10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 10-Q

(Mark One)

☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended March 31, 2022

OR

☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from _________to_________

Commission file number	Registrant, State of Incorporation or Organization, Address of Principal Executive Offices and Telephone Number	IRS Employer Identification Number
1-32853	DUKE ENERGY CORPORATION	20-2777218

(a Delaware corporation)

526 South Church Street

Charlotte, North Carolina 28202-1803

704-382-3853

1-4928 DUKE ENERGY CAROLINAS, LLC 56-0205520

(a North Carolina limited liability company)

526 South Church Street

Charlotte, North Carolina 28202-1803

704-382-3853

1-15929 PROGRESS ENERGY, INC. 56-2155481

(a North Carolina corporation)

410 South Wilmington Street

Raleigh, North Carolina 27601-1748

704-382-3853

1-3382 DUKE ENERGY PROGRESS, LLC 56-0165465

(a North Carolina limited liability company)

410 South Wilmington Street

Raleigh, North Carolina 27601-1748

704-382-3853

1-3274 DUKE ENERGY FLORIDA, LLC 59-0247770

(a Florida limited liability company)

299 First Avenue North

St. Petersburg, Florida 33701

704-382-3853

1-1232 DUKE ENERGY OHIO, INC. 31-0240030

(an Ohio corporation)

139 East Fourth Street

Cincinnati, Ohio 45202

704-382-3853

1-3543 DUKE ENERGY INDIANA, LLC 35-0594457

(an Indiana limited liability company)

1000 East Main Street

Plainfield, Indiana 46168

704-382-3853

1-6196 PIEDMONT NATURAL GAS COMPANY, INC. 56-0556998

(a North Carolina corporation)

4720 Piedmont Row Drive

Charlotte, North Carolina 28210

704-364-3120

SECURITIES REGISTERED PURSUANT TO SECTION 12(b) OF THE ACT:

Name of each exchange on

Registrant    Title of each class    Trading symbols        which registered

Duke Energy    Common Stock, $0.001 par value    DUK    New York Stock Exchange LLC

Duke Energy    5.625% Junior Subordinated Debentures due    DUKB    New York Stock Exchange LLC

September 15, 2078

Duke Energy    Depositary Shares, each representing a 1/1,000th    DUK PR A    New York Stock Exchange LLC

interest in a share of 5.75% Series A Cumulative

Redeemable Perpetual Preferred Stock, par value

$0.001 per share

Indicate by check mark whether the registrant (1) has 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) has been subject to such filing requirements for the past 90 days.

Duke Energy Corporation (Duke Energy)	Yes	☒	No	☐	Duke Energy Florida, LLC (Duke Energy Florida)	Yes	☒	No	☐
Duke Energy Carolinas, LLC (Duke Energy Carolinas)	Yes	☒	No	☐	Duke Energy Ohio, Inc. (Duke Energy Ohio)	Yes	☒	No	☐
Progress Energy, Inc. (Progress Energy)	Yes	☒	No	☐	Duke Energy Indiana, LLC (Duke Energy Indiana)	Yes	☒	No	☐
Duke Energy Progress, LLC (Duke Energy Progress)	Yes	☒	No	☐	Piedmont Natural Gas Company, Inc. (Piedmont)	Yes	☒	No	☐

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).

Duke Energy	Yes	☒	No	☐	Duke Energy Florida	Yes	☒	No	☐
Duke Energy Carolinas	Yes	☒	No	☐	Duke Energy Ohio	Yes	☒	No	☐
Progress Energy	Yes	☒	No	☐	Duke Energy Indiana	Yes	☒	No	☐
Duke Energy Progress	Yes	☒	No	☐	Piedmont	Yes	☒	No	☐

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

Duke Energy	Large Accelerated Filer	☒	Accelerated filer	☐	Non-accelerated Filer	☐	Smaller reporting company	☐	Emerging growth company	☐
Duke Energy Carolinas	Large Accelerated Filer	☐	Accelerated filer	☐	Non-accelerated Filer	☒	Smaller reporting company	☐	Emerging growth company	☐
Progress Energy	Large Accelerated Filer	☐	Accelerated filer	☐	Non-accelerated Filer	☒	Smaller reporting company	☐	Emerging growth company	☐
Duke Energy Progress	Large Accelerated Filer	☐	Accelerated filer	☐	Non-accelerated Filer	☒	Smaller reporting company	☐	Emerging growth company	☐
Duke Energy Florida	Large Accelerated Filer	☐	Accelerated filer	☐	Non-accelerated Filer	☒	Smaller reporting company	☐	Emerging growth company	☐
Duke Energy Ohio	Large Accelerated Filer	☐	Accelerated filer	☐	Non-accelerated Filer	☒	Smaller reporting company	☐	Emerging growth company	☐
Duke Energy Indiana	Large Accelerated Filer	☐	Accelerated filer	☐	Non-accelerated Filer	☒	Smaller reporting company	☐	Emerging growth company	☐
Piedmont	Large Accelerated Filer	☐	Accelerated filer	☐	Non-accelerated Filer	☒	Smaller reporting company	☐	Emerging growth company	☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ¨

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

Duke Energy	Yes	☐	No	☒	Duke Energy Florida	Yes	☐	No	☒
Duke Energy Carolinas	Yes	☐	No	☒	Duke Energy Ohio	Yes	☐	No	☒
Progress Energy	Yes	☐	No	☒	Duke Energy Indiana	Yes	☐	No	☒
Duke Energy Progress	Yes	☐	No	☒	Piedmont	Yes	☐	No	☒

Number of shares of common stock outstanding at April 30, 2022:

Registrant	Description	Shares
Duke Energy	Common stock, $0.001 par value	769,900,482

This combined Form 10-Q is filed separately by eight registrants: Duke Energy, Duke Energy Carolinas, Progress Energy, Duke Energy Progress, Duke Energy Florida, Duke Energy Ohio, Duke Energy Indiana and Piedmont (collectively the Duke Energy Registrants). Information contained herein relating to any individual registrant is filed by such registrant solely on its own behalf. Each registrant makes no representation as to information relating exclusively to the other registrants.

Duke Energy Carolinas, Progress Energy, Duke Energy Progress, Duke Energy Florida, Duke Energy Ohio, Duke Energy Indiana and Piedmont meet the conditions set forth in General Instructions H(1)(a) and (b) of Form 10-Q and are therefore filing this form with the reduced disclosure format specified in General Instructions H(2) of Form 10-Q.

TABLE OF CONTENTS

	Cautionary Statement Regarding Forward-Looking Information
PART I. FINANCIAL INFORMATION
Item 1.	Financial Statements
	Duke Energy Corporation Financial Statements	9
	Duke Energy Carolinas, LLC Financial Statements	14
	Progress Energy, Inc. Financial Statements	18
	Duke Energy Progress, LLC Financial Statements	22
	Duke Energy Florida, LLC Financial Statements	26
	Duke Energy Ohio, Inc. Financial Statements	30
	Duke Energy Indiana, LLC Financial Statements	34
	Piedmont Natural Gas Company, Inc. Financial Statements	38
	Combined Notes to Condensed Consolidated Financial Statements
	Note 1 – Organization and Basis of Presentation	42
	Note 2 – Business Segments	43
	Note 3 – Regulatory Matters	45
	Note 4 – Commitments and Contingencies	49
	Note 5 – Debt and Credit Facilities	53
	Note 6 – Goodwill	54
	Note 7 – Related Party Transactions	55
	Note 8 – Derivatives and Hedging	56
	Note 9 – Investments in Debt and Equity Securities	61
	Note 10 – Fair Value Measurements	66
	Note 11 – Variable Interest Entities	70
	Note 12 – Revenue	74
	Note 13 – Stockholders' Equity	77
	Note 14 – Employee Benefit Plans	78
	Note 15 – Income Taxes	79
	Note 16 – Subsequent Events	79
Item 2.	Management's Discussion and Analysis of Financial Condition and Results of Operations	80
Item 3.	Quantitative and Qualitative Disclosures About Market Risk	93
Item 4.	Controls and Procedures	93
PART II. OTHER INFORMATION
Item 1.	Legal Proceedings	94
Item 1A.	Risk Factors	94
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	94
Item 6.	Exhibits	95
	Signatures	99

FORWARD-LOOKING STATEMENTS

CAUTIONARY STATEMENT REGARDING FORWARD-LOOKING INFORMATION

This document includes forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. Forward-looking statements are based on management’s beliefs and assumptions and can often be identified by terms and phrases that include “anticipate,” “believe,” “intend,” “estimate,” “expect,” “continue,” “should,” “could,” “may,” “plan,” “project,” “predict,” “will,” “potential,” “forecast,” “target,” “guidance,” “outlook” or other similar terminology. Various factors may cause actual results to be materially different than the suggested outcomes within forward-looking statements; accordingly, there is no assurance that such results will be realized. These factors include, but are not limited to:

◦The impact of the COVID-19 pandemic;

◦State, federal and foreign legislative and regulatory initiatives, including costs of compliance with existing and future environmental requirements, including those related to climate change, as well as rulings that affect cost and investment recovery or have an impact on rate structures or market prices;

◦The extent and timing of costs and liabilities to comply with federal and state laws, regulations and legal requirements related to coal ash remediation, including amounts for required closure of certain ash impoundments, are uncertain and difficult to estimate;

◦The ability to recover eligible costs, including amounts associated with coal ash impoundment retirement obligations, asset retirement and construction costs related to carbon emissions reductions, and costs related to significant weather events, and to earn an adequate return on investment through rate case proceedings and the regulatory process;

◦The costs of decommissioning nuclear facilities could prove to be more extensive than amounts estimated and all costs may not be fully recoverable through the regulatory process;

◦Costs and effects of legal and administrative proceedings, settlements, investigations and claims;

◦Industrial, commercial and residential growth or decline in service territories or customer bases resulting from sustained downturns of the economy and the economic health of our service territories or variations in customer usage patterns, including energy efficiency efforts, natural gas building and appliance electrification, and use of alternative energy sources, such as self-generation and distributed generation technologies;

◦Federal and state regulations, laws and other efforts designed to promote and expand the use of energy efficiency measures, natural gas electrification, and distributed generation technologies, such as private solar and battery storage, in Duke Energy service territories could result in a reduced number of customers, excess generation resources as well as stranded costs;

◦Advancements in technology;

◦Additional competition in electric and natural gas markets and continued industry consolidation;

◦The influence of weather and other natural phenomena on operations, including the economic, operational and other effects of severe storms, hurricanes, droughts, earthquakes and tornadoes, including extreme weather associated with climate change;

◦Changing investor, customer and other stakeholder expectations and demands including heightened emphasis on environmental, social and governance concerns;

◦The ability to successfully operate electric generating facilities and deliver electricity to customers including direct or indirect effects to the company resulting from an incident that affects the U.S. electric grid or generating resources;

◦Operational interruptions to our natural gas distribution and transmission activities;

◦The availability of adequate interstate pipeline transportation capacity and natural gas supply;

◦The impact on facilities and business from a terrorist attack, cybersecurity threats, data security breaches, operational accidents, information technology failures or other catastrophic events, such as fires, explosions, pandemic health events or other similar occurrences;

◦The inherent risks associated with the operation of nuclear facilities, including environmental, health, safety, regulatory and financial risks, including the financial stability of third-party service providers;

◦The timing and extent of changes in commodity prices and interest rates and the ability to recover such costs through the regulatory process, where appropriate, and their impact on liquidity positions and the value of underlying assets;

◦The results of financing efforts, including the ability to obtain financing on favorable terms, which can be affected by various factors, including credit ratings, interest rate fluctuations, compliance with debt covenants and conditions, an individual utility's generation mix, and general market and economic conditions;

◦Credit ratings of the Duke Energy Registrants may be different from what is expected;

◦Declines in the market prices of equity and fixed-income securities and resultant cash funding requirements for defined benefit pension plans, other post-retirement benefit plans and nuclear decommissioning trust funds;

◦Construction and development risks associated with the completion of the Duke Energy Registrants’ capital investment projects, including risks related to financing, obtaining and complying with terms of permits, meeting construction budgets and schedules and satisfying operating and environmental performance standards, as well as the ability to recover costs from customers in a timely manner, or at all;

◦Changes in rules for regional transmission organizations, including changes in rate designs and new and evolving capacity markets, and risks related to obligations created by the default of other participants;

◦The ability to control operation and maintenance costs;

◦The level of creditworthiness of counterparties to transactions;

FORWARD-LOOKING STATEMENTS

◦The ability to obtain adequate insurance at acceptable costs;

◦Employee workforce factors, including the potential inability to attract and retain key personnel;

◦The ability of subsidiaries to pay dividends or distributions to Duke Energy Corporation holding company (the Parent);

◦The performance of projects undertaken by our nonregulated businesses and the success of efforts to invest in and develop new opportunities;

◦The effect of accounting pronouncements issued periodically by accounting standard-setting bodies;

◦The impact of U.S. tax legislation to our financial condition, results of operations or cash flows and our credit ratings;

◦The impacts from potential impairments of goodwill or equity method investment carrying values;

◦Asset or business acquisitions and dispositions, including our ability to successfully consummate the second closing of the minority investment in Duke Energy Indiana, may not yield the anticipated benefits;

◦The actions of activist shareholders could disrupt our operations, impact our ability to execute on our business strategy, or cause fluctuations in the trading price of our common stock; and

◦The ability to implement our business strategy, including its carbon emission reduction goals.

Additional risks and uncertainties are identified and discussed in the Duke Energy Registrants' reports filed with the SEC and available at the SEC's website at sec.gov. In light of these risks, uncertainties and assumptions, the events described in the forward-looking statements might not occur or might occur to a different extent or at a different time than described. Forward-looking statements speak only as of the date they are made and the Duke Energy Registrants expressly disclaim an obligation to publicly update or revise any forward-looking statements, whether as a result of new information, future events or otherwise.

GLOSSARY OF TERMS

Glossary of Terms 

The following terms or acronyms used in this Form 10-Q are defined below:

Term or Acronym	Definition
2017 Settlement	Second Revised and Restated Settlement Agreement in 2017 among Duke Energy Florida, the Florida Office of Public Counsel and other customer representatives, which replaces and supplants the 2013 Settlement
2021 Settlement	Settlement Agreement in 2021 among Duke Energy Florida, the Florida Office of Public Counsel, the Florida Industrial Power Users Group, White Springs Agricultural Chemicals, Inc. d/b/a PSC Phosphate and NUCOR Steel Florida, Inc.
ACP	Atlantic Coast Pipeline, LLC, a limited liability company owned by Dominion Energy, Inc. and Duke Energy
AFS	Available for Sale
AFUDC	Allowance for funds used during construction
ARO	Asset retirement obligations
Bison	Bison Insurance Company Limited
CCR	Coal Combustion Residuals
the company	Duke Energy Corporation and its subsidiaries
COVID-19	Coronavirus Disease 2019
CRC	Cinergy Receivables Company, LLC
Crystal River Unit 3	Crystal River Unit 3 Nuclear Plant
DEFPF	Duke Energy Florida Project Finance, LLC
DEFR	Duke Energy Florida Receivables, LLC
DEPR	Duke Energy Progress Receivables, LLC
DERF	Duke Energy Receivables Finance Company, LLC
DOE	Department of Energy
Duke Energy	Duke Energy Corporation (collectively with its subsidiaries)
Duke Energy Ohio	Duke Energy Ohio, Inc.
Duke Energy Progress	Duke Energy Progress, LLC
Duke Energy Carolinas	Duke Energy Carolinas, LLC
Duke Energy Florida	Duke Energy Florida, LLC
Duke Energy Indiana	Duke Energy Indiana, LLC
Duke Energy Registrants	Duke Energy, Duke Energy Carolinas, Progress Energy, Duke Energy Progress, Duke Energy Florida, Duke Energy Ohio, Duke Energy Indiana and Piedmont
EDIT	Excess deferred income tax
EPS	Earnings Per Share
ERCOT	Electric Reliability Council of Texas
ETR	Effective tax rate
Exchange Act	Securities Exchange Act of 1934
FERC	Federal Energy Regulatory Commission
FPSC	Florida Public Service Commission
FTR	Financial transmission rights
GAAP	Generally accepted accounting principles in the U.S.
GAAP Reported Earnings	Net Income Available to Duke Energy Corporation Common Stockholders
GAAP Reported EPS	Basic Earnings Per Share Available to Duke Energy Corporation common stockholders
GIC	GIC Private Limited, Singapore's sovereign wealth fund and an experienced investor in U.S. infrastructure
GWh	Gigawatt-hours
IRS	Internal Revenue Service

GLOSSARY OF TERMS

Investment Trusts	NDTF investments and grantor trusts of Duke Energy Progress, Duke Energy Florida and Duke Energy Indiana
IURC	Indiana Utility Regulatory Commission
KPSC	Kentucky Public Service Commission
LLC	Limited Liability Company
MGP	Manufactured gas plant
MGP Settlement	Stipulation and Recommendation filed jointly by Duke Energy Ohio the staff of the PUCO, the Office of the Ohio Consumers' Counsel and the Ohio Energy Group on August 31, 2021
MW	Megawatt
MWh	Megawatt-hour
NCUC	North Carolina Utilities Commission
NDTF	Nuclear decommissioning trust funds
NPNS	Normal purchase/normal sale
OPEB	Other Post-Retirement Benefit Obligations
OVEC	Ohio Valley Electric Corporation
PBR	Performance-Based Regulation
Piedmont	Piedmont Natural Gas Company, Inc.
PJM	Pennsylvania-New Jersey-Maryland Interconnection
PPA	Purchase Power Agreement
Progress Energy	Progress Energy, Inc.
PSCSC	Public Service Commission of South Carolina
PUCO	Public Utilities Commission of Ohio
RTO	Regional Transmission Organization
Subsidiary Registrants	Duke Energy Carolinas, Progress Energy, Duke Energy Progress, Duke Energy Florida, Duke Energy Ohio, Duke Energy Indiana and Piedmont
the Tax Act	Tax Cuts and Jobs Act
TPUC	Tennessee Public Utility Commission
U.S.	United States
VIE	Variable Interest Entity

FINANCIAL STATEMENTS

ITEM 1. FINANCIAL STATEMENTS

DUKE ENERGY CORPORATION

Condensed Consolidated Statements of Operations

(Unaudited)

	Three Months Ended
	March 31,
(in millions, except per share amounts)	2022		2021
Operating Revenues
Regulated electric	$	5,933	$	5,219
Regulated natural gas	1,002		749
Nonregulated electric and other	197		182
Total operating revenues	7,132		6,150
Operating Expenses
Fuel used in electric generation and purchased power	1,817		1,443
Cost of natural gas	481		276
Operation, maintenance and other	1,630		1,402
Depreciation and amortization	1,320		1,226
Property and other taxes	392		353
Impairment of assets and other charges	215		—
Total operating expenses	5,855		4,700
Gains on Sales of Other Assets and Other, net	2		—
Operating Income	1,279		1,450
Other Income and Expenses
Equity in earnings (losses) of unconsolidated affiliates	25		(17)
Other income and expenses, net	89		127
Total other income and expenses	114		110
Interest Expense	587		535
Income Before Income Taxes	806		1,025
Income Tax (Benefit) Expense	(14)		84
Net Income	820		941
Add: Net Loss Attributable to Noncontrolling Interests	37		51
Net Income Attributable to Duke Energy Corporation	857		992
Less: Preferred Dividends	39		39
Net Income Available to Duke Energy Corporation Common Stockholders	$	818	$	953
Earnings Per Share – Basic and Diluted
Net income available to Duke Energy Corporation common stockholders
Basic and Diluted	$	1.08	$	1.25
Weighted Average Shares Outstanding
Basic and Diluted	770		769

See Notes to Condensed Consolidated Financial Statements

9

FINANCIAL STATEMENTS

DUKE ENERGY CORPORATION

Condensed Consolidated Statements of Comprehensive Income

(Unaudited)

	Three Months Ended
	March 31,
(in millions)	2022		2021
Net Income	$	820	$	941
Other Comprehensive Income (Loss), net of tax(a)
Pension and OPEB adjustments	2		2
Net unrealized gains on cash flow hedges	113		29
Reclassification into earnings from cash flow hedges	5		3
Unrealized losses on available-for-sale securities	(13)		(8)
Other Comprehensive Income, net of tax	107		26
Comprehensive Income	927		967
Add: Comprehensive Loss Attributable to Noncontrolling Interests	29		44
Comprehensive Income Attributable to Duke Energy	956		1,011
Less: Preferred Dividends	39		39
Comprehensive Income Available to Duke Energy Corporation Common Stockholders	$	917	$	972

(a)Net of income tax impacts of approximately $32 million and $8 million for the three months ended March 31, 2022, and 2021, respectively.

See Notes to Condensed Consolidated Financial Statements

10

FINANCIAL STATEMENTS

DUKE ENERGY CORPORATION

Condensed Consolidated Balance Sheets

(Unaudited)

(in millions)	March 31, 2022		December 31, 2021
ASSETS
Current Assets
Cash and cash equivalents	$	853	$	343
Receivables (net of allowance for doubtful accounts of $68 at 2022 and $46 at 2021)	1,148		1,173
Receivables of VIEs (net of allowance for doubtful accounts of $72 at 2022 and $76 at 2021)	2,590		2,437
Inventory	3,171		3,199
Regulatory assets (includes $105 at 2022 and 2021 related to VIEs)	2,334		2,150
Other (includes $249 at 2022 and $256 at 2021 related to VIEs)	946		638
Total current assets	11,042		9,940
Property, Plant and Equipment
Cost	163,700		161,819
Accumulated depreciation and amortization	(51,517)		(50,555)
Facilities to be retired, net	133		144
Net property, plant and equipment	112,316		111,408
Other Noncurrent Assets
Goodwill	19,303		19,303
Regulatory assets (includes $1,800 at 2022 and $1,823 at 2021 related to VIEs)	12,506		12,487
Nuclear decommissioning trust funds	9,827		10,401
Operating lease right-of-use assets, net	1,255		1,266
Investments in equity method unconsolidated affiliates	976		970
Other (includes $111 at 2022 and $92 at 2021 related to VIEs)	3,995		3,812
Total other noncurrent assets	47,862		48,239
Total Assets	$	171,220	$	169,587
LIABILITIES AND EQUITY
Current Liabilities
Accounts payable	$	3,175	$	3,629
Notes payable and commercial paper	3,262		3,304
Taxes accrued	642		749
Interest accrued	575		533
Current maturities of long-term debt (includes $395 at 2022 and $243 at 2021 related to VIEs)	3,884		3,387
Asset retirement obligations	648		647
Regulatory liabilities	1,238		1,211
Other	2,001		2,471
Total current liabilities	15,425		15,931
Long-Term Debt (includes $4,687 at 2022 and $4,854 at 2021 related to VIEs)	62,196		60,448
Other Noncurrent Liabilities
Deferred income taxes	9,673		9,379
Asset retirement obligations	12,112		12,129
Regulatory liabilities	16,037		16,152
Operating lease liabilities	1,068		1,074
Accrued pension and other post-retirement benefit costs	832		855
Investment tax credits	831		833
Other (includes $360 at 2022 and $319 at 2021 related to VIEs)	1,794		1,650
Total other noncurrent liabilities	42,347		42,072
Commitments and Contingencies
Equity
Preferred stock, Series A, $0.001 par value, 40 million depositary shares authorized and outstanding at 2022 and 2021	973		973
Preferred stock, Series B, $0.001 par value, 1 million shares authorized and outstanding at 2022 and 2021	989		989
Common stock, $0.001 par value, 2 billion shares authorized; 770 million shares outstanding at 2022 and 769 million shares outstanding at 2021	1		1
Additional paid-in capital	44,364		44,371
Retained earnings	3,323		3,265
Accumulated other comprehensive loss	(204)		(303)
Total Duke Energy Corporation stockholders' equity	49,446		49,296
Noncontrolling interests	1,806		1,840
Total equity	51,252		51,136
Total Liabilities and Equity	$	171,220	$	169,587

See Notes to Condensed Consolidated Financial Statements

11

FINANCIAL STATEMENTS

DUKE ENERGY CORPORATION

Condensed Consolidated Statements of Cash Flows

(Unaudited)

	Three Months Ended
	March 31,
(in millions)	2022		2021
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$	820	$	941
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and accretion (including amortization of nuclear fuel)	1,480		1,385
Equity in (earnings) losses of unconsolidated affiliates	(25)		17
Equity component of AFUDC	(46)		(42)
Impairment of assets and other charges	215		—
Deferred income taxes	(11)		86
Payments for asset retirement obligations	(119)		(114)
Provision for rate refunds	(31)		—
(Increase) decrease in
Net realized and unrealized mark-to-market and hedging transactions	215		—
Receivables	5		377
Inventory	28		91
Other current assets	(327)		(47)
Increase (decrease) in
Accounts payable	(160)		(467)
Taxes accrued	(90)		104
Other current liabilities	(269)		(263)
Other assets	(26)		51
Other liabilities	136		(31)
Net cash provided by operating activities	1,795		2,088
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(2,551)		(2,215)
Contributions to equity method investments	(17)		—
Purchases of debt and equity securities	(1,516)		(1,584)
Proceeds from sales and maturities of debt and equity securities	1,530		1,601
Disbursements to canceled equity method investments	—		(855)
Other	(145)		(84)
Net cash used in investing activities	(2,699)		(3,137)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from the:
Issuance of long-term debt	3,506		608
Issuance of common stock	—		5
Payments for the redemption of long-term debt	(1,215)		(76)
Proceeds from the issuance of short-term debt with original maturities greater than 90 days	—		50
Payments for the redemption of short-term debt with original maturities greater than 90 days	(257)		(909)
Notes payable and commercial paper	213		2,046
Contributions from noncontrolling interests	23		303
Dividends paid	(799)		(783)
Other	(67)		(59)
Net cash provided by financing activities	1,404		1,185
Net increase in cash, cash equivalents and restricted cash	500		136
Cash, cash equivalents and restricted cash at beginning of period	520		556
Cash, cash equivalents and restricted cash at end of period	$	1,020	$	692
Supplemental Disclosures:
Significant non-cash transactions:
Accrued capital expenditures	$	1,028	$	921

See Notes to Condensed Consolidated Financial Statements

12

FINANCIAL STATEMENTS

DUKE ENERGY CORPORATION

Condensed Consolidated Statements of Changes in Equity

(Unaudited)

	Three Months Ended March 31, 2021 and 2022
										Accumulated Other Comprehensive
										(Loss) Income
												Net Unrealized				Total
										Net Gains		Gains (Losses)				Duke Energy
			Common			Additional				(Losses) on		on Available-		Pension and		Corporation
	Preferred		Stock	Common		Paid-in		Retained		Cash Flow		for-Sale-		OPEB		Stockholders'		Noncontrolling		Total
(in millions)	Stock		Shares	Stock		Capital		Earnings		Hedges		Securities		Adjustments		Equity		Interests		Equity
Balance at December 31, 2020	$	1,962	769	$	1	$	43,767	$	2,471	$	(167)	$	6	$	(76)	$	47,964	$	1,220	$	49,184
Net income (loss)	—		—	—		—		953		—		—		—		953		(51)		902
Other comprehensive income (loss)	—		—	—		—		—		25		(8)		2		19		7		26
Common stock issuances, including dividend reinvestment and employee benefits	—		—	—		(3)		—		—		—		—		(3)		—		(3)
Common stock dividends	—		—	—		—		(744)		—		—		—		(744)		—		(744)
Contributions from noncontrolling interests, net of transaction costs(a)	—		—	—		(3)		—		—		—		—		(3)		303		300
Distributions to noncontrolling interest in subsidiaries	—		—	—		—		—		—		—		—		—		(7)		(7)
Balance at March 31, 2021	$	1,962	769	$	1	$	43,761	$	2,680	$	(142)	$	(2)	$	(74)	$	48,186	$	1,472	$	49,658
Balance at December 31, 2021	$	1,962	769	$	1	$	44,371	$	3,265	$	(232)	$	(2)	$	(69)	$	49,296	$	1,840	$	51,136
Net income (loss)	—		—	—		—		818		—		—		—		818		(37)		781
Other comprehensive income (loss)	—		—	—		—		—		110		(13)		2		99		8		107
Common stock issuances, including dividend reinvestment and employee benefits	—		1	—		(7)		—		—		—		—		(7)		—		(7)
Common stock dividends	—		—	—		—		(760)		—		—		—		(760)		—		(760)
Contributions from noncontrolling interests, net of transaction costs(a)	—		—	—		—		—		—		—		—		—		23		23
Distributions to noncontrolling interest in subsidiaries	—		—	—		—		—		—		—		—		—		(28)		(28)
Balance at March 31, 2022	$	1,962	770	$	1	$	44,364	$	3,323	$	(122)	$	(15)	$	(67)	$	49,446	$	1,806	$	51,252

(a)Relates to tax equity financing activity in the Commercial Renewables segment.

See Notes to Condensed Consolidated Financial Statements

13

FINANCIAL STATEMENTS

DUKE ENERGY CAROLINAS, LLC

Condensed Consolidated Statements of Operations and Comprehensive Income

(Unaudited)

	Three Months Ended
	March 31,
(in millions)	2022		2021
Operating Revenues	$	1,888	$	1,716
Operating Expenses
Fuel used in electric generation and purchased power	448		422
Operation, maintenance and other	512		441
Depreciation and amortization	379		359
Property and other taxes	93		83
Impairment of assets and other charges	3		—
Total operating expenses	1,435		1,305
Operating Income	453		411
Other Income and Expenses, net	55		48
Interest Expense	141		124
Income Before Income Taxes	367		335
Income Tax Expense	27		23
Net Income and Comprehensive Income	$	340	$	312

See Notes to Condensed Consolidated Financial Statements

14

FINANCIAL STATEMENTS

DUKE ENERGY CAROLINAS, LLC

Condensed Consolidated Balance Sheets

(Unaudited)

(in millions)	March 31, 2022		December 31, 2021
ASSETS
Current Assets
Cash and cash equivalents	$	4	$	7
Receivables (net of allowance for doubtful accounts of $22 at 2022 and $1 at 2021)	234		300
Receivables of VIEs (net of allowance for doubtful accounts of $30 at 2022 and $41 at 2021)	858		844
Receivables from affiliated companies	134		190
Notes receivable from affiliated companies	492		—
Inventory	1,040		1,026
Regulatory assets (includes $12 at 2022 and 2021 related to VIEs)	652		544
Other (includes $5 at 2022 and $0 at 2021 related to VIEs)	246		95
Total current assets	3,660		3,006
Property, Plant and Equipment
Cost	52,423		51,874
Accumulated depreciation and amortization	(18,058)		(17,854)
Facilities to be retired, net	98		102
Net property, plant and equipment	34,463		34,122
Other Noncurrent Assets
Regulatory assets (includes $217 at 2022 and $220 at 2021 related to VIEs)	3,085		2,935
Nuclear decommissioning trust funds	5,441		5,759
Operating lease right-of-use assets, net	87		92
Other	1,297		1,248
Total other noncurrent assets	9,910		10,034
Total Assets	$	48,033	$	47,162
LIABILITIES AND EQUITY
Current Liabilities
Accounts payable	$	752	$	988
Accounts payable to affiliated companies	267		266
Notes payable to affiliated companies	—		226
Taxes accrued	124		274
Interest accrued	140		125
Current maturities of long-term debt (includes $10 at 2022 and $5 at 2021 related to VIEs)	1,367		362
Asset retirement obligations	251		249
Regulatory liabilities	465		487
Other	442		546
Total current liabilities	3,808		3,523
Long-Term Debt (includes $722 at 2022 and $703 at 2021 related to VIEs)	12,803		12,595
Long-Term Debt Payable to Affiliated Companies	300		318
Other Noncurrent Liabilities
Deferred income taxes	3,769		3,634
Asset retirement obligations	5,067		5,052
Regulatory liabilities	7,151		7,198
Operating lease liabilities	74		78
Accrued pension and other post-retirement benefit costs	48		50
Investment tax credits	286		287
Other	545		536
Total other noncurrent liabilities	16,940		16,835
Commitments and Contingencies
Equity
Member's equity	14,188		13,897
Accumulated other comprehensive loss	(6)		(6)
Total equity	14,182		13,891
Total Liabilities and Equity	$	48,033	$	47,162

See Notes to Condensed Consolidated Financial Statements

15

FINANCIAL STATEMENTS

DUKE ENERGY CAROLINAS, LLC

Condensed Consolidated Statements of Cash Flows

(Unaudited)

	Three Months Ended
	March 31,
(in millions)	2022		2021
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$	340	$	312
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization (including amortization of nuclear fuel)	447		428
Equity component of AFUDC	(22)		(16)
Impairment of assets and other charges	3		—
Deferred income taxes	44		(8)
Payments for asset retirement obligations	(35)		(35)
Provision for rate refunds	(18)		—
(Increase) decrease in
Net realized and unrealized mark-to-market and hedging transactions	50		—
Receivables	77		156
Receivables from affiliated companies	56		5
Inventory	(13)		(11)
Other current assets	(230)		(48)
Increase (decrease) in
Accounts payable	(225)		(255)
Accounts payable to affiliated companies	(17)		7
Taxes accrued	(150)		62
Other current liabilities	56		(77)
Other assets	6		43
Other liabilities	(44)		(17)
Net cash provided by operating activities	325		546
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(717)		(622)
Purchases of debt and equity securities	(1,008)		(1,128)
Proceeds from sales and maturities of debt and equity securities	1,008		1,128
Notes receivable from affiliated companies	(492)		—
Other	(54)		(43)
Net cash used in investing activities	(1,263)		(665)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from the issuance of long-term debt	1,217		142
Payments for the redemption of long-term debt	(1)		(33)
Notes payable to affiliated companies	(226)		2
Distributions to parent	(50)		—
Other	(1)		(1)
Net cash provided by financing activities	939		110
Net increase (decrease) in cash, cash equivalents and restricted cash	1		(9)
Cash, cash equivalents and restricted cash at beginning of period	8		21
Cash, cash equivalents and restricted cash at end of period	$	9	$	12
Supplemental Disclosures:
Significant non-cash transactions:
Accrued capital expenditures	$	352	$	268

See Notes to Condensed Consolidated Financial Statements

16

FINANCIAL STATEMENTS

DUKE ENERGY CAROLINAS, LLC

Condensed Consolidated Statements of Changes in Equity

(Unaudited)

	Three Months Ended March 31, 2021 and 2022
			Accumulated Other
			Comprehensive
			Loss
	Member's		Net Losses on		Total
(in millions)	Equity		Cash Flow Hedges		Equity
Balance at December 31, 2020	$	13,161	$	(7)	$	13,154
Net income	312		—		312
Balance at March 31, 2021	$	13,473	$	(7)	$	13,466
Balance at December 31, 2021	$	13,897	$	(6)	$	13,891
Net income	340		—		340
Distributions to parent	(50)		—		(50)
Other	1		—		1
Balance at March 31, 2022	$	14,188	$	(6)	$	14,182

See Notes to Condensed Consolidated Financial Statements

17

FINANCIAL STATEMENTS

PROGRESS ENERGY, INC.

Condensed Consolidated Statements of Operations and Comprehensive Income

(Unaudited)

	Three Months Ended
	March 31,
(in millions)	2022		2021
Operating Revenues	$	2,992	$	2,505
Operating Expenses
Fuel used in electric generation and purchased power	1,064		795
Operation, maintenance and other	645		601
Depreciation and amortization	536		485
Property and other taxes	152		142
Total operating expenses	2,397		2,023
Gains on Sales of Other Assets and Other, net	2		—
Operating Income	597		482
Other Income and Expenses, net	35		43
Interest Expense	211		192
Income Before Income Taxes	421		333
Income Tax Expense	67		43
Net Income	$	354	$	290
Net Income	$	354	$	290
Other Comprehensive Income, net of tax
Net unrealized gains on cash flow hedges	1		1
Unrealized losses on available-for-sale securities	(2)		(1)
Other Comprehensive Loss, net of tax	(1)		—
Comprehensive Income	$	353	$	290

See Notes to Condensed Consolidated Financial Statements

18

FINANCIAL STATEMENTS

PROGRESS ENERGY, INC.

Condensed Consolidated Balance Sheets

(Unaudited)

(in millions)	March 31, 2022		December 31, 2021
ASSETS
Current Assets
Cash and cash equivalents	$	63	$	70
Receivables (net of allowance for doubtful accounts of $11 at 2022 and 2021)	286		247
Receivables of VIEs (net of allowance for doubtful accounts of $40 at 2022 and $25 at 2021)	1,166		1,006
Receivables from affiliated companies	37		121
Notes receivable from affiliated companies	237		—
Inventory	1,403		1,398
Regulatory assets (includes $93 at 2022 and 2021 related to VIEs)	1,101		1,030
Other (includes $27 at 2022 and $39 at 2021 related to VIEs)	319		125
Total current assets	4,612		3,997
Property, Plant and Equipment
Cost	61,629		60,894
Accumulated depreciation and amortization	(19,702)		(19,214)
Facilities to be retired, net	24		26
Net property, plant and equipment	41,951		41,706
Other Noncurrent Assets
Goodwill	3,655		3,655
Regulatory assets (includes $1,583 at 2022 and $1,603 at 2021 related to VIEs)	6,024		5,909
Nuclear decommissioning trust funds	4,385		4,642
Operating lease right-of-use assets, net	701		691
Other	1,336		1,242
Total other noncurrent assets	16,101		16,139
Total Assets	$	62,664	$	61,842
LIABILITIES AND EQUITY
Current Liabilities
Accounts payable	$	982	$	1,099
Accounts payable to affiliated companies	364		506
Notes payable to affiliated companies	377		2,809
Taxes accrued	157		128
Interest accrued	195		192
Current maturities of long-term debt (includes $88 at 2022 and $71 at 2021 related to VIEs)	1,095		1,082
Asset retirement obligations	268		275
Regulatory liabilities	469		478
Other	760		868
Total current liabilities	4,667		7,437
Long-Term Debt (includes $2,246 at 2022 and $2,293 at 2021 related to VIEs)	20,412		19,591
Long-Term Debt Payable to Affiliated Companies	150		150
Other Noncurrent Liabilities
Deferred income taxes	4,702		4,564
Asset retirement obligations	5,821		5,837
Regulatory liabilities	5,671		5,566
Operating lease liabilities	619		606
Accrued pension and other post-retirement benefit costs	409		417
Other	531		526
Total other noncurrent liabilities	17,753		17,516
Commitments and Contingencies
Equity
Common Stock, $0.01 par value, 100 shares authorized and outstanding at 2022 and 2021	—		—
Additional paid-in capital	9,149		9,149
Retained earnings	10,543		8,007
Accumulated other comprehensive loss	(12)		(11)
Total Progress Energy, Inc. stockholders' equity	19,680		17,145
Noncontrolling interests	2		3
Total equity	19,682		17,148
Total Liabilities and Equity	$	62,664	$	61,842

See Notes to Condensed Consolidated Financial Statements

19

FINANCIAL STATEMENTS

PROGRESS ENERGY, INC.

Condensed Consolidated Statements of Cash Flows

(Unaudited)

	Three Months Ended
	March 31,
(in millions)	2022		2021
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$	354	$	290
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and accretion (including amortization of nuclear fuel)	625		575
Equity component of AFUDC	(12)		(13)
Deferred income taxes	72		79
Payments for asset retirement obligations	(68)		(69)
Provision for rate refunds	(16)		—
(Increase) decrease in
Net realized and unrealized mark-to-market and hedging transactions	164		6
Receivables	(123)		214
Receivables from affiliated companies	102		81
Inventory	(5)		39
Other current assets	(224)		(150)
Increase (decrease) in
Accounts payable	26		(69)
Accounts payable to affiliated companies	(142)		32
Taxes accrued	30		23
Other current liabilities	(113)		(60)
Other assets	(80)		(27)
Other liabilities	40		(64)
Net cash provided by operating activities	630		887
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(981)		(796)
Purchases of debt and equity securities	(531)		(517)
Proceeds from sales and maturities of debt and equity securities	548		537
Notes receivable from affiliated companies	(237)		—
Other	(28)		(59)
Net cash used in investing activities	(1,229)		(835)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from the issuance of long-term debt	889		98
Payments for the redemption of long-term debt	(54)		(34)
Notes payable to affiliated companies	(1)		(125)
Dividends to parent	(250)		—
Other	(3)		(2)
Net cash provided by (used in) financing activities	581		(63)
Net (decrease) increase in cash, cash equivalents and restricted cash	(18)		(11)
Cash, cash equivalents and restricted cash at beginning of period	113		200
Cash, cash equivalents and restricted cash at end of period	$	95	$	189
Supplemental Disclosures:
Significant non-cash transactions:
Accrued capital expenditures	$	349	$	317

See Notes to Condensed Consolidated Financial Statements

20

FINANCIAL STATEMENTS

PROGRESS ENERGY, INC.

Condensed Consolidated Statements of Changes in Equity

(Unaudited)

	Three Months Ended March 31, 2021 and 2022
					Accumulated Other Comprehensive Loss
					Net Gains		Net Unrealized				Total Progress
	Additional				(Losses) on		Gains (Losses) on		Pension and		Energy, Inc.
	Paid-in		Retained		Cash Flow		Available-for-		OPEB		Stockholders'		Noncontrolling		Total
	Capital		Earnings		Hedges		Sale Securities		Adjustments		Equity		Interests		Equity
Balance at December 31, 2020	$	9,143	$	7,109	$	(5)	$	(2)	$	(8)	$	16,237	$	4	$	16,241
Net income	—		290		—		—		—		290		—		290
Other comprehensive income (loss)	—		—		1		(1)		—		—		—		—
Distributions to noncontrolling interests	—		—		—		—		—		—		(1)		(1)
Other	—		1		—		—		—		1		(1)		—
Balance at March 31, 2021	$	9,143	$	7,400	$	(4)	$	(3)	$	(8)	$	16,528	$	2	$	16,530
Balance at December 31, 2021	$	9,149	$	8,007	$	(2)	$	(2)	$	(7)	$	17,145	$	3	$	17,148
Net income	—		354		—		—		—		354		—		354
Other comprehensive income (loss)	—		—		1		(2)		—		(1)		—		(1)
Distributions to noncontrolling interests	—		—		—		—		—		—		(1)		(1)
Dividends to parent	—		(250)		—		—		—		(250)		—		(250)
Equitization of certain notes payable to affiliates	—		2,431		—		—		—		2,431		—		2,431
Other	—		1		—		—		—		1		—		1
Balance at March 31, 2022	$	9,149	$	10,543	$	(1)	$	(4)	$	(7)	$	19,680	$	2	$	19,682

See Notes to Condensed Consolidated Financial Statements

21

FINANCIAL STATEMENTS

DUKE ENERGY PROGRESS, LLC

Condensed Consolidated Statements of Operations and Comprehensive Income

(Unaudited)

	Three Months Ended
	March 31,
(in millions)	2022		2021
Operating Revenues	$	1,632	$	1,401
Operating Expenses
Fuel used in electric generation and purchased power	574		436
Operation, maintenance and other	391		357
Depreciation and amortization	306		285
Property and other taxes	49		49
Total operating expenses	1,320		1,127
Gains on Sales of Other Assets and Other, net	1		—
Operating Income	313		274
Other Income and Expenses, net	22		24
Interest Expense	85		69
Income Before Income Taxes	250		229
Income Tax Expense	35		19
Net Income and Comprehensive Income	$	215	$	210

See Notes to Condensed Consolidated Financial Statements

22

FINANCIAL STATEMENTS

DUKE ENERGY PROGRESS, LLC

Condensed Consolidated Balance Sheets

(Unaudited)

(in millions)	March 31, 2022		December 31, 2021
ASSETS
Current Assets
Cash and cash equivalents	$	42	$	35
Receivables (net of allowance for doubtful accounts of $4 at 2022 and 2021)	188		127
Receivables of VIEs (net of allowance for doubtful accounts of $27 at 2022 and $17 at 2021)	658		574
Receivables from affiliated companies	20		65
Notes receivable from affiliated companies	328		—
Inventory	940		921
Regulatory assets (includes $39 at 2022 and 2021 related to VIEs)	595		533
Other (includes $14 in 2022 and $0 in 2021 related to VIEs)	200		83
Total current assets	2,971		2,338
Property, Plant and Equipment
Cost	37,361		37,018
Accumulated depreciation and amortization	(13,691)		(13,387)
Facilities to be retired, net	24		26
Net property, plant and equipment	23,694		23,657
Other Noncurrent Assets
Regulatory assets (includes $711 at 2022 and $720 at 2021 related to VIEs)	4,124		4,118
Nuclear decommissioning trust funds	3,872		4,089
Operating lease right-of-use assets, net	410		389
Other	867		792
Total other noncurrent assets	9,273		9,388
Total Assets	$	35,938	$	35,383
LIABILITIES AND EQUITY
Current Liabilities
Accounts payable	$	450	$	476
Accounts payable to affiliated companies	260		310
Notes payable to affiliated companies	—		172
Taxes accrued	77		163
Interest accrued	76		96
Current maturities of long-term debt (includes $32 at 2022 and $15 at 2021 related to VIEs)	568		556
Asset retirement obligations	268		274
Regulatory liabilities	378		381
Other	400		448
Total current liabilities	2,477		2,876
Long-Term Debt (includes $1,080 at 2022 and $1,097 at 2021 related to VIEs)	10,396		9,543
Long-Term Debt Payable to Affiliated Companies	150		150
Other Noncurrent Liabilities
Deferred income taxes	2,275		2,208
Asset retirement obligations	5,411		5,401
Regulatory liabilities	4,898		4,868
Operating lease liabilities	372		350
Accrued pension and other post-retirement benefit costs	218		221
Investment tax credits	128		128
Other	96		87
Total other noncurrent liabilities	13,398		13,263
Commitments and Contingencies
Equity
Member's Equity	9,517		9,551
Total Liabilities and Equity	$	35,938	$	35,383

See Notes to Condensed Consolidated Financial Statements

23

FINANCIAL STATEMENTS

DUKE ENERGY PROGRESS, LLC

Condensed Consolidated Statements of Cash Flows

(Unaudited)

	Three Months Ended
	March 31,
(in millions)	2022		2021
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$	215	$	210
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization (including amortization of nuclear fuel)	350		331
Equity component of AFUDC	(7)		(8)
Deferred income taxes	19		6
Payments for asset retirement obligations	(41)		(46)
Provision for rate refunds	(16)		—
(Increase) decrease in
Net realized and unrealized mark-to-market and hedging transactions	164		2
Receivables	(70)		131
Receivables from affiliated companies	63		(20)
Inventory	(19)		29
Other current assets	(75)		(21)
Increase (decrease) in
Accounts payable	18		(62)
Accounts payable to affiliated companies	(50)		10
Taxes accrued	(85)		(12)
Other current liabilities	(67)		(25)
Other assets	(56)		(35)
Other liabilities	47		(15)
Net cash provided by operating activities	390		475
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(467)		(400)
Purchases of debt and equity securities	(481)		(382)
Proceeds from sales and maturities of debt and equity securities	480		380
Notes receivable from affiliated companies	(328)		—
Other	(19)		(29)
Net cash used in investing activities	(815)		(431)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from the issuance of long-term debt	889		98
Payments for the:
Payments for the redemption of long-term debt	(21)		(2)
Notes payable to affiliated companies	(172)		(132)
Distributions to parent	(250)		—
Other	(1)		(1)
Net cash provided by (used in) financing activities	445		(37)
Net increase in cash, cash equivalents and restricted cash	20		7
Cash, cash equivalents and restricted cash at beginning of period	39		39
Cash, cash equivalents and restricted cash at end of period	$	59	$	46
Supplemental Disclosures:
Significant non-cash transactions:
Accrued capital expenditures	$	111	$	96

See Notes to Condensed Consolidated Financial Statements

24

FINANCIAL STATEMENTS

DUKE ENERGY PROGRESS, LLC

Condensed Consolidated Statements of Changes in Equity

(Unaudited)

	Three Months Ended
	March 31, 2021 and 2022
(in millions)	Member's Equity
Balance at December 31, 2020	$	9,260
Net income	210
Balance at March 31, 2021	$	9,470
Balance at December 31, 2021	$	9,551
Net income	215
Distributions to parent	(250)
Other	1
Balance at March 31, 2022	$	9,517

See Notes to Condensed Consolidated Financial Statements

25

FINANCIAL STATEMENTS

DUKE ENERGY FLORIDA, LLC

Condensed Consolidated Statements of Operations and Comprehensive Income

(Unaudited)

	Three Months Ended
	March 31,
(in millions)	2022		2021
Operating Revenues	$	1,355	$	1,101
Operating Expenses
Fuel used in electric generation and purchased power	490		359
Operation, maintenance and other	249		242
Depreciation and amortization	231		200
Property and other taxes	103		93
Total operating expenses	1,073		894
Gains on Sales of Other Assets and Other, net	1		—
Operating Income	283		207
Other Income and Expenses, net	15		18
Interest Expense	84		80
Income Before Income Taxes	214		145
Income Tax Expense	43		28
Net Income	$	171	$	117
Other Comprehensive Loss, net of tax
Unrealized losses on available-for-sale securities	(1)		(1)
Comprehensive Income	$	170	$	116

See Notes to Condensed Consolidated Financial Statements

26

FINANCIAL STATEMENTS

DUKE ENERGY FLORIDA, LLC

Condensed Consolidated Balance Sheets

(Unaudited)

(in millions)	March 31, 2022		December 31, 2021
ASSETS
Current Assets
Cash and cash equivalents	$	13	$	23
Receivables (net of allowance for doubtful accounts of $8 at 2022 and 2021)	97		117
Receivables of VIEs (net of allowance for doubtful accounts of $13 at 2022 and $8 at 2021)	508		432
Receivables from affiliated companies	16		16
Inventory	463		477
Regulatory assets (includes $54 at 2022 and 2021 related to VIEs)	505		497
Other (includes $13 at 2022 and $39 at 2021 related to VIEs)	79		80
Total current assets	1,681		1,642
Property, Plant and Equipment
Cost	24,257		23,865
Accumulated depreciation and amortization	(6,003)		(5,819)
Net property, plant and equipment	18,254		18,046
Other Noncurrent Assets
Regulatory assets (includes $872 at 2022 and $883 at 2021 related to VIEs)	1,899		1,791
Nuclear decommissioning trust funds	514		553
Operating lease right-of-use assets, net	291		302
Other	418		399
Total other noncurrent assets	3,122		3,045
Total Assets	$	23,057	$	22,733
LIABILITIES AND EQUITY
Current Liabilities
Accounts payable	$	532	$	623
Accounts payable to affiliated companies	120		209
Notes payable to affiliated companies	468		199
Taxes accrued	96		51
Interest accrued	84		68
Current maturities of long-term debt (includes $56 at 2022 and 2021 related to VIEs)	77		76
Asset retirement obligations	1		1
Regulatory liabilities	91		98
Other	349		408
Total current liabilities	1,818		1,733
Long-Term Debt (includes $1,166 at 2022 and $1,196 at 2021 related to VIEs)	8,374		8,406
Other Noncurrent Liabilities
Deferred income taxes	2,503		2,434
Asset retirement obligations	411		436
Regulatory liabilities	772		698
Operating lease liabilities	247		256
Accrued pension and other post-retirement benefit costs	161		166
Other	306		309
Total other noncurrent liabilities	4,400		4,299
Commitments and Contingencies
Equity
Member's equity	8,469		8,298
Accumulated other comprehensive loss	(4)		(3)
Total equity	8,465		8,295
Total Liabilities and Equity	$	23,057	$	22,733

See Notes to Condensed Consolidated Financial Statements

27

FINANCIAL STATEMENTS

DUKE ENERGY FLORIDA, LLC

Condensed Consolidated Statements of Cash Flows

(Unaudited)

	Three Months Ended
	March 31,
(in millions)	2022		2021
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$	171	$	117
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and accretion	273		243
Equity component of AFUDC	(5)		(4)
Deferred income taxes	52		74
Payments for asset retirement obligations	(28)		(24)
(Increase) decrease in
Net realized and unrealized mark-to-market and hedging transactions	—		2
Receivables	(54)		83
Receivables from affiliated companies	—		(4)
Inventory	14		10
Other current assets	(72)		(101)
Increase (decrease) in
Accounts payable	9		(7)
Accounts payable to affiliated companies	(89)		23
Taxes accrued	45		3
Other current liabilities	(52)		(41)
Other assets	(24)		12
Other liabilities	(6)		(48)
Net cash provided by operating activities	234		338
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(514)		(396)
Purchases of debt and equity securities	(49)		(134)
Proceeds from sales and maturities of debt and equity securities	69		157
Other	(10)		(30)
Net cash used in investing activities	(504)		(403)
CASH FLOWS FROM FINANCING ACTIVITIES
Payments for the redemption of long-term debt	(34)		(33)
Notes payable to affiliated companies	269		83
Other	(1)		—
Net cash provided by financing activities	234		50
Net decrease in cash, cash equivalents and restricted cash	(36)		(15)
Cash, cash equivalents and restricted cash at beginning of period	62		50
Cash, cash equivalents and restricted cash at end of period	$	26	$	35
Supplemental Disclosures:
Significant non-cash transactions:
Accrued capital expenditures	$	237	$	222

See Notes to Condensed Consolidated Financial Statements

28

FINANCIAL STATEMENTS

DUKE ENERGY FLORIDA, LLC

Condensed Consolidated Statements of Changes in Equity

(Unaudited)

	Three Months Ended March 31, 2021 and 2022
			Accumulated
			Other
			Comprehensive
			Loss
			Net Unrealized
			Losses on
	Member's		Available-for-Sale		Total
(in millions)	Equity		Securities		Equity
Balance at December 31, 2020	$	7,560	$	(2)	$	7,558
Net income	117		—		117
Other comprehensive loss	—		(1)		(1)
Balance at March 31, 2021	$	7,677	$	(3)	$	7,674
Balance at December 31, 2021	$	8,298	$	(3)	$	8,295
Net income	171		—		171
Other comprehensive loss	—		(1)		(1)
Balance at March 31, 2022	$	8,469	$	(4)	$	8,465

See Notes to Condensed Consolidated Financial Statements

29

FINANCIAL STATEMENTS

DUKE ENERGY OHIO, INC.

Condensed Consolidated Statements of Operations and Comprehensive Income

(Unaudited)

	Three Months Ended
	March 31,
(in millions)	2022		2021
Operating Revenues
Regulated electric	$	412	$	363
Regulated natural gas	226		169
Total operating revenues	638		532
Operating Expenses
Fuel used in electric generation and purchased power	127		82
Cost of natural gas	107		51
Operation, maintenance and other	178		108
Depreciation and amortization	80		74
Property and other taxes	101		92
Total operating expenses	593		407
Operating Income	45		125
Other Income and Expenses, net	6		5
Interest Expense	30		25
Income Before Income Taxes	21		105
Income Tax (Benefit) Expense	(56)		14
Net Income and Comprehensive Income	$	77	$	91

See Notes to Condensed Consolidated Financial Statements

30

FINANCIAL STATEMENTS

DUKE ENERGY OHIO, INC.

Condensed Consolidated Balance Sheets

(Unaudited)

(in millions)	March 31, 2022		December 31, 2021
ASSETS
Current Assets
Cash and cash equivalents	$	15	$	13
Receivables (net of allowance for doubtful accounts of $4 at 2022 and 2021)	101		96
Receivables from affiliated companies	93		122
Notes receivable from affiliated companies	—		15
Inventory	114		116
Regulatory assets	60		72
Other	23		57
Total current assets	406		491
Property, Plant and Equipment
Cost	11,818		11,725
Accumulated depreciation and amortization	(3,102)		(3,106)
Generation facilities to be retired, net	—		6
Net property, plant and equipment	8,716		8,625
Other Noncurrent Assets
Goodwill	920		920
Regulatory assets	584		635
Operating lease right-of-use assets, net	18		19
Other	87		84
Total other noncurrent assets	1,609		1,658
Total Assets	$	10,731	$	10,774
LIABILITIES AND EQUITY
Current Liabilities
Accounts payable	$	379	$	348
Accounts payable to affiliated companies	68		64
Notes payable to affiliated companies	123		103
Taxes accrued	219		275
Interest accrued	32		30
Asset retirement obligations	13		13
Regulatory liabilities	67		62
Other	73		82
Total current liabilities	974		977
Long-Term Debt	3,168		3,168
Long-Term Debt Payable to Affiliated Companies	25		25
Other Noncurrent Liabilities
Deferred income taxes	1,078		1,050
Asset retirement obligations	124		123
Regulatory liabilities	593		739
Operating lease liabilities	18		18
Accrued pension and other post-retirement benefit costs	109		109
Other	100		101
Total other noncurrent liabilities	2,022		2,140
Commitments and Contingencies
Equity
Common Stock, $8.50 par value, 120 million shares authorized; 90 million shares outstanding at 2022 and 2021	762		762
Additional paid-in capital	3,100		3,100
Retained earnings	680		602
Total equity	4,542		4,464
Total Liabilities and Equity	$	10,731	$	10,774

See Notes to Condensed Consolidated Financial Statements

31

FINANCIAL STATEMENTS

DUKE ENERGY OHIO, INC.

Condensed Consolidated Statements of Cash Flows

(Unaudited)

	Three Months Ended
	March 31,
(in millions)	2022		2021
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$	77	$	91
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	81		75
Equity component of AFUDC	(3)		(2)
Deferred income taxes	(51)		12
Provision for rate refunds	5		—
(Increase) decrease in
Receivables	(5)		—
Receivables from affiliated companies	15		5
Inventory	2		2
Other current assets	48		(5)
Increase (decrease) in
Accounts payable	88		8
Accounts payable to affiliated companies	—		(12)
Taxes accrued	(56)		(55)
Other current liabilities	(89)		(8)
Other assets	(17)		(16)
Other liabilities	74		1
Net cash provided by operating activities	169		96
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(210)		(220)
Notes receivable from affiliated companies	29		37
Other	(6)		(10)
Net cash used in investing activities	(187)		(193)
CASH FLOWS FROM FINANCING ACTIVITIES
Notes payable to affiliated companies	21		101
Other	(1)		—
Net cash provided by financing activities	20		101
Net increase in cash and cash equivalents	2		4
Cash and cash equivalents at beginning of period	13		14
Cash and cash equivalents at end of period	$	15	$	18
Supplemental Disclosures:
Significant non-cash transactions:
Accrued capital expenditures	$	82	$	84

See Notes to Condensed Consolidated Financial Statements

32

FINANCIAL STATEMENTS

DUKE ENERGY OHIO, INC.

Condensed Consolidated Statements of Changes in Equity

(Unaudited)

	Three Months Ended March 31, 2021 and 2022
			Additional
	Common		Paid-in		Retained		Total
(in millions)	Stock		Capital		Earnings		Equity
Balance at December 31, 2020	$	762	$	2,776	$	397	$	3,935
Net income	—		—		91		91
Balance at March 31, 2021	$	762	$	2,776	$	488	$	4,026
Balance at December 31, 2021	$	762	$	3,100	$	602	$	4,464
Net income	—		—		77		77
Other	—		—		1		1
Balance at March 31, 2022	$	762	$	3,100	$	680	$	4,542

See Notes to Condensed Consolidated Financial Statements

33

FINANCIAL STATEMENTS

DUKE ENERGY INDIANA, LLC

Condensed Consolidated Statements of Operations and Comprehensive Income

(Unaudited)

	Three Months Ended
	March 31,
(in millions)	2022		2021
Operating Revenues	$	822	$	745
Operating Expenses
Fuel used in electric generation and purchased power	319		217
Operation, maintenance and other	192		178
Depreciation and amortization	156		152
Property and other taxes	25		21
Impairment of assets and other charges	211		—
Total operating expenses	903		568
Operating (Loss) Income	(81)		177
Other Income and Expenses, net	10		9
Interest Expense	45		50
(Loss) Income Before Income Taxes	(116)		136
Income Tax (Benefit) Expense	(37)		24
Net (Loss) Income and Comprehensive (Loss) Income	$	(79)	$	112

See Notes to Condensed Consolidated Financial Statements

34

FINANCIAL STATEMENTS

DUKE ENERGY INDIANA, LLC

Condensed Consolidated Balance Sheets

(Unaudited)

(in millions)	March 31, 2022		December 31, 2021
ASSETS
Current Assets
Cash and cash equivalents	$	19	$	6
Receivables (net of allowance for doubtful accounts of $3 at 2022 and 2021)	83		100
Receivables from affiliated companies	69		98
Notes receivable from affiliated companies	20		134
Inventory	430		418
Regulatory assets	301		277
Other	72		68
Total current assets	994		1,101
Property, Plant and Equipment
Cost	17,494		17,343
Accumulated depreciation and amortization	(5,693)		(5,583)
Net property, plant and equipment	11,801		11,760
Other Noncurrent Assets
Regulatory assets	1,077		1,278
Operating lease right-of-use assets, net	52		53
Other	295		296
Total other noncurrent assets	1,424		1,627
Total Assets	$	14,219	$	14,488
LIABILITIES AND EQUITY
Current Liabilities
Accounts payable	$	268	$	282
Accounts payable to affiliated companies	187		221
Taxes accrued	131		73
Interest accrued	56		49
Current maturities of long-term debt	31		84
Asset retirement obligations	115		110
Regulatory liabilities	140		127
Other	108		105
Total current liabilities	1,036		1,051
Long-Term Debt	4,089		4,089
Long-Term Debt Payable to Affiliated Companies	150		150
Other Noncurrent Liabilities
Deferred income taxes	1,234		1,303
Asset retirement obligations	861		877
Regulatory liabilities	1,557		1,565
Operating lease liabilities	49		50
Accrued pension and other post-retirement benefit costs	168		167
Investment tax credits	177		177
Other	74		44
Total other noncurrent liabilities	4,120		4,183
Commitments and Contingencies
Equity
Member's Equity	4,824		5,015
Total Liabilities and Equity	$	14,219	$	14,488

See Notes to Condensed Consolidated Financial Statements

35

FINANCIAL STATEMENTS

DUKE ENERGY INDIANA, LLC

Condensed Consolidated Statements of Cash Flows

(Unaudited)

	Three Months Ended
	March 31,
(in millions)	2022		2021
CASH FLOWS FROM OPERATING ACTIVITIES
Net (loss) income	$	(79)	$	112
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and accretion	157		153
Equity component of AFUDC	(7)		(5)
Impairment of assets and other charges	211		—
Deferred income taxes	(81)		(12)
Payments for asset retirement obligations	(15)		(10)
(Increase) decrease in
Net realized and unrealized mark-to-market and hedging transactions	—		1
Receivables	4		(9)
Receivables from affiliated companies	12		—
Inventory	(12)		38
Other current assets	(22)		(23)
Increase (decrease) in
Accounts payable	19		1
Accounts payable to affiliated companies	(22)		(16)
Taxes accrued	74		71
Other current liabilities	14		20
Other assets	(10)		3
Other liabilities	50		12
Net cash provided by operating activities	293		336
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(212)		(186)
Purchases of debt and equity securities	(16)		(5)
Proceeds from sales and maturities of debt and equity securities	13		4
Notes receivable from affiliated companies	131		(1)
Other	(17)		(7)
Net cash used in investing activities	(101)		(195)
CASH FLOWS FROM FINANCING ACTIVITIES
Payments for the redemption of long-term debt	(53)		—
Notes payable to affiliated companies	—		(131)
Distributions to parent	(125)		—
Other	(1)		—
Net cash used in financing activities	(179)		(131)
Net increase in cash and cash equivalents	13		10
Cash and cash equivalents at beginning of period	6		7
Cash and cash equivalents at end of period	$	19	$	17
Supplemental Disclosures:
Significant non-cash transactions:
Accrued capital expenditures	$	82	$	74

See Notes to Condensed Consolidated Financial Statements

36

FINANCIAL STATEMENTS

DUKE ENERGY INDIANA, LLC

Condensed Consolidated Statements of Changes in Equity

(Unaudited)

	Three Months Ended
	March 31, 2021 and 2022
(in millions)	Member's Equity
Balance at December 31, 2020	$	4,783
Net income	112
Other	1
Balance at March 31, 2021	$	4,896
Balance at December 31, 2021	$	5,015
Net loss	(79)
Distributions to parent	(113)
Other	1
Balance at March 31, 2022	$	4,824

See Notes to Condensed Consolidated Financial Statements

37

FINANCIAL STATEMENTS

PIEDMONT NATURAL GAS COMPANY, INC.

Condensed Consolidated Statements of Operations and Comprehensive Income

(Unaudited)

	Three Months Ended
	March 31,
(in millions)	2022		2021
Operating Revenues	$	805	$	606
Operating Expenses
Cost of natural gas	374		225
Operation, maintenance and other	95		78
Depreciation and amortization	54		48
Property and other taxes	16		14
Total operating expenses	539		365
Operating Income	266		241
Other Income and Expenses, net	13		17
Interest Expense	32		29
Income Before Income Taxes	247		229
Income Tax Expense	33		26
Net Income and Comprehensive Income	$	214	$	203

See Notes to Condensed Consolidated Financial Statements

38

FINANCIAL STATEMENTS

PIEDMONT NATURAL GAS COMPANY, INC.

Condensed Consolidated Balance Sheets

(Unaudited)

(in millions)	March 31, 2022		December 31, 2021
ASSETS
Current Assets
Receivables (net of allowance for doubtful accounts of $17 at 2022 and $15 at 2021)	$	303	$	318
Receivables from affiliated companies	13		11
Inventory	51		109
Regulatory assets	133		141
Other	16		9
Total current assets	516		588
Property, Plant and Equipment
Cost	10,110		9,918
Accumulated depreciation and amortization	(1,952)		(1,899)
Facilities to be retired, net	10		11
Net property, plant and equipment	8,168		8,030
Other Noncurrent Assets
Goodwill	49		49
Regulatory assets	349		316
Operating lease right-of-use assets, net	15		16
Investments in equity method unconsolidated affiliates	97		95
Other	307		288
Total other noncurrent assets	817		764
Total Assets	$	9,501	$	9,382
LIABILITIES AND EQUITY
Current Liabilities
Accounts payable	$	170	$	196
Accounts payable to affiliated companies	52		40
Notes payable to affiliated companies	360		518
Taxes accrued	79		63
Interest accrued	35		37
Regulatory liabilities	98		56
Other	73		81
Total current liabilities	867		991
Long-Term Debt	2,969		2,968
Other Noncurrent Liabilities
Deferred income taxes	831		815
Asset retirement obligations	22		22
Regulatory liabilities	1,041		1,058
Operating lease liabilities	13		14
Accrued pension and other post-retirement benefit costs	7		7
Other	188		158
Total other noncurrent liabilities	2,102		2,074
Commitments and Contingencies
Equity
Common stock, no par value: 100 shares authorized and outstanding at 2022 and 2021	1,635		1,635
Retained earnings	1,928		1,714
Total equity	3,563		3,349
Total Liabilities and Equity	$	9,501	$	9,382

See Notes to Condensed Consolidated Financial Statements

39

FINANCIAL STATEMENTS

PIEDMONT NATURAL GAS COMPANY, INC.

Condensed Consolidated Statements of Cash Flows

(Unaudited)

	Three Months Ended
	March 31,
(in millions)	2022		2021
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$	214	$	203
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	55		48
Equity component of AFUDC	(1)		(6)
Deferred income taxes	(11)		(12)
Equity in earnings from unconsolidated affiliates	(2)		(2)
Provision for rate refunds	(2)		—
(Increase) decrease in
Receivables	15		(8)
Receivables from affiliated companies	(2)		—
Inventory	58		31
Other current assets	7		66
Increase (decrease) in
Accounts payable	(16)		(63)
Accounts payable to affiliated companies	12		(21)
Taxes accrued	16		45
Other current liabilities	36		(16)
Other assets	(13)		2
Other liabilities	—		(2)
Net cash provided by operating activities	366		265
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(199)		(200)
Notes receivable from affiliated companies	—		(198)
Other	(8)		(8)
Net cash used in investing activities	(207)		(406)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from the issuance of long-term debt	—		347
Notes payable to affiliated companies	(158)		(530)
Capital contributions from parent	—		325
Other	(1)		—
Net cash (used in) provided by financing activities	(159)		142
Net increase in cash and cash equivalents	—		1
Cash and cash equivalents at beginning of period	—		—
Cash and cash equivalents at end of period	$	—	$	1
Supplemental Disclosures:
Significant non-cash transactions:
Accrued capital expenditures	$	87	$	106

See Notes to Condensed Consolidated Financial Statements

40

FINANCIAL STATEMENTS

PIEDMONT NATURAL GAS COMPANY, INC.

Condensed Consolidated Statements of Changes in Equity

(Unaudited)

	Three Months Ended March 31, 2021 and 2022
	Common		Retained		Total
(in millions)	Stock		Earnings		Equity
Balance at December 31, 2020	$	1,310	$	1,405	$	2,715
Net income	—		203		203
Contribution from parent	325		—		325
Balance at March 31, 2021	$	1,635	$	1,608	$	3,243
Balance at December 31, 2021	$	1,635	$	1,714	$	3,349
Net income	—		214		214
Balance at March 31, 2022	$	1,635	$	1,928	$	3,563

See Notes to Condensed Consolidated Financial Statements

41

FINANCIAL STATEMENTS ORGANIZATION AND BASIS OF PRESENTATION

Index to Combined Notes to Condensed Consolidated Financial Statements

The unaudited notes to the Condensed Consolidated Financial Statements that follow are a combined presentation. The following list indicates the registrants to which the footnotes apply.

Applicable Notes

Registrant

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

Duke Energy

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

Duke Energy Carolinas

•

•

•

•

•

•

•

•

•

•

•

•

•

•

Progress Energy

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

Duke Energy Progress

•

•

•

•

•

•

•

•

•

•

•

•

•

•

Duke Energy Florida

•

•

•

•

•

•

•

•

•

•

•

•

•

•

Duke Energy Ohio

•

•

•

•

•

•

•

•

•

•

•

•

•

•

Duke Energy Indiana

•

•

•

•

•

•

•

•

•

•

•

•

•

•

Piedmont

•

•

•

•

•

•

•

•

•

•

•

•

•

Tables within the notes may not sum across due to (i) Progress Energy's consolidation of Duke Energy Progress, Duke Energy Florida and other subsidiaries that are not registrants and (ii) subsidiaries that are not registrants but included in the consolidated Duke Energy balances.

1. ORGANIZATION AND BASIS OF PRESENTATION

BASIS OF PRESENTATION

These Condensed Consolidated Financial Statements have been prepared in accordance with GAAP for interim financial information and with the instructions to Form 10-Q and Regulation S-X. Accordingly, these Condensed Consolidated Financial Statements do not include all information and notes required by GAAP for annual financial statements and should be read in conjunction with the Consolidated Financial Statements in the Duke Energy Registrants’ combined Annual Report on Form 10-K for the year ended December 31, 2021.

The information in these combined notes relates to each of the Duke Energy Registrants as noted in the Index to Combined Notes to Condensed Consolidated Financial Statements. However, none of the registrants make any representations as to information related solely to Duke Energy or the subsidiaries of Duke Energy other than itself.

These Condensed Consolidated Financial Statements, in the opinion of the respective companies’ management, reflect all normal recurring adjustments necessary to fairly present the financial position and results of operations of each of the Duke Energy Registrants. Amounts reported in Duke Energy’s interim Condensed Consolidated Statements of Operations and each of the Subsidiary Registrants’ interim Condensed Consolidated Statements of Operations and Comprehensive Income are not necessarily indicative of amounts expected for the respective annual periods due to effects of seasonal temperature variations on energy consumption, regulatory rulings, timing of maintenance on electric generating units, changes in mark-to-market valuations, changing commodity prices and other factors.

In preparing financial statements that conform to GAAP, management must make estimates and assumptions that affect the reported amounts of assets and liabilities, the reported amounts of revenues and expenses and the disclosure of contingent assets and liabilities at the date of the financial statements. Actual results could differ from those estimates.

BASIS OF CONSOLIDATION

These Condensed Consolidated Financial Statements include, after eliminating intercompany transactions and balances, the accounts of the Duke Energy Registrants and subsidiaries or VIEs where the respective Duke Energy Registrants have control. See Note 11 for additional information on VIEs. These Condensed Consolidated Financial Statements also reflect the Duke Energy Registrants’ proportionate share of certain jointly owned generation and transmission facilities.

NONCONTROLLING INTEREST

Duke Energy maintains a controlling financial interest in certain less than wholly owned nonregulated subsidiaries. As a result, Duke Energy consolidates these subsidiaries and presents the third-party investors' portion of Duke Energy's net income (loss), net assets and comprehensive income (loss) as noncontrolling interest. Noncontrolling interest is included as a component of equity on the Condensed Consolidated Balance Sheets.

Several operating agreements of Duke Energy's subsidiaries with noncontrolling interest are subject to allocations of earnings, tax attributes and cash flows in accordance with contractual agreements that vary throughout the lives of the subsidiaries. Therefore, Duke Energy and the other investors' (the owners) interests in the subsidiaries are not fixed, and the subsidiaries apply the Hypothetical Liquidation at Book Value (HLBV) method in allocating income or loss and other comprehensive income or loss (all measured on a pretax basis) to the owners. The HLBV method measures the amounts that each owner would hypothetically claim at each balance sheet reporting date, including tax benefits realized by the owners over the IRS recapture period, upon a hypothetical liquidation of the subsidiary at the net book value of its underlying assets. The change in the amount that each owner would hypothetically receive at the reporting date compared to the amount it would have received on the previous reporting date represents the amount of income or loss allocated to each owner for the reporting period.

During September 2021, Duke Energy completed the initial minority interest investment in a portion of Duke Energy Indiana to an affiliate of GIC. GIC's ownership interest in Duke Energy Indiana represents a noncontrolling interest. See Note 2 for additional information on the sale.

Other operating agreements of Duke Energy's subsidiaries with noncontrolling interest allocate profit and loss based on their pro rata shares of the ownership interest in the respective subsidiary. Therefore, Duke Energy allocates net income or loss and other comprehensive income or loss of these subsidiaries to the owners based on their pro rata shares.

42

FINANCIAL STATEMENTS ORGANIZATION AND BASIS OF PRESENTATION

The following table presents allocated losses to noncontrolling interest for the three months ended March 31, 2022, and 2021.

	Three Months Ended March 31,
(in millions)	2022		2021
Noncontrolling Interest Allocation of Income
Allocated losses to noncontrolling tax equity members utilizing the HLBV method	$	24	$	43
Allocated losses to noncontrolling members based on pro rata shares of ownership	13		8
Total Noncontrolling Interest Allocated Losses	$	37	$	51

CASH, CASH EQUIVALENTS AND RESTRICTED CASH

Duke Energy, Duke Energy Carolinas, Progress Energy, Duke Energy Progress and Duke Energy Florida have restricted cash balances related primarily to collateral assets, escrow deposits and VIEs. See Notes 9 and 11 for additional information. Restricted cash amounts are included in Other within Current Assets and Other Noncurrent Assets on the Condensed Consolidated Balance Sheets. The following table presents the components of cash, cash equivalents and restricted cash included in the Condensed Consolidated Balance Sheets.

	March 31, 2022										December 31, 2021
			Duke				Duke		Duke				Duke				Duke		Duke
	Duke		Energy		Progress		Energy		Energy		Duke		Energy		Progress		Energy		Energy
	Energy		Carolinas		Energy		Progress		Florida		Energy		Carolinas		Energy		Progress		Florida
Current Assets
Cash and cash equivalents	$	853	$	4	$	63	$	42	$	13	$	343	$	7	$	70	$	35	$	23
Other	151		4		28		13		13		170		—		39		—		39
Other Noncurrent Assets
Other	16		1		4		4		—		7		1		4		4		—
Total cash, cash equivalents and restricted cash	$	1,020	$	9	$	95	$	59	$	26	$	520	$	8	$	113	$	39	$	62

INVENTORY

Provisions for inventory write-offs were not material at March 31, 2022, and December 31, 2021. The components of inventory are presented in the tables below.

	March 31, 2022
			Duke				Duke		Duke		Duke		Duke
	Duke		Energy		Progress		Energy		Energy		Energy		Energy
(in millions)	Energy		Carolinas		Energy		Progress		Florida		Ohio		Indiana		Piedmont
Materials and supplies	$	2,455	$	810	$	1,089	$	744	$	345	$	89	$	320	$	14
Coal	469		196		149		93		56		16		108		—
Natural gas, oil and other fuel	247		34		165		103		62		9		2		37
Total inventory	$	3,171	$	1,040	$	1,403	$	940	$	463	$	114	$	430	$	51

	December 31, 2021
			Duke				Duke		Duke		Duke		Duke
	Duke		Energy		Progress		Energy		Energy		Energy		Energy
(in millions)	Energy		Carolinas		Energy		Progress		Florida		Ohio		Indiana		Piedmont
Materials and supplies	$	2,397	$	793	$	1,067	$	729	$	338	$	80	$	311	$	14
Coal	486		195		167		94		73		19		105		—
Natural gas, oil and other fuel	316		38		164		98		66		17		2		95
Total inventory	$	3,199	$	1,026	$	1,398	$	921	$	477	$	116	$	418	$	109

NEW ACCOUNTING STANDARDS

No new accounting standards were adopted by the Duke Energy Registrants in 2022.

2. BUSINESS SEGMENTS

Duke Energy

Duke Energy's segment structure includes the following segments: Electric Utilities and Infrastructure, Gas Utilities and Infrastructure and Commercial Renewables.

43

FINANCIAL STATEMENTS BUSINESS SEGMENTS

The Electric Utilities and Infrastructure segment primarily includes Duke Energy's regulated electric utilities in the Carolinas, Florida and the Midwest. On January 28, 2021, Duke Energy executed an agreement providing for an investment by an affiliate of GIC in Duke Energy Indiana in exchange for a 19.9% minority interest issued by Duke Energy Indiana Holdco, LLC, the holding company for Duke Energy Indiana. The transaction will be completed following two closings for an aggregate purchase price of approximately $2 billion. The first closing, which occurred on September 8, 2021, resulted in Duke Energy Indiana Holdco, LLC issuing 11.05% of its membership interests in exchange for approximately $1,025 million or 50% of the purchase price. Duke Energy retained indirect control of these assets, and, therefore, no gain or loss was recognized on the Condensed Consolidated Statements of Operations. Duke Energy has the discretion to determine the timing of the second closing, but it will occur no later than January 2023. At the second closing, Duke Energy will issue and sell additional membership interests such that GIC will own 19.9% of the membership interests for the remaining 50% of the purchase price.

The Gas Utilities and Infrastructure segment includes Piedmont, Duke Energy's natural gas local distribution companies in Ohio and Kentucky and Duke Energy's natural gas storage, midstream pipeline and renewable natural gas investments.

The Commercial Renewables segment is primarily comprised of nonregulated utility-scale wind and solar generation assets located throughout the U.S. Duke Energy continues to monitor recoverability of its renewable merchant plants located in the ERCOT West market and in the PJM West market due to fluctuating market pricing and long-term forecasted energy prices. The assets were not impaired as of March 31, 2022, because the carrying value of approximately $200 million continues to approximate the aggregate estimated future undiscounted cash flows. Duke Energy has a 51% ownership interest in these assets. A continued decline in energy market pricing or other factors unfavorably impacting the economics would likely result in a future impairment.

The remainder of Duke Energy’s operations is presented as Other, which is primarily comprised of interest expense on holding company debt, unallocated corporate costs, Duke Energy’s wholly owned captive insurance company, Bison, and Duke Energy's ownership interest in National Methanol Company.

Business segment information is presented in the following tables. Segment assets presented exclude intercompany assets.

	Three Months Ended March 31, 2022
	Electric		Gas				Total
	Utilities and		Utilities and		Commercial		Reportable
(in millions)	Infrastructure		Infrastructure		Renewables		Segments		Other		Eliminations		Total
Unaffiliated revenues	$	5,995	$	1,009	$	121	$	7,125	$	7	$	—	$	7,132
Intersegment revenues	7		23		—		30		23		(53)		—
Total revenues	$	6,002	$	1,032	$	121	$	7,155	$	30	$	(53)	$	7,132
Segment income (loss)(a)	$	723	$	254	$	11	$	988	$	(170)	$	—	$	818
Less: Noncontrolling interests													37
Add: Preferred stock dividend													39
Net Income													$	820
Segment assets	$	144,790	$	15,170	$	7,021	$	166,981	$	4,251	$	(12)	$	171,220

	Three Months Ended March 31, 2021
	Electric		Gas				Total
	Utilities and		Utilities and		Commercial		Reportable
(in millions)	Infrastructure		Infrastructure		Renewables		Segments		Other		Eliminations		Total
Unaffiliated revenues	$	5,273	$	752	$	119	$	6,144	$	6	$	—	$	6,150
Intersegment revenues	8		23		—		31		20		(51)		—
Total revenues	$	5,281	$	775	$	119	$	6,175	$	26	$	(51)	$	6,150
Segment income (loss)(b)	$	820	$	245	$	27	$	1,092	$	(139)	$	—	$	953
Less: Noncontrolling interests													51
Add: Preferred stock dividend													39
Net Income													$	941

(a)Electric Utilities and Infrastructure includes $211 million recorded within Impairment of assets and other charges, $46 million within Operating revenues and $22 million within Noncontrolling Interests related to the Duke Energy Supreme Court ruling on the Condensed Consolidated Statements of Operations. See Note 3 for additional information.

(b)Commercial Renewables includes a $35 million loss related to Texas Storm Uri, of which $8 million is recorded within Nonregulated electric and other revenues, $2 million within Operation, maintenance and other, $29 million within Equity in earnings (losses) of unconsolidated affiliates and $12 million within Net Loss Attributable to Noncontrolling Interests on the Condensed Consolidated Statements of Operations. See Note 4 for additional information. Gas Utilities and Infrastructure includes $6 million, recorded within Equity in earnings (losses) of unconsolidated affiliates on the Condensed Consolidated Statements of Operations, related to gas pipeline investments.

44

FINANCIAL STATEMENTS BUSINESS SEGMENTS

Duke Energy Ohio

Duke Energy Ohio has two reportable segments, Electric Utilities and Infrastructure and Gas Utilities and Infrastructure. The remainder of Duke Energy Ohio's operations is presented as Other.

	Three Months Ended March 31, 2022
	Electric		Gas		Total
	Utilities and		Utilities and		Reportable
(in millions)	Infrastructure		Infrastructure		Segments		Other		Eliminations		Total
Total revenues	$	412	$	226	$	638	$	—	$	—	$	638
Segment income/Net (loss) income	$	41	$	38	$	79	$	(2)	$	—	$	77
Segment assets	$	7,101	$	3,784	$	10,885	$	14	$	(168)	$	10,731

	Three Months Ended March 31, 2021
	Electric		Gas		Total
	Utilities and		Utilities and		Reportable
(in millions)	Infrastructure		Infrastructure		Segments		Other		Total
Total revenues	$	363	$	169	$	532	$	—	$	532
Segment income/Net (loss) income	$	50	$	43	$	93	$	(2)	$	91

3. REGULATORY MATTERS

RATE-RELATED INFORMATION

The NCUC, PSCSC, FPSC, IURC, PUCO, TPUC and KPSC approve rates for retail electric and natural gas services within their states. The FERC approves rates for electric sales to wholesale customers served under cost-based rates (excluding Ohio and Indiana), as well as sales of transmission service. The FERC also regulates certification and siting of new interstate natural gas pipeline projects.

Duke Energy Carolinas and Duke Energy Progress

HB 951

The NCUC is required by North Carolina House Bill 951 (HB 951) to adopt an initial Carbon Plan on or before December 31, 2022. The NCUC has directed Duke Energy Carolinas and Duke Energy Progress to file a proposed Carbon Plan on or before May 16, 2022. Duke Energy Carolinas and Duke Energy Progress cannot predict the outcome of this matter.

On February 10, 2022, the NCUC adopted rules to govern the application and review process for the PBR authorized under HB 951. On April 5, 2022, the NCUC adopted rules to govern the securitization of 50% of the North Carolina retail portion of the remaining net book value of retiring coal plants pursuant to HB 951. The rules are constructive and consistent with the policy objectives of HB 951.

