cash dividends paid to parent by MGE	(40,000)	(20,000)
Distributions to parent from noncontrolling interest	(18,113)	(12,007)
Equity contribution received by noncontrolling interest	1,598	3,053
Repayment of long-term debt	(3,192)	(3,128)
Repayment of short-term debt	0	(7,000)
Other	(47)	(682)
Cash Used for Financing Activities	(59,754)	(39,764)
Change in cash and cash equivalents	4,798	37,409
Cash and cash equivalents at beginning of period	26,760	4,562
Cash and cash equivalents at end of period	31,558	41,971
Significant noncash investing activities:
Accrued capital expenditures	$ 10,603	$ 3,497

XML

Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Current Assets:
Cash and cash equivalents	$ 111,585	$ 81,384
Accounts receivable, less reserves	40,007	37,112
Other accounts receivables, less reserves	6,885	7,477
Unbilled revenues	13,885	25,008
Materials and supplies, at average cost	20,004	19,155
Fossil fuel, at average cost	9,113	13,110
Stored natural gas, at average cost	14,886	16,145
Prepaid taxes	12,617	35,252
Regulatory assets - current	7,207	9,538
Other current assets	13,115	10,570
Total Current Assets	249,304	254,751
Regulatory assets	146,305	148,199
Other deferred assets and other	6,361	6,377
Property, Plant, and Equipment:
Property, plant, and equipment, net	1,243,081	1,217,094
Construction work in progress	38,290	26,351
Total Property, Plant, and Equipment	1,281,371	1,243,445
Investments	76,731	73,631
Total Assets	1,760,072	1,726,403
Current Liabilities:
Long-term debt due within one year	4,333	4,266
Accounts payable	49,961	40,830
Accrued interest and taxes	4,538	5,067
Accrued payroll related items	9,783	11,215
Regulatory liabilities - current	3,564	9,515
Derivative liabilities	8,030	8,343
Other current liabilities	5,950	4,910
Total Current Liabilities	86,159	84,146
Other Credits:
Deferred income taxes	376,194	360,785
Investment tax credit - deferred	973	1,050
Regulatory liabilities	21,959	20,785
Accrued pension and other postretirement benefits	61,825	75,680
Derivative liabilities	42,460	44,935
Other deferred liabilities and other	66,450	61,820
Total Other Credits	569,861	565,055
Capitalization:
Common shareholders equity	720,258	690,458
Long-term debt	383,794	386,744
Total Capitalization	1,104,052	1,077,202
Commitments and contingencies (see Footnote 7)
Total Liabilities and Capitalization	1,760,072	1,726,403
MGE [Member]
Current Assets:
Cash and cash equivalents	31,558	26,760
Accounts receivable, less reserves	40,007	37,112
Affiliate receivables	565	542
Other accounts receivables, less reserves	6,816	7,390
Unbilled revenues	13,885	25,008
Materials and supplies, at average cost	20,004	19,155
Fossil fuel, at average cost	9,113	13,110
Stored natural gas, at average cost	14,886	16,145
Prepaid taxes	12,793	34,279
Regulatory assets - current	7,207	9,538
Other current assets	13,082	10,544
Total Current Assets	169,916	199,583
Affiliate receivable long-term	4,369	4,766
Regulatory assets	146,305	148,199
Other deferred assets and other	4,100	4,216
Property, Plant, and Equipment:
Property, plant, and equipment, net	1,242,459	1,216,415
Construction work in progress	38,290	26,351
Total Property, Plant, and Equipment	1,280,749	1,242,766
Investments	47,259	69,984
Total Assets	1,652,698	1,669,514
Current Liabilities:
Long-term debt due within one year	4,333	4,266
Accounts payable	49,949	40,742
Accrued interest and taxes	5,710	5,021
Accrued payroll related items	9,783	11,215
Regulatory liabilities - current	3,564	9,515
Derivative liabilities	8,030	8,343
Other current liabilities	5,901	4,791
Total Current Liabilities	87,270	83,893
Other Credits:
Deferred income taxes	367,066	352,626
Investment tax credit - deferred	973	1,050
Regulatory liabilities	21,959	20,785
Accrued pension and other postretirement benefits	61,825	75,680
Derivative liabilities	42,460	44,935
Other deferred liabilities and other	66,450	61,817
Total Other Credits	560,733	556,893
Capitalization:
Common shareholders equity	504,695	501,676
Noncontrolling interest	116,206	140,308
Total Equity	620,901	641,984
Long-term debt	383,794	386,744
Total Capitalization	1,004,695	1,028,728
Commitments and contingencies (see Footnote 7)
Total Liabilities and Capitalization	$ 1,652,698	$ 1,669,514

XML

Consolidated Balance Sheets (Unaudited) (Parentheticals) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Receivables, Net
Reserve for uncollectible accounts receivable	$ 2,815	$ 3,052
Reserve for uncollectible other accounts receivable	480	642
MGE [Member]
Receivables, Net
Reserve for uncollectible accounts receivable	2,815	3,052
Reserve for uncollectible other accounts receivable	$ 480	$ 642

XML

MGE Energy Inc Consolidated Statements of Common Equity (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income [Member]
Beginning balance, shares at Dec. 31, 2014		34,668
Beginning balance, value before adjustments at Dec. 31, 2014	$ 659,401			$ 308,007
Cumulative effect of new accounting principle at Dec. 31, 2014	(142)			(142)
Beginning balance, value at Dec. 31, 2014	659,259	$ 34,668	$ 316,268	307,865	$ 458
Increase (Decrease) In Stockholders' Equity [Roll Forward]
Net Income	60,111			60,111
Other comprehensive loss	(180)				(180)
Common stock dividends declared	(29,816)			(29,816)
Ending balance, shares at Sep. 30, 2015		34,668
Ending balance, value at Sep. 30, 2015	689,374	$ 34,668	316,268	338,160	278
Beginning balance, shares at Dec. 31, 2015		34,668
Beginning balance, value at Dec. 31, 2015	690,458	$ 34,668	316,268	339,165	357
Increase (Decrease) In Stockholders' Equity [Roll Forward]
Net Income	61,058			61,058
Other comprehensive loss	(143)				(143)
Common stock dividends declared	(31,115)			(31,115)
Ending balance, shares at Sep. 30, 2016		34,668
Ending balance, value at Sep. 30, 2016	$ 720,258	$ 34,668	$ 316,268	$ 369,108	$ 214

XML

Madison Gas and Electric Company Consolidated Statements of Common Equity (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Total	MGE [Member]	Common Stock [Member]	Common Stock [Member] MGE [Member]	Additional Paid-In Capital [Member] MGE [Member]	Retained Earnings [Member]	Retained Earnings [Member] MGE [Member]	Accumulated Other Comprehensive Income/(Loss) [Member]	Accumulated Other Comprehensive Income/(Loss) [Member] MGE [Member]	Noncontrolling Interest [Member] MGE [Member]
Beginning balance, shares at Dec. 31, 2014			34,668	17,348
Beginning balance, value before adjustments at Dec. 31, 2014		$ 612,260					$ 276,662
Cumulative effect of new accounting principle at Dec. 31, 2014	$ (142)	(142)				$ (142)	(142)
Beginning balance, value at Dec. 31, 2014		612,118		$ 17,348	$ 192,417		276,520		$ 144	$ 125,689
Increase (Decrease) In Stockholders' Equity [Roll Forward]
Net Income		60,240					40,428			19,812
Other comprehensive loss	(180)	(137)						$ (180)	(137)
Cash dividends paid to parent by MGE		(20,000)					(20,000)
Equity contribution received by noncontrolling interest		3,053								3,053
Distributions to parent from noncontrolling interest		(12,007)								(12,007)
Ending balance, shares at Sep. 30, 2015			34,668	17,348
Ending balance, value at Sep. 30, 2015		643,267		$ 17,348	192,417		296,948		7	136,547
Beginning balance, shares at Dec. 31, 2015			34,668	17,348
Beginning balance, value at Dec. 31, 2015		641,984		$ 17,348	192,417		291,888		23	140,308
Increase (Decrease) In Stockholders' Equity [Roll Forward]
Net Income		60,949					43,050			17,899
Other comprehensive loss	$ (143)	(31)						$ (143)	(31)
Cash dividends paid to parent by MGE		(40,000)					(40,000)
Equity contribution received by noncontrolling interest		1,598								1,598
Distributions to parent from noncontrolling interest		(18,113)								(18,113)
Deconsolidation of noncontrolling interest		(25,486)								(25,486)
Ending balance, shares at Sep. 30, 2016			34,668	17,348
Ending balance, value at Sep. 30, 2016		$ 620,901		$ 17,348	$ 192,417		$ 294,938		$ (8)	$ 116,206

XML

Consolidated Statements of Common Equity (Unaudited) (Parentheticals) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Consolidated Statements of Common Equity
Dividends per share of common stock	$ 0.308	$ 0.295	$ 0.898	$ 0.860

XML

Basis of Presentation

9 Months Ended

Sep. 30, 2016

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Basis of Presentation

Basis of Presentation - MGE Energy and MGE.

This report is a combined report of MGE Energy and MGE. References in this report to "MGE Energy" are to MGE Energy, Inc. and its subsidiaries. References in this report to "MGE" are to Madison Gas and Electric Company.

MGE Power Elm Road and MGE Power West Campus own electric generating assets and lease those assets to MGE. Both entities are variable interest entities under applicable authoritative accounting guidance. MGE is considered the primary beneficiary of these entities as a result of contractual agreements. As a result, MGE has consolidated MGE Power Elm Road and MGE Power West Campus. See Footnote 2 of Notes to Consolidated Financial Statements under Item 8, Financial Statements and Supplementary Data, of MGE Energy's and MGE's 2015 Annual Report on Form 10-K.

MGE Transco is jointly owned by MGE Energy and MGE.MGE's ownership interest in MGE Transco declined below a majority in July 2016. As a result of the change in majority ownership in MGE Transco in July 2016, MGE deconsolidated MGE Energy's proportionate share of the equity in MGE Transco. The change in consolidation was applied prospectively by reducing its investment and noncontrolling interest on MGE's consolidated financial statements.See Footnote 3 for further discussion.

The accompanying consolidated financial statements as of September 30,2016, and for the three and nine months ended, are unaudited, but include all adjustments that MGE Energy and MGE management consider necessary for a fair statement of their respective financial statements. All adjustments are of a normal, recurring nature except as otherwise disclosed. The year-end consolidated balance sheet information was derived from the audited balance sheet appearing in MGE Energy's and MGE's 2015 Annual Report on Form 10-K, but does not include all disclosures required by accounting principles generally accepted in the United States of America. These notes should be read in conjunction with the financial statements and the notes on pages 55 through 105 of the 2015 Annual Report on Form 10-K.

XML

Equity and Financing Arrangements

9 Months Ended

Sep. 30, 2016

Equity and Financing Arrangements Disclosure [Abstract]

Equity and Financing Arrangements

Equity and Financing Arrangements - MGE Energy.

a. Common Stock.

MGE Energy sells shares of its common stock through its Stock Plan. Those shares may be newly issued shares or shares that MGE Energy has purchased in the open market for resale to participants in the Stock Plan. All sales under the Stock Plan are covered by a shelf registration statement that MGE Energy filed with the SEC. For both the nine months endedSeptember 30,2016 and 2015, MGE Energy did not issue any new shares of common stock under the Stock Plan.

b. Dilutive Shares Calculation.

MGE Energy does not have any dilutive securities.

c. Long-term Debt- MGE Energy and MGE.

MGE has $30 million of medium-term notes maturing in 2017. MGE priced $40 million of new long-term unsecured debt in October 2016, with funding expected to occur in mid-January 2017. The new debt will carry an interest rate of 3.76% per annum over its 35-year term. The proceeds of this debt financing will be used to refinance the maturing $30 million medium-term notes and assist with the financing of additional capital expenditures. The covenants of this debt are expected to be substantially consistent with MGE's existing unsecured long-term debt. In accordance with applicable accounting guidance, MGE has classified the $30 million of maturing medium-term notes as long-term debt on the consolidated balance sheets for the quarter ended September 30, 2016.

XML

Investment in ATC

9 Months Ended

Sep. 30, 2016

Equity Method Investments and Joint Ventures [Abstract]

Investment in ATC

Investment in ATC - MGE Energy and MGE.

ATC owns and operates electric transmission facilities primarily in Wisconsin. MGE received an interest in ATC when it, like other Wisconsin electric utilities, contributed its electric transmission facilities to ATC as required by Wisconsin law. That interest is presently held by MGE Transco, which is jointly owned by MGE Energy and MGE.

MGE Transco has accounted for its investment in ATC under the equity method of accounting.For the three and nine months endedSeptember 30,2016 and 2015, MGE Transco recorded the following:

		Three Months Ended				Nine Months Ended
		September 30,				September 30,
(In thousands)		2016		2015		2016		2015
Equity earnings from investment in ATC	$	2,023	$	2,398	$	6,023	$	6,568
Dividends received from ATC		1,486		1,841		4,214		4,732
Capital contributions to ATC		888		177		1,598		533

MGE Transco's investment in ATC as of September 30,2016, and December 31, 2015, was $72.9 million and $69.5 million, respectively. As of September 30,2016, MGE's investment in MGE Transco was $46.8 million.

At September 30,2016, MGE Energy, the holding company, is the majority owner (50.5%), and MGE is the minority owner (49.5%) of MGE Transco. MGE's ownership interest declined below a majority in July 2016 as a result of continued funding of ATC capital contributions by MGE Energy. As a result of the change in majority ownership in MGE Transco in July 2016, MGE deconsolidated MGE Energy's proportionate share of the equity in MGE Transco. The change in consolidation was applied prospectively by reducing its investment and noncontrolling interest on MGE's consolidated financial statements. No gain or loss was recognized in July 2016 due to MGE ceasing to have a controlling financial interest. As of December 31, 2015, the noncontrolling interest on MGE's consolidated balance sheets was $23.6 million. For the three and nine months endedSeptember 30,2016 and 2015, MGE recorded the following amounts attributable to noncontrolling interest in MGE Transco:

		Three Months Ended				Nine Months Ended
		September 30,				September 30,
(In thousands)		2016		2015		2016		2015
Equity earnings from investment(a)	$	254	$	679	$	1,410	$	1,848
Dividends received from investment(a)		561		423		1,113		1,007
Capital contributions by noncontrolling interest		888		177		1,598		533

(a)Amounts reflected net of tax.

In June 2016, the PSCW accepted a staff recommendation to have MGE transfer its interest in ATC to MGE Energy. As a result, MGE's ownership interest in MGE Transco will be completely eliminated in favor of MGE Energy when the transfers are complete, which is required by December 31, 2022. The recommendation arose in the context of requests for regulatory approvals by several owners of ATC in connection with a reorganization of ATC designed to separate its existing Wisconsin-based transmission operations from its non-Wisconsin transmission development activities. The change will have no effect on MGE Energy's consolidated financial statements.

ATC's summarized financial data for the three and nine months endedSeptember 30,2016 and 2015, is as follows:

		Three Months Ended				Nine Months Ended
		September 30,				September 30,
(In thousands)		2016		2015		2016		2015
Operating revenues	$	158,126	$	164,515	$	476,591	$	482,043
Operating expenses		(80,271)		(78,059)		(241,034)		(238,336)
Other income, net		1,128		585		2,563		566
Interest expense, net		(24,624)		(23,655)		(73,714)		(72,310)
Earnings before members' income taxes	$	54,359	$	63,386	$	164,406	$	171,963

MGE receives transmission and other related services from ATC. During the three and nine months endedSeptember 30,2016, MGE recorded $7.4 million and $22.1 million, respectively, for transmission services received compared to $7.0 million and $21.1 million for the comparable periods in 2015. MGE also provides a variety of operational, maintenance, and project management services for ATC, which is reimbursed by ATC. As of September 30,2016 and December 31, 2015, MGE had a receivable due from ATC of $0.3 million and $0.2 million, respectively.

XML

Taxes

9 Months Ended

Sep. 30, 2016

Income Tax Disclosure [Abstract]

Taxes

Taxes - MGE Energy and MGE.

MGE Energy's effective income tax rates for the three and nine months endedSeptember 30,2016, were 36.1% and 36.4%, respectively, compared to 35.1% and 36.1% for the same periods in 2015. MGE's effective income tax rates for the three and nine months endedSeptember 30,2016, were 36.0% and 36.4%, respectively, compared to 35.1% and 36.1% for the same periods in 2015. The increase in the effective tax rates is due in part to a lower estimated domestic manufacturing deduction offset by higherestimated AFUDC equity earnings in 2016.

XML

Pension and Other Postretirement Plans

9 Months Ended

Sep. 30, 2016

Compensation and Retirement Disclosure [Abstract]

Pension and Other Postretirement Plans

Pension and Other Postretirement Plans - MGE Energy and MGE.

MGE maintains qualified and nonqualified pension plans, health care, and life insurance benefits. Additionally, MGE has defined contribution 401(k) benefit plans. MGE refined its methodology for using discount rates to measure the components of net periodic benefit cost for 2016. The refined methodology uses individual spot rates, instead of a weighted average of the yield curve spot rates, for measuring the service cost and interest cost components.

