Duke Energy
Annual Report 2022

Plain-text annual report

2022 ANNUAL REPORT AND FORM 10-K 4,000+ crew members respond to Hurricane Ian. September 2022. LYNN J. GOOD Chair, President and Chief Executive Offi cer MEETING THE MOMENT DEAR SHAREHOLDER: 2022 was a remarkable year in many respects. We made signifi cant progress on our strategy, seizing opportunities at every turn to better serve our customers and communities and grow our business. It was also a year full of twists – mounting supply chain constraints, increasing extreme weather events, and rapidly rising interest rates, infl ation and fuel costs – that we managed through with great agility. I’m proud of how Duke Energy employees met the moment time and again – opportunity and challenge alike. 1 | 2022 DUKE ENERGY ANNUAL REPORT / LETTER FROM LYNN GOOD OUR COMMITMENT TO DELIVER Adhering to a clear vision and an unwavering purpose is never so important as during tumultuous times like these. Our core principles guide us to make good decisions in the moment and keep our focus on the larger goals. For us, that means executing the industry’s largest clean energy transition while preserving affordability and reliability. The result is value for our customers, communities and investors. For the year, our adjusted earnings per share (EPS) were $5.27 – solidly within our revised guidance range. Our performance was driven by strong results in our electric and gas utilities, including positive contributions from base rate increases and riders and higher electric volumes supported by significant customer growth. We delivered a total shareholder return that outperformed the Philadelphia Utility Index by 1.4% and the S&P 500 by 20%. Investors recognized core strengths from customer growth, constructive jurisdictions, investment opportunities, and cost management. 2022 marked the 96th consecutive year we paid quarterly cash dividends, which we increased by 2.1%, on our common stock. Our performance in 2022 positions us well. We took proactive steps for the long term, advancing our regulatory and policy strategy across our footprint, including important milestones with the Carolinas Carbon Plan and Indiana Integrated Resource Plan (IRP), and increasing our capital plan. Given the significant investment opportunity in our regulated operations, we also made the decision to sell our Commercial Renewables business. We intend to close on the sale in the second half of 2023. Our regulated utilities remain strong and the future is bright. Constructive recovery mechanisms, an active regulatory calendar, and a continued focus on cost management give us confidence in achieving our adjusted 2023 EPS guidance range of $5.55 to $5.75 and our 5% to 7% long-term growth rate. And although economic uncertainty continues, we will closely monitor and respond to the dynamic environment, leveraging our business agility to deliver the results you’ve come to expect from us. 2 | 2022 DUKE ENERGY ANNUAL REPORT / LETTER FROM LYNN GOOD EXECUTING OUR STRATEGY Our value as a company has always rested on providing safe, reliable and affordable power, day in and day out. That commitment is unwavering; but how we deliver on it is changing. Our path to net-zero strategy continues to deliver consistent and lasting benefits to our customers, communities and investors. We believe in a responsible pace of change that is grounded in collaborating with stakeholders to achieve policy progress, transforming and readying our system, and creating value for customers and shareholders. Collaborating with Our Stakeholders Our vision for an affordable, reliable clean energy future is clear and it is informed by our engagement with stakeholders. We made strong progress in 2022, working with legislators, policymakers and other interested parties to advance the transition and ensure the best outcomes for those we serve. 3 | 2022 DUKE ENERGY ANNUAL REPORT / LETTER FROM LYNN GOOD At the federal level, President Biden signed historic climate legislation into law. The Inflation Reduction Act (IRA) lowers the cost of the energy transformation and incentivizes future investment in clean energy technologies. We expect to qualify for a variety of nuclear, solar and other renewable tax credits that will generate billions in savings over the next decade and help maintain affordability for our customers. We also made progress with the U.S. Department of Energy (DOE) and other agencies to identify opportunities under the bipartisan Infrastructure Investment and Jobs Act (IIJA) signed into law in 2021. The DOE received more than $62 billion to help develop and deploy zero-emitting load-following resources. In 2022, we submitted two funding applications – one to expand our methane emissions reduction work and another for an integrated carbon capture and storage design study at our Edwardsport Combined Cycle Plant. Already this year, we are pursuing funding to enhance grid resiliency and progress the development of hydrogen and long-duration storage. Across our service territories, we worked to advance our jurisdictional priorities. Foremost among them is the North Carolina Carbon Plan, which is designed to meet carbon reduction targets under North Carolina’s House Bill 951 (HB 951) – 70% carbon reduction by 2030 and net-zero by 2050 – while balancing affordability and reliability. We spent months gathering feedback to inform our proposed plan, including engaging over 500 stakeholders from diverse community, customer and consumer groups. In May, we filed a plan that outlined several portfolios to achieve these goals. Each presented a road map to lower emissions through an orderly retirement of coal, replacing it with a diverse set of carbon-free and dispatchable resources. We also requested the approval of near- term activities needed for replacement generation. In late December, we received a constructive order from the North Carolina Utilities Commission (NCUC) recognizing the value of an all-of-the-above approach. The near- term activities approved include 3,100 megawatts of solar and 1,600 megawatts of storage, as well as transmission upgrades to support these resources. 4 | 2022 DUKE ENERGY ANNUAL REPORT / LETTER FROM LYNN GOOD The NCUC also approved development activities for longer-lead investments, including small modular nuclear reactors (SMRs), pumped hydro storage and transmission related to offshore wind. And the NCUC supported planning for approximately 2,000 megawatts of new, hydrogen-capable natural gas generation to maintain reliability. We look forward to continuing our progress through our updated Carbon Plan filing in North Carolina and the next IRP filing in South Carolina later this year. Enabled by HB 951, we also initiated our first requests in North Carolina to implement modern regulatory mechanisms, including performance-based ratemaking and multiyear rate plans, in Duke Energy Progress (DEP) and Duke Energy Carolinas (DEC). The proposed, three-year multiyear rate plan will help smooth customer rate volatility while maintaining upside from customer growth. Investments are focused on grid resiliency, enhanced reliability and lower operating costs. We expect interim rates to be implemented as early as midyear for DEP and September for DEC. In South Carolina, storm securitization legislation was signed into law in June. This tool allows utilities to issue bonds to finance storm restoration costs, lowering the impact for customers. We filed an initial application with the Public Service Commission of South Carolina in August to begin securitizing deferred storm costs in DEP and expect to issue more than $170 million in bonds by early 2024. And in the Midwest, we continued to advance our Indiana transition. We held multiple public information sessions with stakeholders, conducted requests for proposals for non-intermittent and renewable resources, and anticipate filing for certificates of public convenience and necessity for new generation in the coming months. We reached positive settlements in our Ohio and DEP South Carolina electric rate cases, which were approved by the respective state commissions. These agreements underscore the constructive environment in our jurisdictions, allowing us to make critical investments and bring greater value to stakeholders. 5 | 2022 DUKE ENERGY ANNUAL REPORT / LETTER FROM LYNN GOOD Transforming and Readying the System We operate one of the most diverse systems in the industry and are preparing it for our low-carbon future. We are on track to exceed our 50% carbon emissions reduction target by 2030 and committed to an additional interim target this past year – 80% by 2040 – on our path to net-zero by 2050. We also became one of the first in the industry to expand our net-zero goals to include Scope 2 and certain Scope 3 emissions. Ninety-five percent of our emissions are now tied to a net-zero target. Reducing emissions In 2022, we established a goal for coal to represent less than 5% of total generation by 2030 and a full exit by 2035, subject to regulatory approval. We announced plans to add regulated renewables at a record rate. By 2035, we anticipate 30,000 megawatts on our system – five times what we operate today. This past year, we completed our initial $1 billion, 700-megawatt solar commitment in Florida. We continue executing our $1 billion Clean Energy Connection program to add another 750 megawatts by the end of 2024. 6 | 2022 DUKE ENERGY ANNUAL REPORT / LETTER FROM LYNN GOOD To support our renewables portfolio, we are increasing energy storage, adding nearly 20 megawatts of battery storage in Florida alone last year. By 2024, we will finish upgrades to our Bad Creek hydro station in South Carolina, bringing capacity to more than 1,600 megawatts. We also continue to evaluate the potential for a second powerhouse to double capacity. Nuclear, which accounts for 80% of the carbon-free energy we generate, remains critical. Put simply, we can’t achieve our clean energy goals without it. We continue to advance our first subsequent license renewal application, which would extend the life of Oconee Nuclear Station for an additional 20 years. We will pursue similar renewals for the remainder of our 11 units to operate these valuable assets and support our energy transition. In our natural gas local distribution companies, we are making great progress reducing methane emissions through our partnership with Accenture, Microsoft and Avanade to use satellites, sensors and other technologies to monitor and detect leaks in real time. And we’re investing $300 million over the next five years in renewable natural gas, including two North Carolina projects that will be completed this year. Grid investments The grid is the backbone of our transition. We continue to modernize it to ensure it’s ready to meet the needs of tomorrow. This includes preparing for more renewable energy and extreme weather. In Indiana, we completed our initial Transmission, Distribution and Storage System Improvement Charge (TDSIC) plan, investing $1.4 billion over seven years to make infrastructure upgrades that improve service to customers. The Indiana Utility Regulatory Commission approved our subsequent $2 billion, six-year TDSIC 2.0 plan, which will increase grid reliability and resiliency, enable renewables and distributed generation, and enhance economic development opportunities. In Florida, we received approval of our Storm Protection Plan from the Public Service Commission. Over the next decade, we anticipate investing more than $7 billion in capital investments to harden the grid and improve resiliency. 7 | 2022 DUKE ENERGY ANNUAL REPORT / LETTER FROM LYNN GOOD We’re transforming our infrastructure to enable the two-way flow of electricity, which will support grid edge technologies, including rooftop solar, battery storage and electric vehicles. We’re collaborating with manufacturers to test vehicle- to-grid integration capabilities during periods of high energy demand. To prepare for electric vehicle growth, we also have charging pilots across all our service territories and are investing $100 million in charging infrastructure by 2025. Emerging technologies This decade is essential for researching and developing emerging technologies that are needed to close the gap to net-zero. The IIJA plays an important role in bringing the public and private sectors together to help test and deploy these innovations. Offshore wind is one such option. In May, we were awarded one of the Carolina Long Bay leases near Wilmington, North Carolina. The Carbon Plan supports limited project development activities common to all Carolina wind energy areas, such as onshore transmission infrastructure. We continue to see exciting developments with hydrogen. We served as a driving force to launch the Southeast Hydrogen Hub coalition, which includes Southern Company, Dominion Energy and Tennessee Valley Authority, among others, to meet the growing demand for hydrogen in the transportation, industrial and power sectors. The coalition was encouraged by the DOE to submit a full funding application under the IIJA, which we will do this April. Advanced nuclear and SMR designs continue to develop. We remain technology agnostic on development activities but are engaged with TerraPower’s Natrium and GE Hitachi’s BWRX-300 reactors. We also participate in several developer advisory boards, including the Holtec executive advisory committee and NuScale industry advisory board. This past year, we announced a partnership with Purdue University to evaluate the possibilities of SMR technologies to meet campus needs and provide excess power to the grid. Long-duration energy storage coupled with these new technologies could be a significant contributor to our goals. By 2050, we plan to have 30 gigawatts of storage on our system. Currently, we’re exploring more than a dozen different types of storage – from fuel cells to pumped hydro to long-duration batteries. We are testing an Eos Gen 3 zinc battery and a Honeywell flow battery solution at innovation centers. We also recently submitted a DOE application for a CO2 energy storage installation at our Mayo Plant. 