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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, 2025

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 NumberRegistrant, State of Incorporation or Organization, Address of Principal Executive Offices, Zip Code and Telephone NumberIRS Employer Identification No.
dukeenergylogo4ca65.jpg
1-32853DUKE ENERGY CORPORATION20-2777218

(a Delaware corporation)

525 South Tryon Street

Charlotte, North Carolina 28202

800-488-3853

1-4928DUKE ENERGY CAROLINAS, LLC56-0205520

(a North Carolina limited liability company)

525 South Tryon Street

Charlotte, North Carolina 28202

800-488-3853

1-15929PROGRESS ENERGY, INC.56-2155481

(a North Carolina corporation)

411 Fayetteville Street

Raleigh, North Carolina 27601

800-488-3853

1-3382DUKE ENERGY PROGRESS, LLC56-0165465

(a North Carolina limited liability company)

411 Fayetteville Street

Raleigh, North Carolina 27601

800-488-3853

1-3274DUKE ENERGY FLORIDA, LLC59-0247770

(a Florida limited liability company)

299 First Avenue North

St. Petersburg, Florida 33701

800-488-3853

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

(an Ohio corporation)

139 East Fourth Street

Cincinnati, Ohio 45202

800-488-3853

1-3543DUKE ENERGY INDIANA, LLC35-0594457

(an Indiana limited liability company)

1000 East Main Street

Plainfield, Indiana 46168

800-488-3853

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

(a North Carolina corporation)

525 South Tryon Street

Charlotte, North Carolina 28202

800-488-3853

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

Duke Energy 3.10% Senior Notes due 2028 DUK 28A New York Stock Exchange LLC

Duke Energy 3.85% Senior Notes due 2034 DUK 34 New York Stock Exchange LLC

Duke Energy 3.75% Senior Notes due 2031 DUK 31A New York Stock Exchange LLC

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 EnergyYes☒No☐Duke Energy FloridaYes☒No☐
Duke Energy CarolinasYes☒No☐Duke Energy OhioYes☒No☐
Progress EnergyYes☒No☐Duke Energy IndianaYes☒No☐
Duke Energy ProgressYes☒No☐PiedmontYes☒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 EnergyLarge Accelerated Filer☒Accelerated filer☐Non-accelerated Filer☐Smaller reporting company☐Emerging growth company☐
Duke Energy CarolinasLarge Accelerated Filer☐Accelerated filer☐Non-accelerated Filer☒Smaller reporting company☐Emerging growth company☐
Progress EnergyLarge Accelerated Filer☐Accelerated filer☐Non-accelerated Filer☒Smaller reporting company☐Emerging growth company☐
Duke Energy ProgressLarge Accelerated Filer☐Accelerated filer☐Non-accelerated Filer☒Smaller reporting company☐Emerging growth company☐
Duke Energy FloridaLarge Accelerated Filer☐Accelerated filer☐Non-accelerated Filer☒Smaller reporting company☐Emerging growth company☐
Duke Energy OhioLarge Accelerated Filer☐Accelerated filer☐Non-accelerated Filer☒Smaller reporting company☐Emerging growth company☐
Duke Energy IndianaLarge Accelerated Filer☐Accelerated filer☐Non-accelerated Filer☒Smaller reporting company☐Emerging growth company☐
PiedmontLarge 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 EnergyYes☐No☒Duke Energy FloridaYes☐No☒
Duke Energy CarolinasYes☐No☒Duke Energy OhioYes☐No☒
Progress EnergyYes☐No☒Duke Energy IndianaYes☐No☒
Duke Energy ProgressYes☐No☒PiedmontYes☐No☒

Number of shares of common stock outstanding at April 30, 2025:

RegistrantDescriptionShares
Duke EnergyCommon stock, $0.001 par value777,257,107
Duke Energy CarolinasAll of the registrant's limited liability company member interests are directly owned by Duke Energy.N/A
Progress EnergyAll of the registrant's common stock is directly owned by Duke Energy.100
Duke Energy ProgressAll of the registrant's limited liability company member interests are indirectly owned by Duke Energy.N/A
Duke Energy FloridaAll of the registrant's limited liability company member interests are indirectly owned by Duke Energy.N/A
Duke Energy OhioAll of the registrant's common stock is indirectly owned by Duke Energy.89,663,086
Duke Energy IndianaAll of the registrant's limited liability company member interests are owned by a Duke Energy subsidiary that is 80.1% indirectly owned by Duke Energy.N/A
PiedmontAll of the registrant's common stock is directly owned by Duke Energy.100

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 Statements9
Duke Energy Carolinas, LLC Financial Statements14
Progress Energy, Inc. Financial Statements18
Duke Energy Progress, LLC Financial Statements22
Duke Energy Florida, LLC Financial Statements26
Duke Energy Ohio, Inc. Financial Statements30
Duke Energy Indiana, LLC Financial Statements34
Piedmont Natural Gas Company, Inc. Financial Statements38
Combined Notes to Condensed Consolidated Financial Statements
Note 1 – Organization and Basis of Presentation42
Note 2 – Dispositions44
Note 3 – Business Segments46
Note 4 – Regulatory Matters54
Note 5 – Commitments and Contingencies59
Note 6 – Debt and Credit Facilities62
Note 7 – Goodwill63
Note 8 – Related Party Transactions64
Note 9 – Derivatives and Hedging65
Note 10 – Investments in Debt and Equity Securities71
Note 11 – Fair Value Measurements75
Note 12 – Variable Interest Entities80
Note 13 – Revenue82
Note 14 – Stockholders' Equity86
Note 15 – Employee Benefit Plans87
Note 16 – Income Taxes87
Item 2.Management's Discussion and Analysis of Financial Condition and Results of Operations89
Item 3.Quantitative and Qualitative Disclosures About Market Risk103
Item 4.Controls and Procedures103
PART II. OTHER INFORMATION
Item 1.Legal Proceedings104
Item 1A.Risk Factors104
Item 2.Unregistered Sales of Equity Securities and Use of Proceeds104
Item 5.Other Information104
Item 6.Exhibits105
Signatures108
GLOSSARY OF TERMS