Duke Energy Carolinas

Oconee Nuclear Station Subsequent License Renewal

On June 7, 2021, Duke Energy Carolinas filed a subsequent license renewal (SLR) application for the Oconee Nuclear Station (ONS) with the U.S. Nuclear Regulatory Commission (NRC) to renew ONS’s operating license for an additional 20 years. The SLR would extend operations of the facility from 60 to 80 years. The current licenses for units 1 and 2 expire in 2033 and the license for unit 3 expires in 2034. By a Federal Register Notice dated July 28, 2021, the NRC provided a 60-day comment period for persons whose interest may be affected by the issuance of a subsequent renewed license for ONS to file a request for a hearing and a petition for leave to intervene. On September 27, 2021, Beyond Nuclear and Sierra Club (Petitioners) filed a Hearing Request and Petition to Intervene (Hearing Request) and a Petition for Waiver. The Hearing Request proposed three contentions purporting to challenge Duke Energy Carolinas’ environmental report (ER). In general, the proposed contentions claimed that the ER did not consider certain information regarding the environmental aspects of severe accidents caused by a hypothetical failure of the Jocassee Dam, and therefore did not satisfy the National Environmental Policy Act (NEPA) of 1969, as amended, or the NRC’s NEPA-implementing regulations. Duke Energy Carolinas filed its answer to the proposed contentions on October 22, 2021, and the Petitioners filed their reply to Duke Energy Carolinas’ answer on November 5, 2021. On February 11, 2022, the Atomic Safety and Licensing Board (ASLB) issued its decision on the Hearing Request and found that the Petitioners failed to establish that the proposed contentions are litigable. The ASLB also denied the Petitioners' Petition for Waiver and terminated the proceeding.

On February 24, 2022, the NRC issued a decision in the Turkey Point SLR appeal and ruled that the NRC’s license renewal Generic Environmental Impact Statement (GEIS) does not apply to SLR because the GEIS does not address SLR. The decision overturned a 2020 NRC decision that found the GEIS applies to SLR. While Turkey Point is not owned or operated by a Duke Energy Registrant, the NRC’s order applies to all SLR applicants, including ONS. The NRC order also indicated no subsequent renewed licenses will be issued until the NRC staff has completed an adequate NEPA review for each application. On April 5, 2022, the NRC approved a 24-month rulemaking plan that will enable the NRC staff to complete an adequate NEPA review. Although an SLR applicant may wait until the rulemaking is completed, the NRC also noted that an applicant may submit a revised environmental report providing information on environmental impacts during the SLR period prior to the rulemaking being completed. Duke Energy Carolinas is evaluating the two options to determine which is preferable for ONS. Although the NRC’s decision will delay completion of the SLR proceeding, Duke Energy Carolinas does not believe it changes the probability that the ONS subsequent renewed licenses will ultimately be issued, though Duke Energy Carolinas cannot guaranty the outcome of the license application process.

45

FINANCIAL STATEMENTS REGULATORY MATTERS

Duke Energy Carolinas and Duke Energy Progress intend to seek renewal of operating licenses and 20-year license extensions for all of their nuclear stations. New depreciation rates were implemented for all of the nuclear facilities during the second quarter of 2021. Duke Energy Carolinas and Duke Energy Progress cannot predict the outcome of this matter.

Duke Energy Progress

FERC Return on Equity Complaint

On October 16, 2020, North Carolina Electric Membership Corporation (NCEMC) filed a complaint at the FERC against Duke Energy Progress pursuant to Section 206 of the Federal Power Act (FPA), alleging that the 11% stated return on equity (ROE) component in the demand formula rate in the Power Supply and Coordination Agreement between NCEMC and Duke Energy Progress is unjust and unreasonable. Under FPA Section 206, the earliest refund effective date that the FERC can establish is the date of the filing of the complaint. A series of responses and answers were filed at FERC. The complaint proceeding is currently held in abeyance until June 1, 2022, based on representations that the parties have reached an agreement in principle and need additional time to finalize the filing. Duke Energy Progress cannot predict the outcome of this matter.

Duke Energy Florida

2021 Settlement Agreement

On January 14, 2021, Duke Energy Florida filed a Settlement Agreement (the “2021 Settlement”) with the FPSC. The parties to the 2021 Settlement include Duke Energy Florida, the Office of Public Counsel (OPC), the Florida Industrial Power Users Group, White Springs Agricultural Chemicals, Inc. d/b/a PCS Phosphate and NUCOR Steel Florida, Inc. (collectively, the “Parties”).

Pursuant to the 2021 Settlement, the Parties agreed to a base rate stay-out provision that expires year-end 2024; however, Duke Energy Florida is allowed an increase to its base rates of an incremental $67 million in 2022, $49 million in 2023 and $79 million in 2024, subject to adjustment in the event of tax reform during the years 2021, 2022 and 2023. The Parties also agreed to an ROE band of 8.85% to 10.85% with a midpoint of 9.85% based on a capital structure of 53% equity and 47% debt. The ROE band can be increased by 25 basis points if the average 30-year U.S. Treasury rate increases 50 basis points or more over a six-month period in which case the midpoint ROE would rise from 9.85% to 10.10%. Duke Energy Florida will also be able to retain the retail portion of the DOE award of approximately $173 million for spent nuclear fuel, which is expected to be received in 2022, in order to mitigate customer rates over the term of the 2021 Settlement. In return, Duke Energy Florida will be able to recognize the $173 million into earnings from 2022 through 2024.

In addition to these terms, the 2021 Settlement contained provisions related to the accelerated depreciation of Crystal River Units 4-5, the approval of approximately $1 billion in future investments in new cost-effective solar power, the implementation of a new Electric Vehicle Charging Station Program and the deferral and recovery of costs in connection with the implementation of Duke Energy Florida’s Vision Florida program, which explores various emerging non-carbon emitting generation technology, distributed technologies and resiliency projects, among other things. The 2021 Settlement also resolved remaining unrecovered storm costs for Hurricane Michael and Hurricane Dorian.

The FPSC approved the 2021 Settlement on May 4, 2021, issuing an order on June 4, 2021. Revised customer rates became effective January 1, 2022, with subsequent base rate increases effective January 1, 2023, and January 1, 2024.

Clean Energy Connection

On July 1, 2020, Duke Energy Florida petitioned the FPSC for approval of a voluntary solar program. The program consists of 10 new solar generating facilities with combined capacity of approximately 750 MW. The program allows participants to support cost-effective solar development in Florida by paying a subscription fee based on per kilowatt-subscriptions and receiving a credit on their bill based on the actual generation associated with their portion of the solar portfolio. The estimated cost of the 10 new solar generation facilities is approximately $1 billion over the next three years, and this investment will be included in base rates offset by the revenue from the subscription fees. The credits will be included for recovery in the fuel cost recovery clause. The FPSC approved the program in January 2021.

On February 24, 2021, the League of United Latin American Citizens (LULAC) filed a notice of appeal of the FPSC’s order approving the Clean Energy Connection to the Supreme Court of Florida. LULAC's initial brief was filed on May 26, 2021, and Appellees' response briefs were filed on July 26, 2021. LULAC's reply brief was filed on September 24, 2021, and its request for oral argument was filed on September 28, 2021. The Supreme Court of Florida heard the oral argument on February 9, 2022. The FPSC approval order remains in effect pending the outcome of the appeal. Duke Energy Florida cannot predict the outcome of this matter.

Storm Protection Plan

On April 11, 2022, Duke Energy Florida filed a Storm Protection Plan for approval with the FPSC. The plan, which covers investments for the 2023-2032 time frame, reflects approximately $7 billion of capital investment in transmission and distribution meant to strengthen its infrastructure, reduce outage times associated with extreme weather events, reduce restoration costs and improve overall service reliability. The FPSC has scheduled a hearing to begin on August 2, 2022. Duke Energy Florida cannot predict the outcome of this matter.

Duke Energy Ohio

Duke Energy Ohio Electric Base Rate Case

Duke Energy Ohio filed with the PUCO an electric distribution base rate case application on October 1, 2021, with supporting testimony filed on October 15, 2021, requesting an increase in electric distribution base rates of approximately $55 million and an ROE of 10.3%. This is an approximate 3.3% average increase in the customer's total bill across all customer classes. The drivers for this case are capital invested since Duke Energy Ohio's last electric distribution base rate case in 2017. Duke Energy Ohio is also seeking to adjust the caps on its Distribution Capital Investment Rider (DCI Rider). Duke Energy Ohio anticipates the PUCO will rule on the request in 2022. Duke Energy Ohio cannot predict the outcome of this matter.

46

FINANCIAL STATEMENTS REGULATORY MATTERS

Energy Efficiency Cost Recovery

In response to changes in Ohio law that eliminated Ohio's energy efficiency mandates, the PUCO issued an order on February 26, 2020, directing utilities to wind down their demand-side management programs by September 30, 2020, and to terminate the programs by December 31, 2020. Duke Energy Ohio took the following actions:

•On March 27, 2020, Duke Energy Ohio filed an application for rehearing seeking clarification on the final true up and reconciliation process after 2020. On November 18, 2020, the PUCO issued an order replacing the cost cap previously imposed upon Duke Energy Ohio with a cap on shared savings recovery. On December 18, 2020, Duke Energy Ohio filed an additional application for rehearing challenging, among other things, the imposition of the cap on shared savings. On January 13, 2021, the application for rehearing was granted for further consideration.

•On October 9, 2020, Duke Energy Ohio filed an application to implement a voluntary energy efficiency program portfolio to commence on January 1, 2021. The application proposed a mechanism for recovery of program costs and a benefit associated with avoided transmission and distribution costs. The application remains under review.

•On November 18, 2020, the PUCO issued an order directing all utilities to set their energy efficiency riders to zero effective January 1, 2021, and to file a separate application for final reconciliation of all energy efficiency costs prior to December 31, 2020. Effective January 1, 2021, Duke Energy Ohio suspended its energy efficiency programs.

•On June 14, 2021, the PUCO issued an entry for each utility to file by July 15, 2021, a proposal to reestablish low-income programs through December 31, 2021. Duke Energy Ohio filed its application on July 14, 2021.

•On February 23, 2022, the PUCO issued its Fifth Entry on Rehearing that 1) affirmed its reduction in Duke Energy Ohio's shared savings cap; 2) denied rehearing/clarification regarding lost distribution revenues and shared savings recovery for periods after December 31, 2020; and 3) directed Duke Energy Ohio to submit an updated application with exhibits.

•On March 25, 2022, Duke Energy Ohio filed its Amended Application consistent with the PUCO's order.

Duke Energy Ohio cannot predict the outcome of this matter.

Natural Gas Pipeline Extension

Duke Energy Ohio installed a new natural gas pipeline (the Central Corridor Project) in its Ohio service territory to increase system reliability and enable the retirement of older infrastructure. Construction of the pipeline extension was completed and placed in service on March 14, 2022. Duke Energy Ohio expects the final cost for the pipeline development and construction activities to be approximately $185 million (excluding overheads and AFUDC).

MGP Cost Recovery

In an order issued in 2013, the PUCO approved Duke Energy Ohio's deferral and recovery of costs related to environmental remediation at two sites (East End and West End) that housed former MGP operations. Duke Energy Ohio made annual applications with the PUCO to recover its incremental remediation costs consistent with the PUCO’s directive in Duke Energy Ohio’s 2012 natural gas base rate case. The Staff of the PUCO (Staff) issued reports recommending a disallowance of MGP remediation costs incurred that the Staff believes are not eligible for recovery. The Staff interprets the PUCO’s 2013 order granting Duke Energy Ohio recovery of MGP remediation as limiting the recovery to work directly on the East End and West End sites. Duke Energy Ohio filed reply comments objecting to the Staff’s recommendations and explaining, among other things, the obligation Duke Energy Ohio has under Ohio law to remediate all areas impacted by the former MGPs and not just physical property that housed the former plants and equipment. Additionally, the Staff recommended that any discussion pertaining to Duke Energy Ohio's recovery of ongoing MGP costs should be directly tied to or netted against insurance proceeds collected by Duke Energy Ohio. An evidentiary hearing concluded on November 21, 2019. Initial briefs were filed on January 17, 2020, and reply briefs were filed on February 14, 2020.

The 2013 PUCO order also contained conditional deadlines for completing the MGP environmental remediation and the deferral of related remediation costs. Subsequent to the order, the deadline was extended to December 31, 2019. On May 10, 2019, Duke Energy Ohio filed an application requesting a continuation of its existing deferral authority for MGP remediation that must occur after December 31, 2019. On July 12, 2019, the Staff recommended the commission deny the deferral authority request. On September 13, 2019, intervenor comments were filed opposing Duke Energy Ohio's request for continuation of existing deferral authority and on October 2, 2019, Duke Energy Ohio filed reply comments.

A Stipulation and Recommendation was filed jointly by Duke Energy Ohio, the Staff, the Office of the Ohio Consumers' Counsel and the Ohio Energy Group on August 31, 2021, which was approved without modification by the PUCO on April 20, 2022. The Stipulation and Recommendation resolved all open issues regarding MGP remediation costs incurred between 2013 and 2019, Duke Energy Ohio’s request for additional deferral authority beyond 2019 and the pending issues related to the Tax Act described below as it related to Duke Energy Ohio’s natural gas operations. As a result of the approval of the Stipulation and Recommendation, Duke Energy Ohio recognized pretax charges of approximately $15 million to Operating revenues, regulated natural gas and $58 million to Operation, maintenance and other and a tax benefit of $72 million to Income Tax (Benefit) Expense in the Condensed Consolidated Statements of Operations for the three months ended March 31, 2022. The Stipulation and Recommendation further acknowledged Duke Energy Ohio’s ability to file a request for additional deferral authority in the future related to environmental remediation of any MGP impacts in the Ohio River if necessary, subject to specific conditions. Intervenors have 30 days to file for rehearing. Duke Energy Ohio cannot predict the outcome of this matter.

47

FINANCIAL STATEMENTS REGULATORY MATTERS

Tax Act – Ohio

On December 21, 2018, Duke Energy Ohio filed an application to change its base rate tariffs and establish a new rider to implement the benefits of the Tax Act for natural gas customers. Duke Energy Ohio requested commission approval to implement the tariff changes and rider effective April 1, 2019. The new rider would flow through to customers the benefit of the reduction in the statutory federal tax rate from 35% to 21% since January 1, 2018, all future benefits of the lower tax rates and a full refund of deferred income taxes collected at the higher tax rates in prior years. Deferred income taxes subject to normalization rules would be refunded consistent with federal law and deferred income taxes not subject to normalization rules will be refunded over a 10-year period. The PUCO established a procedural schedule and testimony was filed on July 31, 2019. An evidentiary hearing occurred on August 7, 2019. The Stipulation and Recommendation filed on August 31, 2021, and approved on April 20, 2022, disclosed in the MGP Cost Recovery matter above, resolves the outstanding issues in this proceeding by providing customers a one-time bill credit for the reduction in the statutory federal tax rate from 35% to 21% since January 1, 2018, through June 1, 2022, and reducing base rates going forward. Deferred income taxes subject to normalization rules will be refunded consistent with federal law through a new rider. Deferred income taxes not subject to normalization rules were written off. Intervenors have 30 days to file for rehearing. Duke Energy Ohio cannot predict the outcome of this matter.

Midwest Propane Caverns

Duke Energy Ohio used propane stored in caverns to meet peak demand during winter. Because the Central Corridor Project is complete and placed in service, the propane peaking facilities will no longer be necessary and have been retired. On October 7, 2021, Duke Energy Ohio requested deferral treatment of the property, plant and equipment as well as costs related to propane inventory and decommissioning costs. On January 6, 2022, the Staff issued a report recommending deferral authority for costs related to propane inventory and decommissioning costs, but not for the net book value of the remaining plant assets. As a result of the Staff's report, Duke Energy Ohio recorded a $19 million charge to Impairment of assets and other charges on the Consolidated Statements of Operations and Comprehensive Income in the fourth quarter of 2021. A Stipulation and Recommendation was filed jointly by Duke Energy Ohio and the Staff on April 27, 2022, recommending, among other things, approval of deferral treatment of a portion of the net book value of the property, plant and equipment prior to the 2021 impairment at the time of the next natural gas base rate case, excluding operations and maintenance savings, decommissioning costs not to exceed $7 million and costs related to propane inventory. The Stipulation and Recommendation states that Duke Energy Ohio will seek recovery of the deferral through its next gas base rate case proceeding with a proposed amortization period of at least ten years and include an independent engineering study analyzing the necessity and prudency of the incremental investments made at the facilities since March 31, 2012. Duke Energy Ohio will not seek a return on the deferred amounts. Duke Energy Ohio cannot predict the outcome of this matter.

Duke Energy Indiana

2019 Indiana Rate Case

On July 2, 2019, Duke Energy Indiana filed a general rate case with the IURC for a rate increase for retail customers of approximately $395 million. The rebuttal case, filed on December 4, 2019, updated the requested revenue requirement to result in a 15.6% or $396 million average retail rate increase, including the impacts of the Utility Receipts Tax. Hearings concluded on February 7, 2020. On June 29, 2020, the IURC issued an order in the rate case approving a revenue increase of $146 million before certain adjustments and ratemaking refinements. The order approved Duke Energy Indiana’s requested forecasted rate base of $10.2 billion as of December 31, 2020, including the Edwardsport Integrated Gasification Combined Cycle (IGCC) Plant. The IURC reduced Duke Energy Indiana’s request by slightly more than $200 million, when accounting for the utility receipts tax and other adjustments. Approximately 50% of the reduction was due to a prospective change in depreciation and use of regulatory asset for the end-of-life inventory at retired generating plants, approximately 20% is due to the approved ROE of 9.7% versus the requested ROE of 10.4% and approximately 20% was related to miscellaneous earnings neutral adjustments. Step one rates were estimated to be approximately 75% of the total and became effective on July 30, 2020. Step two rates are estimated to be the remaining 25% of the total rate increase. Step two rates were approved on July 28, 2021, and implemented in August 2021. Step two rates are based on an ROE of 9.7% and actual December 31, 2020 capital structure with a 54% equity component. Step two rates were reconciled to January 1, 2021.

Several groups appealed the IURC order to the Indiana Court of Appeals. Appellate briefs were filed on October 14, 2020, focusing on three issues: wholesale sales allocations, coal ash basin cost recovery and the Edwardsport IGCC operating and maintenance expense level approved. The appeal was fully briefed in January 2021 and an oral argument was held on April 8, 2021. The Indiana Court of Appeals affirmed the IURC decision on May 13, 2021. The Indiana Office of Utility Consumer Counselor (OUCC) and the Duke Industrial Group filed a joint petition to transfer the rate case appeal to the Indiana Supreme Court on June 28, 2021. Response briefs were filed July 19, 2021. The Indiana Supreme Court issued its opinion on March 10, 2022, finding that the IURC erred in allowing Duke Energy Indiana to recover coal ash costs incurred before the IURC’s rate case order in June 2020. The Indiana Supreme Court found that allowing Duke Energy Indiana to recover coal ash costs incurred between rate cases that exceeded the amount built into base rates violated the prohibition against retroactive ratemaking. The IURC’s order has been remanded to the IURC for additional proceedings consistent with the Indiana Supreme Court’s opinion. As a result of the court's opinion, Duke Energy Indiana recognized pretax charges of approximately $211 million to Impairment of assets and other charges and $46 million to Operating revenues in the Condensed Consolidated Statements of Operations for the three months ended March 31, 2022. Duke Energy Indiana filed a request for rehearing with the Supreme Court on April 11, 2022. Until the Indiana Supreme Court acts on the petition for rehearing, the IURC may not act on the Supreme Court's initial remedy. Duke Energy Indiana cannot predict the outcome of this matter.

2020 Indiana Coal Ash Recovery Case

In Duke Energy Indiana’s 2019 rate case, the IURC also opened a subdocket for post-2018 coal ash related expenditures. Duke Energy Indiana filed testimony on April 15, 2020, in the coal ash subdocket requesting recovery for the post-2018 coal ash basin closure costs for plans that have been approved by the Indiana Department of Environmental Management (IDEM) as well as continuing deferral, with carrying costs, on the balance. An evidentiary hearing was held on September 14, 2020. Briefing was completed by mid-September 2021. On November 3, 2021, the IURC issued an order allowing recovery for post-2018 coal ash basin closure costs for the plans that have been approved by IDEM, as well as continuing deferral, with carrying costs, on the balance. The OUCC filed a notice of appeal to the Indiana Court of Appeals on December 3, 2021. Duke Energy Indiana cannot predict the outcome of this matter.

48

FINANCIAL STATEMENTS REGULATORY MATTERS

Piedmont

2022 South Carolina Rate Case

On April 1, 2022, Piedmont filed an application with the PSCSC for a rate increase for retail customers of approximately $7 million, which represents an approximate 3.4% increase in retail revenues. The rate increase is driven by customer growth and infrastructure upgrade investments (plant additions) since Piedmont’s last proceeding in 2021 under South Carolina’s Rate Stabilization Act. In addition, Piedmont agreed with the South Carolina Office of Regulatory Staff in 2019 to file a general rate case no later than April 1, 2022, to conduct a more comprehensive review of rates including the allocation of costs to residential, commercial and industrial customers. The PSCSC has scheduled an evidentiary hearing for the week of August 15, 2022. Piedmont cannot predict the outcome of this matter.

OTHER REGULATORY MATTERS

Potential Coal Plant Retirements

The Subsidiary Registrants periodically file IRPs with their state regulatory commissions. The IRPs provide a view of forecasted energy needs over a long term (10 to 20 years) and options being considered to meet those needs. IRPs filed by the Subsidiary Registrants included planning assumptions to potentially retire certain coal-fired generating facilities in North Carolina and Indiana earlier than their current estimated useful lives. Duke Energy continues to evaluate the potential need to retire these coal-fired generating facilities earlier than the current estimated useful lives and plans to seek regulatory recovery for amounts that would not be otherwise recovered when any of these assets are retired.

The table below contains the net carrying value of generating facilities planned for retirement or included in recent IRPs as evaluated for potential retirement. Dollar amounts in the table below are included in Net property, plant and equipment on the Condensed Consolidated Balance Sheets as of March 31, 2022, and exclude capitalized asset retirement costs.

		Remaining Net
	Capacity	Book Value
	(in MW)	(in millions)
Duke Energy Carolinas
Allen Steam Station Units 1(a)	167	$	12
Allen Steam Station Units 5(b)	259	265
Cliffside Unit 5(b)	546	358
Duke Energy Progress
Mayo Unit 1(b)	713	621
Roxboro Units 3-4(b)	1,409	450
Duke Energy Florida
Crystal River Units 4-5(c)	1,442	1,636
Duke Energy Indiana
Gibson Units 1-5(d)	2,845	2,076
Cayuga Units 1-2(d)	1,005	676
Total Duke Energy	8,386	$	6,094

(a)As part of the 2015 resolution of a lawsuit involving alleged New Source Review violations, Duke Energy Carolinas must retire Allen Steam Station Unit 1 by December 31, 2024. The long-term energy options considered in the IRP could result in retirement of this unit earlier than its current estimated useful live.

(b)These units were included in the IRP filed by Duke Energy Carolinas and Duke Energy Progress in North Carolina and South Carolina on September 1, 2020. The long-term energy options considered in the IRP could result in retirement of these units earlier than their current estimated useful lives.

(c)On January 14, 2021, Duke Energy Florida filed the 2021 Settlement agreement with the FPSC, which proposed depreciation rates reflecting retirement dates for Duke Energy Florida's last two coal-fired generating facilities, Crystal River Units 4-5, eight years ahead of schedule in 2034 rather than in 2042. The FPSC approved the 2021 Settlement on May 4, 2021.

(d)The rate case filed July 2, 2019, included proposed depreciation rates reflecting retirement dates from 2026 to 2038. The depreciation rates reflecting these updated retirement dates were approved by the IURC as part of the rate case order issued on June 29, 2020.

4. COMMITMENTS AND CONTINGENCIES

ENVIRONMENTAL

The Duke Energy Registrants are subject to federal, state and local regulations regarding air and water quality, hazardous and solid waste disposal, coal ash and other environmental matters. These regulations can be changed from time to time, imposing new obligations on the Duke Energy Registrants. The following environmental matters impact all Duke Energy Registrants.

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FINANCIAL STATEMENTS COMMITMENTS AND CONTINGENCIES

Remediation Activities

In addition to AROs recorded as a result of various environmental regulations, the Duke Energy Registrants are responsible for environmental remediation at various sites. These include certain properties that are part of ongoing operations and sites formerly owned or used by Duke Energy entities. These sites are in various stages of investigation, remediation and monitoring. Managed in conjunction with relevant federal, state and local agencies, remediation activities vary based upon site conditions and location, remediation requirements, complexity and sharing of responsibility. If remediation activities involve joint and several liability provisions, strict liability, or cost recovery or contribution actions, the Duke Energy Registrants could potentially be held responsible for environmental impacts caused by other potentially responsible parties and may also benefit from insurance policies or contractual indemnities that cover some or all cleanup costs. Liabilities are recorded when losses become probable and are reasonably estimable. The total costs that may be incurred cannot be estimated because the extent of environmental impact, allocation among potentially responsible parties, remediation alternatives and/or regulatory decisions have not yet been determined at all sites. Additional costs associated with remediation activities are likely to be incurred in the future and could be significant. Costs are typically expensed as Operation, maintenance and other on the Condensed Consolidated Statements of Operations unless regulatory recovery of the costs is deemed probable.

The following table contains information regarding reserves for probable and estimable costs related to the various environmental sites. These reserves are recorded in Other within Other Noncurrent Liabilities on the Condensed Consolidated Balance Sheets.

(in millions)	March 31, 2022		December 31, 2021
Reserves for Environmental Remediation
Duke Energy	$	87	$	88
Duke Energy Carolinas	19		19
Progress Energy	23		23
Duke Energy Progress	11		11
Duke Energy Florida	11		11
Duke Energy Ohio	33		34
Duke Energy Indiana	4		4
Piedmont	8		9

Additional losses in excess of recorded reserves that could be incurred for the stages of investigation, remediation and monitoring for environmental sites that have been evaluated at this time are not material.

LITIGATION

Duke Energy

Michael Johnson et al. v. Duke Energy Corporation et al.

On September 23, 2020, plaintiff Michael Johnson, a former Duke Energy employee and participant in the Duke Energy Retirement Savings Plan (Plan) brought suit on his own behalf and on behalf of other participants and beneficiaries similarly situated against Duke Energy Corporation, the Duke Energy Benefits Committee, and other unnamed individual defendants. The complaint, which was subsequently amended to add a current participant as a plaintiff on November 23, 2020, alleges that the defendants breached their fiduciary duties with respect to certain fees associated with the Plan in violation of the Employee Retirement Income Security Act of 1974 and seeks certification of a class of all individuals who were participants or beneficiaries of the Plan at any time on or after September 23, 2014. The defendants filed a motion to dismiss the plaintiffs’ amended complaint on December 18, 2020. On January 31, 2022, the court denied the defendants' motion to dismiss. On February 28, 2022, Duke Energy responded to the amended complaint. Discovery commenced and the parties exchanged preliminary disclosures. After review of these disclosures, the parties filed a joint stipulation of dismissal with prejudice on April 28, 2022. If approved by the Court, this matter will be fully resolved. Duke Energy cannot predict the outcome of this matter.

Texas Storm Uri Tort Litigation

Several Duke Energy renewables project companies, located in the ERCOT market, were named in lawsuits arising out of Texas Storm Uri in mid-February 2021. Duke Energy Corporation, which had originally been named in several suits, was dismissed from the lawsuits. The lawsuits against the Duke Energy renewables project companies seek recovery for property damages, personal injury and for wrongful death allegedly caused by the power outages, which the plaintiffs claim was the result of collective failures of generators, transmission and distribution operators, retail energy providers and others, including ERCOT. The cases have been consolidated into a Texas state court multidistrict litigation (MDL) proceeding for discovery and pre-litigation purposes. Five MDL cases have been designated for motions to dismiss while all other cases are stayed. Duke Energy renewables projects are named as defendants in three of these five cases. The parties' briefing on omnibus motions to dismiss should be completed by July 2022 and will focus on lack of duty, tariff defenses and sovereign immunity. Decisions on these motions will be applicable to all of the stayed cases. Duke Energy cannot predict the outcomes of these matters.

50

FINANCIAL STATEMENTS COMMITMENTS AND CONTINGENCIES

Duke Energy Carolinas

Ruben Villano, et al. v. Duke Energy Carolinas, LLC

On June 16, 2021, a group of nine individuals went over a low head dam adjacent to the Dan River Steam Station in Eden, North Carolina, while water tubing. Emergency personnel rescued four people and five others were confirmed deceased. On August 11, 2021, Duke Energy Carolinas was served with the complaint filed in Durham County Superior Court on behalf of four survivors, which was later amended to include all the decedents along with the survivors, except for one minor. The lawsuit alleges that Duke Energy Carolinas knew that the river was used for recreational purposes and that Duke Energy did not adequately warn about the dam, and that Duke Energy Carolinas created a dangerous and hidden hazard on the Dan River in building and maintaining the low head dam. On September 30, 2021, Duke Energy Carolinas filed its motion to dismiss and motion for transfer of venue from Durham County to Rockingham County, both of which were denied on November 15, 2021. On November 15, 2021, Duke Energy Carolinas was also served with Plaintiffs Second Amended Complaint, which added the final minor plaintiff and consolidated all the actions into one lawsuit. Duke Energy Carolinas has filed its Answer and Affirmative Defenses to the Second Amended Complaint. Mediation is scheduled for December 2022. Discovery has commenced and is scheduled to be completed on or before February 28, 2023. The case is scheduled to be trial-ready by April 24, 2023. Duke Energy Carolinas cannot predict the outcome of this matter.

NTE Carolinas II, LLC Litigation

In November 2017, Duke Energy Carolinas entered into a standard FERC large generator interconnection agreement (LGIA) with NTE Carolinas II, LLC (NTE), a company that proposed to build a combined-cycle natural gas plant in Rockingham County, North Carolina. On September 6, 2019, Duke Energy Carolinas filed a lawsuit in Mecklenburg County Superior Court against NTE for breach of contract, alleging that NTE's failure to pay benchmark payments for Duke Energy Carolinas' transmission system upgrades required under the interconnection agreement constituted a termination of the interconnection agreement. Duke Energy Carolinas is seeking a monetary judgment against NTE because NTE failed to make multiple milestone payments. The lawsuit was moved to federal court in North Carolina. NTE filed a motion to dismiss Duke Energy Carolinas’ complaint and brought counterclaims alleging anti-competitive conduct and violations of state and federal statutes. Duke Energy Carolinas filed a motion to dismiss NTE's counterclaims.

On May 21, 2020, in response to a NTE petition challenging Duke Energy Carolinas' termination of the LGIA, FERC issued a ruling that 1) it has exclusive jurisdiction to determine whether a transmission provider may terminate a LGIA; 2) FERC approval is required to terminate a conforming LGIA if objected to by the interconnection customer; and 3) Duke Energy may not announce the termination of a conforming LGIA unless FERC has approved the termination. FERC's Office of Enforcement also initiated an investigation of Duke Energy Carolinas into matters pertaining to the LGIA. Duke Energy Carolinas is cooperating with the Office of Enforcement but cannot predict the outcome of this investigation.

On August 17, 2020, the court denied both NTE’s and Duke Energy Carolinas’ motions to dismiss. In October 2021, NTE filed a Second Amended Counterclaim and Complaint, and in January 2022, NTE filed a Third Amended Counterclaim and Complaint. Duke Energy Carolinas has responded to these pleadings. On December 6, 2021, Duke Energy Carolinas filed an Amended Complaint. On March 1, 2022, the parties participated in mediation, which ended in an impasse. On April 4, 2022, Duke Energy Carolinas filed a motion for summary judgment seeking a ruling in its favor as to some of its affirmative claims against NTE and to all of NTE’s counterclaims. Duke Energy Carolinas' motion will be fully briefed on May 10, 2022. The case is scheduled to be trial-ready by August 1, 2022. Duke Energy Carolinas cannot predict the outcome of this matter.

Asbestos-related Injuries and Damages Claims

Duke Energy Carolinas has experienced numerous claims for indemnification and medical cost reimbursement related to asbestos exposure. These claims relate to damages for bodily injuries alleged to have arisen from exposure to or use of asbestos in connection with construction and maintenance activities conducted on its electric generation plants prior to 1985.

Duke Energy Carolinas has recognized asbestos-related reserves of $495 million at March 31, 2022, and $501 million at December 31, 2021. These reserves are classified in Other within Other Noncurrent Liabilities and Other within Current Liabilities on the Condensed Consolidated Balance Sheets. These reserves are based upon Duke Energy Carolinas' best estimate for current and future asbestos claims through 2041 and are recorded on an undiscounted basis. In light of the uncertainties inherent in a longer-term forecast, management does not believe they can reasonably estimate the indemnity and medical costs that might be incurred after 2041 related to such potential claims. It is possible Duke Energy Carolinas may incur asbestos liabilities in excess of the recorded reserves.

Duke Energy Carolinas has third-party insurance to cover certain losses related to asbestos-related injuries and damages above an aggregate self-insured retention. Receivables for insurance recoveries were $644 million at March 31, 2022, and $644 million at December 31, 2021. These amounts are classified in Other within Other Noncurrent Assets and Receivables within Current Assets on the Condensed Consolidated Balance Sheets. Any future payments up to the policy limit will be reimbursed by the third-party insurance carrier. Duke Energy Carolinas is not aware of any uncertainties regarding the legal sufficiency of insurance claims. Duke Energy Carolinas believes the insurance recovery asset is probable of recovery as the insurance carrier continues to have a strong financial strength rating.

The reserve for credit losses for insurance receivables is $12 million for Duke Energy and Duke Energy Carolinas as of March 31, 2022, and December 31, 2021. The insurance receivable is evaluated based on the risk of default and the historical losses, current conditions and expected conditions around collectability. Management evaluates the risk of default annually based on payment history, credit rating and changes in the risk of default from credit agencies.

Duke Energy Progress and Duke Energy Florida

Spent Nuclear Fuel Matters

On June 18, 2018, Duke Energy Progress and Duke Energy Florida sued the U.S. in the U.S. Court of Federal Claims for damages incurred for the period 2014 through 2018. The lawsuit claimed the DOE breached a contract in failing to accept spent nuclear fuel under the Nuclear Waste Policy Act of 1982 and asserted damages for the cost of on-site storage in the amount of $100 million and $200 million for Duke Energy Progress and Duke Energy Florida, respectively.

51

FINANCIAL STATEMENTS COMMITMENTS AND CONTINGENCIES

On March 30, 2022, the DOE and Duke Energy Progress executed a settlement agreement, pursuant to which Duke Energy Progress will receive damages for costs incurred between 2014 and 2018, and will be able to submit future costs on a defined schedule. In April 2022, Duke Energy Progress received $87 million in proceeds that related to damages incurred in 2014 through 2018.

On May 2, 2022, the DOE and Duke Energy Florida executed a settlement agreement, pursuant to which Duke Energy Florida will receive approximately $180 million for costs incurred between 2014 and 2018, and will be able to submit costs incurred in 2019 and 2020 pursuant to an audit process.

Duke Energy Indiana

Coal Ash Basin Closure Plan Appeal

On January 27, 2020, Hoosier Environmental Council (HEC) filed a Petition for Administrative Review with the Indiana Office of Environmental Adjudication challenging the Indiana Department of Environmental Management’s (IDEM's) December 10, 2019, partial approval of Duke Energy Indiana’s ash pond closure plan at Duke Energy's Gallagher power station. After hearing oral arguments in early April 2021 on Duke Energy Indiana's and HEC's competing Motions for Summary Judgment, on May 4, 2021, the administrative court rejected all of HEC’s claims and issued a ruling in favor of Duke Energy Indiana. On June 3, 2021, HEC filed an appeal in Superior Court to seek judicial review of the order. On June 25, 2021, Duke Energy Indiana filed its response to the Petition to Review. On August 30, 2021, HEC served Duke Energy Indiana with its Brief in Support of Petition for Judicial Review. On October 29, 2021, Duke Energy Indiana and IDEM filed their response briefs. On December 13, 2021, HEC filed and served its Reply Brief.

On January 11, 2022, Duke Energy Indiana received a compliance obligation letter from the EPA notifying the company that the two basins at issue in the litigation are subject to requirements of the CCR Rule. The letter does not provide a deadline for compliance. Duke Energy Indiana is evaluating the EPA letter, its potential impacts on the litigation and the extent to which this letter could apply to CCR surface impoundments at its other Indiana sites.

Following the January 11, 2022 EPA notice of compliance letter, the parties filed a joint motion to stay the litigation for 45 days, which was approved by the court. As a result, the oral argument scheduled for February 1, 2022, was postponed. Duke Energy Indiana and HEC engaged in settlement discussions, but the parties were unable to reach resolution. On April 21, 2022, HEC filed a Motion to Lift Stay and Motion for Judicial Notice. HEC also requested that the court hold a hearing within 45 days and also take judicial notice of the EPA's January 11, 2022 letter. On April 22, 2022, Duke Energy Indiana sent IDEM a letter withdrawing the closure plans for the Gallagher North Ash Pond and Primary Pond Ash Fill. After acknowledgment by IDEM of withdrawal of these closure plans, Duke Energy Indiana filed a Motion to Dismiss the litigation as moot on April 28, 2022, and IDEM filed a separate brief on May 2, 2022, in support of this motion. Briefing is ongoing. Duke Energy Indiana cannot predict the outcome of this matter.

Other Litigation and Legal Proceedings

The Duke Energy Registrants are involved in other legal, tax and regulatory proceedings arising in the ordinary course of business, some of which involve significant amounts. The Duke Energy Registrants believe the final disposition of these proceedings will not have a material effect on their results of operations, cash flows or financial position. Reserves are classified on the Condensed Consolidated Balance Sheets in Other within Other Noncurrent Liabilities and Other within Current Liabilities.

OTHER COMMITMENTS AND CONTINGENCIES

General

As part of their normal business, the Duke Energy Registrants are party to various financial guarantees, performance guarantees and other contractual commitments to extend guarantees of credit and other assistance to various subsidiaries, investees and other third parties. These guarantees involve elements of performance and credit risk, which are not fully recognized on the Condensed Consolidated Balance Sheets and have uncapped maximum potential payments. However, the Duke Energy Registrants do not believe these guarantees will have a material effect on their results of operations, cash flows or financial position.

In addition, the Duke Energy Registrants enter into various fixed-price, noncancelable commitments to purchase or sell power or natural gas, take-or-pay arrangements, transportation, or throughput agreements and other contracts that may or may not be recognized on their respective Condensed Consolidated Balance Sheets. Some of these arrangements may be recognized at fair value on their respective Condensed Consolidated Balance Sheets if such contracts meet the definition of a derivative and the NPNS exception does not apply. In most cases, the Duke Energy Registrants’ purchase obligation contracts contain provisions for price adjustments, minimum purchase levels and other financial commitments.

52

FINANCIAL STATEMENTS DEBT AND CREDIT FACILITIES

5. DEBT AND CREDIT FACILITIES

SUMMARY OF SIGNIFICANT DEBT ISSUANCES

The following table summarizes significant debt issuances (in millions).

				Three Months Ended March 31, 2022
						Duke		Duke
	Maturity	Interest		Duke		Energy		Energy
Issuance Date	Date	Rate		Energy		Carolinas		Progress
First Mortgage Bonds
March 2022(a)	March 2032	2.850	%	$	500	$	500	$	—
March 2022(a)	March 2052	3.550	%	650		650		—
March 2022(a)	April 2032	3.400	%	500		—		500
March 2022(a)	April 2052	4.000	%	400		—		400
Total issuances				$	2,050	$	1,150	$	900

(a)Proceeds will be used to finance or refinance, in whole or in part, existing or new eligible projects under the sustainable financing framework.

CURRENT MATURITIES OF LONG-TERM DEBT

The following table shows the significant components of Current maturities of long-term debt on the Condensed Consolidated Balance Sheets. The Duke Energy Registrants currently anticipate satisfying these obligations with cash on hand and proceeds from additional borrowings.

(in millions)	Maturity Date	Interest Rate		March 31, 2022
Unsecured Debt
Progress Energy	April 2022	3.150	%	$	450
Duke Energy (Parent)	August 2022	3.050	%	500
Duke Energy (Parent)	August 2022	2.400	%	500
First Mortgage Bonds
Duke Energy Carolinas	May 2022	3.350	%	350
Duke Energy Progress	May 2022	2.800	%	500
Duke Energy Carolinas	March 2023	2.500	%	500
Duke Energy Carolinas	March 2023	3.050	%	500
Other(a)				584
Current maturities of long-term debt				$	3,884

(a)Includes finance lease obligations, amortizing debt, tax-exempt bonds with mandatory put options and small bullet maturities.

AVAILABLE CREDIT FACILITIES

Master Credit Facility

In March 2022, Duke Energy amended its existing Master Credit Facility to increase the amount of the facility from $8 billion to $9 billion and to extend the termination date to March 2027. The Duke Energy Registrants, excluding Progress Energy, have borrowing capacity under the Master Credit Facility up to a specified sublimit for each borrower. Duke Energy has the unilateral ability at any time to increase or decrease the borrowing sublimits of each borrower, subject to a maximum sublimit for each borrower. The amount available under the Master Credit Facility has been reduced to backstop issuances of commercial paper, certain letters of credit and variable-rate demand tax-exempt bonds that may be put to the Duke Energy Registrants at the option of the holder.

53

FINANCIAL STATEMENTS DEBT AND CREDIT FACILITIES

The table below includes the current borrowing sublimits and available capacity under these credit facilities.

	March 31, 2022
			Duke		Duke		Duke		Duke		Duke		Duke
	Duke		Energy		Energy		Energy		Energy		Energy		Energy
(in millions)	Energy		(Parent)		Carolinas		Progress		Florida		Ohio		Indiana		Piedmont
Facility size(a)	$	9,000	$	3,300	$	1,225	$	1,400	$	900	$	775	$	600	$	800
Reduction to backstop issuances
Commercial paper(b)	(2,819)		(1,715)		(300)		(150)		(236)		(86)		(150)		(182)
Outstanding letters of credit	(38)		(25)		(4)		(2)		(7)		—		—		—
Tax-exempt bonds	(81)		—		—		—		—		—		(81)		—
Available capacity under the Master Credit Facility	$	6,062	$	1,560	$	921	$	1,248	$	657	$	689	$	369	$	618

(a)Represents the sublimit of each borrower.

(b)Duke Energy issued $625 million of commercial paper and loaned the proceeds through the money pool to Duke Energy Carolinas, Duke Energy Progress, Duke Energy Ohio and Duke Energy Indiana. The balances are classified as Long-Term Debt Payable to Affiliated Companies on the Condensed Consolidated Balance Sheets.

Other Credit Facilities

Duke Energy (Parent) Term Loan Facility

On March 9, 2022, Duke Energy (Parent) entered into a Term Loan Credit Agreement (Credit Agreement) with commitments totaling $1.4 billion maturing March 9, 2024. The maturity date of the Credit Agreement may be extended for up to two years by request of Duke Energy (Parent), upon satisfaction of certain conditions contained in the Credit Agreement. Borrowings under the facility were used to repay amounts drawn under the Three-Year Revolving Credit Facility and for general corporate purposes, including repayment of a portion of Duke Energy's outstanding commercial paper. The balance is classified as Long-Term Debt on Duke Energy's Condensed Consolidated Balance Sheets. The Three-Year Revolving Credit Facility was terminated in March 2022.

Intercompany Credit Agreements

In March 2022, Progress Energy closed a revolving credit agreement with Duke Energy (Parent), which allowed up to $2.5 billion in intercompany borrowings.

6. GOODWILL

Duke Energy

The following table presents the goodwill by reportable segment included on Duke Energy's Condensed Consolidated Balance Sheets at March 31, 2022, and December 31, 2021.

	Electric Utilities		Gas Utilities		Commercial
(in millions)	and Infrastructure		and Infrastructure		Renewables		Total
Goodwill balance	$	17,379	$	1,924	$	122	$	19,425
Accumulated impairment charges	—		—		(122)		(122)
Goodwill, adjusted for accumulated impairment charges	$	17,379	$	1,924	$	—	$	19,303

Duke Energy Ohio

Duke Energy Ohio's Goodwill balance of $920 million, allocated $596 million to Electric Utilities and Infrastructure and $324 million to Gas Utilities and Infrastructure, is presented net of accumulated impairment charges of $216 million on the Condensed Consolidated Balance Sheets at March 31, 2022, and December 31, 2021.

Progress Energy

Progress Energy's Goodwill is included in the Electric Utilities and Infrastructure segment and there are no accumulated impairment charges.

Piedmont

Piedmont's Goodwill is included in the Gas Utilities and Infrastructure segment and there are no accumulated impairment charges.

54

FINANCIAL STATEMENTS RELATED PARTY TRANSACTIONS

7. RELATED PARTY TRANSACTIONS

The Subsidiary Registrants engage in related party transactions in accordance with applicable state and federal commission regulations. Refer to the Condensed Consolidated Balance Sheets of the Subsidiary Registrants for balances due to or due from related parties. Material amounts related to transactions with related parties included on the Condensed Consolidated Statements of Operations and Comprehensive Income are presented in the following table.

	Three Months Ended March 31,
(in millions)	2022		2021
Duke Energy Carolinas
Corporate governance and shared service expenses(a)	$	206	$	203
Indemnification coverages(b)	7		6
Joint Dispatch Agreement (JDA) revenue(c)	26		13
JDA expense(c)	94		40
Intercompany natural gas purchases(d)	13		14
Progress Energy
Corporate governance and shared service expenses(a)	$	196	$	181
Indemnification coverages(b)	11		10
JDA revenue(c)	94		40
JDA expense(c)	26		13
Intercompany natural gas purchases(d)	19		19
Duke Energy Progress
Corporate governance and shared service expenses(a)	$	119	$	105
Indemnification coverages(b)	5		5
JDA revenue(c)	94		40
JDA expense(c)	26		13
Intercompany natural gas purchases(d)	19		19
Duke Energy Florida
Corporate governance and shared service expenses(a)	$	77	$	76
Indemnification coverages(b)	6		5
Duke Energy Ohio
Corporate governance and shared service expenses(a)	$	82	$	79
Indemnification coverages(b)	1		1
Duke Energy Indiana
Corporate governance and shared service expenses(a)	$	124	$	113
Indemnification coverages(b)	2		2
Piedmont
Corporate governance and shared service expenses(a)	$	35	$	33
Indemnification coverages(b)	1		1
Intercompany natural gas sales(d)	32		33
Natural gas storage and transportation costs(e)	6		6

(a)The Subsidiary Registrants are charged their proportionate share of corporate governance and other shared services costs, primarily related to human resources, employee benefits, information technology, legal and accounting fees, as well as other third-party costs. These amounts are primarily recorded in Operation, maintenance and other on the Condensed Consolidated Statements of Operations and Comprehensive Income.

(b)The Subsidiary Registrants incur expenses related to certain indemnification coverages through Bison, Duke Energy’s wholly owned captive insurance subsidiary. These expenses are recorded in Operation, maintenance and other on the Condensed Consolidated Statements of Operations and Comprehensive Income.

(c)Duke Energy Carolinas and Duke Energy Progress participate in a JDA, which allows the collective dispatch of power plants between the service territories to reduce customer rates. Revenues from the sale of power and expenses from the purchase of power pursuant to the JDA are recorded in Operating Revenues and Fuel used in electric generation and purchased power, respectively, on the Condensed Consolidated Statements of Operations and Comprehensive Income.

(d)Piedmont provides long-term natural gas delivery service to certain Duke Energy Carolinas and Duke Energy Progress natural gas-fired generation facilities. Piedmont records the sales in Operating revenues, and Duke Energy Carolinas and Duke Energy Progress record the related purchases as a component of Fuel used in electric generation and purchased power on their respective Condensed Consolidated Statements of Operations and Comprehensive Income.

(e)Piedmont has related party transactions as a customer of its equity method investments in Pine Needle LNG Company, LLC, Hardy Storage Company, LLC and Cardinal Pipeline Company, LLC natural gas storage and transportation facilities. These expenses are included in Cost of natural gas on Piedmont's Condensed Consolidated Statements of Operations and Comprehensive Income.

55

FINANCIAL STATEMENTS RELATED PARTY TRANSACTIONS

In addition to the amounts presented above, the Subsidiary Registrants have other affiliate transactions, including rental of office space, participation in a money pool arrangement, other operational transactions, such as pipeline lease arrangements, and their proportionate share of certain charged expenses. These transactions of the Subsidiary Registrants are incurred in the ordinary course of business and are eliminated in consolidation.

As discussed in Note 11, certain trade receivables have been sold by Duke Energy Ohio and Duke Energy Indiana to CRC, an affiliate formed by a subsidiary of Duke Energy. The proceeds obtained from the sales of receivables are largely cash but do include a subordinated note from CRC for a portion of the purchase price.

Intercompany Income Taxes

Duke Energy and the Subsidiary Registrants file a consolidated federal income tax return and other state and jurisdictional returns. The Subsidiary Registrants have a tax sharing agreement with Duke Energy for the allocation of consolidated tax liabilities and benefits. Income taxes recorded represent amounts the Subsidiary Registrants would incur as separate C-Corporations. The following table includes the balance of intercompany income tax receivables and payables for the Subsidiary Registrants.

	Duke				Duke		Duke		Duke		Duke
	Energy		Progress		Energy		Energy		Energy		Energy
(in millions)	Carolinas		Energy		Progress		Florida		Ohio		Indiana		Piedmont
March 31, 2022
Intercompany income tax receivable	$	20	$	49	$	—	$	9	$	5	$	—	$	—
Intercompany income tax payable	—		—		15		—		—		44		45
December 31, 2021
Intercompany income tax receivable	$	—	$	—	$	—	$	40	$	19	$	—	$	—
Intercompany income tax payable	62		—		84		—		—		10		27

8. DERIVATIVES AND HEDGING

The Duke Energy Registrants use commodity and interest rate contracts to manage commodity price risk and interest rate risk. The primary use of commodity derivatives is to hedge the generation portfolio against changes in the prices of electricity and natural gas. Piedmont enters into natural gas supply contracts to provide diversification, reliability and natural gas cost benefits to its customers. Interest rate derivatives are used to manage interest rate risk associated with borrowings.

All derivative instruments not identified as NPNS are recorded at fair value as assets or liabilities on the Condensed Consolidated Balance Sheets. Cash collateral related to derivative instruments executed under master netting arrangements is offset against the collateralized derivatives on the Condensed Consolidated Balance Sheets. The cash impacts of settled derivatives are recorded as operating activities on the Condensed Consolidated Statements of Cash Flows.

INTEREST RATE RISK

The Duke Energy Registrants are exposed to changes in interest rates as a result of their issuance or anticipated issuance of variable-rate and fixed-rate debt and commercial paper. Interest rate risk is managed by limiting variable-rate exposures to a percentage of total debt and by monitoring changes in interest rates. To manage risk associated with changes in interest rates, the Duke Energy Registrants may enter into interest rate swaps, U.S. Treasury lock agreements and other financial contracts. In anticipation of certain fixed-rate debt issuances, a series of forward-starting interest rate swaps or Treasury locks may be executed to lock in components of current market interest rates. These instruments are later terminated prior to or upon the issuance of the corresponding debt.

Cash Flow Hedges

For a derivative designated as hedging the exposure to variable cash flows of a future transaction, referred to as a cash flow hedge, the effective portion of the derivative's gain or loss is initially reported as a component of other comprehensive income and subsequently reclassified into earnings once the future transaction impacts earnings. Amounts for interest rate contracts are reclassified to earnings as interest expense over the term of the related debt. Gains and losses reclassified out of accumulated other comprehensive loss for the three months ended March 31, 2022, and 2021, were not material. Duke Energy's interest rate derivatives designated as hedges include interest rate swaps used to hedge existing debt within the Commercial Renewables segment and forward-starting interest rate swaps not accounted for under regulatory accounting.

Undesignated Contracts

Undesignated contracts primarily include contracts not designated as a hedge because they are accounted for under regulatory accounting or contracts that do not qualify for hedge accounting.

Duke Energy’s interest rate swaps for its regulated operations employ regulatory accounting. With regulatory accounting, the mark-to-market gains or losses on the swaps are deferred as regulatory liabilities or regulatory assets, respectively. Regulatory assets and liabilities are amortized consistent with the treatment of the related costs in the ratemaking process. The accrual of interest on the swaps is recorded as Interest Expense on the Duke Energy Registrant's Condensed Consolidated Statements of Operations and Comprehensive Income.

56

FINANCIAL STATEMENTS DERIVATIVES AND HEDGING

The following table shows notional amounts of outstanding derivatives related to interest rate risk.

	March 31, 2022
			Duke		Duke		Duke
	Duke		Energy		Energy		Energy
(in millions)	Energy		Carolinas		Indiana		Ohio
Cash flow hedges	$	2,913	$	—	$	—	$	—
Undesignated contracts	577		250		300		27
Total notional amount(a)	$	3,490	$	250	$	300	$	27

	December 31, 2021
			Duke				Duke		Duke		Duke
	Duke		Energy		Progress		Energy		Energy		Energy
(in millions)	Energy		Carolinas		Energy		Progress		Indiana		Ohio
Cash flow hedges	$	2,415	$	—	$	—	$	—	$	—	$	—
Undesignated contracts	1,177		350		500		500		300		27
Total notional amount(a)	$	3,592	$	350	$	500	$	500	$	300	$	27

(a)Duke Energy includes amounts related to consolidated VIEs of $663 million and $665 million in cash flow hedges as of March 31, 2022 and December 31, 2021, respectively.

COMMODITY PRICE RISK

The Duke Energy Registrants are exposed to the impact of changes in the prices of electricity purchased and sold in bulk power markets and natural gas purchases, including Piedmont's natural gas supply contracts. Exposure to commodity price risk is influenced by a number of factors including the term of contracts, the liquidity of markets and delivery locations. To manage risk associated with commodity prices, the Duke Energy Registrants may enter into long-term power purchase or sales contracts and long-term natural gas supply agreements.

Cash Flow Hedges

For derivatives designated as hedging the exposure to variable cash flows of a future transaction, referred to as a cash flow hedge, the derivative's gain or loss is initially reported as a component of other comprehensive income and subsequently reclassified into earnings once the future transaction impacts earnings. Gains and losses reclassified out of accumulated other comprehensive loss for the three months ended March 31, 2022, and 2021, were not material. Duke Energy’s commodity derivatives designated as hedges include long-term electricity sales in the Commercial Renewables segment.

Undesignated Contracts

For the Subsidiary Registrants, bulk power electricity and natural gas purchases flow through fuel adjustment clauses, formula-based contracts or other cost-sharing mechanisms. Differences between the costs included in rates and the incurred costs, including undesignated derivative contracts, are largely deferred as regulatory assets or regulatory liabilities. Piedmont policies allow for the use of financial instruments to hedge commodity price risks. The strategy and objective of these hedging programs are to use the financial instruments to reduce natural gas costs volatility for customers.

Volumes

The tables below include volumes of outstanding commodity derivatives. Amounts disclosed represent the absolute value of notional volumes of commodity contracts excluding NPNS. The Duke Energy Registrants have netted contractual amounts where offsetting purchase and sale contracts exist with identical delivery locations and times of delivery. Where all commodity positions are perfectly offset, no quantities are shown.

	March 31, 2022
		Duke		Duke	Duke	Duke
	Duke	Energy	Progress	Energy	Energy	Energy
	Energy	Carolinas	Energy	Progress	Ohio	Indiana	Piedmont
Electricity (GWh)(a)	16,176	—	—	—	791	4,501	—
Natural gas (millions of dekatherms)	860	284	243	243	—	7	326

57

FINANCIAL STATEMENTS DERIVATIVES AND HEDGING

	December 31, 2021
		Duke		Duke	Duke	Duke
	Duke	Energy	Progress	Energy	Energy	Energy
	Energy	Carolinas	Energy	Progress	Ohio	Indiana	Piedmont
Electricity (GWh)(a)	22,344	—	—	—	1,681	10,688	—
Natural gas (millions of dekatherms)	823	264	215	215	—	8	336

(a)Duke Energy includes 9,763 GWh and 9,975 GWh related to cash flow hedges as of March 31, 2022, and December 31, 2021, respectively.

LOCATION AND FAIR VALUE OF DERIVATIVE ASSETS AND LIABILITIES RECOGNIZED ON THE CONDENSED CONSOLIDATED BALANCE SHEETS

The following tables show the fair value and balance sheet location of derivative instruments. Although derivatives subject to master netting arrangements are netted on the Condensed Consolidated Balance Sheets, the fair values presented below are shown gross and cash collateral on the derivatives has not been netted against the fair values shown.

Derivative Assets	March 31, 2022
			Duke				Duke		Duke		Duke		Duke
	Duke		Energy		Progress		Energy		Energy		Energy		Energy
(in millions)	Energy		Carolinas		Energy		Progress		Florida		Ohio		Indiana		Piedmont
Commodity Contracts
Not Designated as Hedging Instruments
Current	$	673	$	335	$	295	$	255	$	40	$	—	$	28	$	7
Noncurrent	280		151		130		130		—		—		—		—
Total Derivative Assets – Commodity Contracts	$	953	$	486	$	425	$	385	$	40	$	—	$	28	$	7
Interest Rate Contracts
Designated as Hedging Instruments
Current	$	94	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Noncurrent	37		—		—		—		—		—		—		—
Not Designated as Hedging Instruments
Noncurrent	24		7		—		—		—		—		17		—
Total Derivative Assets – Interest Rate Contracts	$	155	$	7	$	—	$	—	$	—	$	—	$	17	$	—
Total Derivative Assets	$	1,108	$	493	$	425	$	385	$	40	$	—	$	45	$	7

58

FINANCIAL STATEMENTS DERIVATIVES AND HEDGING

Derivative Liabilities	March 31, 2022
			Duke				Duke		Duke		Duke		Duke
	Duke		Energy		Progress		Energy		Energy		Energy		Energy
(in millions)	Energy		Carolinas		Energy		Progress		Florida		Ohio		Indiana		Piedmont
Commodity Contracts
Designated as Hedging Instruments
Current	$	49	$	—	$	—	$	—	$	—	$	—	$	—	—
Noncurrent	160		—		—		—		—		—		—		—
Not Designated as Hedging Instruments
Current	61		36		—		—		—		—		—		24
Noncurrent	149		1		—		—		—		—		—		149
Total Derivative Liabilities – Commodity Contracts	$	419	$	37	$	—	$	—	$	—	$	—	$	—	$	173
Interest Rate Contracts
Designated as Hedging Instruments
Current	$	4	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Noncurrent	7		—		—		—		—		—		—		—
Not Designated as Hedging Instruments
Current	1		—		—		—		—		1		—		—
Noncurrent	2		—		—		—		—		2		—		—
Total Derivative Liabilities – Interest Rate Contracts	$	14	$	—	$	—	$	—	$	—	$	3	$	—	$	—
Total Derivative Liabilities	$	433	$	37	$	—	$	—	$	—	$	3	$	—	$	173

Derivative Assets	December 31, 2021
			Duke				Duke		Duke		Duke		Duke
	Duke		Energy		Progress		Energy		Energy		Energy		Energy
(in millions)	Energy		Carolinas		Energy		Progress		Florida		Ohio		Indiana		Piedmont
Commodity Contracts
Not Designated as Hedging Instruments
Current	$	199	$	99	$	72	$	72	$	—	$	2	$	23	$	3
Noncurrent	113		63		50		50		—		—		—		—
Total Derivative Assets – Commodity Contracts	$	312	$	162	$	122	$	122	$	—	$	2	$	23	$	3
Interest Rate Contracts
Designated as Hedging Instruments
Current	$	3	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Noncurrent	3		—		—		—		—		—		—		—
Not Designated as Hedging Instruments
Current	2		—		2		2		—		—		—		—
Total Derivative Assets – Interest Rate Contracts	$	8	$	—	$	2	$	2	$	—	$	—	$	—	$	—
Total Derivative Assets	$	320	$	162	$	124	$	124	$	—	$	2	$	23	$	3

59

FINANCIAL STATEMENTS DERIVATIVES AND HEDGING

Derivative Liabilities	December 31, 2021
			Duke				Duke		Duke		Duke		Duke
	Duke		Energy		Progress		Energy		Energy		Energy		Energy
(in millions)	Energy		Carolinas		Energy		Progress		Florida		Ohio		Indiana		Piedmont
Commodity Contracts
Designated as Hedging Instruments
Current	$	27	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Noncurrent	117		—		—		—		—		—		—		—
Not Designated as Hedging Instruments
Current	72		18		19		5		14		—		13		21
Noncurrent	132		9		5		5		—		—		—		118
Total Derivative Liabilities – Commodity Contracts	$	348	$	27	$	24	$	10	$	14	$	—	$	13	$	139
Interest Rate Contracts
Designated as Hedging Instruments
Current	$	75	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Noncurrent	21		—		—		—		—		—		—		—
Not Designated as Hedging Instruments
Current	10		8		—		—		—		1		—		—
Noncurrent	18		—		—		—		—		4		14		—
Total Derivative Liabilities – Interest Rate Contracts	$	124	$	8	$	—	$	—	$	—	$	5	$	14	$	—
Total Derivative Liabilities	$	472	$	35	$	24	$	10	$	14	$	5	$	27	$	139

OFFSETTING ASSETS AND LIABILITIES

The following tables present the line items on the Condensed Consolidated Balance Sheets where derivatives are reported. Substantially all of Duke Energy's outstanding derivative contracts are subject to enforceable master netting arrangements. The gross amounts offset in the tables below show the effect of these netting arrangements on financial position, and include collateral posted to offset the net position. The amounts shown are calculated by counterparty. Accounts receivable or accounts payable may also be available to offset exposures in the event of bankruptcy. These amounts are not included in the tables below.

Derivative Assets	March 31, 2022
			Duke				Duke		Duke		Duke		Duke
	Duke		Energy		Progress		Energy		Energy		Energy		Energy
(in millions)	Energy		Carolinas		Energy		Progress		Florida		Ohio		Indiana		Piedmont
Current
Gross amounts recognized	$	767	$	335	$	295	$	255	$	40	$	—	$	28	$	7
Gross amounts offset	(255)		(149)		(106)		(106)		—		—		—		—
Net amounts presented in Current Assets: Other	$	512	$	186	$	189	$	149	$	40	$	—	$	28	$	7
Noncurrent
Gross amounts recognized	$	341	$	158	$	130	$	130	$	—	$	—	$	17	$	—
Gross amounts offset	(115)		(64)		(51)		(51)		—		—		—		—
Net amounts presented in Other Noncurrent Assets: Other	$	226	$	94	$	79	$	79	$	—	$	—	$	17	$	—

60

FINANCIAL STATEMENTS DERIVATIVES AND HEDGING

Derivative Liabilities	March 31, 2022
			Duke				Duke		Duke		Duke		Duke
	Duke		Energy		Progress		Energy		Energy		Energy		Energy
(in millions)	Energy		Carolinas		Energy		Progress		Florida		Ohio		Indiana		Piedmont
Current
Gross amounts recognized	$	115	$	36	$	—	$	—	$	—	$	1	$	—	$	24
Gross amounts offset	—		—		—		—		—		—		—		—
Net amounts presented in Current Liabilities: Other	$	115	$	36	$	—	$	—	$	—	$	1	$	—	$	24
Noncurrent
Gross amounts recognized	$	318	$	1	$	—	$	—	$	—	$	2	$	—	$	149
Gross amounts offset	—		—		—		—		—		—		—		—
Net amounts presented in Other Noncurrent Liabilities: Other	$	318	$	1	$	—	$	—	$	—	$	2	$	—	$	149

Derivative Assets	December 31, 2021
			Duke				Duke		Duke		Duke		Duke
	Duke		Energy		Progress		Energy		Energy		Energy		Energy
(in millions)	Energy		Carolinas		Energy		Progress		Florida		Ohio		Indiana		Piedmont
Current
Gross amounts recognized	$	204	$	99	$	74	$	74	$	—	$	2	$	23	$	3
Gross amounts offset	(25)		(16)		(9)		(9)		—		—		—		—
Net amounts presented in Current Assets: Other	$	179	$	83	$	65	$	65	$	—	$	2	$	23	$	3
Noncurrent
Gross amounts recognized	$	116	$	63	$	50	$	50	$	—	$	—	$	—	$	—
Gross amounts offset	(23)		(15)		(8)		(8)		—		—		—		—
Net amounts presented in Other Noncurrent Assets: Other	$	93	$	48	$	42	$	42	$	—	$	—	$	—	$	—

Derivative Liabilities	December 31, 2021
			Duke				Duke		Duke		Duke		Duke
	Duke		Energy		Progress		Energy		Energy		Energy		Energy
(in millions)	Energy		Carolinas		Energy		Progress		Florida		Ohio		Indiana		Piedmont
Current
Gross amounts recognized	$	184	$	26	$	19	$	5	$	14	$	1	$	13	$	21
Gross amounts offset	(11)		(6)		(5)		(5)		—		—		—		—
Net amounts presented in Current Liabilities: Other	$	173	$	20	$	14	$	—	$	14	$	1	$	13	$	21
Noncurrent
Gross amounts recognized	$	288	$	9	$	5	$	5	$	—	$	4	$	14	$	118
Gross amounts offset	(12)		(8)		(5)		(5)		—		—		—		—
Net amounts presented in Other Noncurrent Liabilities: Other	$	276	$	1	$	—	$	—	$	—	$	4	$	14	$	118

9. INVESTMENTS IN DEBT AND EQUITY SECURITIES

Duke Energy’s investments in debt and equity securities are primarily comprised of investments held in (i) the NDTF at Duke Energy Carolinas, Duke Energy Progress and Duke Energy Florida, (ii) the grantor trusts at Duke Energy Progress, Duke Energy Florida and Duke Energy Indiana related to OPEB plans and (iii) Bison. The Duke Energy Registrants classify investments in debt securities as AFS and investments in equity securities as fair value through net income (FV-NI).

For investments in debt securities classified as AFS, the unrealized gains and losses are included in other comprehensive income until realized, at which time they are reported through net income. For investments in equity securities classified as FV-NI, both realized and unrealized gains and losses are reported through net income. Substantially all of Duke Energy’s investments in debt and equity securities qualify for regulatory accounting, and accordingly, all associated realized and unrealized gains and losses on these investments are deferred as a regulatory asset or liability.

Duke Energy classifies the majority of investments in debt and equity securities as long term, unless otherwise noted.

61

FINANCIAL STATEMENTS INVESTMENTS IN DEBT AND EQUITY SECURITIES

Investment Trusts

The investments within the Investment Trusts are managed by independent investment managers with discretion to buy, sell and invest pursuant to the objectives set forth by the investment manager agreements and trust agreements. The Duke Energy Registrants have limited oversight of the day-to-day management of these investments. As a result, the ability to hold investments in unrealized loss positions is outside the control of the Duke Energy Registrants. Accordingly, all unrealized losses associated with debt securities within the Investment Trusts are recognized immediately and deferred to regulatory accounts where appropriate.

Other AFS Securities

Unrealized gains and losses on all other AFS securities are included in other comprehensive income until realized, unless it is determined the carrying value of an investment has a credit loss. The Duke Energy Registrants analyze all investment holdings each reporting period to determine whether a decline in fair value is related to a credit loss. If a credit loss exists, the unrealized credit loss is included in earnings. There were no material credit losses as of March 31, 2022, and December 31, 2021.

Other Investments amounts are recorded in Other within Other Noncurrent Assets on the Condensed Consolidated Balance Sheets.

DUKE ENERGY

The following table presents the estimated fair value of investments in debt and equity securities; equity investments are classified as FV-NI and debt investments are classified as AFS.

	March 31, 2022						December 31, 2021
	Gross		Gross				Gross		Gross
	Unrealized		Unrealized		Estimated		Unrealized		Unrealized		Estimated
	Holding		Holding		Fair		Holding		Holding		Fair
(in millions)	Gains		Losses		Value		Gains		Losses		Value
NDTF
Cash and cash equivalents	$	—	$	—	$	128	$	—	$	—	$	160
Equity securities	4,486		62		6,853		4,905		43		7,350
Corporate debt securities	9		43		786		39		6		829
Municipal bonds	2		16		321		14		1		314
U.S. government bonds	10		57		1,561		31		12		1,568
Other debt securities	—		7		177		3		1		180
Total NDTF Investments	$	4,507	$	185	$	9,826	$	4,992	$	63	$	10,401
Other Investments
Cash and cash equivalents	$	—	$	—	$	110	$	—	$	—	$	36
Equity securities	31		4		147		36		—		156
Corporate debt securities	—		7		124		2		1		119
Municipal bonds	1		2		83		3		1		80
U.S. government bonds	—		2		45		—		—		56
Other debt securities	—		2		36		—		1		45
Total Other Investments	$	32	$	17	$	545	$	41	$	3	$	492
Total Investments	$	4,539	$	202	$	10,371	$	5,033	$	66	$	10,893

Realized gains and losses, which were determined on a specific identification basis, from sales of FV-NI and AFS securities for the three months ended March 31, 2022, and 2021, were as follows.

	Three Months Ended
(in millions)	March 31, 2022		March 31, 2021
FV-NI:
Realized gains	$	111	$	140
Realized losses	85		23
AFS:
Realized gains	4		18
Realized losses	23		13

62

FINANCIAL STATEMENTS INVESTMENTS IN DEBT AND EQUITY SECURITIES

DUKE ENERGY CAROLINAS

The following table presents the estimated fair value of investments in debt and equity securities; equity investments are classified as FV-NI and debt investments are classified as AFS.

	March 31, 2022						December 31, 2021
	Gross		Gross				Gross		Gross
	Unrealized		Unrealized		Estimated		Unrealized		Unrealized		Estimated
	Holding		Holding		Fair		Holding		Holding		Fair
(in millions)	Gains		Losses		Value		Gains		Losses		Value
NDTF
Cash and cash equivalents	$	—	$	—	$	60	$	—	$	—	$	53
Equity securities	2,632		30		3,962		2,887		19		4,265
Corporate debt securities	6		30		503		24		4		506
Municipal bonds	—		5		52		2		—		48
U.S. government bonds	4		21		692		16		3		712
Other debt securities	—		7		172		3		1		175
Total NDTF Investments	$	2,642	$	93	$	5,441	$	2,932	$	27	$	5,759

Realized gains and losses, which were determined on a specific identification basis, from sales of FV-NI and AFS securities for the three months ended March 31, 2022, and 2021, were as follows.

	Three Months Ended
(in millions)	March 31, 2022		March 31, 2021
FV-NI:
Realized gains	$	75	$	128
Realized losses	49		16
AFS:
Realized gains	3		13
Realized losses	16		9

PROGRESS ENERGY

The following table presents the estimated fair value of investments in debt and equity securities; equity investments are classified as FV-NI and debt investments are classified as AFS.

	March 31, 2022						December 31, 2021
	Gross		Gross				Gross		Gross
	Unrealized		Unrealized		Estimated		Unrealized		Unrealized		Estimated
	Holding		Holding		Fair		Holding		Holding		Fair
(in millions)	Gains		Losses		Value		Gains		Losses		Value
NDTF
Cash and cash equivalents	$	—	$	—	$	68	$	—	$	—	$	107
Equity securities	1,854		32		2,891		2,018		24		3,085
Corporate debt securities	3		13		283		15		2		323
Municipal bonds	2		11		269		12		1		266
U.S. government bonds	6		36		869		15		9		856
Other debt securities	—		—		5		—		—		5
Total NDTF Investments	$	1,865	$	92	$	4,385	$	2,060	$	36	$	4,642
Other Investments
Cash and cash equivalents	$	—	$	—	$	17	$	—	$	—	$	20
Municipal bonds	1		—		26		2		—		26
Total Other Investments	$	1	$	—	$	43	$	2	$	—	$	46
Total Investments	$	1,866	$	92	$	4,428	$	2,062	$	36	$	4,688

63

FINANCIAL STATEMENTS INVESTMENTS IN DEBT AND EQUITY SECURITIES

Realized gains and losses, which were determined on a specific identification basis, from sales of FV-NI and AFS securities for the three months ended March 31, 2022, and 2021, were as follows.

	Three Months Ended
(in millions)	March 31, 2022		March 31, 2021
FV-NI:
Realized gains	$	36	$	12
Realized losses	36		7
AFS:
Realized gains	1		4
Realized losses	6		3

DUKE ENERGY PROGRESS

The following table presents the estimated fair value of investments in debt and equity securities; equity investments are classified as FV-NI and debt investments are classified as AFS.

	March 31, 2022						December 31, 2021
	Gross		Gross				Gross		Gross
	Unrealized		Unrealized		Estimated		Unrealized		Unrealized		Estimated
	Holding		Holding		Fair		Holding		Holding		Fair
(in millions)	Gains		Losses		Value		Gains		Losses		Value
NDTF
Cash and cash equivalents	$	—	$	—	$	58	$	—	$	—	$	94
Equity securities	1,757		32		2,782		1,915		23		2,970
Corporate debt securities	3		12		255		15		2		282
Municipal bonds	2		11		269		12		1		266
U.S. government bonds	6		19		502		15		3		472
Other debt securities	—		—		5		—		—		5
Total NDTF Investments	$	1,768	$	74	$	3,871	$	1,957	$	29	$	4,089
Other Investments
Cash and cash equivalents	$	—	$	—	$	14	$	—	$	—	$	16
Total Other Investments	$	—	$	—	$	14	$	—	$	—	$	16
Total Investments	$	1,768	$	74	$	3,885	$	1,957	$	29	$	4,105

Realized gains and losses, which were determined on a specific identification basis, from sales of FV-NI and AFS securities for the three months ended March 31, 2022, and 2021, were as follows.

	Three Months Ended
(in millions)	March 31, 2022		March 31, 2021
FV-NI:
Realized gains	$	36	$	12
Realized losses	35		7
AFS:
Realized gains	1		4
Realized losses	5		3

64

FINANCIAL STATEMENTS INVESTMENTS IN DEBT AND EQUITY SECURITIES

DUKE ENERGY FLORIDA

The following table presents the estimated fair value of investments in debt and equity securities; equity investments are classified as FV-NI and debt investments are classified as AFS.

	March 31, 2022						December 31, 2021
	Gross		Gross				Gross		Gross
	Unrealized		Unrealized		Estimated		Unrealized		Unrealized		Estimated
	Holding		Holding		Fair		Holding		Holding		Fair
(in millions)	Gains		Losses		Value		Gains		Losses		Value
NDTF
Cash and cash equivalents	$	—	$	—	$	10	$	—	$	—	$	13
Equity securities	97		—		109		103		1		115
Corporate debt securities	—		1		28		—		—		41
U.S. government bonds	—		17		367		—		6		384
Total NDTF Investments(a)	$	97	$	18	$	514	$	103	$	7	$	553
Other Investments
Cash and cash equivalents	$	—	$	—	$	2	$	—	$	—	$	3
Municipal bonds	1		—		26		2		—		26
Total Other Investments	$	1	$	—	$	28	$	2	$	—	$	29
Total Investments	$	98	$	18	$	542	$	105	$	7	$	582

(a)During the three months ended March 31, 2022, and the year ended December 31, 2021, Duke Energy Florida received reimbursements from the NDTF for costs related to ongoing decommissioning activity of Crystal River Unit 3.

Realized gains and losses, which were determined on a specific identification basis, from sales of FV-NI and AFS securities for the three months ended March 31, 2022, and 2021, were immaterial.

DUKE ENERGY INDIANA

The following table presents the estimated fair value of investments in debt and equity securities; equity investments are measured at FV-NI and debt investments are classified as AFS.

	March 31, 2022						December 31, 2021
	Gross		Gross				Gross		Gross
	Unrealized		Unrealized		Estimated		Unrealized		Unrealized		Estimated
	Holding		Holding		Fair		Holding		Holding		Fair
(in millions)	Gains		Losses		Value		Gains		Losses		Value
Investments
Cash and cash equivalents	$	—	$	—	$	1	$	—	$	—	$	—
Equity securities	4		4		91		6		—		97
Corporate debt securities	—		—		8		—		—		6
Municipal bonds	—		2		49		1		1		46
U.S. government bonds	—		—		6		—		—		12
Total Investments	$	4	$	6	$	155	$	7	$	1	$	161

Realized gains and losses, which were determined on a specific identification basis, from sales of FV-NI and AFS securities for the three months ended March 31, 2022, and 2021, were immaterial.

DEBT SECURITY MATURITIES

The table below summarizes the maturity date for debt securities.

	March 31, 2022
			Duke				Duke		Duke		Duke
	Duke		Energy		Progress		Energy		Energy		Energy
(in millions)	Energy		Carolinas		Energy		Progress		Florida		Indiana
Due in one year or less	$	162	$	7	$	139	$	32	$	107	$	8
Due after one through five years	969		367		528		270		258		24
Due after five through 10 years	536		235		228		212		16		6
Due after 10 years	1,466		810		557		517		40		25
Total	$	3,133	$	1,419	$	1,452	$	1,031	$	421	$	63

65

FINANCIAL STATEMENTS FAIR VALUE MEASUREMENTS

10. FAIR VALUE MEASUREMENTS

Fair value is the exchange price to sell an asset or transfer a liability in an orderly transaction between market participants at the measurement date. The fair value definition focuses on an exit price versus the acquisition cost. Fair value measurements use market data or assumptions market participants would use in pricing the asset or liability, including assumptions about risk and the risks inherent in the inputs to the valuation technique. These inputs may be readily observable, corroborated by market data or generally unobservable. Valuation techniques maximize the use of observable inputs and minimize use of unobservable inputs. A midmarket pricing convention (the midpoint price between bid and ask prices) is permitted for use as a practical expedient.

Fair value measurements are classified in three levels based on the fair value hierarchy as defined by GAAP. Certain investments are not categorized within the fair value hierarchy. These investments are measured at fair value using the net asset value (NAV) per share practical expedient. The NAV is derived based on the investment cost, less any impairment, plus or minus changes resulting from observable price changes for an identical or similar investment of the same issuer.

Fair value accounting guidance permits entities to elect to measure certain financial instruments that are not required to be accounted for at fair value, such as equity method investments or the company’s own debt, at fair value. The Duke Energy Registrants have not elected to record any of these items at fair value.

Valuation methods of the primary fair value measurements disclosed below are as follows.

Investments in equity securities

The majority of investments in equity securities are valued using Level 1 measurements. Investments in equity securities are typically valued at the closing price in the principal active market as of the last business day of the quarter. Principal active markets for equity prices include published exchanges such as the New York Stock Exchange and Nasdaq Stock Market. Foreign equity prices are translated from their trading currency using the currency exchange rate in effect at the close of the principal active market. There was no after-hours market activity that was required to be reflected in the reported fair value measurements.

Investments in debt securities

Most investments in debt securities are valued using Level 2 measurements because the valuations use interest rate curves and credit spreads applied to the terms of the debt instrument (maturity and coupon interest rate) and consider the counterparty credit rating. If the market for a particular fixed-income security is relatively inactive or illiquid, the measurement is Level 3.

Commodity derivatives

Commodity derivatives with clearinghouses are classified as Level 1. Commodity derivatives with observable forward curves are classified as Level 2. If forward price curves are not observable for the full term of the contract and the unobservable period had more than an insignificant impact on the valuation, the commodity derivative is classified as Level 3. In isolation, increases (decreases) in natural gas forward prices result in favorable (unfavorable) fair value adjustments for natural gas purchase contracts; and increases (decreases) in electricity forward prices result in unfavorable (favorable) fair value adjustments for electricity sales contracts. Duke Energy regularly evaluates and validates pricing inputs used to estimate the fair value of natural gas commodity contracts by a market participant price verification procedure. This procedure provides a comparison of internal forward commodity curves to market participant generated curves.

Interest rate derivatives

Most over-the-counter interest rate contract derivatives are valued using financial models that utilize observable inputs for similar instruments and are classified as Level 2. Inputs include forward interest rate curves, notional amounts, interest rates and credit quality of the counterparties.

Other fair value considerations

See Note 11 in Duke Energy's Annual Report on Form 10-K for the year ended December 31, 2021, for a discussion of the valuation of goodwill and intangible assets.

66

FINANCIAL STATEMENTS FAIR VALUE MEASUREMENTS

DUKE ENERGY

The following tables provide recorded balances for assets and liabilities measured at fair value on a recurring basis on the Condensed Consolidated Balance Sheets. Derivative amounts in the tables below for all Duke Energy Registrants exclude cash collateral, which is disclosed in Note 8. See Note 9 for additional information related to investments by major security type for the Duke Energy Registrants.

	March 31, 2022
(in millions)	Total Fair Value		Level 1		Level 2		Level 3		Not Categorized
NDTF cash and cash equivalents	$	128	$	128	$	—	$	—	$	—
NDTF equity securities	6,853		6,806		—		—		47
NDTF debt securities	2,845		947		1,898		—		—
Other equity securities	147		147		—		—		—
Other debt securities	288		39		249		—		—
Other cash and cash equivalents	110		110		—		—		—
Derivative assets	1,108		27		1,071		10		—
Total assets	11,479		8,204		3,218		10		47
Derivative liabilities	(433)		—		(224)		(209)		—
Net assets (liabilities)	$	11,046	$	8,204	$	2,994	$	(199)	$	47

	December 31, 2021
(in millions)	Total Fair Value		Level 1		Level 2		Level 3		Not Categorized
NDTF cash and cash equivalents	$	160	$	160	$	—	$	—	$	—
NDTF equity securities	7,350		7,300		—		—		50
NDTF debt securities	2,891		967		1,924		—		—
Other equity securities	156		156		—		—		—
Other debt securities	300		45		255		—		—
Other cash and cash equivalents	36		36		—		—		—
Derivative assets	320		3		293		24		—
Total assets	11,213		8,667		2,472		24		50
Derivative liabilities	(472)		(13)		(314)		(145)		—
Net assets (liabilities)	$	10,741	$	8,654	$	2,158	$	(121)	$	50

The following tables provide reconciliations of beginning and ending balances of assets and liabilities measured at fair value using Level 3 measurements.

	Derivatives (net)
	Three Months Ended March 31,
(in millions)	2022		2021
Balance at beginning of period	$	(121)	$	(77)
Total pretax realized or unrealized losses included in comprehensive income	(68)		(44)
Purchases, sales, issuances and settlements:
Settlements	(3)		(7)
Total (losses) gains included on the Condensed Consolidated Balance Sheet	(7)		2
Balance at end of period	$	(199)	$	(126)

67

FINANCIAL STATEMENTS FAIR VALUE MEASUREMENTS

DUKE ENERGY CAROLINAS

The following tables provide recorded balances for assets and liabilities measured at fair value on a recurring basis on the Condensed Consolidated Balance Sheets.

	March 31, 2022
(in millions)	Total Fair Value		Level 1		Level 2		Not Categorized
NDTF cash and cash equivalents	$	60	$	60	$	—	$	—
NDTF equity securities	3,962		3,915		—		47
NDTF debt securities	1,419		349		1,070		—
Derivative assets	493		—		493		—
Total assets	5,934		4,324		1,563		47
Derivative liabilities	(37)		—		(37)		—
Net assets	$	5,897	$	4,324	$	1,526	$	47

	December 31, 2021
(in millions)	Total Fair Value		Level 1		Level 2		Not Categorized
NDTF cash and cash equivalents	$	53	$	53	$	—	$	—
NDTF equity securities	4,265		4,215		—		50
NDTF debt securities	1,441		339		1,102		—
Derivative assets	162		—		162		—
Total assets	5,921		4,607		1,264		50
Derivative liabilities	(35)		—		(35)		—
Net assets	$	5,886	$	4,607	$	1,229	$	50

PROGRESS ENERGY

The following tables provide recorded balances for assets and liabilities measured at fair value on a recurring basis on the Condensed Consolidated Balance Sheets.

	March 31, 2022						December 31, 2021
(in millions)	Total Fair Value		Level 1		Level 2		Total Fair Value		Level 1		Level 2
NDTF cash and cash equivalents	$	68	$	68	$	—	$	107	$	107	$	—
NDTF equity securities	2,891		2,891		—		3,085		3,085		—
NDTF debt securities	1,426		598		828		1,450		628		822
Other debt securities	26		—		26		26		—		26
Other cash and cash equivalents	17		17		—		20		20		—
Derivative assets	425		2		423		124		—		124
Total assets	4,853		3,576		1,277		4,812		3,840		972
Derivative liabilities	—		—		—		(24)		—		(24)
Net assets	$	4,853	$	3,576	$	1,277	$	4,788	$	3,840	$	948

DUKE ENERGY PROGRESS

The following tables provide recorded balances for assets and liabilities measured at fair value on a recurring basis on the Condensed Consolidated Balance Sheets.