The following table presents the components of MGE Energy's and MGE's net periodic benefit costs recognized for the three and nine months endedSeptember 30,2016 and 2015. A portion of the net periodic benefit cost is capitalized within the consolidated balance sheets.

		Three Months Ended				Nine Months Ended
		September 30,				September 30,
(In thousands)		2016		2015		2016		2015
Pension Benefits
Components of net periodic cost:
Service cost	$	1,413	$	1,878	$	4,358	$	5,715
Interest cost		3,161		3,594		9,744		10,936
Expected return on assets		(5,724)		(5,930)		(17,646)		(18,045)
Amortization of:
Prior service cost		3		6		8		18
Actuarial loss		1,388		1,393		4,278		4,240
Net periodic cost	$	241	$	941	$	742	$	2,864
Postretirement Benefits
Components of net periodic (benefit) cost:
Service cost	$	361	$	194	$	1,084	$	580
Interest cost		753		392		2,258		1,176
Expected return on assets		(787)		(355)		(2,360)		(1,063)
Amortization of:
Transition obligation		1		-		3		1
Prior service benefit		(744)		(337)		(2,233)		(1,009)
Actuarial loss		178		133		533		397
Net periodic (benefit) cost	$	(238)	$	27	$	(715)	$	82

XML

Share-Based Compensation

9 Months Ended

Sep. 30, 2016

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Share-Based Compensation

Share-Based Compensation - MGE Energy and MGE.

Under MGE Energy'sPerformance Unit Plan and the Director Incentive Plan, eligible employees and non-employee directors may receive performance units that entitle the holder to receive a cash payment equal to the value of a designated number of shares of MGE Energy's common stock, plus dividend equivalent payments thereon, at the end of the set performance period.

In January 2016, 3,773units were granted under the Director Incentive Plan and are subject to a three-year graded vesting schedule. In February 2016, 19,055 units were granted under the Performance Unit Plan and are subject to a five-year graded vesting schedule. On the grant date, MGE Energy and MGE measure the cost of the employee services received in exchange for a performance unit award based on the current market value of MGE Energy common stock. The fair value of the awards is re-measured quarterly, including atSeptember 30,2016, as required by applicable accounting standards. Changes in fair value as well as the original grant are recognized as compensation cost. Since this amount is re-measured throughout the vesting period, the compensation cost is subject to variability.

For nonretirement eligible employees under the Performance Unit Plan, stock based compensation costs are accrued and recognized using the graded vesting method. Compensation cost for retirement eligible employees or employees that will become retirement eligible during the vesting schedule are recognized on an abridged horizon.

During the three and nine months endedSeptember 30,2016, MGE recorded $0.2 million and $2.0 million, respectively, in compensation expense as a result of awards under the plans compared to $0.3 million and $0.4 million for the comparable periods in 2015. In January 2016, cash payments of $1.2 million were distributed relating to awards that were granted in 2011. During the nine months endedSeptember 30,2015, MGE recorded a $0.2 million gain on 4,676 units forfeited. No forfeitures occurred during the nine months endedSeptember 30,2016. At September 30,2016, $5.8 million of outstanding awards are vested, and of this amount, no cash settlements have occurred.

XML

Commitments and Contingencies

9 Months Ended

Sep. 30, 2016

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

Commitments and Contingencies - MGE Energy and MGE.

a. Environmental.

MGE Energy and MGE are subject to frequently changing local, state, and federal regulations concerning air quality, water quality, land use, threatened and endangered species, hazardous materials handling, and solid waste disposal. These regulations affect the manner in which we conduct our operations, the costs of those operations, as well as capital and operating expenditures. Regulatory initiatives, proposed rules, and court challenges to adopted rules, have the potential to have a material effect on our capital expenditures and operating costs. These initiatives, proposed rules, and court challenges include:

EPA's Effluent Limitations Guidelines (ELG) and Standards for Steam Electric Power Generating Point Source Category

In November 2015, the EPA published its final rule setting Effluent Limitations Guidelines (ELG) for the steam electric power generating industry. The ELG rule establishes federal limits on the amount of metals and other pollutants that can be discharged in wastewater from new and existing steam electric generation plants. The ELG rule mostly covers pollutants that are captured by certain air pollution control systems and via wet ash handling systems at coal-burning power plants with units greater than 50 MW generation capacity. The operators of our Columbia and Elm Road Units have indicated that equipment upgrades may be necessary to comply with the new discharge standards. The rule will be applied to Wisconsin-based power plants as they renew their WPDES permits, beginning in 2018 but no later than 2023. Management believes that any compliance costs will be recovered in future rates based on previous treatment of environmental compliance projects.

EPA Cooling Water Intake Rules (Section 316(b))

Section 316(b) of the Clean Water Act requires that the cooling water intake structures at electric power plants meet best available technology standards so that mortality from entrainment (drawing aquatic life into a plant's cooling system) and impingement (trapping aquatic life on screens) are reduced. The EPA finalized its 316(b) rule for existing facilities in 2014. Section 316(b) requirements are implemented in Wisconsin through modifications to plants' WPDES permits, which govern plant wastewater discharges. WDNR is currently developing rules to implement the EPA 316(b) rule.

Our WCCF, Blount, and Columbia plants are considered existing plants under this rule. Our WCCF facility already employs a system that meets the 316(b) rule. Our Blount plant has conducted studies showing that it will likely be in compliance with this rule when its WPDES permit is renewed in 2017. The operator of our Columbia plant is conducting an intake study to demonstrate compliance with the 316(b) rule and/or identify design criteria needed to meet the new rule requirements prior to Columbia's 2017 WPDES permit renewal. The exact requirements at Blount and Columbia, however, will not be known until the WDNR finalizes its rule, approves the plant operators' approach, and those sites' WPDES permits are modified to account for this rule. Nonetheless, MGE expects that the 316(b) rule will not have material effects on its existing plants.

EPA's Greenhouse Gas (GHG) Reduction Guidelines under the Clean Air Act 111(d) Rule

In October 2015, the EPA published its Clean Power Plan (CPP) rule with an effective date of December 2015, setting guidelines and approval criteria for states to use in developing plans to control GHG emissions from existing fossil fuel-fired electric generating units (EGUs) and systems. In October 2015, the EPA also published a proposed federal implementation plan under the CPP rule. The proposed federal implementation plan is designed to provide mass-based and rate-based emissions trading options to serve as a model and/or resource for states that are adopting their own plans, or for use by the EPA in states that do not implement their own plans under the finalized CPP. Implementation of the rule is expected to have a direct impact on existing coal and natural gas fired generating units, including possible changes in dispatch and additional operating costs.

On February 9, 2016, the U.S. Supreme Court issued a stay blocking implementation of the CPP pending the Court's own review. The CPP may not be implemented until the Supreme Court lifts the stay, presumably after the courts ultimately resolve the underlying legality of the rule. Oral arguments were held before the D.C. Circuit on September 27, 2016 and a decision by the D.C. Circuit is expected in 2017.

Given the pending legal proceedings and the need for a yet-to-be-developed state implementation plan or finalization of the federal implementation plan, the nature and timing of any final requirements is subject to uncertainty. If the rule remains substantially in its present form, it is expected to have a material impact on MGE.

National Ambient Air Quality Standards (NAAQS)

The EPA's NAAQS regulations set ambient levels of six pollutants to protect sensitive populations (primary NAAQS) and the environment (secondary NAAQS) from the negative effects of exposure to these pollutants at higher levels. MGE is following EPA's efforts to update several NAAQS, including for particulate matter, nitrogen dioxide, sulfur dioxide, and ozone. Further discussion on ozone, sulfur dioxide, and nitrogen dioxide NAAQS follows. For additional information on the NAAQS process, see Footnote 18.c. of Notes to Consolidated Financial Statements under Item 8, Financial Statements and Supplementary Data, of MGE Energy's and MGE's 2015 Annual Report on Form 10-K.

Ozone NAAQS

In October 2015, the EPA revised the primary and secondary ozone NAAQS, lowering each to 70 ppb. The rule became effective in December 2015. Based on current ozone monitoring data, it appears that Milwaukee County (where our Elm Road Units are located) will likely not attain the lowered standards, and Dane and Columbia Counties (where our WCCF/Blount and Columbia Units are located, respectively) may attain them. Final attainment designations for these three counties will be based upon air monitoring data for years 2014-2016. The EPA will finalize the designations by October 1, 2017 based on air monitoring data for the years 2014-2016. Once these EPA designations are complete, the State of Wisconsin will need to develop implementation plans for each county designated as nonattainment, which could affect operations and emission control obligations for plants located within the nonattainment counties. The State of Wisconsin has joined a lawsuit filed by several states challenging the EPA's new ozone standard, alleging that the new standard is not attainable and the EPA is not properly considering background levels in setting its ozone attainment levels. MGE will continue to monitor the EPA's progress on attainment designations and related litigation to assess potential impacts at our facilities, particularly our Elm Road Units.

Sulfur Dioxide (SO₂) NAAQS

In March 2015, the EPA identified MGE's Columbia Plant in Columbia County as a large stationary source of SO₂ that may exceed the one hour SO₂ NAAQS standard and was subject to a State of Wisconsin proposed county attainment/nonattainment determination. In September 2015, Wisconsin sent a letter to the EPA proposing that Columbia County be designated as being in attainment for the SO₂ NAAQS based on recent modeling demonstrating that SO₂ pollution controls on the Columbia Plant had brought the county into attainment. In June 2016, the EPA issued a final rule classifying Columbia County as an unclassified/attainment area. In addition to the EPA's actions on the SO₂ NAAQS, the WDNR has revised its state rules to incorporate the one hour SO₂ standard. MGE does not anticipate any material costs from this rule.

Nitrogen Dioxide (NO₂) NAAQS

The WDNR has revised its state rules to incorporate the EPA's one hour NO₂ NAAQS rule that was finalized in 2010. The effective date of the state rule was August 1, 2016. The WDNR is currently seeking input from the public on ideas for implementing this one-hour standard. Wisconsin's NO₂ NAAQS rule will affect our stationary fossil-fuel generation sources by requiring that we demonstrate consistency with the NAAQS when applying for certain air permits. Sources that cannot demonstrate compliance with the NAAQS may be required to install emission controls or restrict operations. MGE will continue to monitor developments while the WDNR implements guidance for compliance with the one-hour NAAQS.

EPA's Cross-State Air Pollution Rule: Proposed Ozone Season Update based on 2008 Ozone NAAQS

The EPA's Cross-State Air Pollution Rule (CSAPR) is an interstate air pollution transport rule designed to reduce ozone and fine particulate (PM2.5) air levels in areas that the EPA has determined are being affected by pollution from neighboring and upwind states. This is accomplished in the CSAPR through a reduction in SO₂ and Nitrogen Oxides (NO_x) from fossil-fuel fired power plants. NO_x and SO₂ contribute to fine particulate pollution, and NO_x contributes to ozone formation. Reductions are achieved through a cap and trade system. Individual plants can meet their caps through modifications and/or buying allowances on the market.

In October 2016, the EPA finalized an update to the existing CSAPR. The CSAPR Rule Update is designed to incorporate 2008 Ozone NAAQS attainment levels (the original CSAPR is based on 1997 Ozone NAAQS levels) in 22 states, including Wisconsin, by further limiting ozone season NO_x levels through a reduction in NO_x allowances. The rule also includes revisions to CSAPR that are designed to address issues remaining from the D.C. Circuit remand of CSAPR, including Wisconsin's inclusion in the NO_x ozone season portion of the rule.

The rule will further reduce summertime (or Ozone Season) NO_x emissions from power plants starting in 2017. Initial review of this rule shows that we will likely need to buy NO_x Ozone Season allowances to comply with the rule. MGE is still evaluating the impact of this final rule on our operations, and we are unable to determine the full extent of the rule's impacts at this time. Depending on the cost of allowances, this requirement could be material for MGE.

Clean Air Visibility Rule (CAVR)

Columbia may be subject to the best available retrofit technology (BART) regulations, a subsection of the EPA's Clean Air Visibility Rule (CAVR), which may require pollution control retrofits. Columbia's pollution control upgrades and the EPA's stance that compliance with the CSAPR equals compliance with BART should mean that Columbia will not need to do additional work to meet BART requirements. In February 2016, the EPA submitted a proposed revision to the CAVR. The proposed revision would move state plan due dates from July 2018 to July 2021. This would allow for states to coordinate their CAVR compliance with other compliance efforts. If this proposed revision is finalized, it would reduce the chances that CAVR would be material for MGE. At this time, however, the BART regulatory obligations, compliance strategies, and costs remain uncertain due to the continued legal challenges surrounding CSAPR and CAVR.

Solid Waste

EPA's Coal Combustion Residuals Rule

In December 2014, the EPA finalized its Disposal of Coal Combustion Residuals from Electric Utilities (CCR) rule. The rule became effective in October 2015. It provides that coal ash will be regulated as a solid waste, and defines what ash use activities would be considered generally exempt beneficial reuse of coal ash. The rule also regulates landfills, ash ponds, and other surface impoundments for coal combustion residuals by regulating their design, location, monitoring, and operation. This portion of the rule is accomplished in phases to allow for sites with onsite storage and/or disposal to evaluate their compliance with the rule's design criteria. Landfills and impoundments that cannot meet design criteria will need to close formally within defined timeframes.

The Columbia and Elm Road Units co-owners and plant operators are working through the phased requirements to plan and implement changes necessary at those facilities to meet design criteria. Review of our Elm Road facility has indicated that the costs to comply with this rule are not expected to be significant. Columbia's operator has developed a preliminary implementation schedule for meeting the various deadlines spelled out in the rule. Costs at Columbia will be dependent on what is determined during the evaluation stage. Management believes compliance costs will be recovered in future rates based on previous treatment of environmental compliance projects.

b. Legal Matters.

MGE is involved in various legal matters that are being defended and handled in the normal course of business. MGE maintains accruals for such costs that are probable of being incurred and subject to reasonable estimation. The accrued amount for these matters is not material to the financial statements. MGE does not expect the resolution of these matters to have a material adverse effect on its consolidated results of operations, financial condition, or cash flows.

c. Purchase Contracts.

MGE Energy and MGE have entered into various commodity supply, transportation, and storage contracts to meet their obligations to deliver electricity and natural gas to customers. As of September 30,2016, the future commitments related to these purchase contracts were as follows:

(In thousands)		2016		2017		2018		2019		2020		Thereafter
Coal(a)	$	23,260	$	16,535	$	12,640	$	3,850	$	-	$	-
Natural gas
Transportation & storage(b)		6,005		20,858		20,644		19,482		15,225		31,767
Supply(c)		11,661		12,580		-		-		-		-
	$	40,926	$	49,973	$	33,284	$	23,332	$	15,225	$	31,767

(a)Total coal commitments for the Columbia and Elm Road Units, including transportation. Fuel procurement for MGE's jointly owned Columbia and Elm Road Units is handled by WPL and WEPCO, respectively, who are the operators of those facilities. If any minimum purchase obligations must be paid under these contracts, management believes these obligations would be considered costs of service and recoverable in rates.

(b)MGE's natural gas transportation and storage contracts require fixed monthly payments for firm supply pipeline transportation and storage capacity. The pricing components of the fixed monthly payments for the transportation and storage contracts are established by FERC but may be subject to change.Management expects to recover these costs in futurecustomer rates.

(c)These commitments include market-based pricing. Management expects to recover these costs in futurecustomer rates.

XML

Derivative and Hedging Instruments

9 Months Ended

Sep. 30, 2016

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivative and Hedging Instruments

Derivative and Hedging Instruments - MGE Energy and MGE.

a. Purpose.

As part of its regular operations, MGE enters into contracts, including options, swaps, futures, forwards, and other contractual commitments, to manage its exposure to commodity prices. To the extent that these contracts are derivatives, MGE assesses whether or not the normal purchases or normal sales exclusion applies. For contracts to which this exclusion cannot be applied, MGE Energy and MGE recognize such derivatives in the consolidated balance sheets at fair value. MGE's financial commodity derivative activities are conducted in accordance with its electric and gas risk management program, which is approved by the PSCW and limits the volume MGE can hedge with specific risk management strategies. The maximum length of time over which cash flows related to energy commodities can be hedged is four years. If the derivative qualifies for regulatory deferral, the derivatives are marked to fair value and are offset with a corresponding regulatory asset or liability. The deferred gain or loss is recognized in earnings in the delivery month applicable to the instrument. Gains and losses related to hedges qualifying for regulatory treatment are recoverable in gas rates through the PGA or in electric rates as a component of the fuel rules mechanism.

b. Notional Amounts.

The gross notional volume of open derivatives is as follows:

	September 30, 2016	December 31, 2015
Commodity derivative contracts	465,835 MWh	355,580 MWh
Commodity derivative contracts	6,157,500 Dth	5,037,500 Dth
FTRs	3,567 MW	2,000 MW

c.Financial Statement Presentation.