8 | 2022 DUKE ENERGY ANNUAL REPORT / LETTER FROM LYNN GOOD Creating Sustainable Value for Customers and Shareholders We believe deeply that our transition must deliver value to those we serve, and 2022 is proof of our commitment. Delivering for our customers means providing reliable power at an affordable price and meeting their evolving needs. In today’s environment, affordability and energy equity are front and center. During the pandemic, we created a specialized team to partner with thousands of agencies across our service territories. Since 2021, our specialists helped customers access nearly $300 million in assistance funds. We also began tailoring programs in our states to help customers with utility bills. Through our Share the Light Fund, our company, Foundation, employees, and customers invested more than $9 million to provide low-income customers bill pay assistance. 9 | 2022 DUKE ENERGY ANNUAL REPORT / LETTER FROM LYNN GOOD We’re leveraging IRA benefits and have started to incorporate them into resource plans and rate adjustments across jurisdictions. In Florida, we’re already passing along $56 million of corporate tax savings annually. The Southeast Energy Exchange Market (SEEM) furthered customer savings. Beginning operations in November, SEEM is a sub-hourly, bilateral trading market of more than 20 Southeast and Midwest energy companies that allows utilities to more efficiently buy and sell power and enable renewables. And we introduced creative new programs. In South Carolina, for example, we filed for the creation of new renewable energy programs such as Renewable Choice, which would allow customers to purchase renewable energy certificates to match up to 100% of their demand. The proposal also includes one of the first 24/7 renewable offerings to align use with the hourly production of renewable energy. We continue to offer customers the control, convenience and options they want, and this focus shows in our metrics. Piedmont Natural Gas was named No. 1 in customer satisfaction by J.D. Power for residential natural gas service in the South for the first time in company history. Our Carolinas electric utilities also remain top quartile. For our investors, we’re focused on driving sustainable growth. We announced an increased capital plan of more than $145 billion in our regulated businesses over the next decade. It’s one of the largest in the industry, with 85% funding investments in the grid and our clean energy transition. Ninety percent of electric capital investments are eligible for modern recovery mechanisms, minimizing regulatory lag and strengthening the balance sheet. And we are committed to delivering results the right way, which starts with transparency. We published a Climate Report, ESG Report and Trade Associations Climate Review – each outlining various aspects of our transition, including our progress on decarbonization, diversity and inclusion, pay equity, environmental justice, just transition, and policy engagement. This focus earned us a Labrador Transparency Award. 10 | 2022 DUKE ENERGY ANNUAL REPORT / LETTER FROM LYNN GOOD EXERCISING AGILITY AND NAVIGATING HEADWINDS Even as we pursued our strategic goals, we acted swiftly and decisively as challenges arose in this volatile environment. In response to rising interest rates and inflation, we built on our strong track record on cost management by identifying $300 million in savings opportunities for 2023. Many of these savings were realized through organization simplification, work reduction, automation and digitization, and ongoing cost reductions in supply chain. We believe approximately 75% of the savings will be sustainable. We minimized high fuel costs for our customers by hedging price exposure, where possible, and engaging in long-term supply and transportation contracts. We took advantage of our fleet diversity to dispatch generation to create cost savings and fuel security. We also worked with regulators in our states to mitigate bill impacts and informed customers of resources to help. Our service territories also experienced a series of extreme weather events this year. More than 19,000 restoration workers responded to 1 million customer outages across a series of winter storms – the most we’ve seen in eight years. And in September, Hurricane Ian made landfall in Florida as the fifth-strongest hurricane on record. We saw significant impacts in Florida and the Carolinas, but we had 20,000 resources at the ready and restored nearly 2 million outages within 72 hours. 11 | 2022 DUKE ENERGY ANNUAL REPORT / LETTER FROM LYNN GOOD Our team was once again tested in late December. Historic cold weather and extremely high customer demand led to a unique chain of events that forced us to implement rotating outages in the Carolinas for the first time in our history. The rotating outages were conducted to avoid potentially larger and longer outages across the system. We are deeply sorry for what our customers experienced and are pursuing every possible lesson. But I am proud of how our employees responded to restore power and kept it on for customers during the remainder of the cold spell. We are taking steps to ensure that if faced with similar challenges, we will see a different outcome and provide a better customer experience. Regrettably, weather wasn’t the only threat to the grid. In early December, two of our substations in Moore County, North Carolina, were attacked. Our crews worked around-the-clock, pursuing multiple repair paths and replacing large and vital pieces of equipment over several days to restore service to all 45,000 impacted customers. As the largest grid operator in the country, protecting our grid is paramount. We work every day to secure millions of essential components across our grid. And we continue to collaborate with our industry and government partners to integrate learnings from this incident and others around the country to enhance our protection programs. 12 | 2022 DUKE ENERGY ANNUAL REPORT / LETTER FROM LYNN GOOD BUILDING ON A STRONG FOUNDATION We recognize safety, operational excellence and community engagement are foundational to our success. And we continue to find ways to mature our programs because we recognize our job is never done. Safety and Operational Excellence We remain an industry leader in safety performance based on Edison Electric Institute metrics through our focus on continuous improvement and reinforcement of our safety principles. Importantly, our environmental performance remains exemplary. In operational excellence, our generation fleet continued its impressive reliability and safety record. In 2022, our nuclear fleet attained a capacity factor of 93.7% – the 24th year above 90%. And our Regulated & Renewable Energy team maintained strong reliability. As mentioned above, our employees responded quickly to a series of significant storms this year and grid investments also improved restoration times. In 2022, self-healing technology helped to avoid more than 1.4 million customer outages, saving more than 7.2 million hours of outage time. 13 | 2022 DUKE ENERGY ANNUAL REPORT / LETTER FROM LYNN GOOD Investing in Our Communities We are privileged to be a part of the communities that we serve for more than a century. Part of our purpose is ensuring their vitality. We introduced just transition principles that focus on our workforce, communities, customers, and economic development. This framework will guide our efforts on the path to net-zero, identifying opportunities and needs that arise from the transition. In 2022, we helped attract over $23 billion in capital investment and created more than 29,000 jobs in collaboration with state and local economic development partners. Our company and Foundation also donated more than $49 million to support our local communities, focusing on nonprofits that help create vibrant economies and advance justice, equity and inclusion, and climate resiliency. Our employees volunteered nearly 100,000 hours to support nonprofits across our jurisdictions. And the employee-led Power of Giving campaign raised more than $5.6 million this past year. Combined with matching funds from our company, we donated nearly $11 million, supporting more than 4,700 organizations. And we continue our important work to ensure our company reflects the communities we serve, including implementing action plans that foster a culture of inclusion and drive diversity in our workforce, leadership team, and supply chain. In the area of inclusion, we saw high scores in our employee engagement survey, and more than 8,000 employees engaged in our “Let’s Talk About It” series of open discussions. We are partnering with and recruiting from more diverse sources, including historically Black colleges and universities and diverse community and professional organizations. We’re also building a diverse pipeline of future applicants through new curricula and programs, including a new lineworker program at Central Piedmont Community College and other clean energy educational and workforce training programs. Looking to the future, an economic impact study conducted by EY found that our 10-year, $145 billion capital investment plan will support $250 billion in economic output throughout the U.S. economy. The plan will also add $5 billion in property taxes over the next 10 years and lead to the creation of 20,000 additional jobs annually. This includes workers who directly build clean energy infrastructure and indirect jobs in other sectors of the economy. 14 | 2022 DUKE ENERGY ANNUAL REPORT / LETTER FROM LYNN GOOD These critical efforts continue to be recognized. We achieved MSCI’s “AA” ranking and were named a top 100 Most “JUST” company by JUST Capital. We made consecutive appearances on several national rankings, including Fortune Magazine’s “World’s Most Admired Companies” for the sixth year and the Human Rights Campaign Foundation’s Corporate Equality Index, receiving a perfect score for the fifth year. Forbes listed Duke Energy as one of the “2022 Best Employers for Diversity” and “2022 Best Employers for Women.” CONTINUING THE MOMENTUM I’m incredibly proud of the more than 27,000 employees at Duke Energy who met the moment time after time. Whether it was restoring service after a historic hurricane, leading the way on decarbonization or finding ways to mitigate costs for customers, we rose to the occasion and found a way to deliver on our purpose and advance our priorities. We are excited for the opportunities that come with the nation’s largest clean energy transition. We thank you for your investment in Duke Energy and look forward to building on our success for many years to come. Lynn J. Good Chair, President and Chief Executive Officer 15 | 2022 DUKE ENERGY ANNUAL REPORT / LETTER FROM LYNN GOOD Our Financial Highlightsa (In millions, except per share amounts) Operating Results Total operating revenues Income from continuing operations Net income Net income available to Duke Energy Corporation common stockholders Cash Flow Data 2022 2021 $28,768 $24,621 $3,778 $2,455 $2,444 $3,723 $3,579 $3,802 Net cash provided by operating activities $5,927 $8,290 Common Stock Data Shares of common stock outstanding Year-end Weighted average – basic and diluted Reported basic and diluted earnings per share (GAAP) Adjusted basic and diluted earnings per share (non-GAAP) Common stock dividends declared per share Balance Sheet Data Total assets Long-term debt including finance leases, less current maturities Total Duke Energy Corporation stockholders’ equity 770 770 $3.17 $5.27 $3.98 769 769 $4.94 $4.99 $3.90 $178,086 $169,587 $67,061 $49,322 $60,448 $49,296 Earnings per share (in dollars) Common stock dividends declared per share (in dollars) Capital and investment expenditures (dollars in billions) 5.27 4.94 4.99 3.98 3.90 11.4 9.8 3.17 2022 2021 2022 2021 2022 2021 Reported basic and diluted Adjusted basic and diluted earnings per share (GAAP) earnings per share (Non-GAAP) (a) Significant transactions reflected in the results above include: (i) the net impact of charges related to the Indiana court rulings on coal ash and other unrelated ongoing litigation in the current year, (ii) costs attributable to business transformation, including long-term real estate strategy changes and workforce reduction, (iii) an impairment charge related to the South Carolina Supreme Court decision on coal ash, insurance proceeds and Duke Energy Carolinas and Duke Energy Progress coal ash settlement in the prior year, (iv) additional exit obligations related to ACP in the prior year and (v) the estimated impairment on the sale of the Commercial Renewables business in the current year. 16 | 2022 DUKE ENERGY ANNUAL REPORT Duke Energy at a Glance Electric Utilities and Infrastructure conducts operations primarily through the regulated public utilities of Duke Energy Carolinas, Duke Energy Progress, Duke Energy Florida, Duke Energy Indiana, Duke Energy Ohio and Duke Energy Kentucky. Electric Operations  Owns approximately 49,870 megawatts (MW) of generating capacity  Service area covers about 92,000 square miles with an estimated population of 26 million  Service to approximately 8.2 million residential, commercial and industrial customers  289,700 miles of distribution lines and a 31,500-mile transmission system  20% of coal generation capacity has dual fuel capability 42 33 17 8 39 37 22 2 Electric Utilities and Infrastructure Generation Diversity (percent owned capacity) 42% Natural Gas/Fuel Oil 31% Coal 18% Nuclear 9% Hydro and Renewable Generated (net output gigawatt-hours (GWh)) 45% Natural Gas/Fuel Oil 35% Nuclear 18% Coal 2% Hydro and Renewable Customer Diversity (in billed GWh sales) 33% Residential 29% General Services 19% Industrial 19% Wholesale/Other Natural Gas Customer Diversity Gas Utilities and Infrastructure conducts natural gas distribution operations primarily through the regulated public utilities of Piedmont Natural Gas and Duke Energy Ohio. Natural Gas Operations (throughput)2 51 18 15 9 7 58% Power Gen 16% General Services 14% Residential 7% Industrial 5% Other  Regulated natural gas transmission and distribution services to approximately 1.6 million customers in the Carolinas, Tennessee, southwestern Ohio and Northern Kentucky  Maintains more than 35,200 miles of natural gas transmission and distribution pipelines and 28,300 miles of natural gas service pipelines December 31, 2022. Contains projects included in tax equity structures where investors have differing interests in the projects’ economic attributes (100% of the tax equity projects’ capacity is included). Commercial Renewables was excluded this year because it has been moved to discontinued operations. 