	March 31, 2022						December 31, 2021
(in millions)	Total Fair Value		Level 1		Level 2		Total Fair Value		Level 1		Level 2
NDTF cash and cash equivalents	$	58	$	58	$	—	$	94	$	94	$	—
NDTF equity securities	2,782		2,782		—		2,970		2,970		—
NDTF debt securities	1,031		279		752		1,025		289		736
Other cash and cash equivalents	14		14		—		16		16		—
Derivative assets	385		2		383		124		—		124
Total assets	4,270		3,135		1,135		4,229		3,369		860
Derivative liabilities	—		—		—		(10)		—		(10)
Net assets	$	4,270	$	3,135	$	1,135	$	4,219	$	3,369	$	850

68

FINANCIAL STATEMENTS FAIR VALUE MEASUREMENTS

DUKE ENERGY FLORIDA

The following tables provide recorded balances for assets and liabilities measured at fair value on a recurring basis on the Condensed Consolidated Balance Sheets.

	March 31, 2022						December 31, 2021
(in millions)	Total Fair Value		Level 1		Level 2		Total Fair Value		Level 1		Level 2
NDTF cash and cash equivalents	$	10	$	10	$	—	$	13	$	13	$	—
NDTF equity securities	109		109		—		115		115		—
NDTF debt securities	395		319		76		425		339		86
Other debt securities	26		—		26		26		—		26
Other cash and cash equivalents	2		2		—		3		3		—
Derivative assets	40		—		40		—		—		—
Total assets	582		440		142		582		470		112
Derivative liabilities	—		—		—		(14)		—		(14)
Net assets	$	582	$	440	$	142	$	568	$	470	$	98

DUKE ENERGY OHIO

The recorded balances for assets and liabilities measured at fair value on a recurring basis on the Condensed Consolidated Balance Sheets were not material at March 31, 2022, and December 31, 2021.

DUKE ENERGY INDIANA

The following tables provide recorded balances for assets and liabilities measured at fair value on a recurring basis on the Condensed Consolidated Balance Sheets.

	March 31, 2022								December 31, 2021
(in millions)	Total Fair Value		Level 1		Level 2		Level 3		Total Fair Value		Level 1		Level 2		Level 3
Other equity securities	$	91	$	91	$	—	$	—	$	97	$	97	$	—	$	—
Other debt securities	63		—		63		—		64		—		64		—
Other cash and cash equivalents	1		1		—		—		—		—		—		—
Derivative assets	45		18		17		10		23		1		—		22
Total assets	200		110		80		10		184		98		64		22
Derivative liabilities	—		—		—		—		(27)		(13)		(14)		—
Net assets	$	200	$	110	$	80	$	10	$	157	$	85	$	50	$	22

The following table provides a reconciliation of beginning and ending balances of assets and liabilities measured at fair value using Level 3 measurements.

	Derivatives (net)
	Three Months Ended March 31,
(in millions)	2022		2021
Balance at beginning of period	$	22	$	6
Purchases, sales, issuances and settlements:
Settlements	(6)		(6)
Total (losses) gains included on the Condensed Consolidated Balance Sheet	(6)		2
Balance at end of period	$	10	$	2

PIEDMONT

The following tables provide recorded balances for assets and liabilities measured at fair value on a recurring basis on the Condensed Consolidated Balance Sheets.

	March 31, 2022						December 31, 2021
(in millions)	Total Fair Value		Level 1		Level 2		Total Fair Value		Level 1		Level 2
Derivative assets	$	7	$	7	$	—	$	3	$	3	$	—
Derivative liabilities	(173)		—		(173)		(139)		—		(139)
Net (liabilities) assets	$	(166)	$	7	$	(173)	$	(136)	$	3	$	(139)

69

FINANCIAL STATEMENTS FAIR VALUE MEASUREMENTS

QUANTITATIVE INFORMATION ABOUT UNOBSERVABLE INPUTS

The following tables include quantitative information about the Duke Energy Registrants' derivatives classified as Level 3.

	March 31, 2022
										Weighted
	Fair Value									Average
Investment Type	(in millions)		Valuation Technique	Unobservable Input	Range					Range
Duke Energy
Electricity contracts	$	(210)	RTO forward pricing	Forward electricity curves – price per MWh	$	20.33	-	$	187.82	$	46.51
Duke Energy Ohio
FTRs	1		RTO auction pricing	FTR price – per MWh	0.16		-	1.26		0.63
Duke Energy Indiana
FTRs	10		RTO auction pricing	FTR price – per MWh	(0.46)		-	17.24		2.32
Duke Energy
Total Level 3 derivatives	$	(199)

	December 31, 2021
									Weighted
	Fair Value								Average
Investment Type	(in millions)		Valuation Technique	Unobservable Input	Range				Range
Duke Energy
Electricity contracts	$	(145)	RTO forward pricing	Forward electricity curves – price per MWh	$	19.04	-	$139.11	$37.57
Duke Energy Ohio
FTRs	2		RTO auction pricing	FTR price – per MWh	0.06		-	1.79	0.96
Duke Energy Indiana
FTRs	22		RTO auction pricing	FTR price – per MWh	(1.18)		-	13.11	2.68
Duke Energy
Total Level 3 derivatives	$	(121)

OTHER FAIR VALUE DISCLOSURES

The fair value and book value of long-term debt, including current maturities, is summarized in the following table. Estimates determined are not necessarily indicative of amounts that could have been settled in current markets. Fair value of long-term debt uses Level 2 measurements.

	March 31, 2022				December 31, 2021
(in millions)	Book Value		Fair Value		Book Value		Fair Value
Duke Energy(a)	$	66,080	$	66,633	$	63,835	$	69,683
Duke Energy Carolinas	14,470		15,117		13,275		15,101
Progress Energy	21,657		22,669		20,823		23,751
Duke Energy Progress	11,114		11,260		10,249		11,252
Duke Energy Florida	8,451		8,911		8,482		9,772
Duke Energy Ohio	3,193		3,278		3,193		3,570
Duke Energy Indiana	4,270		4,554		4,323		5,067
Piedmont	2,969		2,984		2,968		3,278

(a)Book value of long-term debt includes $1.2 billion and $1.25 billion at March 31, 2022, and December 31, 2021, respectively, of net unamortized debt discount and premium of purchase accounting adjustments related to the mergers with Progress Energy and Piedmont that are excluded from fair value of long-term debt.

At both March 31, 2022, and December 31, 2021, fair value of cash and cash equivalents, accounts and notes receivable, accounts payable, notes payable and commercial paper and nonrecourse notes payable of VIEs are not materially different from their carrying amounts because of the short-term nature of these instruments and/or because the stated rates approximate market rates.

11. VARIABLE INTEREST ENTITIES

CONSOLIDATED VIEs

The obligations of the consolidated VIEs discussed in the following paragraphs are nonrecourse to the Duke Energy Registrants. The registrants have no requirement to provide liquidity to, purchase assets of or guarantee performance of these VIEs unless noted in the following paragraphs.

70

FINANCIAL STATEMENTS VARIABLE INTEREST ENTITIES

No financial support was provided to any of the consolidated VIEs during the three months ended March 31, 2022, and the year ended December 31, 2021, or is expected to be provided in the future that was not previously contractually required.

Receivables Financing – DERF/DEPR/DEFR

DERF, DEPR and DEFR are bankruptcy remote, special purpose subsidiaries of Duke Energy Carolinas, Duke Energy Progress and Duke Energy Florida, respectively. DERF, DEPR and DEFR are wholly owned LLCs with separate legal existence from their parent companies, and their assets are not generally available to creditors of their parent companies. On a revolving basis, DERF, DEPR and DEFR buy certain accounts receivable arising from the sale of electricity and related services from their parent companies.

DERF, DEPR and DEFR borrow amounts under credit facilities to buy these receivables. Borrowing availability from the credit facilities is limited to the amount of qualified receivables purchased, which generally exclude receivables past due more than a predetermined number of days and reserves for expected past-due balances. The sole source of funds to satisfy the related debt obligations is cash collections from the receivables. Amounts borrowed under the credit facilities are reflected on the Condensed Consolidated Balance Sheets as Long-Term Debt.

The most significant activity that impacts the economic performance of DERF, DEPR and DEFR are the decisions made to manage delinquent receivables. Duke Energy Carolinas, Duke Energy Progress and Duke Energy Florida are considered the primary beneficiaries and consolidate DERF, DEPR and DEFR, respectively, as they make those decisions.

Receivables Financing – CRC

CRC is a bankruptcy remote, special purpose entity indirectly owned by Duke Energy. On a revolving basis, CRC buys certain accounts receivable arising from the sale of electricity, natural gas and related services from Duke Energy Ohio and Duke Energy Indiana. CRC borrows amounts under a credit facility to buy the receivables from Duke Energy Ohio and Duke Energy Indiana. Borrowing availability from the credit facility is limited to the amount of qualified receivables sold to CRC, which generally exclude receivables past due more than a predetermined number of days and reserves for expected past-due balances. The sole source of funds to satisfy the related debt obligation is cash collections from the receivables. Amounts borrowed under the credit facility are reflected on Duke Energy's Condensed Consolidated Balance Sheets as Long-Term Debt.

The proceeds Duke Energy Ohio and Duke Energy Indiana receive from the sale of receivables to CRC are approximately 75% cash and 25% in the form of a subordinated note from CRC. The subordinated note is a retained interest in the receivables sold. Depending on collection experience, additional equity infusions to CRC may be required by Duke Energy to maintain a minimum equity balance of $3 million.

CRC is considered a VIE because (i) equity capitalization is insufficient to support its operations, (ii) power to direct the activities that most significantly impact the economic performance of the entity is not held by the equity holder and (iii) deficiencies in net worth of CRC are funded by Duke Energy. The most significant activities that impact the economic performance of CRC are decisions made to manage delinquent receivables. Duke Energy is considered the primary beneficiary and consolidates CRC as it makes these decisions. Neither Duke Energy Ohio nor Duke Energy Indiana consolidate CRC.

Receivables Financing – Credit Facilities

The following table summarizes the amounts and expiration dates of the credit facilities and associated restricted receivables described above.

	Duke Energy
			Duke Energy		Duke Energy		Duke Energy
			Carolinas		Progress		Florida
(in millions)	CRC		DERF		DEPR		DEFR
Expiration date	February 2025		January 2025		April 2023		April 2023
Credit facility amount	$	350	$	475	$	350	$	250
Amounts borrowed at March 31, 2022	350		499		350		250
Amounts borrowed at December 31, 2021	350		475		350		250
Restricted Receivables at March 31, 2022	566		858		658		503
Restricted Receivables at December 31, 2021	587		844		574		427

Nuclear Asset-Recovery Bonds – DEFPF

DEFPF is a bankruptcy remote, wholly owned special purpose subsidiary of Duke Energy Florida. DEFPF was formed in 2016 for the sole purpose of issuing nuclear asset-recovery bonds to finance Duke Energy Florida's unrecovered regulatory asset related to Crystal River Unit 3.

In 2016, DEFPF issued senior secured bonds and used the proceeds to acquire nuclear asset-recovery property from Duke Energy Florida. The nuclear asset-recovery property acquired includes the right to impose, bill, collect and adjust a non-bypassable nuclear asset-recovery charge from all Duke Energy Florida retail customers until the bonds are paid in full and all financing costs have been recovered. The nuclear asset-recovery bonds are secured by the nuclear asset-recovery property and cash collections from the nuclear asset-recovery charges are the sole source of funds to satisfy the debt obligation. The bondholders have no recourse to Duke Energy Florida.

DEFPF is considered a VIE primarily because the equity capitalization is insufficient to support its operations. Duke Energy Florida has the power to direct the significant activities of the VIE as described above and therefore Duke Energy Florida is considered the primary beneficiary and consolidates DEFPF.

71

FINANCIAL STATEMENTS VARIABLE INTEREST ENTITIES

The following table summarizes the impact of DEFPF on Duke Energy Florida's Condensed Consolidated Balance Sheets.

(in millions)	March 31, 2022		December 31, 2021
Receivables of VIEs	$	5	$	5
Regulatory Assets: Current	54		54
Current Assets: Other	13		39
Other Noncurrent Assets: Regulatory assets	872		883
Current Liabilities: Other	2		9
Current maturities of long-term debt	56		56
Long-Term Debt	916		946

Storm Recovery Bonds – Duke Energy Carolinas NC Storm Funding and Duke Energy Progress NC Storm Funding

Duke Energy Carolinas NC Storm Funding, LLC. (DECNCSF) and Duke Energy Progress NC Storm Funding, LLC. (DEPNCSF) are bankruptcy remote, wholly owned special purpose subsidiaries of Duke Energy Carolinas and Duke Energy Progress, respectively. These entities were formed in 2021 for the sole purpose of issuing storm recovery bonds to finance certain of Duke Energy Carolinas’ and Duke Energy Progress’ unrecovered regulatory assets related to storm costs.

In November 2021, DECNCSF and DEPNCSF issued $237 million and $770 million of senior secured bonds, respectively and used the proceeds to acquire storm recovery property from Duke Energy Carolinas and Duke Energy Progress. The storm recovery property was created by state legislation and NCUC financing orders for the purpose of financing storm costs incurred in 2018 and 2019. The storm recovery property acquired includes the right to impose, bill, collect and adjust a non-bypassable charge from all Duke Energy Carolinas’ and Duke Energy Progress’ retail customers until the bonds are paid in full and all financing costs have been recovered. The storm recovery bonds are secured by the storm recovery property and cash collections from the storm recovery charges are the sole source of funds to satisfy the debt obligation. The bondholders have no recourse to Duke Energy Carolinas or Duke Energy Progress.

DECNCSF and DEPNCSF are considered VIEs primarily because the equity capitalization is insufficient to support their operations. Duke Energy Carolinas and Duke Energy Progress have the power to direct the significant activities of the VIEs as described above and therefore Duke Energy Carolinas and Duke Energy Progress are considered the primary beneficiaries and consolidate DECNCSF and DEPNCSF, respectively.

The following table summarizes the impact of these VIEs on Duke Energy Carolinas’ and Duke Energy Progress’ Consolidated Balance Sheets.

	March 31, 2022				December 31, 2021
	Duke Energy		Duke Energy		Duke Energy		Duke Energy
(in millions)	Carolinas		Progress		Carolinas		Progress
Regulatory Assets: Current	$	12	$	39	$	12	$	39
Current Assets: Other	4		14		—		—
Other Noncurrent Assets: Regulatory assets	217		711		220		720
Other Noncurrent Assets: Other	1		4		1		4
Current Liabilities: Other	2		6		—		—
Current maturities of long-term debt	10		32		5		15
Long-Term Debt	223		730		228		747

Commercial Renewables

Certain of Duke Energy’s renewable energy facilities are VIEs due to Duke Energy issuing guarantees for debt service and operations and maintenance reserves in support of debt financings. Assets are restricted and cannot be pledged as collateral or sold to third parties without prior approval of debt holders. Additionally, Duke Energy has VIEs associated with tax equity arrangements entered into with third-party investors in order to finance the cost of renewable assets eligible for tax credits. The activities that most significantly impacted the economic performance of these renewable energy facilities were decisions associated with siting, negotiating PPAs and Engineering, Procurement and Construction agreements, and decisions associated with ongoing operations and maintenance-related activities. Duke Energy is considered the primary beneficiary and consolidates the entities as it is responsible for all of these decisions.

The table below presents material balances reported on Duke Energy's Condensed Consolidated Balance Sheets related to Commercial Renewables VIEs.

(in millions)	March 31, 2022		December 31, 2021
Current Assets: Other	$	215	$	215
Property, Plant and Equipment: Cost	7,337		7,339
Accumulated depreciation and amortization	(1,534)		(1,474)
Other Noncurrent Assets: Other	70		62
Current maturities of long-term debt	297		167
Long-Term Debt	1,325		1,475
Other Noncurrent Liabilities: AROs	173		173
Other Noncurrent Liabilities: Other	360		319

72

FINANCIAL STATEMENTS VARIABLE INTEREST ENTITIES

NON-CONSOLIDATED VIEs

The following tables summarize the impact of non-consolidated VIEs on the Condensed Consolidated Balance Sheets.

	March 31, 2022
	Duke Energy						Duke		Duke
	Pipeline		Commercial				Energy		Energy
(in millions)	Investments		Renewables		Total		Ohio		Indiana
Receivables from affiliated companies	$	—	$	—	$	—	$	65	$	80
Investments in equity method unconsolidated affiliates	29		504		533		—		—
Deferred tax asset	61		—		61		—		—
Total assets	$	90	$	504	$	594	$	65	$	80
Other current liabilities	50		3		53		—		—
Other noncurrent liabilities	52		3		55		—		—
Total liabilities	$	102	$	6	$	108	$	—	$	—
Net (liabilities) assets	$	(12)	$	498	$	486	$	65	$	80

	December 31, 2021
	Duke Energy						Duke		Duke
	Pipeline		Commercial				Energy		Energy
(in millions)	Investments		Renewables		Total		Ohio		Indiana
Receivables from affiliated companies	$	—	$	—	$	—	$	79	$	97
Investments in equity method unconsolidated affiliates	15		508		523		—		—
Other noncurrent assets	61		—		61		—		—
Total assets	$	76	$	508	$	584	$	79	$	97
Other current liabilities	47		4		51		—		—
Other noncurrent liabilities	54		3		57		—		—
Total liabilities	$	101	$	7	$	108	$	—	$	—
Net (liabilities) assets	$	(25)	$	501	$	476	$	79	$	97

The Duke Energy Registrants are not aware of any situations where the maximum exposure to loss significantly exceeds the carrying values shown above except for certain renewable energy project entities guarantees for debt services and operations and maintenance, as discussed below.

Pipeline Investments

Duke Energy has investments in various joint ventures to construct and operate pipeline projects. These entities are considered VIEs due to having insufficient equity to finance their own activities without subordinated financial support. Duke Energy does not have the power to direct the activities that most significantly impact the economic performance, the obligation to absorb losses or the right to receive benefits of these VIEs and therefore does not consolidate these entities.

Commercial Renewables

Duke Energy has investments in various renewable energy project entities. Duke Energy has a 50% ownership in a VIE, which owns a portfolio of wind projects. This entity is a VIE as a result of Duke Energy issuing guarantees for debt service and operations and maintenance reserves in support of debt financings. Duke Energy does not consolidate this VIE because power to direct and control key activities is shared jointly by Duke Energy and the other owner. Duke Energy also has equity ownership in an entity, which owns a portfolio of fuel cell projects. Duke Energy does not consolidate the fuel cell portfolio as it does not have the power to direct the activities that most significantly impact the economic performance of the entity.

OVEC

Duke Energy Ohio’s 9% ownership interest in OVEC is considered a non-consolidated VIE due to OVEC having insufficient equity to finance its activities without subordinated financial support. The activities that most significantly impact OVEC's economic performance include fuel strategy and supply activities and decisions associated with ongoing operations and maintenance-related activities. Duke Energy Ohio does not have the unilateral power to direct these activities, and therefore, does not consolidate OVEC.

As a counterparty to an Inter-Company Power Agreement (ICPA), Duke Energy Ohio has a contractual arrangement to receive entitlements to capacity and energy from OVEC’s power plants through June 2040 commensurate with its power participation ratio, which is equivalent to Duke Energy Ohio's ownership interest. Costs, including fuel, operating expenses, fixed costs, debt amortization and interest expense, are allocated to counterparties to the ICPA based on their power participation ratio. The value of the ICPA is subject to variability due to fluctuation in power prices and changes in OVEC's cost of business.

CRC

See discussion under Consolidated VIEs for additional information related to CRC.

73

FINANCIAL STATEMENTS VARIABLE INTEREST ENTITIES

Amounts included in Receivables from affiliated companies in the above table for Duke Energy Ohio and Duke Energy Indiana reflect their retained interest in receivables sold to CRC. These subordinated notes held by Duke Energy Ohio and Duke Energy Indiana are stated at fair value.

The following table shows the gross and net receivables sold.

	Duke Energy Ohio				Duke Energy Indiana
(in millions)	March 31, 2022		December 31, 2021		March 31, 2022		December 31, 2021
Receivables sold	$	263	$	269	$	305	$	328
Less: Retained interests	65		79		80		97
Net receivables sold	$	198	$	190	$	225	$	231

The following table shows sales and cash flows related to receivables sold.

	Duke Energy Ohio					Duke Energy Indiana
		Three Months Ended					Three Months Ended
		March 31,					March 31,
(in millions)		2022		2021			2022		2021
Sales
Receivables sold		$	663	$	561		$	782	$	698
Loss recognized on sale		3		3			4		3
Cash flows
Cash proceeds from receivables sold		$	674	$	596		$	795	$	746
Collection fees received		—		—			—		—
Return received on retained interests		1		1			2		2

Cash flows from sales of receivables are reflected within Cash Flows From Operating Activities and Cash Flows from Investing Activities on Duke Energy Ohio’s and Duke Energy Indiana’s Condensed Consolidated Statements of Cash Flows.

12. REVENUE

Duke Energy earns substantially all of its revenues through its reportable segments, Electric Utilities and Infrastructure, Gas Utilities and Infrastructure and Commercial Renewables.

Electric Utilities and Infrastructure

Electric Utilities and Infrastructure earns the majority of its revenues through retail and wholesale electric service through the generation, transmission, distribution and sale of electricity. Duke Energy generally provides retail and wholesale electric service customers with their full electric load requirements or with supplemental load requirements when the customer has other sources of electricity.

The majority of wholesale revenues are full requirements contracts where the customers purchase the substantial majority of their energy needs and do not have a fixed quantity of contractually required energy or capacity. As such, related forecasted revenues are considered optional purchases. Supplemental requirements contracts that include contracted blocks of energy and capacity at contractually fixed prices have the following estimated remaining performance obligations:

	Remaining Performance Obligations
(in millions)	2022		2023		2024		2025		2026		Thereafter		Total
Progress Energy	$	80	$	53	$	45	$	7	$	7	$	43	$	235
Duke Energy Progress	6		8		8		—		—		—		22
Duke Energy Florida	74		45		37		7		7		43		213
Duke Energy Indiana	2		11		16		17		15		12		73

Revenues for block sales are recognized monthly as energy is delivered and stand-ready service is provided, consistent with invoiced amounts and unbilled estimates.

Gas Utilities and Infrastructure

Gas Utilities and Infrastructure earns its revenue through retail and wholesale natural gas service through the transportation, distribution and sale of natural gas. Duke Energy generally provides retail and wholesale natural gas service customers with all natural gas load requirements. Additionally, while natural gas can be stored, substantially all natural gas provided by Duke Energy is consumed by customers simultaneously with receipt of delivery.

74

FINANCIAL STATEMENTS REVENUE

Fixed-capacity payments under long-term contracts for the Gas Utilities and Infrastructure segment include minimum margin contracts and supply arrangements with municipalities and power generation facilities. Revenues for related sales are recognized monthly as natural gas is delivered and stand-ready service is provided, consistent with invoiced amounts and unbilled estimates. Estimated remaining performance obligations are as follows:

	Remaining Performance Obligations
(in millions)	2022		2023		2024		2025		2026		Thereafter		Total
Piedmont	$	48	$	64	$	61	$	60	$	50	$	286	$	569

Commercial Renewables

Commercial Renewables earns the majority of its revenues through long-term PPAs and generally sells all of its wind and solar facility output, electricity and Renewable Energy Certificates (RECs) to customers. Some of these PPAs have been accounted for as leases. For PPAs that are not accounted for as leases, the delivery of electricity and the delivery of RECs are considered separate performance obligations.

Other

The remainder of Duke Energy’s operations is presented as Other, which does not include material revenues from contracts with customers.

Disaggregated Revenues

Disaggregated revenues are presented as follows:

	Three Months Ended March 31, 2022
			Duke				Duke		Duke		Duke		Duke
(in millions)	Duke		Energy		Progress		Energy		Energy		Energy		Energy
By market or type of customer	Energy		Carolinas		Energy		Progress		Florida		Ohio		Indiana		Piedmont
Electric Utilities and Infrastructure
Residential	$	2,767	$	831	$	1,368	$	624	$	744	$	211	$	354	$	—
General	1,604		544		726		325		401		116		218		—
Industrial	772		276		270		194		76		35		192		—
Wholesale	626		113		411		349		62		23		79		—
Other revenues	202		111		211		139		72		21		(36)		—
Total Electric Utilities and Infrastructure revenue from contracts with customers	$	5,971	$	1,875	$	2,986	$	1,631	$	1,355	$	406	$	807	$	—
Gas Utilities and Infrastructure
Residential	$	572	$	—	$	—	$	—	$	—	$	149	$	—	$	423
Commercial	269		—		—		—		—		64		—		204
Industrial	57		—		—		—		—		7		—		50
Power Generation	—		—		—		—		—		—		—		24
Other revenues	115		—		—		—		—		6		—		93
Total Gas Utilities and Infrastructure revenue from contracts with customers	$	1,013	$	—	$	—	$	—	$	—	$	226	$	—	$	794
Commercial Renewables
Revenue from contracts with customers	$	51	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Other
Revenue from contracts with customers	$	7	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Total revenue from contracts with customers	$	7,042	$	1,875	$	2,986	$	1,631	$	1,355	$	632	$	807	$	794
Other revenue sources(a)	$	90	$	13	$	6	$	1	$	—	$	6	$	15	$	11
Total revenues	$	7,132	$	1,888	$	2,992	$	1,632	$	1,355	$	638	$	822	$	805

(a)Other revenue sources include revenues from leases, derivatives and alternative revenue programs that are not considered revenues from contracts with customers. Alternative revenue programs in certain jurisdictions include regulatory mechanisms that periodically adjust for over or under collection of related revenues.

75

FINANCIAL STATEMENTS REVENUE

	Three Months Ended March 31, 2021
			Duke				Duke		Duke		Duke		Duke
(in millions)	Duke		Energy		Progress		Energy		Energy		Energy		Energy
By market or type of customer	Energy		Carolinas		Energy		Progress		Florida		Ohio		Indiana		Piedmont
Electric Utilities and Infrastructure
Residential	$	2,462	$	793	$	1,162	$	560	$	602	$	195	$	313	$	—
General	1,419		502		624		306		318		104		189		—
Industrial	662		256		207		145		62		31		167		—
Wholesale	504		114		326		292		34		13		50		—
Other revenues	226		74		160		83		77		22		18		—
Total Electric Utilities and Infrastructure revenue from contracts with customers	$	5,273	$	1,739	$	2,479	$	1,386	$	1,093	$	365	$	737	$	—
Gas Utilities and Infrastructure
Residential	$	460	$	—	$	—	$	—	$	—	$	110	$	—	$	351
Commercial	204		—		—		—		—		48		—		156
Industrial	50		—		—		—		—		7		—		43
Power Generation	—		—		—		—		—		—		—		22
Other revenues	47		—		—		—		—		5		—		26
Total Gas Utilities and Infrastructure revenue from contracts with customers	$	761	$	—	$	—	$	—	$	—	$	170	$	—	$	598
Commercial Renewables
Revenue from contracts with customers	$	54	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Other
Revenue from contracts with customers	$	6	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Total revenue from contracts with customers	$	6,094	$	1,739	$	2,479	$	1,386	$	1,093	$	535	$	737	$	598
Other revenue sources(a)	$	56	$	(23)	$	26	$	15	$	8	$	(3)	$	8	$	8
Total revenues	$	6,150	$	1,716	$	2,505	$	1,401	$	1,101	$	532	$	745	$	606

(a)Other revenue sources include revenues from leases, derivatives and alternative revenue programs that are not considered revenues from contracts with customers. Alternative revenue programs in certain jurisdictions include regulatory mechanisms that periodically adjust for over or under collection of related revenues.

Duke Energy adopted the new guidance for credit losses effective January 1, 2020, using the modified retrospective method of adoption, which does not require restatement of prior year reported results. The following table presents the reserve for credit losses for trade and other receivables based on adoption of the new standard.

	Three Months Ended March 31, 2021 and 2022
			Duke				Duke		Duke		Duke		Duke
	Duke		Energy		Progress		Energy		Energy		Energy		Energy
(in millions)	Energy		Carolinas		Energy		Progress		Florida		Ohio		Indiana		Piedmont
Balance at December 31, 2020	$	146	$	23	$	37	$	23	$	14	$	4	$	3	$	12
Write-Offs	(21)		(8)		(10)		(5)		(5)		—		—		(1)
Credit Loss Expense	17		10		7		2		5		—		—		3
Other Adjustments	5		9		3		3		1		—		—		—
Balance at March 31, 2021	$	147	$	34	$	37	$	23	$	15	$	4	$	3	$	14
Balance at December 31, 2021	$	122	$	42	$	36	$	21	$	16	$	4	$	3	$	15
Write-Offs	(23)		(9)		(10)		(2)		(8)		—		—		(1)
Credit Loss Expense	24		5		12		4		8		—		—		3
Other Adjustments	17		14		13		8		5		—		—		—
Balance at March 31, 2022	$	140	$	52	$	51	$	31	$	21	$	4	$	3	$	17

76

FINANCIAL STATEMENTS REVENUE

Trade and other receivables are evaluated based on an estimate of the risk of loss over the life of the receivable and current and historical conditions using supportable assumptions. Management evaluates the risk of loss for trade and other receivables by comparing the historical write-off amounts to total revenue over a specified period. Historical loss rates are adjusted due to the impact of current conditions, as well as forecasted conditions over a reasonable time period. The calculated write-off rate can be applied to the receivable balance for which an established reserve does not already exist. Management reviews the assumptions and risk of loss periodically for trade and other receivables.

The aging of trade receivables is presented in the table below. Duke Energy considers receivables greater than 30 days outstanding past due.

	March 31, 2022
			Duke				Duke		Duke		Duke		Duke
	Duke		Energy		Progress		Energy		Energy		Energy		Energy
(in millions)	Energy		Carolinas		Energy		Progress		Florida		Ohio		Indiana		Piedmont
Unbilled Revenue(a)(b)	$	945	$	339	$	270	$	161	$	109	$	7	$	44	$	64
0-30 days	2,133		518		944		558		386		40		26		215
30-60 days	288		75		111		64		47		8		4		23
60-90 days	102		33		40		22		18		2		3		7
90+ days	274		119		77		39		38		46		9		7
Deferred Payment Arrangements(c)	136		60		61		33		28		2		—		4
Trade and Other Receivables	$	3,878	$	1,144	$	1,503	$	877	$	626	$	105	$	86	$	320

	December 31, 2021
			Duke				Duke		Duke		Duke		Duke
	Duke		Energy		Progress		Energy		Energy		Energy		Energy
(in millions)	Energy		Carolinas		Energy		Progress		Florida		Ohio		Indiana		Piedmont
Unbilled Revenue(a)(b)	$	964	$	316	$	266	$	193	$	73	$	4	$	27	$	106
0-30 days	2,104		595		800		405		393		42		51		202
30-60 days	212		77		72		44		28		4		13		12
60-90 days	88		37		41		21		20		1		1		2
90+ days	249		106		65		37		28		47		11		7
Deferred Payment Arrangements(c)	115		55		45		22		23		2		—		4
Trade and Other Receivables	$	3,732	$	1,186	$	1,289	$	722	$	565	$	100	$	103	$	333

(a)Unbilled revenues are recognized by applying customer billing rates to the estimated volumes of energy or natural gas delivered but not yet billed and are included within Receivables and Receivables of VIEs on the Condensed Consolidated Balance Sheets.

(b)Duke Energy Ohio and Duke Energy Indiana sell, on a revolving basis, nearly all of their retail accounts receivable, including receivables for unbilled revenues, to an affiliate, CRC, and account for the transfers of receivables as sales. Accordingly, the receivables sold are not reflected on the Condensed Consolidated Balance Sheets of Duke Energy Ohio and Duke Energy Indiana. See Note 11 for further information. These receivables for unbilled revenues are $63 million and $100 million for Duke Energy Ohio and Duke Energy Indiana, respectively, as of March 31, 2022, and $82 million and $121 million for Duke Energy Ohio and Duke Energy Indiana, respectively, as of December 31, 2021.

(c)Due to certain customer financial hardships created by the COVID-19 pandemic and resulting stay-at-home orders, Duke Energy permitted customers to defer payment of past-due amounts through an installment payment plan over a period of several months.

13. STOCKHOLDERS' EQUITY

Basic EPS is computed by dividing net income available to Duke Energy common stockholders, as adjusted for distributed and undistributed earnings allocated to participating securities and accumulated preferred dividends, by the weighted average number of common shares outstanding during the period. Diluted EPS is computed by dividing net income available to Duke Energy common stockholders, as adjusted for distributed and undistributed earnings allocated to participating securities and accumulated preferred dividends, by the diluted weighted average number of common shares outstanding during the period. Diluted EPS reflects the potential dilution that could occur if securities or other agreements to issue common stock, such as equity forward sale agreements, were exercised or settled. Duke Energy’s participating securities are restricted stock units that are entitled to dividends declared on Duke Energy common stock during the restricted stock unit’s vesting periods. Dividends declared on preferred stock are recorded on the Condensed Consolidated Statements of Operations as a reduction of net income to arrive at net income available to Duke Energy common stockholders. Dividends accumulated on preferred stock are an adjustment to net income used in the calculation of basic and diluted EPS.

77

FINANCIAL STATEMENTS STOCKHOLDERS' EQUITY

The following table presents Duke Energy’s basic and diluted EPS calculations, the weighted average number of common shares outstanding and common and preferred share dividends declared.

	Three Months Ended March 31,
(in millions, except per share amounts)	2022		2021
Net income available to Duke Energy common stockholders	$	818	$	953
Accumulated preferred stock dividends adjustment	12		12
Less: Impact of participating securities	1		1
Income from continuing operations available to Duke Energy common stockholders	$	829	$	964
Weighted average common shares outstanding – basic and diluted	770		769
EPS available to Duke Energy common stockholders
Basic and diluted	$	1.08	$	1.25
Potentially dilutive items excluded from the calculation(a)	2		2
Dividends declared per common share	$	0.985	$	0.965
Dividends declared on Series A preferred stock per depositary share(b)	$	0.359	$	0.359
Dividends declared on Series B preferred stock per share(c)	$	24.375	$	24.375

(a)Performance stock awards were not included in the dilutive securities calculation because the performance measures related to the awards had not been met.

(b)5.75% Series A Cumulative Redeemable Perpetual Preferred Stock dividends are payable quarterly in arrears on the 16th day of March, June, September and December. The preferred stock has a $25 liquidation preference per depositary share.

(c)4.875% Series B Fixed-Rate Reset Cumulative Redeemable Perpetual Preferred Stock dividends are payable semiannually in arrears on the 16th day of March and September. The preferred stock has a $1,000 liquidation preference per share.

14. EMPLOYEE BENEFIT PLANS

DEFINED BENEFIT RETIREMENT PLANS

Duke Energy and certain subsidiaries maintain, and the Subsidiary Registrants participate in, qualified and non-qualified, non-contributory defined benefit retirement plans. Duke Energy's policy is to fund amounts on an actuarial basis to provide assets sufficient to meet benefit payments to be paid to plan participants.

QUALIFIED PENSION PLANS

The following tables include the components of net periodic pension costs for qualified pension plans.

	Three Months Ended March 31, 2022
			Duke				Duke		Duke		Duke		Duke
	Duke		Energy		Progress		Energy		Energy		Energy		Energy
(in millions)	Energy		Carolinas		Energy		Progress		Florida		Ohio		Indiana		Piedmont
Service cost	$	40	$	12	$	12	$	7	$	4	$	1	$	2	$	1
Interest cost on projected benefit obligation	58		14		18		8		10		3		5		2
Expected return on plan assets	(140)		(38)		(46)		(22)		(24)		(5)		(9)		(6)
Amortization of actuarial loss	24		5		6		3		3		1		2		2
Amortization of prior service credit	(5)		(1)		—		—		—		—		—		(2)
Amortization of settlement charges	2		1		1		—		—		—		—		—
Net periodic pension costs	$	(21)	$	(7)	$	(9)	$	(4)	$	(7)	$	—	$	—	$	(3)

	Three Months Ended March 31, 2021
			Duke				Duke		Duke		Duke		Duke
	Duke		Energy		Progress		Energy		Energy		Energy		Energy
(in millions)	Energy		Carolinas		Energy		Progress		Florida		Ohio		Indiana		Piedmont
Service cost	$	44	$	14	$	13	$	7	$	5	$	1	$	2	$	1
Interest cost on projected benefit obligation	55		13		17		7		10		3		5		2
Expected return on plan assets	(139)		(35)		(47)		(21)		(26)		(7)		(10)		(5)
Amortization of actuarial loss	33		7		10		5		5		2		3		2
Amortization of prior service credit	(7)		(2)		(1)		—		—		—		—		(1)
Amortization of settlement charges	2		1		1		—		—		—		—		—
Net periodic pension costs	$	(12)	$	(2)	$	(7)	$	(2)	$	(6)	$	(1)	$	—	$	(1)

78

FINANCIAL STATEMENTS EMPLOYEE BENEFIT PLANS

NON-QUALIFIED PENSION PLANS

Net periodic pension costs for non-qualified pension plans were not material for the three months ended March 31, 2022, and 2021.

OTHER POST-RETIREMENT BENEFIT PLANS

Net periodic costs for OPEB plans were not material for the three months ended March 31, 2022, and 2021.

15. INCOME TAXES

EFFECTIVE TAX RATES

The ETRs from continuing operations for each of the Duke Energy Registrants are included in the following table.

	Three Months Ended
	March 31,
	2022		2021
Duke Energy	(1.7)	%	8.2	%
Duke Energy Carolinas	7.4	%	6.9	%
Progress Energy	15.9	%	12.9	%
Duke Energy Progress	14.0	%	8.3	%
Duke Energy Florida	20.1	%	19.3	%
Duke Energy Ohio	(266.7)	%	13.3	%
Duke Energy Indiana	31.9	%	17.6	%
Piedmont	13.4	%	11.4	%

The decrease in the ETR for Duke Energy for the three months ended March 31, 2022, was primarily due to an increase in the amortization of excess deferred taxes related to the Duke Energy Ohio MGP Settlement.

The increase in the ETR for Progress Energy for the three months ended March 31, 2022, was primarily due to a decrease in the amortization of excess deferred taxes.

The increase in the ETR for Duke Energy Progress for the three months ended March 31, 2022, was primarily due to a decrease in the amortization of excess deferred taxes.

The decrease in the ETR for Duke Energy Ohio for the three months ended March 31, 2022, was primarily due to an increase in the amortization of excess deferred taxes related to the MGP Settlement.

The increase in the ETR for Duke Energy Indiana for the three months ended March 31, 2022, was primarily due to the coal ash impairment based on the Indiana Supreme Court Opinion.

The increase in the ETR for Piedmont for the three months ended March 31, 2022, was primarily due to a decrease in the amortization of excess deferred taxes.

16. SUBSEQUENT EVENTS

For information on subsequent events related to regulatory matters, and commitments and contingencies, see Notes 3 and 4.

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ITEM 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

The following combined Management’s Discussion and Analysis of Financial Condition and Results of Operations is separately filed by Duke Energy and Duke Energy Carolinas, Progress Energy, Duke Energy Progress, Duke Energy Florida, Duke Energy Ohio, Duke Energy Indiana and Piedmont. However, none of the registrants make any representation as to information related solely to Duke Energy or the Subsidiary Registrants of Duke Energy other than itself.

DUKE ENERGY

Duke Energy is an energy company headquartered in Charlotte, North Carolina. Duke Energy operates in the U.S. primarily through its subsidiaries, Duke Energy Carolinas, Duke Energy Progress, Duke Energy Florida, Duke Energy Ohio, Duke Energy Indiana and Piedmont. When discussing Duke Energy’s consolidated financial information, it necessarily includes the results of the Subsidiary Registrants, which along with Duke Energy are collectively referred to as the Duke Energy Registrants.

Management’s Discussion and Analysis should be read in conjunction with the Condensed Consolidated Financial Statements and Notes for the three months ended March 31, 2022, and with Duke Energy’s Annual Report on Form 10-K for the year ended December 31, 2021.

Executive Overview

Advancing Our Clean Energy Transformation

During the first quarter, we continued to execute on our clean energy transformation, delivering strong, sustainable value for shareholders, customers, communities and employees.

•We’re targeting energy generated from coal to represent less than 5% by 2030 and a full exit by 2035, subject to regulatory approvals. We’ve made strong progress in reducing carbon emissions from electricity generation (a 44% reduction from 2005) and have committed to do more (at least 50% reduction by 2030 and net-zero by 2050).

•We continued to execute financings under our Sustainable Financing Framework, raising approximately $2 billion during the quarter under the structure, with proceeds being allocated to eligible projects such as electric grid investments that support the deployment of renewables, new solar generation and battery storage, storm hardening and electric vehicle infrastructure, as well as expenditures that enable opportunities for diverse and small businesses.

Regulatory Activity. During the first quarter of 2022, we continued to monitor developments while moving our regulatory strategy forward. See Note 3 to the Condensed Consolidated Financial Statements, "Regulatory Matters," for additional information.

•In April 2022, the MGP Settlement was approved without modification by the PUCO. The MGP Settlement resolved certain issues related to MGP remediation costs and the Tax Act as it related to Duke Energy Ohio’s natural gas operations.

•In April 2022, Piedmont Natural Gas filed a request with the South Carolina Public Service Commission to recover recent capital investments and update its operating costs and billing rates through a general rate case proceeding.

•In March 2022, the Indiana Supreme Court issued an opinion, which absent IURC preapproval of deferred accounting treatment determined DEI could not recover coal ash closure costs incurred between base rate cases. In connection with the rate case application filed in Indiana in 2019 by Duke Energy Indiana, the IURC issued an order in June 2020, which among other things provided for recovery of approximately $211 million of certain coal ash closure costs incurred by DEI prior to the IURC Order. The Court remanded the matter back to the IURC for proceedings consistent with the opinion. Duke Energy Indiana filed a request for rehearing with the Supreme Court on April 11, 2022.

•In February 2022, the NCUC adopted rules to govern the application and review process for the PBR authorized under HB 951. In April 2022, the NCUC adopted rules to govern the securitization of 50% of the North Carolina retail portion of the remaining net book value of retiring coal plants pursuant to HB 951. The rules are constructive and consistent with the policy objectives of HB 951. We remain engaged in next steps including developing an initial carbon reduction plan.

•In January 2022, the NCUC issued an order approving the stipulation of partial settlement related to the 2021 Piedmont North Carolina Rate Case, which included a base rate increase of $67 million, subject to completion of the Robeson County LNG facility and the Pender Onslow County expansion project.

Matters Impacting Future Results

The matters discussed herein could materially impact the future operating results, financial condition and cash flows of the Duke Energy Registrants and Business Segments.

Regulatory Matters

Coal Ash Costs

Future spending of coal ash costs, including amounts recorded for depreciation and liability accretion, is expected to continue to be deferred and recovered in future rate cases or rider filings. The majority of spend is expected to occur over the next 15-20 years.

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MD&A MATTERS IMPACTING FUTURE RESULTS

Duke Energy Indiana has interpreted the CCR rule to identify the coal ash basin sites impacted and has assessed the amounts of coal ash subject to the rule and a method of compliance. In 2020, the Hoosier Environmental Council filed a petition challenging the Indiana Department of Environmental Management's (IDEM) partial approval of five of Duke Energy Indiana’s ash pond site closure plans at Gallagher Station. The petition does not challenge the other basin closures approved by IDEM at other Indiana stations. Interpretation of the requirements of the CCR rule is subject to further legal challenges and regulatory approvals, which could result in additional ash basin closure requirements, higher costs of compliance and greater AROs. Additionally, Duke Energy Indiana has retired facilities that are not subject to the CCR rule. Duke Energy Indiana may incur costs at these facilities to comply with environmental regulations or to mitigate risks associated with on-site storage of coal ash. In January 2022, Duke Energy Indiana received a letter from the EPA regarding interpretation of the CCR rule. See Note 4 to the Condensed Consolidated Financial Statements, "Commitments and Contingencies" for more information.

Commercial Renewables

Duke Energy continues to monitor recoverability of renewable merchant plants located in the ERCOT West market and in the PJM West market, due to fluctuating market pricing and long-term forecasted energy prices. Based on the most recent recoverability test, the carrying value approximated the aggregate estimated future undiscounted cash flows for the assets under review. A continued decline in energy market pricing or other factors unfavorably impacting the economics would likely result in a future impairment. Impairment of these assets could result in adverse impacts. For additional information, see Note 2 to the Condensed Consolidated Financial Statements, "Business Segments."

In February 2021, a severe winter storm impacted certain Commercial Renewables assets in Texas. Extreme weather conditions limited the ability for these solar and wind facilities to generate and sell electricity into the ERCOT market. Duke Energy has been named in multiple lawsuits arising out of this winter storm. For more information, see Note 4 to the Condensed Consolidated Financial Statements, "Commitments and Contingencies."

Supply Chain

Duke Energy is monitoring supply chain disruptions, including the cost and availability of key components of planned generating facilities, which could impact the timing of in-service or economics of renewable projects and may result in adverse impacts on operating results. The Company is also monitoring the impacts on future financial results and clean energy goals due to the availability of solar panels as a result of the U.S. Department of Commerce investigation into the potential circumvention of anti-dumping and countervailing duties by certain Chinese companies.

Results of Operations

Non-GAAP Measures

Management’s Discussion and Analysis includes financial information prepared in accordance with GAAP in the U.S., as well as certain non-GAAP financial measures such as adjusted earnings and adjusted EPS discussed below. Generally, a non-GAAP financial measure is a numerical measure of financial performance, financial position or cash flows that excludes (or includes) amounts that are included in (or excluded from) the most directly comparable measure calculated and presented in accordance with GAAP. Non-GAAP financial measures should be viewed as a supplement to, and not a substitute for, financial measures presented in accordance with GAAP. Non-GAAP measures presented may not be comparable to similarly titled measures used by other companies because other companies may not calculate the measures in the same manner.

Management evaluates financial performance in part based on non-GAAP financial measures, including adjusted earnings and adjusted EPS. Adjusted earnings and adjusted EPS represent income from continuing operations available to Duke Energy Corporation common stockholders in dollar and per share amounts, adjusted for the dollar and per share impact of special items. As discussed below, special items represent certain charges and credits, which management believes are not indicative of Duke Energy's ongoing performance. The most directly comparable GAAP measures for adjusted earnings and adjusted EPS are GAAP Reported Earnings (Loss) and GAAP Reported Earnings (Loss) Per Share, respectively.

Special items included in the periods presented below include the following, which management believes do not reflect ongoing costs:

•Regulatory Matters represents the net impact of charges related to the 2022 Indiana Supreme Court ruling on coal ash.

•Gas Pipeline Investments represents additional exit obligations related to ACP.

Three Months Ended March 31, 2022, as compared to March 31, 2021

GAAP reported EPS was $1.08 for the first quarter of 2022 compared to a $1.25 in the first quarter of 2021. In addition to the drivers below, GAAP reported EPS decreased primarily due to charges related to the Indiana Supreme Court ruling on coal ash.

As discussed above, management also evaluates financial performance based on adjusted EPS. Duke Energy’s first quarter 2022 adjusted EPS was $1.30 compared to $1.26 for the first quarter of 2021. The increase in adjusted EPS was primarily due to higher volumes, partially offset by higher operation and maintenance expense, including storm costs, and lower returns on benefit trusts.

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MD&A DUKE ENERGY

The following table reconciles non-GAAP measures, including adjusted EPS, to their most directly comparable GAAP measures.

	Three Months Ended March 31,
	2022				2021
(in millions, except per share amounts)	Earnings		EPS		Earnings		EPS
GAAP Reported Earnings/GAAP Reported EPS	$	818	$	1.08	$	953	$	1.25
Adjustments:
Regulatory Matters(a)	173		0.22		—		—
Gas Pipeline Investments(b)	—		—		5		0.01
Adjusted Earnings/Adjusted EPS	$	991	$	1.30	$	958	$	1.26

(a)Net of tax benefit of $62 million and $22 million in noncontrolling interests.

(b)Net of tax benefit of $1 million.

SEGMENT RESULTS

The remaining information presented in this discussion of results of operations is on a GAAP basis. Management evaluates segment performance based on segment income. Segment income is defined as income from continuing operations net of income attributable to noncontrolling interests and preferred stock dividends. Segment income includes intercompany revenues and expenses that are eliminated in the Condensed Consolidated Financial Statements.

Duke Energy's segment structure includes the following segments: Electric Utilities and Infrastructure, Gas Utilities and Infrastructure and Commercial Renewables. The remainder of Duke Energy’s operations is presented as Other. See Note 2 to the Condensed Consolidated Financial Statements, “Business Segments,” for additional information on Duke Energy’s segment structure.

Electric Utilities and Infrastructure

	Three Months Ended March 31,
(in millions)	2022		2021		Variance
Operating Revenues	$	6,002	$	5,281	$	721
Operating Expenses
Fuel used in electric generation and purchased power	1,837		1,462		375
Operation, maintenance and other	1,426		1,282		144
Depreciation and amortization	1,131		1,057		74
Property and other taxes	337		311		26
Impairment of assets and other charges	214		—		214
Total operating expenses	4,945		4,112		833
Gains on Sales of Other Assets and Other, net	2		—		2
Operating Income	1,059		1,169		(110)
Other Income and Expenses, net	114		104		10
Interest Expense	376		340		36
Income Before Income Taxes	797		933		(136)
Income Tax Expense	83		113		(30)
Add: Loss Attributable to Noncontrolling Interest	9		—		9
Segment Income	$	723	$	820	$	(97)
Duke Energy Carolinas GWh sales	22,549		21,962		587
Duke Energy Progress GWh sales	17,969		16,537		1,432
Duke Energy Florida GWh sales	9,902		8,554		1,348
Duke Energy Ohio GWh sales	5,997		6,004		(7)
Duke Energy Indiana GWh sales	7,950		7,726		224
Total Electric Utilities and Infrastructure GWh sales	64,367		60,783		3,584
Net proportional MW capacity in operation	49,340		50,026		(686)

Three Months Ended March 31, 2022, as compared to March 31, 2021

Electric Utilities and Infrastructure’s lower segment income is due to the Indiana Supreme Court ruling on recovery of certain coal ash costs and higher storm costs, partially offset by higher retail sales volumes. The following is a detailed discussion of the variance drivers by line item.

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MD&A SEGMENT RESULTS — ELECTRIC UTILITIES AND INFRASTRUCTURE

Operating Revenues. The variance was driven primarily by:

•a $266 million increase in fuel revenues primarily due to higher fuel prices and retail sales volumes;

•a $243 million increase in weather-normal retail sales volumes;

•a $126 million increase in retail base rate pricing due to general rate cases in North Carolina, net of rider impacts as well as multiyear rate adjustments in Florida; and

•a $46 million increase in wholesale revenues primarily due to higher capacity volumes.

Partially offset by

•a $46 million decrease due to the Indiana Supreme Court ruling on recovery of certain coal ash costs.

Operating Expenses. The variance was driven primarily by:

•a $375 million increase in fuel used in electric generation and purchased power due to higher fuel prices and volumes from customer demand;

•a $214 million increase in impairment of assets and other charges primarily due to the Indiana Supreme Court ruling on recovery of certain coal ash costs;

•a $144 million increase in operation, maintenance and other primarily driven by higher storm costs and higher outage and maintenance costs;

•a $74 million increase in depreciation and amortization primarily due to higher plant in service and resolution of prior year rate cases, partially offset by lower depreciation related to the extension of the lives of nuclear facilities; and

•a $26 million increase in property and other taxes primarily due to higher payroll taxes due to CARES Act employee retention credits in the prior year, increased property tax as well as higher revenue related taxes.

Interest Expense. The variance was primarily driven by interest expense on excess deferred tax liabilities.

Income Tax Expense. The decrease in tax expense was primarily due to a decrease in pretax income. The ETRs for the three months ended March 31, 2022, and 2021, were 10.4% and 12.1%, respectively. The decrease in the ETR was primarily due to the amortization of excess deferred taxes in relation to lower pretax income.

Gas Utilities and Infrastructure

	Three Months Ended March 31,
(in millions)	2022		2021		Variance
Operating Revenues	$	1,032	$	775	$	257
Operating Expenses
Cost of natural gas	481		276		205
Operation, maintenance and other	182		102		80
Depreciation and amortization	79		68		11
Property and other taxes	41		35		6
Total operating expenses	783		481		302
Operating Income	249		294		(45)
Other Income and Expenses, Net	17		17		—
Interest Expense	40		33		7
Income Before Income Taxes	226		278		(52)
Income Tax (Benefit) Expense	(28)		33		(61)
Segment Income	$	254	$	245	$	9
Piedmont LDC throughput (dekatherms)	180,187,101		149,626,582		30,560,519
Duke Energy Midwest LDC throughput (Mcf)	37,246,072		37,109,003		137,069

Three Months Ended March 31, 2022, as compared to March 31, 2021

Gas Utilities and Infrastructure’s results were impacted primarily by margin growth. The following is a detailed discussion of the variance drivers by line item.

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MD&A SEGMENT RESULTS — GAS UTILITIES AND INFRASTRUCTURE

Operating Revenues. The variance was driven primarily by:

•a $205 million increase due to higher natural gas costs passed through to customers and increased off-system sales natural gas costs, partially offset by lower residential volumes;

•a $35 million increase due to base rate increases;

•a $7 million increase due to rider revenues related to Ohio Capital Expenditure Program (CEP); and

•a $6 million increase due to customer growth.

Partially offset by:

•a $15 million decrease due to the MGP settlement.

Operating Expenses. The variance was driven primarily by:

•a $205 million increase in cost of natural gas due to higher natural gas costs passed through to customers and increased off-system sales natural gas costs, partially offset by lower residential volumes;

•an $80 million increase in operation, maintenance and other primarily due to the MGP settlement; and

•an $11 million increase in depreciation and amortization due to additional plant in service and lower CEP deferrals.

Income Tax Benefit. The decrease in tax expense was primarily due to an increase in the amortization of excess deferred taxes related to the Ohio MGP Settlement and a decrease in pretax income. The ETRs for the three months ended March 31, 2022, and 2021, were -12.4% and 11.9%, respectively. The decrease in the ETR was primarily due to an increase in the amortization of excess deferred taxes related to the Ohio MGP Settlement.

Commercial Renewables

	Three Months Ended March 31,
(in millions)	2022		2021		Variance
Operating Revenues	$	121	$	119	$	2
Operating Expenses
Operation, maintenance and other	82		72		10
Depreciation and amortization	60		53		7
Property and other taxes	10		9		1
Total operating expenses	152		134		18
Losses on Sales of Other Assets and Other, net	(1)		—		(1)
Operating Loss	(32)		(15)		(17)
Other Income and Expenses, net	—		(25)		25
Interest Expense	18		13		5
Loss Before Income Taxes	(50)		(53)		3
Income Tax Benefit	(33)		(29)		(4)
Add: Loss Attributable to Noncontrolling Interests	28		51		(23)
Segment Income	$	11	$	27	$	(16)
Renewable plant production, GWh	2,988		2,588		400
Net proportional MW capacity in operation(a)	4,753		4,294		459

(a)Certain projects are included in tax equity structures where investors have differing interests in the project's economic attributes. One hundred percent of the tax equity project's capacity is included in the table above.

Three Months Ended March 31, 2022, as compared to March 31, 2021

Commercial Renewables' results were unfavorable primarily driven by fewer project investments financed by tax equity being placed into service in the current year and higher operating expenses for projects placed in service since the prior year, offset by the impacts for losses experienced in the prior year from Texas Storm Uri.

Operating Expenses. The variance was primarily driven by a $14 million increase for higher operating expenses, depreciation, property tax expense, and other development costs from the growth of new projects and a $4 million increase for higher operating expenses attributed to maintenance and other operating expenses.

Other Income and Expenses, net. The increase was primarily due to $29 million of losses experienced in the prior year from Texas Storm Uri offset by approximately $5 million decrease in equity earnings.

Interest Expense. The increase is primarily due to a $4 million gain recorded in the prior year for an interest rate swap that did not qualify for hedge accounting.

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MD&A SEGMENT RESULTS — COMMERCIAL RENEWABLES

Income Tax Benefit. The increase in the tax benefit was primarily due to a decrease in taxes associated with tax equity investments.

Loss Attributable to Noncontrolling Interests. The variance was driven by a $23 million decrease for fewer projects placed in service financed with tax equity in the current year and a $12 million net decrease in losses allocated to tax equity members from existing tax equity structures offset by a $12 million increase for losses experienced in the prior year from Texas Storm Uri.

Other

	Three Months Ended March 31,
(in millions)	2022		2021		Variance
Operating Revenues	$	30	$	26	$	4
Operating Expenses	33		28		5
Gains on Sales of Other Assets and Other, net	1		—		1
Operating Loss	(2)		(2)		—
Other Income and Expenses, net	(6)		21		(27)
Interest Expense	159		151		8
Loss Before Income Taxes	(167)		(132)		(35)
Income Tax Benefit	(36)		(32)		(4)
Less: Preferred Dividends	39		39		—
Net Loss	$	(170)	$	(139)	$	(31)

Three Months Ended March 31, 2022, as compared to March 31, 2021

The higher net loss was driven by lower return on investments and higher interest expense partially offset by higher equity earnings from the NMC investment.

Other Income and Expenses, net. The variance was primarily due to lower return on investments that fund certain employee benefit obligations partially offset by higher equity earnings from the NMC investment.

Interest Expense. The variance was primarily due to higher outstanding long-term debt.

Income Tax Benefit. The increase in the tax benefit was primarily due to an increase in pretax losses, partially offset by unfavorable tax impacts related to lower investment returns on certain employee benefit obligations. The ETRs for the three months ended March 31, 2022, and 2021, were 21.6% and 24.2%, respectively. The decrease in the ETR was primarily due to unfavorable tax impacts related to lower investment returns on certain employee benefit obligations.

DUKE ENERGY CAROLINAS

Results of Operations

	Three Months Ended March 31,
(in millions)	2022		2021		Variance
Operating Revenues	$	1,888	$	1,716	$	172
Operating Expenses
Fuel used in electric generation and purchased power	448		422		26
Operation, maintenance and other	512		441		71
Depreciation and amortization	379		359		20
Property and other taxes	93		83		10
Impairment of assets and other charges	3		—		3
Total operating expenses	1,435		1,305		130
Operating Income	453		411		42
Other Income and Expenses, net	55		48		7
Interest Expense	141		124		17
Income Before Income Taxes	367		335		32
Income Tax Expense	27		23		4
Net Income	$	340	$	312	$	28

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MD&A DUKE ENERGY CAROLINAS

The following table shows the percent changes in GWh sales and average number of customers. The percentages for retail customer classes represent billed sales only. Total sales includes billed and unbilled retail sales and wholesale sales to incorporated municipalities, public and private utilities and power marketers. Amounts are not weather-normalized.

Increase (Decrease) over prior year	2022
Residential sales	(3.6)	%
General service sales	4.2	%
Industrial sales	4.7	%
Wholesale power sales	(4.6)	%
Joint dispatch sales	(30.0)	%
Total sales	2.7	%
Average number of customers	2.0	%

Three Months Ended March 31, 2022, as compared to March 31, 2021

Operating Revenues. The variance was driven primarily by:

•a $99 million increase in weather-normal retail sales volumes;

•a $31 million increase in fuel revenues due to higher prices and volumes in the current year; and

•a $20 million increase due to higher pricing from the North Carolina retail rate case, net of a return of EDIT to customers.

Operating Expenses. The variance was driven primarily by:

•a $71 million increase in operation, maintenance and other expense primarily due to higher storm restoration costs and higher outage and maintenance costs;

•a $26 million increase in fuel used in electric generation and purchased power primarily due to higher natural gas prices and changes in the generation mix, partially offset by the recovery of fuel expenses and lower coal prices; and

•a $20 million increase in depreciation and amortization primarily due to an increase in assets placed into service, and new depreciation rates associated with the North Carolina rate case, partially offset by the extension of the lives of nuclear facilities.

Interest Expense. The variance was driven by interest expense on excess deferred tax liabilities.

Income Tax Expense. The increase in tax expense was primarily due to an increase in pretax income, partially offset by amortization of excess deferred taxes.

PROGRESS ENERGY

Results of Operations

	Three Months Ended March 31,
(in millions)	2022		2021		Variance
Operating Revenues	$	2,992	$	2,505	$	487
Operating Expenses
Fuel used in electric generation and purchased power	1,064		795		269
Operation, maintenance and other	645		601		44
Depreciation and amortization	536		485		51
Property and other taxes	152		142		10
Total operating expenses	2,397		2,023		374
Gains on Sales of Other Assets and Other, net	2		—		2
Operating Income	597		482		115
Other Income and Expenses, net	35		43		(8)
Interest Expense	211		192		19
Income Before Income Taxes	421		333		88
Income Tax Expense	67		43		24
Net Income	354		290		64

Three Months Ended March 31, 2022, as compared to March 31, 2021

Operating Revenues. The variance was driven primarily by:

•a $237 million increase in fuel cost recovery driven by higher fuel prices and volumes in the current year;

•a $124 million increase in weather-normal retail sales volumes;

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MD&A PROGRESS ENERGY

•a $106 million increase in retail pricing due to the North Carolina rate case and base rate adjustments at Duke Energy Florida related to annual increases from the 2021 Settlement Agreement and the solar base rate adjustment; and

•a $32 million increase in wholesale revenues, net of fuel, due to higher capacity volumes.

Partially offset by:

•a $22 million decrease in capacity revenue primarily due to accelerated recovery of retired Crystal River coal units in 2021.

Operating Expenses. The variance was driven primarily by:

•a $269 million increase in fuel used in electric generation and purchased power primarily due to higher demand and higher natural gas prices;

•a $51 million increase in depreciation and amortization primarily due to increased rates at Duke Energy Florida and higher amortization of deferred coal ash and storm costs at Duke Energy Progress, partially offset by the extension of the lives at nuclear facilities at Duke Energy Progress; and

•a $44 million increase in operation, maintenance and other expense primarily due to higher storm costs at Duke Energy Progress.

Interest Expense. The variance was driven primarily by interest expense on excess deferred tax liabilities and higher outstanding debt at Duke Energy Progress.

Income Tax Expense. The increase in tax expense was primarily due to an increase in pretax income and a decrease in the amortization of excess deferred taxes.

DUKE ENERGY PROGRESS

Results of Operations

	Three Months Ended March 31,
(in millions)	2022		2021		Variance
Operating Revenues	$	1,632	$	1,401	$	231
Operating Expenses
Fuel used in electric generation and purchased power	574		436		138
Operation, maintenance and other	391		357		34
Depreciation and amortization	306		285		21
Property and other taxes	49		49		—
Total operating expenses	1,320		1,127		193
Gains on Sales of Other Assets and Other, net	1		—		1
Operating Income	313		274		39
Other Income and Expenses, net	22		24		(2)
Interest Expense	85		69		16
Income Before Income Taxes	250		229		21
Income Tax Expense	35		19		16
Net Income	$	215	$	210	$	5

The following table shows the percent changes in GWh sales and average number of customers. The percentages for retail customer classes represent billed sales only. Total sales includes billed and unbilled retail sales and wholesale sales to incorporated municipalities, public and private utilities and power marketers. Amounts are not weather-normalized.

Increase (Decrease) over prior period	2022
Residential sales	(4.5)	%
General service sales	10.3	%
Industrial sales	27.8	%
Wholesale power sales	1.0	%
Joint dispatch sales	51.4	%
Total sales	8.7	%
Average number of customers	2.0	%

Three Months Ended March 31, 2022, as compared to March 31, 2021

Operating Revenues. The variance was driven primarily by:

•a $120 million increase in fuel cost recovery driven by higher fuel prices and volumes in the current year;

•a $56 million increase due to higher pricing from the North Carolina retail rate case, net of a return of EDIT to customers;

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MD&A DUKE ENERGY PROGRESS

•a $33 million increase in weather-normal retail sales volumes in the current year; and

•a $16 million increase in wholesale revenues, net of fuel, due to higher capacity volumes.

Operating Expenses. The variance was driven primarily by:

•a $138 million increase in fuel used in electric generation and purchased power primarily due to higher natural gas prices and changes in the generation mix, partially offset by the recovery of fuel expenses and lower coal prices;

•a $34 million increase in operation, maintenance and other expense primarily due to higher storm costs; and

•a $21 million increase in depreciation and amortization due to higher amortization of deferred coal ash costs and amortization related to deferred storm costs, partially offset by lower depreciation related to the extension of the lives of nuclear facilities.

Interest Expense. The variance was driven primarily by interest expense on excess deferred tax liabilities and higher outstanding debt.

Income Tax Expense. The increase in tax expense was primarily due to an increase in pretax income and the amortization of excess deferred taxes.

DUKE ENERGY FLORIDA

Results of Operations

	Three Months Ended March 31,
(in millions)	2022		2021		Variance
Operating Revenues	$	1,355	$	1,101	$	254
Operating Expenses
Fuel used in electric generation and purchased power	490		359		131
Operation, maintenance and other	249		242		7
Depreciation and amortization	231		200		31
Property and other taxes	103		93		10
Total operating expenses	1,073		894		179
Gains on Sales of Other Assets and Other, net	1		—		1
Operating Income	283		207		76
Other Income and Expenses, net	15		18		(3)
Interest Expense	84		80		4
Income Before Income Taxes	214		145		69
Income Tax Expense	43		28		15
Net Income	$	171	$	117	$	54

The following table shows the percent changes in GWh sales and average number of customers. The percentages for retail customer classes represent billed sales only. Wholesale power sales include both billed and unbilled sales. Total sales includes billed and unbilled retail sales and wholesale sales to incorporated municipalities, public and private utilities and power marketers. Amounts are not weather-normalized.

Increase (Decrease) over prior period	2022
Residential sales	0.9	%
General service sales	4.0	%
Industrial sales	(0.9)	%
Wholesale and other	77.4	%
Total sales	15.8	%
Average number of customers	1.9	%

Three Months Ended March 31, 2022, as compared to March 31, 2021

Operating Revenues. The variance was driven primarily by:

•a $117 million increase in fuel revenue primarily due to higher retail sales volumes and higher fuel rate in current year in response to an increase in natural gas prices;

•a $91 million increase in weather-normal retail sales volumes;

•a $50 million increase in retail pricing due to base rate adjustments related to annual increases from the 2021 Settlement Agreement and the solar base rate adjustment; and

•a $16 million increase in wholesale power revenues, net of fuel, primarily due to higher capacity revenues and bulk power sales.

Partially offset by:

•a $22 million decrease in capacity revenue primarily due to accelerated recovery of the retired coal units Crystal River 1 and 2 in 2021.

88

MD&A DUKE ENERGY FLORIDA

Operating Expenses. The variance was driven primarily by:

•a $131 million increase in fuel used in electric generation and purchased power primarily due to higher natural gas prices;

•a $31 million increase in depreciation and amortization primarily due to an increase in depreciation rates starting in January 2022; and

•a $10 million increase in property and other taxes primarily due to an increase in gross receipts taxes.

Income Tax Expense. The increase in tax expense was primarily due to an increase in pretax income.

DUKE ENERGY OHIO

Results of Operations

	Three Months Ended March 31,
(in millions)	2022		2021		Variance
Operating Revenues
Regulated electric	$	412	$	363	$	49
Regulated natural gas	226		169		57
Total operating revenues	638		532		106
Operating Expenses
Fuel used in electric generation and purchased power	127		82		45
Cost of natural gas	107		51		56
Operation, maintenance and other	178		108		70
Depreciation and amortization	80		74		6
Property and other taxes	101		92		9
Total operating expenses	593		407		186
Operating Income	45		125		(80)
Other Income and Expenses, net	6		5		1
Interest Expense	30		25		5
Income Before Income Taxes	21		105		(84)
Income Tax (Benefit) Expense	(56)		14		(70)
Net Income	$	77	$	91	$	(14)

The following table shows the percent changes in GWh sales of electricity, dekatherms of natural gas delivered and average number of electric and natural gas customers. The percentages for retail customer classes represent billed sales only. Total sales includes billed and unbilled retail sales and wholesale sales to incorporated municipalities, public and private utilities and power marketers. Amounts are not weather-normalized.

	Electric		Natural Gas
Increase (Decrease) over prior year	2022		2022
Residential sales	(4.9)	%	1.5	%
General service sales	(1.0)	%	1.0	%
Industrial sales	(2.9)	%	(2.3)	%
Wholesale electric power sales	(19.0)	%	n/a
Other natural gas sales	n/a		(2.8)	%
Total sales	(0.1)	%	0.4	%
Average number of customers	1.0	%	0.8	%

Three Months Ended March 31, 2022, as compared to March 31, 2021

Operating Revenues. The variance was driven primarily by:

•a $93 million increase in fuel related revenues primarily due to higher natural gas prices and increased volumes;

•a $10 million increase in retail revenue riders, primarily due to the Ohio Capital Expenditure Program (CEP), Distribution Capital Investment Rider (DCI), excise tax riders as a result of increased revenue and Kentucky Gas Weather Normalization rider, partially offset by decreases in Kentucky Environmental Surcharge Mechanism and the Ohio Tax Cuts and Jobs Act rider;

•a $9 million increase in weather-normal retail sales volumes;

•a $6 million increase in revenues related to OVEC collections and OVEC sales into PJM; and

•a $5 million increase in PJM transmission revenues as a result of increased capital spend.

Partially offset by:

•a $15 million decrease due to the MGP settlement.

89

MD&A DUKE ENERGY OHIO

Operating Expenses. The variance was driven primarily by:

•a $101 million increase in fuel expense primarily driven by higher retail prices and increased volumes for natural gas and purchased power;

•a $70 million increase in operation, maintenance and other expense primarily due to the MGP settlement and higher storm costs;

•a $9 million increase in property and other taxes primarily due to increased plant in service, higher kilowatt and natural gas distribution taxes due to increased usage and a lower Network Integration Transmission Service tax deferral; and

•a $6 million increase in depreciation and amortization primarily driven by lower CEP deferrals and an increase in distribution plant in service.

Income Tax Benefit. The decrease in tax expense was primarily due to an increase in the amortization of excess deferred taxes related to the MGP Settlement and a decrease in pretax income.

DUKE ENERGY INDIANA

Results of Operations

	Three Months Ended March 31,
(in millions)	2022		2021		Variance
Operating Revenues	$	822	$	745	$	77
Operating Expenses
Fuel used in electric generation and purchased power	319		217		102
Operation, maintenance and other	192		178		14
Depreciation and amortization	156		152		4
Property and other taxes	25		21		4
Impairment of assets and other charges	211		—		211
Total operating expenses	903		568		335
Operating (Loss) Income	(81)		177		(258)
Other Income and Expenses, net	10		9		1
Interest Expense	45		50		(5)
(Loss) Income Before Income Taxes	(116)		136		(252)
Income Tax (Benefit) Expense	(37)		24		(61)
Net (Loss) Income	$	(79)	$	112	$	(191)

The following table shows the percent changes in GWh sales and average number of customers. The percentages for retail customer classes represent billed sales only. Total sales includes billed and unbilled retail sales and wholesale sales to incorporated municipalities, public and private utilities and power marketers. Amounts are not weather-normalized.

Increase (Decrease) over prior year	2022
Residential sales	(3.8)	%
General service sales	0.3	%
Industrial sales	(5.3)	%
Wholesale power sales	11.9	%
Total sales	2.9	%
Average number of customers	1.3	%

Three Months Ended March 31, 2022, as compared to March 31, 2021

Operating Revenues. The variance was driven primarily by:

•a $77 million increase in fuel revenues primarily due to higher fuel cost recovery driven by customer demand and fuel prices;

•a $16 million increase in weather-normal retail sales volumes driven by higher nonresidential customer demand;

•a $14 million increase in wholesale revenues primarily due to an increase in BPM sharing provision; and

•a $9 million increase in retail sales due to favorable weather in the current year.

Partially offset by:

•a $46 million decrease due to the Indiana Supreme Court ruling on recovery of certain coal ash costs.

90

MD&A DUKE ENERGY INDIANA

Operating Expenses. The variance was driven primarily by:

•a $211 million increase in impairment of assets and other charges primarily due to the Indiana Supreme Court ruling on recovery of certain coal ash costs;

•a $102 million increase in fuel used in electric generation and purchased power expense primarily due to higher purchased power expense and higher natural gas costs; and

•a $14 million increase in operation, maintenance and other primarily due to higher storm costs and employee benefits.

Income Tax Benefit. The decrease in tax expense was primarily due to the change in pretax income from the coal ash impairment based on the Indiana Supreme Court Opinion.

PIEDMONT

Results of Operations

	Three Months Ended March 31,
(in millions)	2022		2021		Variance
Operating Revenues	$	805	$	606	$	199
Operating Expenses
Cost of natural gas	374		225		149
Operation, maintenance and other	95		78		17
Depreciation and amortization	54		48		6
Property and other taxes	16		14		2
Total operating expenses	539		365		174
Operating Income	266		241		25
Other Income and Expenses, net	13		17		(4)
Interest Expense	32		29		3
Income Before Income Taxes	247		229		18
Income Tax Expense	33		26		7
Net Income	$	214	$	203	$	11

The following table shows the percent changes in dekatherms delivered and average number of customers. The percentages for all throughput deliveries represent billed and unbilled sales. Amounts are not weather-normalized.

Increase (Decrease) over prior year	2022
Residential deliveries	(4.7)	%
Commercial deliveries	2.9	%
Industrial deliveries	1.1	%
Power generation deliveries	45.8	%
For resale	(3.9)	%
Total throughput deliveries	20.4	%
Secondary market volumes	18.8	%
Average number of customers	1.6	%

The margin decoupling mechanism adjusts for variations in residential and commercial use per customer, including those due to weather and conservation. The weather normalization adjustment mechanisms mostly offset the impact of weather on bills rendered, but do not ensure full recovery of approved margin during periods when winter weather is significantly warmer or colder than normal.

Three Months Ended March 31, 2022, as compared to March 31, 2021

Operating Revenues. The variance was driven primarily by:

•a $149 million increase due to higher natural gas costs passed through to customers and increased off-system sales natural gas costs, partially offset by lower residential volumes;

•a $35 million increase due to base rate increases; and

•a $6 million increase due to customer growth.

Operating Expenses. The variance was driven primarily by:

•a $149 million increase due to higher natural gas costs passed through to customers and increased off-system sales natural gas costs, partially offset by lower residential volumes.

Income Tax Expense. The increase in tax expense was primarily due to an increase in pretax income and a decrease in the amortization of excess deferred taxes.

91

MD&A LIQUIDITY AND CAPITAL RESOURCES

LIQUIDITY AND CAPITAL RESOURCES

Sources and Uses of Cash

Duke Energy relies primarily upon cash flows from operations, debt and equity issuances and its existing cash and cash equivalents to fund its liquidity and capital requirements. Duke Energy’s capital requirements arise primarily from capital and investment expenditures, repaying long-term debt and paying dividends to shareholders. Additionally, due to its existing tax attributes, Duke Energy does not expect to be a significant federal cash taxpayer until around 2030. Duke Energy’s Annual Report on Form 10-K for the year ended December 31, 2021, included a summary and detailed discussion of projected primary sources and uses of cash for 2022 to 2024.

As of March 31, 2022, Duke Energy had approximately $853 million of cash on hand and $6.1 billion available under its $9 billion Master Credit Facility. Duke Energy expects to have sufficient liquidity in the form of cash on hand, cash from operations and available credit capacity to support its funding needs. Refer to Note 5 to the Condensed Consolidated Financial Statements, "Debt and Credit Facilities," for information regarding Duke Energy's debt issuances and maturities, and available credit facilities including the Master Credit Facility.

Cash Flow Information

The following table summarizes Duke Energy’s cash flows.

	Three Months Ended
	March 31,
(in millions)	2022		2021
Cash flows provided by (used in):
Operating activities	$	1,795	$	2,088
Investing activities	(2,699)		(3,137)
Financing activities	1,404		1,185
Net increase in cash, cash equivalents and restricted cash	500		136
Cash, cash equivalents and restricted cash at beginning of period	520		556
Cash, cash equivalents and restricted cash at end of period	$	1,020	$	692

OPERATING CASH FLOWS

The following table summarizes key components of Duke Energy’s operating cash flows.

	Three Months Ended
	March 31,
(in millions)	2022		2021		Variance
Net income	$	820	$	941	$	(121)
Non-cash adjustments to net income	1,582		1,446		136
Payments for asset retirement obligations	(119)		(114)		(5)
Working capital	(488)		(185)		(303)
Net cash provided by operating activities	$	1,795	$	2,088	$	(293)

The variance was primarily due to timing of accruals and payments in working capital accounts.

INVESTING CASH FLOWS

The following table summarizes key components of Duke Energy’s investing cash flows.

	Three Months Ended
	March 31,
(in millions)	2022		2021		Variance
Capital, investment and acquisition expenditures	$	(2,568)	$	(2,215)	$	(353)
Other investing items	(131)		(922)		791
Net cash used in investing activities	$	(2,699)	$	(3,137)	$	438

The variance relates primarily to payment made in 2021 to fund ACP's outstanding debt and lower overall investments in the Commercial Renewables segment, partially offset by increases in capital expenditures due to higher overall investments in the Electric Utilities and Infrastructure and Gas Utilities and Infrastructure segments.

92

MD&A LIQUIDITY AND CAPITAL RESOURCES

FINANCING CASH FLOWS

The following table summarizes key components of Duke Energy’s financing cash flows.

	Three Months Ended
	March 31,
(in millions)	2022		2021		Variance
Issuances of long-term debt, net	$	2,291	$	532	$	1,759
Issuances of common stock	—		5		(5)
Notes payable, commercial paper and other short-term borrowings	(44)		1,187		(1,231)
Dividends paid	(799)		(783)		(16)
Contributions from noncontrolling interests	23		303		(280)
Other financing items	(67)		(59)		(8)
Net cash provided by financing activities	$	1,404	$	1,185	$	219

The variance was primarily due to:

•a $1.8 billion increase in net proceeds from issuances of long-term debt, primarily due to timing of issuances and redemptions of long-term debt.

Partially offset by:

•a $1.2 billion decrease in net borrowings from notes payable and commercial paper; and

•a $280 million decrease in contributions from noncontrolling interests.

OTHER MATTERS

Environmental Regulations

The Duke Energy Registrants are subject to federal, state and local regulations regarding air and water quality, hazardous and solid waste disposal, coal ash and other environmental matters. These regulations can be changed from time to time and result in new obligations of the Duke Energy Registrants. Refer to Note 3 to the Condensed Consolidated Financial Statements, "Regulatory Matters," for further information regarding potential plant retirements and regulatory filings related to the Duke Energy Registrants.

ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

For an in-depth discussion of the Duke Energy Registrants' market risks, see “Quantitative and Qualitative Disclosures about Market Risk” in Item 7 of the Annual Report on Form 10-K for the Duke Energy Registrants. During the three months ended March 31, 2022, there were no material changes to the Duke Energy Registrants' disclosures about market risk.

ITEM 4. CONTROLS AND PROCEDURES

Disclosure Controls and Procedures

Disclosure controls and procedures are controls and other procedures that are designed to ensure that information required to be disclosed by the Duke Energy Registrants in the reports they file or submit under the Exchange Act is recorded, processed, summarized and reported, within the time periods specified by the SEC rules and forms.

Disclosure controls and procedures include, without limitation, controls and procedures designed to provide reasonable assurance that information required to be disclosed by the Duke Energy Registrants in the reports they file or submit under the Exchange Act is accumulated and communicated to management, including the Chief Executive Officer and Chief Financial Officer, as appropriate, to allow timely decisions regarding required disclosure.

Under the supervision and with the participation of management, including the Chief Executive Officer and Chief Financial Officer, the Duke Energy Registrants have evaluated the effectiveness of their disclosure controls and procedures (as such term is defined in Rule 13a-15(e) and 15d-15(e) under the Exchange Act) as of March 31, 2022, and, based upon this evaluation, the Chief Executive Officer and Chief Financial Officer have concluded that these controls and procedures are effective in providing reasonable assurance of compliance.

Changes in Internal Control over Financial Reporting

Under the supervision and with the participation of management, including the Chief Executive Officer and Chief Financial Officer, the Duke Energy Registrants have evaluated changes in internal control over financial reporting (as such term is defined in Rules 13a-15 and 15d-15 under the Exchange Act) that occurred during the fiscal quarter ended March 31, 2022, and have concluded no change has materially affected, or is reasonably likely to materially affect, internal control over financial reporting.

93

OTHER INFORMATION

ITEM 1. LEGAL PROCEEDINGS

For information regarding material legal proceedings, including regulatory and environmental matters, see Note 3, "Regulatory Matters," and Note 4, "Commitments and Contingencies," to the Condensed Consolidated Financial Statements. For additional information, see Item 3, "Legal Proceedings," in Duke Energy's Annual Report on Form 10-K for the year ended December 31, 2021.

ITEM 1A. RISK FACTORS

In addition to the other information set forth in this report, careful consideration should be given to the factors discussed in Part I, “Item 1A. Risk Factors” in the Duke Energy Registrants' Annual Report on Form 10-K for the year ended December 31, 2021, which could materially affect the Duke Energy Registrants’ financial condition or future results.

ITEM 2. UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS

None.

94

EXHIBITS

ITEM 6. EXHIBITS

Exhibits filed herein are designated by an asterisk (*). All exhibits not so designated are incorporated by reference to a prior filing, as indicated. Items constituting management contracts or compensatory plans or arrangements are designated by a double asterisk (**). The company agrees to furnish upon request to the commission a copy of any omitted schedules or exhibits upon request on all items designated by a triple asterisk (***).

			Duke		Duke	Duke	Duke	Duke
Exhibit		Duke	Energy	Progress	Energy	Energy	Energy	Energy
Number		Energy	Carolinas	Energy	Progress	Florida	Ohio	Indiana	Piedmont
4.1	One-Hundred and Sixth Supplemental Indenture, dated as of March 4, 2022 between the registrant and The Bank of New York Mellon Trust Company, N.A., as Trustee, and forms of global bonds representing the First and Refunding Mortgage Bonds, 2.85% Series due 2032 and First and Refunding Mortgage Bonds, 3.55% Series due 2052 (incorporated by reference to Exhibit 4.1 to registrant's Current Report on Form 8-K filed on March 4, 2022, File No. 1-32853).		X
4.2	Eleventh Supplemental Indenture dated as of March 11, 2021, between the registrant and The Bank of New York Mellon Trust Company, N.A., as successor to Citibank, N.A. and form of global notes (incorporated by reference to Exhibit 4.1 to registrant's Current Report on Form 8-K filed on March 11, 2022, File No. 1-6196).								X
4.3	Ninety-second Supplemental Indenture, dated as of March 1, 2022, among the registrant, The Bank of New York Mellon (formerly Irving Trust Company) and Christie Leppert (successor to Frederick G. Herbst) and forms of global bonds (incorporated by reference to Exhibit 4.1 to registrant's Current Report on Form 8-K filed on March 17, 2022, File No. 1-3382).				X
10.1	Duke Energy Corporation Executive Short-term Incentive Plan, as amended and restated, effective February 23, 2022 (incorporated by reference to Exhibit 10.1 to registrant's Current Report on Form 8-K filed on February 24, 2022, File No. 1-32853).	X

95

EXHIBITS

10.2	Amended and Restated Credit Agreement, dated as of March 18, 2022, among Duke Energy Corporation, Duke Energy Carolinas, LLC, Duke Energy Ohio, Inc., Duke Energy Indiana, LLC, Duke Energy Kentucky, Inc., Duke Energy Progress, LLC, Duke Energy Florida, LLC, and Piedmont Natural Gas Company, Inc., the Lenders party thereto, Wells Fargo Bank, National Association, as Administrative Agent and Swingline Lender and Wells Fargo Securities, LLC, as Joint Lead Arranger, Joint Bookrunner and Sustainability Structuring Agent. that increases the amount of the credit facility from $8B to $9B (incorporated by reference to Exhibit 10.1 to registrants' Current Report on Form 8-K filed on March 21, 2022, File Nos. 1-32853, 1-4928, 1-3382, 1-3274, 1-1232, 1-3543, 1-6196).	X	X		X	X	X	X	X
10.3	$1,400,000,000 Term Loan Credit Facility, dated as of March 9, 2022, among the registrant, as Borrower, certain Lenders from time to time parties thereto, and The Bank of Nova Scotia as Administrative Agent and Coordinating Lead Arranger (incorporated by reference to Exhibit 10.1 to registrant's Current Report on Form 8-K filed on March 22, 2022, File No. 1-32853).	X
*10.4	Duke Energy Corporation Restricted Stock Unit Award Agreement	X
*10.5	Duke Energy Corporation 2022 Director Compensation Program	X
*31.1.1	Certification of the Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.	X
*31.1.2	Certification of the Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.		X
*31.1.3	Certification of the Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.			X
*31.1.4	Certification of the Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.				X
*31.1.5	Certification of the Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.					X
*31.1.6	Certification of the Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.						X
*31.1.7	Certification of the Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.							X
*31.1.8	Certification of the Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.								X
*31.2.1	Certification of the Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.	X
*31.2.2	Certification of the Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.		X
*31.2.3	Certification of the Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.			X

96

EXHIBITS

*31.2.4	Certification of the Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.				X
*31.2.5	Certification of the Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.					X
*31.2.6	Certification of the Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.						X
*31.2.7	Certification of the Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.							X
*31.2.8	Certification of the Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.								X
*32.1.1	Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.	X
*32.1.2	Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.		X
*32.1.3	Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.			X
*32.1.4	Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.				X
*32.1.5	Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.					X
*32.1.6	Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.						X
*32.1.7	Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.							X
*32.1.8	Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.								X
*32.2.1	Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.	X
*32.2.2	Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.		X
*32.2.3	Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.			X
*32.2.4	Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.				X
*32.2.5	Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.					X
*32.2.6	Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.						X
*32.2.7	Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.							X

97

EXHIBITS

*32.2.8	Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.								X
*101.INS	XBRL Instance Document (this does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document).	X	X	X	X	X	X	X	X
*101.SCH	XBRL Taxonomy Extension Schema Document.	X	X	X	X	X	X	X	X
*101.CAL	XBRL Taxonomy Calculation Linkbase Document.	X	X	X	X	X	X	X	X
*101.LAB	XBRL Taxonomy Label Linkbase Document.	X	X	X	X	X	X	X	X
*101.PRE	XBRL Taxonomy Presentation Linkbase Document.	X	X	X	X	X	X	X	X
*101.DEF	XBRL Taxonomy Definition Linkbase Document.	X	X	X	X	X	X	X	X
*104	Cover Page Interactive Data File (formatted in Inline XBRL and contained in Exhibit 101).	X	X	X	X	X	X	X	X

The total amount of securities of the registrant or its subsidiaries authorized under any instrument with respect to long-term debt not filed as an exhibit does not exceed 10% of the total assets of the registrant and its subsidiaries on a consolidated basis. The registrant agrees, upon request of the SEC, to furnish copies of any or all of such instruments to it.