MGE purchases and sells exchange-traded and over-the-counter options, swaps, and future contracts. These arrangements are primarily entered into to help stabilize the price risk associated with gas or power purchases. These transactions are employed by both MGE's gas and electric segments. Additionally, as a result of the firm transmission agreements that MGE holds on electricity transmission paths in the MISO market,MGE holdsFTRs. An FTR is a financial instrument that entitles the holder to a stream of revenues or charges based on the differences in hourly day-ahead energy prices between two points on the transmission grid. The fair values of these instruments are offset with a corresponding regulatory asset/liability depending on whether they are in a net loss/gain position. Depending on the nature of the instrument, the gain or loss associated with these transactions will be reflected as cost of gas sold, fuel for electric generation, or purchased power expense in the delivery month applicable to the instrument. At September 30,2016, the fair value of exchange traded derivatives and FTRs exceeded their cost basis by $0.9 million. At December 31, 2015, the cost basis of exchange traded derivatives and FTRs exceeded their fair value by $0.8 million.

MGE is a party to a purchased power agreement that provides MGE with firm capacity and energy during a base term from June 1, 2012, through May 31, 2022. The agreement also allows MGE an option to extend the contract after the base term. The agreement is accounted for as a derivative contract and is recognized at its fair value on the consolidated balance sheets. However, the derivative qualifies for regulatory deferral and is recognized with a corresponding regulatory asset or liability depending on whether the fair value is in a loss or gain position. The fair value of the contract at September 30,2016, and December 31, 2015, reflects a loss position of $50.5 million and $53.3 million, respectively. The actual cost will be recognized in purchased power expense in the month of purchase.

The following table summarizes the fair value of the derivative instruments on the consolidated balance sheets. All derivative instruments in this table are presented on a gross basis and are calculated prior to the netting of instruments with the same counterparty under a master netting agreement as well as the netting of collateral. For financial statement purposes, MGE Energy and MGE have netted instruments with the same counterparty under a master netting agreement as well as the netting of collateral. As of September 30,2016 and December 31, 2015, MGE Energy and MGE had a receivable – margin account balance of $1.6million and $2.3 million, respectively, which is shown net of any collateral posted against derivative positions.

	Asset Derivatives			Liability Derivatives
(In thousands)	Balance Sheet Location		Fair Value	Balance Sheet Location		Fair Value
September 30, 2016
Commodity derivative contracts	Other current assets	$	1,023	Derivative liability (current)	$	351
Commodity derivative contracts	Other deferred charges		114	Derivative liability (long-term)		97
FTRs	Other current assets		230	Derivative liability (current)		-
PPA	N/A		N/A	Derivative liability (current)		8,030
PPA	N/A		N/A	Derivative liability (long-term)		42,460
December 31, 2015
Commodity derivative contracts	Other current assets	$	146	Derivative liability (current)	$	1,266
Commodity derivative contracts	Other deferred charges		144	Derivative liability (long-term)		70
FTRs	Other current assets		234	Derivative liability (current)		-
PPA	N/A		N/A	Derivative liability (current)		8,340
PPA	N/A		N/A	Derivative liability (long-term)		44,930

The following tables show the effect of netting arrangements for recognized derivative assets and liabilities that are subject to a master netting arrangement or similar arrangement on the consolidated balance sheets.

Offsetting of Derivative Assets
(In thousands)		Gross Amounts		Gross Amounts Offset in Balance Sheets		Collateral Posted Against Derivative Positions		Net Amount Presented in Balance Sheets
September 30, 2016
Commodity derivative contracts	$	1,137	$	(448)	$	-	$	689
FTRs		230		-		-		230
December 31, 2015
Commodity derivative contracts	$	290	$	(290)	$	-	$	-
FTRs		234		-		-		234

Offsetting of Derivative Liabilities
(In thousands)		Gross Amounts		Gross Amounts Offset in Balance Sheets		Collateral Posted Against Derivative Positions		Net Amount Presented in Balance Sheets
September 30, 2016
Commodity derivative contracts	$	448	$	(448)	$	-	$	-
PPA		50,490		-		-		50,490
December 31, 2015
Commodity derivative contracts	$	1,336	$	(290)	$	(1,038)	$	8
PPA		53,270		-		-		53,270

The following tables summarize the unrealized and realized gains (losses) related to the derivative instruments on the consolidated balance sheets at September 30,2016 and 2015, and the consolidated income statements for the three and nine months endedSeptember 30,2016 and 2015.

		2016				2015
(In thousands)		Current and Long-Term Regulatory Asset		Other Current Assets		Current and Long-Term Regulatory Asset		Other Current Assets
Three Months Ended September 30:
Balance at July 1,	$	50,521	$	659	$	56,048	$	455
Unrealized (gain) loss		(663)		-		4,036		-
Realized gain (loss) reclassified to a deferred account		17		(17)		(408)		408
Realized (loss) gain reclassified to income statement		(304)		46		(2,278)		(91)
Balance at September 30,	$	49,571	$	688	$	57,398	$	772
Nine Months Ended September 30:
Balance at January 1,	$	54,082	$	1,208	$	54,998	$	1,001
Unrealized loss		1,128		-		8,514		-
Realized (loss) gain reclassified to a deferred account		(1,417)		1,417		(1,700)		1,700
Realized (loss) gain reclassified to income statement		(4,222)		(1,937)		(4,414)		(1,929)
Balance at September 30,	$	49,571	$	688	$	57,398	$	772

		Realized Losses (Gains)
		2016				2015
(In thousands)		Fuel for Electric Generation/ Purchased Power		Cost of Gas Sold		Fuel for Electric Generation/ Purchased Power		Cost of Gas Sold
Three Months Ended September 30:
Commodity derivative contracts	$	45	$	-	$	862	$	(17)
FTRs		(703)		-		(233)		-
PPA		916		-		1,757		-
Nine Months Ended September 30:
Commodity derivative contracts	$	1,469	$	1,814	$	1,860	$	1,742
FTRs		(635)		-		(607)		-
PPA		3,511		-		3,348		-

MGE's commodity derivative contracts, FTRs, and PPA are subject to regulatory deferral. These derivatives are marked to fair value and are offset with a corresponding regulatory asset or liability. Realized gains and losses are deferred on the consolidated balance sheets and are recognized in earnings in the delivery month applicable to the instrument. As a result of the above described treatment, there are no unrealized gains or losses that flow through earnings.

The PPA has a provision that may require MGE to post collateral if MGE's debt rating falls below investment grade (i.e., below BBB-). The amount of collateral that it may be required to post varies from $20.0 million to $40.0 million, depending on MGE's nominated capacity amount. As of September 30,2016, no collateral is required to be, or has been, posted. Certain counterparties extend MGE a credit limit. If MGE exceeds these limits, the counterparties may require collateral to be posted. As of September 30,2016, no counterparties were in a net liability position. As of December 31, 2015, certain counterparties were in a net liability position of less than $0.1 million.

Nonperformance of counterparties to the non-exchange traded derivatives could expose MGE to credit loss. However, MGE enters into transactions only with companies that meet or exceed strict credit guidelines, and it monitors these counterparties on an ongoing basis to mitigate nonperformance risk in its portfolio. As of September 30,2016,no counterparties have defaulted.

XML

Rate Matters

9 Months Ended

Sep. 30, 2016

Regulated Operations [Abstract]

Rate Matters

Rate Matters - MGE Energy and MGE.

a. Rate Proceedings.

In April 2016, MGE filed an application with the PSCW requesting a 1.7% increase to electric rates and a 3.7% increase to gas rates for 2017. The proposed electric and gas rate increases cover costs primarily associated with the state's electric transmission and MGE's natural gas system infrastructure improvements.

In July 2015, the PSCW approved MGE's request to extend the current accounting treatment for transmission related costs through2016, conditioned upon MGE not filing a base rate case for 2016. This accounting treatment allows MGE to reflect any differential between transmission costs reflected in rates and actual costs incurred in its next rate case filing, which occurred as part of the April 2016 filing.

On December 23, 2014, the PSCW authorized MGE to increase 2015 rates for retail electric customers by 3.8% or $15.4 million and to decrease gas rates by 2.0% or $3.8 million. The increase in retail electric rates cover costs associated with the construction of emission-reduction equipment at Columbia, improvements and reliability of the state's electric transmission system, fuel and purchased power related to coal delivery costs, partially offset by lower cost as a result of market conditions for pension and postretirement benefit costs. The authorized return on common stock equity was 10.2%.

The PSCW also approved changes to customer rates and rate design for gas service that became effective January 1, 2015. Gas rate design consists of a fixed monthly customer charge and a variable charge tied to actual usage, in addition to the separate charge through the PGA for natural gas commodity costs. The change shifted more of the rate recovery to the monthly charge, reflecting the related fixed costs of providing gas services, and reduced the variable usage-based charge. Thus, gas net income is expected to be more evenly distributed during the year and less sensitive to weather.

b. Fuel Rules.

Fuel rules require the PSCW and Wisconsin utilities to defer electric fuel-related costs that fall outside a symmetrical cost tolerance band around the amount approved for a utility in its annual fuel proceedings. Any over/under recovery of the actual costs is determined on an annual basis and is adjusted in future billings to electric retail customers. The fuel rules bandwidth is currently set at plus or minus 2%. Under fuel rules, MGE would defer costs, less any excess revenues, if its actual electric fuel costs exceeded 102% of the electric fuel costs allowed in its latest rate order. Excess revenues are defined as revenues in the year in question that provide MGE with a greater return on common equity than authorized by the PSCW in MGE's latest rate order. Conversely, MGE is required to defer the benefit of lower costs if actual electric fuel costs were less than 98% of the electric fuel costs allowed in that order.

In August 2015, the PSCW approved a $0.00256/kWh fuel credit that began on September 1, 2015, and will continue throughout 2016. The fuel credit established a mechanism to return $10.9million of fuel savings to electric customers as a bill credit. MGE returned $2.6million of electric fuel-related savings to customers through bill credits during the period from September 1, 2015, through December 31, 2015. MGE returned $6.3million of electric fuel-related savings during the nine months endedSeptember 30,2016.

In January 2016, the PSCW lowered MGE's 2016 fuel rules monitored costs by $14.8 million as a result of continued lower projected fuel costs in 2016. Also, in March 2016, MGE filed its 2015 fuel plan reconciliation application showing an overcollection of 2015 fuel rules monitored costs. In July 2016, the PSCW issued a final order stating that MGE shall refund the additional fuel savings incurred during 2015 and 2016 for a total of $15.7million to its retail electric customers over a one-month period. In September 2016, MGE returned $15.5million to customers through bill credits.

As of September 30,2016, MGE has deferred $4.1 million of 2016 fuel savings that were in excess of the fuel savings included within the fuel credits referenced above. These costs will be subject to the PSCW's annual review of 2016 fuel costs, expected to be completed in 2017.

XML

Fair Value of Financial Instruments

9 Months Ended

Sep. 30, 2016

Fair Value Disclosures [Abstract]

Fair Value of Financial Instruments

Fair Value of Financial Instruments - MGE Energy and MGE.

Fair value is defined as the price that would be received to sell an asset or would be paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants at the measurement date. The accounting standard clarifies that fair value should be based on the assumptions market participants would use when pricing the asset or liability including assumptions about risk. The standard also establishes a three level fair value hierarchy based upon the observability of the assumptions used and requires the use of observable market data when available. The levels are:

Level 1 - Pricing inputs are quoted prices within active markets for identical assets or liabilities.

Level 2 - Pricing inputs are quoted prices within active markets for similar assets or liabilities; quoted prices for identical or similar instruments in markets that are not active; and model-derived valuations that are correlated with or otherwise verifiable by observable market data.

Level 3 - Pricing inputs are unobservable and reflect management's best estimate of what market participants would use in pricing the asset or liability.

a. Fair Value of Financial Assets and Liabilities Recorded at the Carrying Amount.

At September 30,2016, and December 31, 2015, the carrying amount of cash, cash equivalents, and outstanding commercial paper approximates fair market value due to the short maturity of those investments and obligations. The estimated fair market value of MGE Energy's and MGE's long-term debt is based on quoted market prices for similar financial instruments at September 30,2016, and December 31, 2015. Since long-term debt is not traded in an active market, it is classified as Level 2.The estimated fair market values of financial instruments are as follows:

		September 30, 2016				December 31, 2015
(In thousands)		Carrying Amount		Fair Value		Carrying Amount		Fair Value
MGE Energy
Assets:
Cash and cash equivalents	$	111,585	$	111,585	$	81,384	$	81,384
Liabilities:
Long-term debt(a)		392,316		463,849		395,508		435,767
MGE
Assets:
Cash and cash equivalents	$	31,558	$	31,558	$	26,760	$	26,760
Liabilities:
Long-term debt(a)		392,316		463,849		395,508		435,767
(a) Includes long-term debt due within one year. Excludes debt issuance costs and unamortized discount of
$4.2 million and $4.5 million at September 30, 2016, and December 31, 2015, respectively.

b. Recurring Fair Value Measurements.

The following table presents the balances of assets and liabilities measured at fair value on a recurring basis.

		Fair Value as of September 30, 2016
(In thousands)		Total		Level 1		Level 2		Level 3
MGE Energy
Assets:
Derivatives	$	1,367	$	917	$	-	$	450
Exchange-traded investments		520		520		-		-
Total Assets	$	1,887	$	1,437	$	-	$	450
Liabilities:
Derivatives	$	50,938	$	59	$	-	$	50,879
Deferred compensation		2,963		-		2,963		-
Total Liabilities	$	53,901	$	59	$	2,963	$	50,879
MGE
Assets:
Derivatives	$	1,367	$	917	$	-	$	450
Exchange-traded investments		97		97		-		-
Total Assets	$	1,464	$	1,014	$	-	$	450
Liabilities:
Derivatives	$	50,938	$	59	$	-	$	50,879
Deferred compensation		2,963		-		2,963		-
Total Liabilities	$	53,901	$	59	$	2,963	$	50,879

		Fair Value as of December 31, 2015
(In thousands)		Total		Level 1		Level 2		Level 3
MGE Energy
Assets:
Derivatives	$	234	$	-	$	-	$	234
Exchange-traded investments		759		759		-		-
Total Assets	$	993	$	759	$	-	$	234
Liabilities:
Derivatives(b)	$	54,316	$	581	$	-	$	53,735
Deferred compensation		3,145		-		3,145		-
Total Liabilities	$	57,461	$	581	$	3,145	$	53,735
MGE
Assets:
Derivatives	$	234	$	-	$	-	$	234
Exchange-traded investments		148		148		-		-
Total Assets	$	382	$	148	$	-	$	234
Liabilities:
Derivatives(b)	$	54,316	$	581	$	-	$	53,735
Deferred compensation		3,145		-		3,145		-
Total Liabilities	$	57,461	$	581	$	3,145	$	53,735
(b) These amounts are shown gross and exclude $1.0 million of collateral that was posted
against derivative positions with counterparties as of December 31, 2015.

No transfers were made in or out of Level 1 or Level 2 for the nine months endedSeptember 30,2016.

Investments include exchange-traded investment securities valued using quoted prices on active exchanges and are therefore classified as Level 1.

Derivatives include exchange-traded derivative contracts, over-the-counter transactions, a purchased power agreement, and FTRs. Most exchange-traded derivative contracts are valued based on unadjusted quoted prices in active markets and are therefore classified as Level 1. A small number of exchange-traded derivative contracts are valued using quoted market pricing in markets with insufficient volumes and are therefore considered unobservable and classified as Level 3. Transactions done with an over-the-counter party are on inactive markets and are therefore classified as Level 3. These transactions are valued based on quoted prices from markets with similar exchange traded transactions. FTRs are priced based upon monthly auction results for identical or similar instruments in a closed market with limited data available and are therefore classified as Level 3.

The purchased power agreement (see Footnote 8) was valued using an internally-developed pricing model and therefore is classified as Level 3. The model projects future market energy prices and compares those prices to the projected power costs to be incurred under the contract. Inputs to the model require significant management judgment and estimation. Future energy prices are based on a forward power pricing curve using exchange-traded contracts in the electric futures market, where such exchange-traded contracts exist, and upon calculations based on forward gas prices, where such exchange-traded contracts do not exist. A basis adjustment is applied to the market energy price to reflect the price differential between the market price delivery point and the counterparty delivery point. The historical relationship between the delivery points is reviewed and a discount (below 100%) or premium (above 100%) is derived. This comparison is done for both peak times when demand is high and off peak times when demand is low. If the basis adjustment is lowered, the fair value measurement will decrease, and if the basis adjustment is increased, the fair value measurement will increase.

The projected power costs anticipated to be incurred under the purchased power agreement are determined using many factors, including historical generating costs, future prices, and expected fuel mix of the counterparty. An increase in the projected fuel costs would result in a decrease in the fair value measurement of the purchased power agreement. A significant input that MGE estimates is the counterparty's fuel mix in determining the projected power cost. MGE also considers the assumptions that market participants would use in valuing the asset or liability. This consideration includes assumptions about market risk such as liquidity, volatility, and contract duration. The fair value model uses a discount rate that incorporates discounting, credit, and model risks.

The following table presents the significant unobservable inputs used in the pricing model.