17 | 2022 DUKE ENERGY ANNUAL REPORT Annual Meeting of Shareholders Duke Energy’s 2023 Annual Meeting of Shareholders will be: Date: May 4, 2023 Time: 1 p.m. Eastern time Visit: www.virtualshareholdermeeting.com/DUK2023 Audio broadcast: 877.328.2502 To participate in the online Annual Meeting, shareholders will need the 16-digit control number included on their Notice Regarding the Availability of Proxy Materials, on their proxy card, and on the instructions that accompanied their proxy materials. Shareholder Services Shareholders may call toll-free at 800.488.3853 or 704.382.3853 with questions about their stock accounts, legal transfer requirements, address changes, or replacement dividend checks. Additionally, registered shareholders can view their account online through DUK-Online, available at duke-energy.com/investors. Send written requests to: Investor Relations Duke Energy P.O. Box 1005 Charlotte, NC 28201 For electronic correspondence, visit duke-energy.com/investors. Stock Exchange Listing Duke Energy’s common stock is listed on the New York Stock Exchange. The Company’s common stock trading symbol is DUK. Website Addresses Company homepage: duke-energy.com Investor Relations: duke-energy.com/investors InvestorDirect Choice Plan The InvestorDirect Choice Plan provides a simple and convenient way to purchase common stock directly through the Company, without incurring brokerage fees. Purchases may be made weekly. Bank drafts for monthly purchases, as well as a safekeeping option for depositing certificates into the plan, are available. The plan also provides for full reinvestment, direct deposit, or cash payment of a portion of the dividends. Additionally, participants may register for DUK- Online, our online account management service. 10 | 2022 DUKE ENERGY ANNUAL REPORT Financial Publications Duke Energy’s Annual Report and related financial publications can be found on our website at duke-energy.com/investors. Printed copies are also available free of charge upon request. Duplicate Mailings If your shares are registered in different accounts, you may receive duplicate mailings of annual reports, proxy statements, and other shareholder information. Call Investor Relations for instructions on eliminating duplications or combining your accounts. Transfer Agent and Registrar Duke Energy maintains shareholder records and acts as transfer agent and registrar for the Company’s common stock. Dividend Payment Duke Energy has paid quarterly cash dividends on its common stock for 96 consecutive years. For the remainder of 2023, dividends on common stock are expected to be paid, subject to declaration by the Board of Directors, on June 16, September 16, and December 16. Bond Trustee If you have questions regarding your bond account, call 800.254.2826, or write to: The Bank of New York Mellon Global Trust Services 101 Barclay Street – 21st Floor New York, NY 10286 Send Us Feedback We welcome your opinion on this annual report. Please visit duke-energy.com/investors, where you can view and provide feedback on both the print and online versions of this report, or contact Investor Relations directly. Duke Energy is an equal opportunity employer. This report is published solely to inform shareholders and is not to be considered an offer, or the solicitation of an offer, to buy or sell securities. FPO printer to place FSC Products with a Mixed Sources label support the development of responsible forest management worldwide. The wood comes from Forest Stewardship Council® (FSC®)-certified well-managed forests, company-controlled sources and/or recycled material. This annual report is printed on paper manufactured with energy generated from renewable sources. DUKE ENERGY CORPORATION Cautionary Statement Regarding Forward-Looking Information Non-GAAP Financial Measures 2022 Form 10-K Intentionally Left Blank (Mark One)   Commission file number 1-32853 1-4928 1-15929 1-3382 1-3274 1-1232 1-3543 1-6196 UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 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 Registrant, State of Incorporation or Organization, Address of Principal Executive Offices, Zip Code and Telephone Number DUKE ENERGY CORPORATION (a Delaware corporation) 526 South Church Street Charlotte, North Carolina 28202-1803 704-382-3853 DUKE ENERGY CAROLINAS, LLC (a North Carolina limited liability company) 526 South Church Street Charlotte, North Carolina 28202-1803 704-382-3853 PROGRESS ENERGY, INC. (a North Carolina corporation) 410 South Wilmington Street Raleigh, North Carolina 27601-1748 704-382-3853 DUKE ENERGY PROGRESS, LLC (a North Carolina limited liability company) 410 South Wilmington Street Raleigh, North Carolina 27601-1748 704-382-3853 DUKE ENERGY FLORIDA, LLC (a Florida limited liability company) 299 First Avenue North St. Petersburg, Florida 33701 704-382-3853 DUKE ENERGY OHIO, INC. (an Ohio corporation) 139 East Fourth Street Cincinnati, Ohio 45202 704-382-3853 DUKE ENERGY INDIANA, LLC (an Indiana limited liability company) 1000 East Main Street Plainfield, Indiana 46168 704-382-3853 PIEDMONT NATURAL GAS COMPANY, INC. (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: IRS Employer Identification No. 20-2777218 56-0205520 56-2155481 56-0165465 59-0247770 31-0240030 35-0594457 56-0556998 Registrant Title of each class Trading symbols Duke Energy Corporation (Duke Energy) Duke Energy Duke Energy Duke Energy Duke Energy Common Stock, $0.001 par value 5.625% Junior Subordinated Debentures due September 15, 2078 Depositary Shares, each representing a 1/1,000th interest in a share of 5.75% Series A Cumulative Redeemable Perpetual Preferred Stock, par value $0.001 per share 3.10% Senior Notes due 2028 3.85% Senior Notes due 2034 DUK DUKB DUK PR A DUK 28A DUK 34 Name of each exchange on which registered New York Stock Exchange LLC New York Stock Exchange LLC New York Stock Exchange LLC New York Stock Exchange LLC New York Stock Exchange LLC Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. SECURITIES REGISTERED PURSUANT TO SECTION 12(g) OF THE ACT: None Duke Energy Duke Energy Carolinas, LLC (Duke Energy Carolinas) Progress Energy, Inc. (Progress Energy) Duke Energy Progress, LLC (Duke Energy Progress) Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Exchange Act. Yes  No  (Response applicable to all registrants.) Duke Energy Florida, LLC (Duke Energy Florida) Duke Energy Ohio, Inc. (Duke Energy Ohio) Duke Energy Indiana, LLC (Duke Energy Indiana) Piedmont Natural Gas Company, Inc. (Piedmont) Yes  Yes  Yes  Yes  Yes  Yes  Yes  Yes  No  No  No  No  No  No  No  No  Indicate by check mark whether the registrants (1) have filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes  No  Indicate by check mark whether the registrants have 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). Yes  No  Indicate by check mark whether Duke Energy 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.: 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 each of Duke Energy Carolinas, Progress Energy, Duke Energy Progress, Duke Energy Florida, Duke Energy Ohio, Duke Energy Indiana and Piedmont is a large accelerated filer, accelerated filer, non-accelerated filer, smaller reporting company, or 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.: 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 has filed a report on and attestation to its management’s assessment of the effectiveness of its internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firm that prepared or issued its audit report.  If securities are registered pursuant to Section 12(b) of the Act, indicate by check mark whether the financial statements of the registrant included in the filing reflect the correction of an error to previously issued financial statements.  Indicate by check mark whether any of those error corrections are restatements that required a recovery analysis of incentive-based compensation received by any of the registrant’s executive officers during the relevant recovery period pursuant to §240.10D-1(b).  Indicate by check mark whether each of the registrants is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes  No  Estimated aggregate market value of the common equity held by nonaffiliates of Duke Energy at June 30, 2022. Number of shares of Common Stock, $0.001 par value, outstanding at January 31, 2023. $82,471,565 770,080,285 DOCUMENTS INCORPORATED BY REFERENCE Portions of the Duke Energy definitive proxy statement for the 2023 Annual Meeting of the Shareholders or an amendment to this Annual Report are incorporated by reference into PART III, Items 10, 11 and 13 hereof. This combined Form 10-K 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 I(1)(a) and (b) of Form 10-K and are, therefore, filing this Form 10-K with the reduced disclosure format specified in General Instructions I(2) of Form 10-K. Auditor Firm ID: 34 Auditor Name: Deloitte & Touche LLP Auditor Location: Charlotte, NC CAUTIONARY NOTE 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. For details on the uncertainties that may cause our actual future results to be materially different than those expressed in our forward-looking statements, see our Form 10-K for the year ended December 31, 2022, and Quarterly Reports on Form 10-Q 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. Duke Energy expressly disclaims an obligation to publicly update or revise any forward-looking statements, whether as a result of new information, future events, or otherwise. NON-GAAP MEASURES Adjusted Earnings per Share (EPS) and credits, which management believes are not indicative of Duke Energy’s ongoing performance. Management believes the presentation of adjusted EPS provides useful information to investors, as it provides them with an additional relevant comparison of Duke Energy’s performance across periods. Management uses this non-GAAP financial measure for planning and forecasting and for reporting financial results to the Duke Energy Board of Directors, employees, stockholders, analysts and investors. Adjusted EPS is also used as a basis for employee incentive bonuses. The most directly comparable GAAP measure for adjusted EPS is reported basic EPS available to Duke Energy Corporation common stockholders. Special items included in the periods presented include the following items, which management believes do not reflect ongoing costs: • Workplace and workforce realignment represents costs attributable to business transformation, including long-term real estate strategy changes and workforce reduction. • Regulatory matters and litigation represents the net impact of charges related to Indiana court rulings on coal ash and other unrelated ongoing litigation. • Regulatory settlements represents an impairment charge related to the South Carolina Supreme Court decision on coal ash, insurance proceeds and Duke Energy Carolinas and Duke Energy Progress coal ash settlement. • Gas pipeline investments represents additional exit obligations related to ACP. Discontinued operations primarily includes results from Duke Energy’s Commercial Renewables Disposal Groups, including an estimated impairment on the sale of the business in 2022. Duke Energy’s 2022 Annual Report references adjusted EPS for the year-to-date periods ended December 31, 2022 and 2021 of $5.27 and $4.99, respectively. Duke Energy’s adjusted EPS may not be comparable to a similarly titled measure of another company because other entities may not calculate the measure in the same manner. The non-GAAP financial measure, adjusted EPS, represents basic EPS from continuing operations available to