98

SIGNATURES

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrants have duly caused this report to be signed on their behalf by the undersigned thereunto duly authorized.

		DUKE ENERGY CORPORATION DUKE ENERGY CAROLINAS, LLC PROGRESS ENERGY, INC. DUKE ENERGY PROGRESS, LLC DUKE ENERGY FLORIDA, LLC DUKE ENERGY OHIO, INC. DUKE ENERGY INDIANA, LLC PIEDMONT NATURAL GAS COMPANY, INC.
Date:	May 9, 2022	/s/ STEVEN K. YOUNG
		Steven K. Young Executive Vice President and Chief Financial Officer (Principal Financial Officer)
Date:	May 9, 2022	/s/ CYNTHIA S. LEE
		Cynthia S. Lee Vice President, Chief Accounting Officer and Controller (Principal Accounting Officer)

99

EX-10.4

Exhibit 10.4

RESTRICTED STOCK UNIT AWARD AGREEMENT

Duke Energy Corporation (the "Corporation") grants to the individual named below ("Grantee"), in accordance with the terms of the Duke Energy Corporation 2015 Long-Term Incentive Plan, as it may be amended from time to time (the "Plan") and this Restricted Stock Unit Award Agreement (the "Agreement"), the following number of Restricted Stock Units (the "Award"), on the Date of Grant set forth below:

Name of Grantee:                ________________________________

Number of Restricted Stock Units:     ________________________________

Date of Grant:                ________________________________

Vesting Dates:    ________________________________

Section 1.Nature of Restricted Stock Units.   Each Restricted Stock Unit, upon becoming vested, represents a right to receive payment in the form of one (1) share of Common Stock (a "Share"). Restricted Stock Units are used solely as units of measurement and are not Shares, and Grantee is not, and has no rights as, a shareholder of the Corporation by virtue of this Award.

Section 2.Vesting of Restricted Stock Units.  Subject to Section 3 and 6 below, the Restricted Stock Units shall vest as follows:

(a)The Restricted Stock Units shall vest in equal installments on each vesting date set forth above (each a "Vesting Date") (subject to rounding conventions adopted by the Corporation from time to time; provided that in no event will the total Shares issued exceed the total units granted under the Award), provided that Grantee shall have remained in the continuous employ of the Corporation or a Subsidiary through the applicable Vesting Date.

(b)    Notwithstanding Section 2(a), the Restricted Stock Units that have not yet vested under this Section 2 shall immediately vest if, prior to the applicable Vesting Date: (i) Grantee ceases to be employed with the Corporation and its Subsidiaries by reason of death or Disability (defined by reference Section 22(e)(3) of the Code), or (ii) a Change in Control occurs and the Corporation and its Subsidiaries terminate Grantee's employment other than for cause (as determined by the Corporation in its sole discretion), or Grantee's employment terminates under circumstances that entitle Grantee to severance benefits under an employment or change in control agreement with the Corporation or a Subsidiary, or a severance plan maintained by the Corporation or a Subsidiary, as applicable, in each case within the two-year period commencing on the Change in Control.

(c)    Notwithstanding Sections 2(a) or 2(b), a pro-rated portion of the Restricted Stock Units that has not yet vested under this Section 2 shall immediately vest if, prior to the applicable Vesting Date (and other than as provided in Section 2(b)(ii) above): (i) the Corporation and its Subsidiaries terminate Grantee's employment other than for cause, death or Disability, including as a result of the divestiture of assets, a business or a company by the

Corporation or a Subsidiary, or (ii) Grantee voluntarily terminates employment with the Corporation and its Subsidiaries after having attained age 55 and completed 10 years of consecutive service from Grantee's most recent date of hire or re-hire, as applicable (as determined under such rules as may be established by the Corporation from time-to-time) ("Retirement"). The pro-rated portion of the Restricted Stock Units that becomes vested under this Section 2(c), if any, shall be determined by the Committee or its delegate, in its sole discretion, based upon Grantee's continuous employment with the Corporation and its Subsidiaries from the Date of Grant through the date of termination of employment (including additional service credit provided to Grantee, if any, under an employment agreement with the Corporation or a Subsidiary, or a severance plan maintained by the Corporation or a Subsidiary, as applicable). Notwithstanding the foregoing provisions, if Grantee is a member of the Senior Management Committee on the Date of Grant, Grantee shall be entitled to all (rather than a pro-rated portion) of the Restricted Stock Units in the event that, prior to the applicable Vesting Date, Grantee voluntarily terminates employment with the Corporation and its Subsidiaries after having attained age 60 and completed five years of consecutive service from Grantee’s most recent date of hire or re-hire, as applicable (as determined under such rules as may be established by the Corporation from time-to-time), but only if such voluntary termination occurs following the completion of one year of service after the Date of Grant.

(d)    For purposes of Section 2 of this Agreement, the continuous employment of Grantee with the Corporation and its Subsidiaries shall not be deemed to have been interrupted, and Grantee shall not be deemed to have ceased to be an employee, by reason of the transfer of his or her employment among the Corporation and its Subsidiaries or a leave of absence approved by the Corporation or a Subsidiary; provided that, to the extent permitted under applicable law, the Corporation shall pro-rate the vesting of Restricted Share Units in the event Grantee is on an approved but unpaid leave of absence, based upon the portion of the applicable vesting period during which Grantee received payment of salary (as determined under such rules as may be established by the Corporation from time-to-time).

Section 3.    Forfeiture. The Restricted Stock Units that have not yet vested pursuant to Section 2 (including without limitation any right to Dividend Equivalents described in Section 5 hereof relating to dividends payable on or after the date of forfeiture) shall be forfeited automatically without further action or notice if (a) Grantee ceases to be employed by the Corporation or a Subsidiary other than as provided in Sections 2(b) or 2(c), or (b) the Committee or its delegate, in its sole discretion, determines that Grantee is in violation of any obligation identified in Section 6.

Section 4.    Payment of Restricted Stock Units.  

(a)    Except as provided in Section 4(b) below, payment of vested Restricted Stock Units shall be made to Grantee within 60 days following the date the units become vested in accordance with Section 2, except to the extent deferred by Grantee in accordance with procedures as the Committee, or its delegate, may prescribe from time to time.

(b)    To the extent Grantee's right to receive payment of the Restricted Stock Units constitutes a "deferral of compensation" within the meaning of Section 409A of the Code (because, for example, Grantee is Retirement eligible (or could

2

become Retirement eligible during the term of this Agreement) or is a party to a Change in Control Agreement with the Corporation), then notwithstanding Section 4(a) hereof, payment of vested Restricted Stock Units shall be made to Grantee within 60 days following the earlier of: (i) Grantee's "separation from service" within the meaning of Section 409A of the Code; provided, however, that if Grantee is a "specified employee" within the meaning of Section 409A of the Code (as determined pursuant to the Company's policy for identifying specified employees) on the date of the Grantee's separation from service, then to the extent required to comply with Section 409A of the Code, payment shall be delayed until the first business day that is more than six months after the date of his or her separation from service; or (ii) the applicable Vesting Date(s) as provided in Section 2(a).

(c)    Payment of vested Restricted Stock Units shall be in the form of one (1) Share for each full Restricted Stock Unit; provided that if payment would be less than ten (10) Shares, or if payment would result in fractional shares, then, if so determined by the Committee or its delegate, in its sole discretion, payment may be made in cash in lieu of Shares.

Section 5.Dividend Equivalent Payments.  With respect to each Restricted Stock Unit, Grantee shall be entitled to a cash payment (without interest) equal to the cash dividends declared and payable with respect to one (1) Share for each record date that occurs during the period beginning on the Date of Grant and ending on the date the Restricted Stock Unit is paid (the "Dividend Equivalent"). The right to any Dividend Equivalents shall be forfeited to the extent that the underlying Restricted Stock Unit is forfeited. Dividend Equivalents shall be paid to Grantee at the same time that the related cash dividend is paid to shareholders of the Corporation. Dividend Equivalents will be subject to any required withholding for federal, state, local, foreign or other taxes.

Section 6.     Restrictive Covenants. 

(a)  In consideration of the Award, Grantee agrees that during the period ending on the _______ anniversary of the Date of Grant ("Restricted Period"), Grantee shall not for any reason, directly or indirectly, without the prior written consent of the Corporation or its delegate: (i) become employed, engaged or involved with a competitor (defined below) of the Corporation or any Subsidiary in a position that involves: providing services that relate to or are similar in nature or purpose to the services performed by Grantee for the Corporation or any Subsidiary at any time during his or her previous _______ years of employment with the Corporation or any Subsidiary; or, supervision, management, direction or advice regarding such services; either as principal, agent, manager, employee, partner, shareholder, director, officer or consultant (other than as a less-than three percent (3%) equity owner of any corporation traded on any national, international or regional stock exchange or in the over-the-counter market); or (ii) induce or attempt to induce any customer, client, supplier, employee, agent or independent contractor of the Corporation or any of the Subsidiaries to reduce, terminate, restrict or otherwise alter (to the Corporation's detriment) its business relationship with the Corporation. 

(b)       The noncompetition obligations of clause (i) of the preceding sentence shall be effective only with respect to a "competitor" of the Corporation or any Subsidiary which is understood to mean any person or entity in competition with the Corporation or any Subsidiary, and more particularly those persons and entities engaged in any business in which the Corporation, including Subsidiaries,

3

is engaged at the termination of Grantee's continuous employment by the Corporation, including Subsidiaries; and within the following geographical areas: (i) any country in the world (other than the United States) where the Corporation, including Subsidiaries, has at least $25 million in capital deployed as of the termination of Grantee's employment; (ii) the states of Florida, Indiana, Kentucky, North Carolina, Ohio, South Carolina and Tennessee, and (iii) any other state in the United States where the Corporation, including the Subsidiaries, has at least $25 million in capital deployed as of the termination of Grantee's employment. The Corporation and Grantee intend the above restrictions on competition in geographical areas to be entirely severable and independent, and any invalidity or unenforceability of this provision with respect to any one or more of such restrictions, including geographical areas, shall not render this provision unenforceable as applied to any one or more of the other restrictions, including geographical areas. 

(c)        Grantee agrees not to: (i) disclose to any third party or otherwise misappropriate any confidential or proprietary information of the Corporation or of any Subsidiary (except as required by subpoena or other legal process, in which event Grantee will give the Chief Legal Officer of the Corporation prompt notice of such subpoena or other legal process in order to permit the Corporation or any affected individual to seek appropriate protective orders); or (ii) publish or provide any oral or written statements about the Corporation or any Subsidiary, any of the Corporation's or any Subsidiary's current or former officers, executives, directors, employees, agents or representatives that are false, disparaging or defamatory, or that disclose private or confidential information about their business or personal affairs.   The obligations of this paragraph are in addition to, and do not replace, eliminate, or reduce in any way, all other contractual, statutory, or common law obligations Grantee may have to protect the Corporation's confidential information and trade secrets and to avoid defamation or business disparagement.

(d)       Nothing contained in this Agreement shall prohibit, restrict or otherwise discourage Grantee from reporting possible violations of federal, state or local laws or regulations to any federal, state or local governmental agency or commission (a "Government Agency"), from making other disclosures that are protected under the whistleblower provisions of federal, state or local laws or regulations, or from participating in "protected activity" as defined in 10 CFR 50.7 and Section 211 of the Energy Reorganization Act of 1974, including, without limitation, reporting any suspected instance of illegal activity of any nature, any nuclear safety concern, any workplace safety concern, any public safety concern, or any other matter within the United States Nuclear Regulatory Commission's ("NRC") regulatory responsibilities to the NRC or any other Government Agency. Grantee does not need prior authorization of any kind to engage in such activity or make any such reports or disclosures to any Government Agency and Grantee is not required to notify the Corporation that Grantee has made such reports or disclosures. Nothing in this Agreement limits any right Grantee may have to receive a whistleblower award or bounty for information provided to any Government Agency.

(e)       If any part of this Section is held to be unenforceable because of the duration, scope or geographical area covered, the Corporation and Grantee agree

4

to modify such part, or that the court making such holding shall have the power to modify such part, to reduce its duration, scope or geographical area.

(f)        Nothing in Section 6 shall be construed to prohibit Grantee from being retained during the Restricted Period in a capacity as an attorney licensed to practice law, or to restrict Grantee from providing advice and counsel in such capacity, in any jurisdiction where such prohibition or restriction is contrary to law.  Notwithstanding any provisions of this Award to the contrary, Grantee may be entitled to immunity and protection from retaliation under the Defend Trade Secrets Act of 2016 for disclosing a trade secret under limited circumstances, as set forth in the Corporation's Innovations - Inventions, Patents and Intellectual Properties Policy.

           (g)       Grantee's agreement to the restrictions provided for in this Agreement and the Corporation's agreement to provide the Award are mutually dependent consideration. Therefore, notwithstanding any other provision to the contrary in this Agreement, if Grantee materially breaches any provision of this Section 6 or if the enforceability of any material restriction on Grantee provided for in this Agreement is challenged and found unenforceable by a court of law, then the Corporation shall, at its election, have the right to (i) cancel the Award, (ii) recover from Grantee any Shares or Dividend Equivalents or other cash paid under Award, or (iii) with respect to any Shares paid under the Award that have been disposed of, require Grantee to repay to the Corporation the fair market value of such Shares on the date such shares were sold, transferred, or otherwise disposed of by Grantee.   This provision shall be construed as a return of consideration or ill-gotten gains due to the failure of Grantee's promises under the Agreement, and not as a liquidated damages clause.  Nothing herein shall (x) reduce or eliminate the Corporation's right to assert that the restrictions provided for in this agreement are fully enforceable as written, or as modified by a court pursuant to Section 6, or (y) eliminate, reduce, or compromise the application of temporary or permanent injunctive relief as a fully appropriate and applicable remedy to enforce the restrictions provided for in Section 6 (inclusive of its subparts), in addition to recovery of damages or other remedies otherwise allowed by law.

(h)        Notwithstanding any other provision of this Agreement to the contrary, if the Corporation determines at any time that the Grantee engaged in Detrimental Activity while employed by the Corporation or a Subsidiary, then, to the extent permitted by applicable law, such Grantee: (a) shall not be entitled to any further Shares, Dividend Equivalents or other amounts hereunder (and, if it is determined that a participant may have engaged in Detrimental Activity, payment of any Shares, Dividend Equivalents or other amounts otherwise due to the Grantee shall be suspended pending resolution to the Corporation’s satisfaction of any investigation of the matter), and (b) shall be required to promptly return to the Corporation, upon notice from the Corporation, any Shares, Dividend Equivalents or other amounts received under this Agreement by the Grantee during the three-year period preceding the date of the determination by the Corporation. To the extent that Shares, Dividend Equivalents or other amounts are not immediately returned or paid to the Corporation as provided in this paragraph, the Corporation may, to the extent permitted by applicable law, seek other remedies, including a set off of the Shares, Dividend Equivalents or other amounts so payable to it against any amounts that may be owing from time to time by the Corporation or an affiliate to the Grantee.  For purposes of this paragraph, “Detrimental Activity” means: (i) the engaging by the Grantee in misconduct that is detrimental to the

5

financial condition or business reputation of the Corporation or its affiliates, including due to any adverse publicity, or (ii) the Grantee’s breach or violation of any material written policy of the Corporation, including without limitation the Corporation’s Code of Business Ethics or any written policy or regulation dealing with workplace harassment, including sexual harassment and other forms of harassment prohibited by the Corporation’s Harassment-Free Workplace Policy.

Section 7.    Change in Control. Vesting of the Restricted Stock Units shall not accelerate solely as a result of a Change in Control. In the event of a Change in Control, the surviving, continuing, successor, or purchasing entity, as the case may be, may, without Grantee's consent, either assume or continue the Corporation's rights and obligations under this Agreement or provide a substantially equivalent award or other consideration in substitution for the Restricted Stock Units subject to this Agreement.

Section 8.    Withholding. To the extent the Corporation or any Subsidiary is required to withhold any federal, state, local, foreign or other taxes in connection with the delivery of Shares under this Agreement, then the Corporation or Subsidiary (as applicable) shall retain a number of Shares otherwise deliverable hereunder with a value equal to the required withholding (based on the Fair Market Value of the Shares on the date of delivery); provided that in no event shall the value of the Shares retained exceed the minimum amount of taxes required to be withheld or such other amount permitted under the Plan.

Section 9.Conflicts with Plan, Correction of Errors, Section 409A and Grantee's Consent.  In the event that any provision of this Agreement conflicts in any way with a provision of the Plan, such Plan provision shall be controlling and the applicable provision of this Agreement shall be without force and effect to the extent necessary to cause such Plan provision to be controlling. Capitalized terms used herein without definition shall have the meanings assigned to them in the Plan. In the event that, due to administrative error, this Agreement does not accurately reflect an Award properly granted to Grantee pursuant to the Plan, the Corporation, acting through its Executive Compensation and Benefits Department, reserves the right to cancel any erroneous document and, if appropriate, to replace the cancelled document with a corrected document.

    To the extent applicable, it is intended that this Agreement comply with the provisions of Section 409A of the Code and that this Award not result in unfavorable tax consequences to Grantee under Section 409A of the Code. This Agreement will be administered and interpreted in a manner consistent with this intent, and any provision that would cause this Agreement to fail to satisfy Section 409A of the Code will have no force and effect until amended to comply therewith (which amendment may be retroactive to the extent permitted by Section 409A of the Code and made without the consent of Grantee). For purposes of this Agreement, each amount to be paid to Grantee pursuant to this Agreement shall be construed as a separate identified payment for purposes of Section 409A of the Code.

    Notwithstanding the foregoing, this Award is subject to cancellation by the Corporation in its sole discretion unless Grantee has signed a duplicate of this Agreement, in the space provided below, and returned the signed duplicate to the Executive Compensation and Benefits Department – Restricted Stock Units, ____________________________________, which, if, and to the extent,

6

permitted by the Executive Compensation and Benefits Department, may be accomplished by electronic means.

    IN WITNESS WHEREOF, the Corporation has caused this Agreement to be executed effective as of the Date of Grant.

        DUKE ENERGY CORPORATION

        By:

                        Its:

Acceptance of Restricted StockUnit Award

    IN WITNESS OF Grantee's acceptance of this Award and Grantee's agreement to be bound by the provisions of this Agreement and the Plan, Grantee has signed this Agreement on _____________________.

    ____________________________

    Grantee's Signature

    ____________________________    (print name)

7

EX-10.5

Exhibit 10.5

DUKE ENERGY CORPORATION DIRECTOR COMPENSATION PROGRAM SUMMARY

Effective May 5, 2022, the compensation paid to our outside directors will consist of:

Type of Fee	Fee
Annual Board Retainer (Cash)	$125,000
Annual Board Retainer (Stock)	$175,000
Annual Non-Executive Chairman of the Board Retainer, if applicable	$100,000
Annual Lead Director Retainer, if applicable	$40,000
Annual Audit Committee Chair Retainer	$25,000
Annual Compensation & People Development Committee Chair/Nuclear Oversight Committee Chair Retainer	$20,000
Annual Committee Chair Retainer (Other Committees)	$15,000
Additional Annual Board Retainer (Cash) (up to one) If director meets one or more of the following during the calendar year: - Serves as a member of a special committee - Attends (in person) more than two offsite committee meetings (excluding the annual Board retreat) - Attends more than thirty (30) meetings of the Board and its regular standing committees	$10,000

EX-31.1.1

EXHIBIT 31.1.1

CERTIFICATION OF THE CHIEF EXECUTIVE OFFICER

PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Lynn J. Good, certify that:

1)    I have reviewed this quarterly report on Form 10-Q of Duke Energy Corporation;

2)    Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3)    Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4)    The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Acts 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(s) 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.

Date: May 9, 2022

/s/ LYNN J. GOOD

Lynn J. Good
Chair, President and
Chief Executive Officer

EX-31.1.2

EXHIBIT 31.1.2

CERTIFICATION OF THE CHIEF EXECUTIVE OFFICER

PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Lynn J. Good, certify that:

1)    I have reviewed this quarterly report on Form 10-Q of Duke Energy Carolinas, LLC;

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(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Acts 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(s) 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.

Date: May 9, 2022

/s/ LYNN J. GOOD

Lynn J. Good
Chief Executive Officer

EX-31.1.3

EXHIBIT 31.1.3

CERTIFICATION OF THE CHIEF EXECUTIVE OFFICER

PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Lynn J. Good, certify that:

1)    I have reviewed this quarterly report on Form 10-Q of Progress 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(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Acts 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(s) 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.

Date: May 9, 2022

/s/ LYNN J. GOOD

Lynn J. Good
Chief Executive Officer

EX-31.1.4

EXHIBIT 31.1.4

CERTIFICATION OF THE CHIEF EXECUTIVE OFFICER

PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Lynn J. Good, certify that:

1)    I have reviewed this quarterly report on Form 10-Q of Duke Energy Progress, LLC;

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(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Acts 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(s) 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.

Date: May 9, 2022

/s/ LYNN J. GOOD

Lynn J. Good
Chief Executive Officer

EX-31.1.5

EXHIBIT 31.1.5

CERTIFICATION OF THE CHIEF EXECUTIVE OFFICER

PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Lynn J. Good, certify that:

1)    I have reviewed this quarterly report on Form 10-Q of Duke Energy Florida, LLC;

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(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Acts 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(s) 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.

Date: May 9, 2022

/s/ LYNN J. GOOD

Lynn J. Good
Chief Executive Officer

EX-31.1.6

EXHIBIT 31.1.6

CERTIFICATION OF THE CHIEF EXECUTIVE OFFICER

PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Lynn J. Good, certify that:

1)    I have reviewed this quarterly report on Form 10-Q of Duke Energy Ohio, 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(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Acts 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(s) 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.

Date: May 9, 2022

/s/ LYNN J. GOOD

Lynn J. Good
Chief Executive Officer

EX-31.1.7

EXHIBIT 31.1.7

CERTIFICATION OF THE CHIEF EXECUTIVE OFFICER

PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Lynn J. Good, certify that:

1)    I have reviewed this quarterly report on Form 10-Q of Duke Energy Indiana, LLC;

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(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Acts 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(s) 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.

Date: May 9, 2022

/s/ LYNN J. GOOD

Lynn J. Good
Chief Executive Officer

EX-31.1.8

EXHIBIT 31.1.8

CERTIFICATION OF THE CHIEF EXECUTIVE OFFICER

PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Lynn J. Good, certify that:

1)    I have reviewed this quarterly report on Form 10-Q of Piedmont Natural Gas Company, 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(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Acts 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(s) 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.

Date: May 9, 2022

/s/ LYNN J. GOOD

Lynn J. Good
Chief Executive Officer

EX-31.2.1

EXHIBIT 31.2.1

CERTIFICATION OF THE CHIEF FINANCIAL OFFICER

PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Steven K. Young, certify that:

1)    I have reviewed this quarterly report on Form 10-Q of Duke Energy Corporation;

2)    Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3)    Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4)    The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Acts 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(s) 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.

Date: May 9, 2022

/s/ STEVEN K. YOUNG

Steven K. Young
Executive Vice President and Chief Financial Officer

EX-31.2.2

EXHIBIT 31.2.2

CERTIFICATION OF THE CHIEF FINANCIAL OFFICER

PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Steven K. Young, certify that:

1)    I have reviewed this quarterly report on Form 10-Q of Duke Energy Carolinas, LLC;

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(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Acts 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(s) 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.

Date: May 9, 2022

/s/ STEVEN K. YOUNG

Steven K. Young
Executive Vice President and Chief Financial Officer

EX-31.2.3

EXHIBIT 31.2.3

CERTIFICATION OF THE CHIEF FINANCIAL OFFICER

PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Steven K. Young, certify that:

1)    I have reviewed this quarterly report on Form 10-Q of Progress 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(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Acts 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(s) 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.

Date: May 9, 2022

/s/ STEVEN K. YOUNG

Steven K. Young
Executive Vice President and Chief Financial Officer 

EX-31.2.4

EXHIBIT 31.2.4

CERTIFICATION OF THE CHIEF FINANCIAL OFFICER

PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Steven K. Young, certify that:

1)    I have reviewed this quarterly report on Form 10-Q of Duke Energy Progress, LLC;

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(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Acts 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(s) 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.

Date: May 9, 2022

/s/ STEVEN K. YOUNG

Steven K. Young
Executive Vice President and Chief Financial Officer

EX-31.2.5

EXHIBIT 31.2.5

CERTIFICATION OF THE CHIEF FINANCIAL OFFICER

PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Steven K. Young, certify that:

1)    I have reviewed this quarterly report on Form 10-Q of Duke Energy Florida, LLC;

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(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Acts 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(s) 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.

Date: May 9, 2022

/s/ STEVEN K. YOUNG

Steven K. Young
Executive Vice President and Chief Financial Officer

EX-31.2.6

EXHIBIT 31.2.6

CERTIFICATION OF THE CHIEF FINANCIAL OFFICER

PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Steven K. Young, certify that:

1)    I have reviewed this quarterly report on Form 10-Q of Duke Energy Ohio, 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(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Acts 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(s) 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.

Date: May 9, 2022

/s/ STEVEN K. YOUNG

Steven K. Young
Executive Vice President and Chief Financial Officer

EX-31.2.7

EXHIBIT 31.2.7

CERTIFICATION OF THE CHIEF FINANCIAL OFFICER

PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Steven K. Young, certify that:

1)    I have reviewed this quarterly report on Form 10-Q of Duke Energy Indiana, LLC;

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(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Acts 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(s) 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.

Date: May 9, 2022

/s/ STEVEN K. YOUNG

Steven K. Young
Executive Vice President and Chief Financial Officer

EX-31.2.8

EXHIBIT 31.2.8

CERTIFICATION OF THE CHIEF FINANCIAL OFFICER

PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Steven K. Young, certify that:

1)    I have reviewed this quarterly report on Form 10-Q of Piedmont Natural Gas Company, 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(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Acts 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(s) 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.

Date: May 9, 2022

/s/ STEVEN K. YOUNG

Steven K. Young
Executive Vice President and Chief Financial Officer 

EX-32.1.1

EXHIBIT 32.1.1

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 of Duke Energy Corporation (“Duke Energy”) on Form 10-Q for the period ending March 31, 2022, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Lynn J. Good, Chair, President and Chief Executive Officer of Duke Energy, 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 Duke Energy.

/s/ LYNN J. GOOD

Lynn J. Good
Chair, President and
Chief Executive Officer

May 9, 2022

EX-32.1.2

EXHIBIT 32.1.2

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 of Duke Energy Carolinas, LLC (“Duke Energy Carolinas”) on Form 10-Q for the period ending March 31, 2022, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Lynn J. Good, Chief Executive Officer of Duke Energy Carolinas, 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 Duke Energy Carolinas.

/s/ LYNN J. GOOD

Lynn J. Good
Chief Executive Officer

May 9, 2022

EX-32.1.3

EXHIBIT 32.1.3

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 of Progress Energy, Inc. (“Progress Energy”) on Form 10-Q for the period ending March 31, 2022, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Lynn J. Good, Chief Executive Officer of Progress Energy, 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 Progress Energy.

/s/ LYNN J. GOOD

Lynn J. Good
Chief Executive Officer

May 9, 2022

EX-32.1.4

EXHIBIT 32.1.4

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 of Duke Energy Progress, LLC (“Duke Energy Progress”) on Form 10-Q for the period ending March 31, 2022, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Lynn J. Good, Chief Executive Officer of Duke Energy Progress, 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 Duke Energy Progress.

/s/ LYNN J. GOOD

Lynn J. Good
Chief Executive Officer

May 9, 2022

EX-32.1.5

EXHIBIT 32.1.5

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 of Duke Energy Florida, LLC (“Duke Energy Florida”) on Form 10-Q for the period ending March 31, 2022, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Lynn J. Good, Chief Executive Officer of Duke Energy Florida, 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 Duke Energy Florida.

/s/ LYNN J. GOOD

Lynn J. Good
Chief Executive Officer

May 9, 2022

EX-32.1.6

EXHIBIT 32.1.6

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 of Duke Energy Ohio, Inc. (“Duke Energy Ohio”) on Form 10-Q for the period ending March 31, 2022, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Lynn J. Good, Chief Executive Officer of Duke Energy Ohio, 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 Duke Energy Ohio.

/s/ LYNN J. GOOD

Lynn J. Good
Chief Executive Officer

May 9, 2022

EX-32.1.7

EXHIBIT 32.1.7

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 of Duke Energy Indiana, LLC (“Duke Energy Indiana”) on Form 10-Q for the period ending March 31, 2022, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Lynn J. Good, Chief Executive Officer of Duke Energy Indiana, 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 Duke Energy Indiana.

/s/ LYNN J. GOOD

Lynn J. Good
Chief Executive Officer

May 9, 2022

EX-32.1.8

EXHIBIT 32.1.8

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 of Piedmont Natural Gas Company, Inc. (“Piedmont”) on Form 10-Q for the period ending March 31, 2022, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Lynn J. Good, Chief Executive Officer of Piedmont, 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 Piedmont.

/s/ LYNN J. GOOD

Lynn J. Good
Chief Executive Officer

May 9, 2022

EX-32.2.1

EXHIBIT 32.2.1

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 of Duke Energy Corporation (“Duke Energy”) on Form 10-Q for the period ending March 31, 2022, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Steven K. Young, Executive Vice President and Chief Financial Officer of Duke Energy, 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 Duke Energy.

/s/ STEVEN K. YOUNG

Steven K. Young
Executive Vice President and Chief Financial Officer

May 9, 2022

EX-32.2.2

EXHIBIT 32.2.2

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 of Duke Energy Carolinas, LLC (“Duke Energy Carolinas”) on Form 10-Q for the period ending March 31, 2022, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Steven K. Young, Executive Vice President and Chief Financial Officer of Duke Energy Carolinas, 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 Duke Energy Carolinas.

/s/ STEVEN K. YOUNG

Steven K. Young
Executive Vice President and Chief Financial Officer

May 9, 2022

EX-32.2.3

EXHIBIT 32.2.3

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 of Progress Energy, Inc. (“Progress Energy”) on Form 10-Q for the period ending March 31, 2022, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Steven K. Young, Executive Vice President and Chief Financial Officer of Progress Energy, 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 Progress Energy.

/s/ STEVEN K. YOUNG

Steven K. Young
Executive Vice President and Chief Financial Officer

May 9, 2022

EX-32.2.4

EXHIBIT 32.2.4

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 of Duke Energy Progress, LLC (“Duke Energy Progress”) on Form 10-Q for the period ending March 31, 2022, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Steven K. Young, Executive Vice President and Chief Financial Officer of Duke Energy Progress, 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 Duke Energy Progress.

/s/ STEVEN K. YOUNG

Steven K. Young
Executive Vice President and Chief Financial Officer

May 9, 2022

EX-32.2.5

EXHIBIT 32.2.5

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 of Duke Energy Florida, LLC (“Duke Energy Florida”) on Form 10-Q for the period ending March 31, 2022, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Steven K. Young, Executive Vice President and Chief Financial Officer of Duke Energy Florida, 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 Duke Energy Florida.

/s/ STEVEN K. YOUNG

Steven K. Young
Executive Vice President and Chief Financial Officer

May 9, 2022

EX-32.2.6

EXHIBIT 32.2.6

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 of Duke Energy Ohio, Inc. (“Duke Energy Ohio”) on Form 10-Q for the period ending March 31, 2022, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Steven K. Young, Executive Vice President and Chief Financial Officer of Duke Energy Ohio, 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 Duke Energy Ohio.

/s/ STEVEN K. YOUNG

Steven K. Young
Executive Vice President and Chief Financial Officer

May 9, 2022

EX-32.2.7

EXHIBIT 32.2.7

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 of Duke Energy Indiana, LLC (“Duke Energy Indiana”) on Form 10-Q for the period ending March 31, 2022, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Steven K. Young, Executive Vice President and Chief Financial Officer of Duke Energy Indiana, 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 Duke Energy Indiana.

/s/ STEVEN K. YOUNG

Steven K. Young
Executive Vice President and Chief Financial Officer

May 9, 2022

EX-32.2.8

EXHIBIT 32.2.8

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 of Piedmont Natural Gas Company, Inc. (“Piedmont”) on Form 10-Q for the period ending March 31, 2022, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Steven K. Young, Executive Vice President and Chief Financial Officer of Piedmont, 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 Piedmont.

/s/ STEVEN K. YOUNG

Steven K. Young
Executive Vice President and Chief Financial Officer

May 9, 2022

XML

Cover Page - shares	3 Months Ended
	Mar. 31, 2022	Apr. 30, 2022
Document Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2022
Document Transition Report	false
Entity File Number	1-32853
Entity Registrant Name	DUKE ENERGY CORPORATION
Entity Tax Identification Number	20-2777218
Entity Incorporation, State or Country Code	DE
Entity Address, Address Line One	526 South Church Street
Entity Address, City or Town	Charlotte
Entity Address, State or Province	NC
Entity Address, Postal Zip Code	28202-1803
City Area Code	704
Local Phone Number	382-3853
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		769,900,482
Entity Central Index Key	0001326160
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	Q1
Amendment Flag	false
Duke Energy Carolinas
Document Information [Line Items]
Entity File Number	1-4928
Entity Registrant Name	DUKE ENERGY CAROLINAS, LLC
Entity Tax Identification Number	56-0205520
Entity Incorporation, State or Country Code	NC
Entity Address, Address Line One	526 South Church Street
Entity Address, City or Town	Charlotte
Entity Address, State or Province	NC
Entity Address, Postal Zip Code	28202-1803
City Area Code	704
Local Phone Number	382-3853
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Central Index Key	0000030371
Current Fiscal Year End Date	--12-31
Progress Energy
Document Information [Line Items]
Entity File Number	1-15929
Entity Registrant Name	PROGRESS ENERGY, INC.
Entity Tax Identification Number	56-2155481
Entity Incorporation, State or Country Code	NC
Entity Address, Address Line One	410 South Wilmington Street
Entity Address, City or Town	Raleigh
Entity Address, State or Province	NC
Entity Address, Postal Zip Code	27601-1748
City Area Code	704
Local Phone Number	382-3853
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Central Index Key	0001094093
Current Fiscal Year End Date	--12-31
Duke Energy Progress
Document Information [Line Items]
Entity File Number	1-3382
Entity Registrant Name	DUKE ENERGY PROGRESS, LLC
Entity Tax Identification Number	56-0165465
Entity Incorporation, State or Country Code	NC
Entity Address, Address Line One	410 South Wilmington Street
Entity Address, City or Town	Raleigh
Entity Address, State or Province	NC
Entity Address, Postal Zip Code	27601-1748
City Area Code	704
Local Phone Number	382-3853
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Central Index Key	0000017797
Current Fiscal Year End Date	--12-31
Duke Energy Florida
Document Information [Line Items]
Entity File Number	1-3274
Entity Registrant Name	DUKE ENERGY FLORIDA, LLC
Entity Tax Identification Number	59-0247770
Entity Incorporation, State or Country Code	FL
Entity Address, Address Line One	299 First Avenue North
Entity Address, City or Town	St. Petersburg
Entity Address, State or Province	FL
Entity Address, Postal Zip Code	33701
City Area Code	704
Local Phone Number	382-3853
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Central Index Key	0000037637
Current Fiscal Year End Date	--12-31
Duke Energy Ohio
Document Information [Line Items]
Entity File Number	1-1232
Entity Registrant Name	DUKE ENERGY OHIO, INC.
Entity Tax Identification Number	31-0240030
Entity Incorporation, State or Country Code	OH
Entity Address, Address Line One	139 East Fourth Street
Entity Address, City or Town	Cincinnati
Entity Address, State or Province	OH
Entity Address, Postal Zip Code	45202
City Area Code	704
Local Phone Number	382-3853
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Central Index Key	0000020290
Current Fiscal Year End Date	--12-31
Duke Energy Indiana
Document Information [Line Items]
Entity File Number	1-3543
Entity Registrant Name	DUKE ENERGY INDIANA, LLC
Entity Tax Identification Number	35-0594457
Entity Incorporation, State or Country Code	IN
Entity Address, Address Line One	1000 East Main Street
Entity Address, City or Town	Plainfield
Entity Address, State or Province	IN
Entity Address, Postal Zip Code	46168
City Area Code	704
Local Phone Number	382-3853
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Central Index Key	0000081020
Current Fiscal Year End Date	--12-31
Piedmont
Document Information [Line Items]
Entity File Number	1-6196
Entity Registrant Name	PIEDMONT NATURAL GAS COMPANY, INC.
Entity Tax Identification Number	56-0556998
Entity Incorporation, State or Country Code	NC
Entity Address, Address Line One	4720 Piedmont Row Drive
Entity Address, City or Town	Charlotte
Entity Address, State or Province	NC
Entity Address, Postal Zip Code	28210
City Area Code	704
Local Phone Number	364-3120
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Central Index Key	0000078460
Current Fiscal Year End Date	--12-31
Common Stock
Document Information [Line Items]
Title of 12(b) Security	Common Stock, $0.001 par value
Trading Symbol	DUK
Security Exchange Name	NYSE
Junior Subordinated Debentures 5.625% Coupon Due September 2078
Document Information [Line Items]
Title of 12(b) Security	5.625% Junior Subordinated Debentures
Trading Symbol	DUKB
Security Exchange Name	NYSE
Depositary Share
Document Information [Line Items]
Title of 12(b) Security	Depositary Shares
Trading Symbol	DUK PR A
Security Exchange Name	NYSE

XML

Condensed Consolidated Statements of Operations and Comprehensive Income - USD ($) shares in Millions, $ in Millions		3 Months Ended
		Mar. 31, 2022	Mar. 31, 2021
Operating Revenues
Regulated electric		$ 5,933	$ 5,219
Regulated natural gas		1,002	749
Nonregulated electric and other		197	182
Total operating revenues		7,132	6,150
Operating Expenses
Operation, maintenance and other		1,630	1,402
Depreciation and amortization		1,320	1,226
Property and other taxes		392	353
Impairment of assets and other charges		215
Total operating expenses		5,855	4,700
Hide Row		2
Operating Income		1,279	1,450
Other Income and Expenses
Equity in earnings (losses) of unconsolidated affiliates		25	(17)
Other income and expenses, net		89	127
Total other income and expenses		114	110
Interest Expense		587	535
Income Before Income Taxes		806	1,025
Income Tax (Benefit) Expense		(14)	84
Net Income		820	941
Add: Net Loss Attributable to Noncontrolling Interests		37	51
Net Income Attributable to Duke Energy Corporation		857	992
Less: Preferred Dividends		39	39
Net Income Available to Duke Energy Corporation Common Stockholders		818	953
Other Comprehensive Income (Loss), net of tax
Pension and OPEB adjustments	[1]	2	2
Net unrealized (losses) gains on cash flow hedges	[1]	113	29
Unrealized losses on available-for-sale securities	[1]	(13)	(8)
Other Comprehensive Income, net of tax	[1]	107	26
Comprehensive Income		927	967
Add: Comprehensive Loss Attributable to Noncontrolling Interests		(29)	(44)
Comprehensive Income Attributable to Duke Energy		$ 956	$ 1,011
Net income available to Duke Energy Corporation common stockholders
Basic (in usd per share)		$ 1.08	$ 1.25
Diluted (in usd per share)		$ 1.08	$ 1.25
Weighted Average Shares Outstanding
Basic (in shares)		770	769
Diluted (in shares)		770	769
Duke Energy Carolinas
Operating Revenues
Total operating revenues		$ 1,888	$ 1,716
Operating Expenses
Fuel used in electric generation and purchased power/Cost of natural gas		448	422
Operation, maintenance and other		512	441
Depreciation and amortization		379	359
Property and other taxes		93	83
Impairment of assets and other charges		3
Total operating expenses		1,435	1,305
Operating Income		453	411
Other Income and Expenses
Total other income and expenses		55	48
Interest Expense		141	124
Income Before Income Taxes		367	335
Income Tax (Benefit) Expense		27	23
Net Income Attributable to Duke Energy Corporation		340	312
Other Comprehensive Income (Loss), net of tax
Comprehensive Income Attributable to Duke Energy		340	312
Progress Energy
Operating Revenues
Total operating revenues		2,992	2,505
Operating Expenses
Fuel used in electric generation and purchased power/Cost of natural gas		1,064	795
Operation, maintenance and other		645	601
Depreciation and amortization		536	485
Property and other taxes		152	142
Total operating expenses		2,397	2,023
Hide Row		2
Operating Income		597	482
Other Income and Expenses
Total other income and expenses		35	43
Interest Expense		211	192
Income Before Income Taxes		421	333
Income Tax (Benefit) Expense		67	43
Net Income		354	290
Other Comprehensive Income (Loss), net of tax
Net unrealized (losses) gains on cash flow hedges		1	1
Unrealized losses on available-for-sale securities		(2)	(1)
Other Comprehensive Income, net of tax		(1)
Comprehensive Income		353	290
Duke Energy Progress
Operating Revenues
Total operating revenues		1,632	1,401
Operating Expenses
Fuel used in electric generation and purchased power/Cost of natural gas		574	436
Operation, maintenance and other		391	357
Depreciation and amortization		306	285
Property and other taxes		49	49
Total operating expenses		1,320	1,127
Hide Row		1
Operating Income		313	274
Other Income and Expenses
Total other income and expenses		22	24
Interest Expense		85	69
Income Before Income Taxes		250	229
Income Tax (Benefit) Expense		35	19
Net Income Attributable to Duke Energy Corporation		215	210
Other Comprehensive Income (Loss), net of tax
Comprehensive Income Attributable to Duke Energy		215	210
Duke Energy Florida
Operating Revenues
Total operating revenues		1,355	1,101
Operating Expenses
Fuel used in electric generation and purchased power/Cost of natural gas		490	359
Operation, maintenance and other		249	242
Depreciation and amortization		231	200
Property and other taxes		103	93
Total operating expenses		1,073	894
Hide Row		1
Operating Income		283	207
Other Income and Expenses
Total other income and expenses		15	18
Interest Expense		84	80
Income Before Income Taxes		214	145
Income Tax (Benefit) Expense		43	28
Net Income Attributable to Duke Energy Corporation		171	117
Other Comprehensive Income (Loss), net of tax
Unrealized losses on available-for-sale securities		(1)	(1)
Other Comprehensive Income, net of tax		(1)	(1)
Comprehensive Income Attributable to Duke Energy		170	116
Duke Energy Ohio
Operating Revenues
Regulated electric		412	363
Regulated natural gas		226	169
Total operating revenues		638	532
Operating Expenses
Operation, maintenance and other		178	108
Depreciation and amortization		80	74
Property and other taxes		101	92
Total operating expenses		593	407
Operating Income		45	125
Other Income and Expenses
Total other income and expenses		6	5
Interest Expense		30	25
Income Before Income Taxes		21	105
Income Tax (Benefit) Expense		(56)	14
Net Income Attributable to Duke Energy Corporation		77	91
Other Comprehensive Income (Loss), net of tax
Comprehensive Income Attributable to Duke Energy		77	91
Duke Energy Indiana
Operating Revenues
Total operating revenues		822	745
Operating Expenses
Fuel used in electric generation and purchased power/Cost of natural gas		319	217
Operation, maintenance and other		192	178
Depreciation and amortization		156	152
Property and other taxes		25	21
Impairment of assets and other charges		211
Total operating expenses		903	568
Operating Income		(81)	177
Other Income and Expenses
Total other income and expenses		10	9
Interest Expense		45	50
Income Before Income Taxes		(116)	136
Income Tax (Benefit) Expense		(37)	24
Net Income Attributable to Duke Energy Corporation		(79)	112
Other Comprehensive Income (Loss), net of tax
Comprehensive Income Attributable to Duke Energy		(79)	112
Piedmont
Operating Revenues
Total operating revenues		805	606
Operating Expenses
Fuel used in electric generation and purchased power/Cost of natural gas		374	225
Operation, maintenance and other		95	78
Depreciation and amortization		54	48
Property and other taxes		16	14
Total operating expenses		539	365
Operating Income		266	241
Other Income and Expenses
Equity in earnings (losses) of unconsolidated affiliates		2	2
Total other income and expenses		13	17
Interest Expense		32	29
Income Before Income Taxes		247	229
Income Tax (Benefit) Expense		33	26
Net Income Attributable to Duke Energy Corporation		214	203
Other Comprehensive Income (Loss), net of tax
Comprehensive Income Attributable to Duke Energy		214	203
Fuel used in electric generation and purchased power
Operating Expenses
Fuel used in electric generation and purchased power/Cost of natural gas		1,817	1,443
Fuel used in electric generation and purchased power | Duke Energy Ohio
Operating Expenses
Fuel used in electric generation and purchased power/Cost of natural gas		127	82
Cost of natural gas
Operating Expenses
Fuel used in electric generation and purchased power/Cost of natural gas		481	276
Cost of natural gas | Duke Energy Ohio
Operating Expenses
Fuel used in electric generation and purchased power/Cost of natural gas		$ 107	$ 51

[1] Net of income tax impacts of approximately $32 million and $8 million for the three months ended March 31, 2022, and 2021, respectively.

XML

Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2022	Mar. 31, 2021
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest [Abstract]
Net income (loss)		$ 820	$ 941
Other Comprehensive Income (Loss), net of tax
Pension and OPEB adjustments	[1]	2	2
Net unrealized gains on cash flow hedges	[1]	113	29
Reclassification into earnings from cash flow hedges	[1]	5	3
Unrealized losses on available-for-sale securities	[1]	(13)	(8)
Other Comprehensive Income, net of tax	[1]	107	26
Comprehensive Income		927	967
Add: Comprehensive Loss Attributable to Noncontrolling Interests		29	44
Comprehensive Income Attributable to Duke Energy		956	1,011
Less: Preferred Dividends		39	39
Comprehensive Income Available to Duke Energy Corporation Common Stockholders		$ 917	$ 972

[1] Net of income tax impacts of approximately $32 million and $8 million for the three months ended March 31, 2022, and 2021, respectively.

XML

Condensed Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Statement of Comprehensive Income [Abstract]
Other comprehensive income (loss), tax	$ 32	$ 8

XML

Condensed Consolidated Balance Sheets - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Current Assets
Cash and cash equivalents	$ 853	$ 343
Receivables (net of allowance for doubtful accounts)	1,148	1,173
Receivables of VIEs (net of allowance for doubtful accounts)	2,590	2,437
Inventory	3,171	3,199
Regulatory assets (includes amounts related to VIEs)	2,334	2,150
Other (includes amounts related to VIEs)	946	638
Total current assets	11,042	9,940
Property, Plant and Equipment
Cost	163,700	161,819
Accumulated depreciation and amortization	(51,517)	(50,555)
Facilities to be retired, net	133	144
Net property, plant and equipment	112,316	111,408
Other Noncurrent Assets
Goodwill	19,303	19,303
Regulatory assets (includes amounts related to VIEs)	12,506	12,487
Nuclear decommissioning trust funds	9,827	10,401
Operating lease right-of-use assets, net	1,255	1,266
Investments in equity method unconsolidated affiliates	976	970
Other (includes amounts related to VIEs)	3,995	3,812
Total other noncurrent assets	47,862	48,239
Total Assets	171,220	169,587
Current Liabilities
Accounts payable	3,175	3,629
Notes payable and commercial paper	3,262	3,304
Taxes accrued	642	749
Interest accrued	575	533
Current maturities of long-term debt (includes amounts related to VIEs)	3,884	3,387
Asset retirement obligations	648	647
Regulatory liabilities	1,238	1,211
Other	2,001	2,471
Total current liabilities	15,425	15,931
Long-Term Debt (includes amounts related to VIEs)	62,196	60,448
Other Noncurrent Liabilities
Deferred income taxes	9,673	9,379
Asset retirement obligations	12,112	12,129
Regulatory liabilities	16,037	16,152
Operating lease liabilities	1,068	1,074
Accrued pension and other post-retirement benefit costs	832	855
Investment tax credits	831	833
Other (includes amounts related to VIEs)	1,794	1,650
Total other noncurrent liabilities	42,347	42,072
Commitments and Contingencies
Equity
Common stock	1	1
Additional paid-in capital	44,364	44,371
Retained earnings	3,323	3,265
Accumulated other comprehensive loss	(204)	(303)
Total Duke Energy Corporation stockholders' equity	49,446	49,296
Noncontrolling interests	1,806	1,840
Total equity	51,252	51,136
Total Liabilities and Equity	171,220	169,587
Variable Interest Entity
Current Assets
Regulatory assets (includes amounts related to VIEs)	105	105
Other (includes amounts related to VIEs)	249	256
Other Noncurrent Assets
Regulatory assets (includes amounts related to VIEs)	1,800	1,823
Other (includes amounts related to VIEs)	111	92
Current Liabilities
Current maturities of long-term debt (includes amounts related to VIEs)	395	243
Long-Term Debt (includes amounts related to VIEs)	4,687	4,854
Other Noncurrent Liabilities
Other (includes amounts related to VIEs)	360	319
Duke Energy Carolinas
Current Assets
Cash and cash equivalents	4	7
Receivables (net of allowance for doubtful accounts)	858	844
Receivables of VIEs (net of allowance for doubtful accounts)	234	300
Receivables from affiliated companies	134	190
Notes receivable from affiliated companies	492
Inventory	1,040	1,026
Regulatory assets (includes amounts related to VIEs)	652	544
Other (includes amounts related to VIEs)	246	95
Total current assets	3,660	3,006
Property, Plant and Equipment
Cost	52,423	51,874
Accumulated depreciation and amortization	(18,058)	(17,854)
Facilities to be retired, net	98	102
Net property, plant and equipment	34,463	34,122
Other Noncurrent Assets
Regulatory assets (includes amounts related to VIEs)	3,085	2,935
Nuclear decommissioning trust funds	5,441	5,759
Operating lease right-of-use assets, net	87	92
Other (includes amounts related to VIEs)	1,297	1,248
Total other noncurrent assets	9,910	10,034
Total Assets	48,033	47,162
Current Liabilities
Accounts payable	752	988
Accounts payable to affiliated companies	267	266
Notes payable to affiliated companies		226
Taxes accrued	124	274
Interest accrued	140	125
Current maturities of long-term debt (includes amounts related to VIEs)	1,367	362
Asset retirement obligations	251	249
Regulatory liabilities	465	487
Other	442	546
Total current liabilities	3,808	3,523
Long-Term Debt (includes amounts related to VIEs)	12,803	12,595
Long-Term Debt Payable to Affiliated Companies	300	318
Other Noncurrent Liabilities
Deferred income taxes	3,769	3,634
Asset retirement obligations	5,067	5,052
Regulatory liabilities	7,151	7,198
Operating lease liabilities	74	78
Accrued pension and other post-retirement benefit costs	48	50
Investment tax credits	286	287
Other (includes amounts related to VIEs)	545	536
Total other noncurrent liabilities	16,940	16,835
Commitments and Contingencies
Equity
Member's equity	14,188	13,897
Accumulated other comprehensive loss	(6)	(6)
Member's Equity	14,182	13,891
Total Liabilities and Equity	48,033	47,162
Duke Energy Carolinas | Variable Interest Entity
Current Assets
Regulatory assets (includes amounts related to VIEs)	12	12
Other (includes amounts related to VIEs)	5	0
Other Noncurrent Assets
Regulatory assets (includes amounts related to VIEs)	217	220
Current Liabilities
Current maturities of long-term debt (includes amounts related to VIEs)	10	5
Long-Term Debt (includes amounts related to VIEs)	722	703
Progress Energy
Current Assets
Cash and cash equivalents	63	70
Receivables (net of allowance for doubtful accounts)	1,166	1,006
Receivables of VIEs (net of allowance for doubtful accounts)	286	247
Receivables from affiliated companies	37	121
Notes receivable from affiliated companies	237
Inventory	1,403	1,398
Regulatory assets (includes amounts related to VIEs)	1,101	1,030
Other (includes amounts related to VIEs)	319	125
Total current assets	4,612	3,997
Property, Plant and Equipment
Cost	61,629	60,894
Accumulated depreciation and amortization	(19,702)	(19,214)
Facilities to be retired, net	24	26
Net property, plant and equipment	41,951	41,706
Other Noncurrent Assets
Goodwill	3,655	3,655
Regulatory assets (includes amounts related to VIEs)	6,024	5,909
Nuclear decommissioning trust funds	4,385	4,642
Operating lease right-of-use assets, net	701	691
Other (includes amounts related to VIEs)	1,336	1,242
Total other noncurrent assets	16,101	16,139
Total Assets	62,664	61,842
Current Liabilities
Accounts payable	982	1,099
Accounts payable to affiliated companies	364	506
Notes payable to affiliated companies	377	2,809
Taxes accrued	157	128
Interest accrued	195	192
Current maturities of long-term debt (includes amounts related to VIEs)	1,095	1,082
Asset retirement obligations	268	275
Regulatory liabilities	469	478
Other	760	868
Total current liabilities	4,667	7,437
Long-Term Debt (includes amounts related to VIEs)	20,412	19,591
Long-Term Debt Payable to Affiliated Companies	150	150
Other Noncurrent Liabilities
Deferred income taxes	4,702	4,564
Asset retirement obligations	5,821	5,837
Regulatory liabilities	5,671	5,566
Operating lease liabilities	619	606
Accrued pension and other post-retirement benefit costs	409	417
Other (includes amounts related to VIEs)	531	526
Total other noncurrent liabilities	17,753	17,516
Commitments and Contingencies
Equity
Additional paid-in capital	9,149	9,149
Retained earnings	10,543	8,007
Accumulated other comprehensive loss	(12)	(11)
Total Duke Energy Corporation stockholders' equity	19,680	17,145
Noncontrolling interests	2	3
Total equity	19,682	17,148
Total Liabilities and Equity	62,664	61,842
Progress Energy | Variable Interest Entity
Current Assets
Regulatory assets (includes amounts related to VIEs)	93
Other (includes amounts related to VIEs)	27	39
Other Noncurrent Assets
Regulatory assets (includes amounts related to VIEs)	1,583	1,603
Current Liabilities
Current maturities of long-term debt (includes amounts related to VIEs)	88	71
Long-Term Debt (includes amounts related to VIEs)	2,246	2,293
Duke Energy Progress
Current Assets
Cash and cash equivalents	42	35
Receivables (net of allowance for doubtful accounts)	658	574
Receivables of VIEs (net of allowance for doubtful accounts)	188	127
Receivables from affiliated companies	20	65
Notes receivable from affiliated companies	328
Inventory	940	921
Regulatory assets (includes amounts related to VIEs)	595	533
Other (includes amounts related to VIEs)	200	83
Total current assets	2,971	2,338
Property, Plant and Equipment
Cost	37,361	37,018
Accumulated depreciation and amortization	(13,691)	(13,387)
Facilities to be retired, net	24	26
Net property, plant and equipment	23,694	23,657
Other Noncurrent Assets
Regulatory assets (includes amounts related to VIEs)	4,124	4,118
Nuclear decommissioning trust funds	3,872	4,089
Operating lease right-of-use assets, net	410	389
Other (includes amounts related to VIEs)	867	792
Total other noncurrent assets	9,273	9,388
Total Assets	35,938	35,383
Current Liabilities
Accounts payable	450	476
Accounts payable to affiliated companies	260	310
Notes payable to affiliated companies		172
Taxes accrued	77	163
Interest accrued	76	96
Current maturities of long-term debt (includes amounts related to VIEs)	568	556
Asset retirement obligations	268	274
Regulatory liabilities	378	381
Other	400	448
Total current liabilities	2,477	2,876
Long-Term Debt (includes amounts related to VIEs)	10,396	9,543
Long-Term Debt Payable to Affiliated Companies	150	150
Other Noncurrent Liabilities
Deferred income taxes	2,275	2,208
Asset retirement obligations	5,411	5,401
Regulatory liabilities	4,898	4,868
Operating lease liabilities	372	350
Accrued pension and other post-retirement benefit costs	218	221
Investment tax credits	128	128
Other (includes amounts related to VIEs)	96	87
Total other noncurrent liabilities	13,398	13,263
Commitments and Contingencies
Equity
Member's Equity	9,517	9,551
Total Liabilities and Equity	35,938	35,383
Duke Energy Progress | Variable Interest Entity
Current Assets
Regulatory assets (includes amounts related to VIEs)	39	39
Other (includes amounts related to VIEs)	14
Other Noncurrent Assets
Regulatory assets (includes amounts related to VIEs)	711	720
Current Liabilities
Current maturities of long-term debt (includes amounts related to VIEs)	32	15
Long-Term Debt (includes amounts related to VIEs)	1,080	1,097
Duke Energy Florida
Current Assets
Cash and cash equivalents	13	23
Receivables (net of allowance for doubtful accounts)	508	432
Receivables of VIEs (net of allowance for doubtful accounts)	97	117
Receivables from affiliated companies	16	16
Inventory	463	477
Regulatory assets (includes amounts related to VIEs)	505	497
Other (includes amounts related to VIEs)	79	80
Total current assets	1,681	1,642
Property, Plant and Equipment
Cost	24,257	23,865
Accumulated depreciation and amortization	(6,003)	(5,819)
Net property, plant and equipment	18,254	18,046
Other Noncurrent Assets
Regulatory assets (includes amounts related to VIEs)	1,899	1,791
Nuclear decommissioning trust funds	514	553
Operating lease right-of-use assets, net	291	302
Other (includes amounts related to VIEs)	418	399
Total other noncurrent assets	3,122	3,045
Total Assets	23,057	22,733
Current Liabilities
Accounts payable	532	623
Accounts payable to affiliated companies	120	209
Notes payable to affiliated companies	468	199
Taxes accrued	96	51
Interest accrued	84	68
Current maturities of long-term debt (includes amounts related to VIEs)	77	76
Asset retirement obligations	1	1
Regulatory liabilities	91	98
Other	349	408
Total current liabilities	1,818	1,733
Long-Term Debt (includes amounts related to VIEs)	8,374	8,406
Other Noncurrent Liabilities
Deferred income taxes	2,503	2,434
Asset retirement obligations	411	436
Regulatory liabilities	772	698
Operating lease liabilities	247	256
Accrued pension and other post-retirement benefit costs	161	166
Other (includes amounts related to VIEs)	306	309
Total other noncurrent liabilities	4,400	4,299
Commitments and Contingencies
Equity
Member's equity	8,469	8,298
Accumulated other comprehensive loss	(4)	(3)
Member's Equity	8,465	8,295
Total Liabilities and Equity	23,057	22,733
Duke Energy Florida | Variable Interest Entity
Current Assets
Regulatory assets (includes amounts related to VIEs)	54	54
Other (includes amounts related to VIEs)	13	39
Other Noncurrent Assets
Regulatory assets (includes amounts related to VIEs)	872	883
Current Liabilities
Current maturities of long-term debt (includes amounts related to VIEs)	56	56
Long-Term Debt (includes amounts related to VIEs)	1,166	1,196
Duke Energy Ohio
Current Assets
Cash and cash equivalents	15	13
Receivables of VIEs (net of allowance for doubtful accounts)	101	96
Receivables from affiliated companies	93	122
Notes receivable from affiliated companies		15
Inventory	114	116
Regulatory assets (includes amounts related to VIEs)	60	72
Other (includes amounts related to VIEs)	23	57
Total current assets	406	491
Property, Plant and Equipment
Cost	11,818	11,725
Accumulated depreciation and amortization	(3,102)	(3,106)
Facilities to be retired, net		6
Net property, plant and equipment	8,716	8,625
Other Noncurrent Assets
Goodwill	920	920
Regulatory assets (includes amounts related to VIEs)	584	635
Operating lease right-of-use assets, net	18	19
Other (includes amounts related to VIEs)	87	84
Total other noncurrent assets	1,609	1,658
Total Assets	10,731	10,774
Current Liabilities
Accounts payable	379	348
Accounts payable to affiliated companies	68	64
Notes payable to affiliated companies	123	103
Taxes accrued	219	275
Interest accrued	32	30
Asset retirement obligations	13	13
Regulatory liabilities	67	62
Other	73	82
Total current liabilities	974	977
Long-Term Debt (includes amounts related to VIEs)	3,168	3,168
Long-Term Debt Payable to Affiliated Companies	25	25
Other Noncurrent Liabilities
Deferred income taxes	1,078	1,050
Asset retirement obligations	124	123
Regulatory liabilities	593	739
Operating lease liabilities	18	18
Accrued pension and other post-retirement benefit costs	109	109
Other (includes amounts related to VIEs)	100	101
Total other noncurrent liabilities	2,022	2,140
Commitments and Contingencies
Equity
Common stock	762	762
Additional paid-in capital	3,100	3,100
Retained earnings	680	602
Total Duke Energy Corporation stockholders' equity	4,542	4,464
Total Liabilities and Equity	10,731	10,774
Duke Energy Indiana
Current Assets
Cash and cash equivalents	19	6
Receivables of VIEs (net of allowance for doubtful accounts)	83	100
Receivables from affiliated companies	69	98
Notes receivable from affiliated companies	20	134
Inventory	430	418
Regulatory assets (includes amounts related to VIEs)	301	277
Other (includes amounts related to VIEs)	72	68
Total current assets	994	1,101
Property, Plant and Equipment
Cost	17,494	17,343
Accumulated depreciation and amortization	(5,693)	(5,583)
Net property, plant and equipment	11,801	11,760
Other Noncurrent Assets
Regulatory assets (includes amounts related to VIEs)	1,077	1,278
Operating lease right-of-use assets, net	52	53
Other (includes amounts related to VIEs)	295	296
Total other noncurrent assets	1,424	1,627
Total Assets	14,219	14,488
Current Liabilities
Accounts payable	268	282
Accounts payable to affiliated companies	187	221
Taxes accrued	131	73
Interest accrued	56	49
Current maturities of long-term debt (includes amounts related to VIEs)	31	84
Asset retirement obligations	115	110
Regulatory liabilities	140	127
Other	108	105
Total current liabilities	1,036	1,051
Long-Term Debt (includes amounts related to VIEs)	4,089	4,089
Long-Term Debt Payable to Affiliated Companies	150	150
Other Noncurrent Liabilities
Deferred income taxes	1,234	1,303
Asset retirement obligations	861	877
Regulatory liabilities	1,557	1,565
Operating lease liabilities	49	50
Accrued pension and other post-retirement benefit costs	168	167
Investment tax credits	177	177
Other (includes amounts related to VIEs)	74	44
Total other noncurrent liabilities	4,120	4,183
Commitments and Contingencies
Equity
Member's Equity	4,824	5,015
Total Liabilities and Equity	14,219	14,488
Piedmont
Current Assets
Receivables of VIEs (net of allowance for doubtful accounts)	303	318
Receivables from affiliated companies	13	11
Inventory	51	109
Regulatory assets (includes amounts related to VIEs)	133	141
Other (includes amounts related to VIEs)	16	9
Total current assets	516	588
Property, Plant and Equipment
Cost	10,110	9,918
Accumulated depreciation and amortization	(1,952)	(1,899)
Facilities to be retired, net	10	11
Net property, plant and equipment	8,168	8,030
Other Noncurrent Assets
Goodwill	49	49
Regulatory assets (includes amounts related to VIEs)	349	316
Operating lease right-of-use assets, net	15	16
Investments in equity method unconsolidated affiliates	97	95
Other (includes amounts related to VIEs)	307	288
Total other noncurrent assets	817	764
Total Assets	9,501	9,382
Current Liabilities
Accounts payable	170	196
Accounts payable to affiliated companies	52	40
Notes payable to affiliated companies	360	518
Taxes accrued	79	63
Interest accrued	35	37
Regulatory liabilities	98	56
Other	73	81
Total current liabilities	867	991
Long-Term Debt (includes amounts related to VIEs)	2,969	2,968
Other Noncurrent Liabilities
Deferred income taxes	831	815
Asset retirement obligations	22	22
Regulatory liabilities	1,041	1,058
Operating lease liabilities	13	14
Accrued pension and other post-retirement benefit costs	7	7
Other (includes amounts related to VIEs)	188	158
Total other noncurrent liabilities	2,102	2,074
Commitments and Contingencies
Equity
Common stock	1,635	1,635
Retained earnings	1,928	1,714
Total Duke Energy Corporation stockholders' equity	3,563	3,349
Total Liabilities and Equity	9,501	9,382
Preferred stock, Series A
Equity
Preferred stock	973	973
Preferred stock, Series B
Equity
Preferred stock	$ 989	$ 989

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Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Allowance for doubtful accounts - receivables	$ 68	$ 46
Regulatory assets (includes amounts related to VIEs)	2,334	2,150
Current Assets: Other	946	638
Regulatory assets (includes amounts related to VIEs)	12,506	12,487
Other Noncurrent Assets: Other	3,995	3,812
Current maturities of long-term debt (includes amounts related to VIEs)	3,884	3,387
Long-Term Debt	62,196	60,448
Other, noncurrent liabilities	$ 1,794	$ 1,650
Common stock, par value (in usd per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	2,000,000,000	2,000,000,000
Common stock, shares outstanding (in shares)	770,000,000	769,000,000
Preferred stock, Series A
Preferred stock, par value (in usd per share)	$ 0.001	$ 0.001
Preferred stock, depositary shares authorized (in shares)	40,000,000	40,000,000
Preferred stock, depositary shares outstanding (in shares)	40,000,000	40,000,000
Preferred stock, Series B
Preferred stock, par value (in usd per share)	$ 0.001	$ 0.001
Preferred stock, depositary shares authorized (in shares)	1,000,000	1,000,000
Preferred stock, depositary shares outstanding (in shares)	1,000,000	1,000,000
Variable Interest Entity
Allowance for doubtful accounts - receivables of VIEs	$ 72	$ 76
Regulatory assets (includes amounts related to VIEs)	105	105
Current Assets: Other	249	256
Regulatory assets (includes amounts related to VIEs)	1,800	1,823
Other Noncurrent Assets: Other	111	92
Current maturities of long-term debt (includes amounts related to VIEs)	395	243
Long-Term Debt	4,687	4,854
Other, noncurrent liabilities	360	319
Duke Energy Carolinas
Allowance for doubtful accounts - receivables	22	1
Allowance for doubtful accounts - receivables of VIEs	30	41
Regulatory assets (includes amounts related to VIEs)	652	544
Current Assets: Other	246	95
Regulatory assets (includes amounts related to VIEs)	3,085	2,935
Other Noncurrent Assets: Other	1,297	1,248
Current maturities of long-term debt (includes amounts related to VIEs)	1,367	362
Long-Term Debt	12,803	12,595
Other, noncurrent liabilities	545	536
Duke Energy Carolinas | Variable Interest Entity
Regulatory assets (includes amounts related to VIEs)	12	12
Current Assets: Other	5	0
Regulatory assets (includes amounts related to VIEs)	217	220
Current maturities of long-term debt (includes amounts related to VIEs)	10	5
Long-Term Debt	722	703
Progress Energy
Allowance for doubtful accounts - receivables	11	11
Regulatory assets (includes amounts related to VIEs)	1,101	1,030
Current Assets: Other	319	125
Regulatory assets (includes amounts related to VIEs)	6,024	5,909
Other Noncurrent Assets: Other	1,336	1,242
Current maturities of long-term debt (includes amounts related to VIEs)	1,095	1,082
Long-Term Debt	20,412	19,591
Other, noncurrent liabilities	$ 531	$ 526
Common stock, par value (in usd per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	100	100
Common stock, shares outstanding (in shares)	100	100
Progress Energy | Variable Interest Entity
Allowance for doubtful accounts - receivables of VIEs	$ 40	$ 25
Regulatory assets (includes amounts related to VIEs)	93
Current Assets: Other	27	39
Regulatory assets (includes amounts related to VIEs)	1,583	1,603
Current maturities of long-term debt (includes amounts related to VIEs)	88	71
Long-Term Debt	2,246	2,293
Duke Energy Progress
Allowance for doubtful accounts - receivables	4	4
Regulatory assets (includes amounts related to VIEs)	595	533
Current Assets: Other	200	83
Regulatory assets (includes amounts related to VIEs)	4,124	4,118
Other Noncurrent Assets: Other	867	792
Current maturities of long-term debt (includes amounts related to VIEs)	568	556
Long-Term Debt	10,396	9,543
Other, noncurrent liabilities	96	87
Duke Energy Progress | Variable Interest Entity
Allowance for doubtful accounts - receivables of VIEs	27	17
Regulatory assets (includes amounts related to VIEs)	39	39
Current Assets: Other	14
Regulatory assets (includes amounts related to VIEs)	711	720
Current maturities of long-term debt (includes amounts related to VIEs)	32	15
Long-Term Debt	1,080	1,097
Duke Energy Florida
Allowance for doubtful accounts - receivables	8	8
Regulatory assets (includes amounts related to VIEs)	505	497
Current Assets: Other	79	80
Regulatory assets (includes amounts related to VIEs)	1,899	1,791
Other Noncurrent Assets: Other	418	399
Current maturities of long-term debt (includes amounts related to VIEs)	77	76
Long-Term Debt	8,374	8,406
Other, noncurrent liabilities	306	309
Duke Energy Florida | Variable Interest Entity
Allowance for doubtful accounts - receivables of VIEs	13	8
Regulatory assets (includes amounts related to VIEs)	54	54
Current Assets: Other	13	39
Regulatory assets (includes amounts related to VIEs)	872	883
Current maturities of long-term debt (includes amounts related to VIEs)	56	56
Long-Term Debt	1,166	1,196
Duke Energy Ohio
Allowance for doubtful accounts - receivables	4	4
Regulatory assets (includes amounts related to VIEs)	60	72
Current Assets: Other	23	57
Regulatory assets (includes amounts related to VIEs)	584	635
Other Noncurrent Assets: Other	87	84
Long-Term Debt	3,168	3,168
Other, noncurrent liabilities	$ 100	$ 101
Common stock, par value (in usd per share)	$ 8.50	$ 8.50
Common stock, shares authorized (in shares)	120,000,000	120,000,000
Common stock, shares outstanding (in shares)	90,000,000	90,000,000
Duke Energy Indiana
Allowance for doubtful accounts - receivables	$ 3	$ 3
Regulatory assets (includes amounts related to VIEs)	301	277
Current Assets: Other	72	68
Regulatory assets (includes amounts related to VIEs)	1,077	1,278
Other Noncurrent Assets: Other	295	296
Current maturities of long-term debt (includes amounts related to VIEs)	31	84
Long-Term Debt	4,089	4,089
Other, noncurrent liabilities	74	44
Piedmont
Allowance for doubtful accounts - receivables	17	15
Regulatory assets (includes amounts related to VIEs)	133	141
Current Assets: Other	16	9
Regulatory assets (includes amounts related to VIEs)	349	316
Other Noncurrent Assets: Other	307	288
Long-Term Debt	2,969	2,968
Other, noncurrent liabilities	$ 188	$ 158
Common stock, shares authorized (in shares)	100,000,000	100,000,000
Common stock, shares outstanding (in shares)	100,000,000	100,000,000

XML

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 820	$ 941
Net income	857	992
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and accretion (including amortization of nuclear fuel)	1,480	1,385
Equity in (earnings) losses of unconsolidated affiliates	(25)	17
Equity component of AFUDC	(46)	(42)
Impairment of assets and other charges	215
Deferred income taxes	(11)	86
Payments for asset retirement obligations	(119)	(114)
Provision for rate refunds	(31)
(Increase) decrease in
Net realized and unrealized mark-to-market and hedging transactions	215
Receivables	5	377
Inventory	28	91
Other current assets	(327)	(47)
Increase (decrease) in
Accounts payable	(160)	(467)
Taxes accrued	(90)	104
Other current liabilities	(269)	(263)
Other assets	(26)	51
Other liabilities	136	(31)
Net cash provided by operating activities	1,795	2,088
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(2,551)	(2,215)
Contributions to equity method investments	(17)
Purchases of debt and equity securities	(1,516)	(1,584)
Proceeds from sales and maturities of debt and equity securities	1,530	1,601
Disbursements to canceled equity method investments		(855)
Other	(145)	(84)
Net cash used in investing activities	(2,699)	(3,137)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from the issuance of long-term debt	3,506	608
Proceeds from the issuance of common stock		5
Payments for the redemption of long-term debt	(1,215)	(76)
Proceeds from the issuance of short-term debt with original maturities greater than 90 days		50
Payments for the redemption of short-term debt with original maturities greater than 90 days	(257)	(909)
Notes payable and commercial paper	213	2,046
Contributions from noncontrolling interests	23	303
Dividends paid	(799)	(783)
Other	(67)	(59)
Net cash provided by financing activities	1,404	1,185
Net increase in cash, cash equivalents and restricted cash	500	136
Cash, cash equivalents and restricted cash at beginning of period	520	556
Cash, cash equivalents and restricted cash at end of period	1,020	692
Significant non-cash transactions:
Accrued capital expenditures	1,028	921
Duke Energy Carolinas
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	340	312
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and accretion (including amortization of nuclear fuel)	447	428
Equity component of AFUDC	(22)	(16)
Impairment of assets and other charges	3
Deferred income taxes	44	(8)
Payments for asset retirement obligations	(35)	(35)
Provision for rate refunds	(18)
(Increase) decrease in
Net realized and unrealized mark-to-market and hedging transactions	50
Receivables	77	156
Receivables from affiliated companies	56	5
Inventory	(13)	(11)
Other current assets	(230)	(48)
Increase (decrease) in
Accounts payable	(225)	(255)
Accounts payable to affiliated companies	(17)	7
Taxes accrued	(150)	62
Other current liabilities	56	(77)
Other assets	6	43
Other liabilities	(44)	(17)
Net cash provided by operating activities	325	546
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(717)	(622)
Purchases of debt and equity securities	(1,008)	(1,128)
Proceeds from sales and maturities of debt and equity securities	1,008	1,128
Notes receivable from affiliated companies	(492)
Other	(54)	(43)
Net cash used in investing activities	(1,263)	(665)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from the issuance of long-term debt	1,217	142
Payments for the redemption of long-term debt	(1)	(33)
Notes payable to affiliated companies	(226)	2
Distributions to parent	(50)
Other	(1)	(1)
Net cash provided by financing activities	939	110
Net increase in cash, cash equivalents and restricted cash	1	(9)
Cash, cash equivalents and restricted cash at beginning of period	8	21
Cash, cash equivalents and restricted cash at end of period	9	12
Significant non-cash transactions:
Accrued capital expenditures	352	268
Progress Energy
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	354	290
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and accretion (including amortization of nuclear fuel)	625	575
Equity component of AFUDC	(12)	(13)
Deferred income taxes	72	79
Payments for asset retirement obligations	(68)	(69)
Provision for rate refunds	(16)
(Increase) decrease in
Net realized and unrealized mark-to-market and hedging transactions	164	6
Receivables	(123)	214
Receivables from affiliated companies	102	81
Inventory	(5)	39
Other current assets	(224)	(150)
Increase (decrease) in
Accounts payable	26	(69)
Accounts payable to affiliated companies	(142)	32
Taxes accrued	30	23
Other current liabilities	(113)	(60)
Other assets	(80)	(27)
Other liabilities	40	(64)
Net cash provided by operating activities	630	887
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(981)	(796)
Purchases of debt and equity securities	(531)	(517)
Proceeds from sales and maturities of debt and equity securities	548	537
Notes receivable from affiliated companies	(237)
Other	(28)	(59)
Net cash used in investing activities	(1,229)	(835)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from the issuance of long-term debt	889	98
Payments for the redemption of long-term debt	(54)	(34)
Notes payable to affiliated companies	(1)	(125)
Dividends to parent	(250)
Other	(3)	(2)
Net cash provided by financing activities	581	(63)
Net increase in cash, cash equivalents and restricted cash	(18)	(11)
Cash, cash equivalents and restricted cash at beginning of period	113	200
Cash, cash equivalents and restricted cash at end of period	95	189
Significant non-cash transactions:
Accrued capital expenditures	349	317
Duke Energy Progress
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	215	210
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and accretion (including amortization of nuclear fuel)	350	331
Equity component of AFUDC	(7)	(8)
Deferred income taxes	19	6
Payments for asset retirement obligations	(41)	(46)
Provision for rate refunds	(16)
(Increase) decrease in
Net realized and unrealized mark-to-market and hedging transactions	164	2
Receivables	(70)	131
Receivables from affiliated companies	63	(20)
Inventory	(19)	29
Other current assets	(75)	(21)
Increase (decrease) in
Accounts payable	18	(62)
Accounts payable to affiliated companies	(50)	10
Taxes accrued	(85)	(12)
Other current liabilities	(67)	(25)
Other assets	(56)	(35)
Other liabilities	47	(15)
Net cash provided by operating activities	390	475
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(467)	(400)
Purchases of debt and equity securities	(481)	(382)
Proceeds from sales and maturities of debt and equity securities	480	380
Notes receivable from affiliated companies	(328)
Other	(19)	(29)
Net cash used in investing activities	(815)	(431)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from the issuance of long-term debt	889	98
Payments for the redemption of long-term debt	(21)	(2)
Notes payable to affiliated companies	(172)	(132)
Distributions to parent	(250)
Other	(1)	(1)
Net cash provided by financing activities	445	(37)
Net increase in cash, cash equivalents and restricted cash	20	7
Cash, cash equivalents and restricted cash at beginning of period	39	39
Cash, cash equivalents and restricted cash at end of period	59	46
Significant non-cash transactions:
Accrued capital expenditures	111	96
Duke Energy Florida
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	171	117
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and accretion (including amortization of nuclear fuel)	273	243
Equity component of AFUDC	(5)	(4)
Deferred income taxes	52	74
Payments for asset retirement obligations	(28)	(24)
(Increase) decrease in
Net realized and unrealized mark-to-market and hedging transactions		2
Receivables	(54)	83
Receivables from affiliated companies		(4)
Inventory	14	10
Other current assets	(72)	(101)
Increase (decrease) in
Accounts payable	9	(7)
Accounts payable to affiliated companies	(89)	23
Taxes accrued	45	3
Other current liabilities	(52)	(41)
Other assets	(24)	12
Other liabilities	(6)	(48)
Net cash provided by operating activities	234	338
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(514)	(396)
Purchases of debt and equity securities	(49)	(134)
Proceeds from sales and maturities of debt and equity securities	69	157
Other	(10)	(30)
Net cash used in investing activities	(504)	(403)
CASH FLOWS FROM FINANCING ACTIVITIES
Payments for the redemption of long-term debt	(34)	(33)
Notes payable to affiliated companies	269	83
Other	(1)
Net cash provided by financing activities	234	50
Net increase in cash, cash equivalents and restricted cash	(36)	(15)
Cash, cash equivalents and restricted cash at beginning of period	62	50
Cash, cash equivalents and restricted cash at end of period	26	35
Significant non-cash transactions:
Accrued capital expenditures	237	222
Duke Energy Ohio
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	77	91
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and accretion (including amortization of nuclear fuel)	81	75
Equity component of AFUDC	(3)	(2)
Deferred income taxes	(51)	12
Provision for rate refunds	5
(Increase) decrease in
Receivables	(5)
Receivables from affiliated companies	15	5
Inventory	2	2
Other current assets	48	(5)
Increase (decrease) in
Accounts payable	88	8
Accounts payable to affiliated companies		(12)
Taxes accrued	(56)	(55)
Other current liabilities	(89)	(8)
Other assets	(17)	(16)
Other liabilities	74	1
Net cash provided by operating activities	169	96
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(210)	(220)
Notes receivable from affiliated companies	29	37
Other	(6)	(10)
Net cash used in investing activities	(187)	(193)
CASH FLOWS FROM FINANCING ACTIVITIES
Notes payable to affiliated companies	21	101
Other	(1)
Net cash provided by financing activities	20	101
Net increase in cash, cash equivalents and restricted cash	2	4
Cash, cash equivalents and restricted cash at beginning of period	13	14
Cash, cash equivalents and restricted cash at end of period	15	18
Significant non-cash transactions:
Accrued capital expenditures	82	84
Duke Energy Indiana
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	(79)	112
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and accretion (including amortization of nuclear fuel)	157	153
Equity component of AFUDC	(7)	(5)
Impairment of assets and other charges	211
Deferred income taxes	(81)	(12)
Payments for asset retirement obligations	(15)	(10)
(Increase) decrease in
Net realized and unrealized mark-to-market and hedging transactions		1
Receivables	4	(9)
Receivables from affiliated companies	12
Inventory	(12)	38
Other current assets	(22)	(23)
Increase (decrease) in
Accounts payable	19	1
Accounts payable to affiliated companies	(22)	(16)
Taxes accrued	74	71
Other current liabilities	14	20
Other assets	(10)	3
Other liabilities	50	12
Net cash provided by operating activities	293	336
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(212)	(186)
Purchases of debt and equity securities	(16)	(5)
Proceeds from sales and maturities of debt and equity securities	13	4
Notes receivable from affiliated companies		(1)
Notes receivable from affiliated companies	131
Other	(17)	(7)
Net cash used in investing activities	(101)	(195)
CASH FLOWS FROM FINANCING ACTIVITIES
Payments for the redemption of long-term debt	(53)
Notes payable to affiliated companies		(131)
Distributions to parent	(125)
Other	(1)
Net cash provided by financing activities	(179)	(131)
Net increase in cash, cash equivalents and restricted cash	13	10
Cash, cash equivalents and restricted cash at beginning of period	6	7
Cash, cash equivalents and restricted cash at end of period	19	17
Significant non-cash transactions:
Accrued capital expenditures	82	74
Piedmont
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	214	203
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and accretion (including amortization of nuclear fuel)	55	48
Equity in (earnings) losses of unconsolidated affiliates	(2)	(2)
Equity component of AFUDC	(1)	(6)
Deferred income taxes	(11)	(12)
Provision for rate refunds	(2)
(Increase) decrease in
Receivables	15	(8)
Receivables from affiliated companies	(2)
Inventory	58	31
Other current assets	7	66
Increase (decrease) in
Accounts payable	(16)	(63)
Accounts payable to affiliated companies	12	(21)
Taxes accrued	16	45
Other current liabilities	36	(16)
Other assets	(13)	2
Other liabilities		(2)
Net cash provided by operating activities	366	265
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(199)	(200)
Notes receivable from affiliated companies		(198)
Other	(8)	(8)
Net cash used in investing activities	(207)	(406)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from the issuance of long-term debt		347
Notes payable to affiliated companies	(158)	(530)
Other	(1)
Capital contributions from parent		325
Net cash provided by financing activities	(159)	142
Net increase in cash, cash equivalents and restricted cash		1
Cash, cash equivalents and restricted cash at end of period		1
Significant non-cash transactions:
Accrued capital expenditures	$ 87	$ 106

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Condensed Consolidated Statements of Changes in Equity - USD ($) $ in Millions		Total		Preferred Stock	Common Stockholders' Equity	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive (Loss) Income, Net (Losses) Gains on Cash Flow Hedges	Accumulated Other Comprehensive (Loss) Income, Net Unrealized (Losses) Gains on Available-for-Sale-Securities	Accumulated Other Comprehensive (Loss) Income, Pension and OPEB Adjustments	Noncontrolling Interests	Duke Energy Carolinas	Duke Energy Carolinas Member's Equity	Duke Energy Carolinas Accumulated Other Comprehensive (Loss) Income, Net (Losses) Gains on Cash Flow Hedges	Progress Energy	Progress Energy Common Stockholders' Equity	Progress Energy Additional Paid-in Capital	Progress Energy Retained Earnings	Progress Energy Accumulated Other Comprehensive (Loss) Income, Net (Losses) Gains on Cash Flow Hedges	Progress Energy Accumulated Other Comprehensive (Loss) Income, Net Unrealized (Losses) Gains on Available-for-Sale-Securities	Progress Energy Accumulated Other Comprehensive (Loss) Income, Pension and OPEB Adjustments	Progress Energy Noncontrolling Interests	Duke Energy Progress	Duke Energy Progress Member's Equity	Duke Energy Florida	Duke Energy Florida Member's Equity	Duke Energy Florida Accumulated Other Comprehensive (Loss) Income, Net Unrealized (Losses) Gains on Available-for-Sale-Securities	Duke Energy Ohio	Duke Energy Ohio Common Stock	Duke Energy Ohio Additional Paid-in Capital	Duke Energy Ohio Retained Earnings	Duke Energy Indiana	Duke Energy Indiana Member's Equity	Piedmont	Piedmont Common Stock	Piedmont Retained Earnings	Common Stock	Common Stock Common Stockholders' Equity	Common Stock Common Stock	Common Stock Additional Paid-in Capital
Beginning Balance at Dec. 31, 2020		$ 49,184		$ 1,962	$ 47,964	$ 43,767	$ 2,471	$ (167)	$ 6	$ (76)	$ 1,220				$ 16,241	$ 16,237	$ 9,143	$ 7,109	$ (5)	$ (2)	$ (8)	$ 4																	$ 1
Beginning Balance, in shares at Dec. 31, 2020																																							769,000,000
Beginning Balance (member's equity) at Dec. 31, 2020												$ 13,154	$ 13,161	$ (7)										$ 9,260	$ 7,558	$ 7,560	$ (2)						$ 4,783
Beginning Balance (parent) at Dec. 31, 2020																												$ 3,935	$ 762	$ 2,776	$ 397			$ 2,715	$ 1,310	$ 1,405
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)		902			953		953				(51)
Net income (loss)		992										312	312										$ 210	210	117	117		91			91	$ 112	112	203		203
Net income		941													290	290		290
Other comprehensive income (loss)		26	[1]		19			25	(8)	2	7								1	(1)					(1)		(1)
Common stock issuances, including dividend reinvestment and employee benefits																																					$ (3)	$ (3)		$ (3)
Common stock dividends		(744)			(744)		(744)
Contributions from noncontrolling interests, net of transaction costs	[2]	300			(3)	(3)					303
Distributions to noncontrolling interest in subsidiaries		(7)									(7)				(1)							(1)
Other																1		1				(1)											1
Contribution from parent																																		325	325
Ending Balance at Mar. 31, 2021		49,658		1,962	48,186	43,761	2,680	(142)	(2)	(74)	1,472				16,530	16,528	9,143	7,400	(4)	(3)	(8)	2																	$ 1
Ending Balance (member's equity) at Mar. 31, 2021												13,466	13,473	(7)										9,470	7,674	7,677	(3)						4,896
Ending Balance, in shares at Mar. 31, 2021																																							769,000,000
Ending Balance (parent) at Mar. 31, 2021																												$ 4,026	762	2,776	488			$ 3,243	1,635	1,608
Beginning Balance at Dec. 31, 2021		$ 51,136		1,962	49,296	44,371	3,265	(232)	(2)	(69)	1,840				$ 17,148	17,145	9,149	8,007	(2)	(2)	(7)	3																	$ 1
Beginning Balance, in shares at Dec. 31, 2021		769,000,000													100													90,000,000						100,000,000					769,000,000
Beginning Balance (member's equity) at Dec. 31, 2021												13,891	13,897	(6)									9,551	9,551	8,295	8,298	(3)					5,015	5,015
Beginning Balance (parent) at Dec. 31, 2021		$ 49,296													$ 17,145													$ 4,464	762	3,100	602			$ 3,349	1,635	1,714
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)		781			818		818				(37)
Net income (loss)		857										340	340										215	215	171	171		77			77	(79)	(79)	$ 214		214
Net income		820													354	354		354
Other comprehensive income (loss)		107	[1]		99			110	(13)	2	8				(1)	(1)			1	(2)					(1)		(1)
Common stock issuances, including dividend reinvestment and employee benefits																																					$ (7)	$ (7)	$ 1	$ (7)
Common stock dividends		(760)			(760)		(760)					(50)	(50)		(250)	(250)		(250)						(250)									(113)
Equitization of certain notes payable to affiliates															2,431	2,431		2,431
Contributions from noncontrolling interests, net of transaction costs	[2]	23									23
Distributions to noncontrolling interest in subsidiaries		(28)									(28)				(1)							(1)
Other												1	1		1	1		1						1				$ 1			1		1
Ending Balance at Mar. 31, 2022		$ 51,252		$ 1,962	$ 49,446	$ 44,364	$ 3,323	$ (122)	$ (15)	$ (67)	$ 1,806				$ 19,682	$ 19,680	$ 9,149	$ 10,543	$ (1)	$ (4)	$ (7)	$ 2																	$ 1
Ending Balance (member's equity) at Mar. 31, 2022												$ 14,182	$ 14,188	$ (6)									$ 9,517	$ 9,517	$ 8,465	$ 8,469	$ (4)					$ 4,824	$ 4,824
Ending Balance, in shares at Mar. 31, 2022		770,000,000													100													90,000,000						100,000,000					770,000,000
Ending Balance (parent) at Mar. 31, 2022		$ 49,446													$ 19,680													$ 4,542	$ 762	$ 3,100	$ 680			$ 3,563	$ 1,635	$ 1,928

[1] Net of income tax impacts of approximately $32 million and $8 million for the three months ended March 31, 2022, and 2021, respectively.