	Model Input
Significant Unobservable Inputs	September 30, 2016	December 31, 2015
Basis adjustment:
On peak	93.3%	96.9%
Off peak	94.1%	95.1%
Counterparty fuel mix:
Internal generation	55% - 75%	60% - 75%
Purchased power	45% - 25%	40% - 25%

The deferred compensation plan allows participants to defer certain cash compensation into a notional investment account. These amounts are included within other deferred liabilities in the consolidated balance sheets of MGE Energy and MGE. The notional investments earn interest based upon the semiannual rate of U.S. Treasury Bills having a 26 week maturity increased by 1% compounded monthly with a minimum annual rate of 7%, compounded monthly. The notional investments are based upon observable market data, however, since the deferred compensation obligations themselves are not exchanged in an active market, they are classified as Level 2.

The following table summarizes the changes in Level 3 commodity derivative assets and liabilities measured at fair value on a recurring basis.

		Three Months Ended				Nine Months Ended
		September 30,				September 30,
(In thousands)		2016		2015		2016		2015
Beginning balance	$	(51,883)	$	(56,194)	$	(53,501)	$	(53,986)
Realized and unrealized gains (losses):
Included in regulatory liabilities (assets)		1,455		(888)		3,073		(3,096)
Included in other comprehensive income		-		-		-		-
Included in earnings		(278)		(2,285)		(4,250)		(4,497)
Included in current assets		-		-		-		-
Purchases		5,814		6,364		16,751		17,497
Sales		-		-		-		-
Issuances		-		-		-		-
Settlements		(5,537)		(4,079)		(12,502)		(13,000)
Transfers in and/or out of Level 3		-		-		-		-
Balance as of September 30,	$	(50,429)	$	(57,082)	$	(50,429)	$	(57,082)
Total gains (losses) included in earnings attributed to
the change in unrealized gains (losses) related to
assets and liabilities held at September 30,(c)	$	-	$	-	$	-	$	-

The following table presents total realized and unrealized gains (losses) included in income for Level 3 assets and liabilities measured at fair value on a recurring basis (c).

		Three Months Ended				Nine Months Ended
		September 30,				September 30,
(In thousands)		2016		2015		2016		2015
Purchased Power Expense	$	(278)	$	(2,302)	$	(4,250)	$	(4,515)
Cost of Gas Sold Expense		-		17		-		18
Total	$	(278)	$	(2,285)	$	(4,250)	$	(4,497)

(c)MGE's exchange-traded derivative contracts, over-the-counter party transactions, purchased power agreement, and FTRs are subject to regulatory deferral. These derivatives are therefore marked to fair value and are offset in the financial statements with a corresponding regulatory asset or liability.

XML

New Accounting Pronouncements

9 Months Ended

Sep. 30, 2016

New Accounting Pronouncements and Changes in Accounting Principles [Abstract]

New Accounting Pronouncements

New Accounting Pronouncements - MGE Energy and MGE.

a.Revenue from Contracts with Customers.

In May 2014, the FASB issued authoritative guidance within the Codification's Revenue Recognition topic that provides guidance on the recognition, measurement, and disclosure of revenue from contracts with customers. This authoritative guidance will become effective January 1, 2018. MGE Energy and MGE are currently assessing the impact this pronouncement will have on their financial statements.

b.Consolidation.

In February 2015, the FASB issued authoritative guidance within the Codification's Consolidation topic that provides guidance on the evaluation of certain legal entities for consolidation purposes. This authoritative guidance became effective January 1, 2016. This guidance had no impact on our financial statements.

c.Debt Issuance Costs.

In April 2015, the FASB issued authoritative guidance within the Codification's Interest topic that provides guidance on the presentation of debt issuance costs in financial statements. This authoritative guidance became effective January 1, 2016, and changed the presentation of debt issuance costs on the balance sheet. Prior to the authoritative guidance, debt issuance costs were treated as a deferred asset, and beginning January 1, 2016, these costs are included as a direct deduction to the related debt liability on the consolidated balance sheet. As of September 30, 2016, assets (other deferred assets and other) and liabilities (long-term debt) decreased approximately $4.0 million as a cumulative result of the guidance. In addition, this guidance was applied retrospectively to all prior periods presented, resulting in a decrease to assets and liabilities of $4.3 million for the year ended December 31, 2015.

d.Financial Instruments.

In January 2016, the FASB issued authoritative guidance within the Codification's Financial Instruments topic that provides guidance on the recognition and measurement of financial instruments. This authoritative guidance will become effective January 1, 2018, and will require equity investments to be measured at fair value with changes in fair value recognized in net income rather than in other comprehensive income. The impact of this guidance on our financial statements is not expected to be material.

e.Leases.

In February 2016, the FASB issued authoritative guidance within the Leases topic that provides guidance on the classification, recognition, measurement, and disclosure of leases. This authoritative guidance willbecome effective January 1, 2019. MGE Energy and MGE are currently assessing the impact this pronouncement will have on their financial statements.

XML

Segment Information

9 Months Ended

Sep. 30, 2016

Segment Reporting [Abstract]

Segment Information

Segment Information - MGE Energy and MGE.

MGE Energy operates in the following business segments: electric utility, gas utility, nonregulated energy, transmission investment, and all other. See MGE Energy's and MGE's 2015 Annual Report on Form 10-K for additional discussion of each of these segments.

The following tables show segment information for MGE Energy's operations for the indicated periods:

(In thousands)MGE Energy		Electric		Gas		Non- Regulated Energy		Transmission Investment		All Others		Consolidation/ Elimination Entries		Consolidated Total
Three Months Ended September 30, 2016
Operating revenues	$	118,933	$	17,570	$	214	$	-	$	-	$	-	$	136,717
Interdepartmental revenues		459		6,040		10,998		-		-		(17,497)		-
Total operating revenues		119,392		23,610		11,212		-		-		(17,497)		136,717
Depreciation and amortization		(7,332)		(2,047)		(1,833)		-		-		-		(11,212)
Other operating expenses		(77,010)		(19,292)		(33)		(13)		(127)		17,497		(78,978)
Operating income (loss)		35,050		2,271		9,346		(13)		(127)		-		46,527
Other income (deductions), net		178		13		-		2,023		(109)		-		2,105
Interest (expense) income, net		(2,855)		(818)		(1,436)		-		71		-		(5,038)
Income (loss) before taxes		32,373		1,466		7,910		2,010		(165)		-		43,594
Income tax (provision) benefit		(11,290)		(494)		(3,175)		(812)		57		-		(15,714)
Net income (loss)	$	21,083	$	972	$	4,735	$	1,198	$	(108)	$	-	$	27,880
Three Months Ended September 30, 2015
Operating revenues	$	121,453	$	17,431	$	1,911	$	-	$	-	$	-	$	140,795
Interdepartmental revenues		163		3,855		9,866		-		-		(13,884)		-
Total operating revenues		121,616		21,286		11,777		-		-		(13,884)		140,795
Depreciation and amortization		(7,584)		(1,714)		(1,872)		-		(12)		-		(11,182)
Other operating expenses		(80,202)		(16,906)		(36)		(15)		(161)		13,884		(83,436)
Operating income (loss)		33,830		2,666		9,869		(15)		(173)		-		46,177
Other income (deductions), net		141		(7)		-		2,397		33		-		2,564
Interest (expense) income, net		(2,798)		(804)		(1,491)		-		57		-		(5,036)
Income (loss) before taxes		31,173		1,855		8,378		2,382		(83)		-		43,705
Income tax (provision) benefit		(10,321)		(732)		(3,362)		(962)		26		-		(15,351)
Net income (loss)	$	20,852	$	1,123	$	5,016	$	1,420	$	(57)	$	-	$	28,354
Nine Months Ended September 30, 2016
Operating revenues	$	312,470	$	92,368	$	982	$	-	$	-	$	-	$	405,820
Interdepartmental revenues		1,482		17,278		32,894		-		-		(51,654)		-
Total operating revenues		313,952		109,646		33,876		-		-		(51,654)		405,820
Depreciation and amortization		(21,754)		(6,043)		(5,537)		-		(24)		-		(33,358)
Other operating expenses		(230,680)		(88,328)		(115)		(17)		(706)		51,654		(268,192)
Operating income (loss)		61,518		15,275		28,224		(17)		(730)		-		104,270
Other income (deductions), net		492		(13)		-		6,023		224		-		6,726
Interest (expense) income, net		(8,421)		(2,425)		(4,348)		-		199		-		(14,995)
Income (loss) before taxes		53,589		12,837		23,876		6,006		(307)		-		96,001
Income tax (provision) benefit		(17,984)		(5,048)		(9,583)		(2,418)		90		-		(34,943)
Net income (loss)	$	35,605	$	7,789	$	14,293	$	3,588	$	(217)	$	-	$	61,058
Nine Months Ended September 30, 2015
Operating revenues	$	319,174	$	108,028	$	5,853	$	-	$	-	$	-	$	433,055
Interdepartmental revenues		400		8,871		29,566		-		-		(38,837)		-
Total operating revenues		319,574		116,899		35,419		-		-		(38,837)		433,055
Depreciation and amortization		(22,372)		(5,018)		(5,601)		-		(35)		-		(33,026)
Other operating expenses		(239,963)		(96,063)		(122)		(15)		(626)		38,837		(297,952)
Operating income (loss)		57,239		15,818		29,696		(15)		(661)		-		102,077
Other income (deductions), net		247		(33)		-		6,568		333		-		7,115
Interest (expense) income, net		(8,385)		(2,398)		(4,516)		-		164		-		(15,135)
Income (loss) before taxes		49,101		13,387		25,180		6,553		(164)		-		94,057
Income tax (provision) benefit		(15,868)		(5,370)		(10,106)		(2,637)		35		-		(33,946)
Net income (loss)	$	33,233	$	8,017	$	15,074	$	3,916	$	(129)	$	-	$	60,111

The following tables show segment information for MGE's operations for the indicated periods:

(In thousands)MGE		Electric		Gas		Non- Regulated Energy		Transmission Investment(b)		Consolidation/ Elimination Entries		Consolidated Total
Three Months Ended September 30, 2016
Operating revenues	$	118,938	$	17,576	$	214	$	-	$	-	$	136,728
Interdepartmental revenues		454		6,034		10,998		-		(17,486)		-
Total operating revenues		119,392		23,610		11,212		-		(17,486)		136,728
Depreciation and amortization		(7,332)		(2,047)		(1,833)		-		-		(11,212)
Other operating expenses(a)		(88,282)		(19,781)		(3,208)		4		17,486		(93,781)
Operating income(a)		23,778		1,782		6,171		4		-		31,735
Other income, net(a)		160		8		-		868		-		1,036
Interest expense, net		(2,855)		(818)		(1,436)		-		-		(5,109)
Net income		21,083		972		4,735		872		-		27,662
Less: Net income attributable to
noncontrolling interest, net of tax		-		-		-		-		(5,695)		(5,695)
Net income attributable to MGE	$	21,083	$	972	$	4,735	$	872	$	(5,695)	$	21,967
Three Months Ended September 30, 2015
Operating revenues	$	121,460	$	17,435	$	1,911	$	-	$	-	$	140,806
Interdepartmental revenues		156		3,851		9,866		-		(13,873)		-
Total operating revenues		121,616		21,286		11,777		-		(13,873)		140,806
Depreciation and amortization		(7,584)		(1,714)		(1,872)		-		-		(11,170)
Other operating expenses(a)		(90,511)		(17,635)		(3,398)		(15)		13,873		(97,686)
Operating income (loss)(a)		23,521		1,937		6,507		(15)		-		31,950
Other (deductions) income, net(a)		129		(10)		-		1,435		-		1,554
Interest expense, net		(2,798)		(804)		(1,491)		-		-		(5,093)
Net income		20,852		1,123		5,016		1,420		-		28,411
Less: Net income attributable to
noncontrolling interest, net of tax		-		-		-		-		(6,633)		(6,633)
Net income attributable to MGE	$	20,852	$	1,123	$	5,016	$	1,420	$	(6,633)	$	21,778
Nine Months Ended September 30, 2016
Operating revenues	$	312,488	$	92,390	$	982	$	-	$	-	$	405,860
Interdepartmental revenues		1,464		17,256		32,894		-		(51,614)		-
Total operating revenues		313,952		109,646		33,876		-		(51,614)		405,860
Depreciation and amortization		(21,754)		(6,043)		(5,537)		-		-		(33,334)
Other operating expenses(a)		(248,566)		(93,348)		(9,698)		-		51,614		(299,998)
Operating income(a)		43,632		10,255		18,641		-		-		72,528
Other income (deductions), net(a)		394		(41)		-		3,262		-		3,615
Interest expense, net		(8,421)		(2,425)		(4,348)		-		-		(15,194)
Net income		35,605		7,789		14,293		3,262		-		60,949
Less: Net income attributable to
noncontrolling interest, net of tax		-		-		-		-		(17,899)		(17,899)
Net income attributable to MGE	$	35,605	$	7,789	$	14,293	$	3,262	$	(17,899)	$	43,050
Nine Months Ended September 30, 2015
Operating revenues	$	319,191	$	108,039	$	5,853	$	-	$	-	$	433,083
Interdepartmental revenues		383		8,860		29,566		-		(38,809)		-
Total operating revenues		319,574		116,899		35,419		-		(38,809)		433,083
Depreciation and amortization		(22,372)		(5,018)		(5,601)		-		-		(32,991)
Other operating expenses(a)		(255,732)		(101,405)		(10,228)		(15)		38,809		(328,571)
Operating income (loss)(a)		41,470		10,476		19,590		(15)		-		71,521
Other income (deductions), net(a)		148		(61)		-		3,931		-		4,018
Interest expense, net		(8,385)		(2,398)		(4,516)		-		-		(15,299)
Net income		33,233		8,017		15,074		3,916		-		60,240
Less: Net income attributable to
noncontrolling interest, net of tax		-		-		-		-		(19,812)		(19,812)
Net income attributable to MGE	$	33,233	$	8,017	$	15,074	$	3,916	$	(19,812)	$	40,428
(a) Amounts are shown net of the related tax expense, consistent with the presentation on the MGE Consolidated Statement of Income.
(b) As of July 31, 2016, MGE no longer consolidates MGE Energy's proportionate share of equity earnings in MGE Transco. See Footnote 3 for further discussion.

XML

Significant Accounting Policies (Policies)

9 Months Ended

Sep. 30, 2016

Accounting Policies [Abstract]

Variable Interest Entities

MGE Power Elm Road and MGE Power West Campus own electric generating assets and lease those assets to MGE. Both entities are variable interest entities under applicable authoritative accounting guidance. MGE is considered the primary beneficiary of these entities as a result of contractual agreements. As a result, MGE has consolidated MGE Power Elm Road and MGE Power West Campus.

Common Stock

MGE Energy sells shares of its common stock through its Stock Plan. Those shares may be newly issued shares or shares that MGE Energy has purchased in the open market for resale to participants in the Stock Plan. All sales under the Stock Plan are covered by a shelf registration statement that MGE Energy filed with the SEC.

Investments - ATC

MGE Transco has accounted for its investment in ATC under the equity method of accounting.

Share-based Compensation

Under MGE Energy'sPerformance Unit Plan and the Director Incentive Plan, eligible employees and non-employee directors may receive performance units that entitle the holder to receive a cash payment equal to the value of a designated number of shares of MGE Energy's common stock, plus dividend equivalent payments thereon, at the end of the set performance period.

In January 2016, 3,773units were granted under the Director Incentive Plan and are subject to a three-year graded vesting schedule. In February 2016, 19,055 units were granted under the Performance Unit Plan and are subject to a five-year graded vesting schedule. On the grant date, MGE Energy and MGE measure the cost of the employee services received in exchange for a performance unit award based on the current market value of MGE Energy common stock. The fair value of the awards is re-measured quarterly, including atSeptember 30,2016, as required by applicable accounting standards. Changes in fair value as well as the original grant are recognized as compensation cost. Since this amount is re-measured throughout the vesting period, the compensation cost is subject to variability.

For nonretirement eligible employees under the Performance Unit Plan, stock based compensation costs are accrued and recognized using the graded vesting method. Compensation cost for retirement eligible employees or employees that will become retirement eligible during the vesting schedule are recognized on an abridged horizon.

Derivative Hedging

As part of its regular operations, MGE enters into contracts, including options, swaps, futures, forwards, and other contractual commitments, to manage its exposure to commodity prices. To the extent that these contracts are derivatives, MGE assesses whether or not the normal purchases or normal sales exclusion applies. For contracts to which this exclusion cannot be applied, MGE Energy and MGE recognize such derivatives in the consolidated balance sheets at fair value. MGE's financial commodity derivative activities are conducted in accordance with its electric and gas risk management program, which is approved by the PSCW and limits the volume MGE can hedge with specific risk management strategies. The maximum length of time over which cash flows related to energy commodities can be hedged is four years. If the derivative qualifies for regulatory deferral, the derivatives are marked to fair value and are offset with a corresponding regulatory asset or liability. The deferred gain or loss is recognized in earnings in the delivery month applicable to the instrument. Gains and losses related to hedges qualifying for regulatory treatment are recoverable in gas rates through the PGA or in electric rates as a component of the fuel rules mechanism.

Derivative Netting

All derivative instruments in this table are presented on a gross basis and are calculated prior to the netting of instruments with the same counterparty under a master netting agreement as well as the netting of collateral. For financial statement purposes, MGE Energy and MGE have netted instruments with the same counterparty under a master netting agreement as well as the netting of collateral.