Duke Energy Corporation common stockholders (GAAP reported EPS), adjusted for the per share impact of special items. As discussed below, special items represent certain charges The following is a reconciliation of reported EPS to adjusted EPS for 2022 and 2021: (per share) Reported EPS Adjustments to Reported EPS: Workplace and Workforce realignment Regulatory Matters and Litigation Regulatory Settlements Gas Pipeline Investments Discontinued Operations Adjusted EPS Adjusted EPS Guidance Duke Energy’s 2022 Annual Report references Duke Energy’s revised forecasted 2022 adjusted earnings guidance and the 2023 adjusted EPS guidance range of $5.55 to $5.75 per share. In addition, the materials reference the long-term range of annual growth of 5% - 7%. Forecasted adjusted EPS is a non-GAAP financial measure as it represents basic EPS available to Duke Energy Corporation common stockholders (GAAP reported EPS), adjusted for the Years Ended December 31, 2022 3.17 $ 0.14 0.39 — — 1.57 5.27 $ 2021 $ 4.94 0.20 — 0.09 0.02 (0.26) $ 4.99 per share impact of special items (as discussed under Adjusted EPS). Due to the forward-looking nature of this non-GAAP financial measure for future periods, information to reconcile it to the most directly comparable GAAP financial measure is not available at this time, as management is unable to project all special items for future periods, such as legal settlements, the impact of regulatory orders or asset impairments. TABLE OF CONTENTS FORM 10-K FOR THE YEAR ENDED DECEMBER 31, 2022 Item CAUTIONARY STATEMENT REGARDING FORWARD-LOOKING INFORMATION GLOSSARY OF TERMS PART I. 1. BUSINESS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DUKE ENERGY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GENERAL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . BUSINESS SEGMENTS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . HUMAN CAPITAL MANAGEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . EXECUTIVE OFFICERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ENVIRONMENTAL MATTERS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DUKE ENERGY CAROLINAS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PROGRESS ENERGY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DUKE ENERGY PROGRESS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DUKE ENERGY FLORIDA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DUKE ENERGY OHIO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DUKE ENERGY INDIANA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PIEDMONT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1A. RISK FACTORS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1B. UNRESOLVED STAFF COMMENTS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PROPERTIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2. LEGAL PROCEEDINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3. MINE SAFETY DISCLOSURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4. 5 5 5 5 13 14 15 15 15 15 15 16 16 16 16 23 24 27 27 PART II. 5. 6. 7. MARKET FOR REGISTRANT’S COMMON EQUITY, RELATED STOCKHOLDER MATTERS AND ISSUER PURCHASES OF EQUITY SECURITIES . . . . . . . . . . . . . . . . . SELECTED FINANCIAL DATA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7A. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK . . . . . . . . . FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA . . . . . . . . . . . . . . . . . . . . . 8. CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON 9. ACCOUNTING AND FINANCIAL DISCLOSURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207 9A. CONTROLS AND PROCEDURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207 29 53 54 28 29 PART III. 10. DIRECTORS, EXECUTIVE OFFICERS AND CORPORATE GOVERNANCE . . . . . . . . . . . 209 EXECUTIVE COMPENSATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 209 11. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS 12. AND MANAGEMENT AND RELATED STOCKHOLDER MATTERS. . . . . . . . . . . . . . . . . 209 CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS AND DIRECTOR INDEPENDENCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 210 14. PRINCIPAL ACCOUNTING FEES AND SERVICES . . . . . . . . . . . . . . . . . . . . . . . . . . . 210 13. PART IV. 15. EXHIBITS AND FINANCIAL STATEMENT SCHEDULES. . . . . . . . . . . . . . . . . . . . . . . . 211 EXHIBIT INDEX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-1 SIGNATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-30 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 our carbon emission reduction goals; • State, federal and foreign legislative and regulatory initiatives, including costs of Page 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; • The impact of extraordinary external events, such as the pandemic health event resulting from COVID-19, 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 growth or decline in service territories or customer bases resulting from sustained downturns of the economy, reduced customer usage due to cost pressures from inflation or fuel costs, 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 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 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, 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; • 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, as well as the successful sale of the Commercial Renewables Disposal Groups; • 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 equity method investment carrying values; • Asset or business acquisitions and dispositions 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 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 The following terms or acronyms used in this Form 10-K are defined below: Term or Acronym Definition Term or Acronym Definition 2017 Settlement .............................. Second Revised and Restated Settlement CT .................................................... Combustion Turbine Agreement in 2017 among Duke Energy Florida, the Florida Office of Public Counsel and other customer advocates, 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 and Duke Energy ACP pipeline .................................... The approximately 600-mile canceled interstate natural gas pipeline AFS .................................................. Available for Sale AFUDC ............................................. Allowance for funds used during construction AMI .................................................. Advanced Metering Infrastructure AMT ................................................. Alternative Minimum Tax AOCI ................................................ Accumulated Other Comprehensive Income (Loss) ARO ................................................. Asset Retirement Obligation Audit Committee .............................. Audit Committee of the Board of Directors Belews Creek ................................... Belews Creek Steam Station Bison ............................................... Bison Insurance Company Limited Board of Directors ............................ Duke Energy Board of Directors Brunswick ....................................... Brunswick Nuclear Plant Cardinal ........................................... Cardinal Pipeline Company, LLC Catawba .......................................... Catawba Nuclear Station CC ................................................... Combined Cycle CCR ................................................. Coal Combustion Residuals CEP Rider ........................................ Duke Energy Ohio’s Capital Expenditure Program Rider Cinergy ............................................ Cinergy Corp. (collectively with its DATC................................................ Duke-American Transmission Company, LLC DECON............................................. A method of decommissioning in which structures, systems, and components that contain radioactive contamination are removed from a site and safely disposed at a commercially operated low-level waste disposal facility, or decontaminated to a level that permits the site to be released for unrestricted use shortly after it ceases operation DEFR ............................................... Duke Energy Florida Receivables, LLC Deloitte ............................................ Deloitte & Touche LLP, and the member firms of Deloitte Touche Tohmatsu and their respective affiliates DEPR ............................................... Duke Energy Progress Receivables, LLC DERF .................................................... Duke Energy Receivables Finance Company, LLC DOE ................................................. U.S. Department of Energy Dominion ......................................... Dominion Energy, Inc. Dth .................................................. Dekatherms Duke Energy ..................................... Duke Energy Corporation (collectively with its subsidiaries) Duke Energy Carolinas ..................... Duke Energy Carolinas, LLC Duke Energy Florida ......................... Duke Energy Florida, LLC Duke Energy Indiana ........................ Duke Energy Indiana, LLC Duke Energy Kentucky ...................... Duke Energy Kentucky, Inc. Duke Energy Ohio ............................. Duke Energy Ohio, Inc. Duke Energy Progress ...................... Duke Energy Progress, 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 East Bend ........................................ East Bend Generating Station EDIT................................................. Excess deferred income tax subsidiaries) EE .................................................... Energy efficiency Citrus County CC ............................. Citrus County Combined Cycle Facility CO2 .................................................. Carbon Dioxide Coal Ash Act .................................... North Carolina Coal Ash Management Act of 2014 the company .................................... Duke Energy Corporation and its subsidiaries Commercial Renewables Disposal Groups .............................. Commercial Renewables business segment, excluding the offshore wind contract for Carolina Long Bay, marketed as two separate disposal groups, the utility-scale solar and wind group and the distributed generation group EPA .................................................. U.S. Environmental Protection Agency EPS ................................................. Earnings Per Share ETR .................................................. Effective tax rate EU&I ................................................ Electric Utilities and Infrastructure Exchange Act ................................... Securities Exchange Act of 1934 FASB ............................................... Financial Accounting Standards Board FERC ............................................... Federal Energy Regulatory Commission Form S-3 ......................................... Registration statement FPSC ............................................... Florida Public Service Commission FTR .................................................. Financial transmission rights COVID-19 ........................................ Coronavirus Disease 2019 GAAP ............................................... Generally Accepted Accounting Principles in CPCN ............................................... Certificate of Public Convenience and Necessity CRC ................................................. Cinergy Receivables Company LLC Crystal River Unit 3 .......................... Crystal River Unit 3 Nuclear Plant the United States GAAP Reported Earnings .................. Net Income Available to Duke Energy Corporation common stockholders GAAP Reported EPS ......................... Basic EPS Available to Duke Energy Corporation common stockholders Term or Acronym Definition Term or Acronym Definition GHG ................................................. Greenhouse Gas PBR ................................................. Performance-based regulation GIC .................................................. GIC Private Limited, Singapore’s sovereign wealth fund and an experienced investor in U.S. infrastructure PGA ................................................. Purchased Gas Adjustments PHMSA ............................................ Pipeline and Hazardous Materials Safety Administration GU&I ................................................ Gas Utilities and Infrastructure GWh ................................................ Gigawatt-hour Hardy Storage .................................. Hardy Storage Company, LLC Harris .............................................. Shearon Harris Nuclear Plant HB 951 ............................................ The Energy Solutions for North Carolina, or House Bill 951, passed in October 2021 IMPA ................................................ Indiana Municipal Power Agency IMR ................................................. Integrity Management Rider IRP .................................................. Integrated Resource Plans IRS .................................................. Internal Revenue Service ISO .................................................. Independent System Operator ITC ................................................... Investment Tax Credit IURC ................................................ Indiana Utility Regulatory Commission Investment Trusts ............................ Grantor trusts of Duke Energy Progress, Duke Energy Florida and Duke Energy Indiana KO Transmission .............................. KO Transmission Company KPSC ............................................... Kentucky Public Service Commission LLC .................................................. Limited Liability Company McGuire ........................................... McGuire Nuclear Station 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 MISO ............................................... Midcontinent Independent System Operator, Inc. MTBE ............................................... Methyl tertiary butyl ether MW .................................................. Megawatt MWh ................................................ Megawatt-hour MYRP ............................................... Multiyear rate plans NCDEQ............................................. North Carolina Department of Environmental Quality NCUC............................................... North Carolina Utilities Commission NDTF ............................................... Nuclear decommissioning trust funds Piedmont ......................................... Piedmont Natural Gas Company, Inc. Pine Needle ..................................... Pine Needle LNG Company, LLC Pioneer ............................................ Pioneer Transmission, LLC PJM ................................................. PJM Interconnection, LLC PMPA ............................................... Piedmont Municipal Power Agency PISCC .............................................. Post-in-service carrying costs PPA.................................................. Purchase Power Agreement Progress Energy ............................... Progress Energy, Inc. PSCSC ............................................. Public Service Commission of South Carolina PTC .................................................. Production Tax Credits PUCO ............................................... Public Utilities Commission of Ohio PURPA ............................................. Public Utility Regulatory Policies Act of 1978 QF ................................................... Qualifying Facility REC ................................................. Renewable Energy Certificate Relative TSR .................................... TSR of Duke Energy stock relative to a predefined peer group Robinson ......................................... Robinson Nuclear Plant ROE ................................................. Return of equity ROU ................................................. Right-of-use RSU ................................................. Restricted Stock Unit RTO ................................................. Regional Transmission Organization Sabal Trail........................................ Sabal Trail Transmission, LLC SAFSTOR ......................................... A method of decommissioning in which a nuclear facility is placed and maintained in a condition that allows the facility to be safely stored and subsequently decontaminated to levels that permit release for unrestricted use SEC ................................................. Securities and Exchange Commission S&P ................................................. Standard & Poor’s Rating Services State utility commissions ................. NCUC, PSCSC, FPSC, PUCO, IURC, KPSC and TPUC (Collectively) State electric utility commissions..... NCUC, PSCSC, FPSC, PUCO, IURC and KPSC (Collectively) New Source Review ......................... Clean Air Act program that requires industrial State gas utility commissions .......... NCUC, PSCSC, PUCO, TPUC and KPSC facilities to install modern pollution control equipment when they are built or when making a change that increases emissions significantly NMC ................................................ National Methanol Company Subsidiary Registrants ..................... Duke Energy Carolinas, Progress Energy, (Collectively) Duke Energy Progress, Duke Energy Florida, Duke Energy Ohio, Duke Energy Indiana and Piedmont NOL ................................................. Net operating loss Sutton .............................................. L.V. Sutton Combined Cycle Plant NPNS ............................................... Normal purchase/normal sale the Tax Act ....................................... Tax Cuts and Jobs Act NRC ................................................. U.S. Nuclear Regulatory Commission TPUC ............................................... Tennessee Public Utility Commission NYSE ............................................... New York Stock Exchange TSR.................................................. Total shareholder return Oconee ............................................ Oconee Nuclear Station U.S. ................................................. United States OPEB ............................................... Other Post-Retirement Benefit Obligations VIE ................................................... Variable Interest Entity OVEC ............................................... Ohio Valley Electric Corporation W.S. Lee CC ..................................... William States Lee Combined Cycle Facility the Parent ........................................ Duke Energy Corporation holding company WVPA ............................................... Wabash Valley Power Association, Inc. During 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 was completed following two closings. Additionally, in November 2022, Duke Energy committed to a plan to sell the Commercial Renewables business segment, excluding the offshore wind contract for Carolina Long Bay, which was moved to EU&I. See Note 2 to the Consolidated Financial Statements, “Dispositions,” for additional information. EU&I is also a joint owner in certain electric transmission projects. EU&I has a 50% ownership interest in DATC, a partnership with American Transmission Company, formed to design, build and operate transmission infrastructure. DATC owns 72% of the transmission service rights to Path 15, an 84-mile transmission line in central California. EU&I also has a 50% ownership interest in Pioneer, which builds, owns and operates electric transmission facilities in North America. The following map shows the service territory for EU&I as of December 31, 2022. ITEM 1. BUSINESS DUKE ENERGY General Duke Energy was incorporated on May 3, 2005, and is an energy company headquartered in Charlotte, North Carolina, subject to regulation by the FERC and other regulatory agencies listed below. Duke Energy operates in the U.S. primarily through its direct and indirect subsidiaries. Certain Duke Energy subsidiaries are also Subsidiary Registrants, including Duke Energy Carolinas, Progress Energy, 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 its separate Subsidiary Registrants, which along with Duke Energy, are collectively referred to as the Duke Energy Registrants. The Duke Energy Registrants electronically file reports with the SEC, including Annual Reports on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K, proxy statements and amendments to such reports. The SEC maintains an internet site that contains reports, proxy and information statements and other information regarding issuers that file electronically with the SEC at sec.gov. Additionally, information about the Duke Energy Registrants, including reports filed with the SEC, is available through Duke Energy’s website at duke-energy.com. Such reports are accessible at no charge and are made available as soon as reasonably practicable after such material is filed with or furnished to the SEC. Business Segments Duke Energy’s segment structure includes two reportable business segments: Electric Utilities and Infrastructure (EU&I) and Gas Utilities and Infrastructure (GU&I). The remainder of Duke Energy’s operations is presented as Other. Commercial Renewables is reported as discontinued operations and is no longer a reportable segment beginning in the fourth quarter of 2022. See Note 2 for further details. Duke Energy’s chief operating decision-maker routinely reviews financial information about each of these business segments in deciding how to allocate resources and evaluate the performance of the business. For additional information on each of these business segments, including financial and geographic information, see Note 3 to the Consolidated Financial Statements, “Business Segments.” The following sections describe the business and operations of each of Duke Energy’s business segments, as well as Other. ELECTRIC UTILITIES AND INFRASTRUCTURE EU&I conducts operations primarily through the regulated public utilities of Duke Energy Carolinas, Duke Energy Progress, Duke Energy Florida, Duke Energy Indiana and Duke Energy Ohio. EU&I provides retail electric service through the generation, transmission, distribution and sale of electricity to approximately 8.2 million customers within the Southeast and Midwest regions of the U.S. The service territory is approximately 92,000 square miles across six states with a total estimated population of 26 million. The operations include electricity sold wholesale to municipalities, electric cooperative utilities and other load-serving entities. 5 PART IThe electric operations and investments in projects are subject to the rules and regulations of the FERC, the NRC, the NCUC, the PSCSC, the FPSC, the IURC, the PUCO and the KPSC. The following table represents the distribution of GWh billed sales by customer class for the year ended December 31, 2022. Duke Energy Carolinas Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana 33% 33% 23% 89% 11% 26% 22% 16% 64% 36% 47% 34% 8% 89% 11% 38% 38% 22% 98% 2% 30% 27% 28% 85% 15% 100% 100% 100% 100% 100% facilities necessary to generate, transmit, distribute and sell electricity. Services are priced by state commission-approved rates designed to include the costs of providing these services and a reasonable return on invested capital. This regulatory policy is intended to provide safe and reliable electricity at fair prices. In Ohio, EU&I conducts competitive auctions for electricity supply. The cost of energy purchased through these auctions is recovered from retail customers. EU&I earns retail margin in Ohio on the transmission and distribution of electricity, but not on the cost of the underlying energy. Competition in the regulated electric distribution business is primarily from the development and deployment of alternative energy sources including on-site generation from industrial customers and distributed generation, such as private solar, at residential, general service and/or industrial customer sites. Wholesale Duke Energy competes with other utilities and merchant generators for bulk power sales, sales to municipalities and cooperatives and wholesale transactions under primarily cost-based contracts approved by FERC. The principal factors in competing for these sales are availability of capacity and power, reliability of service and price. Prices are influenced primarily by market conditions and fuel costs. Increased competition in the wholesale electric utility industry and the availability of transmission access could affect EU&I’s load forecasts, plans for power supply and wholesale energy sales and related revenues. Wholesale energy sales will be impacted by the extent to which additional generation is available to sell to the wholesale market and the ability of EU&I to attract new customers and to retain existing customers. Energy Capacity and Resources EU&I owns approximately 49,870 MW of generation capacity. For additional information on owned generation facilities, see Item 2, “Properties.” Energy and capacity are also supplied through contracts with other generators and purchased on the open market. Factors that could cause EU&I to purchase power for its customers may include, but are not limited to, generating plant outages, extreme weather conditions, generation reliability, demand growth and price. EU&I has interconnections and arrangements with its neighboring utilities to facilitate planning, emergency assistance, sale and purchase of capacity and energy and reliability of power supply. EU&I’s generation portfolio is a balanced mix of energy resources having different operating characteristics and fuel sources designed to provide energy at the lowest possible cost to meet its obligation to serve retail customers. All options, including owned generation resources and purchased power opportunities, are continually evaluated on a real-time basis to select and dispatch the lowest-cost resources available to meet system load requirements. Residential General service Industrial Total retail sales Wholesale and other sales Total sales The number of residential and general service customers within the EU&I service territory is expected to increase over time. Sales growth is expected within the service territory but continues to be impacted by adoption of energy efficiencies and self-generation. Migration into EU&I’s service territories and continued remote work contributed to higher residential sales volumes in 2022 while higher data center usage contributed to growth in commercial sales volumes. This was partially offset by lower industrial sales volumes impacted by certain automotive customers experiencing supply chain constraints along with reduced volumes in the steel sector. The impact on customer’s usage from these factors and other potential economic dynamics continues to be monitored. Over the longer time frame, it is still expected that the