[2] Relates to tax equity financing activity in the Commercial Renewables segment.

XML

Organization and Basis of Presentation

3 Months Ended

Mar. 31, 2022

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Organization and Basis of Presentation

Index to Combined Notes to Condensed Consolidated Financial Statements

The unaudited notes to the Condensed Consolidated Financial Statements that follow are a combined presentation. The following list indicates the registrants to which the footnotes apply.

Applicable Notes

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Duke Energy

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Duke Energy Carolinas

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Progress Energy

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Duke Energy Progress

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Duke Energy Florida

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Duke Energy Ohio

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Duke Energy Indiana

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Piedmont

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Tables within the notes may not sum across due to (i) Progress Energy's consolidation of Duke Energy Progress, Duke Energy Florida and other subsidiaries that are not registrants and (ii) subsidiaries that are not registrants but included in the consolidated Duke Energy balances.

ORGANIZATION AND BASIS OF PRESENTATION

BASIS OF PRESENTATION

These Condensed Consolidated Financial Statements have been prepared in accordance with GAAP for interim financial information and with the instructions to Form 10-Q and Regulation S-X. Accordingly, these Condensed Consolidated Financial Statements do not include all information and notes required by GAAP for annual financial statements and should be read in conjunction with the Consolidated Financial Statements in the Duke Energy Registrants’ combined Annual Report on Form 10-K for the year ended December 31, 2021.

The information in these combined notes relates to each of the Duke Energy Registrants as noted in the Index to Combined Notes to Condensed Consolidated Financial Statements. However, none of the registrants make any representations as to information related solely to Duke Energy or the subsidiaries of Duke Energy other than itself.

These Condensed Consolidated Financial Statements, in the opinion of the respective companies’ management, reflect all normal recurring adjustments necessary to fairly present the financial position and results of operations of each of the Duke Energy Registrants. Amounts reported in Duke Energy’s interim Condensed Consolidated Statements of Operations and each of the Subsidiary Registrants’ interim Condensed Consolidated Statements of Operations and Comprehensive Income are not necessarily indicative of amounts expected for the respective annual periods due to effects of seasonal temperature variations on energy consumption, regulatory rulings, timing of maintenance on electric generating units, changes in mark-to-market valuations, changing commodity prices and other factors.

In preparing financial statements that conform to GAAP, management must make estimates and assumptions that affect the reported amounts of assets and liabilities, the reported amounts of revenues and expenses and the disclosure of contingent assets and liabilities at the date of the financial statements. Actual results could differ from those estimates.

BASIS OF CONSOLIDATION

These Condensed Consolidated Financial Statements include, after eliminating intercompany transactions and balances, the accounts of the Duke Energy Registrants and subsidiaries or VIEs where the respective Duke Energy Registrants have control. See Note 11 for additional information on VIEs. These Condensed Consolidated Financial Statements also reflect the Duke Energy Registrants’ proportionate share of certain jointly owned generation and transmission facilities.

NONCONTROLLING INTEREST

Duke Energy maintains a controlling financial interest in certain less than wholly owned nonregulated subsidiaries. As a result, Duke Energy consolidates these subsidiaries and presents the third-party investors' portion of Duke Energy's net income (loss), net assets and comprehensive income (loss) as noncontrolling interest. Noncontrolling interest is included as a component of equity on the Condensed Consolidated Balance Sheets.

Several operating agreements of Duke Energy's subsidiaries with noncontrolling interest are subject to allocations of earnings, tax attributes and cash flows in accordance with contractual agreements that vary throughout the lives of the subsidiaries. Therefore, Duke Energy and the other investors' (the owners) interests in the subsidiaries are not fixed, and the subsidiaries apply the Hypothetical Liquidation at Book Value (HLBV) method in allocating income or loss and other comprehensive income or loss (all measured on a pretax basis) to the owners. The HLBV method measures the amounts that each owner would hypothetically claim at each balance sheet reporting date, including tax benefits realized by the owners over the IRS recapture period, upon a hypothetical liquidation of the subsidiary at the net book value of its underlying assets. The change in the amount that each owner would hypothetically receive at the reporting date compared to the amount it would have received on the previous reporting date represents the amount of income or loss allocated to each owner for the reporting period.

During September 2021, Duke Energy completed the initial minority interest investment in a portion of Duke Energy Indiana to an affiliate of GIC. GIC's ownership interest in Duke Energy Indiana represents a noncontrolling interest. See Note 2 for additional information on the sale.

Other operating agreements of Duke Energy's subsidiaries with noncontrolling interest allocate profit and loss based on their pro rata shares of the ownership interest in the respective subsidiary. Therefore, Duke Energy allocates net income or loss and other comprehensive income or loss of these subsidiaries to the owners based on their pro rata shares.

The following table presents allocated losses to noncontrolling interest for the three months ended March 31, 2022, and 2021.

	Three Months Ended March 31,
(in millions)	2022		2021
Noncontrolling Interest Allocation of Income
Allocated losses to noncontrolling tax equity members utilizing the HLBV method	$	24	$	43
Allocated losses to noncontrolling members based on pro rata shares of ownership	13		8
Total Noncontrolling Interest Allocated Losses	$	37	$	51

CASH, CASH EQUIVALENTS AND RESTRICTED CASH

Duke Energy, Duke Energy Carolinas, Progress Energy, Duke Energy Progress and Duke Energy Florida have restricted cash balances related primarily to collateral assets, escrow deposits and VIEs. See Notes 9 and 11 for additional information. Restricted cash amounts are included in Other within Current Assets and Other Noncurrent Assets on the Condensed Consolidated Balance Sheets. The following table presents the components of cash, cash equivalents and restricted cash included in the Condensed Consolidated Balance Sheets.

	March 31, 2022										December 31, 2021
			Duke				Duke		Duke				Duke				Duke		Duke
	Duke		Energy		Progress		Energy		Energy		Duke		Energy		Progress		Energy		Energy
	Energy		Carolinas		Energy		Progress		Florida		Energy		Carolinas		Energy		Progress		Florida
Current Assets
Cash and cash equivalents	$	853	$	4	$	63	$	42	$	13	$	343	$	7	$	70	$	35	$	23
Other	151		4		28		13		13		170		—		39		—		39
Other Noncurrent Assets
Other	16		1		4		4		—		7		1		4		4		—
Total cash, cash equivalents and restricted cash	$	1,020	$	9	$	95	$	59	$	26	$	520	$	8	$	113	$	39	$	62

INVENTORY

Provisions for inventory write-offs were not material at March 31, 2022, and December 31, 2021. The components of inventory are presented in the tables below.

	March 31, 2022
			Duke				Duke		Duke		Duke		Duke
	Duke		Energy		Progress		Energy		Energy		Energy		Energy
(in millions)	Energy		Carolinas		Energy		Progress		Florida		Ohio		Indiana		Piedmont
Materials and supplies	$	2,455	$	810	$	1,089	$	744	$	345	$	89	$	320	$	14
Coal	469		196		149		93		56		16		108		—
Natural gas, oil and other fuel	247		34		165		103		62		9		2		37
Total inventory	$	3,171	$	1,040	$	1,403	$	940	$	463	$	114	$	430	$	51

	December 31, 2021
			Duke				Duke		Duke		Duke		Duke
	Duke		Energy		Progress		Energy		Energy		Energy		Energy
(in millions)	Energy		Carolinas		Energy		Progress		Florida		Ohio		Indiana		Piedmont
Materials and supplies	$	2,397	$	793	$	1,067	$	729	$	338	$	80	$	311	$	14
Coal	486		195		167		94		73		19		105		—
Natural gas, oil and other fuel	316		38		164		98		66		17		2		95
Total inventory	$	3,199	$	1,026	$	1,398	$	921	$	477	$	116	$	418	$	109

NEW ACCOUNTING STANDARDS

No new accounting standards were adopted by the Duke Energy Registrants in 2022.

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Business Segments

3 Months Ended

Mar. 31, 2022

Segment Reporting [Abstract]

Business Segments

BUSINESS SEGMENTS

Duke Energy

Duke Energy's segment structure includes the following segments: Electric Utilities and Infrastructure, Gas Utilities and Infrastructure and Commercial Renewables.

The Electric Utilities and Infrastructure segment primarily includes Duke Energy's regulated electric utilities in the Carolinas, Florida and the Midwest. On January 28, 2021, Duke Energy executed an agreement providing for an investment by an affiliate of GIC in Duke Energy Indiana in exchange for a 19.9% minority interest issued by Duke Energy Indiana Holdco, LLC, the holding company for Duke Energy Indiana. The transaction will be completed following two closings for an aggregate purchase price of approximately $2 billion. The first closing, which occurred on September 8, 2021, resulted in Duke Energy Indiana Holdco, LLC issuing 11.05% of its membership interests in exchange for approximately $1,025 million or 50% of the purchase price. Duke Energy retained indirect control of these assets, and, therefore, no gain or loss was recognized on the Condensed Consolidated Statements of Operations. Duke Energy has the discretion to determine the timing of the second closing, but it will occur no later than January 2023. At the second closing, Duke Energy will issue and sell additional membership interests such that GIC will own 19.9% of the membership interests for the remaining 50% of the purchase price.

The Gas Utilities and Infrastructure segment includes Piedmont, Duke Energy's natural gas local distribution companies in Ohio and Kentucky and Duke Energy's natural gas storage, midstream pipeline and renewable natural gas investments.

The Commercial Renewables segment is primarily comprised of nonregulated utility-scale wind and solar generation assets located throughout the U.S. Duke Energy continues to monitor recoverability of its renewable merchant plants located in the ERCOT West market and in the PJM West market due to fluctuating market pricing and long-term forecasted energy prices. The assets were not impaired as of March 31, 2022, because the carrying value of approximately $200 million continues to approximate the aggregate estimated future undiscounted cash flows. Duke Energy has a 51% ownership interest in these assets. A continued decline in energy market pricing or other factors unfavorably impacting the economics would likely result in a future impairment.

The remainder of Duke Energy’s operations is presented as Other, which is primarily comprised of interest expense on holding company debt, unallocated corporate costs, Duke Energy’s wholly owned captive insurance company, Bison, and Duke Energy's ownership interest in National Methanol Company.

Business segment information is presented in the following tables. Segment assets presented exclude intercompany assets.

	Three Months Ended March 31, 2022
	Electric		Gas				Total
	Utilities and		Utilities and		Commercial		Reportable
(in millions)	Infrastructure		Infrastructure		Renewables		Segments		Other		Eliminations		Total
Unaffiliated revenues	$	5,995	$	1,009	$	121	$	7,125	$	7	$	—	$	7,132
Intersegment revenues	7		23		—		30		23		(53)		—
Total revenues	$	6,002	$	1,032	$	121	$	7,155	$	30	$	(53)	$	7,132
Segment income (loss)(a)	$	723	$	254	$	11	$	988	$	(170)	$	—	$	818
Less: Noncontrolling interests													37
Add: Preferred stock dividend													39
Net Income													$	820
Segment assets	$	144,790	$	15,170	$	7,021	$	166,981	$	4,251	$	(12)	$	171,220

	Three Months Ended March 31, 2021
	Electric		Gas				Total
	Utilities and		Utilities and		Commercial		Reportable
(in millions)	Infrastructure		Infrastructure		Renewables		Segments		Other		Eliminations		Total
Unaffiliated revenues	$	5,273	$	752	$	119	$	6,144	$	6	$	—	$	6,150
Intersegment revenues	8		23		—		31		20		(51)		—
Total revenues	$	5,281	$	775	$	119	$	6,175	$	26	$	(51)	$	6,150
Segment income (loss)(b)	$	820	$	245	$	27	$	1,092	$	(139)	$	—	$	953
Less: Noncontrolling interests													51
Add: Preferred stock dividend													39
Net Income													$	941

(a)Electric Utilities and Infrastructure includes $211 million recorded within Impairment of assets and other charges, $46 million within Operating revenues and $22 million within Noncontrolling Interests related to the Duke Energy Supreme Court ruling on the Condensed Consolidated Statements of Operations. See Note 3 for additional information.

(b)Commercial Renewables includes a $35 million loss related to Texas Storm Uri, of which $8 million is recorded within Nonregulated electric and other revenues, $2 million within Operation, maintenance and other, $29 million within Equity in earnings (losses) of unconsolidated affiliates and $12 million within Net Loss Attributable to Noncontrolling Interests on the Condensed Consolidated Statements of Operations. See Note 4 for additional information. Gas Utilities and Infrastructure includes $6 million, recorded within Equity in earnings (losses) of unconsolidated affiliates on the Condensed Consolidated Statements of Operations, related to gas pipeline investments.

Duke Energy Ohio

Duke Energy Ohio has two reportable segments, Electric Utilities and Infrastructure and Gas Utilities and Infrastructure. The remainder of Duke Energy Ohio's operations is presented as Other.

	Three Months Ended March 31, 2022
	Electric		Gas		Total
	Utilities and		Utilities and		Reportable
(in millions)	Infrastructure		Infrastructure		Segments		Other		Eliminations		Total
Total revenues	$	412	$	226	$	638	$	—	$	—	$	638
Segment income/Net (loss) income	$	41	$	38	$	79	$	(2)	$	—	$	77
Segment assets	$	7,101	$	3,784	$	10,885	$	14	$	(168)	$	10,731

	Three Months Ended March 31, 2021
	Electric		Gas		Total
	Utilities and		Utilities and		Reportable
(in millions)	Infrastructure		Infrastructure		Segments		Other		Total
Total revenues	$	363	$	169	$	532	$	—	$	532
Segment income/Net (loss) income	$	50	$	43	$	93	$	(2)	$	91

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Regulatory Matters

3 Months Ended

Mar. 31, 2022

Regulated Operations [Abstract]

Regulatory Matters

REGULATORY MATTERS

RATE-RELATED INFORMATION

The NCUC, PSCSC, FPSC, IURC, PUCO, TPUC and KPSC approve rates for retail electric and natural gas services within their states. The FERC approves rates for electric sales to wholesale customers served under cost-based rates (excluding Ohio and Indiana), as well as sales of transmission service. The FERC also regulates certification and siting of new interstate natural gas pipeline projects.

Duke Energy Carolinas and Duke Energy Progress

HB 951

The NCUC is required by North Carolina House Bill 951 (HB 951) to adopt an initial Carbon Plan on or before December 31, 2022. The NCUC has directed Duke Energy Carolinas and Duke Energy Progress to file a proposed Carbon Plan on or before May 16, 2022. Duke Energy Carolinas and Duke Energy Progress cannot predict the outcome of this matter.

On February 10, 2022, the NCUC adopted rules to govern the application and review process for the PBR authorized under HB 951. On April 5, 2022, the NCUC adopted rules to govern the securitization of 50% of the North Carolina retail portion of the remaining net book value of retiring coal plants pursuant to HB 951. The rules are constructive and consistent with the policy objectives of HB 951.

Duke Energy Carolinas

Oconee Nuclear Station Subsequent License Renewal

On June 7, 2021, Duke Energy Carolinas filed a subsequent license renewal (SLR) application for the Oconee Nuclear Station (ONS) with the U.S. Nuclear Regulatory Commission (NRC) to renew ONS’s operating license for an additional 20 years. The SLR would extend operations of the facility from 60 to 80 years. The current licenses for units 1 and 2 expire in 2033 and the license for unit 3 expires in 2034. By a Federal Register Notice dated July 28, 2021, the NRC provided a 60-day comment period for persons whose interest may be affected by the issuance of a subsequent renewed license for ONS to file a request for a hearing and a petition for leave to intervene. On September 27, 2021, Beyond Nuclear and Sierra Club (Petitioners) filed a Hearing Request and Petition to Intervene (Hearing Request) and a Petition for Waiver. The Hearing Request proposed three contentions purporting to challenge Duke Energy Carolinas’ environmental report (ER). In general, the proposed contentions claimed that the ER did not consider certain information regarding the environmental aspects of severe accidents caused by a hypothetical failure of the Jocassee Dam, and therefore did not satisfy the National Environmental Policy Act (NEPA) of 1969, as amended, or the NRC’s NEPA-implementing regulations. Duke Energy Carolinas filed its answer to the proposed contentions on October 22, 2021, and the Petitioners filed their reply to Duke Energy Carolinas’ answer on November 5, 2021. On February 11, 2022, the Atomic Safety and Licensing Board (ASLB) issued its decision on the Hearing Request and found that the Petitioners failed to establish that the proposed contentions are litigable. The ASLB also denied the Petitioners' Petition for Waiver and terminated the proceeding.

On February 24, 2022, the NRC issued a decision in the Turkey Point SLR appeal and ruled that the NRC’s license renewal Generic Environmental Impact Statement (GEIS) does not apply to SLR because the GEIS does not address SLR. The decision overturned a 2020 NRC decision that found the GEIS applies to SLR. While Turkey Point is not owned or operated by a Duke Energy Registrant, the NRC’s order applies to all SLR applicants, including ONS. The NRC order also indicated no subsequent renewed licenses will be issued until the NRC staff has completed an adequate NEPA review for each application. On April 5, 2022, the NRC approved a 24-month rulemaking plan that will enable the NRC staff to complete an adequate NEPA review. Although an SLR applicant may wait until the rulemaking is completed, the NRC also noted that an applicant may submit a revised environmental report providing information on environmental impacts during the SLR period prior to the rulemaking being completed. Duke Energy Carolinas is evaluating the two options to determine which is preferable for ONS. Although the NRC’s decision will delay completion of the SLR proceeding, Duke Energy Carolinas does not believe it changes the probability that the ONS subsequent renewed licenses will ultimately be issued, though Duke Energy Carolinas cannot guaranty the outcome of the license application process.

Duke Energy Carolinas and Duke Energy Progress intend to seek renewal of operating licenses and 20-year license extensions for all of their nuclear stations. New depreciation rates were implemented for all of the nuclear facilities during the second quarter of 2021. Duke Energy Carolinas and Duke Energy Progress cannot predict the outcome of this matter.

Duke Energy Progress

FERC Return on Equity Complaint

On October 16, 2020, North Carolina Electric Membership Corporation (NCEMC) filed a complaint at the FERC against Duke Energy Progress pursuant to Section 206 of the Federal Power Act (FPA), alleging that the 11% stated return on equity (ROE) component in the demand formula rate in the Power Supply and Coordination Agreement between NCEMC and Duke Energy Progress is unjust and unreasonable. Under FPA Section 206, the earliest refund effective date that the FERC can establish is the date of the filing of the complaint. A series of responses and answers were filed at FERC. The complaint proceeding is currently held in abeyance until June 1, 2022, based on representations that the parties have reached an agreement in principle and need additional time to finalize the filing. Duke Energy Progress cannot predict the outcome of this matter.

Duke Energy Florida

2021 Settlement Agreement

On January 14, 2021, Duke Energy Florida filed a Settlement Agreement (the “2021 Settlement”) with the FPSC. The parties to the 2021 Settlement include Duke Energy Florida, the Office of Public Counsel (OPC), the Florida Industrial Power Users Group, White Springs Agricultural Chemicals, Inc. d/b/a PCS Phosphate and NUCOR Steel Florida, Inc. (collectively, the “Parties”).

Pursuant to the 2021 Settlement, the Parties agreed to a base rate stay-out provision that expires year-end 2024; however, Duke Energy Florida is allowed an increase to its base rates of an incremental $67 million in 2022, $49 million in 2023 and $79 million in 2024, subject to adjustment in the event of tax reform during the years 2021, 2022 and 2023. The Parties also agreed to an ROE band of 8.85% to 10.85% with a midpoint of 9.85% based on a capital structure of 53% equity and 47% debt. The ROE band can be increased by 25 basis points if the average 30-year U.S. Treasury rate increases 50 basis points or more over a six-month period in which case the midpoint ROE would rise from 9.85% to 10.10%. Duke Energy Florida will also be able to retain the retail portion of the DOE award of approximately $173 million for spent nuclear fuel, which is expected to be received in 2022, in order to mitigate customer rates over the term of the 2021 Settlement. In return, Duke Energy Florida will be able to recognize the $173 million into earnings from 2022 through 2024.

In addition to these terms, the 2021 Settlement contained provisions related to the accelerated depreciation of Crystal River Units 4-5, the approval of approximately $1 billion in future investments in new cost-effective solar power, the implementation of a new Electric Vehicle Charging Station Program and the deferral and recovery of costs in connection with the implementation of Duke Energy Florida’s Vision Florida program, which explores various emerging non-carbon emitting generation technology, distributed technologies and resiliency projects, among other things. The 2021 Settlement also resolved remaining unrecovered storm costs for Hurricane Michael and Hurricane Dorian.

The FPSC approved the 2021 Settlement on May 4, 2021, issuing an order on June 4, 2021. Revised customer rates became effective January 1, 2022, with subsequent base rate increases effective January 1, 2023, and January 1, 2024.

Clean Energy Connection

On July 1, 2020, Duke Energy Florida petitioned the FPSC for approval of a voluntary solar program. The program consists of 10 new solar generating facilities with combined capacity of approximately 750 MW. The program allows participants to support cost-effective solar development in Florida by paying a subscription fee based on per kilowatt-subscriptions and receiving a credit on their bill based on the actual generation associated with their portion of the solar portfolio. The estimated cost of the 10 new solar generation facilities is approximately $1 billion over the next three years, and this investment will be included in base rates offset by the revenue from the subscription fees. The credits will be included for recovery in the fuel cost recovery clause. The FPSC approved the program in January 2021.

On February 24, 2021, the League of United Latin American Citizens (LULAC) filed a notice of appeal of the FPSC’s order approving the Clean Energy Connection to the Supreme Court of Florida. LULAC's initial brief was filed on May 26, 2021, and Appellees' response briefs were filed on July 26, 2021. LULAC's reply brief was filed on September 24, 2021, and its request for oral argument was filed on September 28, 2021. The Supreme Court of Florida heard the oral argument on February 9, 2022. The FPSC approval order remains in effect pending the outcome of the appeal. Duke Energy Florida cannot predict the outcome of this matter.

Storm Protection Plan

On April 11, 2022, Duke Energy Florida filed a Storm Protection Plan for approval with the FPSC. The plan, which covers investments for the 2023-2032 time frame, reflects approximately $7 billion of capital investment in transmission and distribution meant to strengthen its infrastructure, reduce outage times associated with extreme weather events, reduce restoration costs and improve overall service reliability. The FPSC has scheduled a hearing to begin on August 2, 2022. Duke Energy Florida cannot predict the outcome of this matter.

Duke Energy Ohio

Duke Energy Ohio Electric Base Rate Case

Duke Energy Ohio filed with the PUCO an electric distribution base rate case application on October 1, 2021, with supporting testimony filed on October 15, 2021, requesting an increase in electric distribution base rates of approximately $55 million and an ROE of 10.3%. This is an approximate 3.3% average increase in the customer's total bill across all customer classes. The drivers for this case are capital invested since Duke Energy Ohio's last electric distribution base rate case in 2017. Duke Energy Ohio is also seeking to adjust the caps on its Distribution Capital Investment Rider (DCI Rider). Duke Energy Ohio anticipates the PUCO will rule on the request in 2022. Duke Energy Ohio cannot predict the outcome of this matter.

Energy Efficiency Cost Recovery

In response to changes in Ohio law that eliminated Ohio's energy efficiency mandates, the PUCO issued an order on February 26, 2020, directing utilities to wind down their demand-side management programs by September 30, 2020, and to terminate the programs by December 31, 2020. Duke Energy Ohio took the following actions:

•On March 27, 2020, Duke Energy Ohio filed an application for rehearing seeking clarification on the final true up and reconciliation process after 2020. On November 18, 2020, the PUCO issued an order replacing the cost cap previously imposed upon Duke Energy Ohio with a cap on shared savings recovery. On December 18, 2020, Duke Energy Ohio filed an additional application for rehearing challenging, among other things, the imposition of the cap on shared savings. On January 13, 2021, the application for rehearing was granted for further consideration.

•On October 9, 2020, Duke Energy Ohio filed an application to implement a voluntary energy efficiency program portfolio to commence on January 1, 2021. The application proposed a mechanism for recovery of program costs and a benefit associated with avoided transmission and distribution costs. The application remains under review.

•On November 18, 2020, the PUCO issued an order directing all utilities to set their energy efficiency riders to zero effective January 1, 2021, and to file a separate application for final reconciliation of all energy efficiency costs prior to December 31, 2020. Effective January 1, 2021, Duke Energy Ohio suspended its energy efficiency programs.

•On June 14, 2021, the PUCO issued an entry for each utility to file by July 15, 2021, a proposal to reestablish low-income programs through December 31, 2021. Duke Energy Ohio filed its application on July 14, 2021.

•On February 23, 2022, the PUCO issued its Fifth Entry on Rehearing that 1) affirmed its reduction in Duke Energy Ohio's shared savings cap; 2) denied rehearing/clarification regarding lost distribution revenues and shared savings recovery for periods after December 31, 2020; and 3) directed Duke Energy Ohio to submit an updated application with exhibits.

•On March 25, 2022, Duke Energy Ohio filed its Amended Application consistent with the PUCO's order.

Duke Energy Ohio cannot predict the outcome of this matter.

Natural Gas Pipeline Extension

Duke Energy Ohio installed a new natural gas pipeline (the Central Corridor Project) in its Ohio service territory to increase system reliability and enable the retirement of older infrastructure. Construction of the pipeline extension was completed and placed in service on March 14, 2022. Duke Energy Ohio expects the final cost for the pipeline development and construction activities to be approximately $185 million (excluding overheads and AFUDC).

MGP Cost Recovery

In an order issued in 2013, the PUCO approved Duke Energy Ohio's deferral and recovery of costs related to environmental remediation at two sites (East End and West End) that housed former MGP operations. Duke Energy Ohio made annual applications with the PUCO to recover its incremental remediation costs consistent with the PUCO’s directive in Duke Energy Ohio’s 2012 natural gas base rate case. The Staff of the PUCO (Staff) issued reports recommending a disallowance of MGP remediation costs incurred that the Staff believes are not eligible for recovery. The Staff interprets the PUCO’s 2013 order granting Duke Energy Ohio recovery of MGP remediation as limiting the recovery to work directly on the East End and West End sites. Duke Energy Ohio filed reply comments objecting to the Staff’s recommendations and explaining, among other things, the obligation Duke Energy Ohio has under Ohio law to remediate all areas impacted by the former MGPs and not just physical property that housed the former plants and equipment. Additionally, the Staff recommended that any discussion pertaining to Duke Energy Ohio's recovery of ongoing MGP costs should be directly tied to or netted against insurance proceeds collected by Duke Energy Ohio. An evidentiary hearing concluded on November 21, 2019. Initial briefs were filed on January 17, 2020, and reply briefs were filed on February 14, 2020.

The 2013 PUCO order also contained conditional deadlines for completing the MGP environmental remediation and the deferral of related remediation costs. Subsequent to the order, the deadline was extended to December 31, 2019. On May 10, 2019, Duke Energy Ohio filed an application requesting a continuation of its existing deferral authority for MGP remediation that must occur after December 31, 2019. On July 12, 2019, the Staff recommended the commission deny the deferral authority request. On September 13, 2019, intervenor comments were filed opposing Duke Energy Ohio's request for continuation of existing deferral authority and on October 2, 2019, Duke Energy Ohio filed reply comments.

A Stipulation and Recommendation was filed jointly by Duke Energy Ohio, the Staff, the Office of the Ohio Consumers' Counsel and the Ohio Energy Group on August 31, 2021, which was approved without modification by the PUCO on April 20, 2022. The Stipulation and Recommendation resolved all open issues regarding MGP remediation costs incurred between 2013 and 2019, Duke Energy Ohio’s request for additional deferral authority beyond 2019 and the pending issues related to the Tax Act described below as it related to Duke Energy Ohio’s natural gas operations. As a result of the approval of the Stipulation and Recommendation, Duke Energy Ohio recognized pretax charges of approximately $15 million to Operating revenues, regulated natural gas and $58 million to Operation, maintenance and other and a tax benefit of $72 million to Income Tax (Benefit) Expense in the Condensed Consolidated Statements of Operations for the three months ended March 31, 2022. The Stipulation and Recommendation further acknowledged Duke Energy Ohio’s ability to file a request for additional deferral authority in the future related to environmental remediation of any MGP impacts in the Ohio River if necessary, subject to specific conditions. Intervenors have 30 days to file for rehearing. Duke Energy Ohio cannot predict the outcome of this matter.

Tax Act – Ohio

On December 21, 2018, Duke Energy Ohio filed an application to change its base rate tariffs and establish a new rider to implement the benefits of the Tax Act for natural gas customers. Duke Energy Ohio requested commission approval to implement the tariff changes and rider effective April 1, 2019. The new rider would flow through to customers the benefit of the reduction in the statutory federal tax rate from 35% to 21% since January 1, 2018, all future benefits of the lower tax rates and a full refund of deferred income taxes collected at the higher tax rates in prior years. Deferred income taxes subject to normalization rules would be refunded consistent with federal law and deferred income taxes not subject to normalization rules will be refunded over a 10-year period. The PUCO established a procedural schedule and testimony was filed on July 31, 2019. An evidentiary hearing occurred on August 7, 2019. The Stipulation and Recommendation filed on August 31, 2021, and approved on April 20, 2022, disclosed in the MGP Cost Recovery matter above, resolves the outstanding issues in this proceeding by providing customers a one-time bill credit for the reduction in the statutory federal tax rate from 35% to 21% since January 1, 2018, through June 1, 2022, and reducing base rates going forward. Deferred income taxes subject to normalization rules will be refunded consistent with federal law through a new rider. Deferred income taxes not subject to normalization rules were written off. Intervenors have 30 days to file for rehearing. Duke Energy Ohio cannot predict the outcome of this matter.

Midwest Propane Caverns

Duke Energy Ohio used propane stored in caverns to meet peak demand during winter. Because the Central Corridor Project is complete and placed in service, the propane peaking facilities will no longer be necessary and have been retired. On October 7, 2021, Duke Energy Ohio requested deferral treatment of the property, plant and equipment as well as costs related to propane inventory and decommissioning costs. On January 6, 2022, the Staff issued a report recommending deferral authority for costs related to propane inventory and decommissioning costs, but not for the net book value of the remaining plant assets. As a result of the Staff's report, Duke Energy Ohio recorded a $19 million charge to Impairment of assets and other charges on the Consolidated Statements of Operations and Comprehensive Income in the fourth quarter of 2021. A Stipulation and Recommendation was filed jointly by Duke Energy Ohio and the Staff on April 27, 2022, recommending, among other things, approval of deferral treatment of a portion of the net book value of the property, plant and equipment prior to the 2021 impairment at the time of the next natural gas base rate case, excluding operations and maintenance savings, decommissioning costs not to exceed $7 million and costs related to propane inventory. The Stipulation and Recommendation states that Duke Energy Ohio will seek recovery of the deferral through its next gas base rate case proceeding with a proposed amortization period of at least ten years and include an independent engineering study analyzing the necessity and prudency of the incremental investments made at the facilities since March 31, 2012. Duke Energy Ohio will not seek a return on the deferred amounts. Duke Energy Ohio cannot predict the outcome of this matter.

Duke Energy Indiana

2019 Indiana Rate Case

On July 2, 2019, Duke Energy Indiana filed a general rate case with the IURC for a rate increase for retail customers of approximately $395 million. The rebuttal case, filed on December 4, 2019, updated the requested revenue requirement to result in a 15.6% or $396 million average retail rate increase, including the impacts of the Utility Receipts Tax. Hearings concluded on February 7, 2020. On June 29, 2020, the IURC issued an order in the rate case approving a revenue increase of $146 million before certain adjustments and ratemaking refinements. The order approved Duke Energy Indiana’s requested forecasted rate base of $10.2 billion as of December 31, 2020, including the Edwardsport Integrated Gasification Combined Cycle (IGCC) Plant. The IURC reduced Duke Energy Indiana’s request by slightly more than $200 million, when accounting for the utility receipts tax and other adjustments. Approximately 50% of the reduction was due to a prospective change in depreciation and use of regulatory asset for the end-of-life inventory at retired generating plants, approximately 20% is due to the approved ROE of 9.7% versus the requested ROE of 10.4% and approximately 20% was related to miscellaneous earnings neutral adjustments. Step one rates were estimated to be approximately 75% of the total and became effective on July 30, 2020. Step two rates are estimated to be the remaining 25% of the total rate increase. Step two rates were approved on July 28, 2021, and implemented in August 2021. Step two rates are based on an ROE of 9.7% and actual December 31, 2020 capital structure with a 54% equity component. Step two rates were reconciled to January 1, 2021.

Several groups appealed the IURC order to the Indiana Court of Appeals. Appellate briefs were filed on October 14, 2020, focusing on three issues: wholesale sales allocations, coal ash basin cost recovery and the Edwardsport IGCC operating and maintenance expense level approved. The appeal was fully briefed in January 2021 and an oral argument was held on April 8, 2021. The Indiana Court of Appeals affirmed the IURC decision on May 13, 2021. The Indiana Office of Utility Consumer Counselor (OUCC) and the Duke Industrial Group filed a joint petition to transfer the rate case appeal to the Indiana Supreme Court on June 28, 2021. Response briefs were filed July 19, 2021. The Indiana Supreme Court issued its opinion on March 10, 2022, finding that the IURC erred in allowing Duke Energy Indiana to recover coal ash costs incurred before the IURC’s rate case order in June 2020. The Indiana Supreme Court found that allowing Duke Energy Indiana to recover coal ash costs incurred between rate cases that exceeded the amount built into base rates violated the prohibition against retroactive ratemaking. The IURC’s order has been remanded to the IURC for additional proceedings consistent with the Indiana Supreme Court’s opinion. As a result of the court's opinion, Duke Energy Indiana recognized pretax charges of approximately $211 million to Impairment of assets and other charges and $46 million to Operating revenues in the Condensed Consolidated Statements of Operations for the three months ended March 31, 2022. Duke Energy Indiana filed a request for rehearing with the Supreme Court on April 11, 2022. Until the Indiana Supreme Court acts on the petition for rehearing, the IURC may not act on the Supreme Court's initial remedy. Duke Energy Indiana cannot predict the outcome of this matter.

2020 Indiana Coal Ash Recovery Case

In Duke Energy Indiana’s 2019 rate case, the IURC also opened a subdocket for post-2018 coal ash related expenditures. Duke Energy Indiana filed testimony on April 15, 2020, in the coal ash subdocket requesting recovery for the post-2018 coal ash basin closure costs for plans that have been approved by the Indiana Department of Environmental Management (IDEM) as well as continuing deferral, with carrying costs, on the balance. An evidentiary hearing was held on September 14, 2020. Briefing was completed by mid-September 2021. On November 3, 2021, the IURC issued an order allowing recovery for post-2018 coal ash basin closure costs for the plans that have been approved by IDEM, as well as continuing deferral, with carrying costs, on the balance. The OUCC filed a notice of appeal to the Indiana Court of Appeals on December 3, 2021. Duke Energy Indiana cannot predict the outcome of this matter.

Piedmont

2022 South Carolina Rate Case

On April 1, 2022, Piedmont filed an application with the PSCSC for a rate increase for retail customers of approximately $7 million, which represents an approximate 3.4% increase in retail revenues. The rate increase is driven by customer growth and infrastructure upgrade investments (plant additions) since Piedmont’s last proceeding in 2021 under South Carolina’s Rate Stabilization Act. In addition, Piedmont agreed with the South Carolina Office of Regulatory Staff in 2019 to file a general rate case no later than April 1, 2022, to conduct a more comprehensive review of rates including the allocation of costs to residential, commercial and industrial customers. The PSCSC has scheduled an evidentiary hearing for the week of August 15, 2022. Piedmont cannot predict the outcome of this matter.

OTHER REGULATORY MATTERS

Potential Coal Plant Retirements

The Subsidiary Registrants periodically file IRPs with their state regulatory commissions. The IRPs provide a view of forecasted energy needs over a long term (10 to 20 years) and options being considered to meet those needs. IRPs filed by the Subsidiary Registrants included planning assumptions to potentially retire certain coal-fired generating facilities in North Carolina and Indiana earlier than their current estimated useful lives. Duke Energy continues to evaluate the potential need to retire these coal-fired generating facilities earlier than the current estimated useful lives and plans to seek regulatory recovery for amounts that would not be otherwise recovered when any of these assets are retired.

The table below contains the net carrying value of generating facilities planned for retirement or included in recent IRPs as evaluated for potential retirement. Dollar amounts in the table below are included in Net property, plant and equipment on the Condensed Consolidated Balance Sheets as of March 31, 2022, and exclude capitalized asset retirement costs.

		Remaining Net
	Capacity	Book Value
	(in MW)	(in millions)
Duke Energy Carolinas
Allen Steam Station Units 1(a)	167	$	12
Allen Steam Station Units 5(b)	259	265
Cliffside Unit 5(b)	546	358
Duke Energy Progress
Mayo Unit 1(b)	713	621
Roxboro Units 3-4(b)	1,409	450
Duke Energy Florida
Crystal River Units 4-5(c)	1,442	1,636
Duke Energy Indiana
Gibson Units 1-5(d)	2,845	2,076
Cayuga Units 1-2(d)	1,005	676
Total Duke Energy	8,386	$	6,094

(a)As part of the 2015 resolution of a lawsuit involving alleged New Source Review violations, Duke Energy Carolinas must retire Allen Steam Station Unit 1 by December 31, 2024. The long-term energy options considered in the IRP could result in retirement of this unit earlier than its current estimated useful live.

(b)These units were included in the IRP filed by Duke Energy Carolinas and Duke Energy Progress in North Carolina and South Carolina on September 1, 2020. The long-term energy options considered in the IRP could result in retirement of these units earlier than their current estimated useful lives.

(c)On January 14, 2021, Duke Energy Florida filed the 2021 Settlement agreement with the FPSC, which proposed depreciation rates reflecting retirement dates for Duke Energy Florida's last two coal-fired generating facilities, Crystal River Units 4-5, eight years ahead of schedule in 2034 rather than in 2042. The FPSC approved the 2021 Settlement on May 4, 2021.

(d)The rate case filed July 2, 2019, included proposed depreciation rates reflecting retirement dates from 2026 to 2038. The depreciation rates reflecting these updated retirement dates were approved by the IURC as part of the rate case order issued on June 29, 2020.

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Commitments and Contingencies

3 Months Ended

Mar. 31, 2022

Commitments and Contingencies Disclosure [Abstract]

Commitments And Contingencies

COMMITMENTS AND CONTINGENCIES

ENVIRONMENTAL

The Duke Energy Registrants are subject to federal, state and local regulations regarding air and water quality, hazardous and solid waste disposal, coal ash and other environmental matters. These regulations can be changed from time to time, imposing new obligations on the Duke Energy Registrants. The following environmental matters impact all Duke Energy Registrants.

Remediation Activities

In addition to AROs recorded as a result of various environmental regulations, the Duke Energy Registrants are responsible for environmental remediation at various sites. These include certain properties that are part of ongoing operations and sites formerly owned or used by Duke Energy entities. These sites are in various stages of investigation, remediation and monitoring. Managed in conjunction with relevant federal, state and local agencies, remediation activities vary based upon site conditions and location, remediation requirements, complexity and sharing of responsibility. If remediation activities involve joint and several liability provisions, strict liability, or cost recovery or contribution actions, the Duke Energy Registrants could potentially be held responsible for environmental impacts caused by other potentially responsible parties and may also benefit from insurance policies or contractual indemnities that cover some or all cleanup costs. Liabilities are recorded when losses become probable and are reasonably estimable. The total costs that may be incurred cannot be estimated because the extent of environmental impact, allocation among potentially responsible parties, remediation alternatives and/or regulatory decisions have not yet been determined at all sites. Additional costs associated with remediation activities are likely to be incurred in the future and could be significant. Costs are typically expensed as Operation, maintenance and other on the Condensed Consolidated Statements of Operations unless regulatory recovery of the costs is deemed probable.

The following table contains information regarding reserves for probable and estimable costs related to the various environmental sites. These reserves are recorded in Other within Other Noncurrent Liabilities on the Condensed Consolidated Balance Sheets.

(in millions)	March 31, 2022		December 31, 2021
Reserves for Environmental Remediation
Duke Energy	$	87	$	88
Duke Energy Carolinas	19		19
Progress Energy	23		23
Duke Energy Progress	11		11
Duke Energy Florida	11		11
Duke Energy Ohio	33		34
Duke Energy Indiana	4		4
Piedmont	8		9

Additional losses in excess of recorded reserves that could be incurred for the stages of investigation, remediation and monitoring for environmental sites that have been evaluated at this time are not material.

LITIGATION

Duke Energy

Michael Johnson et al. v. Duke Energy Corporation et al.

On September 23, 2020, plaintiff Michael Johnson, a former Duke Energy employee and participant in the Duke Energy Retirement Savings Plan (Plan) brought suit on his own behalf and on behalf of other participants and beneficiaries similarly situated against Duke Energy Corporation, the Duke Energy Benefits Committee, and other unnamed individual defendants. The complaint, which was subsequently amended to add a current participant as a plaintiff on November 23, 2020, alleges that the defendants breached their fiduciary duties with respect to certain fees associated with the Plan in violation of the Employee Retirement Income Security Act of 1974 and seeks certification of a class of all individuals who were participants or beneficiaries of the Plan at any time on or after September 23, 2014. The defendants filed a motion to dismiss the plaintiffs’ amended complaint on December 18, 2020. On January 31, 2022, the court denied the defendants' motion to dismiss. On February 28, 2022, Duke Energy responded to the amended complaint. Discovery commenced and the parties exchanged preliminary disclosures. After review of these disclosures, the parties filed a joint stipulation of dismissal with prejudice on April 28, 2022. If approved by the Court, this matter will be fully resolved. Duke Energy cannot predict the outcome of this matter.

Texas Storm Uri Tort Litigation

Several Duke Energy renewables project companies, located in the ERCOT market, were named in lawsuits arising out of Texas Storm Uri in mid-February 2021. Duke Energy Corporation, which had originally been named in several suits, was dismissed from the lawsuits. The lawsuits against the Duke Energy renewables project companies seek recovery for property damages, personal injury and for wrongful death allegedly caused by the power outages, which the plaintiffs claim was the result of collective failures of generators, transmission and distribution operators, retail energy providers and others, including ERCOT. The cases have been consolidated into a Texas state court multidistrict litigation (MDL) proceeding for discovery and pre-litigation purposes. Five MDL cases have been designated for motions to dismiss while all other cases are stayed. Duke Energy renewables projects are named as defendants in three of these five cases. The parties' briefing on omnibus motions to dismiss should be completed by July 2022 and will focus on lack of duty, tariff defenses and sovereign immunity. Decisions on these motions will be applicable to all of the stayed cases. Duke Energy cannot predict the outcomes of these matters.

Duke Energy Carolinas

Ruben Villano, et al. v. Duke Energy Carolinas, LLC

On June 16, 2021, a group of nine individuals went over a low head dam adjacent to the Dan River Steam Station in Eden, North Carolina, while water tubing. Emergency personnel rescued four people and five others were confirmed deceased. On August 11, 2021, Duke Energy Carolinas was served with the complaint filed in Durham County Superior Court on behalf of four survivors, which was later amended to include all the decedents along with the survivors, except for one minor. The lawsuit alleges that Duke Energy Carolinas knew that the river was used for recreational purposes and that Duke Energy did not adequately warn about the dam, and that Duke Energy Carolinas created a dangerous and hidden hazard on the Dan River in building and maintaining the low head dam. On September 30, 2021, Duke Energy Carolinas filed its motion to dismiss and motion for transfer of venue from Durham County to Rockingham County, both of which were denied on November 15, 2021. On November 15, 2021, Duke Energy Carolinas was also served with Plaintiffs Second Amended Complaint, which added the final minor plaintiff and consolidated all the actions into one lawsuit. Duke Energy Carolinas has filed its Answer and Affirmative Defenses to the Second Amended Complaint. Mediation is scheduled for December 2022. Discovery has commenced and is scheduled to be completed on or before February 28, 2023. The case is scheduled to be trial-ready by April 24, 2023. Duke Energy Carolinas cannot predict the outcome of this matter.

NTE Carolinas II, LLC Litigation

In November 2017, Duke Energy Carolinas entered into a standard FERC large generator interconnection agreement (LGIA) with NTE Carolinas II, LLC (NTE), a company that proposed to build a combined-cycle natural gas plant in Rockingham County, North Carolina. On September 6, 2019, Duke Energy Carolinas filed a lawsuit in Mecklenburg County Superior Court against NTE for breach of contract, alleging that NTE's failure to pay benchmark payments for Duke Energy Carolinas' transmission system upgrades required under the interconnection agreement constituted a termination of the interconnection agreement. Duke Energy Carolinas is seeking a monetary judgment against NTE because NTE failed to make multiple milestone payments. The lawsuit was moved to federal court in North Carolina. NTE filed a motion to dismiss Duke Energy Carolinas’ complaint and brought counterclaims alleging anti-competitive conduct and violations of state and federal statutes. Duke Energy Carolinas filed a motion to dismiss NTE's counterclaims.

On May 21, 2020, in response to a NTE petition challenging Duke Energy Carolinas' termination of the LGIA, FERC issued a ruling that 1) it has exclusive jurisdiction to determine whether a transmission provider may terminate a LGIA; 2) FERC approval is required to terminate a conforming LGIA if objected to by the interconnection customer; and 3) Duke Energy may not announce the termination of a conforming LGIA unless FERC has approved the termination. FERC's Office of Enforcement also initiated an investigation of Duke Energy Carolinas into matters pertaining to the LGIA. Duke Energy Carolinas is cooperating with the Office of Enforcement but cannot predict the outcome of this investigation.

On August 17, 2020, the court denied both NTE’s and Duke Energy Carolinas’ motions to dismiss. In October 2021, NTE filed a Second Amended Counterclaim and Complaint, and in January 2022, NTE filed a Third Amended Counterclaim and Complaint. Duke Energy Carolinas has responded to these pleadings. On December 6, 2021, Duke Energy Carolinas filed an Amended Complaint. On March 1, 2022, the parties participated in mediation, which ended in an impasse. On April 4, 2022, Duke Energy Carolinas filed a motion for summary judgment seeking a ruling in its favor as to some of its affirmative claims against NTE and to all of NTE’s counterclaims. Duke Energy Carolinas' motion will be fully briefed on May 10, 2022. The case is scheduled to be trial-ready by August 1, 2022. Duke Energy Carolinas cannot predict the outcome of this matter.

Asbestos-related Injuries and Damages Claims

Duke Energy Carolinas has experienced numerous claims for indemnification and medical cost reimbursement related to asbestos exposure. These claims relate to damages for bodily injuries alleged to have arisen from exposure to or use of asbestos in connection with construction and maintenance activities conducted on its electric generation plants prior to 1985.

Duke Energy Carolinas has recognized asbestos-related reserves of $495 million at March 31, 2022, and $501 million at December 31, 2021. These reserves are classified in Other within Other Noncurrent Liabilities and Other within Current Liabilities on the Condensed Consolidated Balance Sheets. These reserves are based upon Duke Energy Carolinas' best estimate for current and future asbestos claims through 2041 and are recorded on an undiscounted basis. In light of the uncertainties inherent in a longer-term forecast, management does not believe they can reasonably estimate the indemnity and medical costs that might be incurred after 2041 related to such potential claims. It is possible Duke Energy Carolinas may incur asbestos liabilities in excess of the recorded reserves.

Duke Energy Carolinas has third-party insurance to cover certain losses related to asbestos-related injuries and damages above an aggregate self-insured retention. Receivables for insurance recoveries were $644 million at March 31, 2022, and $644 million at December 31, 2021. These amounts are classified in Other within Other Noncurrent Assets and Receivables within Current Assets on the Condensed Consolidated Balance Sheets. Any future payments up to the policy limit will be reimbursed by the third-party insurance carrier. Duke Energy Carolinas is not aware of any uncertainties regarding the legal sufficiency of insurance claims. Duke Energy Carolinas believes the insurance recovery asset is probable of recovery as the insurance carrier continues to have a strong financial strength rating.

The reserve for credit losses for insurance receivables is $12 million for Duke Energy and Duke Energy Carolinas as of March 31, 2022, and December 31, 2021. The insurance receivable is evaluated based on the risk of default and the historical losses, current conditions and expected conditions around collectability. Management evaluates the risk of default annually based on payment history, credit rating and changes in the risk of default from credit agencies.

Duke Energy Progress and Duke Energy Florida

Spent Nuclear Fuel Matters

On June 18, 2018, Duke Energy Progress and Duke Energy Florida sued the U.S. in the U.S. Court of Federal Claims for damages incurred for the period 2014 through 2018. The lawsuit claimed the DOE breached a contract in failing to accept spent nuclear fuel under the Nuclear Waste Policy Act of 1982 and asserted damages for the cost of on-site storage in the amount of $100 million and $200 million for Duke Energy Progress and Duke Energy Florida, respectively.

On March 30, 2022, the DOE and Duke Energy Progress executed a settlement agreement, pursuant to which Duke Energy Progress will receive damages for costs incurred between 2014 and 2018, and will be able to submit future costs on a defined schedule. In April 2022, Duke Energy Progress received $87 million in proceeds that related to damages incurred in 2014 through 2018.

On May 2, 2022, the DOE and Duke Energy Florida executed a settlement agreement, pursuant to which Duke Energy Florida will receive approximately $180 million for costs incurred between 2014 and 2018, and will be able to submit costs incurred in 2019 and 2020 pursuant to an audit process.

Duke Energy Indiana

Coal Ash Basin Closure Plan Appeal

On January 27, 2020, Hoosier Environmental Council (HEC) filed a Petition for Administrative Review with the Indiana Office of Environmental Adjudication challenging the Indiana Department of Environmental Management’s (IDEM's) December 10, 2019, partial approval of Duke Energy Indiana’s ash pond closure plan at Duke Energy's Gallagher power station. After hearing oral arguments in early April 2021 on Duke Energy Indiana's and HEC's competing Motions for Summary Judgment, on May 4, 2021, the administrative court rejected all of HEC’s claims and issued a ruling in favor of Duke Energy Indiana. On June 3, 2021, HEC filed an appeal in Superior Court to seek judicial review of the order. On June 25, 2021, Duke Energy Indiana filed its response to the Petition to Review. On August 30, 2021, HEC served Duke Energy Indiana with its Brief in Support of Petition for Judicial Review. On October 29, 2021, Duke Energy Indiana and IDEM filed their response briefs. On December 13, 2021, HEC filed and served its Reply Brief.

On January 11, 2022, Duke Energy Indiana received a compliance obligation letter from the EPA notifying the company that the two basins at issue in the litigation are subject to requirements of the CCR Rule. The letter does not provide a deadline for compliance. Duke Energy Indiana is evaluating the EPA letter, its potential impacts on the litigation and the extent to which this letter could apply to CCR surface impoundments at its other Indiana sites.

Following the January 11, 2022 EPA notice of compliance letter, the parties filed a joint motion to stay the litigation for 45 days, which was approved by the court. As a result, the oral argument scheduled for February 1, 2022, was postponed. Duke Energy Indiana and HEC engaged in settlement discussions, but the parties were unable to reach resolution. On April 21, 2022, HEC filed a Motion to Lift Stay and Motion for Judicial Notice. HEC also requested that the court hold a hearing within 45 days and also take judicial notice of the EPA's January 11, 2022 letter. On April 22, 2022, Duke Energy Indiana sent IDEM a letter withdrawing the closure plans for the Gallagher North Ash Pond and Primary Pond Ash Fill. After acknowledgment by IDEM of withdrawal of these closure plans, Duke Energy Indiana filed a Motion to Dismiss the litigation as moot on April 28, 2022, and IDEM filed a separate brief on May 2, 2022, in support of this motion. Briefing is ongoing. Duke Energy Indiana cannot predict the outcome of this matter.

Other Litigation and Legal Proceedings

The Duke Energy Registrants are involved in other legal, tax and regulatory proceedings arising in the ordinary course of business, some of which involve significant amounts. The Duke Energy Registrants believe the final disposition of these proceedings will not have a material effect on their results of operations, cash flows or financial position. Reserves are classified on the Condensed Consolidated Balance Sheets in Other within Other Noncurrent Liabilities and Other within Current Liabilities.

OTHER COMMITMENTS AND CONTINGENCIES

General

As part of their normal business, the Duke Energy Registrants are party to various financial guarantees, performance guarantees and other contractual commitments to extend guarantees of credit and other assistance to various subsidiaries, investees and other third parties. These guarantees involve elements of performance and credit risk, which are not fully recognized on the Condensed Consolidated Balance Sheets and have uncapped maximum potential payments. However, the Duke Energy Registrants do not believe these guarantees will have a material effect on their results of operations, cash flows or financial position.

In addition, the Duke Energy Registrants enter into various fixed-price, noncancelable commitments to purchase or sell power or natural gas, take-or-pay arrangements, transportation, or throughput agreements and other contracts that may or may not be recognized on their respective Condensed Consolidated Balance Sheets. Some of these arrangements may be recognized at fair value on their respective Condensed Consolidated Balance Sheets if such contracts meet the definition of a derivative and the NPNS exception does not apply. In most cases, the Duke Energy Registrants’ purchase obligation contracts contain provisions for price adjustments, minimum purchase levels and other financial commitments.

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Debt and Credit Facilities

3 Months Ended

Mar. 31, 2022

Debt Disclosure [Abstract]

Debt And Credit Facilities

DEBT AND CREDIT FACILITIES

SUMMARY OF SIGNIFICANT DEBT ISSUANCES

The following table summarizes significant debt issuances (in millions).

				Three Months Ended March 31, 2022
						Duke		Duke
	Maturity	Interest		Duke		Energy		Energy
Issuance Date	Date	Rate		Energy		Carolinas		Progress
First Mortgage Bonds
March 2022(a)	March 2032	2.850	%	$	500	$	500	$	—
March 2022(a)	March 2052	3.550	%	650		650		—
March 2022(a)	April 2032	3.400	%	500		—		500
March 2022(a)	April 2052	4.000	%	400		—		400
Total issuances				$	2,050	$	1,150	$	900

(a)Proceeds will be used to finance or refinance, in whole or in part, existing or new eligible projects under the sustainable financing framework.

CURRENT MATURITIES OF LONG-TERM DEBT

The following table shows the significant components of Current maturities of long-term debt on the Condensed Consolidated Balance Sheets. The Duke Energy Registrants currently anticipate satisfying these obligations with cash on hand and proceeds from additional borrowings.

(in millions)	Maturity Date	Interest Rate		March 31, 2022
Unsecured Debt
Progress Energy	April 2022	3.150	%	$	450
Duke Energy (Parent)	August 2022	3.050	%	500
Duke Energy (Parent)	August 2022	2.400	%	500
First Mortgage Bonds
Duke Energy Carolinas	May 2022	3.350	%	350
Duke Energy Progress	May 2022	2.800	%	500
Duke Energy Carolinas	March 2023	2.500	%	500
Duke Energy Carolinas	March 2023	3.050	%	500
Other(a)				584
Current maturities of long-term debt				$	3,884

(a)Includes finance lease obligations, amortizing debt, tax-exempt bonds with mandatory put options and small bullet maturities.

AVAILABLE CREDIT FACILITIES

Master Credit Facility

In March 2022, Duke Energy amended its existing Master Credit Facility to increase the amount of the facility from $8 billion to $9 billion and to extend the termination date to March 2027. The Duke Energy Registrants, excluding Progress Energy, have borrowing capacity under the Master Credit Facility up to a specified sublimit for each borrower. Duke Energy has the unilateral ability at any time to increase or decrease the borrowing sublimits of each borrower, subject to a maximum sublimit for each borrower. The amount available under the Master Credit Facility has been reduced to backstop issuances of commercial paper, certain letters of credit and variable-rate demand tax-exempt bonds that may be put to the Duke Energy Registrants at the option of the holder.

The table below includes the current borrowing sublimits and available capacity under these credit facilities.

	March 31, 2022
			Duke		Duke		Duke		Duke		Duke		Duke
	Duke		Energy		Energy		Energy		Energy		Energy		Energy
(in millions)	Energy		(Parent)		Carolinas		Progress		Florida		Ohio		Indiana		Piedmont
Facility size(a)	$	9,000	$	3,300	$	1,225	$	1,400	$	900	$	775	$	600	$	800
Reduction to backstop issuances
Commercial paper(b)	(2,819)		(1,715)		(300)		(150)		(236)		(86)		(150)		(182)
Outstanding letters of credit	(38)		(25)		(4)		(2)		(7)		—		—		—
Tax-exempt bonds	(81)		—		—		—		—		—		(81)		—
Available capacity under the Master Credit Facility	$	6,062	$	1,560	$	921	$	1,248	$	657	$	689	$	369	$	618

(a)Represents the sublimit of each borrower.

(b)Duke Energy issued $625 million of commercial paper and loaned the proceeds through the money pool to Duke Energy Carolinas, Duke Energy Progress, Duke Energy Ohio and Duke Energy Indiana. The balances are classified as Long-Term Debt Payable to Affiliated Companies on the Condensed Consolidated Balance Sheets.

Other Credit Facilities

Duke Energy (Parent) Term Loan Facility

On March 9, 2022, Duke Energy (Parent) entered into a Term Loan Credit Agreement (Credit Agreement) with commitments totaling $1.4 billion maturing March 9, 2024. The maturity date of the Credit Agreement may be extended for up to two years by request of Duke Energy (Parent), upon satisfaction of certain conditions contained in the Credit Agreement. Borrowings under the facility were used to repay amounts drawn under the Three-Year Revolving Credit Facility and for general corporate purposes, including repayment of a portion of Duke Energy's outstanding commercial paper. The balance is classified as Long-Term Debt on Duke Energy's Condensed Consolidated Balance Sheets. The Three-Year Revolving Credit Facility was terminated in March 2022.

Intercompany Credit Agreements

In March 2022, Progress Energy closed a revolving credit agreement with Duke Energy (Parent), which allowed up to $2.5 billion in intercompany borrowings.

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Goodwill

3 Months Ended

Mar. 31, 2022

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill

GOODWILL

Duke Energy

The following table presents the goodwill by reportable segment included on Duke Energy's Condensed Consolidated Balance Sheets at March 31, 2022, and December 31, 2021.

	Electric Utilities		Gas Utilities		Commercial
(in millions)	and Infrastructure		and Infrastructure		Renewables		Total
Goodwill balance	$	17,379	$	1,924	$	122	$	19,425
Accumulated impairment charges	—		—		(122)		(122)
Goodwill, adjusted for accumulated impairment charges	$	17,379	$	1,924	$	—	$	19,303

Duke Energy Ohio

Duke Energy Ohio's Goodwill balance of $920 million, allocated $596 million to Electric Utilities and Infrastructure and $324 million to Gas Utilities and Infrastructure, is presented net of accumulated impairment charges of $216 million on the Condensed Consolidated Balance Sheets at March 31, 2022, and December 31, 2021.

Progress Energy

Progress Energy's Goodwill is included in the Electric Utilities and Infrastructure segment and there are no accumulated impairment charges.

Piedmont

Piedmont's Goodwill is included in the Gas Utilities and Infrastructure segment and there are no accumulated impairment charges.

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Related Party Transactions

3 Months Ended

Mar. 31, 2022

Related Party Transactions [Abstract]

Related Party Transactions

RELATED PARTY TRANSACTIONS

The Subsidiary Registrants engage in related party transactions in accordance with applicable state and federal commission regulations. Refer to the Condensed Consolidated Balance Sheets of the Subsidiary Registrants for balances due to or due from related parties. Material amounts related to transactions with related parties included on the Condensed Consolidated Statements of Operations and Comprehensive Income are presented in the following table.

	Three Months Ended March 31,
(in millions)	2022		2021
Duke Energy Carolinas
Corporate governance and shared service expenses(a)	$	206	$	203
Indemnification coverages(b)	7		6
Joint Dispatch Agreement (JDA) revenue(c)	26		13
JDA expense(c)	94		40
Intercompany natural gas purchases(d)	13		14
Progress Energy
Corporate governance and shared service expenses(a)	$	196	$	181
Indemnification coverages(b)	11		10
JDA revenue(c)	94		40
JDA expense(c)	26		13
Intercompany natural gas purchases(d)	19		19
Duke Energy Progress
Corporate governance and shared service expenses(a)	$	119	$	105
Indemnification coverages(b)	5		5
JDA revenue(c)	94		40
JDA expense(c)	26		13
Intercompany natural gas purchases(d)	19		19
Duke Energy Florida
Corporate governance and shared service expenses(a)	$	77	$	76
Indemnification coverages(b)	6		5
Duke Energy Ohio
Corporate governance and shared service expenses(a)	$	82	$	79
Indemnification coverages(b)	1		1
Duke Energy Indiana
Corporate governance and shared service expenses(a)	$	124	$	113
Indemnification coverages(b)	2		2
Piedmont
Corporate governance and shared service expenses(a)	$	35	$	33
Indemnification coverages(b)	1		1
Intercompany natural gas sales(d)	32		33
Natural gas storage and transportation costs(e)	6		6

(a)The Subsidiary Registrants are charged their proportionate share of corporate governance and other shared services costs, primarily related to human resources, employee benefits, information technology, legal and accounting fees, as well as other third-party costs. These amounts are primarily recorded in Operation, maintenance and other on the Condensed Consolidated Statements of Operations and Comprehensive Income.

(b)The Subsidiary Registrants incur expenses related to certain indemnification coverages through Bison, Duke Energy’s wholly owned captive insurance subsidiary. These expenses are recorded in Operation, maintenance and other on the Condensed Consolidated Statements of Operations and Comprehensive Income.

(c)Duke Energy Carolinas and Duke Energy Progress participate in a JDA, which allows the collective dispatch of power plants between the service territories to reduce customer rates. Revenues from the sale of power and expenses from the purchase of power pursuant to the JDA are recorded in Operating Revenues and Fuel used in electric generation and purchased power, respectively, on the Condensed Consolidated Statements of Operations and Comprehensive Income.

(d)Piedmont provides long-term natural gas delivery service to certain Duke Energy Carolinas and Duke Energy Progress natural gas-fired generation facilities. Piedmont records the sales in Operating revenues, and Duke Energy Carolinas and Duke Energy Progress record the related purchases as a component of Fuel used in electric generation and purchased power on their respective Condensed Consolidated Statements of Operations and Comprehensive Income.

(e)Piedmont has related party transactions as a customer of its equity method investments in Pine Needle LNG Company, LLC, Hardy Storage Company, LLC and Cardinal Pipeline Company, LLC natural gas storage and transportation facilities. These expenses are included in Cost of natural gas on Piedmont's Condensed Consolidated Statements of Operations and Comprehensive Income.

In addition to the amounts presented above, the Subsidiary Registrants have other affiliate transactions, including rental of office space, participation in a money pool arrangement, other operational transactions, such as pipeline lease arrangements, and their proportionate share of certain charged expenses. These transactions of the Subsidiary Registrants are incurred in the ordinary course of business and are eliminated in consolidation.

As discussed in Note 11, certain trade receivables have been sold by Duke Energy Ohio and Duke Energy Indiana to CRC, an affiliate formed by a subsidiary of Duke Energy. The proceeds obtained from the sales of receivables are largely cash but do include a subordinated note from CRC for a portion of the purchase price.

Intercompany Income Taxes

Duke Energy and the Subsidiary Registrants file a consolidated federal income tax return and other state and jurisdictional returns. The Subsidiary Registrants have a tax sharing agreement with Duke Energy for the allocation of consolidated tax liabilities and benefits. Income taxes recorded represent amounts the Subsidiary Registrants would incur as separate C-Corporations. The following table includes the balance of intercompany income tax receivables and payables for the Subsidiary Registrants.

	Duke				Duke		Duke		Duke		Duke
	Energy		Progress		Energy		Energy		Energy		Energy
(in millions)	Carolinas		Energy		Progress		Florida		Ohio		Indiana		Piedmont
March 31, 2022
Intercompany income tax receivable	$	20	$	49	$	—	$	9	$	5	$	—	$	—
Intercompany income tax payable	—		—		15		—		—		44		45
December 31, 2021
Intercompany income tax receivable	$	—	$	—	$	—	$	40	$	19	$	—	$	—
Intercompany income tax payable	62		—		84		—		—		10		27

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Derivatives and Hedging

3 Months Ended

Mar. 31, 2022

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivatives and Hedging

DERIVATIVES AND HEDGING

The Duke Energy Registrants use commodity and interest rate contracts to manage commodity price risk and interest rate risk. The primary use of commodity derivatives is to hedge the generation portfolio against changes in the prices of electricity and natural gas. Piedmont enters into natural gas supply contracts to provide diversification, reliability and natural gas cost benefits to its customers. Interest rate derivatives are used to manage interest rate risk associated with borrowings.

All derivative instruments not identified as NPNS are recorded at fair value as assets or liabilities on the Condensed Consolidated Balance Sheets. Cash collateral related to derivative instruments executed under master netting arrangements is offset against the collateralized derivatives on the Condensed Consolidated Balance Sheets. The cash impacts of settled derivatives are recorded as operating activities on the Condensed Consolidated Statements of Cash Flows.

INTEREST RATE RISK

The Duke Energy Registrants are exposed to changes in interest rates as a result of their issuance or anticipated issuance of variable-rate and fixed-rate debt and commercial paper. Interest rate risk is managed by limiting variable-rate exposures to a percentage of total debt and by monitoring changes in interest rates. To manage risk associated with changes in interest rates, the Duke Energy Registrants may enter into interest rate swaps, U.S. Treasury lock agreements and other financial contracts. In anticipation of certain fixed-rate debt issuances, a series of forward-starting interest rate swaps or Treasury locks may be executed to lock in components of current market interest rates. These instruments are later terminated prior to or upon the issuance of the corresponding debt.

Cash Flow Hedges

For a derivative designated as hedging the exposure to variable cash flows of a future transaction, referred to as a cash flow hedge, the effective portion of the derivative's gain or loss is initially reported as a component of other comprehensive income and subsequently reclassified into earnings once the future transaction impacts earnings. Amounts for interest rate contracts are reclassified to earnings as interest expense over the term of the related debt. Gains and losses reclassified out of accumulated other comprehensive loss for the three months ended March 31, 2022, and 2021, were not material. Duke Energy's interest rate derivatives designated as hedges include interest rate swaps used to hedge existing debt within the Commercial Renewables segment and forward-starting interest rate swaps not accounted for under regulatory accounting.

Undesignated Contracts

Undesignated contracts primarily include contracts not designated as a hedge because they are accounted for under regulatory accounting or contracts that do not qualify for hedge accounting.

Duke Energy’s interest rate swaps for its regulated operations employ regulatory accounting. With regulatory accounting, the mark-to-market gains or losses on the swaps are deferred as regulatory liabilities or regulatory assets, respectively. Regulatory assets and liabilities are amortized consistent with the treatment of the related costs in the ratemaking process. The accrual of interest on the swaps is recorded as Interest Expense on the Duke Energy Registrant's Condensed Consolidated Statements of Operations and Comprehensive Income.

The following table shows notional amounts of outstanding derivatives related to interest rate risk.

	March 31, 2022
			Duke		Duke		Duke
	Duke		Energy		Energy		Energy
(in millions)	Energy		Carolinas		Indiana		Ohio
Cash flow hedges	$	2,913	$	—	$	—	$	—
Undesignated contracts	577		250		300		27
Total notional amount(a)	$	3,490	$	250	$	300	$	27

	December 31, 2021
			Duke				Duke		Duke		Duke
	Duke		Energy		Progress		Energy		Energy		Energy
(in millions)	Energy		Carolinas		Energy		Progress		Indiana		Ohio
Cash flow hedges	$	2,415	$	—	$	—	$	—	$	—	$	—
Undesignated contracts	1,177		350		500		500		300		27
Total notional amount(a)	$	3,592	$	350	$	500	$	500	$	300	$	27

(a)Duke Energy includes amounts related to consolidated VIEs of $663 million and $665 million in cash flow hedges as of March 31, 2022 and December 31, 2021, respectively.

COMMODITY PRICE RISK

The Duke Energy Registrants are exposed to the impact of changes in the prices of electricity purchased and sold in bulk power markets and natural gas purchases, including Piedmont's natural gas supply contracts. Exposure to commodity price risk is influenced by a number of factors including the term of contracts, the liquidity of markets and delivery locations. To manage risk associated with commodity prices, the Duke Energy Registrants may enter into long-term power purchase or sales contracts and long-term natural gas supply agreements.

Cash Flow Hedges

For derivatives designated as hedging the exposure to variable cash flows of a future transaction, referred to as a cash flow hedge, the derivative's gain or loss is initially reported as a component of other comprehensive income and subsequently reclassified into earnings once the future transaction impacts earnings. Gains and losses reclassified out of accumulated other comprehensive loss for the three months ended March 31, 2022, and 2021, were not material. Duke Energy’s commodity derivatives designated as hedges include long-term electricity sales in the Commercial Renewables segment.

Undesignated Contracts

For the Subsidiary Registrants, bulk power electricity and natural gas purchases flow through fuel adjustment clauses, formula-based contracts or other cost-sharing mechanisms. Differences between the costs included in rates and the incurred costs, including undesignated derivative contracts, are largely deferred as regulatory assets or regulatory liabilities. Piedmont policies allow for the use of financial instruments to hedge commodity price risks. The strategy and objective of these hedging programs are to use the financial instruments to reduce natural gas costs volatility for customers.

Volumes

The tables below include volumes of outstanding commodity derivatives. Amounts disclosed represent the absolute value of notional volumes of commodity contracts excluding NPNS. The Duke Energy Registrants have netted contractual amounts where offsetting purchase and sale contracts exist with identical delivery locations and times of delivery. Where all commodity positions are perfectly offset, no quantities are shown.

	March 31, 2022
		Duke		Duke	Duke	Duke
	Duke	Energy	Progress	Energy	Energy	Energy
	Energy	Carolinas	Energy	Progress	Ohio	Indiana	Piedmont
Electricity (GWh)(a)	16,176	—	—	—	791	4,501	—
Natural gas (millions of dekatherms)	860	284	243	243	—	7	326

	December 31, 2021
		Duke		Duke	Duke	Duke
	Duke	Energy	Progress	Energy	Energy	Energy
	Energy	Carolinas	Energy	Progress	Ohio	Indiana	Piedmont
Electricity (GWh)(a)	22,344	—	—	—	1,681	10,688	—
Natural gas (millions of dekatherms)	823	264	215	215	—	8	336

(a)Duke Energy includes 9,763 GWh and 9,975 GWh related to cash flow hedges as of March 31, 2022, and December 31, 2021, respectively.

LOCATION AND FAIR VALUE OF DERIVATIVE ASSETS AND LIABILITIES RECOGNIZED ON THE CONDENSED CONSOLIDATED BALANCE SHEETS

The following tables show the fair value and balance sheet location of derivative instruments. Although derivatives subject to master netting arrangements are netted on the Condensed Consolidated Balance Sheets, the fair values presented below are shown gross and cash collateral on the derivatives has not been netted against the fair values shown.

Derivative Assets	March 31, 2022
			Duke				Duke		Duke		Duke		Duke
	Duke		Energy		Progress		Energy		Energy		Energy		Energy
(in millions)	Energy		Carolinas		Energy		Progress		Florida		Ohio		Indiana		Piedmont
Commodity Contracts
Not Designated as Hedging Instruments
Current	$	673	$	335	$	295	$	255	$	40	$	—	$	28	$	7
Noncurrent	280		151		130		130		—		—		—		—
Total Derivative Assets – Commodity Contracts	$	953	$	486	$	425	$	385	$	40	$	—	$	28	$	7
Interest Rate Contracts
Designated as Hedging Instruments
Current	$	94	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Noncurrent	37		—		—		—		—		—		—		—
Not Designated as Hedging Instruments
Noncurrent	24		7		—		—		—		—		17		—
Total Derivative Assets – Interest Rate Contracts	$	155	$	7	$	—	$	—	$	—	$	—	$	17	$	—
Total Derivative Assets	$	1,108	$	493	$	425	$	385	$	40	$	—	$	45	$	7

Derivative Liabilities	March 31, 2022
			Duke				Duke		Duke		Duke		Duke
	Duke		Energy		Progress		Energy		Energy		Energy		Energy
(in millions)	Energy		Carolinas		Energy		Progress		Florida		Ohio		Indiana		Piedmont
Commodity Contracts
Designated as Hedging Instruments
Current	$	49	$	—	$	—	$	—	$	—	$	—	$	—	—
Noncurrent	160		—		—		—		—		—		—		—
Not Designated as Hedging Instruments
Current	61		36		—		—		—		—		—		24
Noncurrent	149		1		—		—		—		—		—		149
Total Derivative Liabilities – Commodity Contracts	$	419	$	37	$	—	$	—	$	—	$	—	$	—	$	173
Interest Rate Contracts
Designated as Hedging Instruments
Current	$	4	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Noncurrent	7		—		—		—		—		—		—		—
Not Designated as Hedging Instruments
Current	1		—		—		—		—		1		—		—
Noncurrent	2		—		—		—		—		2		—		—
Total Derivative Liabilities – Interest Rate Contracts	$	14	$	—	$	—	$	—	$	—	$	3	$	—	$	—
Total Derivative Liabilities	$	433	$	37	$	—	$	—	$	—	$	3	$	—	$	173

Derivative Assets	December 31, 2021
			Duke				Duke		Duke		Duke		Duke
	Duke		Energy		Progress		Energy		Energy		Energy		Energy
(in millions)	Energy		Carolinas		Energy		Progress		Florida		Ohio		Indiana		Piedmont
Commodity Contracts
Not Designated as Hedging Instruments
Current	$	199	$	99	$	72	$	72	$	—	$	2	$	23	$	3
Noncurrent	113		63		50		50		—		—		—		—
Total Derivative Assets – Commodity Contracts	$	312	$	162	$	122	$	122	$	—	$	2	$	23	$	3
Interest Rate Contracts
Designated as Hedging Instruments
Current	$	3	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Noncurrent	3		—		—		—		—		—		—		—
Not Designated as Hedging Instruments
Current	2		—		2		2		—		—		—		—
Total Derivative Assets – Interest Rate Contracts	$	8	$	—	$	2	$	2	$	—	$	—	$	—	$	—
Total Derivative Assets	$	320	$	162	$	124	$	124	$	—	$	2	$	23	$	3

Derivative Liabilities	December 31, 2021
			Duke				Duke		Duke		Duke		Duke
	Duke		Energy		Progress		Energy		Energy		Energy		Energy
(in millions)	Energy		Carolinas		Energy		Progress		Florida		Ohio		Indiana		Piedmont
Commodity Contracts
Designated as Hedging Instruments
Current	$	27	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Noncurrent	117		—		—		—		—		—		—		—
Not Designated as Hedging Instruments
Current	72		18		19		5		14		—		13		21
Noncurrent	132		9		5		5		—		—		—		118
Total Derivative Liabilities – Commodity Contracts	$	348	$	27	$	24	$	10	$	14	$	—	$	13	$	139
Interest Rate Contracts
Designated as Hedging Instruments
Current	$	75	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Noncurrent	21		—		—		—		—		—		—		—
Not Designated as Hedging Instruments
Current	10		8		—		—		—		1		—		—
Noncurrent	18		—		—		—		—		4		14		—
Total Derivative Liabilities – Interest Rate Contracts	$	124	$	8	$	—	$	—	$	—	$	5	$	14	$	—
Total Derivative Liabilities	$	472	$	35	$	24	$	10	$	14	$	5	$	27	$	139

OFFSETTING ASSETS AND LIABILITIES

The following tables present the line items on the Condensed Consolidated Balance Sheets where derivatives are reported. Substantially all of Duke Energy's outstanding derivative contracts are subject to enforceable master netting arrangements. The gross amounts offset in the tables below show the effect of these netting arrangements on financial position, and include collateral posted to offset the net position. The amounts shown are calculated by counterparty. Accounts receivable or accounts payable may also be available to offset exposures in the event of bankruptcy. These amounts are not included in the tables below.

Derivative Assets	March 31, 2022
			Duke				Duke		Duke		Duke		Duke
	Duke		Energy		Progress		Energy		Energy		Energy		Energy
(in millions)	Energy		Carolinas		Energy		Progress		Florida		Ohio		Indiana		Piedmont
Current
Gross amounts recognized	$	767	$	335	$	295	$	255	$	40	$	—	$	28	$	7
Gross amounts offset	(255)		(149)		(106)		(106)		—		—		—		—
Net amounts presented in Current Assets: Other	$	512	$	186	$	189	$	149	$	40	$	—	$	28	$	7
Noncurrent
Gross amounts recognized	$	341	$	158	$	130	$	130	$	—	$	—	$	17	$	—
Gross amounts offset	(115)		(64)		(51)		(51)		—		—		—		—
Net amounts presented in Other Noncurrent Assets: Other	$	226	$	94	$	79	$	79	$	—	$	—	$	17	$	—

Derivative Liabilities	March 31, 2022
			Duke				Duke		Duke		Duke		Duke
	Duke		Energy		Progress		Energy		Energy		Energy		Energy
(in millions)	Energy		Carolinas		Energy		Progress		Florida		Ohio		Indiana		Piedmont
Current
Gross amounts recognized	$	115	$	36	$	—	$	—	$	—	$	1	$	—	$	24
Gross amounts offset	—		—		—		—		—		—		—		—
Net amounts presented in Current Liabilities: Other	$	115	$	36	$	—	$	—	$	—	$	1	$	—	$	24
Noncurrent
Gross amounts recognized	$	318	$	1	$	—	$	—	$	—	$	2	$	—	$	149
Gross amounts offset	—		—		—		—		—		—		—		—
Net amounts presented in Other Noncurrent Liabilities: Other	$	318	$	1	$	—	$	—	$	—	$	2	$	—	$	149

Derivative Assets	December 31, 2021
			Duke				Duke		Duke		Duke		Duke
	Duke		Energy		Progress		Energy		Energy		Energy		Energy
(in millions)	Energy		Carolinas		Energy		Progress		Florida		Ohio		Indiana		Piedmont
Current
Gross amounts recognized	$	204	$	99	$	74	$	74	$	—	$	2	$	23	$	3
Gross amounts offset	(25)		(16)		(9)		(9)		—		—		—		—
Net amounts presented in Current Assets: Other	$	179	$	83	$	65	$	65	$	—	$	2	$	23	$	3
Noncurrent
Gross amounts recognized	$	116	$	63	$	50	$	50	$	—	$	—	$	—	$	—
Gross amounts offset	(23)		(15)		(8)		(8)		—		—		—		—
Net amounts presented in Other Noncurrent Assets: Other	$	93	$	48	$	42	$	42	$	—	$	—	$	—	$	—

Derivative Liabilities	December 31, 2021
			Duke				Duke		Duke		Duke		Duke
	Duke		Energy		Progress		Energy		Energy		Energy		Energy
(in millions)	Energy		Carolinas		Energy		Progress		Florida		Ohio		Indiana		Piedmont
Current
Gross amounts recognized	$	184	$	26	$	19	$	5	$	14	$	1	$	13	$	21
Gross amounts offset	(11)		(6)		(5)		(5)		—		—		—		—
Net amounts presented in Current Liabilities: Other	$	173	$	20	$	14	$	—	$	14	$	1	$	13	$	21
Noncurrent
Gross amounts recognized	$	288	$	9	$	5	$	5	$	—	$	4	$	14	$	118
Gross amounts offset	(12)		(8)		(5)		(5)		—		—		—		—
Net amounts presented in Other Noncurrent Liabilities: Other	$	276	$	1	$	—	$	—	$	—	$	4	$	14	$	118

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Investments in Debt and Equity Securities

3 Months Ended

Mar. 31, 2022

Investments, Debt and Equity Securities [Abstract]

Investments In Debt And Equity Securities

INVESTMENTS IN DEBT AND EQUITY SECURITIES

Duke Energy’s investments in debt and equity securities are primarily comprised of investments held in (i) the NDTF at Duke Energy Carolinas, Duke Energy Progress and Duke Energy Florida, (ii) the grantor trusts at Duke Energy Progress, Duke Energy Florida and Duke Energy Indiana related to OPEB plans and (iii) Bison. The Duke Energy Registrants classify investments in debt securities as AFS and investments in equity securities as fair value through net income (FV-NI).