Wisconsin Fuel Rules

Fuel rules require the PSCW and Wisconsin utilities to defer electric fuel-related costs that fall outside a symmetrical cost tolerance band around the amount approved for a utility in its annual fuel proceedings. Any over/under recovery of the actual costs is determined on an annual basis and is adjusted in future billings to electric retail customers. The fuel rules bandwidth is currently set at plus or minus 2%. Under fuel rules, MGE would defer costs, less any excess revenues, if its actual electric fuel costs exceeded 102% of the electric fuel costs allowed in its latest rate order. Excess revenues are defined as revenues in the year in question that provide MGE with a greater return on common equity than authorized by the PSCW in MGE's latest rate order. Conversely, MGE is required to defer the benefit of lower costs if actual electric fuel costs were less than 98% of the electric fuel costs allowed in that order.

Recurring Fair Value Measurements

Fair value is defined as the price that would be received to sell an asset or would be paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants at the measurement date. The accounting standard clarifies that fair value should be based on the assumptions market participants would use when pricing the asset or liability including assumptions about risk. The standard also establishes a three level fair value hierarchy based upon the observability of the assumptions used and requires the use of observable market data when available. The levels are:

Level 1 - Pricing inputs are quoted prices within active markets for identical assets or liabilities.

Level 2 - Pricing inputs are quoted prices within active markets for similar assets or liabilities; quoted prices for identical or similar instruments in markets that are not active; and model-derived valuations that are correlated with or otherwise verifiable by observable market data.

Level 3 - Pricing inputs are unobservable and reflect management's best estimate of what market participants would use in pricing the asset or liability.

At September 30,2016, and December 31, 2015, the carrying amount of cash, cash equivalents, and outstanding commercial paper approximates fair market value due to the short maturity of those investments and obligations. The estimated fair market value of MGE Energy's and MGE's long-term debt is based on quoted market prices for similar financial instruments at September 30,2016, and December 31, 2015. Since long-term debt is not traded in an active market, it is classified as Level 2.

Investments include exchange-traded investment securities valued using quoted prices on active exchanges and are therefore classified as Level 1.

Derivatives include exchange-traded derivative contracts, over-the-counter transactions, a purchased power agreement, and FTRs. Most exchange-traded derivative contracts are valued based on unadjusted quoted prices in active markets and are therefore classified as Level 1. A small number of exchange-traded derivative contracts are valued using quoted market pricing in markets with insufficient volumes and are therefore considered unobservable and classified as Level 3. Transactions done with an over-the-counter party are on inactive markets and are therefore classified as Level 3. These transactions are valued based on quoted prices from markets with similar exchange traded transactions. FTRs are priced based upon monthly auction results for identical or similar instruments in a closed market with limited data available and are therefore classified as Level 3.

The purchased power agreement (see Footnote 8) was valued using an internally-developed pricing model and therefore is classified as Level 3. The model projects future market energy prices and compares those prices to the projected power costs to be incurred under the contract. Inputs to the model require significant management judgment and estimation. Future energy prices are based on a forward power pricing curve using exchange-traded contracts in the electric futures market, where such exchange-traded contracts exist, and upon calculations based on forward gas prices, where such exchange-traded contracts do not exist. A basis adjustment is applied to the market energy price to reflect the price differential between the market price delivery point and the counterparty delivery point. The historical relationship between the delivery points is reviewed and a discount (below 100%) or premium (above 100%) is derived. This comparison is done for both peak times when demand is high and off peak times when demand is low. If the basis adjustment is lowered, the fair value measurement will decrease, and if the basis adjustment is increased, the fair value measurement will increase.

The projected power costs anticipated to be incurred under the purchased power agreement are determined using many factors, including historical generating costs, future prices, and expected fuel mix of the counterparty. An increase in the projected fuel costs would result in a decrease in the fair value measurement of the purchased power agreement. A significant input that MGE estimates is the counterparty's fuel mix in determining the projected power cost. MGE also considers the assumptions that market participants would use in valuing the asset or liability. This consideration includes assumptions about market risk such as liquidity, volatility, and contract duration. The fair value model uses a discount rate that incorporates discounting, credit, and model risks.

The following table presents the significant unobservable inputs used in the pricing model.

	Model Input
Significant Unobservable Inputs	September 30, 2016	December 31, 2015
Basis adjustment:
On peak	93.3%	96.9%
Off peak	94.1%	95.1%
Counterparty fuel mix:
Internal generation	55% - 75%	60% - 75%
Purchased power	45% - 25%	40% - 25%

The deferred compensation plan allows participants to defer certain cash compensation into a notional investment account. These amounts are included within other deferred liabilities in the consolidated balance sheets of MGE Energy and MGE. The notional investments earn interest based upon the semiannual rate of U.S. Treasury Bills having a 26 week maturity increased by 1% compounded monthly with a minimum annual rate of 7%, compounded monthly. The notional investments are based upon observable market data, however, since the deferred compensation obligations themselves are not exchanged in an active market, they are classified as Level 2.

New Accounting Pronouncements Disclosure

New Accounting Pronouncements - MGE Energy and MGE.

a.Revenue from Contracts with Customers.

In May 2014, the FASB issued authoritative guidance within the Codification's Revenue Recognition topic that provides guidance on the recognition, measurement, and disclosure of revenue from contracts with customers. This authoritative guidance will become effective January 1, 2018. MGE Energy and MGE are currently assessing the impact this pronouncement will have on their financial statements.

b.Consolidation.

In February 2015, the FASB issued authoritative guidance within the Codification's Consolidation topic that provides guidance on the evaluation of certain legal entities for consolidation purposes. This authoritative guidance became effective January 1, 2016. This guidance had no impact on our financial statements.

c.Debt Issuance Costs.

In April 2015, the FASB issued authoritative guidance within the Codification's Interest topic that provides guidance on the presentation of debt issuance costs in financial statements. This authoritative guidance became effective January 1, 2016, and changed the presentation of debt issuance costs on the balance sheet. Prior to the authoritative guidance, debt issuance costs were treated as a deferred asset, and beginning January 1, 2016, these costs are included as a direct deduction to the related debt liability on the consolidated balance sheet. As of September 30, 2016, assets (other deferred assets and other) and liabilities (long-term debt) decreased approximately $4.0 million as a cumulative result of the guidance. In addition, this guidance was applied retrospectively to all prior periods presented, resulting in a decrease to assets and liabilities of $4.3 million for the year ended December 31, 2015.

d.Financial Instruments.

In January 2016, the FASB issued authoritative guidance within the Codification's Financial Instruments topic that provides guidance on the recognition and measurement of financial instruments. This authoritative guidance will become effective January 1, 2018, and will require equity investments to be measured at fair value with changes in fair value recognized in net income rather than in other comprehensive income. The impact of this guidance on our financial statements is not expected to be material.

e.Leases.

In February 2016, the FASB issued authoritative guidance within the Leases topic that provides guidance on the classification, recognition, measurement, and disclosure of leases. This authoritative guidance willbecome effective January 1, 2019. MGE Energy and MGE are currently assessing the impact this pronouncement will have on their financial statements.

XML

Investment in ATC (Tables)

9 Months Ended

Sep. 30, 2016

Equity Method Investments and Joint Ventures [Abstract]

Equity Method Investments Financial Data

For the three and nine months endedSeptember 30,2016 and 2015, MGE Transco recorded the following:

		Three Months Ended				Nine Months Ended
		September 30,				September 30,
(In thousands)		2016		2015		2016		2015
Equity earnings from investment in ATC	$	2,023	$	2,398	$	6,023	$	6,568
Dividends received from ATC		1,486		1,841		4,214		4,732
Capital contributions to ATC		888		177		1,598		533

For the three and nine months endedSeptember 30,2016 and 2015, MGE recorded the following amounts attributable to noncontrolling interest in MGE Transco:

		Three Months Ended				Nine Months Ended
		September 30,				September 30,
(In thousands)		2016		2015		2016		2015
Equity earnings from investment(a)	$	254	$	679	$	1,410	$	1,848
Dividends received from investment(a)		561		423		1,113		1,007
Capital contributions by noncontrolling interest		888		177		1,598		533

(a)Amounts reflected net of tax.

ATC's summarized financial data for the three and nine months endedSeptember 30,2016 and 2015, is as follows:

		Three Months Ended				Nine Months Ended
		September 30,				September 30,
(In thousands)		2016		2015		2016		2015
Operating revenues	$	158,126	$	164,515	$	476,591	$	482,043
Operating expenses		(80,271)		(78,059)		(241,034)		(238,336)
Other income, net		1,128		585		2,563		566
Interest expense, net		(24,624)		(23,655)		(73,714)		(72,310)
Earnings before members' income taxes	$	54,359	$	63,386	$	164,406	$	171,963

XML

Pension and Other Postretirement Plans (Tables)

9 Months Ended

Sep. 30, 2016

Compensation and Retirement Disclosure [Abstract]

Schedule of Net Periodic Benefit Costs

The following table presents the components of MGE Energy's and MGE's net periodic benefit costs recognized for the three and nine months endedSeptember 30,2016 and 2015. A portion of the net periodic benefit cost is capitalized within the consolidated balance sheets.

		Three Months Ended				Nine Months Ended
		September 30,				September 30,
(In thousands)		2016		2015		2016		2015
Pension Benefits
Components of net periodic cost:
Service cost	$	1,413	$	1,878	$	4,358	$	5,715
Interest cost		3,161		3,594		9,744		10,936
Expected return on assets		(5,724)		(5,930)		(17,646)		(18,045)
Amortization of:
Prior service cost		3		6		8		18
Actuarial loss		1,388		1,393		4,278		4,240
Net periodic cost	$	241	$	941	$	742	$	2,864
Postretirement Benefits
Components of net periodic (benefit) cost:
Service cost	$	361	$	194	$	1,084	$	580
Interest cost		753		392		2,258		1,176
Expected return on assets		(787)		(355)		(2,360)		(1,063)
Amortization of:
Transition obligation		1		-		3		1
Prior service benefit		(744)		(337)		(2,233)		(1,009)
Actuarial loss		178		133		533		397
Net periodic (benefit) cost	$	(238)	$	27	$	(715)	$	82

XML

Commitments and Contingencies (Tables)

9 Months Ended

Sep. 30, 2016

Commitments and Contingencies Disclosure [Abstract]

Purchase Contracts, Fiscal Year Maturity Schedule

As of September 30,2016, the future commitments related to these purchase contracts were as follows:

(In thousands)		2016		2017		2018		2019		2020		Thereafter
Coal(a)	$	23,260	$	16,535	$	12,640	$	3,850	$	-	$	-
Natural gas
Transportation & storage(b)		6,005		20,858		20,644		19,482		15,225		31,767
Supply(c)		11,661		12,580		-		-		-		-
	$	40,926	$	49,973	$	33,284	$	23,332	$	15,225	$	31,767

(a)Total coal commitments for the Columbia and Elm Road Units, including transportation. Fuel procurement for MGE's jointly owned Columbia and Elm Road Units is handled by WPL and WEPCO, respectively, who are the operators of those facilities. If any minimum purchase obligations must be paid under these contracts, management believes these obligations would be considered costs of service and recoverable in rates.

(b)MGE's natural gas transportation and storage contracts require fixed monthly payments for firm supply pipeline transportation and storage capacity. The pricing components of the fixed monthly payments for the transportation and storage contracts are established by FERC but may be subject to change.Management expects to recover these costs in futurecustomer rates.

(c)These commitments include market-based pricing. Management expects to recover these costs in futurecustomer rates.

XML

Derivative and Hedging Instruments (Tables)

9 Months Ended

Sep. 30, 2016

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Gross Notional Volume of Open Derivatives

The gross notional volume of open derivatives is as follows:

	September 30, 2016	December 31, 2015
Commodity derivative contracts	465,835 MWh	355,580 MWh
Commodity derivative contracts	6,157,500 Dth	5,037,500 Dth
FTRs	3,567 MW	2,000 MW

Fair Value of Derivative Instruments on the Balance Sheet

The following table summarizes the fair value of the derivative instruments on the consolidated balance sheets. All derivative instruments in this table are presented on a gross basis and are calculated prior to the netting of instruments with the same counterparty under a master netting agreement as well as the netting of collateral. For financial statement purposes, MGE Energy and MGE have netted instruments with the same counterparty under a master netting agreement as well as the netting of collateral. As of September 30,2016 and December 31, 2015, MGE Energy and MGE had a receivable – margin account balance of $1.6million and $2.3 million, respectively, which is shown net of any collateral posted against derivative positions.

	Asset Derivatives			Liability Derivatives
(In thousands)	Balance Sheet Location		Fair Value	Balance Sheet Location		Fair Value
September 30, 2016
Commodity derivative contracts	Other current assets	$	1,023	Derivative liability (current)	$	351
Commodity derivative contracts	Other deferred charges		114	Derivative liability (long-term)		97
FTRs	Other current assets		230	Derivative liability (current)		-
PPA	N/A		N/A	Derivative liability (current)		8,030
PPA	N/A		N/A	Derivative liability (long-term)		42,460
December 31, 2015
Commodity derivative contracts	Other current assets	$	146	Derivative liability (current)	$	1,266
Commodity derivative contracts	Other deferred charges		144	Derivative liability (long-term)		70
FTRs	Other current assets		234	Derivative liability (current)		-
PPA	N/A		N/A	Derivative liability (current)		8,340
PPA	N/A		N/A	Derivative liability (long-term)		44,930

Offsetting Assets

The following tables show the effect of netting arrangements for recognized derivative assets and liabilities that are subject to a master netting arrangement or similar arrangement on the consolidated balance sheets.

Offsetting of Derivative Assets
(In thousands)		Gross Amounts		Gross Amounts Offset in Balance Sheets		Collateral Posted Against Derivative Positions		Net Amount Presented in Balance Sheets
September 30, 2016
Commodity derivative contracts	$	1,137	$	(448)	$	-	$	689
FTRs		230		-		-		230
December 31, 2015
Commodity derivative contracts	$	290	$	(290)	$	-	$	-
FTRs		234		-		-		234

Offsetting Liabilities

Offsetting of Derivative Liabilities
(In thousands)		Gross Amounts		Gross Amounts Offset in Balance Sheets		Collateral Posted Against Derivative Positions		Net Amount Presented in Balance Sheets
September 30, 2016
Commodity derivative contracts	$	448	$	(448)	$	-	$	-
PPA		50,490		-		-		50,490
December 31, 2015
Commodity derivative contracts	$	1,336	$	(290)	$	(1,038)	$	8
PPA		53,270		-		-		53,270

Derivative Gains and Losses in Balance Sheet

The following tables summarize the unrealized and realized gains (losses) related to the derivative instruments on the consolidated balance sheets at September 30,2016 and 2015, and the consolidated income statements for the three and nine months endedSeptember 30,2016 and 2015.

		2016				2015
(In thousands)		Current and Long-Term Regulatory Asset		Other Current Assets		Current and Long-Term Regulatory Asset		Other Current Assets
Three Months Ended September 30:
Balance at July 1,	$	50,521	$	659	$	56,048	$	455
Unrealized (gain) loss		(663)		-		4,036		-
Realized gain (loss) reclassified to a deferred account		17		(17)		(408)		408
Realized (loss) gain reclassified to income statement		(304)		46		(2,278)		(91)
Balance at September 30,	$	49,571	$	688	$	57,398	$	772
Nine Months Ended September 30:
Balance at January 1,	$	54,082	$	1,208	$	54,998	$	1,001
Unrealized loss		1,128		-		8,514		-
Realized (loss) gain reclassified to a deferred account		(1,417)		1,417		(1,700)		1,700
Realized (loss) gain reclassified to income statement		(4,222)		(1,937)		(4,414)		(1,929)
Balance at September 30,	$	49,571	$	688	$	57,398	$	772

Derivative Gains and Losses in Income Statement

		Realized Losses (Gains)
		2016				2015
(In thousands)		Fuel for Electric Generation/ Purchased Power		Cost of Gas Sold		Fuel for Electric Generation/ Purchased Power		Cost of Gas Sold
Three Months Ended September 30:
Commodity derivative contracts	$	45	$	-	$	862	$	(17)
FTRs		(703)		-		(233)		-
PPA		916		-		1,757		-
Nine Months Ended September 30:
Commodity derivative contracts	$	1,469	$	1,814	$	1,860	$	1,742
FTRs		(635)		-		(607)		-
PPA		3,511		-		3,348		-

XML

Fair Value of Financial Instruments (Tables)

9 Months Ended

Sep. 30, 2016

Fair Value Disclosures [Abstract]

Estimated Fair Market Value of Financial Instruments

The estimated fair market values of financial instruments are as follows:

		September 30, 2016				December 31, 2015
(In thousands)		Carrying Amount		Fair Value		Carrying Amount		Fair Value
MGE Energy
Assets:
Cash and cash equivalents	$	111,585	$	111,585	$	81,384	$	81,384
Liabilities:
Long-term debt(a)		392,316		463,849		395,508		435,767
MGE
Assets:
Cash and cash equivalents	$	31,558	$	31,558	$	26,760	$	26,760
Liabilities:
Long-term debt(a)		392,316		463,849		395,508		435,767
(a) Includes long-term debt due within one year. Excludes debt issuance costs and unamortized discount of
$4.2 million and $4.5 million at September 30, 2016, and December 31, 2015, respectively.