continued adoption of more efficient housing and appliances will have a negative impact on average usage per residential customer over time. Seasonality and the Impact of Weather Revenues and costs are influenced by seasonal weather patterns. Peak sales of electricity occur during the summer and winter months, which results in higher revenue and cash flows during these periods. By contrast, lower sales of electricity occur during the spring and fall, allowing for scheduled plant maintenance. Residential and general service customers are more impacted by weather than industrial customers. Estimated weather impacts are based on actual current period weather compared to normal weather conditions. Normal weather conditions are defined as the long-term average of actual historical weather conditions. The estimated impact of weather on earnings is based on the temperature variances from a normal condition and customers’ historic usage patterns. The methodology used to estimate the impact of weather does not consider all variables that may impact customer response to weather conditions such as humidity in the summer or wind chill in the winter. The precision of this estimate may also be impacted by applying long-term weather trends to shorter-term periods. Heating degree days measure the variation in weather based on the extent the average daily temperature falls below a base temperature. Cooling degree days measure the variation in weather based on the extent the average daily temperature rises above the base temperature. Each degree of temperature below the base temperature counts as one heating degree day and each degree of temperature above the base temperature counts as one cooling degree day. Competition Retail EU&I’s businesses operate as the sole supplier of electricity within their service territories, with the exception of Ohio, which has a competitive electricity supply market for generation service. EU&I owns and operates 6 PART ISources of Electricity EU&I relies principally on natural gas, nuclear fuel and coal for its generation of electricity. The following table lists sources of electricity and fuel costs for the three years ended December 31, 2022. Natural gas and fuel oil(a) Nuclear(a) Coal(a) All fuels (cost based on weighted average)(a) Hydroelectric and solar(b) Total generation Purchased power and net interchange Total sources of energy Cost of Delivered Fuel per Net Kilowatt-hour Generated (Cents) 2022 6.35 0.58 3.43 3.75 2021 3.89 0.58 2.84 2.42 2020 2.55 0.58 2.99 1.91 Generation by Source 2022 34.2% 26.6% 13.5% 74.3% 1.5% 75.8% 24.2% 2021 31.8% 29.8% 18.2% 79.8% 1.5% 81.3% 18.7% 2020 31.3% 29.6% 18.1% 79.0% 1.9% 80.9% 19.1% 100.0% 100.0% 100.0% (a) Statistics related to all fuels reflect EU&I’s public utility ownership interest in jointly owned generation facilities. (b) Generating figures are net of output required to replenish pumped-storage facilities during off-peak periods. Natural Gas and Fuel Oil Natural gas and fuel oil supply, transportation and storage for EU&I’s generation fleet is purchased under standard industry agreements from various suppliers, including Piedmont. Natural gas supply agreements typically provide for a percentage of forecasted burns being procured over time, with varied expiration dates. Electric Utilities and Infrastructure believes it has access to an adequate supply of natural gas and fuel oil for the reasonably foreseeable future. EU&I has certain dual-fuel generating facilities that can operate utilizing both natural gas and fuel oil. The cost of EU&I’s natural gas and fuel oil is fixed price or determined by published market prices as reported in certain industry publications, plus any transportation and freight costs. Duke Energy Carolinas, Duke Energy Progress, Duke Energy Florida and Duke Energy Indiana use derivative instruments to manage a portion of their exposure to price fluctuations for natural gas. Duke Energy Florida has temporarily agreed to not hedge natural gas prices, but retains an ability to propose hedging again in annual fuel docket filings. EU&I has firm interstate and intrastate natural gas transportation agreements and storage agreements in place to support generation needed for load requirements. EU&I may purchase additional shorter-term natural gas transportation and utilize natural gas interruptible transportation agreements to support generation needed for load requirements. The EU&I natural gas plants are served by various supply zones and multiple pipelines. Nuclear The industrial processes for producing nuclear generating fuel generally involve the mining and milling of uranium ore to produce uranium concentrates and services to convert, enrich and fabricate fuel assemblies. EU&I has contracted for uranium materials and services to fuel its nuclear reactors. Uranium concentrates, conversion services and enrichment services are primarily met through a diversified portfolio of long-term supply contracts. The contracts are diversified by supplier, country of origin and pricing. EU&I staggers its contracting so that its portfolio of long-term contracts covers the majority of its fuel requirements in the near term and decreasing portions of its fuel requirements over time thereafter. Near-term requirements not met by long-term supply contracts have been and are expected to be fulfilled with spot market purchases. Due to the technical complexities of changing suppliers of fuel fabrication services, EU&I generally source these services to a single domestic supplier on a plant-by-plant basis using multiyear contracts. EU&I has entered into fuel contracts that cover 100% of its uranium concentrates through at least 2024, 100% of its conversion services through at least 2026, 100% of its enrichment services through at least 2026, and 100% of its fabrication services requirements for these plants through at least 2027. For future requirements not already covered under long-term contracts, EU&I believes it will be able to renew contracts as they expire or enter into similar contractual arrangements with other suppliers of nuclear fuel materials and services. Coal EU&I meets its coal demand through a portfolio of long-term purchase contracts and short-term spot market purchase agreements. Large amounts of coal are purchased under long-term contracts with mining operators who mine both underground and at the surface. EU&I uses spot market purchases to meet coal requirements not met by long-term contracts. Expiration dates for its long- term contracts, which may have various price adjustment provisions and market reopeners, range from 2023 to 2027 for Duke Energy Carolinas and Duke Energy Indiana, 2023 to 2024 for Duke Energy Progress and 2023 to 2025 for Duke Energy Florida and Duke Energy Ohio. EU&I expects to renew these contracts or enter into similar contracts with other suppliers as existing contracts expire, though prices will fluctuate over time as coal markets change. EU&I has an adequate supply of coal under contract to meet its risk management guidelines regarding projected future consumption. As a result of volatility in natural gas prices and the associated impacts on coal-fired dispatch within the generation fleet, coal inventories will continue to fluctuate. EU&I continues to actively manage its portfolio and has worked with suppliers to obtain increased flexibility in its coal contracts. Coal purchased for the Carolinas is primarily produced from mines in Central Appalachia, Northern Appalachia and the Illinois Basin. Coal purchased for Florida is primarily produced from mines in the Illinois Basin. Coal purchased for Kentucky is produced from mines along the Ohio River in Illinois, Ohio, West Virginia and Pennsylvania. Coal purchased for Indiana is primarily produced in Indiana and Illinois. There are adequate domestic coal reserves to serve EU&I’s coal generation needs through end of life. The current average sulfur content of coal purchased by Electric Utilities and Infrastructure is between 0.5% and 3.5% for Duke Energy Carolinas and Duke Energy Progress, and between 0.5% and 4% for Duke Energy Florida, Duke Energy Ohio and Duke Energy Indiana. EU&I’s environmental controls, in combination with the use of sulfur dioxide (SO2) emission allowances, enable EU&I to satisfy current SO2 emission limitations for its existing facilities. 7 PART IPurchased Power EU&I purchases a portion of its capacity and system requirements through purchase obligations, leases and purchase capacity contracts. EU&I believes The following table summarizes purchased power for the previous three years: it can obtain adequate purchased power capacity to meet future system load needs. However, during periods of high demand, the price and availability of purchased power may be significantly affected. Purchase obligations and leases (in millions of MWh)(a) Purchase capacity under contract (in MW)(b) (a) Represents approximately 16% of total system requirements for 2022, 14% for 2021 and 13% for 2020. (b) For 2022, 2021 and 2020, these agreements include approximately 412 MW of firm capacity under contract by Duke Energy Florida with QFs. 2022 41.2 4,028 2021 36.0 4,259 2020 32.7 4,716 Inventory EU&I must maintain an adequate stock of fuel and materials and supplies in order to ensure continuous operation of generating facilities and reliable delivery to customers. As of December 31, 2022, the inventory balance for EU&I was approximately $3.4 billion. For additional information on inventory, see Note 1 to the Consolidated Financial Statements, “Summary of Significant Accounting Policies.” Ash Basin Management During 2015, EPA issued regulations related to the management of CCR from power plants. These regulations classify CCR as nonhazardous waste under the Resource Conservation and Recovery Act (RCRA) and apply to electric generating sites with new and existing landfills and new and existing surface impoundments and establish requirements regarding landfill design, structural integrity design and assessment criteria for surface impoundments, groundwater monitoring, protection and remedial procedures and other operational and reporting procedures for the disposal and management of CCR. In addition to the federal regulations, CCR landfills and surface impoundments (ash basins or impoundments) will continue to be regulated by existing state laws, regulations and permits, such as the North Carolina Coal Ash Management Act of 2014 (Coal Ash Act). EU&I has and will periodically submit to applicable authorities required site-specific coal ash impoundment remediation or closure plans. Closure plans must be approved and all associated permits issued before any work can begin. Closure activities have begun in all of Duke Energy’s jurisdictions. Excavation began in 2015 at the four sites specified as high priority by the Coal Ash Act and at the W.S. Lee Steam Station site in South Carolina in connection with other legal requirements. Excavation at these sites involves movement of CCR materials to appropriate engineered off-site or on-site lined landfills or for reuse in an approved beneficial application. Duke Energy has completed excavation of coal ash at the four high-priority North Carolina sites. At other sites where CCR management is required, planning and closure methods have been studied and factored into the estimated retirement and management costs, and closure activities have commenced. The EPA CCR rule and the Coal Ash Act leave the decision on cost recovery determinations related to closure of coal ash surface impoundments to the normal ratemaking processes before utility regulatory commissions. Duke Energy’s electric utilities have included compliance costs associated with federal and state requirements in their respective rate proceedings. During 2017, Duke Energy Carolinas’ and Duke Energy Progress’ wholesale contracts were amended to include the recovery of expenditures related to AROs for the closure of coal ash basins. The amended contracts have retail disallowance parity or provisions limiting challenges to CCR cost recovery actions at FERC. FERC approved the amended wholesale rate schedules in 2017. For additional information on the ash basins and recovery, see Item 7, “Other Matters” and Notes 4, 5 and 10 to the Consolidated Financial Statements, “Regulatory Matters,” “Commitments and Contingencies” and “Asset Retirement Obligations,” respectively. Nuclear Matters Duke Energy owns, wholly or partially, 11 operating nuclear reactors located at six operating stations. The Crystal River Unit 3 permanently ceased operation in February 2013. Nuclear insurance includes: nuclear liability coverage; property damage coverage; nuclear accident decontamination and premature decommissioning coverage; and accidental outage coverage for losses in the event of a major accidental outage. Joint owners reimburse Duke Energy for certain expenses associated with nuclear insurance in accordance with joint owner agreements. The Price-Anderson Act requires plant owners to provide for public nuclear liability claims resulting from nuclear incidents to the maximum total financial protection liability, which is approximately $13.7 billion. For additional information on nuclear insurance, see Note 5 to the Consolidated Financial Statements, “Commitments and Contingencies.” Duke Energy has a significant future financial commitment to dispose of spent nuclear fuel and decommission and decontaminate each plant safely. The NCUC, PSCSC and FPSC