For investments in debt securities classified as AFS, the unrealized gains and losses are included in other comprehensive income until realized, at which time they are reported through net income. For investments in equity securities classified as FV-NI, both realized and unrealized gains and losses are reported through net income. Substantially all of Duke Energy’s investments in debt and equity securities qualify for regulatory accounting, and accordingly, all associated realized and unrealized gains and losses on these investments are deferred as a regulatory asset or liability.

Duke Energy classifies the majority of investments in debt and equity securities as long term, unless otherwise noted.

Investment Trusts

The investments within the Investment Trusts are managed by independent investment managers with discretion to buy, sell and invest pursuant to the objectives set forth by the investment manager agreements and trust agreements. The Duke Energy Registrants have limited oversight of the day-to-day management of these investments. As a result, the ability to hold investments in unrealized loss positions is outside the control of the Duke Energy Registrants. Accordingly, all unrealized losses associated with debt securities within the Investment Trusts are recognized immediately and deferred to regulatory accounts where appropriate.

Other AFS Securities

Unrealized gains and losses on all other AFS securities are included in other comprehensive income until realized, unless it is determined the carrying value of an investment has a credit loss. The Duke Energy Registrants analyze all investment holdings each reporting period to determine whether a decline in fair value is related to a credit loss. If a credit loss exists, the unrealized credit loss is included in earnings. There were no material credit losses as of March 31, 2022, and December 31, 2021.

Other Investments amounts are recorded in Other within Other Noncurrent Assets on the Condensed Consolidated Balance Sheets.

DUKE ENERGY

The following table presents the estimated fair value of investments in debt and equity securities; equity investments are classified as FV-NI and debt investments are classified as AFS.

	March 31, 2022						December 31, 2021
	Gross		Gross				Gross		Gross
	Unrealized		Unrealized		Estimated		Unrealized		Unrealized		Estimated
	Holding		Holding		Fair		Holding		Holding		Fair
(in millions)	Gains		Losses		Value		Gains		Losses		Value
NDTF
Cash and cash equivalents	$	—	$	—	$	128	$	—	$	—	$	160
Equity securities	4,486		62		6,853		4,905		43		7,350
Corporate debt securities	9		43		786		39		6		829
Municipal bonds	2		16		321		14		1		314
U.S. government bonds	10		57		1,561		31		12		1,568
Other debt securities	—		7		177		3		1		180
Total NDTF Investments	$	4,507	$	185	$	9,826	$	4,992	$	63	$	10,401
Other Investments
Cash and cash equivalents	$	—	$	—	$	110	$	—	$	—	$	36
Equity securities	31		4		147		36		—		156
Corporate debt securities	—		7		124		2		1		119
Municipal bonds	1		2		83		3		1		80
U.S. government bonds	—		2		45		—		—		56
Other debt securities	—		2		36		—		1		45
Total Other Investments	$	32	$	17	$	545	$	41	$	3	$	492
Total Investments	$	4,539	$	202	$	10,371	$	5,033	$	66	$	10,893

Realized gains and losses, which were determined on a specific identification basis, from sales of FV-NI and AFS securities for the three months ended March 31, 2022, and 2021, were as follows.

	Three Months Ended
(in millions)	March 31, 2022		March 31, 2021
FV-NI:
Realized gains	$	111	$	140
Realized losses	85		23
AFS:
Realized gains	4		18
Realized losses	23		13

DUKE ENERGY CAROLINAS

The following table presents the estimated fair value of investments in debt and equity securities; equity investments are classified as FV-NI and debt investments are classified as AFS.

	March 31, 2022						December 31, 2021
	Gross		Gross				Gross		Gross
	Unrealized		Unrealized		Estimated		Unrealized		Unrealized		Estimated
	Holding		Holding		Fair		Holding		Holding		Fair
(in millions)	Gains		Losses		Value		Gains		Losses		Value
NDTF
Cash and cash equivalents	$	—	$	—	$	60	$	—	$	—	$	53
Equity securities	2,632		30		3,962		2,887		19		4,265
Corporate debt securities	6		30		503		24		4		506
Municipal bonds	—		5		52		2		—		48
U.S. government bonds	4		21		692		16		3		712
Other debt securities	—		7		172		3		1		175
Total NDTF Investments	$	2,642	$	93	$	5,441	$	2,932	$	27	$	5,759

Realized gains and losses, which were determined on a specific identification basis, from sales of FV-NI and AFS securities for the three months ended March 31, 2022, and 2021, were as follows.

	Three Months Ended
(in millions)	March 31, 2022		March 31, 2021
FV-NI:
Realized gains	$	75	$	128
Realized losses	49		16
AFS:
Realized gains	3		13
Realized losses	16		9

PROGRESS ENERGY

The following table presents the estimated fair value of investments in debt and equity securities; equity investments are classified as FV-NI and debt investments are classified as AFS.

	March 31, 2022						December 31, 2021
	Gross		Gross				Gross		Gross
	Unrealized		Unrealized		Estimated		Unrealized		Unrealized		Estimated
	Holding		Holding		Fair		Holding		Holding		Fair
(in millions)	Gains		Losses		Value		Gains		Losses		Value
NDTF
Cash and cash equivalents	$	—	$	—	$	68	$	—	$	—	$	107
Equity securities	1,854		32		2,891		2,018		24		3,085
Corporate debt securities	3		13		283		15		2		323
Municipal bonds	2		11		269		12		1		266
U.S. government bonds	6		36		869		15		9		856
Other debt securities	—		—		5		—		—		5
Total NDTF Investments	$	1,865	$	92	$	4,385	$	2,060	$	36	$	4,642
Other Investments
Cash and cash equivalents	$	—	$	—	$	17	$	—	$	—	$	20
Municipal bonds	1		—		26		2		—		26
Total Other Investments	$	1	$	—	$	43	$	2	$	—	$	46
Total Investments	$	1,866	$	92	$	4,428	$	2,062	$	36	$	4,688

Realized gains and losses, which were determined on a specific identification basis, from sales of FV-NI and AFS securities for the three months ended March 31, 2022, and 2021, were as follows.

	Three Months Ended
(in millions)	March 31, 2022		March 31, 2021
FV-NI:
Realized gains	$	36	$	12
Realized losses	36		7
AFS:
Realized gains	1		4
Realized losses	6		3

DUKE ENERGY PROGRESS

The following table presents the estimated fair value of investments in debt and equity securities; equity investments are classified as FV-NI and debt investments are classified as AFS.

	March 31, 2022						December 31, 2021
	Gross		Gross				Gross		Gross
	Unrealized		Unrealized		Estimated		Unrealized		Unrealized		Estimated
	Holding		Holding		Fair		Holding		Holding		Fair
(in millions)	Gains		Losses		Value		Gains		Losses		Value
NDTF
Cash and cash equivalents	$	—	$	—	$	58	$	—	$	—	$	94
Equity securities	1,757		32		2,782		1,915		23		2,970
Corporate debt securities	3		12		255		15		2		282
Municipal bonds	2		11		269		12		1		266
U.S. government bonds	6		19		502		15		3		472
Other debt securities	—		—		5		—		—		5
Total NDTF Investments	$	1,768	$	74	$	3,871	$	1,957	$	29	$	4,089
Other Investments
Cash and cash equivalents	$	—	$	—	$	14	$	—	$	—	$	16
Total Other Investments	$	—	$	—	$	14	$	—	$	—	$	16
Total Investments	$	1,768	$	74	$	3,885	$	1,957	$	29	$	4,105

Realized gains and losses, which were determined on a specific identification basis, from sales of FV-NI and AFS securities for the three months ended March 31, 2022, and 2021, were as follows.

	Three Months Ended
(in millions)	March 31, 2022		March 31, 2021
FV-NI:
Realized gains	$	36	$	12
Realized losses	35		7
AFS:
Realized gains	1		4
Realized losses	5		3

DUKE ENERGY FLORIDA

The following table presents the estimated fair value of investments in debt and equity securities; equity investments are classified as FV-NI and debt investments are classified as AFS.

	March 31, 2022						December 31, 2021
	Gross		Gross				Gross		Gross
	Unrealized		Unrealized		Estimated		Unrealized		Unrealized		Estimated
	Holding		Holding		Fair		Holding		Holding		Fair
(in millions)	Gains		Losses		Value		Gains		Losses		Value
NDTF
Cash and cash equivalents	$	—	$	—	$	10	$	—	$	—	$	13
Equity securities	97		—		109		103		1		115
Corporate debt securities	—		1		28		—		—		41
U.S. government bonds	—		17		367		—		6		384
Total NDTF Investments(a)	$	97	$	18	$	514	$	103	$	7	$	553
Other Investments
Cash and cash equivalents	$	—	$	—	$	2	$	—	$	—	$	3
Municipal bonds	1		—		26		2		—		26
Total Other Investments	$	1	$	—	$	28	$	2	$	—	$	29
Total Investments	$	98	$	18	$	542	$	105	$	7	$	582

(a)During the three months ended March 31, 2022, and the year ended December 31, 2021, Duke Energy Florida received reimbursements from the NDTF for costs related to ongoing decommissioning activity of Crystal River Unit 3.

Realized gains and losses, which were determined on a specific identification basis, from sales of FV-NI and AFS securities for the three months ended March 31, 2022, and 2021, were immaterial.

DUKE ENERGY INDIANA

The following table presents the estimated fair value of investments in debt and equity securities; equity investments are measured at FV-NI and debt investments are classified as AFS.

	March 31, 2022						December 31, 2021
	Gross		Gross				Gross		Gross
	Unrealized		Unrealized		Estimated		Unrealized		Unrealized		Estimated
	Holding		Holding		Fair		Holding		Holding		Fair
(in millions)	Gains		Losses		Value		Gains		Losses		Value
Investments
Cash and cash equivalents	$	—	$	—	$	1	$	—	$	—	$	—
Equity securities	4		4		91		6		—		97
Corporate debt securities	—		—		8		—		—		6
Municipal bonds	—		2		49		1		1		46
U.S. government bonds	—		—		6		—		—		12
Total Investments	$	4	$	6	$	155	$	7	$	1	$	161

Realized gains and losses, which were determined on a specific identification basis, from sales of FV-NI and AFS securities for the three months ended March 31, 2022, and 2021, were immaterial.

DEBT SECURITY MATURITIES

The table below summarizes the maturity date for debt securities.

	March 31, 2022
			Duke				Duke		Duke		Duke
	Duke		Energy		Progress		Energy		Energy		Energy
(in millions)	Energy		Carolinas		Energy		Progress		Florida		Indiana
Due in one year or less	$	162	$	7	$	139	$	32	$	107	$	8
Due after one through five years	969		367		528		270		258		24
Due after five through 10 years	536		235		228		212		16		6
Due after 10 years	1,466		810		557		517		40		25
Total	$	3,133	$	1,419	$	1,452	$	1,031	$	421	$	63

XML

Fair Value Measurements

3 Months Ended

Mar. 31, 2022

Fair Value Disclosures [Abstract]

Fair Value Measurements

FAIR VALUE MEASUREMENTS

Fair value is the exchange price to sell an asset or transfer a liability in an orderly transaction between market participants at the measurement date. The fair value definition focuses on an exit price versus the acquisition cost. Fair value measurements use market data or assumptions market participants would use in pricing the asset or liability, including assumptions about risk and the risks inherent in the inputs to the valuation technique. These inputs may be readily observable, corroborated by market data or generally unobservable. Valuation techniques maximize the use of observable inputs and minimize use of unobservable inputs. A midmarket pricing convention (the midpoint price between bid and ask prices) is permitted for use as a practical expedient.

Fair value measurements are classified in three levels based on the fair value hierarchy as defined by GAAP. Certain investments are not categorized within the fair value hierarchy. These investments are measured at fair value using the net asset value (NAV) per share practical expedient. The NAV is derived based on the investment cost, less any impairment, plus or minus changes resulting from observable price changes for an identical or similar investment of the same issuer.

Fair value accounting guidance permits entities to elect to measure certain financial instruments that are not required to be accounted for at fair value, such as equity method investments or the company’s own debt, at fair value. The Duke Energy Registrants have not elected to record any of these items at fair value.

Valuation methods of the primary fair value measurements disclosed below are as follows.

Investments in equity securities

The majority of investments in equity securities are valued using Level 1 measurements. Investments in equity securities are typically valued at the closing price in the principal active market as of the last business day of the quarter. Principal active markets for equity prices include published exchanges such as the New York Stock Exchange and Nasdaq Stock Market. Foreign equity prices are translated from their trading currency using the currency exchange rate in effect at the close of the principal active market. There was no after-hours market activity that was required to be reflected in the reported fair value measurements.

Investments in debt securities

Most investments in debt securities are valued using Level 2 measurements because the valuations use interest rate curves and credit spreads applied to the terms of the debt instrument (maturity and coupon interest rate) and consider the counterparty credit rating. If the market for a particular fixed-income security is relatively inactive or illiquid, the measurement is Level 3.

Commodity derivatives

Commodity derivatives with clearinghouses are classified as Level 1. Commodity derivatives with observable forward curves are classified as Level 2. If forward price curves are not observable for the full term of the contract and the unobservable period had more than an insignificant impact on the valuation, the commodity derivative is classified as Level 3. In isolation, increases (decreases) in natural gas forward prices result in favorable (unfavorable) fair value adjustments for natural gas purchase contracts; and increases (decreases) in electricity forward prices result in unfavorable (favorable) fair value adjustments for electricity sales contracts. Duke Energy regularly evaluates and validates pricing inputs used to estimate the fair value of natural gas commodity contracts by a market participant price verification procedure. This procedure provides a comparison of internal forward commodity curves to market participant generated curves.

Interest rate derivatives

Most over-the-counter interest rate contract derivatives are valued using financial models that utilize observable inputs for similar instruments and are classified as Level 2. Inputs include forward interest rate curves, notional amounts, interest rates and credit quality of the counterparties.

Other fair value considerations

See Note 11 in Duke Energy's Annual Report on Form 10-K for the year ended December 31, 2021, for a discussion of the valuation of goodwill and intangible assets.

DUKE ENERGY

The following tables provide recorded balances for assets and liabilities measured at fair value on a recurring basis on the Condensed Consolidated Balance Sheets. Derivative amounts in the tables below for all Duke Energy Registrants exclude cash collateral, which is disclosed in Note 8. See Note 9 for additional information related to investments by major security type for the Duke Energy Registrants.

	March 31, 2022
(in millions)	Total Fair Value		Level 1		Level 2		Level 3		Not Categorized
NDTF cash and cash equivalents	$	128	$	128	$	—	$	—	$	—
NDTF equity securities	6,853		6,806		—		—		47
NDTF debt securities	2,845		947		1,898		—		—
Other equity securities	147		147		—		—		—
Other debt securities	288		39		249		—		—
Other cash and cash equivalents	110		110		—		—		—
Derivative assets	1,108		27		1,071		10		—
Total assets	11,479		8,204		3,218		10		47
Derivative liabilities	(433)		—		(224)		(209)		—
Net assets (liabilities)	$	11,046	$	8,204	$	2,994	$	(199)	$	47

	December 31, 2021
(in millions)	Total Fair Value		Level 1		Level 2		Level 3		Not Categorized
NDTF cash and cash equivalents	$	160	$	160	$	—	$	—	$	—
NDTF equity securities	7,350		7,300		—		—		50
NDTF debt securities	2,891		967		1,924		—		—
Other equity securities	156		156		—		—		—
Other debt securities	300		45		255		—		—
Other cash and cash equivalents	36		36		—		—		—
Derivative assets	320		3		293		24		—
Total assets	11,213		8,667		2,472		24		50
Derivative liabilities	(472)		(13)		(314)		(145)		—
Net assets (liabilities)	$	10,741	$	8,654	$	2,158	$	(121)	$	50

The following tables provide reconciliations of beginning and ending balances of assets and liabilities measured at fair value using Level 3 measurements.

	Derivatives (net)
	Three Months Ended March 31,
(in millions)	2022		2021
Balance at beginning of period	$	(121)	$	(77)
Total pretax realized or unrealized losses included in comprehensive income	(68)		(44)
Purchases, sales, issuances and settlements:
Settlements	(3)		(7)
Total (losses) gains included on the Condensed Consolidated Balance Sheet	(7)		2
Balance at end of period	$	(199)	$	(126)

DUKE ENERGY CAROLINAS

The following tables provide recorded balances for assets and liabilities measured at fair value on a recurring basis on the Condensed Consolidated Balance Sheets.

	March 31, 2022
(in millions)	Total Fair Value		Level 1		Level 2		Not Categorized
NDTF cash and cash equivalents	$	60	$	60	$	—	$	—
NDTF equity securities	3,962		3,915		—		47
NDTF debt securities	1,419		349		1,070		—
Derivative assets	493		—		493		—
Total assets	5,934		4,324		1,563		47
Derivative liabilities	(37)		—		(37)		—
Net assets	$	5,897	$	4,324	$	1,526	$	47

	December 31, 2021
(in millions)	Total Fair Value		Level 1		Level 2		Not Categorized
NDTF cash and cash equivalents	$	53	$	53	$	—	$	—
NDTF equity securities	4,265		4,215		—		50
NDTF debt securities	1,441		339		1,102		—
Derivative assets	162		—		162		—
Total assets	5,921		4,607		1,264		50
Derivative liabilities	(35)		—		(35)		—
Net assets	$	5,886	$	4,607	$	1,229	$	50

PROGRESS ENERGY

The following tables provide recorded balances for assets and liabilities measured at fair value on a recurring basis on the Condensed Consolidated Balance Sheets.

	March 31, 2022						December 31, 2021
(in millions)	Total Fair Value		Level 1		Level 2		Total Fair Value		Level 1		Level 2
NDTF cash and cash equivalents	$	68	$	68	$	—	$	107	$	107	$	—
NDTF equity securities	2,891		2,891		—		3,085		3,085		—
NDTF debt securities	1,426		598		828		1,450		628		822
Other debt securities	26		—		26		26		—		26
Other cash and cash equivalents	17		17		—		20		20		—
Derivative assets	425		2		423		124		—		124
Total assets	4,853		3,576		1,277		4,812		3,840		972
Derivative liabilities	—		—		—		(24)		—		(24)
Net assets	$	4,853	$	3,576	$	1,277	$	4,788	$	3,840	$	948

DUKE ENERGY PROGRESS

The following tables provide recorded balances for assets and liabilities measured at fair value on a recurring basis on the Condensed Consolidated Balance Sheets.

	March 31, 2022						December 31, 2021
(in millions)	Total Fair Value		Level 1		Level 2		Total Fair Value		Level 1		Level 2
NDTF cash and cash equivalents	$	58	$	58	$	—	$	94	$	94	$	—
NDTF equity securities	2,782		2,782		—		2,970		2,970		—
NDTF debt securities	1,031		279		752		1,025		289		736
Other cash and cash equivalents	14		14		—		16		16		—
Derivative assets	385		2		383		124		—		124
Total assets	4,270		3,135		1,135		4,229		3,369		860
Derivative liabilities	—		—		—		(10)		—		(10)
Net assets	$	4,270	$	3,135	$	1,135	$	4,219	$	3,369	$	850

DUKE ENERGY FLORIDA

The following tables provide recorded balances for assets and liabilities measured at fair value on a recurring basis on the Condensed Consolidated Balance Sheets.

	March 31, 2022						December 31, 2021
(in millions)	Total Fair Value		Level 1		Level 2		Total Fair Value		Level 1		Level 2
NDTF cash and cash equivalents	$	10	$	10	$	—	$	13	$	13	$	—
NDTF equity securities	109		109		—		115		115		—
NDTF debt securities	395		319		76		425		339		86
Other debt securities	26		—		26		26		—		26
Other cash and cash equivalents	2		2		—		3		3		—
Derivative assets	40		—		40		—		—		—
Total assets	582		440		142		582		470		112
Derivative liabilities	—		—		—		(14)		—		(14)
Net assets	$	582	$	440	$	142	$	568	$	470	$	98

DUKE ENERGY OHIO

The recorded balances for assets and liabilities measured at fair value on a recurring basis on the Condensed Consolidated Balance Sheets were not material at March 31, 2022, and December 31, 2021.

DUKE ENERGY INDIANA

The following tables provide recorded balances for assets and liabilities measured at fair value on a recurring basis on the Condensed Consolidated Balance Sheets.

	March 31, 2022								December 31, 2021
(in millions)	Total Fair Value		Level 1		Level 2		Level 3		Total Fair Value		Level 1		Level 2		Level 3
Other equity securities	$	91	$	91	$	—	$	—	$	97	$	97	$	—	$	—
Other debt securities	63		—		63		—		64		—		64		—
Other cash and cash equivalents	1		1		—		—		—		—		—		—
Derivative assets	45		18		17		10		23		1		—		22
Total assets	200		110		80		10		184		98		64		22
Derivative liabilities	—		—		—		—		(27)		(13)		(14)		—
Net assets	$	200	$	110	$	80	$	10	$	157	$	85	$	50	$	22

The following table provides a reconciliation of beginning and ending balances of assets and liabilities measured at fair value using Level 3 measurements.

	Derivatives (net)
	Three Months Ended March 31,
(in millions)	2022		2021
Balance at beginning of period	$	22	$	6
Purchases, sales, issuances and settlements:
Settlements	(6)		(6)
Total (losses) gains included on the Condensed Consolidated Balance Sheet	(6)		2
Balance at end of period	$	10	$	2

PIEDMONT

The following tables provide recorded balances for assets and liabilities measured at fair value on a recurring basis on the Condensed Consolidated Balance Sheets.

	March 31, 2022						December 31, 2021
(in millions)	Total Fair Value		Level 1		Level 2		Total Fair Value		Level 1		Level 2
Derivative assets	$	7	$	7	$	—	$	3	$	3	$	—
Derivative liabilities	(173)		—		(173)		(139)		—		(139)
Net (liabilities) assets	$	(166)	$	7	$	(173)	$	(136)	$	3	$	(139)

QUANTITATIVE INFORMATION ABOUT UNOBSERVABLE INPUTS

The following tables include quantitative information about the Duke Energy Registrants' derivatives classified as Level 3.

	March 31, 2022
										Weighted
	Fair Value									Average
Investment Type	(in millions)		Valuation Technique	Unobservable Input	Range					Range
Duke Energy
Electricity contracts	$	(210)	RTO forward pricing	Forward electricity curves – price per MWh	$	20.33	-	$	187.82	$	46.51
Duke Energy Ohio
FTRs	1		RTO auction pricing	FTR price – per MWh	0.16		-	1.26		0.63
Duke Energy Indiana
FTRs	10		RTO auction pricing	FTR price – per MWh	(0.46)		-	17.24		2.32
Duke Energy
Total Level 3 derivatives	$	(199)

	December 31, 2021
									Weighted
	Fair Value								Average
Investment Type	(in millions)		Valuation Technique	Unobservable Input	Range				Range
Duke Energy
Electricity contracts	$	(145)	RTO forward pricing	Forward electricity curves – price per MWh	$	19.04	-	$139.11	$37.57
Duke Energy Ohio
FTRs	2		RTO auction pricing	FTR price – per MWh	0.06		-	1.79	0.96
Duke Energy Indiana
FTRs	22		RTO auction pricing	FTR price – per MWh	(1.18)		-	13.11	2.68
Duke Energy
Total Level 3 derivatives	$	(121)

OTHER FAIR VALUE DISCLOSURES

The fair value and book value of long-term debt, including current maturities, is summarized in the following table. Estimates determined are not necessarily indicative of amounts that could have been settled in current markets. Fair value of long-term debt uses Level 2 measurements.

	March 31, 2022				December 31, 2021
(in millions)	Book Value		Fair Value		Book Value		Fair Value
Duke Energy(a)	$	66,080	$	66,633	$	63,835	$	69,683
Duke Energy Carolinas	14,470		15,117		13,275		15,101
Progress Energy	21,657		22,669		20,823		23,751
Duke Energy Progress	11,114		11,260		10,249		11,252
Duke Energy Florida	8,451		8,911		8,482		9,772
Duke Energy Ohio	3,193		3,278		3,193		3,570
Duke Energy Indiana	4,270		4,554		4,323		5,067
Piedmont	2,969		2,984		2,968		3,278

(a)Book value of long-term debt includes $1.2 billion and $1.25 billion at March 31, 2022, and December 31, 2021, respectively, of net unamortized debt discount and premium of purchase accounting adjustments related to the mergers with Progress Energy and Piedmont that are excluded from fair value of long-term debt.

At both March 31, 2022, and December 31, 2021, fair value of cash and cash equivalents, accounts and notes receivable, accounts payable, notes payable and commercial paper and nonrecourse notes payable of VIEs are not materially different from their carrying amounts because of the short-term nature of these instruments and/or because the stated rates approximate market rates.

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Variable Interest Entities

3 Months Ended

Mar. 31, 2022

Variable Interest Entities [Abstract]

Variable Interest Entities

VARIABLE INTEREST ENTITIES

CONSOLIDATED VIEs

The obligations of the consolidated VIEs discussed in the following paragraphs are nonrecourse to the Duke Energy Registrants. The registrants have no requirement to provide liquidity to, purchase assets of or guarantee performance of these VIEs unless noted in the following paragraphs.

No financial support was provided to any of the consolidated VIEs during the three months ended March 31, 2022, and the year ended December 31, 2021, or is expected to be provided in the future that was not previously contractually required.

Receivables Financing – DERF/DEPR/DEFR

DERF, DEPR and DEFR are bankruptcy remote, special purpose subsidiaries of Duke Energy Carolinas, Duke Energy Progress and Duke Energy Florida, respectively. DERF, DEPR and DEFR are wholly owned LLCs with separate legal existence from their parent companies, and their assets are not generally available to creditors of their parent companies. On a revolving basis, DERF, DEPR and DEFR buy certain accounts receivable arising from the sale of electricity and related services from their parent companies.

DERF, DEPR and DEFR borrow amounts under credit facilities to buy these receivables. Borrowing availability from the credit facilities is limited to the amount of qualified receivables purchased, which generally exclude receivables past due more than a predetermined number of days and reserves for expected past-due balances. The sole source of funds to satisfy the related debt obligations is cash collections from the receivables. Amounts borrowed under the credit facilities are reflected on the Condensed Consolidated Balance Sheets as Long-Term Debt.

The most significant activity that impacts the economic performance of DERF, DEPR and DEFR are the decisions made to manage delinquent receivables. Duke Energy Carolinas, Duke Energy Progress and Duke Energy Florida are considered the primary beneficiaries and consolidate DERF, DEPR and DEFR, respectively, as they make those decisions.

Receivables Financing – CRC

CRC is a bankruptcy remote, special purpose entity indirectly owned by Duke Energy. On a revolving basis, CRC buys certain accounts receivable arising from the sale of electricity, natural gas and related services from Duke Energy Ohio and Duke Energy Indiana. CRC borrows amounts under a credit facility to buy the receivables from Duke Energy Ohio and Duke Energy Indiana. Borrowing availability from the credit facility is limited to the amount of qualified receivables sold to CRC, which generally exclude receivables past due more than a predetermined number of days and reserves for expected past-due balances. The sole source of funds to satisfy the related debt obligation is cash collections from the receivables. Amounts borrowed under the credit facility are reflected on Duke Energy's Condensed Consolidated Balance Sheets as Long-Term Debt.

The proceeds Duke Energy Ohio and Duke Energy Indiana receive from the sale of receivables to CRC are approximately 75% cash and 25% in the form of a subordinated note from CRC. The subordinated note is a retained interest in the receivables sold. Depending on collection experience, additional equity infusions to CRC may be required by Duke Energy to maintain a minimum equity balance of $3 million.

CRC is considered a VIE because (i) equity capitalization is insufficient to support its operations, (ii) power to direct the activities that most significantly impact the economic performance of the entity is not held by the equity holder and (iii) deficiencies in net worth of CRC are funded by Duke Energy. The most significant activities that impact the economic performance of CRC are decisions made to manage delinquent receivables. Duke Energy is considered the primary beneficiary and consolidates CRC as it makes these decisions. Neither Duke Energy Ohio nor Duke Energy Indiana consolidate CRC.

Receivables Financing – Credit Facilities

The following table summarizes the amounts and expiration dates of the credit facilities and associated restricted receivables described above.

	Duke Energy
			Duke Energy		Duke Energy		Duke Energy
			Carolinas		Progress		Florida
(in millions)	CRC		DERF		DEPR		DEFR
Expiration date	February 2025		January 2025		April 2023		April 2023
Credit facility amount	$	350	$	475	$	350	$	250
Amounts borrowed at March 31, 2022	350		499		350		250
Amounts borrowed at December 31, 2021	350		475		350		250
Restricted Receivables at March 31, 2022	566		858		658		503
Restricted Receivables at December 31, 2021	587		844		574		427

Nuclear Asset-Recovery Bonds – DEFPF

DEFPF is a bankruptcy remote, wholly owned special purpose subsidiary of Duke Energy Florida. DEFPF was formed in 2016 for the sole purpose of issuing nuclear asset-recovery bonds to finance Duke Energy Florida's unrecovered regulatory asset related to Crystal River Unit 3.

In 2016, DEFPF issued senior secured bonds and used the proceeds to acquire nuclear asset-recovery property from Duke Energy Florida. The nuclear asset-recovery property acquired includes the right to impose, bill, collect and adjust a non-bypassable nuclear asset-recovery charge from all Duke Energy Florida retail customers until the bonds are paid in full and all financing costs have been recovered. The nuclear asset-recovery bonds are secured by the nuclear asset-recovery property and cash collections from the nuclear asset-recovery charges are the sole source of funds to satisfy the debt obligation. The bondholders have no recourse to Duke Energy Florida.

DEFPF is considered a VIE primarily because the equity capitalization is insufficient to support its operations. Duke Energy Florida has the power to direct the significant activities of the VIE as described above and therefore Duke Energy Florida is considered the primary beneficiary and consolidates DEFPF.

The following table summarizes the impact of DEFPF on Duke Energy Florida's Condensed Consolidated Balance Sheets.

(in millions)	March 31, 2022		December 31, 2021
Receivables of VIEs	$	5	$	5
Regulatory Assets: Current	54		54
Current Assets: Other	13		39
Other Noncurrent Assets: Regulatory assets	872		883
Current Liabilities: Other	2		9
Current maturities of long-term debt	56		56
Long-Term Debt	916		946

Storm Recovery Bonds – Duke Energy Carolinas NC Storm Funding and Duke Energy Progress NC Storm Funding

Duke Energy Carolinas NC Storm Funding, LLC. (DECNCSF) and Duke Energy Progress NC Storm Funding, LLC. (DEPNCSF) are bankruptcy remote, wholly owned special purpose subsidiaries of Duke Energy Carolinas and Duke Energy Progress, respectively. These entities were formed in 2021 for the sole purpose of issuing storm recovery bonds to finance certain of Duke Energy Carolinas’ and Duke Energy Progress’ unrecovered regulatory assets related to storm costs.

In November 2021, DECNCSF and DEPNCSF issued $237 million and $770 million of senior secured bonds, respectively and used the proceeds to acquire storm recovery property from Duke Energy Carolinas and Duke Energy Progress. The storm recovery property was created by state legislation and NCUC financing orders for the purpose of financing storm costs incurred in 2018 and 2019. The storm recovery property acquired includes the right to impose, bill, collect and adjust a non-bypassable charge from all Duke Energy Carolinas’ and Duke Energy Progress’ retail customers until the bonds are paid in full and all financing costs have been recovered. The storm recovery bonds are secured by the storm recovery property and cash collections from the storm recovery charges are the sole source of funds to satisfy the debt obligation. The bondholders have no recourse to Duke Energy Carolinas or Duke Energy Progress.

DECNCSF and DEPNCSF are considered VIEs primarily because the equity capitalization is insufficient to support their operations. Duke Energy Carolinas and Duke Energy Progress have the power to direct the significant activities of the VIEs as described above and therefore Duke Energy Carolinas and Duke Energy Progress are considered the primary beneficiaries and consolidate DECNCSF and DEPNCSF, respectively.

The following table summarizes the impact of these VIEs on Duke Energy Carolinas’ and Duke Energy Progress’ Consolidated Balance Sheets.

	March 31, 2022				December 31, 2021
	Duke Energy		Duke Energy		Duke Energy		Duke Energy
(in millions)	Carolinas		Progress		Carolinas		Progress
Regulatory Assets: Current	$	12	$	39	$	12	$	39
Current Assets: Other	4		14		—		—
Other Noncurrent Assets: Regulatory assets	217		711		220		720
Other Noncurrent Assets: Other	1		4		1		4
Current Liabilities: Other	2		6		—		—
Current maturities of long-term debt	10		32		5		15
Long-Term Debt	223		730		228		747

Commercial Renewables

Certain of Duke Energy’s renewable energy facilities are VIEs due to Duke Energy issuing guarantees for debt service and operations and maintenance reserves in support of debt financings. Assets are restricted and cannot be pledged as collateral or sold to third parties without prior approval of debt holders. Additionally, Duke Energy has VIEs associated with tax equity arrangements entered into with third-party investors in order to finance the cost of renewable assets eligible for tax credits. The activities that most significantly impacted the economic performance of these renewable energy facilities were decisions associated with siting, negotiating PPAs and Engineering, Procurement and Construction agreements, and decisions associated with ongoing operations and maintenance-related activities. Duke Energy is considered the primary beneficiary and consolidates the entities as it is responsible for all of these decisions.

The table below presents material balances reported on Duke Energy's Condensed Consolidated Balance Sheets related to Commercial Renewables VIEs.

(in millions)	March 31, 2022		December 31, 2021
Current Assets: Other	$	215	$	215
Property, Plant and Equipment: Cost	7,337		7,339
Accumulated depreciation and amortization	(1,534)		(1,474)
Other Noncurrent Assets: Other	70		62
Current maturities of long-term debt	297		167
Long-Term Debt	1,325		1,475
Other Noncurrent Liabilities: AROs	173		173
Other Noncurrent Liabilities: Other	360		319

NON-CONSOLIDATED VIEs

The following tables summarize the impact of non-consolidated VIEs on the Condensed Consolidated Balance Sheets.

	March 31, 2022
	Duke Energy						Duke		Duke
	Pipeline		Commercial				Energy		Energy
(in millions)	Investments		Renewables		Total		Ohio		Indiana
Receivables from affiliated companies	$	—	$	—	$	—	$	65	$	80
Investments in equity method unconsolidated affiliates	29		504		533		—		—
Deferred tax asset	61		—		61		—		—
Total assets	$	90	$	504	$	594	$	65	$	80
Other current liabilities	50		3		53		—		—
Other noncurrent liabilities	52		3		55		—		—
Total liabilities	$	102	$	6	$	108	$	—	$	—
Net (liabilities) assets	$	(12)	$	498	$	486	$	65	$	80

	December 31, 2021
	Duke Energy						Duke		Duke
	Pipeline		Commercial				Energy		Energy
(in millions)	Investments		Renewables		Total		Ohio		Indiana
Receivables from affiliated companies	$	—	$	—	$	—	$	79	$	97
Investments in equity method unconsolidated affiliates	15		508		523		—		—
Other noncurrent assets	61		—		61		—		—
Total assets	$	76	$	508	$	584	$	79	$	97
Other current liabilities	47		4		51		—		—
Other noncurrent liabilities	54		3		57		—		—
Total liabilities	$	101	$	7	$	108	$	—	$	—
Net (liabilities) assets	$	(25)	$	501	$	476	$	79	$	97

The Duke Energy Registrants are not aware of any situations where the maximum exposure to loss significantly exceeds the carrying values shown above except for certain renewable energy project entities guarantees for debt services and operations and maintenance, as discussed below.

Pipeline Investments

Duke Energy has investments in various joint ventures to construct and operate pipeline projects. These entities are considered VIEs due to having insufficient equity to finance their own activities without subordinated financial support. Duke Energy does not have the power to direct the activities that most significantly impact the economic performance, the obligation to absorb losses or the right to receive benefits of these VIEs and therefore does not consolidate these entities.

Commercial Renewables

Duke Energy has investments in various renewable energy project entities. Duke Energy has a 50% ownership in a VIE, which owns a portfolio of wind projects. This entity is a VIE as a result of Duke Energy issuing guarantees for debt service and operations and maintenance reserves in support of debt financings. Duke Energy does not consolidate this VIE because power to direct and control key activities is shared jointly by Duke Energy and the other owner. Duke Energy also has equity ownership in an entity, which owns a portfolio of fuel cell projects. Duke Energy does not consolidate the fuel cell portfolio as it does not have the power to direct the activities that most significantly impact the economic performance of the entity.

OVEC

Duke Energy Ohio’s 9% ownership interest in OVEC is considered a non-consolidated VIE due to OVEC having insufficient equity to finance its activities without subordinated financial support. The activities that most significantly impact OVEC's economic performance include fuel strategy and supply activities and decisions associated with ongoing operations and maintenance-related activities. Duke Energy Ohio does not have the unilateral power to direct these activities, and therefore, does not consolidate OVEC.

As a counterparty to an Inter-Company Power Agreement (ICPA), Duke Energy Ohio has a contractual arrangement to receive entitlements to capacity and energy from OVEC’s power plants through June 2040 commensurate with its power participation ratio, which is equivalent to Duke Energy Ohio's ownership interest. Costs, including fuel, operating expenses, fixed costs, debt amortization and interest expense, are allocated to counterparties to the ICPA based on their power participation ratio. The value of the ICPA is subject to variability due to fluctuation in power prices and changes in OVEC's cost of business.

CRC

See discussion under Consolidated VIEs for additional information related to CRC.

Amounts included in Receivables from affiliated companies in the above table for Duke Energy Ohio and Duke Energy Indiana reflect their retained interest in receivables sold to CRC. These subordinated notes held by Duke Energy Ohio and Duke Energy Indiana are stated at fair value.

The following table shows the gross and net receivables sold.

	Duke Energy Ohio				Duke Energy Indiana
(in millions)	March 31, 2022		December 31, 2021		March 31, 2022		December 31, 2021
Receivables sold	$	263	$	269	$	305	$	328
Less: Retained interests	65		79		80		97
Net receivables sold	$	198	$	190	$	225	$	231

The following table shows sales and cash flows related to receivables sold.

	Duke Energy Ohio					Duke Energy Indiana
		Three Months Ended					Three Months Ended
		March 31,					March 31,
(in millions)		2022		2021			2022		2021
Sales
Receivables sold		$	663	$	561		$	782	$	698
Loss recognized on sale		3		3			4		3
Cash flows
Cash proceeds from receivables sold		$	674	$	596		$	795	$	746
Collection fees received		—		—			—		—
Return received on retained interests		1		1			2		2

Cash flows from sales of receivables are reflected within Cash Flows From Operating Activities and Cash Flows from Investing Activities on Duke Energy Ohio’s and Duke Energy Indiana’s Condensed Consolidated Statements of Cash Flows.

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Revenue

3 Months Ended

Mar. 31, 2022

Revenue from Contract with Customer [Abstract]

Revenue

REVENUE

Duke Energy earns substantially all of its revenues through its reportable segments, Electric Utilities and Infrastructure, Gas Utilities and Infrastructure and Commercial Renewables.

Electric Utilities and Infrastructure

Electric Utilities and Infrastructure earns the majority of its revenues through retail and wholesale electric service through the generation, transmission, distribution and sale of electricity. Duke Energy generally provides retail and wholesale electric service customers with their full electric load requirements or with supplemental load requirements when the customer has other sources of electricity.

The majority of wholesale revenues are full requirements contracts where the customers purchase the substantial majority of their energy needs and do not have a fixed quantity of contractually required energy or capacity. As such, related forecasted revenues are considered optional purchases. Supplemental requirements contracts that include contracted blocks of energy and capacity at contractually fixed prices have the following estimated remaining performance obligations:

	Remaining Performance Obligations
(in millions)	2022		2023		2024		2025		2026		Thereafter		Total
Progress Energy	$	80	$	53	$	45	$	7	$	7	$	43	$	235
Duke Energy Progress	6		8		8		—		—		—		22
Duke Energy Florida	74		45		37		7		7		43		213
Duke Energy Indiana	2		11		16		17		15		12		73

Revenues for block sales are recognized monthly as energy is delivered and stand-ready service is provided, consistent with invoiced amounts and unbilled estimates.

Gas Utilities and Infrastructure

Gas Utilities and Infrastructure earns its revenue through retail and wholesale natural gas service through the transportation, distribution and sale of natural gas. Duke Energy generally provides retail and wholesale natural gas service customers with all natural gas load requirements. Additionally, while natural gas can be stored, substantially all natural gas provided by Duke Energy is consumed by customers simultaneously with receipt of delivery.

Fixed-capacity payments under long-term contracts for the Gas Utilities and Infrastructure segment include minimum margin contracts and supply arrangements with municipalities and power generation facilities. Revenues for related sales are recognized monthly as natural gas is delivered and stand-ready service is provided, consistent with invoiced amounts and unbilled estimates. Estimated remaining performance obligations are as follows:

	Remaining Performance Obligations
(in millions)	2022		2023		2024		2025		2026		Thereafter		Total
Piedmont	$	48	$	64	$	61	$	60	$	50	$	286	$	569

Commercial Renewables

Commercial Renewables earns the majority of its revenues through long-term PPAs and generally sells all of its wind and solar facility output, electricity and Renewable Energy Certificates (RECs) to customers. Some of these PPAs have been accounted for as leases. For PPAs that are not accounted for as leases, the delivery of electricity and the delivery of RECs are considered separate performance obligations.

Other

The remainder of Duke Energy’s operations is presented as Other, which does not include material revenues from contracts with customers.

Disaggregated Revenues

Disaggregated revenues are presented as follows:

	Three Months Ended March 31, 2022
			Duke				Duke		Duke		Duke		Duke
(in millions)	Duke		Energy		Progress		Energy		Energy		Energy		Energy
By market or type of customer	Energy		Carolinas		Energy		Progress		Florida		Ohio		Indiana		Piedmont
Electric Utilities and Infrastructure
Residential	$	2,767	$	831	$	1,368	$	624	$	744	$	211	$	354	$	—
General	1,604		544		726		325		401		116		218		—
Industrial	772		276		270		194		76		35		192		—
Wholesale	626		113		411		349		62		23		79		—
Other revenues	202		111		211		139		72		21		(36)		—
Total Electric Utilities and Infrastructure revenue from contracts with customers	$	5,971	$	1,875	$	2,986	$	1,631	$	1,355	$	406	$	807	$	—
Gas Utilities and Infrastructure
Residential	$	572	$	—	$	—	$	—	$	—	$	149	$	—	$	423
Commercial	269		—		—		—		—		64		—		204
Industrial	57		—		—		—		—		7		—		50
Power Generation	—		—		—		—		—		—		—		24
Other revenues	115		—		—		—		—		6		—		93
Total Gas Utilities and Infrastructure revenue from contracts with customers	$	1,013	$	—	$	—	$	—	$	—	$	226	$	—	$	794
Commercial Renewables
Revenue from contracts with customers	$	51	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Other
Revenue from contracts with customers	$	7	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Total revenue from contracts with customers	$	7,042	$	1,875	$	2,986	$	1,631	$	1,355	$	632	$	807	$	794
Other revenue sources(a)	$	90	$	13	$	6	$	1	$	—	$	6	$	15	$	11
Total revenues	$	7,132	$	1,888	$	2,992	$	1,632	$	1,355	$	638	$	822	$	805

(a)Other revenue sources include revenues from leases, derivatives and alternative revenue programs that are not considered revenues from contracts with customers. Alternative revenue programs in certain jurisdictions include regulatory mechanisms that periodically adjust for over or under collection of related revenues.

	Three Months Ended March 31, 2021
			Duke				Duke		Duke		Duke		Duke
(in millions)	Duke		Energy		Progress		Energy		Energy		Energy		Energy
By market or type of customer	Energy		Carolinas		Energy		Progress		Florida		Ohio		Indiana		Piedmont
Electric Utilities and Infrastructure
Residential	$	2,462	$	793	$	1,162	$	560	$	602	$	195	$	313	$	—
General	1,419		502		624		306		318		104		189		—
Industrial	662		256		207		145		62		31		167		—
Wholesale	504		114		326		292		34		13		50		—
Other revenues	226		74		160		83		77		22		18		—
Total Electric Utilities and Infrastructure revenue from contracts with customers	$	5,273	$	1,739	$	2,479	$	1,386	$	1,093	$	365	$	737	$	—
Gas Utilities and Infrastructure
Residential	$	460	$	—	$	—	$	—	$	—	$	110	$	—	$	351
Commercial	204		—		—		—		—		48		—		156
Industrial	50		—		—		—		—		7		—		43
Power Generation	—		—		—		—		—		—		—		22
Other revenues	47		—		—		—		—		5		—		26
Total Gas Utilities and Infrastructure revenue from contracts with customers	$	761	$	—	$	—	$	—	$	—	$	170	$	—	$	598
Commercial Renewables
Revenue from contracts with customers	$	54	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Other
Revenue from contracts with customers	$	6	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Total revenue from contracts with customers	$	6,094	$	1,739	$	2,479	$	1,386	$	1,093	$	535	$	737	$	598
Other revenue sources(a)	$	56	$	(23)	$	26	$	15	$	8	$	(3)	$	8	$	8
Total revenues	$	6,150	$	1,716	$	2,505	$	1,401	$	1,101	$	532	$	745	$	606

(a)Other revenue sources include revenues from leases, derivatives and alternative revenue programs that are not considered revenues from contracts with customers. Alternative revenue programs in certain jurisdictions include regulatory mechanisms that periodically adjust for over or under collection of related revenues.

Duke Energy adopted the new guidance for credit losses effective January 1, 2020, using the modified retrospective method of adoption, which does not require restatement of prior year reported results. The following table presents the reserve for credit losses for trade and other receivables based on adoption of the new standard.

	Three Months Ended March 31, 2021 and 2022
			Duke				Duke		Duke		Duke		Duke
	Duke		Energy		Progress		Energy		Energy		Energy		Energy
(in millions)	Energy		Carolinas		Energy		Progress		Florida		Ohio		Indiana		Piedmont
Balance at December 31, 2020	$	146	$	23	$	37	$	23	$	14	$	4	$	3	$	12
Write-Offs	(21)		(8)		(10)		(5)		(5)		—		—		(1)
Credit Loss Expense	17		10		7		2		5		—		—		3
Other Adjustments	5		9		3		3		1		—		—		—
Balance at March 31, 2021	$	147	$	34	$	37	$	23	$	15	$	4	$	3	$	14
Balance at December 31, 2021	$	122	$	42	$	36	$	21	$	16	$	4	$	3	$	15
Write-Offs	(23)		(9)		(10)		(2)		(8)		—		—		(1)
Credit Loss Expense	24		5		12		4		8		—		—		3
Other Adjustments	17		14		13		8		5		—		—		—
Balance at March 31, 2022	$	140	$	52	$	51	$	31	$	21	$	4	$	3	$	17

Trade and other receivables are evaluated based on an estimate of the risk of loss over the life of the receivable and current and historical conditions using supportable assumptions. Management evaluates the risk of loss for trade and other receivables by comparing the historical write-off amounts to total revenue over a specified period. Historical loss rates are adjusted due to the impact of current conditions, as well as forecasted conditions over a reasonable time period. The calculated write-off rate can be applied to the receivable balance for which an established reserve does not already exist. Management reviews the assumptions and risk of loss periodically for trade and other receivables.

The aging of trade receivables is presented in the table below. Duke Energy considers receivables greater than 30 days outstanding past due.

	March 31, 2022
			Duke				Duke		Duke		Duke		Duke
	Duke		Energy		Progress		Energy		Energy		Energy		Energy
(in millions)	Energy		Carolinas		Energy		Progress		Florida		Ohio		Indiana		Piedmont
Unbilled Revenue(a)(b)	$	945	$	339	$	270	$	161	$	109	$	7	$	44	$	64
0-30 days	2,133		518		944		558		386		40		26		215
30-60 days	288		75		111		64		47		8		4		23
60-90 days	102		33		40		22		18		2		3		7
90+ days	274		119		77		39		38		46		9		7
Deferred Payment Arrangements(c)	136		60		61		33		28		2		—		4
Trade and Other Receivables	$	3,878	$	1,144	$	1,503	$	877	$	626	$	105	$	86	$	320

	December 31, 2021
			Duke				Duke		Duke		Duke		Duke
	Duke		Energy		Progress		Energy		Energy		Energy		Energy
(in millions)	Energy		Carolinas		Energy		Progress		Florida		Ohio		Indiana		Piedmont
Unbilled Revenue(a)(b)	$	964	$	316	$	266	$	193	$	73	$	4	$	27	$	106
0-30 days	2,104		595		800		405		393		42		51		202
30-60 days	212		77		72		44		28		4		13		12
60-90 days	88		37		41		21		20		1		1		2
90+ days	249		106		65		37		28		47		11		7
Deferred Payment Arrangements(c)	115		55		45		22		23		2		—		4
Trade and Other Receivables	$	3,732	$	1,186	$	1,289	$	722	$	565	$	100	$	103	$	333

(a)Unbilled revenues are recognized by applying customer billing rates to the estimated volumes of energy or natural gas delivered but not yet billed and are included within Receivables and Receivables of VIEs on the Condensed Consolidated Balance Sheets.

(b)Duke Energy Ohio and Duke Energy Indiana sell, on a revolving basis, nearly all of their retail accounts receivable, including receivables for unbilled revenues, to an affiliate, CRC, and account for the transfers of receivables as sales. Accordingly, the receivables sold are not reflected on the Condensed Consolidated Balance Sheets of Duke Energy Ohio and Duke Energy Indiana. See Note 11 for further information. These receivables for unbilled revenues are $63 million and $100 million for Duke Energy Ohio and Duke Energy Indiana, respectively, as of March 31, 2022, and $82 million and $121 million for Duke Energy Ohio and Duke Energy Indiana, respectively, as of December 31, 2021.

(c)Due to certain customer financial hardships created by the COVID-19 pandemic and resulting stay-at-home orders, Duke Energy permitted customers to defer payment of past-due amounts through an installment payment plan over a period of several months.

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Stockholders' Equity

3 Months Ended

Mar. 31, 2022

Equity [Abstract]

Stockholders' Equity

STOCKHOLDERS' EQUITYBasic EPS is computed by dividing net income available to Duke Energy common stockholders, as adjusted for distributed and undistributed earnings allocated to participating securities and accumulated preferred dividends, by the weighted average number of common shares outstanding during the period. Diluted EPS is computed by dividing net income available to Duke Energy common stockholders, as adjusted for distributed and undistributed earnings allocated to participating securities and accumulated preferred dividends, by the diluted weighted average number of common shares outstanding during the period. Diluted EPS reflects the potential dilution that could occur if securities or other agreements to issue common stock, such as equity forward sale agreements, were exercised or settled. Duke Energy’s participating securities are restricted stock units that are entitled to dividends declared on Duke Energy common stock during the restricted stock unit’s vesting periods. Dividends declared on preferred stock are recorded on the Condensed Consolidated Statements of Operations as a reduction of net income to arrive at net income available to Duke Energy common stockholders. Dividends accumulated on preferred stock are an adjustment to net income used in the calculation of basic and diluted EPS.

The following table presents Duke Energy’s basic and diluted EPS calculations, the weighted average number of common shares outstanding and common and preferred share dividends declared.

	Three Months Ended March 31,
(in millions, except per share amounts)	2022		2021
Net income available to Duke Energy common stockholders	$	818	$	953
Accumulated preferred stock dividends adjustment	12		12
Less: Impact of participating securities	1		1
Income from continuing operations available to Duke Energy common stockholders	$	829	$	964
Weighted average common shares outstanding – basic and diluted	770		769
EPS available to Duke Energy common stockholders
Basic and diluted	$	1.08	$	1.25
Potentially dilutive items excluded from the calculation(a)	2		2
Dividends declared per common share	$	0.985	$	0.965
Dividends declared on Series A preferred stock per depositary share(b)	$	0.359	$	0.359
Dividends declared on Series B preferred stock per share(c)	$	24.375	$	24.375

(a)Performance stock awards were not included in the dilutive securities calculation because the performance measures related to the awards had not been met.

(b)5.75% Series A Cumulative Redeemable Perpetual Preferred Stock dividends are payable quarterly in arrears on the 16th day of March, June, September and December. The preferred stock has a $25 liquidation preference per depositary share.

(c)4.875% Series B Fixed-Rate Reset Cumulative Redeemable Perpetual Preferred Stock dividends are payable semiannually in arrears on the 16th day of March and September. The preferred stock has a $1,000 liquidation preference per share.

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Employee Benefit Plans

3 Months Ended

Mar. 31, 2022

Retirement Benefits [Abstract]

Employee Benefit Plans

EMPLOYEE BENEFIT PLANS

DEFINED BENEFIT RETIREMENT PLANS

Duke Energy and certain subsidiaries maintain, and the Subsidiary Registrants participate in, qualified and non-qualified, non-contributory defined benefit retirement plans. Duke Energy's policy is to fund amounts on an actuarial basis to provide assets sufficient to meet benefit payments to be paid to plan participants.

QUALIFIED PENSION PLANS

The following tables include the components of net periodic pension costs for qualified pension plans.

	Three Months Ended March 31, 2022
			Duke				Duke		Duke		Duke		Duke
	Duke		Energy		Progress		Energy		Energy		Energy		Energy
(in millions)	Energy		Carolinas		Energy		Progress		Florida		Ohio		Indiana		Piedmont
Service cost	$	40	$	12	$	12	$	7	$	4	$	1	$	2	$	1
Interest cost on projected benefit obligation	58		14		18		8		10		3		5		2
Expected return on plan assets	(140)		(38)		(46)		(22)		(24)		(5)		(9)		(6)
Amortization of actuarial loss	24		5		6		3		3		1		2		2
Amortization of prior service credit	(5)		(1)		—		—		—		—		—		(2)
Amortization of settlement charges	2		1		1		—		—		—		—		—
Net periodic pension costs	$	(21)	$	(7)	$	(9)	$	(4)	$	(7)	$	—	$	—	$	(3)

	Three Months Ended March 31, 2021
			Duke				Duke		Duke		Duke		Duke
	Duke		Energy		Progress		Energy		Energy		Energy		Energy
(in millions)	Energy		Carolinas		Energy		Progress		Florida		Ohio		Indiana		Piedmont
Service cost	$	44	$	14	$	13	$	7	$	5	$	1	$	2	$	1
Interest cost on projected benefit obligation	55		13		17		7		10		3		5		2
Expected return on plan assets	(139)		(35)		(47)		(21)		(26)		(7)		(10)		(5)
Amortization of actuarial loss	33		7		10		5		5		2		3		2
Amortization of prior service credit	(7)		(2)		(1)		—		—		—		—		(1)
Amortization of settlement charges	2		1		1		—		—		—		—		—
Net periodic pension costs	$	(12)	$	(2)	$	(7)	$	(2)	$	(6)	$	(1)	$	—	$	(1)

NON-QUALIFIED PENSION PLANS

Net periodic pension costs for non-qualified pension plans were not material for the three months ended March 31, 2022, and 2021.

OTHER POST-RETIREMENT BENEFIT PLANS

Net periodic costs for OPEB plans were not material for the three months ended March 31, 2022, and 2021.

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Income Taxes

3 Months Ended

Mar. 31, 2022

Income Tax Disclosure [Abstract]

Income Taxes

INCOME TAXES

EFFECTIVE TAX RATES

The ETRs from continuing operations for each of the Duke Energy Registrants are included in the following table.

	Three Months Ended
	March 31,
	2022		2021
Duke Energy	(1.7)	%	8.2	%
Duke Energy Carolinas	7.4	%	6.9	%
Progress Energy	15.9	%	12.9	%
Duke Energy Progress	14.0	%	8.3	%
Duke Energy Florida	20.1	%	19.3	%
Duke Energy Ohio	(266.7)	%	13.3	%
Duke Energy Indiana	31.9	%	17.6	%
Piedmont	13.4	%	11.4	%

The decrease in the ETR for Duke Energy for the three months ended March 31, 2022, was primarily due to an increase in the amortization of excess deferred taxes related to the Duke Energy Ohio MGP Settlement.

The increase in the ETR for Progress Energy for the three months ended March 31, 2022, was primarily due to a decrease in the amortization of excess deferred taxes.

The increase in the ETR for Duke Energy Progress for the three months ended March 31, 2022, was primarily due to a decrease in the amortization of excess deferred taxes.

The decrease in the ETR for Duke Energy Ohio for the three months ended March 31, 2022, was primarily due to an increase in the amortization of excess deferred taxes related to the MGP Settlement.

The increase in the ETR for Duke Energy Indiana for the three months ended March 31, 2022, was primarily due to the coal ash impairment based on the Indiana Supreme Court Opinion.

The increase in the ETR for Piedmont for the three months ended March 31, 2022, was primarily due to a decrease in the amortization of excess deferred taxes.

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Subsequent Events	3 Months Ended
	Mar. 31, 2022
Subsequent Events [Abstract]
Subsequent Events	SUBSEQUENT EVENTSFor information on subsequent events related to regulatory matters, and commitments and contingencies, see Notes 3 and 4.

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Organization and Basis of Presentation (Policy)

3 Months Ended

Mar. 31, 2022

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Basis of Presentation

BASIS OF PRESENTATION

These Condensed Consolidated Financial Statements have been prepared in accordance with GAAP for interim financial information and with the instructions to Form 10-Q and Regulation S-X. Accordingly, these Condensed Consolidated Financial Statements do not include all information and notes required by GAAP for annual financial statements and should be read in conjunction with the Consolidated Financial Statements in the Duke Energy Registrants’ combined Annual Report on Form 10-K for the year ended December 31, 2021.

The information in these combined notes relates to each of the Duke Energy Registrants as noted in the Index to Combined Notes to Condensed Consolidated Financial Statements. However, none of the registrants make any representations as to information related solely to Duke Energy or the subsidiaries of Duke Energy other than itself.

These Condensed Consolidated Financial Statements, in the opinion of the respective companies’ management, reflect all normal recurring adjustments necessary to fairly present the financial position and results of operations of each of the Duke Energy Registrants. Amounts reported in Duke Energy’s interim Condensed Consolidated Statements of Operations and each of the Subsidiary Registrants’ interim Condensed Consolidated Statements of Operations and Comprehensive Income are not necessarily indicative of amounts expected for the respective annual periods due to effects of seasonal temperature variations on energy consumption, regulatory rulings, timing of maintenance on electric generating units, changes in mark-to-market valuations, changing commodity prices and other factors.

In preparing financial statements that conform to GAAP, management must make estimates and assumptions that affect the reported amounts of assets and liabilities, the reported amounts of revenues and expenses and the disclosure of contingent assets and liabilities at the date of the financial statements. Actual results could differ from those estimates.

Basis of Consolidation and Noncontrolling Interest

BASIS OF CONSOLIDATION

These Condensed Consolidated Financial Statements include, after eliminating intercompany transactions and balances, the accounts of the Duke Energy Registrants and subsidiaries or VIEs where the respective Duke Energy Registrants have control. See Note 11 for additional information on VIEs. These Condensed Consolidated Financial Statements also reflect the Duke Energy Registrants’ proportionate share of certain jointly owned generation and transmission facilities.

NONCONTROLLING INTEREST

Duke Energy maintains a controlling financial interest in certain less than wholly owned nonregulated subsidiaries. As a result, Duke Energy consolidates these subsidiaries and presents the third-party investors' portion of Duke Energy's net income (loss), net assets and comprehensive income (loss) as noncontrolling interest. Noncontrolling interest is included as a component of equity on the Condensed Consolidated Balance Sheets.

Several operating agreements of Duke Energy's subsidiaries with noncontrolling interest are subject to allocations of earnings, tax attributes and cash flows in accordance with contractual agreements that vary throughout the lives of the subsidiaries. Therefore, Duke Energy and the other investors' (the owners) interests in the subsidiaries are not fixed, and the subsidiaries apply the Hypothetical Liquidation at Book Value (HLBV) method in allocating income or loss and other comprehensive income or loss (all measured on a pretax basis) to the owners. The HLBV method measures the amounts that each owner would hypothetically claim at each balance sheet reporting date, including tax benefits realized by the owners over the IRS recapture period, upon a hypothetical liquidation of the subsidiary at the net book value of its underlying assets. The change in the amount that each owner would hypothetically receive at the reporting date compared to the amount it would have received on the previous reporting date represents the amount of income or loss allocated to each owner for the reporting period.

During September 2021, Duke Energy completed the initial minority interest investment in a portion of Duke Energy Indiana to an affiliate of GIC. GIC's ownership interest in Duke Energy Indiana represents a noncontrolling interest. See Note 2 for additional information on the sale.

Other operating agreements of Duke Energy's subsidiaries with noncontrolling interest allocate profit and loss based on their pro rata shares of the ownership interest in the respective subsidiary. Therefore, Duke Energy allocates net income or loss and other comprehensive income or loss of these subsidiaries to the owners based on their pro rata shares.

Cash, Cash Equivalents, and Restricted Cash

CASH, CASH EQUIVALENTS AND RESTRICTED CASHDuke Energy, Duke Energy Carolinas, Progress Energy, Duke Energy Progress and Duke Energy Florida have restricted cash balances related primarily to collateral assets, escrow deposits and VIEs. See Notes 9 and 11 for additional information. Restricted cash amounts are included in Other within Current Assets and Other Noncurrent Assets on the Condensed Consolidated Balance Sheets.

New Accounting Standards

NEW ACCOUNTING STANDARDS

No new accounting standards were adopted by the Duke Energy Registrants in 2022.

Environmental Costs

Liabilities are recorded when losses become probable and are reasonably estimable.Costs are typically expensed as Operation, maintenance and other on the Condensed Consolidated Statements of Operations unless regulatory recovery of the costs is deemed probable.

Derivatives

Duke Energy’s interest rate swaps for its regulated operations employ regulatory accounting. With regulatory accounting, the mark-to-market gains or losses on the swaps are deferred as regulatory liabilities or regulatory assets, respectively. Regulatory assets and liabilities are amortized consistent with the treatment of the related costs in the ratemaking process. The accrual of interest on the swaps is recorded as Interest Expense on the Duke Energy Registrant's Condensed Consolidated Statements of Operations and Comprehensive Income.

Cash Flow Hedges

For derivatives designated as hedging the exposure to variable cash flows of a future transaction, referred to as a cash flow hedge, the derivative's gain or loss is initially reported as a component of other comprehensive income and subsequently reclassified into earnings once the future transaction impacts earnings. Gains and losses reclassified out of accumulated other comprehensive loss for the three months ended March 31, 2022, and 2021, were not material. Duke Energy’s commodity derivatives designated as hedges include long-term electricity sales in the Commercial Renewables segment.

Undesignated Contracts

For the Subsidiary Registrants, bulk power electricity and natural gas purchases flow through fuel adjustment clauses, formula-based contracts or other cost-sharing mechanisms. Differences between the costs included in rates and the incurred costs, including undesignated derivative contracts, are largely deferred as regulatory assets or regulatory liabilities. Piedmont policies allow for the use of financial instruments to hedge commodity price risks. The strategy and objective of these hedging programs are to use the financial instruments to reduce natural gas costs volatility for customers.

Investments

As a result, the ability to hold investments in unrealized loss positions is outside the control of the Duke Energy Registrants. Accordingly, all unrealized losses associated with debt securities within the Investment Trusts are recognized immediately and deferred to regulatory accounts where appropriate.Unrealized gains and losses on all other AFS securities are included in other comprehensive income until realized, unless it is determined the carrying value of an investment has a credit loss. The Duke Energy Registrants analyze all investment holdings each reporting period to determine whether a decline in fair value is related to a credit loss. If a credit loss exists, the unrealized credit loss is included in earnings.

Revenue from Contract with Customer

Duke Energy earns substantially all of its revenues through its reportable segments, Electric Utilities and Infrastructure, Gas Utilities and Infrastructure and Commercial Renewables.

Earnings Per Share

Basic EPS is computed by dividing net income available to Duke Energy common stockholders, as adjusted for distributed and undistributed earnings allocated to participating securities and accumulated preferred dividends, by the weighted average number of common shares outstanding during the period. Diluted EPS is computed by dividing net income available to Duke Energy common stockholders, as adjusted for distributed and undistributed earnings allocated to participating securities and accumulated preferred dividends, by the diluted weighted average number of common shares outstanding during the period. Diluted EPS reflects the potential dilution that could occur if securities or other agreements to issue common stock, such as equity forward sale agreements, were exercised or settled. Duke Energy’s participating securities are restricted stock units that are entitled to dividends declared on Duke Energy common stock during the restricted stock unit’s vesting periods. Dividends declared on preferred stock are recorded on the Condensed Consolidated Statements of Operations as a reduction of net income to arrive at net income available to Duke Energy common stockholders. Dividends accumulated on preferred stock are an adjustment to net income used in the calculation of basic and diluted EPS.

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Organization and Basis of Presentation (Tables)

3 Months Ended

Mar. 31, 2022

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of Allocated Losses from Subsidiaries, Noncontrolling Interest

The following table presents allocated losses to noncontrolling interest for the three months ended March 31, 2022, and 2021.

	Three Months Ended March 31,
(in millions)	2022		2021
Noncontrolling Interest Allocation of Income
Allocated losses to noncontrolling tax equity members utilizing the HLBV method	$	24	$	43
Allocated losses to noncontrolling members based on pro rata shares of ownership	13		8
Total Noncontrolling Interest Allocated Losses	$	37	$	51

Schedule of Cash, Cash Equivalents and Restricted Cash

The following table presents the components of cash, cash equivalents and restricted cash included in the Condensed Consolidated Balance Sheets.

	March 31, 2022										December 31, 2021
			Duke				Duke		Duke				Duke				Duke		Duke
	Duke		Energy		Progress		Energy		Energy		Duke		Energy		Progress		Energy		Energy
	Energy		Carolinas		Energy		Progress		Florida		Energy		Carolinas		Energy		Progress		Florida
Current Assets
Cash and cash equivalents	$	853	$	4	$	63	$	42	$	13	$	343	$	7	$	70	$	35	$	23
Other	151		4		28		13		13		170		—		39		—		39
Other Noncurrent Assets
Other	16		1		4		4		—		7		1		4		4		—
Total cash, cash equivalents and restricted cash	$	1,020	$	9	$	95	$	59	$	26	$	520	$	8	$	113	$	39	$	62

Schedule of Utility Inventory

The components of inventory are presented in the tables below.

	March 31, 2022
			Duke				Duke		Duke		Duke		Duke
	Duke		Energy		Progress		Energy		Energy		Energy		Energy
(in millions)	Energy		Carolinas		Energy		Progress		Florida		Ohio		Indiana		Piedmont
Materials and supplies	$	2,455	$	810	$	1,089	$	744	$	345	$	89	$	320	$	14
Coal	469		196		149		93		56		16		108		—
Natural gas, oil and other fuel	247		34		165		103		62		9		2		37
Total inventory	$	3,171	$	1,040	$	1,403	$	940	$	463	$	114	$	430	$	51

	December 31, 2021
			Duke				Duke		Duke		Duke		Duke
	Duke		Energy		Progress		Energy		Energy		Energy		Energy
(in millions)	Energy		Carolinas		Energy		Progress		Florida		Ohio		Indiana		Piedmont
Materials and supplies	$	2,397	$	793	$	1,067	$	729	$	338	$	80	$	311	$	14
Coal	486		195		167		94		73		19		105		—
Natural gas, oil and other fuel	316		38		164		98		66		17		2		95
Total inventory	$	3,199	$	1,026	$	1,398	$	921	$	477	$	116	$	418	$	109

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Business Segments (Tables)

3 Months Ended

Mar. 31, 2022

Segment Reporting Information [Line Items]

Business Segment Data

Business segment information is presented in the following tables. Segment assets presented exclude intercompany assets.

	Three Months Ended March 31, 2022
	Electric		Gas				Total
	Utilities and		Utilities and		Commercial		Reportable
(in millions)	Infrastructure		Infrastructure		Renewables		Segments		Other		Eliminations		Total
Unaffiliated revenues	$	5,995	$	1,009	$	121	$	7,125	$	7	$	—	$	7,132
Intersegment revenues	7		23		—		30		23		(53)		—
Total revenues	$	6,002	$	1,032	$	121	$	7,155	$	30	$	(53)	$	7,132
Segment income (loss)(a)	$	723	$	254	$	11	$	988	$	(170)	$	—	$	818
Less: Noncontrolling interests													37
Add: Preferred stock dividend													39
Net Income													$	820
Segment assets	$	144,790	$	15,170	$	7,021	$	166,981	$	4,251	$	(12)	$	171,220

	Three Months Ended March 31, 2021
	Electric		Gas				Total
	Utilities and		Utilities and		Commercial		Reportable
(in millions)	Infrastructure		Infrastructure		Renewables		Segments		Other		Eliminations		Total
Unaffiliated revenues	$	5,273	$	752	$	119	$	6,144	$	6	$	—	$	6,150
Intersegment revenues	8		23		—		31		20		(51)		—
Total revenues	$	5,281	$	775	$	119	$	6,175	$	26	$	(51)	$	6,150
Segment income (loss)(b)	$	820	$	245	$	27	$	1,092	$	(139)	$	—	$	953
Less: Noncontrolling interests													51
Add: Preferred stock dividend													39
Net Income													$	941

(a)Electric Utilities and Infrastructure includes $211 million recorded within Impairment of assets and other charges, $46 million within Operating revenues and $22 million within Noncontrolling Interests related to the Duke Energy Supreme Court ruling on the Condensed Consolidated Statements of Operations. See Note 3 for additional information.

(b)Commercial Renewables includes a $35 million loss related to Texas Storm Uri, of which $8 million is recorded within Nonregulated electric and other revenues, $2 million within Operation, maintenance and other, $29 million within Equity in earnings (losses) of unconsolidated affiliates and $12 million within Net Loss Attributable to Noncontrolling Interests on the Condensed Consolidated Statements of Operations. See Note 4 for additional information. Gas Utilities and Infrastructure includes $6 million, recorded within Equity in earnings (losses) of unconsolidated affiliates on the Condensed Consolidated Statements of Operations, related to gas pipeline investments.

Duke Energy Ohio

Segment Reporting Information [Line Items]

Business Segment Data

	Three Months Ended March 31, 2022
	Electric		Gas		Total
	Utilities and		Utilities and		Reportable
(in millions)	Infrastructure		Infrastructure		Segments		Other		Eliminations		Total
Total revenues	$	412	$	226	$	638	$	—	$	—	$	638
Segment income/Net (loss) income	$	41	$	38	$	79	$	(2)	$	—	$	77
Segment assets	$	7,101	$	3,784	$	10,885	$	14	$	(168)	$	10,731

	Three Months Ended March 31, 2021
	Electric		Gas		Total
	Utilities and		Utilities and		Reportable
(in millions)	Infrastructure		Infrastructure		Segments		Other		Total
Total revenues	$	363	$	169	$	532	$	—	$	532
Segment income/Net (loss) income	$	50	$	43	$	93	$	(2)	$	91

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Regulatory Matters (Tables)

3 Months Ended

Mar. 31, 2022

Regulated Operations [Abstract]

Schedule of Potential Plant Retirements

The table below contains the net carrying value of generating facilities planned for retirement or included in recent IRPs as evaluated for potential retirement. Dollar amounts in the table below are included in Net property, plant and equipment on the Condensed Consolidated Balance Sheets as of March 31, 2022, and exclude capitalized asset retirement costs.

		Remaining Net
	Capacity	Book Value
	(in MW)	(in millions)
Duke Energy Carolinas
Allen Steam Station Units 1(a)	167	$	12
Allen Steam Station Units 5(b)	259	265
Cliffside Unit 5(b)	546	358
Duke Energy Progress
Mayo Unit 1(b)	713	621
Roxboro Units 3-4(b)	1,409	450
Duke Energy Florida
Crystal River Units 4-5(c)	1,442	1,636
Duke Energy Indiana
Gibson Units 1-5(d)	2,845	2,076
Cayuga Units 1-2(d)	1,005	676
Total Duke Energy	8,386	$	6,094

(a)As part of the 2015 resolution of a lawsuit involving alleged New Source Review violations, Duke Energy Carolinas must retire Allen Steam Station Unit 1 by December 31, 2024. The long-term energy options considered in the IRP could result in retirement of this unit earlier than its current estimated useful live.

(b)These units were included in the IRP filed by Duke Energy Carolinas and Duke Energy Progress in North Carolina and South Carolina on September 1, 2020. The long-term energy options considered in the IRP could result in retirement of these units earlier than their current estimated useful lives.

(c)On January 14, 2021, Duke Energy Florida filed the 2021 Settlement agreement with the FPSC, which proposed depreciation rates reflecting retirement dates for Duke Energy Florida's last two coal-fired generating facilities, Crystal River Units 4-5, eight years ahead of schedule in 2034 rather than in 2042. The FPSC approved the 2021 Settlement on May 4, 2021.

(d)The rate case filed July 2, 2019, included proposed depreciation rates reflecting retirement dates from 2026 to 2038. The depreciation rates reflecting these updated retirement dates were approved by the IURC as part of the rate case order issued on June 29, 2020.

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Commitments and Contingencies (Tables)

3 Months Ended

Mar. 31, 2022

Commitments and Contingencies Disclosure [Abstract]

Schedule of Reserves

The following table contains information regarding reserves for probable and estimable costs related to the various environmental sites. These reserves are recorded in Other within Other Noncurrent Liabilities on the Condensed Consolidated Balance Sheets.

(in millions)	March 31, 2022		December 31, 2021
Reserves for Environmental Remediation
Duke Energy	$	87	$	88
Duke Energy Carolinas	19		19
Progress Energy	23		23
Duke Energy Progress	11		11
Duke Energy Florida	11		11
Duke Energy Ohio	33		34
Duke Energy Indiana	4		4
Piedmont	8		9

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Debt and Credit Facilities (Tables)

3 Months Ended

Mar. 31, 2022

Debt Disclosure [Abstract]

Schedule of Long-term Debt Instruments

The following table summarizes significant debt issuances (in millions).

				Three Months Ended March 31, 2022
						Duke		Duke
	Maturity	Interest		Duke		Energy		Energy
Issuance Date	Date	Rate		Energy		Carolinas		Progress
First Mortgage Bonds
March 2022(a)	March 2032	2.850	%	$	500	$	500	$	—
March 2022(a)	March 2052	3.550	%	650		650		—
March 2022(a)	April 2032	3.400	%	500		—		500
March 2022(a)	April 2052	4.000	%	400		—		400
Total issuances				$	2,050	$	1,150	$	900

(a)Proceeds will be used to finance or refinance, in whole or in part, existing or new eligible projects under the sustainable financing framework.

The following table shows the significant components of Current maturities of long-term debt on the Condensed Consolidated Balance Sheets. The Duke Energy Registrants currently anticipate satisfying these obligations with cash on hand and proceeds from additional borrowings.

(in millions)	Maturity Date	Interest Rate		March 31, 2022
Unsecured Debt
Progress Energy	April 2022	3.150	%	$	450
Duke Energy (Parent)	August 2022	3.050	%	500
Duke Energy (Parent)	August 2022	2.400	%	500
First Mortgage Bonds
Duke Energy Carolinas	May 2022	3.350	%	350
Duke Energy Progress	May 2022	2.800	%	500
Duke Energy Carolinas	March 2023	2.500	%	500
Duke Energy Carolinas	March 2023	3.050	%	500
Other(a)				584
Current maturities of long-term debt				$	3,884

(a)Includes finance lease obligations, amortizing debt, tax-exempt bonds with mandatory put options and small bullet maturities.

Schedule Of Line Of Credit Facilities

The table below includes the current borrowing sublimits and available capacity under these credit facilities.

	March 31, 2022
			Duke		Duke		Duke		Duke		Duke		Duke
	Duke		Energy		Energy		Energy		Energy		Energy		Energy
(in millions)	Energy		(Parent)		Carolinas		Progress		Florida		Ohio		Indiana		Piedmont
Facility size(a)	$	9,000	$	3,300	$	1,225	$	1,400	$	900	$	775	$	600	$	800
Reduction to backstop issuances
Commercial paper(b)	(2,819)		(1,715)		(300)		(150)		(236)		(86)		(150)		(182)
Outstanding letters of credit	(38)		(25)		(4)		(2)		(7)		—		—		—
Tax-exempt bonds	(81)		—		—		—		—		—		(81)		—
Available capacity under the Master Credit Facility	$	6,062	$	1,560	$	921	$	1,248	$	657	$	689	$	369	$	618

(a)Represents the sublimit of each borrower.

(b)Duke Energy issued $625 million of commercial paper and loaned the proceeds through the money pool to Duke Energy Carolinas, Duke Energy Progress, Duke Energy Ohio and Duke Energy Indiana. The balances are classified as Long-Term Debt Payable to Affiliated Companies on the Condensed Consolidated Balance Sheets.

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Goodwill (Tables)

3 Months Ended

Mar. 31, 2022

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill By Reportable Operating Segment

The following table presents the goodwill by reportable segment included on Duke Energy's Condensed Consolidated Balance Sheets at March 31, 2022, and December 31, 2021.

	Electric Utilities		Gas Utilities		Commercial
(in millions)	and Infrastructure		and Infrastructure		Renewables		Total
Goodwill balance	$	17,379	$	1,924	$	122	$	19,425
Accumulated impairment charges	—		—		(122)		(122)
Goodwill, adjusted for accumulated impairment charges	$	17,379	$	1,924	$	—	$	19,303

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Related Party Transactions (Tables)

3 Months Ended

Mar. 31, 2022

Related Party Transactions [Abstract]

Schedule of Related Party Transactions, Other Revenue and Expense

Material amounts related to transactions with related parties included on the Condensed Consolidated Statements of Operations and Comprehensive Income are presented in the following table.

	Three Months Ended March 31,
(in millions)	2022		2021
Duke Energy Carolinas
Corporate governance and shared service expenses(a)	$	206	$	203
Indemnification coverages(b)	7		6
Joint Dispatch Agreement (JDA) revenue(c)	26		13
JDA expense(c)	94		40
Intercompany natural gas purchases(d)	13		14
Progress Energy
Corporate governance and shared service expenses(a)	$	196	$	181
Indemnification coverages(b)	11		10
JDA revenue(c)	94		40
JDA expense(c)	26		13
Intercompany natural gas purchases(d)	19		19
Duke Energy Progress
Corporate governance and shared service expenses(a)	$	119	$	105
Indemnification coverages(b)	5		5
JDA revenue(c)	94		40
JDA expense(c)	26		13
Intercompany natural gas purchases(d)	19		19
Duke Energy Florida
Corporate governance and shared service expenses(a)	$	77	$	76
Indemnification coverages(b)	6		5
Duke Energy Ohio
Corporate governance and shared service expenses(a)	$	82	$	79
Indemnification coverages(b)	1		1
Duke Energy Indiana
Corporate governance and shared service expenses(a)	$	124	$	113
Indemnification coverages(b)	2		2
Piedmont
Corporate governance and shared service expenses(a)	$	35	$	33
Indemnification coverages(b)	1		1
Intercompany natural gas sales(d)	32		33
Natural gas storage and transportation costs(e)	6		6

(a)The Subsidiary Registrants are charged their proportionate share of corporate governance and other shared services costs, primarily related to human resources, employee benefits, information technology, legal and accounting fees, as well as other third-party costs. These amounts are primarily recorded in Operation, maintenance and other on the Condensed Consolidated Statements of Operations and Comprehensive Income.

(b)The Subsidiary Registrants incur expenses related to certain indemnification coverages through Bison, Duke Energy’s wholly owned captive insurance subsidiary. These expenses are recorded in Operation, maintenance and other on the Condensed Consolidated Statements of Operations and Comprehensive Income.

(c)Duke Energy Carolinas and Duke Energy Progress participate in a JDA, which allows the collective dispatch of power plants between the service territories to reduce customer rates. Revenues from the sale of power and expenses from the purchase of power pursuant to the JDA are recorded in Operating Revenues and Fuel used in electric generation and purchased power, respectively, on the Condensed Consolidated Statements of Operations and Comprehensive Income.

(d)Piedmont provides long-term natural gas delivery service to certain Duke Energy Carolinas and Duke Energy Progress natural gas-fired generation facilities. Piedmont records the sales in Operating revenues, and Duke Energy Carolinas and Duke Energy Progress record the related purchases as a component of Fuel used in electric generation and purchased power on their respective Condensed Consolidated Statements of Operations and Comprehensive Income.

(e)Piedmont has related party transactions as a customer of its equity method investments in Pine Needle LNG Company, LLC, Hardy Storage Company, LLC and Cardinal Pipeline Company, LLC natural gas storage and transportation facilities. These expenses are included in Cost of natural gas on Piedmont's Condensed Consolidated Statements of Operations and Comprehensive Income.The following table includes the balance of intercompany income tax receivables and payables for the Subsidiary Registrants.

	Duke				Duke		Duke		Duke		Duke
	Energy		Progress		Energy		Energy		Energy		Energy
(in millions)	Carolinas		Energy		Progress		Florida		Ohio		Indiana		Piedmont
March 31, 2022
Intercompany income tax receivable	$	20	$	49	$	—	$	9	$	5	$	—	$	—
Intercompany income tax payable	—		—		15		—		—		44		45
December 31, 2021
Intercompany income tax receivable	$	—	$	—	$	—	$	40	$	19	$	—	$	—
Intercompany income tax payable	62		—		84		—		—		10		27

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Derivatives and Hedging (Tables)

3 Months Ended

Mar. 31, 2022

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Notional Amounts of Outstanding Derivative Positions

The following table shows notional amounts of outstanding derivatives related to interest rate risk.

	March 31, 2022
			Duke		Duke		Duke
	Duke		Energy		Energy		Energy
(in millions)	Energy		Carolinas		Indiana		Ohio
Cash flow hedges	$	2,913	$	—	$	—	$	—
Undesignated contracts	577		250		300		27
Total notional amount(a)	$	3,490	$	250	$	300	$	27

	December 31, 2021
			Duke				Duke		Duke		Duke
	Duke		Energy		Progress		Energy		Energy		Energy
(in millions)	Energy		Carolinas		Energy		Progress		Indiana		Ohio
Cash flow hedges	$	2,415	$	—	$	—	$	—	$	—	$	—
Undesignated contracts	1,177		350		500		500		300		27
Total notional amount(a)	$	3,592	$	350	$	500	$	500	$	300	$	27

(a)Duke Energy includes amounts related to consolidated VIEs of $663 million and $665 million in cash flow hedges as of March 31, 2022 and December 31, 2021, respectively.

The tables below include volumes of outstanding commodity derivatives. Amounts disclosed represent the absolute value of notional volumes of commodity contracts excluding NPNS. The Duke Energy Registrants have netted contractual amounts where offsetting purchase and sale contracts exist with identical delivery locations and times of delivery. Where all commodity positions are perfectly offset, no quantities are shown.