Assets and Liabilities Measured at Fair Value on a Recurring Basis

The following table presents the balances of assets and liabilities measured at fair value on a recurring basis.

		Fair Value as of September 30, 2016
(In thousands)		Total		Level 1		Level 2		Level 3
MGE Energy
Assets:
Derivatives	$	1,367	$	917	$	-	$	450
Exchange-traded investments		520		520		-		-
Total Assets	$	1,887	$	1,437	$	-	$	450
Liabilities:
Derivatives	$	50,938	$	59	$	-	$	50,879
Deferred compensation		2,963		-		2,963		-
Total Liabilities	$	53,901	$	59	$	2,963	$	50,879
MGE
Assets:
Derivatives	$	1,367	$	917	$	-	$	450
Exchange-traded investments		97		97		-		-
Total Assets	$	1,464	$	1,014	$	-	$	450
Liabilities:
Derivatives	$	50,938	$	59	$	-	$	50,879
Deferred compensation		2,963		-		2,963		-
Total Liabilities	$	53,901	$	59	$	2,963	$	50,879

		Fair Value as of December 31, 2015
(In thousands)		Total		Level 1		Level 2		Level 3
MGE Energy
Assets:
Derivatives	$	234	$	-	$	-	$	234
Exchange-traded investments		759		759		-		-
Total Assets	$	993	$	759	$	-	$	234
Liabilities:
Derivatives(b)	$	54,316	$	581	$	-	$	53,735
Deferred compensation		3,145		-		3,145		-
Total Liabilities	$	57,461	$	581	$	3,145	$	53,735
MGE
Assets:
Derivatives	$	234	$	-	$	-	$	234
Exchange-traded investments		148		148		-		-
Total Assets	$	382	$	148	$	-	$	234
Liabilities:
Derivatives(b)	$	54,316	$	581	$	-	$	53,735
Deferred compensation		3,145		-		3,145		-
Total Liabilities	$	57,461	$	581	$	3,145	$	53,735
(b) These amounts are shown gross and exclude $1.0 million of collateral that was posted
against derivative positions with counterparties as of December 31, 2015.

Significant Unobservable Inputs

The following table presents the significant unobservable inputs used in the pricing model.

	Model Input
Significant Unobservable Inputs	September 30, 2016	December 31, 2015
Basis adjustment:
On peak	93.3%	96.9%
Off peak	94.1%	95.1%
Counterparty fuel mix:
Internal generation	55% - 75%	60% - 75%
Purchased power	45% - 25%	40% - 25%

Changes in Level 3 Assets and Liabilities Measured at Fair Value on a Recurring Basis

The following table summarizes the changes in Level 3 commodity derivative assets and liabilities measured at fair value on a recurring basis.

		Three Months Ended				Nine Months Ended
		September 30,				September 30,
(In thousands)		2016		2015		2016		2015
Beginning balance	$	(51,883)	$	(56,194)	$	(53,501)	$	(53,986)
Realized and unrealized gains (losses):
Included in regulatory liabilities (assets)		1,455		(888)		3,073		(3,096)
Included in other comprehensive income		-		-		-		-
Included in earnings		(278)		(2,285)		(4,250)		(4,497)
Included in current assets		-		-		-		-
Purchases		5,814		6,364		16,751		17,497
Sales		-		-		-		-
Issuances		-		-		-		-
Settlements		(5,537)		(4,079)		(12,502)		(13,000)
Transfers in and/or out of Level 3		-		-		-		-
Balance as of September 30,	$	(50,429)	$	(57,082)	$	(50,429)	$	(57,082)
Total gains (losses) included in earnings attributed to
the change in unrealized gains (losses) related to
assets and liabilities held at September 30,(c)	$	-	$	-	$	-	$	-

(c)MGE's exchange-traded derivative contracts, over-the-counter party transactions, purchased power agreement, and FTRs are subject to regulatory deferral. These derivatives are therefore marked to fair value and are offset in the financial statements with a corresponding regulatory asset or liability.

Gains and Losses Included in Income for Level 3 Assets and Liabilities Measured at Fair Value on a Recurring Basis

The following table presents total realized and unrealized gains (losses) included in income for Level 3 assets and liabilities measured at fair value on a recurring basis (c).

		Three Months Ended				Nine Months Ended
		September 30,				September 30,
(In thousands)		2016		2015		2016		2015
Purchased Power Expense	$	(278)	$	(2,302)	$	(4,250)	$	(4,515)
Cost of Gas Sold Expense		-		17		-		18
Total	$	(278)	$	(2,285)	$	(4,250)	$	(4,497)

(c)MGE's exchange-traded derivative contracts, over-the-counter party transactions, purchased power agreement, and FTRs are subject to regulatory deferral. These derivatives are therefore marked to fair value and are offset in the financial statements with a corresponding regulatory asset or liability.

XML

Segment Information (Tables)

9 Months Ended

Sep. 30, 2016

Segment Reporting [Abstract]

Segment Information

The following tables show segment information for MGE Energy's operations for the indicated periods:

(In thousands)MGE Energy		Electric		Gas		Non- Regulated Energy		Transmission Investment		All Others		Consolidation/ Elimination Entries		Consolidated Total
Three Months Ended September 30, 2016
Operating revenues	$	118,933	$	17,570	$	214	$	-	$	-	$	-	$	136,717
Interdepartmental revenues		459		6,040		10,998		-		-		(17,497)		-
Total operating revenues		119,392		23,610		11,212		-		-		(17,497)		136,717
Depreciation and amortization		(7,332)		(2,047)		(1,833)		-		-		-		(11,212)
Other operating expenses		(77,010)		(19,292)		(33)		(13)		(127)		17,497		(78,978)
Operating income (loss)		35,050		2,271		9,346		(13)		(127)		-		46,527
Other income (deductions), net		178		13		-		2,023		(109)		-		2,105
Interest (expense) income, net		(2,855)		(818)		(1,436)		-		71		-		(5,038)
Income (loss) before taxes		32,373		1,466		7,910		2,010		(165)		-		43,594
Income tax (provision) benefit		(11,290)		(494)		(3,175)		(812)		57		-		(15,714)
Net income (loss)	$	21,083	$	972	$	4,735	$	1,198	$	(108)	$	-	$	27,880
Three Months Ended September 30, 2015
Operating revenues	$	121,453	$	17,431	$	1,911	$	-	$	-	$	-	$	140,795
Interdepartmental revenues		163		3,855		9,866		-		-		(13,884)		-
Total operating revenues		121,616		21,286		11,777		-		-		(13,884)		140,795
Depreciation and amortization		(7,584)		(1,714)		(1,872)		-		(12)		-		(11,182)
Other operating expenses		(80,202)		(16,906)		(36)		(15)		(161)		13,884		(83,436)
Operating income (loss)		33,830		2,666		9,869		(15)		(173)		-		46,177
Other income (deductions), net		141		(7)		-		2,397		33		-		2,564
Interest (expense) income, net		(2,798)		(804)		(1,491)		-		57		-		(5,036)
Income (loss) before taxes		31,173		1,855		8,378		2,382		(83)		-		43,705
Income tax (provision) benefit		(10,321)		(732)		(3,362)		(962)		26		-		(15,351)
Net income (loss)	$	20,852	$	1,123	$	5,016	$	1,420	$	(57)	$	-	$	28,354
Nine Months Ended September 30, 2016
Operating revenues	$	312,470	$	92,368	$	982	$	-	$	-	$	-	$	405,820
Interdepartmental revenues		1,482		17,278		32,894		-		-		(51,654)		-
Total operating revenues		313,952		109,646		33,876		-		-		(51,654)		405,820
Depreciation and amortization		(21,754)		(6,043)		(5,537)		-		(24)		-		(33,358)
Other operating expenses		(230,680)		(88,328)		(115)		(17)		(706)		51,654		(268,192)
Operating income (loss)		61,518		15,275		28,224		(17)		(730)		-		104,270
Other income (deductions), net		492		(13)		-		6,023		224		-		6,726
Interest (expense) income, net		(8,421)		(2,425)		(4,348)		-		199		-		(14,995)
Income (loss) before taxes		53,589		12,837		23,876		6,006		(307)		-		96,001
Income tax (provision) benefit		(17,984)		(5,048)		(9,583)		(2,418)		90		-		(34,943)
Net income (loss)	$	35,605	$	7,789	$	14,293	$	3,588	$	(217)	$	-	$	61,058
Nine Months Ended September 30, 2015
Operating revenues	$	319,174	$	108,028	$	5,853	$	-	$	-	$	-	$	433,055
Interdepartmental revenues		400		8,871		29,566		-		-		(38,837)		-
Total operating revenues		319,574		116,899		35,419		-		-		(38,837)		433,055
Depreciation and amortization		(22,372)		(5,018)		(5,601)		-		(35)		-		(33,026)
Other operating expenses		(239,963)		(96,063)		(122)		(15)		(626)		38,837		(297,952)
Operating income (loss)		57,239		15,818		29,696		(15)		(661)		-		102,077
Other income (deductions), net		247		(33)		-		6,568		333		-		7,115
Interest (expense) income, net		(8,385)		(2,398)		(4,516)		-		164		-		(15,135)
Income (loss) before taxes		49,101		13,387		25,180		6,553		(164)		-		94,057
Income tax (provision) benefit		(15,868)		(5,370)		(10,106)		(2,637)		35		-		(33,946)
Net income (loss)	$	33,233	$	8,017	$	15,074	$	3,916	$	(129)	$	-	$	60,111

The following tables show segment information for MGE's operations for the indicated periods:

(In thousands)MGE		Electric		Gas		Non- Regulated Energy		Transmission Investment(b)		Consolidation/ Elimination Entries		Consolidated Total
Three Months Ended September 30, 2016
Operating revenues	$	118,938	$	17,576	$	214	$	-	$	-	$	136,728
Interdepartmental revenues		454		6,034		10,998		-		(17,486)		-
Total operating revenues		119,392		23,610		11,212		-		(17,486)		136,728
Depreciation and amortization		(7,332)		(2,047)		(1,833)		-		-		(11,212)
Other operating expenses(a)		(88,282)		(19,781)		(3,208)		4		17,486		(93,781)
Operating income(a)		23,778		1,782		6,171		4		-		31,735
Other income, net(a)		160		8		-		868		-		1,036
Interest expense, net		(2,855)		(818)		(1,436)		-		-		(5,109)
Net income		21,083		972		4,735		872		-		27,662
Less: Net income attributable to
noncontrolling interest, net of tax		-		-		-		-		(5,695)		(5,695)
Net income attributable to MGE	$	21,083	$	972	$	4,735	$	872	$	(5,695)	$	21,967
Three Months Ended September 30, 2015
Operating revenues	$	121,460	$	17,435	$	1,911	$	-	$	-	$	140,806
Interdepartmental revenues		156		3,851		9,866		-		(13,873)		-
Total operating revenues		121,616		21,286		11,777		-		(13,873)		140,806
Depreciation and amortization		(7,584)		(1,714)		(1,872)		-		-		(11,170)
Other operating expenses(a)		(90,511)		(17,635)		(3,398)		(15)		13,873		(97,686)
Operating income (loss)(a)		23,521		1,937		6,507		(15)		-		31,950
Other (deductions) income, net(a)		129		(10)		-		1,435		-		1,554
Interest expense, net		(2,798)		(804)		(1,491)		-		-		(5,093)
Net income		20,852		1,123		5,016		1,420		-		28,411
Less: Net income attributable to
noncontrolling interest, net of tax		-		-		-		-		(6,633)		(6,633)
Net income attributable to MGE	$	20,852	$	1,123	$	5,016	$	1,420	$	(6,633)	$	21,778
Nine Months Ended September 30, 2016
Operating revenues	$	312,488	$	92,390	$	982	$	-	$	-	$	405,860
Interdepartmental revenues		1,464		17,256		32,894		-		(51,614)		-
Total operating revenues		313,952		109,646		33,876		-		(51,614)		405,860
Depreciation and amortization		(21,754)		(6,043)		(5,537)		-		-		(33,334)
Other operating expenses(a)		(248,566)		(93,348)		(9,698)		-		51,614		(299,998)
Operating income(a)		43,632		10,255		18,641		-		-		72,528
Other income (deductions), net(a)		394		(41)		-		3,262		-		3,615
Interest expense, net		(8,421)		(2,425)		(4,348)		-		-		(15,194)
Net income		35,605		7,789		14,293		3,262		-		60,949
Less: Net income attributable to
noncontrolling interest, net of tax		-		-		-		-		(17,899)		(17,899)
Net income attributable to MGE	$	35,605	$	7,789	$	14,293	$	3,262	$	(17,899)	$	43,050
Nine Months Ended September 30, 2015
Operating revenues	$	319,191	$	108,039	$	5,853	$	-	$	-	$	433,083
Interdepartmental revenues		383		8,860		29,566		-		(38,809)		-
Total operating revenues		319,574		116,899		35,419		-		(38,809)		433,083
Depreciation and amortization		(22,372)		(5,018)		(5,601)		-		-		(32,991)
Other operating expenses(a)		(255,732)		(101,405)		(10,228)		(15)		38,809		(328,571)
Operating income (loss)(a)		41,470		10,476		19,590		(15)		-		71,521
Other income (deductions), net(a)		148		(61)		-		3,931		-		4,018
Interest expense, net		(8,385)		(2,398)		(4,516)		-		-		(15,299)
Net income		33,233		8,017		15,074		3,916		-		60,240
Less: Net income attributable to
noncontrolling interest, net of tax		-		-		-		-		(19,812)		(19,812)
Net income attributable to MGE	$	33,233	$	8,017	$	15,074	$	3,916	$	(19,812)	$	40,428
(a) Amounts are shown net of the related tax expense, consistent with the presentation on the MGE Consolidated Statement of Income.
(b) As of July 31, 2016, MGE no longer consolidates MGE Energy's proportionate share of equity earnings in MGE Transco. See Footnote 3 for further discussion.

XML

Equity and Financing Arrangements (Details) - USD ($)	1 Months Ended	9 Months Ended
	Oct. 31, 2016	Sep. 30, 2016	Sep. 30, 2015
Common Stock [Abstract]
Common stock issued during period		0	0
Dilutive Shares Calculation [Abstract]
Dilutive securities		$ 0
Medium-Term Notes, 5.26% due 2017
Debt Instrument [Line Items]
Long-term debt, gross		$ 30,000,000
Future Debt Issuance, 3.76% due 2052 | Subsequent Event [Member]
Debt Instrument [Line Items]
Face amount	$ 40,000,000
Interest rate	3.76%
Term	35 years

XML

Investment in ATC (Details-1) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Schedule Of Equity Method Investments [Line Items]
Equity earnings from investment	$ 2,023	$ 2,398	$ 6,023	$ 6,568
Dividends received from investment	1,486	1,841	4,214	4,732
Capital contributions to investments	888	177	2,036	785
MGE Transco [Member] | ATC [Member]
Schedule Of Equity Method Investments [Line Items]
Equity earnings from investment	2,023	2,398	6,023	6,568
Dividends received from investment	1,486	1,841	4,214	4,732
Capital contributions to investments	888	177	1,598	533
Equity method investment	72,900		72,900		$ 69,500
MGE [Member]
Schedule Of Equity Method Investments [Line Items]
Equity earnings from investment	1,451	2,398	5,451	6,568
Dividends received from investment	1,486	1,841	4,214	4,732
Capital contributions to investments	888	$ 177	1,598	$ 533
MGE [Member] | MGE Transco [Member]
Schedule Of Equity Method Investments [Line Items]
Equity method investment	$ 46,800		$ 46,800

XML

Investment in ATC (Details-2) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Minority Interest [Line Items]
Equity earnings from investment		$ 2,023	$ 2,398	$ 6,023	$ 6,568
Dividends received from investment		1,486	1,841	4,214	4,732
Capital contributions to investments		$ 888	177	$ 2,036	785
MGE Energy [Member]
Minority Interest [Line Items]
MGE Energy's ownership interest in MGE Transco		50.50%		50.50%
MGE [Member]
Minority Interest [Line Items]
Equity earnings from investment		$ 1,451	2,398	$ 5,451	6,568
Dividends received from investment		1,486	1,841	4,214	4,732
Capital contributions to investments		$ 888	177	$ 1,598	533
MGE's ownership interest in MGE Transco		49.50%		49.50%
Noncontrolling interest on balance sheet		$ 116,206		$ 116,206		$ 140,308
MGE [Member] | Noncontrolling Interest [Member] | MGE Transco [Member]
Minority Interest [Line Items]
Equity earnings from investment	[1]	254	679	1,410	1,848
Dividends received from investment	[1]	561	423	1,113	1,007
Capital contributions to investments		$ 888	$ 177	$ 1,598	$ 533
Noncontrolling interest on balance sheet						$ 23,600

[1] Amounts reflected net of tax.