require Duke Energy to update their cost estimates for decommissioning their nuclear plants every five years. The following table summarizes the fair value of NDTF investments and the most recent site-specific nuclear decommissioning cost studies. Decommissioning costs are stated in 2018 or 2019 dollars, depending on the year of the cost study, and include costs to decommission plant components not subject to radioactive contamination. (in millions) Duke Energy Duke Energy Carolinas(b)(c) Duke Energy Progress(d) Duke Energy Florida(e) NDTF(a) $ December 31, 2022 8,637 4,783 3,430 424 $ December 31, 2021 10,401 5,759 4,089 553 $ Decommissioning Costs(a) 9,105 4,365 4,181 559 Year of Cost Study 2018 or 2019 2018 2019 N/A (a) Amounts for Progress Energy equal the sum of Duke Energy Progress and Duke Energy Florida. (b) Decommissioning cost for Duke Energy Carolinas reflects its ownership interest in jointly owned reactors. Other joint owners are responsible for decommissioning costs related to their interest in the reactors. (c) Duke Energy Carolinas’ site-specific nuclear decommissioning cost study completed in 2018 was filed with the NCUC and PSCSC in 2019. A new funding study was also completed and filed with the NCUC and PSCSC in 2019. (d) Duke Energy Progress’ site-specific nuclear decommissioning cost study completed in 2019 was filed with the NCUC and PSCSC in March 2020. Duke Energy Progress also completed a funding study, which was filed with the NCUC and PSCSC in July 2020. In October 2021, Duke Energy Progress filed the 2019 nuclear decommissioning cost study with the FERC, as well as a revised date schedule for decommissioning expense to be collected from wholesale customers. The FERC accepted the filing, as filed on December 9, 2021. (e) During 2019, Duke Energy Florida reached an agreement to transfer decommissioning work for Crystal River Unit 3 to a third party and decommissioning costs are based on the agreement with this third party rather than a cost study. Regulatory approval was received from the NRC and the FPSC in April 2020 and August 2020, respectively. See Note 4 to the Consolidated Financial Statements, “Regulatory Matters,” for more information. 8 PART IThe NRC has acknowledged permanent cessation of operation and permanent removal of fuel from the reactor vessel at Crystal River Unit 3. Therefore, the license no longer authorizes operation of the reactor. For additional information on nuclear decommissioning activity, see Notes 4 and 10 to the Consolidated Financial Statements, “Regulatory Matters” and “Asset Retirement Obligations,” respectively. Regulation State The state electric utility commissions approve rates for Duke Energy’s retail electric service within their respective states. The state electric utility commissions, to varying degrees, have authority over the construction and operation of EU&I’s generating facilities. CPCNs issued by the state electric utility commissions, as applicable, authorize EU&I to construct and operate its electric facilities and to sell electricity to retail and wholesale customers. Prior approval from the relevant state electric utility commission is required for the entities within EU&I to issue securities. The underlying concept of utility ratemaking is to set rates at a level that allows the utility to collect revenues equal to its cost of providing service plus earn a reasonable rate of return on its invested capital, including equity. In addition to rates approved in base rate cases, each of the state electric utility commissions allow recovery of certain costs through various cost recovery clauses to the extent the respective commission determines in periodic hearings that such costs, including any past over or under-recovered costs, are prudent. Fuel, fuel-related costs and certain purchased power costs are eligible for recovery by EU&I. EU&I uses coal, hydroelectric, natural gas, oil, renewable generation and nuclear fuel to generate electricity, thereby maintaining a diverse fuel mix that helps mitigate the impact of cost increases in any one fuel. Due to the associated regulatory treatment and the method allowed for recovery, changes in fuel costs from year to year have no material impact on operating results of EU&I, unless a commission finds a portion of such costs to have been imprudent. However, delays between the expenditure for fuel costs and recovery from customers can adversely impact the timing of cash flows of EU&I. The NCUC, PSCSC, FPSC and FERC have allowed EU&I to recover estimated decommissioning costs through retail and wholesale rates over the expected remaining service periods of their nuclear stations. EU&I believes the decommissioning costs being recovered through rates, when coupled with the existing fund balances and expected fund earnings, will be sufficient to provide for the cost of future decommissioning. For additional information, see Note 10 to the Consolidated Financial Statements, “Asset Retirement Obligations.” The Nuclear Waste Policy Act of 1982 (as amended) provides the framework for development by the federal government of interim storage and permanent disposal facilities for high-level radioactive waste materials. The government has not yet developed a storage facility or disposal capacity, so EU&I will continue to store spent fuel on its reactor sites. Under federal law, the DOE is responsible for the selection and construction of a facility for the permanent disposal of spent nuclear fuel and high-level radioactive waste. The DOE terminated the project to license and develop a geologic repository at Yucca Mountain, Nevada in 2010, and is currently taking no action to fulfill its responsibilities to dispose of spent fuel. Until the DOE begins to accept the spent nuclear fuel, Duke Energy Carolinas, Duke Energy Progress and Duke Energy Florida will continue to safely manage their spent nuclear fuel. Under current regulatory guidelines, Harris has sufficient storage capacity in its spent fuel pools through the expiration of its renewed operating license. With certain modifications and approvals by the NRC to expand the on-site dry cask storage facilities, spent nuclear fuel dry storage facilities will be sufficient to provide storage space of spent fuel through the expiration of the operating licenses, including any license renewals, for Brunswick, Catawba, McGuire, Oconee and Robinson. Crystal River Unit 3 ceased operation in 2013 and was placed in a SAFSTOR condition in January 2018. As of January 2018, all spent fuel at Crystal River Unit 3 has been transferred from the spent fuel pool to dry storage at an on-site independent spent fuel storage installation. During 2020, the NRC and the FPSC approved an agreement to transfer ownership of spent fuel for Crystal River Unit 3 to a third party. See Note 4 to the Consolidated Financial Statements, “Regulatory Matters,” for more information. The nuclear power industry faces uncertainties with respect to the cost and long-term availability of disposal sites for spent nuclear fuel and other radioactive waste, compliance with changing regulatory requirements, capital outlays for modifications and new plant construction. EU&I is subject to the jurisdiction of the NRC for the design, construction and operation of its nuclear generating facilities. The following table includes the current year of expiration of nuclear operating licenses for nuclear stations in operation. In June 2021, Duke Energy Carolinas filed a subsequent license renewal application for the Oconee Nuclear Station (ONS) with the U.S. Nuclear Regulatory Commission to renew ONS’s operating license for an additional 20 years. Duke Energy has announced its intention to seek 20-year operating license renewals for each of the reactors it operates in Duke Energy Carolinas and Duke Energy Progress. See Note 4 to the Consolidated Financial Statements, “Regulatory Matters,” for additional information. Unit Duke Energy Carolinas Catawba Units 1 and 2 McGuire Unit 1 McGuire Unit 2 Oconee Units 1 and 2 Oconee Unit 3 Duke Energy Progress Brunswick Unit 1 Brunswick Unit 2 Harris Robinson Year of Expiration 2043 2041 2043 2033 2034 2036 2034 2046 2030 9 PART IThe table below reflects significant electric rate case applications approved and effective in the past three years and applications currently pending approval. Approved Rate Cases: Duke Energy Progress 2022 South Carolina Rate Case Duke Energy Ohio 2021 Ohio Electric Rate Case Duke Energy Progress 2019 North Carolina Rate Case Duke Energy Carolinas 2019 North Carolina Rate Case Duke Energy Indiana 2019 Indiana Rate Case(a) Duke Energy Kentucky 2019 Kentucky Electric Rate Case Pending Rate Cases: Duke Energy Carolinas 2023 North Carolina Rate Case(b) Duke Energy Kentucky 2022 Kentucky Electric Rate Case Duke Energy Progress 2022 North Carolina Rate Case(c) Annual Increase (Decrease) (in millions) Regulatory Body Return on Equity Equity Component of Capital Structure Effective Date PSCSC PUCO NCUC NCUC IURC KPSC NCUC KPSC NCUC $ $ 52 23 178 33 146 24 823 75 615 9.6% 9.5% 9.6% 9.6% 9.7% 9.25% 10.4% 10.35% 10.4% 52.43% 50.5% 52% 52% 54% 48.23% 53% 52.5% 53% 4/1/2023 1/3/2023 6/1/2021 6/1/2021 7/30/2020 5/1/2020 1/1/2024 7/15/2023 10/1/2023 (a) Step 1 rates are approximately 75% of the total and became effective July 30, 2020. Step 2 rates are approximately 25% of the total rate case increase. They were approved on July 28, 2021, and implemented in August 2021. (b) Year 1 rates are approximately 61% of the total. Year 2 rates are approximately 21% of the total rate case increase. Year 3 rates are approximately 18% of the total rate increase. (c) Year 1 rates are approximately 53% of the total. Year 2 rates are approximately 25% of the total rate case increase. Year 3 rates are approximately 22% of the total rate increase. Implementation of interim rates is planned for June 1, 2023. GAS UTILITIES AND INFRASTRUCTURE GU&I conducts natural gas operations primarily through the regulated public utilities of Piedmont, Duke Energy Ohio and Duke Energy Kentucky. The natural gas operations are subject to the rules and regulations of the NCUC, PSCSC, PUCO, KPSC, TPUC, PHMSA and the FERC. GU&I serves residential, commercial, industrial and power generation natural gas customers, including customers served by municipalities who are wholesale customers. GU&I has over 1.6 million total customers, including 1.1 million customers located in North Carolina, South Carolina and Tennessee, and an additional 550,000 customers located within southwestern Ohio and northern Kentucky. In the Carolinas, Ohio and Kentucky, the service areas are comprised of numerous cities, towns and communities. In Tennessee, the service area is the metropolitan area of Nashville. The following map shows the service territory and investments in operating pipelines for GU&I as of December 31, 2022. Additionally, in January 2021, Duke Energy Florida filed a settlement agreement with the FPSC that will allow annual increases to its base rates, an agreed upon return on equity (“ROE”) and includes a base rate stay-out provision through 2024, among other provisions. 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. For more information on rate matters and other regulatory proceedings, see Note 4 to the Consolidated Financial Statements, “Regulatory Matters.” Federal The FERC approves EU&I’s cost-based rates for electric sales to certain power and transmission wholesale customers. Regulations of FERC and the state electric utility commissions govern access to regulated electric and other data by nonregulated entities and services provided between regulated and nonregulated energy affiliates. These regulations affect the activities of nonregulated affiliates with EU&I. RTOs PJM and MISO are the ISOs and FERC-approved RTOs for the regions in which Duke Energy Ohio and Duke Energy Indiana operate. PJM and MISO operate energy, capacity and other markets, and control the day-to-day operations of bulk power systems through central dispatch. Duke Energy Ohio is a member of PJM and Duke Energy Indiana is a member of MISO. Transmission owners in these RTOs have turned over control of their transmission facilities and their transmission systems are currently under the dispatch control of the RTOs. Transmission service is provided on a regionwide, open-access basis using the transmission facilities of the RTO members at rates based on the costs of transmission service. Environmental EU&I is subject to the jurisdiction of the EPA and state and local environmental agencies. For a discussion of environmental regulation, see “Environmental Matters” in this section. See the “Other Matters” section of Item 7 Management’s Discussion and Analysis for a discussion about potential Global Climate Change legislation and other EPA regulations under development and the potential impacts such legislation and regulation could have on Duke Energy’s operations. 