Glossary of Terms

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

Term or AcronymDefinition
2015 CCR RuleA 2015 EPA rule establishing national regulations to provide a comprehensive set of requirements for the management and disposal of CCR from coal-fired power plants
2024 CCR RuleThe EPA's Legacy CCR Surface Impoundments rule issued in April 2024 under the Resource Conservation and Recovery Act, which significantly expands the scope of the 2015 CCR Rule
AFUDCAllowance for funds used during construction
BisonBison Insurance Company Limited
BrookfieldBrookfield Renewable Partners L.P.
CCCombined Cycle
CCRCoal Combustion Residuals
CPCNCertificate of Public Convenience and Necessity
the CompanyDuke Energy Corporation and its subsidiaries
Commercial Renewables Disposal GroupsCommercial Renewables business segment, excluding the offshore wind contract for Carolina Long Bay, separated into the utility-scale solar and wind group, the distributed generation group and the remaining assets
COVIDCoronavirus Disease 2019
CRCCinergy Receivables Company, LLC
Crystal River Unit 3Crystal River Unit 3 Nuclear Plant
CTCombustion Turbine
DEFRDuke Energy Florida Receivables, LLC
DEPRDuke Energy Progress Receivables, LLC
DERFDuke Energy Receivables Finance Company, LLC
Duke EnergyDuke Energy Corporation (collectively with its subsidiaries)
Duke Energy OhioDuke Energy Ohio, Inc.
Duke Energy ProgressDuke Energy Progress, LLC
Duke Energy CarolinasDuke Energy Carolinas, LLC
Duke Energy FloridaDuke Energy Florida, LLC
Duke Energy IndianaDuke Energy Indiana, LLC
Duke Energy RegistrantsDuke Energy, Duke Energy Carolinas, Progress Energy, Duke Energy Progress, Duke Energy Florida, Duke Energy Ohio, Duke Energy Indiana and Piedmont
EDITExcess deferred income tax
EPAUnited States Environmental Protection Agency
EPSEarnings (Loss) Per Share
ESPElectric Security Plan
ETREffective tax rate
EU&IElectric Utilities and Infrastructure
Exchange ActSecurities Exchange Act of 1934
FERCFederal Energy Regulatory Commission
FPSCFlorida Public Service Commission
FTRFinancial transmission rights
GAAPGenerally accepted accounting principles in the U.S.
GAAP Reported EarningsNet Income Available to Duke Energy Corporation Common Stockholders
GAAP Reported EPSBasic Earnings Per Share Available to Duke Energy Corporation common stockholders
GHGGreenhouse Gas
GLOSSARY OF TERMS
GU&IGas Utilities and Infrastructure
GWhGigawatt-hours
HB 15Ohio Substitute House Bill 15
HB 951The Energy Solutions for North Carolina, or House Bill 951, passed in October 2021
IRAInflation Reduction Act
IRSInternal Revenue Service
IURCIndiana Utility Regulatory Commission
JDAJoint Dispatch Agreement
KPSCKentucky Public Service Commission
LGRLegacy Generation Rider
LLCLimited Liability Company
MWMegawatt
MWhMegawatt-hour
MYRPMultiyear rate plan
NCINoncontrolling Interests
NCUCNorth Carolina Utilities Commission
NMCNational Methanol Company
NPNSNormal purchase/normal sale
NRCU.S. Nuclear Regulatory Commission
OconeeOconee Nuclear Station
OPEBOther Post-Retirement Benefit Obligations
OVECOhio Valley Electric Corporation
the ParentDuke Energy Corporation holding company
PiedmontPiedmont Natural Gas Company, Inc.
Progress EnergyProgress Energy, Inc.
PSCSCPublic Service Commission of South Carolina
PTCProduction Tax Credit
PUCOPublic Utilities Commission of Ohio
RobinsonRobinson Nuclear Plant
RTORegional Transmission Organization
Subsidiary RegistrantsDuke Energy Carolinas, Progress Energy, Duke Energy Progress, Duke Energy Florida, Duke Energy Ohio, Duke Energy Indiana and Piedmont
TPUCTennessee Public Utility Commission
U.S.United States
VIEVariable Interest Entity
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 ability to implement our business strategy, including meeting forecasted load growth demand, grid and fleet modernization objectives, and our carbon emission reduction goals, while balancing customer reliability and affordability;

◦State, federal and foreign legislative and regulatory initiatives, including costs of compliance with existing and future environmental requirements and/or uncertainty of applicability or changes to such legislative and regulatory initiatives, 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 timely 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;

◦The impact of extraordinary external events, such as a global pandemic or military conflict, and their collateral consequences, including the disruption of global supply chains or the economic activity in our service territories;

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

◦Industrial, commercial and residential decline in service territories or customer bases resulting from sustained downturns of the economy, storm damage, reduced customer usage due to cost pressures from inflation, tariffs, or fuel costs, worsening economic health of our service territories, reductions in customer usage patterns, or lower than anticipated load growth, particularly if usage of electricity by data centers is less than currently projected, 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, including artificial intelligence;

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

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

◦Changing or conflicting investor, customer and other stakeholder expectations and demands, particularly regarding environmental, social and governance matters and costs related thereto;

◦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 United States 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 or other attack, war, vandalism, cybersecurity threats, data security breaches, operational events, information technology failures or other catastrophic events, such as severe storms, 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, including any impact from increased tariffs and interest rates, and the ability to timely 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 portfolio, 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;

FORWARD-LOOKING STATEMENTS

◦Construction and development risks associated with the completion of the Duke Energy Registrants’ capital investment projects, including risks related to financing, timing and receipt of necessary regulatory approvals, 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;

◦The ability to obtain adequate insurance at acceptable costs and recover on claims made;

◦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 businesses and the success of efforts to invest in and develop new opportunities;

◦The effect of accounting and reporting pronouncements issued periodically by accounting standard-setting bodies and the SEC;

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

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

◦Asset or business acquisitions and dispositions may not yield the anticipated benefits; and

◦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.

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.

FINANCIAL STATEMENTS

Next: Item 1. FINANCIAL STATEMENTS