XML

Investment in ATC (Details-3) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
ATC [Member]
Schedule Of Equity Method Investments [Line Items]
Operating revenues	$ 158,126	$ 164,515	$ 476,591	$ 482,043
Operating expenses	(80,271)	(78,059)	(241,034)	(238,336)
Other income, net	1,128	585	2,563	566
Interest expense, net	(24,624)	(23,655)	(73,714)	(72,310)
Earnings before members' income taxes	54,359	63,386	164,406	171,963
ATC [Member]
Related Party Transaction [Line Items]
Related party expenses	7,400	$ 7,000	22,100	$ 21,100
Due from related parties	$ 300		$ 300		$ 200

XML

Taxes (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Income Tax Disclosure [Line Items]
Effective income tax rate	36.10%	35.10%	36.40%	36.10%
MGE [Member]
Income Tax Disclosure [Line Items]
Effective income tax rate	36.00%	35.10%	36.40%	36.10%

XML

Pension and Other Postretirement Plans (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Pension Benefits [Member]
Components of net periodic cost (benefit):
Service cost	$ 1,413	$ 1,878	$ 4,358	$ 5,715
Interest cost	3,161	3,594	9,744	10,936
Expected return on assets	(5,724)	(5,930)	(17,646)	(18,045)
Amortization of:
Prior service cost (benefit)	3	6	8	18
Actuarial loss	1,388	1,393	4,278	4,240
Net periodic cost (benefit)	241	941	742	2,864
Postretirement Benefits [Member]
Components of net periodic cost (benefit):
Service cost	361	194	1,084	580
Interest cost	753	392	2,258	1,176
Expected return on assets	(787)	(355)	(2,360)	(1,063)
Amortization of:
Transition obligation	1	0	3	1
Prior service cost (benefit)	(744)	(337)	(2,233)	(1,009)
Actuarial loss	178	133	533	397
Net periodic cost (benefit)	$ (238)	$ 27	$ (715)	$ 82

XML

Share Based Compensation (Details) - Performance Units [Member] - USD ($) $ in Millions		1 Months Ended	3 Months Ended		9 Months Ended
	Feb. 19, 2016	Jan. 31, 2016	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense			$ 0.2	$ 0.3	$ 2.0	$ 0.4
Cash payments distributed related to awards previously granted and now payable		$ 1.2
Awards forfeited during period, value					$ 0.0	$ 0.2
Awards forfeited during period, units					0	4,676
Outstanding awards vested during period					$ 5.8
Performance Unit Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards granted during period (in units)	19,055
Award vesting period					5 years
Director Incentive Agreement [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards granted during period (in units)		3,773
Award vesting period					3 years

XML

Commitments and Contingencies (Details-1) - EPA [Member]	9 Months Ended
	Sep. 30, 2016 ppb pollutant state MW
Effluent Limitations Guidelines and Standards for Steam Electric Power Generating Source Category [Abstract]
Air pollution control and ash handling systems capacity at coal burning power plants, minimum (in MW) | MW	50
EPA's National Ambient Air Quality Standards
Number of pollutants monitored by the National Ambient Air Quality Standards | pollutant	6
Ozone NAAQS
Current primary regulated level of Ozone NAAQS (in parts per billion)	70
Current secondary regulated level of Ozone NAAQS (in parts per billion)	70
EPA's Cross State Air Pollution Rule
Number of states incorporating 2008 ozone NAAQS attainment levels | state	22

XML

Commitments and Contingencies (Details-2) $ in Thousands	Sep. 30, 2016 USD ($)
Operating expense purchase contracts [Abstract]
Purchase obligation, 2016	$ 40,926
Purchase obligation, 2017	49,973
Purchase obligation, 2018	33,284
Purchase obligation, 2019	23,332
Purchase obligation, 2020	15,225
Purchase obligation, Thereafter	31,767
Coal [Member]
Operating expense purchase contracts [Abstract]
Purchase obligation, 2016	23,260	[1]
Purchase obligation, 2017	16,535	[1]
Purchase obligation, 2018	12,640	[1]
Purchase obligation, 2019	3,850	[1]
Purchase obligation, 2020	0	[1]
Purchase obligation, Thereafter	0	[1]
Natural Gas, Transportation and Storage [Member]
Operating expense purchase contracts [Abstract]
Purchase obligation, 2016	6,005	[2]
Purchase obligation, 2017	20,858	[2]
Purchase obligation, 2018	20,644	[2]
Purchase obligation, 2019	19,482	[2]
Purchase obligation, 2020	15,225	[2]
Purchase obligation, Thereafter	31,767	[2]
Natual Gas, Supply [Member]
Operating expense purchase contracts [Abstract]
Purchase obligation, 2016	11,661	[3]
Purchase obligation, 2017	12,580	[3]
Purchase obligation, 2018	0	[3]
Purchase obligation, 2019	0	[3]
Purchase obligation, 2020	0	[3]
Purchase obligation, Thereafter	$ 0	[3]

[1] Total coal commitments for the Columbia and Elm Road Units, including transportation. Fuel procurement for MGE's jointly owned Columbia and Elm Road Units is handled by WPL and WEPCO, respectively, who are the operators of those facilities. If any minimum purchase obligations must be paid under these contracts, management believes these obligations would be considered costs of service and recoverable in rates.

[2] MGE's natural gas transportation and storage contracts require fixed monthly payments for firm supply pipeline transportation and storage capacity. The pricing components of the fixed monthly payments for the transportation and storage contracts are established by FERC but may be subject to change. Management expects to recover these costs in future customer rates .

[3] These commitments include market-based pricing. Management expects to recover these costs in future customer rates .

XML

Derivative and Hedging Instruments (Details-1) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2016 USD ($) Dth MWh MW	Dec. 31, 2015 USD ($) Dth MWh MW	Jun. 30, 2016 USD ($)	Sep. 30, 2015 USD ($)	Jun. 30, 2015 USD ($)	Dec. 31, 2014 USD ($)
Gross Notional Volume of Open Derivatives
Derivative, right to reclaim collateral (receivable)	$ 0
Receivable, margin account balance, net of collateral posted against derivative positions	1,600	$ 2,300
Other Current Assets [Member]
Derivative fair values [Abstract]
Derivative fair value, net	688	1,208	$ 659	$ 772	$ 455	$ 1,001
Commodity Contracts And Financial Transimission Rights [Member]
Derivative fair values [Abstract]
Derivative fair value, net	$ 900	$ (800)
Commodity Derivative Contracts [Member]
Gross Notional Volume of Open Derivatives
Notional amount, energy measure (in MWh) | MWh	465,835	355,580
Notional amount, decatherm measure (in Dth) | Dth	6,157,500	5,037,500
Derivative fair values [Abstract]
Asset Derivatives, fair value, gross basis	$ 1,137	$ 290
Liability Derivatives, fair value, gross basis	448	1,336
Commodity Derivative Contracts [Member] | Other Current Assets [Member]
Derivative fair values [Abstract]
Asset Derivatives, fair value, gross basis	1,023	146
Commodity Derivative Contracts [Member] | Other Deferred Charges [Member]
Derivative fair values [Abstract]
Asset Derivatives, fair value, gross basis	114	144
Commodity Derivative Contracts [Member] | Derivative Liability (Current) [Member]
Derivative fair values [Abstract]
Liability Derivatives, fair value, gross basis	351	1,266
Commodity Derivative Contracts [Member] | Derivative Liability (Long-term) [Member]
Derivative fair values [Abstract]
Liability Derivatives, fair value, gross basis	$ 97	$ 70
Energy Related Commodity Contract [Member] | Cash Flow Hedging [Member]
Derivatives Fair Value [Line Items]
Maximum term of derivative hedging contract	4 years
Financial Transmission Rights [Member]
Gross Notional Volume of Open Derivatives
Notional amount, power measure (in MW) | MW	3,567	2,000
Derivative fair values [Abstract]
Asset Derivatives, fair value, gross basis	$ 230	$ 234
Financial Transmission Rights [Member] | Other Current Assets [Member]
Derivative fair values [Abstract]
Asset Derivatives, fair value, gross basis	230	234
Financial Transmission Rights [Member] | Derivative Liability (Current) [Member]
Derivative fair values [Abstract]
Liability Derivatives, fair value, gross basis	0	0
PPA [Member]
Derivative fair values [Abstract]
Derivative fair value, net	(50,500)	(53,300)
Liability Derivatives, fair value, gross basis	50,490	53,270
PPA [Member] | Derivative Liability (Current) [Member]
Derivative fair values [Abstract]
Liability Derivatives, fair value, gross basis	8,030	8,340
PPA [Member] | Derivative Liability (Long-term) [Member]
Derivative fair values [Abstract]
Liability Derivatives, fair value, gross basis	$ 42,460	$ 44,930

XML

Derivative and Hedging Instruments (Details-2) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Commodity Derivative Contracts [Member]
Offsetting Assets [Line Items]
Gross amounts	$ 1,137	$ 290
Gross amounts offset in balance sheet	(448)	(290)
Collateral posted against derivative positions	0	0
Net amount presented in balance sheet	689	0
Financial Transmission Rights [Member]
Offsetting Assets [Line Items]
Gross amounts	230	234
Gross amounts offset in balance sheet	0	0
Collateral posted against derivative positions	0	0
Net amount presented in balance sheet	$ 230	$ 234

XML

Derivative and Hedging Instruments (Details-3) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Offsetting Liabilities [Line Items]
Collateral posted against derivative positions		$ (1,000)
Commodity Derivative Contracts [Member]
Offsetting Liabilities [Line Items]
Gross amounts	$ 448	1,336
Gross amounts offset in balance sheet	(448)	(290)
Collateral posted against derivative positions	0	(1,038)
Net amount presented in balance sheet	0	8
Purchased Power Agreement [Member]
Offsetting Liabilities [Line Items]
Gross amounts	50,490	53,270
Gross amounts offset in balance sheet	0	0
Collateral posted against derivative positions	0	0
Net amount presented in balance sheet	$ 50,490	$ 53,270

XML

Derivative and Hedging Instruments (Details-4) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Current and Long-Term Regulatory Asset [Member]
Change In Derivative Fair Value [Roll Forward]
Beginning balance,	$ 50,521	$ 56,048	$ 54,082	$ 54,998
Unrealized (gain) loss	(663)	4,036	1,128	8,514
Realized gain (loss) reclassified to a deferred account	17	(408)	(1,417)	(1,700)
Realized (loss) gain reclassified to income statement	(304)	(2,278)	(4,222)	(4,414)
Ending balance,	49,571	57,398	49,571	57,398
Other Current Assets [Member]
Change In Derivative Fair Value [Roll Forward]
Beginning balance,	659	455	1,208	1,001
Unrealized (gain) loss	0	0	0	0
Realized gain (loss) reclassified to a deferred account	(17)	408	1,417	1,700
Realized (loss) gain reclassified to income statement	46	(91)	(1,937)	(1,929)
Ending balance,	$ 688	$ 772	$ 688	$ 772

XML

Derivative and Hedging Instruments (Details-5) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016 USD ($) counterparty	Sep. 30, 2015 USD ($)	Sep. 30, 2016 USD ($) counterparty	Sep. 30, 2015 USD ($)	Dec. 31, 2015 USD ($)
Counterparties in net liability position or default [Abstract]
Derivative, net liability position of counterparties (less than $0.1 million)	$ 0		$ 0		$ 100
Number of counterparties in default | counterparty	0		0
Commodity Derivative Contracts [Member] | Fuel For Electric Generation Purchased Power [Member]
Realized losses (gains) on income statement [Line Items]
Realized losses (gains) on income statement	$ 45	$ 862	$ 1,469	$ 1,860
Commodity Derivative Contracts [Member] | Cost Of Gas Sold Expense [Member]
Realized losses (gains) on income statement [Line Items]
Realized losses (gains) on income statement	0	(17)	1,814	1,742
Financial Transmission Rights [Member] | Fuel For Electric Generation Purchased Power [Member]
Realized losses (gains) on income statement [Line Items]
Realized losses (gains) on income statement	(703)	(233)	(635)	(607)
Financial Transmission Rights [Member] | Cost Of Gas Sold Expense [Member]
Realized losses (gains) on income statement [Line Items]
Realized losses (gains) on income statement	0	0	0	0
Purchased Power Agreement [Member]
Derivative collateral required to be posted for PPA [Abstract]
Minimum collateral that may be required to be posted	20,000		20,000
Maximum collateral that may be required to be posted	40,000		40,000
Collateral posted	0		0
Purchased Power Agreement [Member] | Fuel For Electric Generation Purchased Power [Member]
Realized losses (gains) on income statement [Line Items]
Realized losses (gains) on income statement	916	1,757	3,511	3,348
Purchased Power Agreement [Member] | Cost Of Gas Sold Expense [Member]
Realized losses (gains) on income statement [Line Items]
Realized losses (gains) on income statement	$ 0	$ 0	$ 0	$ 0

XML

Rate Matters (Details) - PSCW [Member] - MGE [Member] - USD ($)	1 Months Ended	4 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2016	Dec. 31, 2015	Sep. 30, 2016	Dec. 31, 2017	Dec. 31, 2015	Jul. 31, 2016	Jan. 31, 2016	Aug. 31, 2015
Rate Proceedings [Abstract]
Authorized return on equity, percentage					10.20%
Fuel Rules [Abstract]
Fuel rules, bandwidth			2.00%
Fuel rules, electric fuel deferred costs upper threshold			102.00%
Fuel rules, electric fuel deferred costs lower threshold			98.00%
Electric Fuel Monitored Costs, 2016 [Member]
Fuel Rules [Abstract]
Change in fuel rules monitored costs							$ (14,800,000)
Deferred fuel rules monitored costs	$ 4,100,000		$ 4,100,000
Fuel Rules Credit ($0.00256/kWh), 2015/2016 [Member]
Fuel Rules [Abstract]
Electric fuel credit (per kWh)		$ 0.00256	0.00256
Electric fuel credit ($)								$ 10,900,000
Return of electric fuel credit, total		$ 2,600,000	$ 6,300,000
Fuel Rules Refund, 2015/2016 [Member]
Fuel Rules [Abstract]
Electric fuel credit ($)						$ 15,700,000
Return of electric fuel credit, total	$ 15,500,000
Electric Rate Proceeding [Member]
Rate Proceedings [Abstract]
Authorized rate increase (decrease), percentage			0.00%		3.80%
Authorized rate increase (decrease), amount			$ 0		$ 15,400,000
Electric Rate Proceeding [Member] | Proposed Future Rate Matters [Member]
Rate Proceedings [Abstract]
Proposed rate increase (decrease), percentage				1.70%
Gas Rate Proceeding [Member]
Rate Proceedings [Abstract]
Authorized rate increase (decrease), percentage			0.00%		(2.00%)
Authorized rate increase (decrease), amount			$ 0		$ (3,800,000)
Gas Rate Proceeding [Member] | Proposed Future Rate Matters [Member]
Rate Proceedings [Abstract]
Proposed rate increase (decrease), percentage				3.70%

XML

Fair Value of Financial Instruments (Details-1) - USD ($) $ in Thousands		Sep. 30, 2016	Dec. 31, 2015
Carrying Amount [Member]
Assets:
Cash and cash equivalents		$ 111,585	$ 81,384
Liabilities:
Long-term debt	[1]	392,316	395,508
Unamortized discount and debt issuance costs, net		4,200	4,500
Fair Value [Member]
Assets:
Cash and cash equivalents		111,585	81,384
Liabilities:
Long-term debt	[1]	463,849	435,767
Unamortized discount and debt issuance costs, net		4,200	4,500
MGE [Member] | Carrying Amount [Member]
Assets:
Cash and cash equivalents		31,558	26,760
Liabilities:
Long-term debt	[1]	392,316	395,508
Unamortized discount and debt issuance costs, net		4,200	4,500
MGE [Member] | Fair Value [Member]
Assets:
Cash and cash equivalents		31,558	26,760
Liabilities:
Long-term debt	[1]	463,849	435,767
Unamortized discount and debt issuance costs, net		$ 4,200	$ 4,500

[1] Includes long-term debt due within one year. Excludes debt issuance costs and unamortized discount of $4.2 million and $4.5 million at September 30, 2016, and December 31, 2015, respectively.