	March 31, 2022
		Duke		Duke	Duke	Duke
	Duke	Energy	Progress	Energy	Energy	Energy
	Energy	Carolinas	Energy	Progress	Ohio	Indiana	Piedmont
Electricity (GWh)(a)	16,176	—	—	—	791	4,501	—
Natural gas (millions of dekatherms)	860	284	243	243	—	7	326

	December 31, 2021
		Duke		Duke	Duke	Duke
	Duke	Energy	Progress	Energy	Energy	Energy
	Energy	Carolinas	Energy	Progress	Ohio	Indiana	Piedmont
Electricity (GWh)(a)	22,344	—	—	—	1,681	10,688	—
Natural gas (millions of dekatherms)	823	264	215	215	—	8	336

(a)Duke Energy includes 9,763 GWh and 9,975 GWh related to cash flow hedges as of March 31, 2022, and December 31, 2021, respectively.

Location And Fair Value Of Derivatives Recognized in the Condensed Consolidated Balance Sheets

The following tables show the fair value and balance sheet location of derivative instruments. Although derivatives subject to master netting arrangements are netted on the Condensed Consolidated Balance Sheets, the fair values presented below are shown gross and cash collateral on the derivatives has not been netted against the fair values shown.

Derivative Assets	March 31, 2022
			Duke				Duke		Duke		Duke		Duke
	Duke		Energy		Progress		Energy		Energy		Energy		Energy
(in millions)	Energy		Carolinas		Energy		Progress		Florida		Ohio		Indiana		Piedmont
Commodity Contracts
Not Designated as Hedging Instruments
Current	$	673	$	335	$	295	$	255	$	40	$	—	$	28	$	7
Noncurrent	280		151		130		130		—		—		—		—
Total Derivative Assets – Commodity Contracts	$	953	$	486	$	425	$	385	$	40	$	—	$	28	$	7
Interest Rate Contracts
Designated as Hedging Instruments
Current	$	94	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Noncurrent	37		—		—		—		—		—		—		—
Not Designated as Hedging Instruments
Noncurrent	24		7		—		—		—		—		17		—
Total Derivative Assets – Interest Rate Contracts	$	155	$	7	$	—	$	—	$	—	$	—	$	17	$	—
Total Derivative Assets	$	1,108	$	493	$	425	$	385	$	40	$	—	$	45	$	7

Derivative Liabilities	March 31, 2022
			Duke				Duke		Duke		Duke		Duke
	Duke		Energy		Progress		Energy		Energy		Energy		Energy
(in millions)	Energy		Carolinas		Energy		Progress		Florida		Ohio		Indiana		Piedmont
Commodity Contracts
Designated as Hedging Instruments
Current	$	49	$	—	$	—	$	—	$	—	$	—	$	—	—
Noncurrent	160		—		—		—		—		—		—		—
Not Designated as Hedging Instruments
Current	61		36		—		—		—		—		—		24
Noncurrent	149		1		—		—		—		—		—		149
Total Derivative Liabilities – Commodity Contracts	$	419	$	37	$	—	$	—	$	—	$	—	$	—	$	173
Interest Rate Contracts
Designated as Hedging Instruments
Current	$	4	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Noncurrent	7		—		—		—		—		—		—		—
Not Designated as Hedging Instruments
Current	1		—		—		—		—		1		—		—
Noncurrent	2		—		—		—		—		2		—		—
Total Derivative Liabilities – Interest Rate Contracts	$	14	$	—	$	—	$	—	$	—	$	3	$	—	$	—
Total Derivative Liabilities	$	433	$	37	$	—	$	—	$	—	$	3	$	—	$	173

Derivative Assets	December 31, 2021
			Duke				Duke		Duke		Duke		Duke
	Duke		Energy		Progress		Energy		Energy		Energy		Energy
(in millions)	Energy		Carolinas		Energy		Progress		Florida		Ohio		Indiana		Piedmont
Commodity Contracts
Not Designated as Hedging Instruments
Current	$	199	$	99	$	72	$	72	$	—	$	2	$	23	$	3
Noncurrent	113		63		50		50		—		—		—		—
Total Derivative Assets – Commodity Contracts	$	312	$	162	$	122	$	122	$	—	$	2	$	23	$	3
Interest Rate Contracts
Designated as Hedging Instruments
Current	$	3	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Noncurrent	3		—		—		—		—		—		—		—
Not Designated as Hedging Instruments
Current	2		—		2		2		—		—		—		—
Total Derivative Assets – Interest Rate Contracts	$	8	$	—	$	2	$	2	$	—	$	—	$	—	$	—
Total Derivative Assets	$	320	$	162	$	124	$	124	$	—	$	2	$	23	$	3

Derivative Liabilities	December 31, 2021
			Duke				Duke		Duke		Duke		Duke
	Duke		Energy		Progress		Energy		Energy		Energy		Energy
(in millions)	Energy		Carolinas		Energy		Progress		Florida		Ohio		Indiana		Piedmont
Commodity Contracts
Designated as Hedging Instruments
Current	$	27	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Noncurrent	117		—		—		—		—		—		—		—
Not Designated as Hedging Instruments
Current	72		18		19		5		14		—		13		21
Noncurrent	132		9		5		5		—		—		—		118
Total Derivative Liabilities – Commodity Contracts	$	348	$	27	$	24	$	10	$	14	$	—	$	13	$	139
Interest Rate Contracts
Designated as Hedging Instruments
Current	$	75	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Noncurrent	21		—		—		—		—		—		—		—
Not Designated as Hedging Instruments
Current	10		8		—		—		—		1		—		—
Noncurrent	18		—		—		—		—		4		14		—
Total Derivative Liabilities – Interest Rate Contracts	$	124	$	8	$	—	$	—	$	—	$	5	$	14	$	—
Total Derivative Liabilities	$	472	$	35	$	24	$	10	$	14	$	5	$	27	$	139

Offsetting Assets

The following tables present the line items on the Condensed Consolidated Balance Sheets where derivatives are reported. Substantially all of Duke Energy's outstanding derivative contracts are subject to enforceable master netting arrangements. The gross amounts offset in the tables below show the effect of these netting arrangements on financial position, and include collateral posted to offset the net position. The amounts shown are calculated by counterparty. Accounts receivable or accounts payable may also be available to offset exposures in the event of bankruptcy. These amounts are not included in the tables below.

Derivative Assets	March 31, 2022
			Duke				Duke		Duke		Duke		Duke
	Duke		Energy		Progress		Energy		Energy		Energy		Energy
(in millions)	Energy		Carolinas		Energy		Progress		Florida		Ohio		Indiana		Piedmont
Current
Gross amounts recognized	$	767	$	335	$	295	$	255	$	40	$	—	$	28	$	7
Gross amounts offset	(255)		(149)		(106)		(106)		—		—		—		—
Net amounts presented in Current Assets: Other	$	512	$	186	$	189	$	149	$	40	$	—	$	28	$	7
Noncurrent
Gross amounts recognized	$	341	$	158	$	130	$	130	$	—	$	—	$	17	$	—
Gross amounts offset	(115)		(64)		(51)		(51)		—		—		—		—
Net amounts presented in Other Noncurrent Assets: Other	$	226	$	94	$	79	$	79	$	—	$	—	$	17	$	—

Derivative Liabilities	March 31, 2022
			Duke				Duke		Duke		Duke		Duke
	Duke		Energy		Progress		Energy		Energy		Energy		Energy
(in millions)	Energy		Carolinas		Energy		Progress		Florida		Ohio		Indiana		Piedmont
Current
Gross amounts recognized	$	115	$	36	$	—	$	—	$	—	$	1	$	—	$	24
Gross amounts offset	—		—		—		—		—		—		—		—
Net amounts presented in Current Liabilities: Other	$	115	$	36	$	—	$	—	$	—	$	1	$	—	$	24
Noncurrent
Gross amounts recognized	$	318	$	1	$	—	$	—	$	—	$	2	$	—	$	149
Gross amounts offset	—		—		—		—		—		—		—		—
Net amounts presented in Other Noncurrent Liabilities: Other	$	318	$	1	$	—	$	—	$	—	$	2	$	—	$	149

Derivative Assets	December 31, 2021
			Duke				Duke		Duke		Duke		Duke
	Duke		Energy		Progress		Energy		Energy		Energy		Energy
(in millions)	Energy		Carolinas		Energy		Progress		Florida		Ohio		Indiana		Piedmont
Current
Gross amounts recognized	$	204	$	99	$	74	$	74	$	—	$	2	$	23	$	3
Gross amounts offset	(25)		(16)		(9)		(9)		—		—		—		—
Net amounts presented in Current Assets: Other	$	179	$	83	$	65	$	65	$	—	$	2	$	23	$	3
Noncurrent
Gross amounts recognized	$	116	$	63	$	50	$	50	$	—	$	—	$	—	$	—
Gross amounts offset	(23)		(15)		(8)		(8)		—		—		—		—
Net amounts presented in Other Noncurrent Assets: Other	$	93	$	48	$	42	$	42	$	—	$	—	$	—	$	—

Derivative Liabilities	December 31, 2021
			Duke				Duke		Duke		Duke		Duke
	Duke		Energy		Progress		Energy		Energy		Energy		Energy
(in millions)	Energy		Carolinas		Energy		Progress		Florida		Ohio		Indiana		Piedmont
Current
Gross amounts recognized	$	184	$	26	$	19	$	5	$	14	$	1	$	13	$	21
Gross amounts offset	(11)		(6)		(5)		(5)		—		—		—		—
Net amounts presented in Current Liabilities: Other	$	173	$	20	$	14	$	—	$	14	$	1	$	13	$	21
Noncurrent
Gross amounts recognized	$	288	$	9	$	5	$	5	$	—	$	4	$	14	$	118
Gross amounts offset	(12)		(8)		(5)		(5)		—		—		—		—
Net amounts presented in Other Noncurrent Liabilities: Other	$	276	$	1	$	—	$	—	$	—	$	4	$	14	$	118

Offsetting Liabilities

The following tables present the line items on the Condensed Consolidated Balance Sheets where derivatives are reported. Substantially all of Duke Energy's outstanding derivative contracts are subject to enforceable master netting arrangements. The gross amounts offset in the tables below show the effect of these netting arrangements on financial position, and include collateral posted to offset the net position. The amounts shown are calculated by counterparty. Accounts receivable or accounts payable may also be available to offset exposures in the event of bankruptcy. These amounts are not included in the tables below.

Derivative Assets	March 31, 2022
			Duke				Duke		Duke		Duke		Duke
	Duke		Energy		Progress		Energy		Energy		Energy		Energy
(in millions)	Energy		Carolinas		Energy		Progress		Florida		Ohio		Indiana		Piedmont
Current
Gross amounts recognized	$	767	$	335	$	295	$	255	$	40	$	—	$	28	$	7
Gross amounts offset	(255)		(149)		(106)		(106)		—		—		—		—
Net amounts presented in Current Assets: Other	$	512	$	186	$	189	$	149	$	40	$	—	$	28	$	7
Noncurrent
Gross amounts recognized	$	341	$	158	$	130	$	130	$	—	$	—	$	17	$	—
Gross amounts offset	(115)		(64)		(51)		(51)		—		—		—		—
Net amounts presented in Other Noncurrent Assets: Other	$	226	$	94	$	79	$	79	$	—	$	—	$	17	$	—

Derivative Liabilities	March 31, 2022
			Duke				Duke		Duke		Duke		Duke
	Duke		Energy		Progress		Energy		Energy		Energy		Energy
(in millions)	Energy		Carolinas		Energy		Progress		Florida		Ohio		Indiana		Piedmont
Current
Gross amounts recognized	$	115	$	36	$	—	$	—	$	—	$	1	$	—	$	24
Gross amounts offset	—		—		—		—		—		—		—		—
Net amounts presented in Current Liabilities: Other	$	115	$	36	$	—	$	—	$	—	$	1	$	—	$	24
Noncurrent
Gross amounts recognized	$	318	$	1	$	—	$	—	$	—	$	2	$	—	$	149
Gross amounts offset	—		—		—		—		—		—		—		—
Net amounts presented in Other Noncurrent Liabilities: Other	$	318	$	1	$	—	$	—	$	—	$	2	$	—	$	149

Derivative Assets	December 31, 2021
			Duke				Duke		Duke		Duke		Duke
	Duke		Energy		Progress		Energy		Energy		Energy		Energy
(in millions)	Energy		Carolinas		Energy		Progress		Florida		Ohio		Indiana		Piedmont
Current
Gross amounts recognized	$	204	$	99	$	74	$	74	$	—	$	2	$	23	$	3
Gross amounts offset	(25)		(16)		(9)		(9)		—		—		—		—
Net amounts presented in Current Assets: Other	$	179	$	83	$	65	$	65	$	—	$	2	$	23	$	3
Noncurrent
Gross amounts recognized	$	116	$	63	$	50	$	50	$	—	$	—	$	—	$	—
Gross amounts offset	(23)		(15)		(8)		(8)		—		—		—		—
Net amounts presented in Other Noncurrent Assets: Other	$	93	$	48	$	42	$	42	$	—	$	—	$	—	$	—

Derivative Liabilities	December 31, 2021
			Duke				Duke		Duke		Duke		Duke
	Duke		Energy		Progress		Energy		Energy		Energy		Energy
(in millions)	Energy		Carolinas		Energy		Progress		Florida		Ohio		Indiana		Piedmont
Current
Gross amounts recognized	$	184	$	26	$	19	$	5	$	14	$	1	$	13	$	21
Gross amounts offset	(11)		(6)		(5)		(5)		—		—		—		—
Net amounts presented in Current Liabilities: Other	$	173	$	20	$	14	$	—	$	14	$	1	$	13	$	21
Noncurrent
Gross amounts recognized	$	288	$	9	$	5	$	5	$	—	$	4	$	14	$	118
Gross amounts offset	(12)		(8)		(5)		(5)		—		—		—		—
Net amounts presented in Other Noncurrent Liabilities: Other	$	276	$	1	$	—	$	—	$	—	$	4	$	14	$	118

XML

Investments in Debt and Equity Securities (Tables)

3 Months Ended

Mar. 31, 2022

Debt Securities, Available-for-sale [Line Items]

Debt Securities, Trading, and Equity Securities, FV-NI

The following table presents the estimated fair value of investments in debt and equity securities; equity investments are classified as FV-NI and debt investments are classified as AFS.

	March 31, 2022						December 31, 2021
	Gross		Gross				Gross		Gross
	Unrealized		Unrealized		Estimated		Unrealized		Unrealized		Estimated
	Holding		Holding		Fair		Holding		Holding		Fair
(in millions)	Gains		Losses		Value		Gains		Losses		Value
NDTF
Cash and cash equivalents	$	—	$	—	$	128	$	—	$	—	$	160
Equity securities	4,486		62		6,853		4,905		43		7,350
Corporate debt securities	9		43		786		39		6		829
Municipal bonds	2		16		321		14		1		314
U.S. government bonds	10		57		1,561		31		12		1,568
Other debt securities	—		7		177		3		1		180
Total NDTF Investments	$	4,507	$	185	$	9,826	$	4,992	$	63	$	10,401
Other Investments
Cash and cash equivalents	$	—	$	—	$	110	$	—	$	—	$	36
Equity securities	31		4		147		36		—		156
Corporate debt securities	—		7		124		2		1		119
Municipal bonds	1		2		83		3		1		80
U.S. government bonds	—		2		45		—		—		56
Other debt securities	—		2		36		—		1		45
Total Other Investments	$	32	$	17	$	545	$	41	$	3	$	492
Total Investments	$	4,539	$	202	$	10,371	$	5,033	$	66	$	10,893

Debt Securities, Available-for-sale

The following table presents the estimated fair value of investments in debt and equity securities; equity investments are classified as FV-NI and debt investments are classified as AFS.

	March 31, 2022						December 31, 2021
	Gross		Gross				Gross		Gross
	Unrealized		Unrealized		Estimated		Unrealized		Unrealized		Estimated
	Holding		Holding		Fair		Holding		Holding		Fair
(in millions)	Gains		Losses		Value		Gains		Losses		Value
NDTF
Cash and cash equivalents	$	—	$	—	$	128	$	—	$	—	$	160
Equity securities	4,486		62		6,853		4,905		43		7,350
Corporate debt securities	9		43		786		39		6		829
Municipal bonds	2		16		321		14		1		314
U.S. government bonds	10		57		1,561		31		12		1,568
Other debt securities	—		7		177		3		1		180
Total NDTF Investments	$	4,507	$	185	$	9,826	$	4,992	$	63	$	10,401
Other Investments
Cash and cash equivalents	$	—	$	—	$	110	$	—	$	—	$	36
Equity securities	31		4		147		36		—		156
Corporate debt securities	—		7		124		2		1		119
Municipal bonds	1		2		83		3		1		80
U.S. government bonds	—		2		45		—		—		56
Other debt securities	—		2		36		—		1		45
Total Other Investments	$	32	$	17	$	545	$	41	$	3	$	492
Total Investments	$	4,539	$	202	$	10,371	$	5,033	$	66	$	10,893

Schedule of Realized Gain (Loss)

Realized gains and losses, which were determined on a specific identification basis, from sales of FV-NI and AFS securities for the three months ended March 31, 2022, and 2021, were as follows.

	Three Months Ended
(in millions)	March 31, 2022		March 31, 2021
FV-NI:
Realized gains	$	111	$	140
Realized losses	85		23
AFS:
Realized gains	4		18
Realized losses	23		13

Investments Classified by Contractual Maturity Date

The table below summarizes the maturity date for debt securities.

	March 31, 2022
			Duke				Duke		Duke		Duke
	Duke		Energy		Progress		Energy		Energy		Energy
(in millions)	Energy		Carolinas		Energy		Progress		Florida		Indiana
Due in one year or less	$	162	$	7	$	139	$	32	$	107	$	8
Due after one through five years	969		367		528		270		258		24
Due after five through 10 years	536		235		228		212		16		6
Due after 10 years	1,466		810		557		517		40		25
Total	$	3,133	$	1,419	$	1,452	$	1,031	$	421	$	63

Duke Energy Carolinas

Debt Securities, Available-for-sale [Line Items]

Debt Securities, Trading, and Equity Securities, FV-NI

The following table presents the estimated fair value of investments in debt and equity securities; equity investments are classified as FV-NI and debt investments are classified as AFS.

	March 31, 2022						December 31, 2021
	Gross		Gross				Gross		Gross
	Unrealized		Unrealized		Estimated		Unrealized		Unrealized		Estimated
	Holding		Holding		Fair		Holding		Holding		Fair
(in millions)	Gains		Losses		Value		Gains		Losses		Value
NDTF
Cash and cash equivalents	$	—	$	—	$	60	$	—	$	—	$	53
Equity securities	2,632		30		3,962		2,887		19		4,265
Corporate debt securities	6		30		503		24		4		506
Municipal bonds	—		5		52		2		—		48
U.S. government bonds	4		21		692		16		3		712
Other debt securities	—		7		172		3		1		175
Total NDTF Investments	$	2,642	$	93	$	5,441	$	2,932	$	27	$	5,759

Debt Securities, Available-for-sale

The following table presents the estimated fair value of investments in debt and equity securities; equity investments are classified as FV-NI and debt investments are classified as AFS.

	March 31, 2022						December 31, 2021
	Gross		Gross				Gross		Gross
	Unrealized		Unrealized		Estimated		Unrealized		Unrealized		Estimated
	Holding		Holding		Fair		Holding		Holding		Fair
(in millions)	Gains		Losses		Value		Gains		Losses		Value
NDTF
Cash and cash equivalents	$	—	$	—	$	60	$	—	$	—	$	53
Equity securities	2,632		30		3,962		2,887		19		4,265
Corporate debt securities	6		30		503		24		4		506
Municipal bonds	—		5		52		2		—		48
U.S. government bonds	4		21		692		16		3		712
Other debt securities	—		7		172		3		1		175
Total NDTF Investments	$	2,642	$	93	$	5,441	$	2,932	$	27	$	5,759

Schedule of Realized Gain (Loss)

Realized gains and losses, which were determined on a specific identification basis, from sales of FV-NI and AFS securities for the three months ended March 31, 2022, and 2021, were as follows.

	Three Months Ended
(in millions)	March 31, 2022		March 31, 2021
FV-NI:
Realized gains	$	75	$	128
Realized losses	49		16
AFS:
Realized gains	3		13
Realized losses	16		9

Progress Energy

Debt Securities, Available-for-sale [Line Items]

Debt Securities, Trading, and Equity Securities, FV-NI

The following table presents the estimated fair value of investments in debt and equity securities; equity investments are classified as FV-NI and debt investments are classified as AFS.

	March 31, 2022						December 31, 2021
	Gross		Gross				Gross		Gross
	Unrealized		Unrealized		Estimated		Unrealized		Unrealized		Estimated
	Holding		Holding		Fair		Holding		Holding		Fair
(in millions)	Gains		Losses		Value		Gains		Losses		Value
NDTF
Cash and cash equivalents	$	—	$	—	$	68	$	—	$	—	$	107
Equity securities	1,854		32		2,891		2,018		24		3,085
Corporate debt securities	3		13		283		15		2		323
Municipal bonds	2		11		269		12		1		266
U.S. government bonds	6		36		869		15		9		856
Other debt securities	—		—		5		—		—		5
Total NDTF Investments	$	1,865	$	92	$	4,385	$	2,060	$	36	$	4,642
Other Investments
Cash and cash equivalents	$	—	$	—	$	17	$	—	$	—	$	20
Municipal bonds	1		—		26		2		—		26
Total Other Investments	$	1	$	—	$	43	$	2	$	—	$	46
Total Investments	$	1,866	$	92	$	4,428	$	2,062	$	36	$	4,688

Debt Securities, Available-for-sale

The following table presents the estimated fair value of investments in debt and equity securities; equity investments are classified as FV-NI and debt investments are classified as AFS.

	March 31, 2022						December 31, 2021
	Gross		Gross				Gross		Gross
	Unrealized		Unrealized		Estimated		Unrealized		Unrealized		Estimated
	Holding		Holding		Fair		Holding		Holding		Fair
(in millions)	Gains		Losses		Value		Gains		Losses		Value
NDTF
Cash and cash equivalents	$	—	$	—	$	68	$	—	$	—	$	107
Equity securities	1,854		32		2,891		2,018		24		3,085
Corporate debt securities	3		13		283		15		2		323
Municipal bonds	2		11		269		12		1		266
U.S. government bonds	6		36		869		15		9		856
Other debt securities	—		—		5		—		—		5
Total NDTF Investments	$	1,865	$	92	$	4,385	$	2,060	$	36	$	4,642
Other Investments
Cash and cash equivalents	$	—	$	—	$	17	$	—	$	—	$	20
Municipal bonds	1		—		26		2		—		26
Total Other Investments	$	1	$	—	$	43	$	2	$	—	$	46
Total Investments	$	1,866	$	92	$	4,428	$	2,062	$	36	$	4,688

Schedule of Realized Gain (Loss)

Realized gains and losses, which were determined on a specific identification basis, from sales of FV-NI and AFS securities for the three months ended March 31, 2022, and 2021, were as follows.

	Three Months Ended
(in millions)	March 31, 2022		March 31, 2021
FV-NI:
Realized gains	$	36	$	12
Realized losses	36		7
AFS:
Realized gains	1		4
Realized losses	6		3

Duke Energy Progress

Debt Securities, Available-for-sale [Line Items]

Debt Securities, Trading, and Equity Securities, FV-NI

The following table presents the estimated fair value of investments in debt and equity securities; equity investments are classified as FV-NI and debt investments are classified as AFS.

	March 31, 2022						December 31, 2021
	Gross		Gross				Gross		Gross
	Unrealized		Unrealized		Estimated		Unrealized		Unrealized		Estimated
	Holding		Holding		Fair		Holding		Holding		Fair
(in millions)	Gains		Losses		Value		Gains		Losses		Value
NDTF
Cash and cash equivalents	$	—	$	—	$	58	$	—	$	—	$	94
Equity securities	1,757		32		2,782		1,915		23		2,970
Corporate debt securities	3		12		255		15		2		282
Municipal bonds	2		11		269		12		1		266
U.S. government bonds	6		19		502		15		3		472
Other debt securities	—		—		5		—		—		5
Total NDTF Investments	$	1,768	$	74	$	3,871	$	1,957	$	29	$	4,089
Other Investments
Cash and cash equivalents	$	—	$	—	$	14	$	—	$	—	$	16
Total Other Investments	$	—	$	—	$	14	$	—	$	—	$	16
Total Investments	$	1,768	$	74	$	3,885	$	1,957	$	29	$	4,105

Debt Securities, Available-for-sale

The following table presents the estimated fair value of investments in debt and equity securities; equity investments are classified as FV-NI and debt investments are classified as AFS.

	March 31, 2022						December 31, 2021
	Gross		Gross				Gross		Gross
	Unrealized		Unrealized		Estimated		Unrealized		Unrealized		Estimated
	Holding		Holding		Fair		Holding		Holding		Fair
(in millions)	Gains		Losses		Value		Gains		Losses		Value
NDTF
Cash and cash equivalents	$	—	$	—	$	58	$	—	$	—	$	94
Equity securities	1,757		32		2,782		1,915		23		2,970
Corporate debt securities	3		12		255		15		2		282
Municipal bonds	2		11		269		12		1		266
U.S. government bonds	6		19		502		15		3		472
Other debt securities	—		—		5		—		—		5
Total NDTF Investments	$	1,768	$	74	$	3,871	$	1,957	$	29	$	4,089
Other Investments
Cash and cash equivalents	$	—	$	—	$	14	$	—	$	—	$	16
Total Other Investments	$	—	$	—	$	14	$	—	$	—	$	16
Total Investments	$	1,768	$	74	$	3,885	$	1,957	$	29	$	4,105

Schedule of Realized Gain (Loss)

Realized gains and losses, which were determined on a specific identification basis, from sales of FV-NI and AFS securities for the three months ended March 31, 2022, and 2021, were as follows.

	Three Months Ended
(in millions)	March 31, 2022		March 31, 2021
FV-NI:
Realized gains	$	36	$	12
Realized losses	35		7
AFS:
Realized gains	1		4
Realized losses	5		3

Duke Energy Florida

Debt Securities, Available-for-sale [Line Items]

Debt Securities, Trading, and Equity Securities, FV-NI

The following table presents the estimated fair value of investments in debt and equity securities; equity investments are classified as FV-NI and debt investments are classified as AFS.

	March 31, 2022						December 31, 2021
	Gross		Gross				Gross		Gross
	Unrealized		Unrealized		Estimated		Unrealized		Unrealized		Estimated
	Holding		Holding		Fair		Holding		Holding		Fair
(in millions)	Gains		Losses		Value		Gains		Losses		Value
NDTF
Cash and cash equivalents	$	—	$	—	$	10	$	—	$	—	$	13
Equity securities	97		—		109		103		1		115
Corporate debt securities	—		1		28		—		—		41
U.S. government bonds	—		17		367		—		6		384
Total NDTF Investments(a)	$	97	$	18	$	514	$	103	$	7	$	553
Other Investments
Cash and cash equivalents	$	—	$	—	$	2	$	—	$	—	$	3
Municipal bonds	1		—		26		2		—		26
Total Other Investments	$	1	$	—	$	28	$	2	$	—	$	29
Total Investments	$	98	$	18	$	542	$	105	$	7	$	582

(a)During the three months ended March 31, 2022, and the year ended December 31, 2021, Duke Energy Florida received reimbursements from the NDTF for costs related to ongoing decommissioning activity of Crystal River Unit 3.

Debt Securities, Available-for-sale

The following table presents the estimated fair value of investments in debt and equity securities; equity investments are classified as FV-NI and debt investments are classified as AFS.

	March 31, 2022						December 31, 2021
	Gross		Gross				Gross		Gross
	Unrealized		Unrealized		Estimated		Unrealized		Unrealized		Estimated
	Holding		Holding		Fair		Holding		Holding		Fair
(in millions)	Gains		Losses		Value		Gains		Losses		Value
NDTF
Cash and cash equivalents	$	—	$	—	$	10	$	—	$	—	$	13
Equity securities	97		—		109		103		1		115
Corporate debt securities	—		1		28		—		—		41
U.S. government bonds	—		17		367		—		6		384
Total NDTF Investments(a)	$	97	$	18	$	514	$	103	$	7	$	553
Other Investments
Cash and cash equivalents	$	—	$	—	$	2	$	—	$	—	$	3
Municipal bonds	1		—		26		2		—		26
Total Other Investments	$	1	$	—	$	28	$	2	$	—	$	29
Total Investments	$	98	$	18	$	542	$	105	$	7	$	582

(a)During the three months ended March 31, 2022, and the year ended December 31, 2021, Duke Energy Florida received reimbursements from the NDTF for costs related to ongoing decommissioning activity of Crystal River Unit 3.

Duke Energy Indiana

Debt Securities, Available-for-sale [Line Items]

Debt Securities, Trading, and Equity Securities, FV-NI

The following table presents the estimated fair value of investments in debt and equity securities; equity investments are measured at FV-NI and debt investments are classified as AFS.

	March 31, 2022						December 31, 2021
	Gross		Gross				Gross		Gross
	Unrealized		Unrealized		Estimated		Unrealized		Unrealized		Estimated
	Holding		Holding		Fair		Holding		Holding		Fair
(in millions)	Gains		Losses		Value		Gains		Losses		Value
Investments
Cash and cash equivalents	$	—	$	—	$	1	$	—	$	—	$	—
Equity securities	4		4		91		6		—		97
Corporate debt securities	—		—		8		—		—		6
Municipal bonds	—		2		49		1		1		46
U.S. government bonds	—		—		6		—		—		12
Total Investments	$	4	$	6	$	155	$	7	$	1	$	161

Debt Securities, Available-for-sale

The following table presents the estimated fair value of investments in debt and equity securities; equity investments are measured at FV-NI and debt investments are classified as AFS.

	March 31, 2022						December 31, 2021
	Gross		Gross				Gross		Gross
	Unrealized		Unrealized		Estimated		Unrealized		Unrealized		Estimated
	Holding		Holding		Fair		Holding		Holding		Fair
(in millions)	Gains		Losses		Value		Gains		Losses		Value
Investments
Cash and cash equivalents	$	—	$	—	$	1	$	—	$	—	$	—
Equity securities	4		4		91		6		—		97
Corporate debt securities	—		—		8		—		—		6
Municipal bonds	—		2		49		1		1		46
U.S. government bonds	—		—		6		—		—		12
Total Investments	$	4	$	6	$	155	$	7	$	1	$	161

XML

Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2022

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

Fair Value Measurement Amounts For Assets And Liabilities

The following tables provide recorded balances for assets and liabilities measured at fair value on a recurring basis on the Condensed Consolidated Balance Sheets. Derivative amounts in the tables below for all Duke Energy Registrants exclude cash collateral, which is disclosed in Note 8. See Note 9 for additional information related to investments by major security type for the Duke Energy Registrants.

	March 31, 2022
(in millions)	Total Fair Value		Level 1		Level 2		Level 3		Not Categorized
NDTF cash and cash equivalents	$	128	$	128	$	—	$	—	$	—
NDTF equity securities	6,853		6,806		—		—		47
NDTF debt securities	2,845		947		1,898		—		—
Other equity securities	147		147		—		—		—
Other debt securities	288		39		249		—		—
Other cash and cash equivalents	110		110		—		—		—
Derivative assets	1,108		27		1,071		10		—
Total assets	11,479		8,204		3,218		10		47
Derivative liabilities	(433)		—		(224)		(209)		—
Net assets (liabilities)	$	11,046	$	8,204	$	2,994	$	(199)	$	47

	December 31, 2021
(in millions)	Total Fair Value		Level 1		Level 2		Level 3		Not Categorized
NDTF cash and cash equivalents	$	160	$	160	$	—	$	—	$	—
NDTF equity securities	7,350		7,300		—		—		50
NDTF debt securities	2,891		967		1,924		—		—
Other equity securities	156		156		—		—		—
Other debt securities	300		45		255		—		—
Other cash and cash equivalents	36		36		—		—		—
Derivative assets	320		3		293		24		—
Total assets	11,213		8,667		2,472		24		50
Derivative liabilities	(472)		(13)		(314)		(145)		—
Net assets (liabilities)	$	10,741	$	8,654	$	2,158	$	(121)	$	50

Reconciliation Of Assets And Liabilities Measured At Fair Value On A Recurring Basis Using Unobservable Inputs

The following tables provide reconciliations of beginning and ending balances of assets and liabilities measured at fair value using Level 3 measurements.

	Derivatives (net)
	Three Months Ended March 31,
(in millions)	2022		2021
Balance at beginning of period	$	(121)	$	(77)
Total pretax realized or unrealized losses included in comprehensive income	(68)		(44)
Purchases, sales, issuances and settlements:
Settlements	(3)		(7)
Total (losses) gains included on the Condensed Consolidated Balance Sheet	(7)		2
Balance at end of period	$	(199)	$	(126)

Quantitative Information Table - Level 3

The following tables include quantitative information about the Duke Energy Registrants' derivatives classified as Level 3.

	March 31, 2022
										Weighted
	Fair Value									Average
Investment Type	(in millions)		Valuation Technique	Unobservable Input	Range					Range
Duke Energy
Electricity contracts	$	(210)	RTO forward pricing	Forward electricity curves – price per MWh	$	20.33	-	$	187.82	$	46.51
Duke Energy Ohio
FTRs	1		RTO auction pricing	FTR price – per MWh	0.16		-	1.26		0.63
Duke Energy Indiana
FTRs	10		RTO auction pricing	FTR price – per MWh	(0.46)		-	17.24		2.32
Duke Energy
Total Level 3 derivatives	$	(199)

	December 31, 2021
									Weighted
	Fair Value								Average
Investment Type	(in millions)		Valuation Technique	Unobservable Input	Range				Range
Duke Energy
Electricity contracts	$	(145)	RTO forward pricing	Forward electricity curves – price per MWh	$	19.04	-	$139.11	$37.57
Duke Energy Ohio
FTRs	2		RTO auction pricing	FTR price – per MWh	0.06		-	1.79	0.96
Duke Energy Indiana
FTRs	22		RTO auction pricing	FTR price – per MWh	(1.18)		-	13.11	2.68
Duke Energy
Total Level 3 derivatives	$	(121)

Schedule Of Long Term Debt Fair Value

The fair value and book value of long-term debt, including current maturities, is summarized in the following table. Estimates determined are not necessarily indicative of amounts that could have been settled in current markets. Fair value of long-term debt uses Level 2 measurements.

	March 31, 2022				December 31, 2021
(in millions)	Book Value		Fair Value		Book Value		Fair Value
Duke Energy(a)	$	66,080	$	66,633	$	63,835	$	69,683
Duke Energy Carolinas	14,470		15,117		13,275		15,101
Progress Energy	21,657		22,669		20,823		23,751
Duke Energy Progress	11,114		11,260		10,249		11,252
Duke Energy Florida	8,451		8,911		8,482		9,772
Duke Energy Ohio	3,193		3,278		3,193		3,570
Duke Energy Indiana	4,270		4,554		4,323		5,067
Piedmont	2,969		2,984		2,968		3,278

(a)Book value of long-term debt includes $1.2 billion and $1.25 billion at March 31, 2022, and December 31, 2021, respectively, of net unamortized debt discount and premium of purchase accounting adjustments related to the mergers with Progress Energy and Piedmont that are excluded from fair value of long-term debt.

Duke Energy Carolinas

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

Fair Value Measurement Amounts For Assets And Liabilities

The following tables provide recorded balances for assets and liabilities measured at fair value on a recurring basis on the Condensed Consolidated Balance Sheets.

	March 31, 2022
(in millions)	Total Fair Value		Level 1		Level 2		Not Categorized
NDTF cash and cash equivalents	$	60	$	60	$	—	$	—
NDTF equity securities	3,962		3,915		—		47
NDTF debt securities	1,419		349		1,070		—
Derivative assets	493		—		493		—
Total assets	5,934		4,324		1,563		47
Derivative liabilities	(37)		—		(37)		—
Net assets	$	5,897	$	4,324	$	1,526	$	47

	December 31, 2021
(in millions)	Total Fair Value		Level 1		Level 2		Not Categorized
NDTF cash and cash equivalents	$	53	$	53	$	—	$	—
NDTF equity securities	4,265		4,215		—		50
NDTF debt securities	1,441		339		1,102		—
Derivative assets	162		—		162		—
Total assets	5,921		4,607		1,264		50
Derivative liabilities	(35)		—		(35)		—
Net assets	$	5,886	$	4,607	$	1,229	$	50

Progress Energy

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

Fair Value Measurement Amounts For Assets And Liabilities

The following tables provide recorded balances for assets and liabilities measured at fair value on a recurring basis on the Condensed Consolidated Balance Sheets.

	March 31, 2022						December 31, 2021
(in millions)	Total Fair Value		Level 1		Level 2		Total Fair Value		Level 1		Level 2
NDTF cash and cash equivalents	$	68	$	68	$	—	$	107	$	107	$	—
NDTF equity securities	2,891		2,891		—		3,085		3,085		—
NDTF debt securities	1,426		598		828		1,450		628		822
Other debt securities	26		—		26		26		—		26
Other cash and cash equivalents	17		17		—		20		20		—
Derivative assets	425		2		423		124		—		124
Total assets	4,853		3,576		1,277		4,812		3,840		972
Derivative liabilities	—		—		—		(24)		—		(24)
Net assets	$	4,853	$	3,576	$	1,277	$	4,788	$	3,840	$	948

Duke Energy Progress

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

Fair Value Measurement Amounts For Assets And Liabilities

The following tables provide recorded balances for assets and liabilities measured at fair value on a recurring basis on the Condensed Consolidated Balance Sheets.

	March 31, 2022						December 31, 2021
(in millions)	Total Fair Value		Level 1		Level 2		Total Fair Value		Level 1		Level 2
NDTF cash and cash equivalents	$	58	$	58	$	—	$	94	$	94	$	—
NDTF equity securities	2,782		2,782		—		2,970		2,970		—
NDTF debt securities	1,031		279		752		1,025		289		736
Other cash and cash equivalents	14		14		—		16		16		—
Derivative assets	385		2		383		124		—		124
Total assets	4,270		3,135		1,135		4,229		3,369		860
Derivative liabilities	—		—		—		(10)		—		(10)
Net assets	$	4,270	$	3,135	$	1,135	$	4,219	$	3,369	$	850

Duke Energy Florida

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

Fair Value Measurement Amounts For Assets And Liabilities

The following tables provide recorded balances for assets and liabilities measured at fair value on a recurring basis on the Condensed Consolidated Balance Sheets.

	March 31, 2022						December 31, 2021
(in millions)	Total Fair Value		Level 1		Level 2		Total Fair Value		Level 1		Level 2
NDTF cash and cash equivalents	$	10	$	10	$	—	$	13	$	13	$	—
NDTF equity securities	109		109		—		115		115		—
NDTF debt securities	395		319		76		425		339		86
Other debt securities	26		—		26		26		—		26
Other cash and cash equivalents	2		2		—		3		3		—
Derivative assets	40		—		40		—		—		—
Total assets	582		440		142		582		470		112
Derivative liabilities	—		—		—		(14)		—		(14)
Net assets	$	582	$	440	$	142	$	568	$	470	$	98

Duke Energy Indiana

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

Fair Value Measurement Amounts For Assets And Liabilities

The following tables provide recorded balances for assets and liabilities measured at fair value on a recurring basis on the Condensed Consolidated Balance Sheets.

	March 31, 2022								December 31, 2021
(in millions)	Total Fair Value		Level 1		Level 2		Level 3		Total Fair Value		Level 1		Level 2		Level 3
Other equity securities	$	91	$	91	$	—	$	—	$	97	$	97	$	—	$	—
Other debt securities	63		—		63		—		64		—		64		—
Other cash and cash equivalents	1		1		—		—		—		—		—		—
Derivative assets	45		18		17		10		23		1		—		22
Total assets	200		110		80		10		184		98		64		22
Derivative liabilities	—		—		—		—		(27)		(13)		(14)		—
Net assets	$	200	$	110	$	80	$	10	$	157	$	85	$	50	$	22

Reconciliation Of Assets And Liabilities Measured At Fair Value On A Recurring Basis Using Unobservable Inputs

The following table provides a reconciliation of beginning and ending balances of assets and liabilities measured at fair value using Level 3 measurements.

	Derivatives (net)
	Three Months Ended March 31,
(in millions)	2022		2021
Balance at beginning of period	$	22	$	6
Purchases, sales, issuances and settlements:
Settlements	(6)		(6)
Total (losses) gains included on the Condensed Consolidated Balance Sheet	(6)		2
Balance at end of period	$	10	$	2

Piedmont

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

Fair Value Measurement Amounts For Assets And Liabilities

The following tables provide recorded balances for assets and liabilities measured at fair value on a recurring basis on the Condensed Consolidated Balance Sheets.

	March 31, 2022						December 31, 2021
(in millions)	Total Fair Value		Level 1		Level 2		Total Fair Value		Level 1		Level 2
Derivative assets	$	7	$	7	$	—	$	3	$	3	$	—
Derivative liabilities	(173)		—		(173)		(139)		—		(139)
Net (liabilities) assets	$	(166)	$	7	$	(173)	$	(136)	$	3	$	(139)

XML

Variable Interest Entities (Tables)

3 Months Ended

Mar. 31, 2022

VIE primary beneficiary

Variable Interest Entities [Line Items]

Schedule Of Variable Interest Entities

The following table summarizes the amounts and expiration dates of the credit facilities and associated restricted receivables described above.

	Duke Energy
			Duke Energy		Duke Energy		Duke Energy
			Carolinas		Progress		Florida
(in millions)	CRC		DERF		DEPR		DEFR
Expiration date	February 2025		January 2025		April 2023		April 2023
Credit facility amount	$	350	$	475	$	350	$	250
Amounts borrowed at March 31, 2022	350		499		350		250
Amounts borrowed at December 31, 2021	350		475		350		250
Restricted Receivables at March 31, 2022	566		858		658		503
Restricted Receivables at December 31, 2021	587		844		574		427

VIE not primary beneficiary

Variable Interest Entities [Line Items]

Schedule Of Variable Interest Entities

The following tables summarize the impact of non-consolidated VIEs on the Condensed Consolidated Balance Sheets.

	March 31, 2022
	Duke Energy						Duke		Duke
	Pipeline		Commercial				Energy		Energy
(in millions)	Investments		Renewables		Total		Ohio		Indiana
Receivables from affiliated companies	$	—	$	—	$	—	$	65	$	80
Investments in equity method unconsolidated affiliates	29		504		533		—		—
Deferred tax asset	61		—		61		—		—
Total assets	$	90	$	504	$	594	$	65	$	80
Other current liabilities	50		3		53		—		—
Other noncurrent liabilities	52		3		55		—		—
Total liabilities	$	102	$	6	$	108	$	—	$	—
Net (liabilities) assets	$	(12)	$	498	$	486	$	65	$	80

	December 31, 2021
	Duke Energy						Duke		Duke
	Pipeline		Commercial				Energy		Energy
(in millions)	Investments		Renewables		Total		Ohio		Indiana
Receivables from affiliated companies	$	—	$	—	$	—	$	79	$	97
Investments in equity method unconsolidated affiliates	15		508		523		—		—
Other noncurrent assets	61		—		61		—		—
Total assets	$	76	$	508	$	584	$	79	$	97
Other current liabilities	47		4		51		—		—
Other noncurrent liabilities	54		3		57		—		—
Total liabilities	$	101	$	7	$	108	$	—	$	—
Net (liabilities) assets	$	(25)	$	501	$	476	$	79	$	97

DEFPF | VIE primary beneficiary

Variable Interest Entities [Line Items]

Schedule Of Variable Interest Entities

The following table summarizes the impact of DEFPF on Duke Energy Florida's Condensed Consolidated Balance Sheets.

(in millions)	March 31, 2022		December 31, 2021
Receivables of VIEs	$	5	$	5
Regulatory Assets: Current	54		54
Current Assets: Other	13		39
Other Noncurrent Assets: Regulatory assets	872		883
Current Liabilities: Other	2		9
Current maturities of long-term debt	56		56
Long-Term Debt	916		946

DECNCSF and DEPNCSF | VIE primary beneficiary

Variable Interest Entities [Line Items]

Schedule Of Variable Interest Entities

The following table summarizes the impact of these VIEs on Duke Energy Carolinas’ and Duke Energy Progress’ Consolidated Balance Sheets.

	March 31, 2022				December 31, 2021
	Duke Energy		Duke Energy		Duke Energy		Duke Energy
(in millions)	Carolinas		Progress		Carolinas		Progress
Regulatory Assets: Current	$	12	$	39	$	12	$	39
Current Assets: Other	4		14		—		—
Other Noncurrent Assets: Regulatory assets	217		711		220		720
Other Noncurrent Assets: Other	1		4		1		4
Current Liabilities: Other	2		6		—		—
Current maturities of long-term debt	10		32		5		15
Long-Term Debt	223		730		228		747

Commercial Renewables | VIE primary beneficiary

Variable Interest Entities [Line Items]

Schedule Of Variable Interest Entities

The table below presents material balances reported on Duke Energy's Condensed Consolidated Balance Sheets related to Commercial Renewables VIEs.

(in millions)	March 31, 2022		December 31, 2021
Current Assets: Other	$	215	$	215
Property, Plant and Equipment: Cost	7,337		7,339
Accumulated depreciation and amortization	(1,534)		(1,474)
Other Noncurrent Assets: Other	70		62
Current maturities of long-term debt	297		167
Long-Term Debt	1,325		1,475
Other Noncurrent Liabilities: AROs	173		173
Other Noncurrent Liabilities: Other	360		319

CRC | VIE not primary beneficiary

Variable Interest Entities [Line Items]

Schedule Of Variable Interest Entities

The following table shows the gross and net receivables sold.

	Duke Energy Ohio				Duke Energy Indiana
(in millions)	March 31, 2022		December 31, 2021		March 31, 2022		December 31, 2021
Receivables sold	$	263	$	269	$	305	$	328
Less: Retained interests	65		79		80		97
Net receivables sold	$	198	$	190	$	225	$	231

The following table shows sales and cash flows related to receivables sold.

	Duke Energy Ohio					Duke Energy Indiana
		Three Months Ended					Three Months Ended
		March 31,					March 31,
(in millions)		2022		2021			2022		2021
Sales
Receivables sold		$	663	$	561		$	782	$	698
Loss recognized on sale		3		3			4		3
Cash flows
Cash proceeds from receivables sold		$	674	$	596		$	795	$	746
Collection fees received		—		—			—		—
Return received on retained interests		1		1			2		2

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Revenue (Tables)

3 Months Ended

Mar. 31, 2022

Revenue from Contract with Customer [Abstract]

Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction

Supplemental requirements contracts that include contracted blocks of energy and capacity at contractually fixed prices have the following estimated remaining performance obligations:

	Remaining Performance Obligations
(in millions)	2022		2023		2024		2025		2026		Thereafter		Total
Progress Energy	$	80	$	53	$	45	$	7	$	7	$	43	$	235
Duke Energy Progress	6		8		8		—		—		—		22
Duke Energy Florida	74		45		37		7		7		43		213
Duke Energy Indiana	2		11		16		17		15		12		73

Estimated remaining performance obligations are as follows:

	Remaining Performance Obligations
(in millions)	2022		2023		2024		2025		2026		Thereafter		Total
Piedmont	$	48	$	64	$	61	$	60	$	50	$	286	$	569

Disaggregation of Revenue

Disaggregated revenues are presented as follows:

	Three Months Ended March 31, 2022
			Duke				Duke		Duke		Duke		Duke
(in millions)	Duke		Energy		Progress		Energy		Energy		Energy		Energy
By market or type of customer	Energy		Carolinas		Energy		Progress		Florida		Ohio		Indiana		Piedmont
Electric Utilities and Infrastructure
Residential	$	2,767	$	831	$	1,368	$	624	$	744	$	211	$	354	$	—
General	1,604		544		726		325		401		116		218		—
Industrial	772		276		270		194		76		35		192		—
Wholesale	626		113		411		349		62		23		79		—
Other revenues	202		111		211		139		72		21		(36)		—
Total Electric Utilities and Infrastructure revenue from contracts with customers	$	5,971	$	1,875	$	2,986	$	1,631	$	1,355	$	406	$	807	$	—
Gas Utilities and Infrastructure
Residential	$	572	$	—	$	—	$	—	$	—	$	149	$	—	$	423
Commercial	269		—		—		—		—		64		—		204
Industrial	57		—		—		—		—		7		—		50
Power Generation	—		—		—		—		—		—		—		24
Other revenues	115		—		—		—		—		6		—		93
Total Gas Utilities and Infrastructure revenue from contracts with customers	$	1,013	$	—	$	—	$	—	$	—	$	226	$	—	$	794
Commercial Renewables
Revenue from contracts with customers	$	51	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Other
Revenue from contracts with customers	$	7	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Total revenue from contracts with customers	$	7,042	$	1,875	$	2,986	$	1,631	$	1,355	$	632	$	807	$	794
Other revenue sources(a)	$	90	$	13	$	6	$	1	$	—	$	6	$	15	$	11
Total revenues	$	7,132	$	1,888	$	2,992	$	1,632	$	1,355	$	638	$	822	$	805

(a)Other revenue sources include revenues from leases, derivatives and alternative revenue programs that are not considered revenues from contracts with customers. Alternative revenue programs in certain jurisdictions include regulatory mechanisms that periodically adjust for over or under collection of related revenues.

	Three Months Ended March 31, 2021
			Duke				Duke		Duke		Duke		Duke
(in millions)	Duke		Energy		Progress		Energy		Energy		Energy		Energy
By market or type of customer	Energy		Carolinas		Energy		Progress		Florida		Ohio		Indiana		Piedmont
Electric Utilities and Infrastructure
Residential	$	2,462	$	793	$	1,162	$	560	$	602	$	195	$	313	$	—
General	1,419		502		624		306		318		104		189		—
Industrial	662		256		207		145		62		31		167		—
Wholesale	504		114		326		292		34		13		50		—
Other revenues	226		74		160		83		77		22		18		—
Total Electric Utilities and Infrastructure revenue from contracts with customers	$	5,273	$	1,739	$	2,479	$	1,386	$	1,093	$	365	$	737	$	—
Gas Utilities and Infrastructure
Residential	$	460	$	—	$	—	$	—	$	—	$	110	$	—	$	351
Commercial	204		—		—		—		—		48		—		156
Industrial	50		—		—		—		—		7		—		43
Power Generation	—		—		—		—		—		—		—		22
Other revenues	47		—		—		—		—		5		—		26
Total Gas Utilities and Infrastructure revenue from contracts with customers	$	761	$	—	$	—	$	—	$	—	$	170	$	—	$	598
Commercial Renewables
Revenue from contracts with customers	$	54	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Other
Revenue from contracts with customers	$	6	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Total revenue from contracts with customers	$	6,094	$	1,739	$	2,479	$	1,386	$	1,093	$	535	$	737	$	598
Other revenue sources(a)	$	56	$	(23)	$	26	$	15	$	8	$	(3)	$	8	$	8
Total revenues	$	6,150	$	1,716	$	2,505	$	1,401	$	1,101	$	532	$	745	$	606

(a)Other revenue sources include revenues from leases, derivatives and alternative revenue programs that are not considered revenues from contracts with customers. Alternative revenue programs in certain jurisdictions include regulatory mechanisms that periodically adjust for over or under collection of related revenues.

Reserve for Credit Losses for Trade and Other Receivables

The following table presents the reserve for credit losses for trade and other receivables based on adoption of the new standard.

	Three Months Ended March 31, 2021 and 2022
			Duke				Duke		Duke		Duke		Duke
	Duke		Energy		Progress		Energy		Energy		Energy		Energy
(in millions)	Energy		Carolinas		Energy		Progress		Florida		Ohio		Indiana		Piedmont
Balance at December 31, 2020	$	146	$	23	$	37	$	23	$	14	$	4	$	3	$	12
Write-Offs	(21)		(8)		(10)		(5)		(5)		—		—		(1)
Credit Loss Expense	17		10		7		2		5		—		—		3
Other Adjustments	5		9		3		3		1		—		—		—
Balance at March 31, 2021	$	147	$	34	$	37	$	23	$	15	$	4	$	3	$	14
Balance at December 31, 2021	$	122	$	42	$	36	$	21	$	16	$	4	$	3	$	15
Write-Offs	(23)		(9)		(10)		(2)		(8)		—		—		(1)
Credit Loss Expense	24		5		12		4		8		—		—		3
Other Adjustments	17		14		13		8		5		—		—		—
Balance at March 31, 2022	$	140	$	52	$	51	$	31	$	21	$	4	$	3	$	17

Aging of Trade Receivables

The aging of trade receivables is presented in the table below. Duke Energy considers receivables greater than 30 days outstanding past due.

	March 31, 2022
			Duke				Duke		Duke		Duke		Duke
	Duke		Energy		Progress		Energy		Energy		Energy		Energy
(in millions)	Energy		Carolinas		Energy		Progress		Florida		Ohio		Indiana		Piedmont
Unbilled Revenue(a)(b)	$	945	$	339	$	270	$	161	$	109	$	7	$	44	$	64
0-30 days	2,133		518		944		558		386		40		26		215
30-60 days	288		75		111		64		47		8		4		23
60-90 days	102		33		40		22		18		2		3		7
90+ days	274		119		77		39		38		46		9		7
Deferred Payment Arrangements(c)	136		60		61		33		28		2		—		4
Trade and Other Receivables	$	3,878	$	1,144	$	1,503	$	877	$	626	$	105	$	86	$	320

	December 31, 2021
			Duke				Duke		Duke		Duke		Duke
	Duke		Energy		Progress		Energy		Energy		Energy		Energy
(in millions)	Energy		Carolinas		Energy		Progress		Florida		Ohio		Indiana		Piedmont
Unbilled Revenue(a)(b)	$	964	$	316	$	266	$	193	$	73	$	4	$	27	$	106
0-30 days	2,104		595		800		405		393		42		51		202
30-60 days	212		77		72		44		28		4		13		12
60-90 days	88		37		41		21		20		1		1		2
90+ days	249		106		65		37		28		47		11		7
Deferred Payment Arrangements(c)	115		55		45		22		23		2		—		4
Trade and Other Receivables	$	3,732	$	1,186	$	1,289	$	722	$	565	$	100	$	103	$	333

(a)Unbilled revenues are recognized by applying customer billing rates to the estimated volumes of energy or natural gas delivered but not yet billed and are included within Receivables and Receivables of VIEs on the Condensed Consolidated Balance Sheets.

(b)Duke Energy Ohio and Duke Energy Indiana sell, on a revolving basis, nearly all of their retail accounts receivable, including receivables for unbilled revenues, to an affiliate, CRC, and account for the transfers of receivables as sales. Accordingly, the receivables sold are not reflected on the Condensed Consolidated Balance Sheets of Duke Energy Ohio and Duke Energy Indiana. See Note 11 for further information. These receivables for unbilled revenues are $63 million and $100 million for Duke Energy Ohio and Duke Energy Indiana, respectively, as of March 31, 2022, and $82 million and $121 million for Duke Energy Ohio and Duke Energy Indiana, respectively, as of December 31, 2021.

(c)Due to certain customer financial hardships created by the COVID-19 pandemic and resulting stay-at-home orders, Duke Energy permitted customers to defer payment of past-due amounts through an installment payment plan over a period of several months.

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Stockholders' Equity (Tables)

3 Months Ended

Mar. 31, 2022

Equity [Abstract]

Schedule Of Earnings Per Share

The following table presents Duke Energy’s basic and diluted EPS calculations, the weighted average number of common shares outstanding and common and preferred share dividends declared.

	Three Months Ended March 31,
(in millions, except per share amounts)	2022		2021
Net income available to Duke Energy common stockholders	$	818	$	953
Accumulated preferred stock dividends adjustment	12		12
Less: Impact of participating securities	1		1
Income from continuing operations available to Duke Energy common stockholders	$	829	$	964
Weighted average common shares outstanding – basic and diluted	770		769
EPS available to Duke Energy common stockholders
Basic and diluted	$	1.08	$	1.25
Potentially dilutive items excluded from the calculation(a)	2		2
Dividends declared per common share	$	0.985	$	0.965
Dividends declared on Series A preferred stock per depositary share(b)	$	0.359	$	0.359
Dividends declared on Series B preferred stock per share(c)	$	24.375	$	24.375

(a)Performance stock awards were not included in the dilutive securities calculation because the performance measures related to the awards had not been met.

(b)5.75% Series A Cumulative Redeemable Perpetual Preferred Stock dividends are payable quarterly in arrears on the 16th day of March, June, September and December. The preferred stock has a $25 liquidation preference per depositary share.

(c)4.875% Series B Fixed-Rate Reset Cumulative Redeemable Perpetual Preferred Stock dividends are payable semiannually in arrears on the 16th day of March and September. The preferred stock has a $1,000 liquidation preference per share.

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Employee Benefit Plans (Tables)

3 Months Ended

Mar. 31, 2022

Qualified Pension Plans

Defined Benefit Plan Disclosure [Line Items]

Components of Net Periodic Pension Costs

The following tables include the components of net periodic pension costs for qualified pension plans.

	Three Months Ended March 31, 2022
			Duke				Duke		Duke		Duke		Duke
	Duke		Energy		Progress		Energy		Energy		Energy		Energy
(in millions)	Energy		Carolinas		Energy		Progress		Florida		Ohio		Indiana		Piedmont
Service cost	$	40	$	12	$	12	$	7	$	4	$	1	$	2	$	1
Interest cost on projected benefit obligation	58		14		18		8		10		3		5		2
Expected return on plan assets	(140)		(38)		(46)		(22)		(24)		(5)		(9)		(6)
Amortization of actuarial loss	24		5		6		3		3		1		2		2
Amortization of prior service credit	(5)		(1)		—		—		—		—		—		(2)
Amortization of settlement charges	2		1		1		—		—		—		—		—
Net periodic pension costs	$	(21)	$	(7)	$	(9)	$	(4)	$	(7)	$	—	$	—	$	(3)

	Three Months Ended March 31, 2021
			Duke				Duke		Duke		Duke		Duke
	Duke		Energy		Progress		Energy		Energy		Energy		Energy
(in millions)	Energy		Carolinas		Energy		Progress		Florida		Ohio		Indiana		Piedmont
Service cost	$	44	$	14	$	13	$	7	$	5	$	1	$	2	$	1
Interest cost on projected benefit obligation	55		13		17		7		10		3		5		2
Expected return on plan assets	(139)		(35)		(47)		(21)		(26)		(7)		(10)		(5)
Amortization of actuarial loss	33		7		10		5		5		2		3		2
Amortization of prior service credit	(7)		(2)		(1)		—		—		—		—		(1)
Amortization of settlement charges	2		1		1		—		—		—		—		—
Net periodic pension costs	$	(12)	$	(2)	$	(7)	$	(2)	$	(6)	$	(1)	$	—	$	(1)

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Income Taxes (Tables)

3 Months Ended

Mar. 31, 2022

Income Tax Disclosure [Abstract]

Summary of Effective Tax Rates

The ETRs from continuing operations for each of the Duke Energy Registrants are included in the following table.

	Three Months Ended
	March 31,
	2022		2021
Duke Energy	(1.7)	%	8.2	%
Duke Energy Carolinas	7.4	%	6.9	%
Progress Energy	15.9	%	12.9	%
Duke Energy Progress	14.0	%	8.3	%
Duke Energy Florida	20.1	%	19.3	%
Duke Energy Ohio	(266.7)	%	13.3	%
Duke Energy Indiana	31.9	%	17.6	%
Piedmont	13.4	%	11.4	%

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Organization and Basis of Presentation (Schedule of Allocated Losses from Subsidiaries, Noncontrolling Interest) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Allocated losses to noncontrolling tax equity members utilizing the HLBV method	$ 24	$ 43
Allocated losses to noncontrolling members based on pro rata shares of ownership	13	8
Total Noncontrolling Interest Allocated Losses	$ 37	$ 51

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Organization and Basis of Presentation (Schedule of Cash and Cash Equivalents) (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021	Mar. 31, 2021	Dec. 31, 2020
Current Assets
Cash and cash equivalents	$ 853	$ 343
Other	151	170
Other Noncurrent Assets
Other	16	7
Total cash, cash equivalents and restricted cash	1,020	520	$ 692	$ 556
Duke Energy Carolinas
Current Assets
Cash and cash equivalents	4	7
Other	4
Other Noncurrent Assets
Other	1	1
Total cash, cash equivalents and restricted cash	9	8	12	21
Progress Energy
Current Assets
Cash and cash equivalents	63	70
Other	28	39
Other Noncurrent Assets
Other	4	4
Total cash, cash equivalents and restricted cash	95	113	189	200
Duke Energy Progress
Current Assets
Cash and cash equivalents	42	35
Other	13
Other Noncurrent Assets
Other	4	4
Total cash, cash equivalents and restricted cash	59	39	46	39
Duke Energy Florida
Current Assets
Cash and cash equivalents	13	23
Other	13	39
Other Noncurrent Assets
Total cash, cash equivalents and restricted cash	$ 26	$ 62	$ 35	$ 50

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Organization and Basis of Presentation (Schedule of Inventory) (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Public Utilities, Inventory [Line Items]
Inventory	$ 3,171	$ 3,199
Materials and supplies
Public Utilities, Inventory [Line Items]
Inventory	2,455	2,397
Coal
Public Utilities, Inventory [Line Items]
Inventory	469	486
Natural gas, oil and other fuel
Public Utilities, Inventory [Line Items]
Inventory	247	316
Duke Energy Carolinas
Public Utilities, Inventory [Line Items]
Inventory	1,040	1,026
Duke Energy Carolinas | Materials and supplies
Public Utilities, Inventory [Line Items]
Inventory	810	793
Duke Energy Carolinas | Coal
Public Utilities, Inventory [Line Items]
Inventory	196	195
Duke Energy Carolinas | Natural gas, oil and other fuel
Public Utilities, Inventory [Line Items]
Inventory	34	38
Progress Energy
Public Utilities, Inventory [Line Items]
Inventory	1,403	1,398
Progress Energy | Materials and supplies
Public Utilities, Inventory [Line Items]
Inventory	1,089	1,067
Progress Energy | Coal
Public Utilities, Inventory [Line Items]
Inventory	149	167
Progress Energy | Natural gas, oil and other fuel
Public Utilities, Inventory [Line Items]
Inventory	165	164
Duke Energy Progress
Public Utilities, Inventory [Line Items]
Inventory	940	921
Duke Energy Progress | Materials and supplies
Public Utilities, Inventory [Line Items]
Inventory	744	729
Duke Energy Progress | Coal
Public Utilities, Inventory [Line Items]
Inventory	93	94
Duke Energy Progress | Natural gas, oil and other fuel
Public Utilities, Inventory [Line Items]
Inventory	103	98
Duke Energy Florida
Public Utilities, Inventory [Line Items]
Inventory	463	477
Duke Energy Florida | Materials and supplies
Public Utilities, Inventory [Line Items]
Inventory	345	338
Duke Energy Florida | Coal
Public Utilities, Inventory [Line Items]
Inventory	56	73
Duke Energy Florida | Natural gas, oil and other fuel
Public Utilities, Inventory [Line Items]
Inventory	62	66
Duke Energy Ohio
Public Utilities, Inventory [Line Items]
Inventory	114	116
Duke Energy Ohio | Materials and supplies
Public Utilities, Inventory [Line Items]
Inventory	89	80
Duke Energy Ohio | Coal
Public Utilities, Inventory [Line Items]
Inventory	16	19
Duke Energy Ohio | Natural gas, oil and other fuel
Public Utilities, Inventory [Line Items]
Inventory	9	17
Duke Energy Indiana
Public Utilities, Inventory [Line Items]
Inventory	430	418
Duke Energy Indiana | Materials and supplies
Public Utilities, Inventory [Line Items]
Inventory	320	311
Duke Energy Indiana | Coal
Public Utilities, Inventory [Line Items]
Inventory	108	105
Duke Energy Indiana | Natural gas, oil and other fuel
Public Utilities, Inventory [Line Items]
Inventory	2	2
Piedmont
Public Utilities, Inventory [Line Items]
Inventory	51	109
Piedmont | Materials and supplies
Public Utilities, Inventory [Line Items]
Inventory	14	14
Piedmont | Natural gas, oil and other fuel
Public Utilities, Inventory [Line Items]
Inventory	$ 37	$ 95

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Business Segments (Narrative) (Details) $ in Millions			3 Months Ended
	Sep. 08, 2021 USD ($)	Jan. 28, 2021 USD ($) closing	Mar. 31, 2022 USD ($) segment	Jan. 01, 2023
Duke Energy Indiana | Noncontrolling Interests
Segment Reporting Information [Line Items]
Percentage sold		19.90%
Number of closings | closing		2
Value of sale of parent interest	$ 1,025	$ 2,000
Ownership interest sold	11.05%
Proceed of purchase price for exchange in interest	50.00%
Duke Energy Indiana | Noncontrolling Interests | Forecast
Segment Reporting Information [Line Items]
Percentage sold				19.90%
Proceed of purchase price for exchange in interest				50.00%
Duke Energy Ohio
Segment Reporting Information [Line Items]
Number of reportable segments | segment			2
Wind and solar | Nonregulated
Segment Reporting Information [Line Items]
Renewable merchant plants			$ 200
Joint owner ownership percentage			51.00%

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Business Segments (Business Segment Data) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Segment Reporting Information [Line Items]
Operating revenues	$ 7,132	$ 6,150
Segment income (loss)	818	953
Less: Noncontrolling interests	37	51
Add: Preferred stock dividend	39	39
Net Income	820	941
Segment assets	171,220		$ 169,587
Impairment of assets and other charges	215
Unregulated operating revenue	(197)	(182)
Incurred costs	1,630	1,402
Equity in earnings (losses) of unconsolidated affiliates	25	(17)
Duke Energy Carolinas
Segment Reporting Information [Line Items]
Operating revenues	1,888	1,716
Segment assets	48,033		47,162
Impairment of assets and other charges	3
Incurred costs	512	441
Duke Energy Ohio
Segment Reporting Information [Line Items]
Operating revenues	638	532
Segment income (loss)	77	91
Segment assets	10,731		$ 10,774
Incurred costs	178	108
Electric Utilities and Infrastructure
Segment Reporting Information [Line Items]
Operating revenues	5,995	5,273
Gas Utilities and Infrastructure
Segment Reporting Information [Line Items]
Operating revenues	1,009	752
Gas Utilities and Infrastructure | Asset Impairment for Regulatory Action
Segment Reporting Information [Line Items]
Equity in earnings (losses) of unconsolidated affiliates		(6)
Commercial Renewables
Segment Reporting Information [Line Items]
Operating revenues	121	119
Total Reportable Segments
Segment Reporting Information [Line Items]
Operating revenues	7,125	6,144
Other
Segment Reporting Information [Line Items]
Operating revenues	7	6
Operating Segments | Electric Utilities and Infrastructure
Segment Reporting Information [Line Items]
Operating revenues	6,002	5,281
Segment income (loss)	723	820
Segment assets	144,790
Operating Segments | Electric Utilities and Infrastructure | Duke Energy Supreme Court Ruling
Segment Reporting Information [Line Items]
Operating revenues	46
Less: Noncontrolling interests	(22)
Impairment of assets and other charges	211
Operating Segments | Electric Utilities and Infrastructure | Duke Energy Ohio
Segment Reporting Information [Line Items]
Operating revenues	412	363
Segment income (loss)	41	50
Segment assets	7,101
Operating Segments | Gas Utilities and Infrastructure
Segment Reporting Information [Line Items]
Operating revenues	1,032	775
Segment income (loss)	254	245
Segment assets	15,170
Operating Segments | Gas Utilities and Infrastructure | Duke Energy Ohio
Segment Reporting Information [Line Items]
Operating revenues	226	169
Segment income (loss)	38	43
Segment assets	3,784
Operating Segments | Commercial Renewables
Segment Reporting Information [Line Items]
Operating revenues	121	119
Segment income (loss)	11	27
Segment assets	7,021
Operating Segments | Commercial Renewables | Texas Storm Uri
Segment Reporting Information [Line Items]
Segment income (loss)		(35)
Less: Noncontrolling interests		12
Unregulated operating revenue		8
Incurred costs		2
Equity in earnings (losses) of unconsolidated affiliates		(29)
Operating Segments | Total Reportable Segments
Segment Reporting Information [Line Items]
Operating revenues	7,155	6,175
Segment income (loss)	988	1,092
Segment assets	166,981
Operating Segments | Total Reportable Segments | Duke Energy Ohio
Segment Reporting Information [Line Items]
Operating revenues	638	532
Segment income (loss)	79	93
Segment assets	10,885
Other | Other
Segment Reporting Information [Line Items]
Operating revenues	30	26
Segment income (loss)	(170)	(139)
Segment assets	4,251
Other | Other | Duke Energy Ohio
Segment Reporting Information [Line Items]
Segment income (loss)	(2)	(2)
Segment assets	14
Eliminations
Segment Reporting Information [Line Items]
Operating revenues	(53)	(51)
Segment assets	(12)
Eliminations | Duke Energy Ohio
Segment Reporting Information [Line Items]
Segment assets	(168)
Eliminations | Electric Utilities and Infrastructure
Segment Reporting Information [Line Items]
Operating revenues	7	8
Eliminations | Gas Utilities and Infrastructure
Segment Reporting Information [Line Items]
Operating revenues	23	23
Eliminations | Total Reportable Segments
Segment Reporting Information [Line Items]
Operating revenues	30	31
Eliminations | Other
Segment Reporting Information [Line Items]
Operating revenues	$ 23	$ 20

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Regulatory Matters (Regulatory Matters Narrative - Duke Energy Carolinas and Duke Energy Progress) (Details)	Apr. 05, 2022
NCUC | Duke Energy Carolinas and Duke Energy Progress | HB 951 | Subsequent event
Public Utilities, General Disclosures [Line Items]
Retail portion of remaining net book value of retiring coal plants (as a percent)	50.00%

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Regulatory Matters (Regulatory Matters Narrative - Duke Energy Carolinas) (Details) - Nuclear Regulatory Commission - contention					3 Months Ended
	Sep. 27, 2021	Jul. 28, 2021	Jun. 07, 2021	Jun. 06, 2021	Mar. 31, 2022
Public Utilities, General Disclosures [Line Items]
Operating license extension					20 years
Duke Energy Carolinas | Oconee Nuclear Station Subsequent License Renewal
Public Utilities, General Disclosures [Line Items]
Comment period		60 days
Number of contentions	3
Duke Energy Carolinas | Oconee Nuclear Station Subsequent License Renewal | Oconee Nuclear Station
Public Utilities, General Disclosures [Line Items]
Operating license extension			20 years
Operating license			80 years	60 years

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Regulatory Matters (Regulatory Matters Narrative - Duke Energy Progress) (Details)	Oct. 16, 2020
Duke Energy Progress | FERC | FERC Return on Equity Complaint, NCEMC
Public Utilities, General Disclosures [Line Items]
Approved return on equity percentage	11.00%

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Regulatory Matters (Regulatory Matters Narrative - Duke Energy Florida) (Details) - Duke Energy Florida			12 Months Ended
	May 04, 2021 USD ($)	Jul. 01, 2020 USD ($) plant MW	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Apr. 11, 2022 USD ($)
FPSC
Public Utilities, General Disclosures [Line Items]
Number of solar plants | plant		10
Generation capacity (MW) | MW		750
2021 Settlement | FPSC
Public Utilities, General Disclosures [Line Items]
Public utilities, approved equity capital structure, percentage	53.00%
Public utilities, approved debt capital structure, percentage	47.00%
Public utilities, basis points, increase, percentage	0.25%
Contract with customer, asset, after allowance for credit loss, noncurrent	$ 173,000,000
Future investment in infrastructure	$ 1,000,000,000
2021 Settlement | FPSC | US Treasury Securities
Public Utilities, General Disclosures [Line Items]
Public utilities, basis points, increase, percentage	0.50%
2021 Settlement | FPSC | Minimum
Public Utilities, General Disclosures [Line Items]
Approved return on equity percentage	8.85%
2021 Settlement | FPSC | Minimum | US Treasury Securities
Public Utilities, General Disclosures [Line Items]
Approved return on equity percentage	9.85%
2021 Settlement | FPSC | Maximum
Public Utilities, General Disclosures [Line Items]
Approved return on equity percentage	10.85%
2021 Settlement | FPSC | Maximum | US Treasury Securities
Public Utilities, General Disclosures [Line Items]
Approved return on equity percentage	10.10%
2021 Settlement | FPSC | Weighted Average
Public Utilities, General Disclosures [Line Items]
Approved return on equity percentage	9.85%
2021 Settlement | FPSC | Subsequent event
Public Utilities, General Disclosures [Line Items]
Approved rate increase, amount			$ 79,000,000	$ 49,000,000	$ 67,000,000
Storm Protection Plan | FPSC | Subsequent event
Public Utilities, General Disclosures [Line Items]
Investment in transmission and distribution						$ 7,000,000,000
Solar Project
Public Utilities, General Disclosures [Line Items]
Estimated cost of facilities		$ 1,000,000,000
Estimated cost of facilities period		3 years

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Regulatory Matters (Regulatory Matters Narrative - Duke Energy Ohio) (Details) $ in Millions		3 Months Ended
	Oct. 01, 2021 USD ($)	Mar. 31, 2022 USD ($) site	Dec. 31, 2021 USD ($)	Mar. 31, 2021 USD ($)	Apr. 27, 2022 USD ($)
Public Utilities, General Disclosures [Line Items]
Operating revenues		$ 7,132		$ 6,150
Incurred costs		1,630		1,402
Income Tax (Benefit) Expense		(14)		84
Impairment of assets and other charges		215
Public utilities, property, plant and equipment, net		112,316	$ 111,408
Duke Energy Ohio
Public Utilities, General Disclosures [Line Items]
Operating revenues		638		532
Incurred costs		178		108
Income Tax (Benefit) Expense		(56)		$ 14
Public utilities, property, plant and equipment, net		8,716	8,625
Duke Energy Ohio | Duke Energy Ohio Electric Base Rate Case | PUCO
Public Utilities, General Disclosures [Line Items]
Requested rate increase (decrease), amount	$ 55
Requested return on equity, percent	10.30%
Requested rate increase, percentage	3.30%
Duke Energy Ohio | Natural Gas Pipeline extension | OPSB
Public Utilities, General Disclosures [Line Items]
Estimated capital cost excluding AFUDC		$ 185
Duke Energy Ohio | MGP Cost Recovery - 2009 Through 2012 | PUCO
Public Utilities, General Disclosures [Line Items]
Number of environmental remediation sites | site		2
Duke Energy Ohio | MGP Cost Recovery - 2013 Through 2019 | PUCO
Public Utilities, General Disclosures [Line Items]
Operating revenues		$ 15
Incurred costs		58
Income Tax (Benefit) Expense		$ (72)
Duke Energy Ohio | Midwest Propane Caverns
Public Utilities, General Disclosures [Line Items]
Impairment of assets and other charges			$ 19
Duke Energy Ohio | Midwest Propane Caverns | Subsequent event
Public Utilities, General Disclosures [Line Items]
Public utilities, property, plant and equipment, net					$ 7

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Regulatory Matters (Regulatory Matters Narrative - Duke Energy Indiana) (Details) - USD ($) $ in Millions					3 Months Ended
	Jul. 28, 2021	Jun. 29, 2020	Dec. 04, 2019	Jul. 02, 2019	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2020
Public Utilities, General Disclosures [Line Items]
Impairment of assets and other charges					$ 215
Operating revenues					7,132	$ 6,150
Duke Energy Indiana
Public Utilities, General Disclosures [Line Items]
Impairment of assets and other charges					211
Operating revenues					822	$ 745
Duke Energy Indiana | IURC | Indiana rate case 2019
Public Utilities, General Disclosures [Line Items]
Requested rate increase (decrease), amount				$ 395
Requested rate increase, percentage, net of tax			15.60%
Requested rate increase (decrease), amended amount			$ 396
Approved rate increase, amount		$ 146
Rate base							$ 10,200
Reduction of requested rate increase		$ 200
Reduction due to depreciation methodology		50.00%
Reduction due to approved return on equity		20.00%
Approved return on equity percentage	9.70%	9.70%
Requested return on equity, percent		10.40%
Reduction due to earnings adjustments		20.00%
Estimated percentage of total rate increase, step one		75.00%
Estimated percentage of total rate increase, step two	25.00%
Public utilities, approved equity capital structure, percentage	54.00%
Impairment of assets and other charges					211
Operating revenues					$ 46

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Regulatory Matters (Regulatory Matters Narrative - Piedmont) (Details) - 2022 South Carolina Rate Case - PSCSC - Piedmont - Subsequent event $ in Millions	Apr. 01, 2022 USD ($)
Public Utilities, General Disclosures [Line Items]
Requested rate increase (decrease), amount	$ 7
Requested rate increase, percentage, net of tax	3.40%

XML

Regulatory Matters (Schedule of Net Carrying Value Of Facilities and Megawatt Capacity) (Details) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2022 USD ($) MW	Dec. 31, 2034 asset	Dec. 31, 2021 USD ($)
Public Utilities, General Disclosures [Line Items]
Public utilities, property, plant and equipment, net	$ 112,316		$ 111,408
Duke Energy Carolinas
Public Utilities, General Disclosures [Line Items]
Public utilities, property, plant and equipment, net	34,463		34,122
Duke Energy Progress
Public Utilities, General Disclosures [Line Items]
Public utilities, property, plant and equipment, net	23,694		23,657
Duke Energy Florida
Public Utilities, General Disclosures [Line Items]
Public utilities, property, plant and equipment, net	18,254		18,046
Duke Energy Indiana
Public Utilities, General Disclosures [Line Items]
Public utilities, property, plant and equipment, net	$ 11,801		$ 11,760
Generation facilities to be retired
Public Utilities, General Disclosures [Line Items]
Capacity (in MW) | MW	8,386
Public utilities, property, plant and equipment, net	$ 6,094
Generation facilities to be retired | Duke Energy Carolinas | Allen Steam Station Unit 1
Public Utilities, General Disclosures [Line Items]
Capacity (in MW) | MW	167
Public utilities, property, plant and equipment, net	$ 12
Generation facilities to be retired | Duke Energy Carolinas | Allen Steam Station Unit 5
Public Utilities, General Disclosures [Line Items]
Capacity (in MW) | MW	259
Public utilities, property, plant and equipment, net	$ 265
Generation facilities to be retired | Duke Energy Carolinas | Cliffside Unit 5
Public Utilities, General Disclosures [Line Items]
Capacity (in MW) | MW	546
Public utilities, property, plant and equipment, net	$ 358
Generation facilities to be retired | Duke Energy Progress | Mayo Unit 1
Public Utilities, General Disclosures [Line Items]
Capacity (in MW) | MW	713
Public utilities, property, plant and equipment, net	$ 621
Generation facilities to be retired | Duke Energy Progress | Roxboro Units 3-4
Public Utilities, General Disclosures [Line Items]
Capacity (in MW) | MW	1,409
Public utilities, property, plant and equipment, net	$ 450
Generation facilities to be retired | Duke Energy Florida | Crystal River Units 4-5
Public Utilities, General Disclosures [Line Items]
Capacity (in MW) | MW	1,442
Public utilities, property, plant and equipment, net	$ 1,636
Generation facilities to be retired | Duke Energy Florida | Crystal River Units 4 and 5 | Forecast
Public Utilities, General Disclosures [Line Items]
Facilities retiring ahead of schedule | asset		2
Facilities retiring ahead of schedule, years ahead		8 years
Generation facilities to be retired | Duke Energy Indiana | Gibson Units 1-5
Public Utilities, General Disclosures [Line Items]
Capacity (in MW) | MW	2,845
Public utilities, property, plant and equipment, net	$ 2,076
Generation facilities to be retired | Duke Energy Indiana | Cayuga Units 1-2
Public Utilities, General Disclosures [Line Items]
Capacity (in MW) | MW	1,005
Public utilities, property, plant and equipment, net	$ 676

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Commitments and Contingencies (Schedule of Environmental Loss Contingencies) (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Environmental Matters Details [Line Items]
Reserves for Environmental Remediation	$ 87	$ 88
Duke Energy Carolinas
Environmental Matters Details [Line Items]
Reserves for Environmental Remediation	19	19
Progress Energy
Environmental Matters Details [Line Items]
Reserves for Environmental Remediation	23	23
Duke Energy Progress
Environmental Matters Details [Line Items]
Reserves for Environmental Remediation	11	11
Duke Energy Florida
Environmental Matters Details [Line Items]
Reserves for Environmental Remediation	11	11
Duke Energy Ohio
Environmental Matters Details [Line Items]
Reserves for Environmental Remediation	33	34
Duke Energy Indiana
Environmental Matters Details [Line Items]
Reserves for Environmental Remediation	4	4
Piedmont
Environmental Matters Details [Line Items]
Reserves for Environmental Remediation	$ 8	$ 9

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Commitments and Contingencies (Narrative) (Details) $ in Millions			1 Months Ended
	May 02, 2022 USD ($)	Jun. 16, 2021 people	Apr. 30, 2022 USD ($)	Mar. 31, 2022 USD ($) case	Dec. 31, 2021 USD ($)	Nov. 15, 2021 lawsuit	Jun. 18, 2018 USD ($)
Texas Storm Uri Tort Litigation | Pending Litigation
Loss Contingencies [Line Items]
Loss contingency, pending claims, number | case				5
Number of cases named as defendant | case				3
Duke Energy Carolinas | Ruben Villano, et al. v. Duke Energy Carolinas, LLC | Pending Litigation
Loss Contingencies [Line Items]
Loss contingency, pending claims, number | lawsuit						1
Number of individuals | people		9
Number of survivors | people		4
Number of deceased individuals | people		5
Duke Energy Carolinas | Asbestos-related Injuries and Damages Claims
Loss Contingencies [Line Items]
Asbestos-related injuries and damages reserves				$ 495	$ 501
Probable insurance recoveries				644	644
Duke Energy and Duke Energy Carolinas | ASU 2016-13
Loss Contingencies [Line Items]
Reserve for credit losses for insurance receivables				$ 12	$ 12
Duke Energy Progress | Spent Nuclear Fuel Matters
Loss Contingencies [Line Items]
Gain contingency, unrecorded amount							$ 100
Duke Energy Progress | Spent Nuclear Fuel Matters | Subsequent event
Loss Contingencies [Line Items]
Amount awarded			$ 87
Duke Energy Florida | Spent Nuclear Fuel Matters
Loss Contingencies [Line Items]
Gain contingency, unrecorded amount							$ 200
Duke Energy Florida | Spent Nuclear Fuel Matters | Subsequent event
Loss Contingencies [Line Items]
Amount awarded	$ 180

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Debt and Credit Facilities (Summary of Debt Issuances) (Details)	Mar. 31, 2022 USD ($)
Debt Instrument [Line Items]
Debt issuances	$ 2,050,000,000
2.850% March 2022 Notes Due March 2032
Debt Instrument [Line Items]
Interest Rate	2.85%
Debt issuances	$ 500,000,000
3.550% March 2022 Notes Due March 2052
Debt Instrument [Line Items]
Interest Rate	3.55%
Debt issuances	$ 650,000,000
3.400% March 2022 Notes Due March 2032
Debt Instrument [Line Items]
Interest Rate	3.40%
Debt issuances	$ 500,000,000
4.000% March 2022 Notes Due March 2052
Debt Instrument [Line Items]
Interest Rate	4.00%
Debt issuances	$ 400,000,000
Duke Energy Carolinas
Debt Instrument [Line Items]
Debt issuances	1,150,000,000
Duke Energy Carolinas | 2.850% March 2022 Notes Due March 2032
Debt Instrument [Line Items]
Debt issuances	500,000,000
Duke Energy Carolinas | 3.550% March 2022 Notes Due March 2052
Debt Instrument [Line Items]
Debt issuances	650,000,000
Duke Energy Progress
Debt Instrument [Line Items]
Debt issuances	900,000,000
Duke Energy Progress | 3.400% March 2022 Notes Due March 2032
Debt Instrument [Line Items]
Debt issuances	500,000,000
Duke Energy Progress | 4.000% March 2022 Notes Due March 2052
Debt Instrument [Line Items]
Debt issuances	$ 400,000,000