XML

Fair Value of Financial Instruments (Details-2) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Liabilities:
Derivative liability, collateral offset		$ 1,000
Recurring [Member]
Assets:
Derivative assets, net	$ 1,367	234
Total Assets	1,887	993
Liabilities:
Derivative liabilities, net	50,938	54,316	[1]
Deferred compensation	2,963	3,145
Total liabilities	53,901	57,461
Recurring [Member] | Exchange Traded [Member]
Assets:
Available-for-sale securities	520	759
Recurring [Member] | Level 1 [Member]
Assets:
Derivative assets, net	917	0
Total Assets	1,437	759
Liabilities:
Derivative liabilities, net	59	581	[1]
Deferred compensation	0	0
Total liabilities	59	581
Recurring [Member] | Level 1 [Member] | Exchange Traded [Member]
Assets:
Available-for-sale securities	520	759
Recurring [Member] | Level 2 [Member]
Assets:
Derivative assets, net	0	0
Total Assets	0	0
Liabilities:
Derivative liabilities, net	0	0	[1]
Deferred compensation	2,963	3,145
Total liabilities	2,963	3,145
Recurring [Member] | Level 2 [Member] | Exchange Traded [Member]
Assets:
Available-for-sale securities	0	0
Recurring [Member] | Level 3 [Member]
Assets:
Derivative assets, net	450	234
Total Assets	450	234
Liabilities:
Derivative liabilities, net	50,879	53,735	[1]
Deferred compensation	0	0
Total liabilities	50,879	53,735
Recurring [Member] | Level 3 [Member] | Exchange Traded [Member]
Assets:
Available-for-sale securities	0	0
MGE [Member]
Liabilities:
Derivative liability, collateral offset		1,000
MGE [Member] | Recurring [Member]
Assets:
Derivative assets, net	1,367	234
Total Assets	1,464	382
Liabilities:
Derivative liabilities, net	50,938	54,316	[1]
Deferred compensation	2,963	3,145
Total liabilities	53,901	57,461
MGE [Member] | Recurring [Member] | Exchange Traded [Member]
Assets:
Available-for-sale securities	97	148
MGE [Member] | Recurring [Member] | Level 1 [Member]
Assets:
Derivative assets, net	917	0
Total Assets	1,014	148
Liabilities:
Derivative liabilities, net	59	581	[1]
Deferred compensation	0	0
Total liabilities	59	581
MGE [Member] | Recurring [Member] | Level 1 [Member] | Exchange Traded [Member]
Assets:
Available-for-sale securities	97	148
MGE [Member] | Recurring [Member] | Level 2 [Member]
Assets:
Derivative assets, net	0	0
Total Assets	0	0
Liabilities:
Derivative liabilities, net	0	0	[1]
Deferred compensation	2,963	3,145
Total liabilities	2,963	3,145
MGE [Member] | Recurring [Member] | Level 2 [Member] | Exchange Traded [Member]
Assets:
Available-for-sale securities	0	0
MGE [Member] | Recurring [Member] | Level 3 [Member]
Assets:
Derivative assets, net	450	234
Total Assets	450	234
Liabilities:
Derivative liabilities, net	50,879	53,735	[1]
Deferred compensation	0	0
Total liabilities	50,879	53,735
MGE [Member] | Recurring [Member] | Level 3 [Member] | Exchange Traded [Member]
Assets:
Available-for-sale securities	$ 0	$ 0

[1] These amounts are shown gross and exclude $1.0 million of collateral that was posted against derivative positions with counterparties as of December 31, 2015.

XML

Fair Value of Financial Instruments (Details-3)	9 Months Ended	12 Months Ended
	Sep. 30, 2016	Dec. 31, 2015
Basis adjustment:
Basis adjustment - on peak	93.30%	96.90%
Basis adjustment - off peak	94.10%	95.10%
US Treasury Bill Securities [Member]
Deferred compensation plan [Abstract]
Investment interest calculation, investment maturity period (26 weeks)	182 days
Investment interest calculation, monthly compounding rate	1.00%
Investment interest calculation, minimum annual rate compounded monthly	7.00%
Minimum [Member]
Counterparty fuel mix:
Internal generation	55.00%	60.00%
Purchased power	45.00%	40.00%
Maximum [Member]
Counterparty fuel mix:
Internal generation	75.00%	75.00%
Purchased power	25.00%	25.00%

XML

Fair Value of Financial Instruments (Details-4) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Beginning balance,		$ (51,883)	$ (56,194)	$ (53,501)	$ (53,986)
Realized and unrealized gains (losses):
Included in regulatory (assets) liabilities		1,455	(888)	3,073	(3,096)
Included in other comprehensive income		0	0	0	0
Included in earnings	[1]	(278)	(2,285)	(4,250)	(4,497)
Included in current assets		0	0	0	0
Purchases		5,814	6,364	16,751	17,497
Sales		0	0	0	0
Issuances		0	0	0	0
Settlements		(5,537)	(4,079)	(12,502)	(13,000)
Transfers in and/or out of level 3		0	0	0	0
Ending balance,		(50,429)	(57,082)	(50,429)	(57,082)
Total gains (losses) included in earnings attributed to the change in unrealized gains (losses) related to assets and liabilities	[1]	0	0	0	0
Purchased Power Expense [Member]
Realized and unrealized gains (losses):
Included in earnings	[1]	(278)	(2,302)	(4,250)	(4,515)
Cost Of Gas Sold Expense [Member]
Realized and unrealized gains (losses):
Included in earnings	[1]	$ 0	$ 17	$ 0	$ 18

[1] MGE's exchange-traded derivative contracts, over-the-counter party transactions, purchased power agreement, and FTRs are subject to regulatory deferral. These derivatives are therefore marked to fair value and are offset in the financial statements with a corresponding regulatory asset or liability.

XML

New Accounting Pronouncements (Details-1) - Accounting Standards Update 2015-03 - Simplifying the Presentation of Debt Issuance Costs [Member] - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015
Other deferred charges [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New accounting pronouncement, effect of adoption, decrease in assets and liabilities (debt issuance costs)	$ 4.0	$ 4.3
Long-term debt [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New accounting pronouncement, effect of adoption, decrease in assets and liabilities (debt issuance costs)	$ 4.0	$ 4.3

XML

Segment Information (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Segment Reporting Information [Line Items]
Operating revenues		$ 136,717	$ 140,795	$ 405,820	$ 433,055
Depreciation and amortization		(11,212)	(11,182)	(33,358)	(33,026)
Other operating expenses		(78,978)	(83,436)	(268,192)	(297,952)
Operating income (loss)		46,527	46,177	104,270	102,077
Other income (deductions), net		2,105	2,564	6,726	7,115
Interest (expense) income, net		(5,038)	(5,036)	(14,995)	(15,135)
Income before income taxes		43,594	43,705	96,001	94,057
Income tax (provision) benefit		(15,714)	(15,351)	(34,943)	(33,946)
Net Income (Loss)		27,880	28,354	61,058	60,111
Electric [Member]
Segment Reporting Information [Line Items]
Operating revenues		118,933	121,453	312,470	319,174
Gas [Member]
Segment Reporting Information [Line Items]
Operating revenues		17,570	17,431	92,368	108,028
Non Regulated Energy [Member]
Segment Reporting Information [Line Items]
Operating revenues		214	1,911	982	5,853
Transmission Investment [Member]
Segment Reporting Information [Line Items]
Operating revenues		0	0	0	0
All Others [Member]
Segment Reporting Information [Line Items]
Operating revenues		0	0	0	0
Operating Segments [Member]
Segment Reporting Information [Line Items]
Operating revenues		136,717	140,795	405,820	433,055
Operating Segments [Member] | Electric [Member]
Segment Reporting Information [Line Items]
Operating revenues		119,392	121,616	313,952	319,574
Depreciation and amortization		(7,332)	(7,584)	(21,754)	(22,372)
Other operating expenses		(77,010)	(80,202)	(230,680)	(239,963)
Operating income (loss)		35,050	33,830	61,518	57,239
Other income (deductions), net		178	141	492	247
Interest (expense) income, net		(2,855)	(2,798)	(8,421)	(8,385)
Income before income taxes		32,373	31,173	53,589	49,101
Income tax (provision) benefit		(11,290)	(10,321)	(17,984)	(15,868)
Net Income (Loss)		21,083	20,852	35,605	33,233
Operating Segments [Member] | Gas [Member]
Segment Reporting Information [Line Items]
Operating revenues		23,610	21,286	109,646	116,899
Depreciation and amortization		(2,047)	(1,714)	(6,043)	(5,018)
Other operating expenses		(19,292)	(16,906)	(88,328)	(96,063)
Operating income (loss)		2,271	2,666	15,275	15,818
Other income (deductions), net		13	(7)	(13)	(33)
Interest (expense) income, net		(818)	(804)	(2,425)	(2,398)
Income before income taxes		1,466	1,855	12,837	13,387
Income tax (provision) benefit		(494)	(732)	(5,048)	(5,370)
Net Income (Loss)		972	1,123	7,789	8,017
Operating Segments [Member] | Non Regulated Energy [Member]
Segment Reporting Information [Line Items]
Operating revenues		11,212	11,777	33,876	35,419
Depreciation and amortization		(1,833)	(1,872)	(5,537)	(5,601)
Other operating expenses		(33)	(36)	(115)	(122)
Operating income (loss)		9,346	9,869	28,224	29,696
Other income (deductions), net		0	0	0	0
Interest (expense) income, net		(1,436)	(1,491)	(4,348)	(4,516)
Income before income taxes		7,910	8,378	23,876	25,180
Income tax (provision) benefit		(3,175)	(3,362)	(9,583)	(10,106)
Net Income (Loss)		4,735	5,016	14,293	15,074
Operating Segments [Member] | Transmission Investment [Member]
Segment Reporting Information [Line Items]
Operating revenues		0	0	0	0
Depreciation and amortization		0	0	0	0
Other operating expenses		(13)	(15)	(17)	(15)
Operating income (loss)		(13)	(15)	(17)	(15)
Other income (deductions), net		2,023	2,397	6,023	6,568
Interest (expense) income, net		0	0	0	0
Income before income taxes		2,010	2,382	6,006	6,553
Income tax (provision) benefit		(812)	(962)	(2,418)	(2,637)
Net Income (Loss)		1,198	1,420	3,588	3,916
Operating Segments [Member] | All Others [Member]
Segment Reporting Information [Line Items]
Operating revenues		0	0	0	0
Depreciation and amortization		0	(12)	(24)	(35)
Other operating expenses		(127)	(161)	(706)	(626)
Operating income (loss)		(127)	(173)	(730)	(661)
Other income (deductions), net		(109)	33	224	333
Interest (expense) income, net		71	57	199	164
Income before income taxes		(165)	(83)	(307)	(164)
Income tax (provision) benefit		57	26	90	35
Net Income (Loss)		(108)	(57)	(217)	(129)
Consolidation Elimination Entries [Member]
Segment Reporting Information [Line Items]
Operating revenues		(17,497)	(13,884)	(51,654)	(38,837)
Depreciation and amortization		0	0	0	0
Other operating expenses		17,497	13,884	51,654	38,837
Operating income (loss)		0	0	0	0
Other income (deductions), net		0	0	0	0
Interest (expense) income, net		0	0	0	0
Income before income taxes		0	0	0	0
Income tax (provision) benefit		0	0	0	0
Net Income (Loss)		0	0	0	0
Consolidation Elimination Entries [Member] | Electric [Member]
Segment Reporting Information [Line Items]
Operating revenues		459	163	1,482	400
Consolidation Elimination Entries [Member] | Gas [Member]
Segment Reporting Information [Line Items]
Operating revenues		6,040	3,855	17,278	8,871
Consolidation Elimination Entries [Member] | Non Regulated Energy [Member]
Segment Reporting Information [Line Items]
Operating revenues		10,998	9,866	32,894	29,566
Consolidation Elimination Entries [Member] | Transmission Investment [Member]
Segment Reporting Information [Line Items]
Operating revenues		0	0	0	0
Consolidation Elimination Entries [Member] | All Others [Member]
Segment Reporting Information [Line Items]
Operating revenues		0	0	0	0
MGE [Member]
Segment Reporting Information [Line Items]
Operating revenues		136,728	140,806	405,860	433,083
Depreciation and amortization		(11,212)	(11,170)	(33,334)	(32,991)
Other operating expenses	[1]	(93,781)	(97,686)	(299,998)	(328,571)
Operating income (loss)	[1]	31,735	31,950	72,528	71,521
Other income (deductions), net	[1]	1,036	1,554	3,615	4,018
Interest (expense) income, net		(5,109)	(5,093)	(15,194)	(15,299)
Income tax (provision) benefit		(14,934)	(14,401)	(32,488)	(31,218)
Net Income Including Noncontrolling Interest		27,662	28,411	60,949	60,240
Less Net Income Attributable to Noncontrolling Interest, net of tax		(5,695)	(6,633)	(17,899)	(19,812)
Net Income (Loss)		21,967	21,778	43,050	40,428
MGE [Member] | Electric [Member]
Segment Reporting Information [Line Items]
Operating revenues		118,938	121,460	312,488	319,191
MGE [Member] | Gas [Member]
Segment Reporting Information [Line Items]
Operating revenues		17,576	17,435	92,390	108,039
MGE [Member] | Non Regulated Energy [Member]
Segment Reporting Information [Line Items]
Operating revenues		214	1,911	982	5,853
MGE [Member] | Transmission Investment [Member]
Segment Reporting Information [Line Items]
Operating revenues	[2]	0	0	0	0
MGE [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Operating revenues		136,728	140,806	405,860	433,083
MGE [Member] | Operating Segments [Member] | Electric [Member]
Segment Reporting Information [Line Items]
Operating revenues		119,392	121,616	313,952	319,574
Depreciation and amortization		(7,332)	(7,584)	(21,754)	(22,372)
Other operating expenses	[1]	(88,282)	(90,511)	(248,566)	(255,732)
Operating income (loss)	[1]	23,778	23,521	43,632	41,470
Other income (deductions), net	[1]	160	129	394	148
Interest (expense) income, net		(2,855)	(2,798)	(8,421)	(8,385)
Net Income Including Noncontrolling Interest		21,083	20,852	35,605	33,233
Less Net Income Attributable to Noncontrolling Interest, net of tax		0	0	0	0
Net Income (Loss)		21,083	20,852	35,605	33,233
MGE [Member] | Operating Segments [Member] | Gas [Member]
Segment Reporting Information [Line Items]
Operating revenues		23,610	21,286	109,646	116,899
Depreciation and amortization		(2,047)	(1,714)	(6,043)	(5,018)
Other operating expenses	[1]	(19,781)	(17,635)	(93,348)	(101,405)
Operating income (loss)	[1]	1,782	1,937	10,255	10,476
Other income (deductions), net	[1]	8	(10)	(41)	(61)
Interest (expense) income, net		(818)	(804)	(2,425)	(2,398)
Net Income Including Noncontrolling Interest		972	1,123	7,789	8,017
Less Net Income Attributable to Noncontrolling Interest, net of tax		0	0	0	0
Net Income (Loss)		972	1,123	7,789	8,017
MGE [Member] | Operating Segments [Member] | Non Regulated Energy [Member]
Segment Reporting Information [Line Items]
Operating revenues		11,212	11,777	33,876	35,419
Depreciation and amortization		(1,833)	(1,872)	(5,537)	(5,601)
Other operating expenses	[1]	(3,208)	(3,398)	(9,698)	(10,228)
Operating income (loss)	[1]	6,171	6,507	18,641	19,590
Other income (deductions), net	[1]	0	0	0	0
Interest (expense) income, net		(1,436)	(1,491)	(4,348)	(4,516)
Net Income Including Noncontrolling Interest		4,735	5,016	14,293	15,074
Less Net Income Attributable to Noncontrolling Interest, net of tax		0	0	0	0
Net Income (Loss)		4,735	5,016	14,293	15,074
MGE [Member] | Operating Segments [Member] | Transmission Investment [Member]
Segment Reporting Information [Line Items]
Operating revenues	[2]	0	0	0	0
Depreciation and amortization	[2]	0	0	0	0
Other operating expenses	[1],[2]	4	(15)	0	(15)
Operating income (loss)	[1],[2]	4	(15)	0	(15)
Other income (deductions), net	[1],[2]	868	1,435	3,262	3,931
Interest (expense) income, net	[2]	0	0	0	0
Net Income Including Noncontrolling Interest	[2]	872	1,420	3,262	3,916
Less Net Income Attributable to Noncontrolling Interest, net of tax	[2]	0	0	0	0
Net Income (Loss)	[2]	872	1,420	3,262	3,916
MGE [Member] | Consolidation Elimination Entries [Member]
Segment Reporting Information [Line Items]
Operating revenues		(17,486)	(13,873)	(51,614)	(38,809)
Depreciation and amortization		0	0	0	0
Other operating expenses	[1]	17,486	13,873	51,614	38,809
Operating income (loss)	[1]	0	0	0	0
Other income (deductions), net	[1]	0	0	0	0
Interest (expense) income, net		0	0	0	0
Net Income Including Noncontrolling Interest		0	0	0	0
Less Net Income Attributable to Noncontrolling Interest, net of tax		(5,695)	(6,633)	(17,899)	(19,812)
Net Income (Loss)		(5,695)	(6,633)	(17,899)	(19,812)
MGE [Member] | Consolidation Elimination Entries [Member] | Electric [Member]
Segment Reporting Information [Line Items]
Operating revenues		454	156	1,464	383
MGE [Member] | Consolidation Elimination Entries [Member] | Gas [Member]
Segment Reporting Information [Line Items]
Operating revenues		6,034	3,851	17,256	8,860
MGE [Member] | Consolidation Elimination Entries [Member] | Non Regulated Energy [Member]
Segment Reporting Information [Line Items]
Operating revenues		10,998	9,866	32,894	29,566
MGE [Member] | Consolidation Elimination Entries [Member] | Transmission Investment [Member]
Segment Reporting Information [Line Items]
Operating revenues	[2]	$ 0	$ 0	$ 0	$ 0

[1] Amounts are shown net of the related tax expense, consistent with the presentation on the MGE Consolidated Statement of Income.

[2] As of July 31, 2016, MGE no longer consolidates MGE Energy's proportionate share of equity earnings in MGE Transco. See Footnote 3 for further discussion.