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Debt and Credit Facilities (Summary of Current Maturities of Long-term Debt) (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
Current maturities of long-term debt	$ 3,884	$ 3,387
Other debt securities
Debt Instrument [Line Items]
Current maturities of long-term debt	584
Progress Energy
Debt Instrument [Line Items]
Current maturities of long-term debt	$ 1,095	1,082
Progress Energy | Debt Maturing April 2022, 3.150% interest rate | Unsecured Debt
Debt Instrument [Line Items]
Interest Rate	3.15%
Current maturities of long-term debt	$ 450
Duke Energy (Parent) | Debt Maturing August 2022, 3.050% interest rate | Unsecured Debt
Debt Instrument [Line Items]
Interest Rate	3.05%
Current maturities of long-term debt	$ 500
Duke Energy (Parent) | Debt Maturing August 2022, 2.400% interest rate | Unsecured Debt
Debt Instrument [Line Items]
Interest Rate	2.40%
Current maturities of long-term debt	$ 500
Duke Energy Carolinas
Debt Instrument [Line Items]
Current maturities of long-term debt	$ 1,367	362
Duke Energy Carolinas | Debt Maturing May 2022, 3.350% interest rate | First Mortgage Bonds
Debt Instrument [Line Items]
Interest Rate	3.35%
Current maturities of long-term debt	$ 350
Duke Energy Carolinas | Debt Maturing March 2023, 2.500% Coupon | First Mortgage Bonds
Debt Instrument [Line Items]
Interest Rate	2.50%
Current maturities of long-term debt	$ 500
Duke Energy Carolinas | Debt Maturing March 2023, 3.050% Coupon | First Mortgage Bonds
Debt Instrument [Line Items]
Interest Rate	3.05%
Current maturities of long-term debt	$ 500
Duke Energy Progress
Debt Instrument [Line Items]
Current maturities of long-term debt	$ 568	$ 556
Duke Energy Progress | Debt Maturing May 2022, 2.800%, interest rate | First Mortgage Bonds
Debt Instrument [Line Items]
Interest Rate	2.80%
Current maturities of long-term debt	$ 500

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Debt and Credit Facilities (Narrative) (Details) - USD ($)		1 Months Ended	3 Months Ended
	Mar. 09, 2022	Mar. 31, 2022	Mar. 31, 2022	Mar. 31, 2021
Master Credit Facility
Debt Instrument [Line Items]
Facility size		$ 9,000,000,000	$ 9,000,000,000	$ 8,000,000,000
Master Credit Facility | Term Loan Facility | Duke Energy (Parent)
Debt Instrument [Line Items]
Facility size	$ 1,400,000,000
Extension period	2 years
Master Credit Facility | Term Loan Facility | Progress Energy
Debt Instrument [Line Items]
Amount of debt closed		$ 2,500,000,000
June 2017 Three Year Revolving Credit Facility
Debt Instrument [Line Items]
Facility term			3 years

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Debt and Credit Facilities (Schedule of Line of Credit Facilities) (Details) - Master Credit Facility - USD ($)	Mar. 31, 2022	Mar. 31, 2021
Line of Credit Facility [Line Items]
Facility size	$ 9,000,000,000	$ 8,000,000,000
Commercial paper	(2,819,000,000)
Outstanding letters of credit	(38,000,000)
Tax-exempt bonds	(81,000,000)
Available capacity under the Master Credit Facility	6,062,000,000
Duke Energy Carolinas
Line of Credit Facility [Line Items]
Facility size	1,225,000,000
Commercial paper	(300,000,000)
Outstanding letters of credit	(4,000,000)
Available capacity under the Master Credit Facility	921,000,000
Duke Energy Progress
Line of Credit Facility [Line Items]
Facility size	1,400,000,000
Commercial paper	(150,000,000)
Outstanding letters of credit	(2,000,000)
Available capacity under the Master Credit Facility	1,248,000,000
Duke Energy Florida
Line of Credit Facility [Line Items]
Facility size	900,000,000
Commercial paper	(236,000,000)
Outstanding letters of credit	(7,000,000)
Available capacity under the Master Credit Facility	657,000,000
Duke Energy Ohio
Line of Credit Facility [Line Items]
Facility size	775,000,000
Commercial paper	(86,000,000)
Available capacity under the Master Credit Facility	689,000,000
Duke Energy Indiana
Line of Credit Facility [Line Items]
Facility size	600,000,000
Commercial paper	(150,000,000)
Tax-exempt bonds	(81,000,000)
Available capacity under the Master Credit Facility	369,000,000
Piedmont
Line of Credit Facility [Line Items]
Facility size	800,000,000
Commercial paper	(182,000,000)
Available capacity under the Master Credit Facility	618,000,000
Duke Energy (Parent) | Proceeds loaned to subsidiary registrants
Line of Credit Facility [Line Items]
Commercial paper	(625,000,000)
Duke Energy (Parent) | Duke Energy (Parent)
Line of Credit Facility [Line Items]
Facility size	3,300,000,000
Commercial paper	(1,715,000,000)
Outstanding letters of credit	(25,000,000)
Available capacity under the Master Credit Facility	$ 1,560,000,000

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Goodwill (Rollforward of Goodwill) (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Goodwill [Line Items]
Goodwill balance	$ 19,425	$ 19,425
Accumulated impairment charges	(122)	(122)
Goodwill, adjusted for accumulated impairment charges	19,303	19,303
Electric Utilities and Infrastructure
Goodwill [Line Items]
Goodwill balance	17,379	17,379
Goodwill, adjusted for accumulated impairment charges	17,379	17,379
Gas Utilities and Infrastructure
Goodwill [Line Items]
Goodwill balance	1,924	1,924
Goodwill, adjusted for accumulated impairment charges	1,924	1,924
Commercial Renewables
Goodwill [Line Items]
Goodwill balance	122	122
Accumulated impairment charges	$ (122)	$ (122)

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Goodwill (Narrative) (Details) - USD ($)	Mar. 31, 2022	Dec. 31, 2021
Goodwill [Line Items]
Goodwill	$ 19,303,000,000	$ 19,303,000,000
Accumulated impairment charges	122,000,000	122,000,000
Electric Utilities and Infrastructure
Goodwill [Line Items]
Goodwill	17,379,000,000	17,379,000,000
Gas Utilities and Infrastructure
Goodwill [Line Items]
Goodwill	1,924,000,000	1,924,000,000
Duke Energy Ohio
Goodwill [Line Items]
Goodwill	920,000,000	920,000,000
Accumulated impairment charges	216,000,000	216,000,000
Duke Energy Ohio | Electric Utilities and Infrastructure
Goodwill [Line Items]
Goodwill	596,000,000	596,000,000
Duke Energy Ohio | Gas Utilities and Infrastructure
Goodwill [Line Items]
Goodwill	324,000,000	324,000,000
Progress Energy
Goodwill [Line Items]
Goodwill	3,655,000,000	3,655,000,000
Progress Energy | Electric Utilities and Infrastructure
Goodwill [Line Items]
Accumulated impairment charges	0	0
Piedmont
Goodwill [Line Items]
Goodwill	49,000,000	49,000,000
Piedmont | Gas Utilities and Infrastructure
Goodwill [Line Items]
Accumulated impairment charges	$ 0	$ 0

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Related Party Transactions (Other Revenue and Expense) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Duke Energy Carolinas | Corporate governance and shared service expenses | Affiliated Entity
Related Party Transaction [Line Items]
Related party transaction, expenses from transactions with related party	$ 206	$ 203
Duke Energy Carolinas | Indemnification coverages | Affiliated Entity
Related Party Transaction [Line Items]
Related party transaction, expenses from transactions with related party	7	6
Duke Energy Carolinas | JDA | Duke Energy Progress
Related Party Transaction [Line Items]
Related party transaction, expenses from transactions with related party	94	40
Related party transaction, other revenues from transactions with related party	26	13
Duke Energy Carolinas | Intercompany natural gas purchases and sales | Affiliated Entity
Related Party Transaction [Line Items]
Related party transaction, expenses from transactions with related party	13	14
Progress Energy | Corporate governance and shared service expenses | Affiliated Entity
Related Party Transaction [Line Items]
Related party transaction, expenses from transactions with related party	196	181
Progress Energy | Indemnification coverages | Affiliated Entity
Related Party Transaction [Line Items]
Related party transaction, expenses from transactions with related party	11	10
Progress Energy | JDA | Duke Energy Carolinas
Related Party Transaction [Line Items]
Related party transaction, expenses from transactions with related party	26	13
Related party transaction, other revenues from transactions with related party	94	40
Progress Energy | Intercompany natural gas purchases and sales | Affiliated Entity
Related Party Transaction [Line Items]
Related party transaction, expenses from transactions with related party	19	19
Duke Energy Progress | Corporate governance and shared service expenses | Affiliated Entity
Related Party Transaction [Line Items]
Related party transaction, expenses from transactions with related party	119	105
Duke Energy Progress | Indemnification coverages | Affiliated Entity
Related Party Transaction [Line Items]
Related party transaction, expenses from transactions with related party	5	5
Duke Energy Progress | JDA | Duke Energy Carolinas
Related Party Transaction [Line Items]
Related party transaction, expenses from transactions with related party	26	13
Related party transaction, other revenues from transactions with related party	94	40
Duke Energy Progress | Intercompany natural gas purchases and sales | Affiliated Entity
Related Party Transaction [Line Items]
Related party transaction, expenses from transactions with related party	19	19
Duke Energy Florida | Corporate governance and shared service expenses | Affiliated Entity
Related Party Transaction [Line Items]
Related party transaction, expenses from transactions with related party	77	76
Duke Energy Florida | Indemnification coverages | Affiliated Entity
Related Party Transaction [Line Items]
Related party transaction, expenses from transactions with related party	6	5
Duke Energy Ohio | Corporate governance and shared service expenses | Affiliated Entity
Related Party Transaction [Line Items]
Related party transaction, expenses from transactions with related party	82	79
Duke Energy Ohio | Indemnification coverages | Affiliated Entity
Related Party Transaction [Line Items]
Related party transaction, expenses from transactions with related party	1	1
Duke Energy Indiana | Corporate governance and shared service expenses | Affiliated Entity
Related Party Transaction [Line Items]
Related party transaction, expenses from transactions with related party	124	113
Duke Energy Indiana | Indemnification coverages | Affiliated Entity
Related Party Transaction [Line Items]
Related party transaction, expenses from transactions with related party	2	2
Piedmont | Corporate governance and shared service expenses | Affiliated Entity
Related Party Transaction [Line Items]
Related party transaction, expenses from transactions with related party	35	33
Piedmont | Indemnification coverages | Affiliated Entity
Related Party Transaction [Line Items]
Related party transaction, expenses from transactions with related party	1	1
Piedmont | Intercompany natural gas purchases and sales | Affiliated Entity
Related Party Transaction [Line Items]
Related party transaction, other revenues from transactions with related party	32	33
Piedmont | Natural gas storage and transportation costs | Affiliated Entity
Related Party Transaction [Line Items]
Related party transaction, expenses from transactions with related party	$ 6	$ 6

XML

Related Party Transactions (Intercompany Income Taxes) (Details) - Affiliated Entity - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Duke Energy Carolinas
Related Party Transaction [Line Items]
Intercompany income tax receivable	$ 20
Intercompany income tax payable		$ 62
Progress Energy
Related Party Transaction [Line Items]
Intercompany income tax receivable	49
Duke Energy Progress
Related Party Transaction [Line Items]
Intercompany income tax payable	15	84
Duke Energy Florida
Related Party Transaction [Line Items]
Intercompany income tax receivable	9	40
Duke Energy Ohio
Related Party Transaction [Line Items]
Intercompany income tax receivable	5	19
Duke Energy Indiana
Related Party Transaction [Line Items]
Intercompany income tax payable	44	10
Piedmont
Related Party Transaction [Line Items]
Intercompany income tax payable	$ 45	$ 27

XML

Derivatives and Hedging (Notional Amounts of Derivative Instruments) (Details) Mcf in Millions, $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2022 USD ($) GWh Mcf	Dec. 31, 2021 USD ($) GWh Mcf
Interest Rate Contracts
Derivative [Line Items]
Notional amount	$ 3,490	$ 3,592
Commodity contracts | Cash flow hedges
Derivative [Line Items]
Notional amount, energy measure (in gigawatt-hours) | GWh	9,763	9,975
Commodity contracts | Electricity (GWh)(a)
Derivative [Line Items]
Notional amount, energy measure (in gigawatt-hours) | GWh	16,176	22,344
Commodity contracts | Natural gas (millions of dekatherms)
Derivative [Line Items]
Notional amount, volume (in millions of dekatherms) | Mcf	860	823
Designated contracts | Interest Rate Contracts
Derivative [Line Items]
Notional amount	$ 2,913	$ 2,415
Designated contracts | Interest Rate Contracts | VIE primary beneficiary
Derivative [Line Items]
Notional amount	663	665
Undesignated contracts | Interest Rate Contracts
Derivative [Line Items]
Notional amount	577	1,177
Duke Energy Carolinas | Interest Rate Contracts
Derivative [Line Items]
Notional amount	$ 250	$ 350
Duke Energy Carolinas | Commodity contracts | Natural gas (millions of dekatherms)
Derivative [Line Items]
Notional amount, volume (in millions of dekatherms) | Mcf	284	264
Duke Energy Carolinas | Undesignated contracts | Interest Rate Contracts
Derivative [Line Items]
Notional amount	$ 250	$ 350
Progress Energy | Interest Rate Contracts
Derivative [Line Items]
Notional amount		$ 500
Progress Energy | Commodity contracts | Natural gas (millions of dekatherms)
Derivative [Line Items]
Notional amount, volume (in millions of dekatherms) | Mcf	243	215
Progress Energy | Undesignated contracts | Interest Rate Contracts
Derivative [Line Items]
Notional amount		$ 500
Duke Energy Progress | Interest Rate Contracts
Derivative [Line Items]
Notional amount		$ 500
Duke Energy Progress | Commodity contracts | Natural gas (millions of dekatherms)
Derivative [Line Items]
Notional amount, volume (in millions of dekatherms) | Mcf	243	215
Duke Energy Progress | Undesignated contracts | Interest Rate Contracts
Derivative [Line Items]
Notional amount		$ 500
Duke Energy Indiana | Interest Rate Contracts
Derivative [Line Items]
Notional amount	$ 300	$ 300
Duke Energy Indiana | Commodity contracts | Electricity (GWh)(a)
Derivative [Line Items]
Notional amount, energy measure (in gigawatt-hours) | GWh	4,501	10,688
Duke Energy Indiana | Commodity contracts | Natural gas (millions of dekatherms)
Derivative [Line Items]
Notional amount, volume (in millions of dekatherms) | Mcf	7	8
Duke Energy Indiana | Undesignated contracts | Interest Rate Contracts
Derivative [Line Items]
Notional amount	$ 300	$ 300
Duke Energy Ohio | Interest Rate Contracts
Derivative [Line Items]
Notional amount	$ 27	$ 27
Duke Energy Ohio | Commodity contracts | Electricity (GWh)(a)
Derivative [Line Items]
Notional amount, energy measure (in gigawatt-hours) | GWh	791	1,681
Duke Energy Ohio | Undesignated contracts | Interest Rate Contracts
Derivative [Line Items]
Notional amount	$ 27	$ 27
Piedmont | Commodity contracts | Natural gas (millions of dekatherms)
Derivative [Line Items]
Notional amount, volume (in millions of dekatherms) | Mcf	326	336

XML

Derivatives and Hedging (Location and Fair Value Amounts of Derivatives Reflected in the Condensed Consolidated Balance Sheets) (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Asset)	$ 1,108	$ 320
Location and fair value amounts of derivatives (Liability)	433	472
Current assets
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Asset)	767	204
Noncurrent assets
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Asset)	341	116
Current liabilities
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Liability)	115	184
Noncurrent liabilities
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Liability)	318	288
Commodity Contracts
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Asset)	953	312
Location and fair value amounts of derivatives (Liability)	419	348
Interest Rate Contracts
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Asset)	155	8
Location and fair value amounts of derivatives (Liability)	14	124
Not Designated as Hedging Instruments | Commodity Contracts | Current assets
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Asset)	673	199
Not Designated as Hedging Instruments | Commodity Contracts | Noncurrent assets
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Asset)	280	113
Not Designated as Hedging Instruments | Commodity Contracts | Current liabilities
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Liability)	61	72
Not Designated as Hedging Instruments | Commodity Contracts | Noncurrent liabilities
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Liability)	149	132
Not Designated as Hedging Instruments | Interest Rate Contracts | Current assets
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Asset)		2
Not Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent assets
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Asset)	24
Not Designated as Hedging Instruments | Interest Rate Contracts | Current liabilities
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Liability)	1	10
Not Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent liabilities
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Liability)	2	18
Designated as Hedging Instruments | Commodity Contracts | Current liabilities
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Liability)	49	27
Designated as Hedging Instruments | Commodity Contracts | Noncurrent liabilities
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Liability)	160	117
Designated as Hedging Instruments | Interest Rate Contracts | Current assets
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Asset)	94
Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent assets
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Asset)	37
Designated as Hedging Instruments | Interest Rate Contracts | Current liabilities
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Asset)		3
Location and fair value amounts of derivatives (Liability)	4	75
Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent liabilities
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Asset)		3
Location and fair value amounts of derivatives (Liability)	7	21
Duke Energy Carolinas
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Asset)	493	162
Location and fair value amounts of derivatives (Liability)	37	35
Duke Energy Carolinas | Current assets
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Asset)	335	99
Duke Energy Carolinas | Noncurrent assets
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Asset)	158	63
Duke Energy Carolinas | Current liabilities
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Liability)	36	26
Duke Energy Carolinas | Noncurrent liabilities
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Liability)	1	9
Duke Energy Carolinas | Commodity Contracts
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Asset)	486	162
Location and fair value amounts of derivatives (Liability)	37	27
Duke Energy Carolinas | Interest Rate Contracts
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Asset)	7
Location and fair value amounts of derivatives (Liability)		8
Duke Energy Carolinas | Not Designated as Hedging Instruments | Commodity Contracts | Current assets
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Asset)	335	99
Duke Energy Carolinas | Not Designated as Hedging Instruments | Commodity Contracts | Noncurrent assets
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Asset)	151	63
Duke Energy Carolinas | Not Designated as Hedging Instruments | Commodity Contracts | Current liabilities
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Liability)	36	18
Duke Energy Carolinas | Not Designated as Hedging Instruments | Commodity Contracts | Noncurrent liabilities
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Liability)	1	9
Duke Energy Carolinas | Not Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent assets
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Asset)	7
Duke Energy Carolinas | Not Designated as Hedging Instruments | Interest Rate Contracts | Current liabilities
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Liability)		8
Progress Energy
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Asset)	425	124
Location and fair value amounts of derivatives (Liability)		24
Progress Energy | Current assets
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Asset)	295	74
Progress Energy | Noncurrent assets
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Asset)	130	50
Progress Energy | Current liabilities
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Liability)		19
Progress Energy | Noncurrent liabilities
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Liability)		5
Progress Energy | Commodity Contracts
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Asset)	425	122
Location and fair value amounts of derivatives (Liability)		24
Progress Energy | Interest Rate Contracts
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Asset)		2
Progress Energy | Not Designated as Hedging Instruments | Commodity Contracts | Current assets
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Asset)	295	72
Progress Energy | Not Designated as Hedging Instruments | Commodity Contracts | Noncurrent assets
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Asset)	130	50
Progress Energy | Not Designated as Hedging Instruments | Commodity Contracts | Current liabilities
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Liability)		19
Progress Energy | Not Designated as Hedging Instruments | Commodity Contracts | Noncurrent liabilities
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Liability)		5
Progress Energy | Not Designated as Hedging Instruments | Interest Rate Contracts | Current assets
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Asset)		2
Duke Energy Progress
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Asset)	385	124
Location and fair value amounts of derivatives (Liability)		10
Duke Energy Progress | Current assets
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Asset)	255	74
Duke Energy Progress | Noncurrent assets
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Asset)	130	50
Duke Energy Progress | Current liabilities
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Liability)		5
Duke Energy Progress | Noncurrent liabilities
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Liability)		5
Duke Energy Progress | Commodity Contracts
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Asset)	385	122
Location and fair value amounts of derivatives (Liability)		10
Duke Energy Progress | Interest Rate Contracts
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Asset)		2
Duke Energy Progress | Not Designated as Hedging Instruments | Commodity Contracts | Current assets
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Asset)	255	72
Duke Energy Progress | Not Designated as Hedging Instruments | Commodity Contracts | Noncurrent assets
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Asset)	130	50
Duke Energy Progress | Not Designated as Hedging Instruments | Commodity Contracts | Current liabilities
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Liability)		5
Duke Energy Progress | Not Designated as Hedging Instruments | Commodity Contracts | Noncurrent liabilities
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Liability)		5
Duke Energy Progress | Not Designated as Hedging Instruments | Interest Rate Contracts | Current assets
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Asset)		2
Duke Energy Florida
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Asset)	40
Location and fair value amounts of derivatives (Liability)		14
Duke Energy Florida | Current assets
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Asset)	40
Duke Energy Florida | Current liabilities
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Liability)		14
Duke Energy Florida | Commodity Contracts
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Asset)	40
Location and fair value amounts of derivatives (Liability)		14
Duke Energy Florida | Not Designated as Hedging Instruments | Commodity Contracts | Current assets
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Asset)	40
Duke Energy Florida | Not Designated as Hedging Instruments | Commodity Contracts | Current liabilities
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Liability)		14
Duke Energy Ohio
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Asset)		2
Location and fair value amounts of derivatives (Liability)	3	5
Duke Energy Ohio | Current assets
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Asset)		2
Duke Energy Ohio | Current liabilities
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Liability)	1	1
Duke Energy Ohio | Noncurrent liabilities
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Liability)	2	4
Duke Energy Ohio | Commodity Contracts
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Asset)		2
Duke Energy Ohio | Interest Rate Contracts
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Liability)	3	5
Duke Energy Ohio | Not Designated as Hedging Instruments | Commodity Contracts | Current assets
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Asset)		2
Duke Energy Ohio | Not Designated as Hedging Instruments | Interest Rate Contracts | Current liabilities
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Liability)	1	1
Duke Energy Ohio | Not Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent liabilities
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Liability)	2	4
Duke Energy Indiana
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Asset)	45	23
Location and fair value amounts of derivatives (Liability)		27
Duke Energy Indiana | Current assets
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Asset)	28	23
Duke Energy Indiana | Noncurrent assets
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Asset)	17
Duke Energy Indiana | Current liabilities
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Liability)		13
Duke Energy Indiana | Noncurrent liabilities
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Liability)		14
Duke Energy Indiana | Commodity Contracts
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Asset)	28	23
Location and fair value amounts of derivatives (Liability)		13
Duke Energy Indiana | Interest Rate Contracts
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Asset)	17
Location and fair value amounts of derivatives (Liability)		14
Duke Energy Indiana | Not Designated as Hedging Instruments | Commodity Contracts | Current assets
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Asset)	28	23
Duke Energy Indiana | Not Designated as Hedging Instruments | Commodity Contracts | Current liabilities
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Liability)		13
Duke Energy Indiana | Not Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent assets
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Asset)	17
Duke Energy Indiana | Not Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent liabilities
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Liability)		14
Piedmont
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Asset)	7	3
Location and fair value amounts of derivatives (Liability)	173	139
Piedmont | Current assets
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Asset)	7	3
Piedmont | Current liabilities
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Liability)	24	21
Piedmont | Noncurrent liabilities
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Liability)	149	118
Piedmont | Commodity Contracts
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Asset)	7	3
Location and fair value amounts of derivatives (Liability)	173	139
Piedmont | Not Designated as Hedging Instruments | Commodity Contracts | Current assets
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Asset)	7	3
Piedmont | Not Designated as Hedging Instruments | Commodity Contracts | Current liabilities
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Liability)	24	21
Piedmont | Not Designated as Hedging Instruments | Commodity Contracts | Noncurrent liabilities
Derivatives, Fair Value [Line Items]
Location and fair value amounts of derivatives (Liability)	$ 149	$ 118

XML

Derivatives and Hedging (Schedule of Offsetting Assets) (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	$ 1,108	$ 320
Net amounts presented in Current Assets: Other	1,108	320
Current assets
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	767	204
Gross amounts offset	(255)	(25)
Net amounts presented in Current Assets: Other	512	179
Noncurrent assets
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	341	116
Gross amounts offset	(115)	(23)
Net amounts presented in Current Assets: Other	226	93
Duke Energy Carolinas
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	493	162
Net amounts presented in Current Assets: Other	493	162
Duke Energy Carolinas | Current assets
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	335	99
Gross amounts offset	(149)	(16)
Net amounts presented in Current Assets: Other	186	83
Duke Energy Carolinas | Noncurrent assets
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	158	63
Gross amounts offset	(64)	(15)
Net amounts presented in Current Assets: Other	94	48
Progress Energy
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	425	124
Net amounts presented in Current Assets: Other	425	124
Progress Energy | Current assets
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	295	74
Gross amounts offset	(106)	(9)
Net amounts presented in Current Assets: Other	189	65
Progress Energy | Noncurrent assets
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	130	50
Gross amounts offset	(51)	(8)
Net amounts presented in Current Assets: Other	79	42
Duke Energy Progress
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	385	124
Net amounts presented in Current Assets: Other	385	124
Duke Energy Progress | Current assets
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	255	74
Gross amounts offset	(106)	(9)
Net amounts presented in Current Assets: Other	149	65
Duke Energy Progress | Noncurrent assets
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	130	50
Gross amounts offset	(51)	(8)
Net amounts presented in Current Assets: Other	79	42
Duke Energy Florida
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	40
Net amounts presented in Current Assets: Other	40
Duke Energy Florida | Current assets
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	40
Net amounts presented in Current Assets: Other	40
Duke Energy Ohio
Offsetting Derivative Assets [Abstract]
Gross amounts recognized		2
Duke Energy Ohio | Current assets
Offsetting Derivative Assets [Abstract]
Gross amounts recognized		2
Net amounts presented in Current Assets: Other		2
Duke Energy Indiana
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	45	23
Net amounts presented in Current Assets: Other	45	23
Duke Energy Indiana | Current assets
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	28	23
Net amounts presented in Current Assets: Other	28	23
Duke Energy Indiana | Noncurrent assets
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	17
Net amounts presented in Current Assets: Other	17
Piedmont
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	7	3
Net amounts presented in Current Assets: Other	7	3
Piedmont | Current assets
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	7	3
Net amounts presented in Current Assets: Other	$ 7	$ 3

XML

Derivatives and Hedging (Schedule of Offsetting Liabilities) (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Offsetting Derivative Liabilities [Abstract]
Gross amounts recognized	$ 433	$ 472
Net amounts presented in Current Liabilities: Other	433	472
Current liabilities
Offsetting Derivative Liabilities [Abstract]
Gross amounts recognized	115	184
Gross amounts offset		(11)
Net amounts presented in Current Liabilities: Other	115	173
Noncurrent liabilities
Offsetting Derivative Liabilities [Abstract]
Gross amounts recognized	318	288
Gross amounts offset		(12)
Net amounts presented in Current Liabilities: Other	318	276
Duke Energy Carolinas
Offsetting Derivative Liabilities [Abstract]
Gross amounts recognized	37	35
Net amounts presented in Current Liabilities: Other	37	35
Duke Energy Carolinas | Current liabilities
Offsetting Derivative Liabilities [Abstract]
Gross amounts recognized	36	26
Gross amounts offset		(6)
Net amounts presented in Current Liabilities: Other	36	20
Duke Energy Carolinas | Noncurrent liabilities
Offsetting Derivative Liabilities [Abstract]
Gross amounts recognized	1	9
Gross amounts offset		(8)
Net amounts presented in Current Liabilities: Other	1	1
Progress Energy
Offsetting Derivative Liabilities [Abstract]
Gross amounts recognized		24
Net amounts presented in Current Liabilities: Other		24
Progress Energy | Current liabilities
Offsetting Derivative Liabilities [Abstract]
Gross amounts recognized		19
Gross amounts offset		(5)
Net amounts presented in Current Liabilities: Other		14
Progress Energy | Noncurrent liabilities
Offsetting Derivative Liabilities [Abstract]
Gross amounts recognized		5
Gross amounts offset		(5)
Duke Energy Progress
Offsetting Derivative Liabilities [Abstract]
Gross amounts recognized		10
Net amounts presented in Current Liabilities: Other		10
Duke Energy Progress | Current liabilities
Offsetting Derivative Liabilities [Abstract]
Gross amounts recognized		5
Gross amounts offset		(5)
Duke Energy Progress | Noncurrent liabilities
Offsetting Derivative Liabilities [Abstract]
Gross amounts recognized		5
Gross amounts offset		(5)
Duke Energy Florida
Offsetting Derivative Liabilities [Abstract]
Gross amounts recognized		14
Net amounts presented in Current Liabilities: Other		14
Duke Energy Florida | Current liabilities
Offsetting Derivative Liabilities [Abstract]
Gross amounts recognized		14
Net amounts presented in Current Liabilities: Other		14
Duke Energy Ohio
Offsetting Derivative Liabilities [Abstract]
Gross amounts recognized	3	5
Duke Energy Ohio | Current liabilities
Offsetting Derivative Liabilities [Abstract]
Gross amounts recognized	1	1
Net amounts presented in Current Liabilities: Other	1	1
Duke Energy Ohio | Noncurrent liabilities
Offsetting Derivative Liabilities [Abstract]
Gross amounts recognized	2	4
Net amounts presented in Current Liabilities: Other	2	4
Duke Energy Indiana
Offsetting Derivative Liabilities [Abstract]
Gross amounts recognized		27
Net amounts presented in Current Liabilities: Other		27
Duke Energy Indiana | Current liabilities
Offsetting Derivative Liabilities [Abstract]
Gross amounts recognized		13
Net amounts presented in Current Liabilities: Other		13
Duke Energy Indiana | Noncurrent liabilities
Offsetting Derivative Liabilities [Abstract]
Gross amounts recognized		14
Net amounts presented in Current Liabilities: Other		14
Piedmont
Offsetting Derivative Liabilities [Abstract]
Gross amounts recognized	173	139
Net amounts presented in Current Liabilities: Other	173	139
Piedmont | Current liabilities
Offsetting Derivative Liabilities [Abstract]
Gross amounts recognized	24	21
Net amounts presented in Current Liabilities: Other	24	21
Piedmont | Noncurrent liabilities
Offsetting Derivative Liabilities [Abstract]
Gross amounts recognized	149	118
Net amounts presented in Current Liabilities: Other	$ 149	$ 118

XML

Investments in Debt and Equity Securities (Estimated Fair Value of Investments in Debt and Equity Securities) (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Debt Securities, Available-for-sale
Estimated Fair Value	$ 3,133
Investments, Accumulated Gross Unrealized Gains (Losses) [Abstract]
Unrealized Holding Gains	4,539	$ 5,033
Unrealized Holding Losses	202	66
Estimated Fair Value	10,371	10,893
Duke Energy Carolinas
Debt Securities, Available-for-sale
Estimated Fair Value	1,419
Progress Energy
Debt Securities, Available-for-sale
Estimated Fair Value	1,452
Investments, Accumulated Gross Unrealized Gains (Losses) [Abstract]
Unrealized Holding Gains	1,866	2,062
Unrealized Holding Losses	92	36
Estimated Fair Value	4,428	4,688
Duke Energy Progress
Debt Securities, Available-for-sale
Estimated Fair Value	1,031
Investments, Accumulated Gross Unrealized Gains (Losses) [Abstract]
Unrealized Holding Gains	1,768	1,957
Unrealized Holding Losses	74	29
Estimated Fair Value	3,885	4,105
Duke Energy Florida
Debt Securities, Available-for-sale
Estimated Fair Value	421
Investments, Accumulated Gross Unrealized Gains (Losses) [Abstract]
Unrealized Holding Gains	98	105
Unrealized Holding Losses	18	7
Estimated Fair Value	542	582
Duke Energy Indiana
Debt Securities, Available-for-sale
Estimated Fair Value	63
NDTF
Available-for-sale Securities
Cash and cash equivalents	128	160
Equity Securities, FV-NI
Equity Securities, FV-NI, Accumulated Unrealized Gain	4,486	4,905
Equity Securities, FV-NI, Accumulated Unrealized Loss	62	43
Equity securities, FV-NI	6,853	7,350
Debt Securities, Available-for-sale
Estimated Fair Value	2,845	2,891
Investments, Accumulated Gross Unrealized Gains (Losses) [Abstract]
Unrealized Holding Gains	4,507	4,992
Unrealized Holding Losses	185	63
Estimated Fair Value	9,826	10,401
NDTF | Duke Energy Carolinas
Available-for-sale Securities
Cash and cash equivalents	60	53
Equity Securities, FV-NI
Equity Securities, FV-NI, Accumulated Unrealized Gain	2,632	2,887
Equity Securities, FV-NI, Accumulated Unrealized Loss	30	19
Equity securities, FV-NI	3,962	4,265
Debt Securities, Available-for-sale
Estimated Fair Value	1,419	1,441
Investments, Accumulated Gross Unrealized Gains (Losses) [Abstract]
Unrealized Holding Gains	2,642	2,932
Unrealized Holding Losses	93	27
Estimated Fair Value	5,441	5,759
NDTF | Progress Energy
Available-for-sale Securities
Cash and cash equivalents	68	107
Equity Securities, FV-NI
Equity Securities, FV-NI, Accumulated Unrealized Gain	1,854	2,018
Equity Securities, FV-NI, Accumulated Unrealized Loss	32	24
Equity securities, FV-NI	2,891	3,085
Debt Securities, Available-for-sale
Estimated Fair Value	1,426	1,450
Investments, Accumulated Gross Unrealized Gains (Losses) [Abstract]
Unrealized Holding Gains	1,865	2,060
Unrealized Holding Losses	92	36
Estimated Fair Value	4,385	4,642
NDTF | Duke Energy Progress
Available-for-sale Securities
Cash and cash equivalents	58	94
Equity Securities, FV-NI
Equity Securities, FV-NI, Accumulated Unrealized Gain	1,757	1,915
Equity Securities, FV-NI, Accumulated Unrealized Loss	32	23
Equity securities, FV-NI	2,782	2,970
Debt Securities, Available-for-sale
Estimated Fair Value	1,031	1,025
Investments, Accumulated Gross Unrealized Gains (Losses) [Abstract]
Unrealized Holding Gains	1,768	1,957
Unrealized Holding Losses	74	29
Estimated Fair Value	3,871	4,089
NDTF | Duke Energy Florida
Available-for-sale Securities
Cash and cash equivalents	10	13
Equity Securities, FV-NI
Equity Securities, FV-NI, Accumulated Unrealized Gain	97	103
Equity Securities, FV-NI, Accumulated Unrealized Loss		1
Equity securities, FV-NI	109	115
Debt Securities, Available-for-sale
Estimated Fair Value	395	425
Investments, Accumulated Gross Unrealized Gains (Losses) [Abstract]
Unrealized Holding Gains	97	103
Unrealized Holding Losses	18	7
Estimated Fair Value	514	553
Other Investments
Available-for-sale Securities
Cash and cash equivalents	110	36
Equity Securities, FV-NI
Equity Securities, FV-NI, Accumulated Unrealized Gain	31	36
Equity Securities, FV-NI, Accumulated Unrealized Loss	4
Equity securities, FV-NI	147	156
Debt Securities, Available-for-sale
Estimated Fair Value	288	300
Investments, Accumulated Gross Unrealized Gains (Losses) [Abstract]
Unrealized Holding Gains	32	41
Unrealized Holding Losses	17	3
Estimated Fair Value	545	492
Other Investments | Progress Energy
Available-for-sale Securities
Cash and cash equivalents	17	20
Debt Securities, Available-for-sale
Estimated Fair Value	26	26
Investments, Accumulated Gross Unrealized Gains (Losses) [Abstract]
Unrealized Holding Gains	1	2
Estimated Fair Value	43	46
Other Investments | Duke Energy Progress
Available-for-sale Securities
Cash and cash equivalents	14	16
Investments, Accumulated Gross Unrealized Gains (Losses) [Abstract]
Estimated Fair Value	14	16
Other Investments | Duke Energy Florida
Available-for-sale Securities
Cash and cash equivalents	2	3
Debt Securities, Available-for-sale
Estimated Fair Value	26	26
Investments, Accumulated Gross Unrealized Gains (Losses) [Abstract]
Unrealized Holding Gains	1	2
Estimated Fair Value	28	29
Other Investments | Duke Energy Indiana
Available-for-sale Securities
Cash and cash equivalents	1
Equity Securities, FV-NI
Equity Securities, FV-NI, Accumulated Unrealized Gain	4	6
Equity Securities, FV-NI, Accumulated Unrealized Loss	4
Equity securities, FV-NI	91	97
Debt Securities, Available-for-sale
Estimated Fair Value	63	64
Investments, Accumulated Gross Unrealized Gains (Losses) [Abstract]
Unrealized Holding Gains	4	7
Unrealized Holding Losses	6	1
Estimated Fair Value	155	161
Corporate debt securities | NDTF
Debt Securities, Available-for-sale
Gross Unrealized Holding Gains	9	39
Gross Unrealized Holding Losses	43	6
Estimated Fair Value	786	829
Corporate debt securities | NDTF | Duke Energy Carolinas
Debt Securities, Available-for-sale
Gross Unrealized Holding Gains	6	24
Gross Unrealized Holding Losses	30	4
Estimated Fair Value	503	506
Corporate debt securities | NDTF | Progress Energy
Debt Securities, Available-for-sale
Gross Unrealized Holding Gains	3	15
Gross Unrealized Holding Losses	13	2
Estimated Fair Value	283	323
Corporate debt securities | NDTF | Duke Energy Progress
Debt Securities, Available-for-sale
Gross Unrealized Holding Gains	3	15
Gross Unrealized Holding Losses	12	2
Estimated Fair Value	255	282
Corporate debt securities | NDTF | Duke Energy Florida
Debt Securities, Available-for-sale
Gross Unrealized Holding Losses	1
Estimated Fair Value	28	41
Corporate debt securities | Other Investments
Debt Securities, Available-for-sale
Gross Unrealized Holding Gains		2
Gross Unrealized Holding Losses	7	1
Estimated Fair Value	124	119
Corporate debt securities | Other Investments | Duke Energy Indiana
Debt Securities, Available-for-sale
Estimated Fair Value	8	6
Municipal bonds | NDTF
Debt Securities, Available-for-sale
Gross Unrealized Holding Gains	2	14
Gross Unrealized Holding Losses	16	1
Estimated Fair Value	321	314
Municipal bonds | NDTF | Duke Energy Carolinas
Debt Securities, Available-for-sale
Gross Unrealized Holding Gains		2
Gross Unrealized Holding Losses	5
Estimated Fair Value	52	48
Municipal bonds | NDTF | Progress Energy
Debt Securities, Available-for-sale
Gross Unrealized Holding Gains	2	12
Gross Unrealized Holding Losses	11	1
Estimated Fair Value	269	266
Municipal bonds | NDTF | Duke Energy Progress
Debt Securities, Available-for-sale
Gross Unrealized Holding Gains	2	12
Gross Unrealized Holding Losses	11	1
Estimated Fair Value	269	266
Municipal bonds | Other Investments
Debt Securities, Available-for-sale
Gross Unrealized Holding Gains	1	3
Gross Unrealized Holding Losses	2	1
Estimated Fair Value	83	80
Municipal bonds | Other Investments | Progress Energy
Debt Securities, Available-for-sale
Gross Unrealized Holding Gains	1	2
Estimated Fair Value	26	26
Municipal bonds | Other Investments | Duke Energy Florida
Debt Securities, Available-for-sale
Gross Unrealized Holding Gains	1	2
Estimated Fair Value	26	26
Municipal bonds | Other Investments | Duke Energy Indiana
Debt Securities, Available-for-sale
Gross Unrealized Holding Gains		1
Gross Unrealized Holding Losses	2	1
Estimated Fair Value	49	46
U.S. government bonds | NDTF
Debt Securities, Available-for-sale
Gross Unrealized Holding Gains	10	31
Gross Unrealized Holding Losses	57	12
Estimated Fair Value	1,561	1,568
U.S. government bonds | NDTF | Duke Energy Carolinas
Debt Securities, Available-for-sale
Gross Unrealized Holding Gains	4	16
Gross Unrealized Holding Losses	21	3
Estimated Fair Value	692	712
U.S. government bonds | NDTF | Progress Energy
Debt Securities, Available-for-sale
Gross Unrealized Holding Gains	6	15
Gross Unrealized Holding Losses	36	9
Estimated Fair Value	869	856
U.S. government bonds | NDTF | Duke Energy Progress
Debt Securities, Available-for-sale
Gross Unrealized Holding Gains	6	15
Gross Unrealized Holding Losses	19	3
Estimated Fair Value	502	472
U.S. government bonds | NDTF | Duke Energy Florida
Debt Securities, Available-for-sale
Gross Unrealized Holding Losses	17	6
Estimated Fair Value	367	384
U.S. government bonds | Other Investments
Debt Securities, Available-for-sale
Gross Unrealized Holding Losses	2
Estimated Fair Value	45	56
U.S. government bonds | Other Investments | Duke Energy Indiana
Debt Securities, Available-for-sale
Estimated Fair Value	6	12
Other debt securities | NDTF
Debt Securities, Available-for-sale
Gross Unrealized Holding Gains		3
Gross Unrealized Holding Losses	7	1
Estimated Fair Value	177	180
Other debt securities | NDTF | Duke Energy Carolinas
Debt Securities, Available-for-sale
Gross Unrealized Holding Gains		3
Gross Unrealized Holding Losses	7	1
Estimated Fair Value	172	175
Other debt securities | NDTF | Progress Energy
Debt Securities, Available-for-sale
Estimated Fair Value	5	5
Other debt securities | NDTF | Duke Energy Progress
Debt Securities, Available-for-sale
Estimated Fair Value	5	5
Other debt securities | Other Investments
Debt Securities, Available-for-sale
Gross Unrealized Holding Losses	2	1
Estimated Fair Value	$ 36	$ 45

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Investments in Debt and Equity Securities (Realized Gains and Losses) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
FV-NI:
Realized gains	$ 111	$ 140
Realized losses	85	23
AFS:
Realized gains	4	18
Realized losses	23	13
Duke Energy Carolinas
FV-NI:
Realized gains	75	128
Realized losses	49	16
AFS:
Realized gains	3	13
Realized losses	16	9
Progress Energy
FV-NI:
Realized gains	36	12
Realized losses	36	7
AFS:
Realized gains	1	4
Realized losses	6	3
Duke Energy Progress
FV-NI:
Realized gains	36	12
Realized losses	35	7
AFS:
Realized gains	1	4
Realized losses	$ 5	$ 3

XML

Investments in Debt and Equity Securities (Maturities) (Details) $ in Millions	Mar. 31, 2022 USD ($)
Debt Securities, Available-for-sale [Line Items]
Due in one year or less	$ 162
Due after one through five years	969
Due after five through 10 years	536
Due after 10 years	1,466
Total	3,133
Duke Energy Carolinas
Debt Securities, Available-for-sale [Line Items]
Due in one year or less	7
Due after one through five years	367
Due after five through 10 years	235
Due after 10 years	810
Total	1,419
Progress Energy
Debt Securities, Available-for-sale [Line Items]
Due in one year or less	139
Due after one through five years	528
Due after five through 10 years	228
Due after 10 years	557
Total	1,452
Duke Energy Progress
Debt Securities, Available-for-sale [Line Items]
Due in one year or less	32
Due after one through five years	270
Due after five through 10 years	212
Due after 10 years	517
Total	1,031
Duke Energy Florida
Debt Securities, Available-for-sale [Line Items]
Due in one year or less	107
Due after one through five years	258
Due after five through 10 years	16
Due after 10 years	40
Total	421
Duke Energy Indiana
Debt Securities, Available-for-sale [Line Items]
Due in one year or less	8
Due after one through five years	24
Due after five through 10 years	6
Due after 10 years	25
Total	$ 63

XML

Fair Value Measurements (Fair Value Measurement Amounts for Assets and Liabilities) (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities, available-for-sale	$ 3,133
Derivative assets	1,108	$ 320
Total assets	11,479	11,213
Derivative liabilities	(433)	(472)
Net assets (liabilities)	11,046	10,741
Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets	27	3
Total assets	8,204	8,667
Derivative liabilities		(13)
Net assets (liabilities)	8,204	8,654
Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets	1,071	293
Total assets	3,218	2,472
Derivative liabilities	(224)	(314)
Net assets (liabilities)	2,994	2,158
Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets	10	24
Total assets	10	24
Derivative liabilities	(209)	(145)
Net assets (liabilities)	(199)	(121)
Not Categorized
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total assets	47	50
Net assets (liabilities)	47	50
NDTF
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	128	160
Equity securities, FV-NI	6,853	7,350
Debt securities, available-for-sale	2,845	2,891
NDTF | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	128	160
Debt securities, available-for-sale	947	967
NDTF | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities, available-for-sale	1,898	1,924
NDTF equity securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Equity securities, FV-NI	6,853	7,350
NDTF equity securities | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Equity securities, FV-NI	6,806	7,300
NDTF equity securities | Not Categorized
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Equity securities, FV-NI	47	50
Other Investments
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	110	36
Equity securities, FV-NI	147	156
Debt securities, available-for-sale	288	300
Other Investments | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	110	36
Equity securities, FV-NI	147	156
Debt securities, available-for-sale	39	45
Other Investments | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities, available-for-sale	249	255
Duke Energy Carolinas
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities, available-for-sale	1,419
Derivative assets	493	162
Total assets	5,934	5,921
Derivative liabilities	(37)	(35)
Net assets (liabilities)	5,897	5,886
Duke Energy Carolinas | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total assets	4,324	4,607
Net assets (liabilities)	4,324	4,607
Duke Energy Carolinas | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets	493	162
Total assets	1,563	1,264
Derivative liabilities	(37)	(35)
Net assets (liabilities)	1,526	1,229
Duke Energy Carolinas | Not Categorized
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total assets	47	50
Net assets (liabilities)	47	50
Duke Energy Carolinas | NDTF
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	60	53
Equity securities, FV-NI	3,962	4,265
Debt securities, available-for-sale	1,419	1,441
Duke Energy Carolinas | NDTF | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	60	53
Debt securities, available-for-sale	349	339
Duke Energy Carolinas | NDTF | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities, available-for-sale	1,070	1,102
Duke Energy Carolinas | NDTF equity securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Equity securities, FV-NI	3,962	4,265
Duke Energy Carolinas | NDTF equity securities | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Equity securities, FV-NI	3,915	4,215
Duke Energy Carolinas | NDTF equity securities | Not Categorized
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Equity securities, FV-NI	47	50
Progress Energy
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities, available-for-sale	1,452
Derivative assets	425	124
Total assets	4,853	4,812
Derivative liabilities		(24)
Net assets (liabilities)	4,853	4,788
Progress Energy | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets	2
Total assets	3,576	3,840
Net assets (liabilities)	3,576	3,840
Progress Energy | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets	423	124
Total assets	1,277	972
Derivative liabilities		(24)
Net assets (liabilities)	1,277	948
Progress Energy | NDTF
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	68	107
Equity securities, FV-NI	2,891	3,085
Debt securities, available-for-sale	1,426	1,450
Progress Energy | NDTF | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	68	107
Debt securities, available-for-sale	598	628
Progress Energy | NDTF | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities, available-for-sale	828	822
Progress Energy | NDTF equity securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Equity securities, FV-NI	2,891	3,085
Progress Energy | NDTF equity securities | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Equity securities, FV-NI	2,891	3,085
Progress Energy | Other Investments
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	17	20
Debt securities, available-for-sale	26	26
Progress Energy | Other Investments | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	17	20
Progress Energy | Other Investments | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities, available-for-sale	26	26
Duke Energy Progress
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities, available-for-sale	1,031
Derivative assets	385	124
Total assets	4,270	4,229
Derivative liabilities		(10)
Net assets (liabilities)	4,270	4,219
Duke Energy Progress | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets	2
Total assets	3,135	3,369
Net assets (liabilities)	3,135	3,369
Duke Energy Progress | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets	383	124
Total assets	1,135	860
Derivative liabilities		(10)
Net assets (liabilities)	1,135	850
Duke Energy Progress | NDTF
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	58	94
Equity securities, FV-NI	2,782	2,970
Debt securities, available-for-sale	1,031	1,025
Duke Energy Progress | NDTF | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	58	94
Debt securities, available-for-sale	279	289
Duke Energy Progress | NDTF | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities, available-for-sale	752	736
Duke Energy Progress | NDTF equity securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Equity securities, FV-NI	2,782	2,970
Duke Energy Progress | NDTF equity securities | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Equity securities, FV-NI	2,782	2,970
Duke Energy Progress | Other Investments
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	14	16
Duke Energy Progress | Other Investments | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	14	16
Duke Energy Florida
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities, available-for-sale	421
Derivative assets	40
Total assets	582	582
Derivative liabilities		(14)
Net assets (liabilities)	582	568
Duke Energy Florida | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total assets	440	470
Net assets (liabilities)	440	470
Duke Energy Florida | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets	40
Total assets	142	112
Derivative liabilities		(14)
Net assets (liabilities)	142	98
Duke Energy Florida | NDTF
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	10	13
Equity securities, FV-NI	109	115
Debt securities, available-for-sale	395	425
Duke Energy Florida | NDTF | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	10	13
Debt securities, available-for-sale	319	339
Duke Energy Florida | NDTF | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities, available-for-sale	76	86
Duke Energy Florida | NDTF equity securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Equity securities, FV-NI	109	115
Duke Energy Florida | NDTF equity securities | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Equity securities, FV-NI	109	115
Duke Energy Florida | Other Investments
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	2	3
Debt securities, available-for-sale	26	26
Duke Energy Florida | Other Investments | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	2	3
Duke Energy Florida | Other Investments | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities, available-for-sale	26	26
Duke Energy Indiana
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities, available-for-sale	63
Derivative assets	45	23
Total assets	200	184
Derivative liabilities		(27)
Net assets (liabilities)	200	157
Duke Energy Indiana | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets	18	1
Total assets	110	98
Derivative liabilities		(13)
Net assets (liabilities)	110	85
Duke Energy Indiana | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets	17
Total assets	80	64
Derivative liabilities		(14)
Net assets (liabilities)	80	50
Duke Energy Indiana | Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets	10	22
Total assets	10	22
Net assets (liabilities)	10	22
Duke Energy Indiana | Other Investments
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	1
Equity securities, FV-NI	91	97
Debt securities, available-for-sale	63	64
Duke Energy Indiana | Other Investments | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	1
Equity securities, FV-NI	91	97
Duke Energy Indiana | Other Investments | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities, available-for-sale	63	64
Piedmont
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets	7	3
Derivative liabilities	(173)	(139)
Net assets (liabilities)	(166)	(136)
Piedmont | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets	7	3
Net assets (liabilities)	7	3
Piedmont | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative liabilities	(173)	(139)
Net assets (liabilities)	$ (173)	$ (139)

XML

Fair Value Measurements (Reconciliation of Assets and Liabilities Measured At Fair Value On A Recurring Basis Using Unobservable Inputs) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Derivatives (net)
Balance at beginning of period	$ (121)	$ (77)
Total pretax realized or unrealized losses included in comprehensive income	(68)	(44)
Purchases, sales, issuances and settlements:
Settlements	(3)	(7)
Total (losses) gains included on the Condensed Consolidated Balance Sheet	(7)	2
Balance at end of period	(199)	(126)
Duke Energy Indiana
Derivatives (net)
Balance at beginning of period	22	6
Purchases, sales, issuances and settlements:
Settlements	(6)	(6)
Total (losses) gains included on the Condensed Consolidated Balance Sheet	(6)	2
Balance at end of period	$ 10	$ 2

XML

Fair Value Measurements (Quantitative Level 3 Fair Value Disclosures) (Details) $ in Millions	Mar. 31, 2022 USD ($) $ / MWh	Dec. 31, 2021 USD ($) $ / MWh	Mar. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Fair Value Measurement Inputs and Valuation Techniques
Net derivative asset (liability) | $	$ (199)	$ (121)	$ (126)	$ (77)
Electricity contracts | RTO auction pricing
Fair Value Measurement Inputs and Valuation Techniques
Net derivative asset (liability) | $	$ (210)	$ (145)
Electricity contracts | RTO auction pricing | Minimum
Fair Value Measurement Inputs and Valuation Techniques
Input measurements (in usd per MWh and usd per MMBtu)	20.33	19.04
Electricity contracts | RTO auction pricing | Maximum
Fair Value Measurement Inputs and Valuation Techniques
Input measurements (in usd per MWh and usd per MMBtu)	187.82	139.11
Electricity contracts | RTO auction pricing | Weighted Average
Fair Value Measurement Inputs and Valuation Techniques
Input measurements (in usd per MWh and usd per MMBtu)	46.51	37,570,000
Duke Energy Ohio | FTRs | RTO auction pricing
Fair Value Measurement Inputs and Valuation Techniques
Net derivative asset (liability) | $	$ 1	$ 2
Duke Energy Ohio | FTRs | RTO auction pricing | Minimum
Fair Value Measurement Inputs and Valuation Techniques
Input measurements (in usd per MWh and usd per MMBtu)	0.16	0.06
Duke Energy Ohio | FTRs | RTO auction pricing | Maximum
Fair Value Measurement Inputs and Valuation Techniques
Input measurements (in usd per MWh and usd per MMBtu)	1.26	1.79
Duke Energy Ohio | FTRs | RTO auction pricing | Weighted Average
Fair Value Measurement Inputs and Valuation Techniques
Input measurements (in usd per MWh and usd per MMBtu)	0.63	0.96
Duke Energy Indiana
Fair Value Measurement Inputs and Valuation Techniques
Net derivative asset (liability) | $	$ 10	$ 22	$ 2	$ 6
Duke Energy Indiana | FTRs | RTO auction pricing
Fair Value Measurement Inputs and Valuation Techniques
Net derivative asset (liability) | $	$ 10	$ 22
Duke Energy Indiana | FTRs | RTO auction pricing | Minimum
Fair Value Measurement Inputs and Valuation Techniques
Input measurements (in usd per MWh and usd per MMBtu)	(0.46)	(1.18)
Duke Energy Indiana | FTRs | RTO auction pricing | Maximum
Fair Value Measurement Inputs and Valuation Techniques
Input measurements (in usd per MWh and usd per MMBtu)	17.24	13.11
Duke Energy Indiana | FTRs | RTO auction pricing | Weighted Average
Fair Value Measurement Inputs and Valuation Techniques
Input measurements (in usd per MWh and usd per MMBtu)	2.32	2.68

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Fair Value Measurements (Other Fair Value Disclosure) (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Book Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	$ 66,080	$ 63,835
Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	66,633	69,683
Piedmont Natural Gas and Progress Energy
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Unamortized debt discount (premium), net	1,200	1,250
Duke Energy Carolinas | Book Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	14,470	13,275
Duke Energy Carolinas | Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	15,117	15,101
Progress Energy | Book Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	21,657	20,823
Progress Energy | Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	22,669	23,751
Duke Energy Progress | Book Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	11,114	10,249
Duke Energy Progress | Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	11,260	11,252
Duke Energy Florida | Book Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	8,451	8,482
Duke Energy Florida | Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	8,911	9,772
Duke Energy Ohio | Book Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	3,193	3,193
Duke Energy Ohio | Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	3,278	3,570
Duke Energy Indiana | Book Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	4,270	4,323
Duke Energy Indiana | Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	4,554	5,067
Piedmont | Book Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	2,969	2,968
Piedmont | Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	$ 2,984	$ 3,278

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Variable Interest Entities (Narrative) (Details) - USD ($)	1 Months Ended	3 Months Ended	12 Months Ended
	Nov. 30, 2021	Mar. 31, 2022	Dec. 31, 2021
VIE primary beneficiary
Variable Interest Entities [Line Items]
Variable interest entity, financial or other support, amount		$ 0	$ 0
VIE primary beneficiary | CRC
Variable Interest Entities [Line Items]
Percent of proceeds received as cash		75.00%
Percent of proceeds received as subordinated note		25.00%
Minimum equity balance required by Cinergy Receivables		$ 3,000,000
VIE primary beneficiary | DECNCSF | Duke Energy Carolinas
Variable Interest Entities [Line Items]
Proceeds from issuance of senior secured bonds	$ 237,000,000
VIE primary beneficiary | DEPNCSF | Duke Energy Progress
Variable Interest Entities [Line Items]
Proceeds from issuance of senior secured bonds	$ 770,000,000
VIE not primary beneficiary | VIE With Ownership In Portfolio Of Wind Projects
Variable Interest Entities [Line Items]
Variable interest entity ownership interest		50.00%
VIE not primary beneficiary | OVEC
Variable Interest Entities [Line Items]
Variable interest entity ownership interest		9.00%

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Variable Interest Entities (Schedule of Accounts Receivable Securitizations) (Details) - USD ($)	Mar. 31, 2022	Dec. 31, 2021
Variable Interest Entities [Line Items]
Long-Term Debt	$ 62,196,000,000	$ 60,448,000,000
Duke Energy Carolinas
Variable Interest Entities [Line Items]
Long-Term Debt	12,803,000,000	12,595,000,000
Duke Energy Progress
Variable Interest Entities [Line Items]
Long-Term Debt	10,396,000,000	9,543,000,000
Duke Energy Florida
Variable Interest Entities [Line Items]
Long-Term Debt	8,374,000,000	8,406,000,000
CRC | VIE primary beneficiary
Variable Interest Entities [Line Items]
Facility size	350,000,000
Long-Term Debt	350,000,000	350,000,000
Accounts receivable from securitization	566,000,000	587,000,000
DERF | Duke Energy Carolinas | VIE primary beneficiary
Variable Interest Entities [Line Items]
Facility size	475,000,000
Long-Term Debt	499,000,000	475,000,000
Accounts receivable from securitization	858,000,000	844,000,000
DEPR | Duke Energy Progress | VIE primary beneficiary
Variable Interest Entities [Line Items]
Facility size	350,000,000
Long-Term Debt	350,000,000	350,000,000
Accounts receivable from securitization	658,000,000	574,000,000
DEFR | Duke Energy Florida | VIE primary beneficiary
Variable Interest Entities [Line Items]
Facility size	250,000,000
Long-Term Debt	250,000,000	250,000,000
Accounts receivable from securitization	$ 503,000,000	$ 427,000,000

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Variable Interest Entities (Schedule of Consolidated VIEs) (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Variable Interest Entities [Line Items]
Regulatory Assets: Current	$ 2,334	$ 2,150
Current Assets: Other	946	638
Other Noncurrent Assets: Regulatory assets	12,506	12,487
Property, Plant and Equipment: Cost	163,700	161,819
Accumulated depreciation and amortization	(51,517)	(50,555)
Other Noncurrent Assets: Other	3,995	3,812
Current Liabilities: Other	2,001	2,471
Current maturities of long-term debt	3,884	3,387
Long-Term Debt	62,196	60,448
Other Noncurrent Liabilities: AROs	12,112	12,129
Other Noncurrent Liabilities: Other	1,794	1,650
Duke Energy Florida
Variable Interest Entities [Line Items]
Regulatory Assets: Current	505	497
Current Assets: Other	79	80
Other Noncurrent Assets: Regulatory assets	1,899	1,791
Property, Plant and Equipment: Cost	24,257	23,865
Accumulated depreciation and amortization	(6,003)	(5,819)
Other Noncurrent Assets: Other	418	399
Current Liabilities: Other	349	408
Current maturities of long-term debt	77	76
Long-Term Debt	8,374	8,406
Other Noncurrent Liabilities: AROs	411	436
Other Noncurrent Liabilities: Other	306	309
Duke Energy Carolinas
Variable Interest Entities [Line Items]
Regulatory Assets: Current	652	544
Current Assets: Other	246	95
Other Noncurrent Assets: Regulatory assets	3,085	2,935
Property, Plant and Equipment: Cost	52,423	51,874
Accumulated depreciation and amortization	(18,058)	(17,854)
Other Noncurrent Assets: Other	1,297	1,248
Current Liabilities: Other	442	546
Current maturities of long-term debt	1,367	362
Long-Term Debt	12,803	12,595
Other Noncurrent Liabilities: AROs	5,067	5,052
Other Noncurrent Liabilities: Other	545	536
Duke Energy Progress
Variable Interest Entities [Line Items]
Regulatory Assets: Current	595	533
Current Assets: Other	200	83
Other Noncurrent Assets: Regulatory assets	4,124	4,118
Property, Plant and Equipment: Cost	37,361	37,018
Accumulated depreciation and amortization	(13,691)	(13,387)
Other Noncurrent Assets: Other	867	792
Current Liabilities: Other	400	448
Current maturities of long-term debt	568	556
Long-Term Debt	10,396	9,543
Other Noncurrent Liabilities: AROs	5,411	5,401
Other Noncurrent Liabilities: Other	96	87
DEFPF | Duke Energy Florida | VIE primary beneficiary
Variable Interest Entities [Line Items]
Receivables of VIEs	5	5
Regulatory Assets: Current	54	54
Current Assets: Other	13	39
Other Noncurrent Assets: Regulatory assets	872	883
Current Liabilities: Other	2	9
Current maturities of long-term debt	56	56
Long-Term Debt	916	946
DECNCSF | Duke Energy Carolinas | VIE primary beneficiary
Variable Interest Entities [Line Items]
Regulatory Assets: Current	12	12
Current Assets: Other	4
Other Noncurrent Assets: Regulatory assets	217	220
Other Noncurrent Assets: Other	1	1
Current Liabilities: Other	2
Current maturities of long-term debt	10	5
Long-Term Debt	223	228
DEPNCSF | Duke Energy Progress | VIE primary beneficiary
Variable Interest Entities [Line Items]
Regulatory Assets: Current	39	39
Current Assets: Other	14
Other Noncurrent Assets: Regulatory assets	711	720
Other Noncurrent Assets: Other	4	4
Current Liabilities: Other	6
Current maturities of long-term debt	32	15
Long-Term Debt	730	747
Commercial Renewables | VIE primary beneficiary
Variable Interest Entities [Line Items]
Current Assets: Other	215	215
Property, Plant and Equipment: Cost	7,337	7,339
Accumulated depreciation and amortization	(1,534)	(1,474)
Other Noncurrent Assets: Other	70	62
Current maturities of long-term debt	297	167
Long-Term Debt	1,325	1,475
Other Noncurrent Liabilities: AROs	173	173
Other Noncurrent Liabilities: Other	$ 360	$ 319

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Variable Interest Entities (Schedule of Non-Consolidated VIEs) (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Variable Interest Entities [Line Items]
Investments in equity method unconsolidated affiliates	$ 976	$ 970
Other noncurrent assets	3,995	3,812
Total Assets	171,220	169,587
Other current liabilities	2,001	2,471
Other, noncurrent liabilities	1,794	1,650
VIE not primary beneficiary
Variable Interest Entities [Line Items]
Investments in equity method unconsolidated affiliates	533	523
Other noncurrent assets		61
Deferred tax asset	61
Total Assets	594	584
Other current liabilities	53	51
Other, noncurrent liabilities	55	57
Total liabilities	108	108
Net assets	486	476
Duke Energy Ohio
Variable Interest Entities [Line Items]
Other noncurrent assets	87	84
Total Assets	10,731	10,774
Other current liabilities	73	82
Other, noncurrent liabilities	100	101
Duke Energy Ohio | VIE not primary beneficiary
Variable Interest Entities [Line Items]
Receivables from affiliated companies	65	79
Total Assets	65	79
Net assets	65	79
Duke Energy Indiana
Variable Interest Entities [Line Items]
Other noncurrent assets	295	296
Total Assets	14,219	14,488
Other current liabilities	108	105
Other, noncurrent liabilities	74	44
Duke Energy Indiana | VIE not primary beneficiary
Variable Interest Entities [Line Items]
Receivables from affiliated companies	80	97
Total Assets	80	97
Net assets	80	97
Pipeline Investments | VIE not primary beneficiary
Variable Interest Entities [Line Items]
Investments in equity method unconsolidated affiliates	29	15
Other noncurrent assets		61
Deferred tax asset	61
Total Assets	90	76
Other current liabilities	50	47
Other, noncurrent liabilities	52	54
Total liabilities	102	101
Net assets	(12)	(25)
Commercial Renewables | VIE not primary beneficiary
Variable Interest Entities [Line Items]
Investments in equity method unconsolidated affiliates	504	508
Total Assets	504	508
Other current liabilities	3	4
Other, noncurrent liabilities	3	3
Total liabilities	6	7
Net assets	$ 498	$ 501

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Variable Interest Entities (Receivables Sold) (Details) - VIE not primary beneficiary - CRC - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Duke Energy Ohio
Variable Interest Entities [Line Items]
Receivables sold	$ 263	$ 269
Less: Retained interests	65	79
Net receivables sold	198	190
Duke Energy Indiana
Variable Interest Entities [Line Items]
Receivables sold	305	328
Less: Retained interests	80	97
Net receivables sold	$ 225	$ 231

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Variable Interest Entities (Sales and Cash Flows) (Details) - VIE not primary beneficiary - CRC - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Duke Energy Ohio
Sales
Receivables sold	$ 663	$ 561
Loss recognized on sale	3	3
Cash flows
Cash proceeds from receivables sold	674	596
Return received on retained interests	1	1
Duke Energy Indiana
Sales
Receivables sold	782	698
Loss recognized on sale	4	3
Cash flows
Cash proceeds from receivables sold	795	746
Return received on retained interests	$ 2	$ 2

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Revenue (Remaining Performance Obligations) (Details) $ in Millions	Mar. 31, 2022 USD ($)
Progress Energy
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, amount	$ 235
Progress Energy | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-04-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, expected timing of satisfaction, period	9 months
Revenue, remaining performance obligation, amount	$ 80
Progress Energy | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Revenue, remaining performance obligation, amount	$ 53
Progress Energy | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Revenue, remaining performance obligation, amount	$ 45
Progress Energy | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Revenue, remaining performance obligation, amount	$ 7
Progress Energy | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Revenue, remaining performance obligation, amount	$ 7
Progress Energy | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, expected timing of satisfaction, period
Revenue, remaining performance obligation, amount	$ 43
Duke Energy Progress
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, amount	$ 22
Duke Energy Progress | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-04-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, expected timing of satisfaction, period	9 months
Revenue, remaining performance obligation, amount	$ 6
Duke Energy Progress | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Revenue, remaining performance obligation, amount	$ 8
Duke Energy Progress | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Revenue, remaining performance obligation, amount	$ 8
Duke Energy Progress | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Duke Energy Progress | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Duke Energy Progress | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, expected timing of satisfaction, period
Duke Energy Florida
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, amount	$ 213
Duke Energy Florida | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-04-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, expected timing of satisfaction, period	9 months
Revenue, remaining performance obligation, amount	$ 74
Duke Energy Florida | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Revenue, remaining performance obligation, amount	$ 45
Duke Energy Florida | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Revenue, remaining performance obligation, amount	$ 37
Duke Energy Florida | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Revenue, remaining performance obligation, amount	$ 7
Duke Energy Florida | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Revenue, remaining performance obligation, amount	$ 7
Duke Energy Florida | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, expected timing of satisfaction, period
Revenue, remaining performance obligation, amount	$ 43
Duke Energy Indiana
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, amount	$ 73
Duke Energy Indiana | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-04-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, expected timing of satisfaction, period	9 months
Revenue, remaining performance obligation, amount	$ 2
Duke Energy Indiana | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Revenue, remaining performance obligation, amount	$ 11
Duke Energy Indiana | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Revenue, remaining performance obligation, amount	$ 16
Duke Energy Indiana | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Revenue, remaining performance obligation, amount	$ 17
Duke Energy Indiana | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Revenue, remaining performance obligation, amount	$ 15
Duke Energy Indiana | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, expected timing of satisfaction, period
Revenue, remaining performance obligation, amount	$ 12
Piedmont
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, amount	$ 569
Piedmont | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-04-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, expected timing of satisfaction, period	9 months
Revenue, remaining performance obligation, amount	$ 48
Piedmont | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Revenue, remaining performance obligation, amount	$ 64
Piedmont | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Revenue, remaining performance obligation, amount	$ 61
Piedmont | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Revenue, remaining performance obligation, amount	$ 60
Piedmont | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Revenue, remaining performance obligation, amount	$ 50
Piedmont | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, expected timing of satisfaction, period
Revenue, remaining performance obligation, amount	$ 286

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Revenue (Remaining Performance Obligations Total) (Details) $ in Millions	Mar. 31, 2022 USD ($)
Progress Energy
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, amount	$ 235
Duke Energy Progress
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, amount	22
Duke Energy Florida
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, amount	213
Duke Energy Indiana
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, amount	73
Piedmont
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, amount	$ 569

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Revenue (Disaggregation of Revenue) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	$ 7,042	$ 6,094
Revenue from sources other than contracts with customers	90	56
Total operating revenues	7,132	6,150
Electric Utilities and Infrastructure
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	5,971	5,273
Total operating revenues	5,995	5,273
Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	2,767	2,462
Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | General
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	1,604	1,419
Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	772	662
Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	626	504
Electric Utilities and Infrastructure | Other revenues
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	202	226
Gas Utilities and Infrastructure
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	1,013	761
Total operating revenues	1,009	752
Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Residential
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	572	460
Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Commercial
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	269	204
Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Industrial
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	57	50
Gas Utilities and Infrastructure | Other revenues
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	115	47
Commercial Renewables
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	51	54
Total operating revenues	121	119
Other
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	7	6
Total operating revenues	7	6
Duke Energy Carolinas
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	1,875	1,739
Revenue from sources other than contracts with customers	13	(23)
Total operating revenues	1,888	1,716
Duke Energy Carolinas | Electric Utilities and Infrastructure
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	1,875	1,739
Duke Energy Carolinas | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	831	793
Duke Energy Carolinas | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | General
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	544	502
Duke Energy Carolinas | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	276	256
Duke Energy Carolinas | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	113	114
Duke Energy Carolinas | Electric Utilities and Infrastructure | Other revenues
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	111	74
Progress Energy
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	2,986	2,479
Revenue from sources other than contracts with customers	6	26
Total operating revenues	2,992	2,505
Progress Energy | Electric Utilities and Infrastructure
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	2,986	2,479
Progress Energy | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	1,368	1,162
Progress Energy | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | General
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	726	624
Progress Energy | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	270	207
Progress Energy | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	411	326
Progress Energy | Electric Utilities and Infrastructure | Other revenues
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	211	160
Duke Energy Progress
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	1,631	1,386
Revenue from sources other than contracts with customers	1	15
Total operating revenues	1,632	1,401
Duke Energy Progress | Electric Utilities and Infrastructure
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	1,631	1,386
Duke Energy Progress | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	624	560
Duke Energy Progress | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | General
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	325	306
Duke Energy Progress | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	194	145
Duke Energy Progress | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	349	292
Duke Energy Progress | Electric Utilities and Infrastructure | Other revenues
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	139	83
Duke Energy Florida
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	1,355	1,093
Revenue from sources other than contracts with customers		8
Total operating revenues	1,355	1,101
Duke Energy Florida | Electric Utilities and Infrastructure
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	1,355	1,093
Duke Energy Florida | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	744	602
Duke Energy Florida | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | General
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	401	318
Duke Energy Florida | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	76	62
Duke Energy Florida | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	62	34
Duke Energy Florida | Electric Utilities and Infrastructure | Other revenues
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	72	77
Duke Energy Ohio
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	632	535
Revenue from sources other than contracts with customers	6	(3)
Total operating revenues	638	532
Duke Energy Ohio | Electric Utilities and Infrastructure
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	406	365
Duke Energy Ohio | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	211	195
Duke Energy Ohio | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | General
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	116	104
Duke Energy Ohio | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	35	31
Duke Energy Ohio | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	23	13
Duke Energy Ohio | Electric Utilities and Infrastructure | Other revenues
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	21	22
Duke Energy Ohio | Gas Utilities and Infrastructure
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	226	170
Duke Energy Ohio | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Residential
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	149	110
Duke Energy Ohio | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Commercial
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	64	48
Duke Energy Ohio | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Industrial
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	7	7
Duke Energy Ohio | Gas Utilities and Infrastructure | Other revenues
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	6	5
Duke Energy Indiana
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	807	737
Revenue from sources other than contracts with customers	15	8
Total operating revenues	822	745
Duke Energy Indiana | Electric Utilities and Infrastructure
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	807	737
Duke Energy Indiana | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	354	313
Duke Energy Indiana | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | General
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	218	189
Duke Energy Indiana | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	192	167
Duke Energy Indiana | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	79	50
Duke Energy Indiana | Electric Utilities and Infrastructure | Other revenues
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	(36)	18
Piedmont
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	794	598
Revenue from sources other than contracts with customers	11	8
Total operating revenues	805	606
Piedmont | Gas Utilities and Infrastructure
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	794	598
Piedmont | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Residential
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	423	351
Piedmont | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Commercial
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	204	156
Piedmont | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Industrial
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	50	43
Piedmont | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Power Generation
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	24	22
Piedmont | Gas Utilities and Infrastructure | Other revenues
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	$ 93	$ 26

XML

Revenue (Reserve for Credit Losses for Trade and Other Receivables) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	$ 122	$ 146
Cumulative Change in Accounting Principle	140	147
Write-Offs	(23)	(21)
Credit Loss Expense	24	17
Other Adjustments	17	5
Ending balance	140	147
Duke Energy Carolinas
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	42	23
Cumulative Change in Accounting Principle	52	34
Write-Offs	(9)	(8)
Credit Loss Expense	5	10
Other Adjustments	14	9
Ending balance	52	34
Progress Energy
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	36	37
Cumulative Change in Accounting Principle	51	37
Write-Offs	(10)	(10)
Credit Loss Expense	12	7
Other Adjustments	13	3
Ending balance	51	37
Duke Energy Progress
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	21	23
Cumulative Change in Accounting Principle	31	23
Write-Offs	(2)	(5)
Credit Loss Expense	4	2
Other Adjustments	8	3
Ending balance	31	23
Duke Energy Florida
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	16	14
Cumulative Change in Accounting Principle	21	15
Write-Offs	(8)	(5)
Credit Loss Expense	8	5
Other Adjustments	5	1
Ending balance	21	15
Duke Energy Ohio
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	4	4
Cumulative Change in Accounting Principle	4	4
Ending balance	4	4
Duke Energy Indiana
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	3	3
Cumulative Change in Accounting Principle	3	3
Ending balance	3	3
Piedmont
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	15	12
Cumulative Change in Accounting Principle	17	14
Write-Offs	(1)	(1)
Credit Loss Expense	3	3
Ending balance	$ 17	$ 14

XML

Revenue (Aging of Trade Receivables) (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Financing Receivable, Past Due [Line Items]
Unbilled Receivables	$ 945	$ 964
Trade and Other Receivables, not past due	2,133	2,104
Deferred Payment Arrangements	136	115
Trade and Other Receivables	3,878	3,732
30-60 days
Financing Receivable, Past Due [Line Items]
Trade and Other Receivables	288	212
60-90 days
Financing Receivable, Past Due [Line Items]
Trade and Other Receivables	102	88
90 days
Financing Receivable, Past Due [Line Items]
Trade and Other Receivables	274	249
Duke Energy Carolinas
Financing Receivable, Past Due [Line Items]
Unbilled Receivables	339	316
Trade and Other Receivables, not past due	518	595
Deferred Payment Arrangements	60	55
Trade and Other Receivables	1,144	1,186
Duke Energy Carolinas | 30-60 days
Financing Receivable, Past Due [Line Items]
Trade and Other Receivables	75	77
Duke Energy Carolinas | 60-90 days
Financing Receivable, Past Due [Line Items]
Trade and Other Receivables	33	37
Duke Energy Carolinas | 90 days
Financing Receivable, Past Due [Line Items]
Trade and Other Receivables	119	106
Progress Energy
Financing Receivable, Past Due [Line Items]
Unbilled Receivables	270	266
Trade and Other Receivables, not past due	944	800
Deferred Payment Arrangements	61	45
Trade and Other Receivables	1,503	1,289
Progress Energy | 30-60 days
Financing Receivable, Past Due [Line Items]
Trade and Other Receivables	111	72
Progress Energy | 60-90 days
Financing Receivable, Past Due [Line Items]
Trade and Other Receivables	40	41
Progress Energy | 90 days
Financing Receivable, Past Due [Line Items]
Trade and Other Receivables	77	65
Duke Energy Progress
Financing Receivable, Past Due [Line Items]
Unbilled Receivables	161	193
Trade and Other Receivables, not past due	558	405
Deferred Payment Arrangements	33	22
Trade and Other Receivables	877	722
Duke Energy Progress | 30-60 days
Financing Receivable, Past Due [Line Items]
Trade and Other Receivables	64	44
Duke Energy Progress | 60-90 days
Financing Receivable, Past Due [Line Items]
Trade and Other Receivables	22	21
Duke Energy Progress | 90 days
Financing Receivable, Past Due [Line Items]
Trade and Other Receivables	39	37
Duke Energy Florida
Financing Receivable, Past Due [Line Items]
Unbilled Receivables	109	73
Trade and Other Receivables, not past due	386	393
Deferred Payment Arrangements	28	23
Trade and Other Receivables	626	565
Duke Energy Florida | 30-60 days
Financing Receivable, Past Due [Line Items]
Trade and Other Receivables	47	28
Duke Energy Florida | 60-90 days
Financing Receivable, Past Due [Line Items]
Trade and Other Receivables	18	20
Duke Energy Florida | 90 days
Financing Receivable, Past Due [Line Items]
Trade and Other Receivables	38	28
Duke Energy Ohio
Financing Receivable, Past Due [Line Items]
Unbilled Receivables	7	4
Trade and Other Receivables, not past due	40	42
Deferred Payment Arrangements	2	2
Trade and Other Receivables	105	100
Duke Energy Ohio | CRC
Financing Receivable, Past Due [Line Items]
Unbilled Receivables	63	82
Duke Energy Ohio | 30-60 days
Financing Receivable, Past Due [Line Items]
Trade and Other Receivables	8	4
Duke Energy Ohio | 60-90 days
Financing Receivable, Past Due [Line Items]
Trade and Other Receivables	2	1
Duke Energy Ohio | 90 days
Financing Receivable, Past Due [Line Items]
Trade and Other Receivables	46	47
Duke Energy Indiana
Financing Receivable, Past Due [Line Items]
Unbilled Receivables	44	27
Trade and Other Receivables, not past due	26	51
Trade and Other Receivables	86	103
Duke Energy Indiana | CRC
Financing Receivable, Past Due [Line Items]
Unbilled Receivables	100	121
Duke Energy Indiana | 30-60 days
Financing Receivable, Past Due [Line Items]
Trade and Other Receivables	4	13
Duke Energy Indiana | 60-90 days
Financing Receivable, Past Due [Line Items]
Trade and Other Receivables	3	1
Duke Energy Indiana | 90 days
Financing Receivable, Past Due [Line Items]
Trade and Other Receivables	9	11
Piedmont
Financing Receivable, Past Due [Line Items]
Unbilled Receivables	64	106
Trade and Other Receivables, not past due	215	202
Deferred Payment Arrangements	4	4
Trade and Other Receivables	320	333
Piedmont | 30-60 days
Financing Receivable, Past Due [Line Items]
Trade and Other Receivables	23	12
Piedmont | 60-90 days
Financing Receivable, Past Due [Line Items]
Trade and Other Receivables	7	2
Piedmont | 90 days
Financing Receivable, Past Due [Line Items]
Trade and Other Receivables	$ 7	$ 7

XML

Stockholders' Equity (Earnings Per Share Data) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Class of Stock [Line Items]
Net income available to Duke Energy common stockholders	$ 818	$ 953
Accumulated preferred stock dividends adjustment	12	12
Less: Impact of participating securities	1	1
Income from continuing operations available to Duke Energy common stockholders	$ 829	$ 964
Weighted average common shares outstanding – basic (in shares)	770	769
Weighted average common shares outstanding – diluted (in shares)	770	769
EPS available to Duke Energy common stockholders
Basic (in usd per share)	$ 1.08	$ 1.25
Diluted (in usd per share)	$ 1.08	$ 1.25
Potentially dilutive items excluded from the calculation (in shares)	2	2
Common Stock
EPS available to Duke Energy common stockholders
Dividends declared per common share (in usd per share)	$ 0.985	$ 0.965
Preferred stock, Series A
EPS available to Duke Energy common stockholders
Dividends declared on preferred stock per depositary share (in usd per share)	$ 0.359	0.359
Cumulative dividend rate per annum	5.75%
Liquidation preference per share (in usd per share)	$ 25
Preferred stock, Series B
EPS available to Duke Energy common stockholders
Dividends declared on preferred stock per depositary share (in usd per share)	$ 24.375	$ 24.375
Cumulative dividend rate per annum	4.875%
Liquidation preference per share (in usd per share)	$ 1,000

XML

Employee Benefit Plans (Components of Net Periodic Pension Costs) (Details) - Qualified Pension Plans - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Service cost	$ 40	$ 44
Interest cost on projected benefit obligation	58	55
Expected return on plan assets	(140)	(139)
Amortization of actuarial loss	24	33
Amortization of prior service credit	(5)	(7)
Amortization of settlement charges	2	2
Net periodic pension costs	(21)	(12)
Duke Energy Carolinas
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Service cost	12	14
Interest cost on projected benefit obligation	14	13
Expected return on plan assets	(38)	(35)
Amortization of actuarial loss	5	7
Amortization of prior service credit	(1)	(2)
Amortization of settlement charges	1	1
Net periodic pension costs	(7)	(2)
Progress Energy
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Service cost	12	13
Interest cost on projected benefit obligation	18	17
Expected return on plan assets	(46)	(47)
Amortization of actuarial loss	6	10
Amortization of prior service credit		(1)
Amortization of settlement charges	1	1
Net periodic pension costs	(9)	(7)
Duke Energy Progress
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Service cost	7	7
Interest cost on projected benefit obligation	8	7
Expected return on plan assets	(22)	(21)
Amortization of actuarial loss	3	5
Net periodic pension costs	(4)	(2)
Duke Energy Florida
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Service cost	4	5
Interest cost on projected benefit obligation	10	10
Expected return on plan assets	(24)	(26)
Amortization of actuarial loss	3	5
Net periodic pension costs	(7)	(6)
Duke Energy Ohio
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Service cost	1	1
Interest cost on projected benefit obligation	3	3
Expected return on plan assets	(5)	(7)
Amortization of actuarial loss	1	2
Net periodic pension costs		(1)
Duke Energy Indiana
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Service cost	2	2
Interest cost on projected benefit obligation	5	5
Expected return on plan assets	(9)	(10)
Amortization of actuarial loss	2	3
Piedmont
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Service cost	1	1
Interest cost on projected benefit obligation	2	2
Expected return on plan assets	(6)	(5)
Amortization of actuarial loss	2	2
Amortization of prior service credit	(2)	(1)
Net periodic pension costs	$ (3)	$ (1)

XML

Income Taxes (Effective Tax Rates) (Details)	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Reconciliation of Income Tax Expense at the U.S. Federal Statutory Tax Rate to the Actual Tax Expense from Continuing Operations [Abstract]
Effective tax rate	(1.70%)	8.20%
Duke Energy Carolinas
Reconciliation of Income Tax Expense at the U.S. Federal Statutory Tax Rate to the Actual Tax Expense from Continuing Operations [Abstract]
Effective tax rate	7.40%	6.90%
Progress Energy
Reconciliation of Income Tax Expense at the U.S. Federal Statutory Tax Rate to the Actual Tax Expense from Continuing Operations [Abstract]
Effective tax rate	15.90%	12.90%
Duke Energy Progress
Reconciliation of Income Tax Expense at the U.S. Federal Statutory Tax Rate to the Actual Tax Expense from Continuing Operations [Abstract]
Effective tax rate	14.00%	8.30%
Duke Energy Florida
Reconciliation of Income Tax Expense at the U.S. Federal Statutory Tax Rate to the Actual Tax Expense from Continuing Operations [Abstract]
Effective tax rate	20.10%	19.30%
Duke Energy Ohio
Reconciliation of Income Tax Expense at the U.S. Federal Statutory Tax Rate to the Actual Tax Expense from Continuing Operations [Abstract]
Effective tax rate	(266.70%)	13.30%
Duke Energy Indiana
Reconciliation of Income Tax Expense at the U.S. Federal Statutory Tax Rate to the Actual Tax Expense from Continuing Operations [Abstract]
Effective tax rate	31.90%	17.60%
Piedmont
Reconciliation of Income Tax Expense at the U.S. Federal Statutory Tax Rate to the Actual Tax Expense from Continuing Operations [Abstract]
Effective tax rate	13.40%	11.40%