10 PART IThe number of residential, commercial and industrial customers within the GU&I service territory is expected to increase over time. Average usage per residential customer is expected to remain flat or decline for the foreseeable future; however, decoupled rates in North Carolina and various rate design mechanisms in other jurisdictions partially mitigate the impact of the declining usage per customer on overall profitability. GU&I also has investments in various pipeline transmission projects, renewable natural gas projects and natural gas storage facilities. Natural Gas for Retail Distribution GU&I is responsible for the distribution of natural gas to retail customers in its North Carolina, South Carolina, Tennessee, Ohio and Kentucky service territories. GU&I’s natural gas procurement strategy is to contract primarily with major and independent producers and marketers for natural gas supply. It also purchases a diverse portfolio of transportation and storage service from interstate pipelines. This strategy allows GU&I to assure reliable natural gas supply and transportation for its firm customers during peak winter conditions. When firm pipeline services or contracted natural gas supplies are temporarily not needed due to market demand fluctuations, GU&I may release these services and supplies in the secondary market under FERC-approved capacity release provisions or make wholesale secondary market sales. In 2022, firm supply purchase commitment agreements provided 100% of the natural gas supply for both Piedmont and Duke Energy Ohio. Approximately 90% of forecasted demand was under contract prior to the winter heating season, with firm daily spot purchases making up the balance. Impact of Weather GU&I revenues are generally protected from the impact of weather fluctuations due to the regulatory mechanisms that are available in most service territories. In North Carolina, margin decoupling provides protection from both weather and other usage variations like conservation for residential and small and medium general service customers. Margin decoupling provides a set margin per customer independent of actual usage. In South Carolina, Tennessee and Kentucky, weather normalization adjusts revenues either up or down depending on how much warmer or colder than normal a given month has been. Weather normalization adjustments occur from November through March in South Carolina, from October through April in Tennessee and from November through April in Kentucky. Duke Energy Ohio collects most of its non-fuel revenue through a fixed monthly charge that is not impacted by usage fluctuations that result from weather changes or conservation. Competition GU&I’s businesses operate as the sole provider of natural gas service within their retail service territories. GU&I owns and operates facilities necessary to transport and distribute natural gas. GU&I earns retail margin on the transmission and distribution of natural gas and not on the cost of the underlying commodity. Services are priced by state commission-approved rates designed to include the costs of providing these services and a reasonable return on invested capital. This regulatory policy is intended to provide safe and reliable natural gas service at fair prices. In residential, commercial and industrial customer markets, natural gas distribution operations compete with other companies that supply energy, primarily electric companies, propane and fuel oil dealers, renewable energy providers and coal companies in relation to sources of energy for electric power plants, as well as nuclear energy. A significant competitive factor is price. GU&I’s primary product competition is with electricity for heating, water heating and cooking. Increases in the price of natural gas or decreases in the price of other energy sources could negatively impact competitive position by decreasing the price benefits of natural gas to the consumer. In the case of industrial customers, such as manufacturing plants, adverse economic or market conditions, including higher natural gas costs, could cause these customers to suspend business operations or to use alternative sources of energy in favor of energy sources with lower per-unit costs. Higher natural gas costs or decreases in the price of other energy sources may allow competition from alternative energy sources for applications that have traditionally used natural gas, encouraging some customers to move away from natural gas-fired equipment to equipment fueled by other energy sources. Competition between natural gas and other forms of energy is also based on efficiency, performance, reliability, safety and other non-price factors. Technological improvements in other energy sources and events that impair the public perception of the non-price attributes of natural gas could erode our competitive advantage. These factors in turn could decrease the demand for natural gas, impair our ability to attract new customers and cause existing customers to switch to other forms of energy or to bypass our systems in favor of alternative competitive sources. This could result in slow or no customer growth and could cause customers to reduce or cease using our product, thereby reducing our ability to make capital expenditures and otherwise grow our business, adversely affecting our earnings. Natural Gas Investments Duke Energy, through its GU&I segment, has a 7.5% equity ownership interest in Sabal Trail. Sabal Trail is a joint venture that owns the Sabal Trail Natural Gas Pipeline (Sabal Trail pipeline) to transport natural gas to Florida, regulated by FERC. The Sabal Trail Phase I mainline was placed into service in July 2017 and traverses Alabama, Georgia and Florida. The remaining lateral line to the Duke Energy Florida’s Citrus County CC was placed into service in March 2018. Phase II of Sabal Trail went into service in May 2020, adding approximately 200,000 Dth of capacity to the Sabal Trail pipeline. Duke Energy, through its GU&I segment, has a 47% equity ownership interest in ACP, which planned to build the ACP pipeline, an approximately 600-mile interstate natural gas pipeline. The ACP pipeline was intended to transport diverse natural gas supplies into southeastern markets and would be regulated by FERC. Dominion Energy owns 53% of ACP and was contracted to construct and operate the ACP pipeline upon completion. On July 5, 2020, Dominion announced a sale of substantially all of its natural gas transmission and storage segment assets, which were critical to the ACP pipeline. Further, permitting delays and legal challenges had materially affected the timing and cost of the pipeline. As a result, Duke Energy determined that they would no longer invest in the construction of the ACP pipeline. Duke Energy, also through its GU&I segment, has investments in various renewable natural gas joint ventures. GU&I has a 21.49% equity ownership interest in Cardinal, an intrastate pipeline located in North Carolina regulated by the NCUC, a 45% equity ownership in Pine Needle, an interstate liquefied natural gas storage facility located in North Carolina and a 50% equity ownership interest in Hardy Storage, an underground interstate natural gas storage facility located in Hardy and Hampshire counties in West Virginia. Pine Needle and Hardy Storage are regulated by FERC. KO Transmission Company (KO Transmission), a wholly owned subsidiary of Duke Energy Ohio, is an interstate pipeline company engaged in the business of transporting natural gas and is subject to the rules and regulations of FERC. KO Transmission’s 90-mile pipeline supplies natural gas to Duke Energy Ohio and interconnects with the Columbia Gulf Transmission pipeline and Tennessee Gas Pipeline. An approximately 70-mile portion of KO Transmission’s pipeline facilities is co-owned by Columbia Gas Transmission, LLC. KO Transmission sold all of its pipeline facilities and related real property to Columbia Gas Transmission, LLC on February 1, 2023, for approximately book value. 11 PART ISee Notes 4, 13 and 18 to the Consolidated Financial Statements, “Regulatory Matters,” “Investments in Unconsolidated Affiliates” and “Variable Interest Entities,” respectively, for further information on Duke Energy’s and GU&I’s natural gas investments. Inventory GU&I must maintain adequate natural gas inventory in order to provide reliable delivery to customers. As of December 31, 2022, the inventory balance for GU&I was $185 million. For more information on inventory, see Note 1 to the Consolidated Financial Statements, “Summary of Significant Accounting Policies.” Regulation State The state gas utility commissions approve rates for Duke Energy’s retail natural gas service within their respective states. The state gas utility commissions, to varying degrees, have authority over the construction and operation of GU&I’s natural gas distribution facilities. CPCNs issued by the state gas utility commissions or other government agencies, as applicable, authorize GU&I to construct and operate its natural gas distribution facilities and to sell natural gas to retail and wholesale customers. Prior approval from the relevant state gas utility commission is required for GU&I to issue securities. The underlying concept of utility ratemaking is to set rates at a level that allows the utility to collect revenues equal to its cost of providing service plus a reasonable rate of return on its invested capital, including equity. In addition to amounts collected from customers through approved base rates, each of the state gas utility commissions allow recovery of certain costs through various cost recovery clauses to the extent the respective commission determines in periodic hearings that such costs, including any past over- or under-recovered costs, are prudent. Natural gas costs are eligible for recovery by GU&I. Due to the associated regulatory treatment and the method allowed for recovery, changes in natural gas costs from year to year have no material impact on operating results of GU&I, unless a commission finds a portion of such costs to have been imprudent. However, delays between the expenditure for natural gas and recovery from customers can adversely impact the timing of cash flows of GU&I. The following table summarizes certain components underlying recently approved and effective base rates or rate stabilization filings in the last three years and applications currently pending approval. Approved Rate Cases: Piedmont 2020 Tennessee Natural Gas Base Rate Case Piedmont 2021 North Carolina Natural Gas Base Rate Case Piedmont 2021 South Carolina Rate Stabilization Adjustment Filing Duke Energy Kentucky 2021 Natural Gas Base Rate Case(a) Piedmont 2022 South Carolina Natural Gas Base Rate Case(b) Pending Rate Cases: Duke Energy Ohio 2022 Natural Gas Base Rate Case Annual Increase (Decrease) (in millions) $ 16 67 7 9 2 49 Return on Equity Equity Component of Capital Structure Effective Date January 2021 November 2021 November 2021 January 2022 November 2022 50.5% 51.6% 52.2% 51.3% 52.2% 52.3% April 2023 9.8% 9.6% 9.8% 9.38% 9.3% 10.3% (a) An ROE of 9.375% for natural gas base rates and 9.3% for natural gas riders was approved. (b) Under the rate stabilization adjustment (RSA) mechanism, Piedmont resets rates in South Carolina based on updated costs and revenues on an annual basis. The SC RSA filing for 2022 did not reset the rates since Piedmont filed a General Rate Case in 2022. GU&I has an IMR mechanism in North Carolina designed to separately track and recover certain costs associated with capital investments incurred to comply with federal pipeline safety and integrity programs. Piedmont has withdrawn from the Tennessee IMR mechanism subsequent to the authorization of the Tennessee Annual Review Mechanism effective January 2022. The following table summarizes information related to the recently approved IMR filing. (in millions) Piedmont 2022 IMR Filing – North Carolina Cumulative Investment $ 213 Annual Revenues Effective Date $ 20 December 2022 In Ohio, GU&I has a Capital Expenditure Program Rider (CEP Rider) designed to recover costs between rate cases on PUCO approved capital expenditures. Duke Energy Ohio submits a filing each year for incremental investments to increase the revenue requirement up to the cap of approximately $7 million. The cumulative investment under the CEP Rider is $359 million with total annual revenue requirement of $70 million. For more information on rate matters and other regulatory proceedings, see Note 4 to the Consolidated Financial Statements, “Regulatory Matters.” the prices paid for, and the terms and conditions of service for the interstate transportation and storage of natural gas. • Regulations of the PHMSA affect the design, construction, operation, maintenance, integrity, safety and security of natural gas distribution and transmission systems. • Regulations of the EPA relate to the environment including proposed air emissions regulations that would expand to include emissions of methane. Federal GU&I is subject to various federal regulations, including regulations that are particular to the natural gas industry. These federal regulations include but are not limited to the following: • Regulations of the FERC affect the certification and siting of new interstate natural gas pipeline projects, the purchase and sale of, 12 Regulations of the FERC and the state gas utility commissions govern access to regulated natural gas and other data by nonregulated entities and services provided between regulated and nonregulated energy affiliates. These regulations affect the activities of nonregulated affiliates with Gas Utilities and Infrastructure. PART IEnvironmental GU&I is subject to the jurisdiction of the EPA and state and local environmental agencies. For a discussion of environmental regulation, see “Environmental Matters” in this section. See “Other Matters” section of Item 7 Management’s Discussion and Analysis for a discussion about potential Global Climate Change legislation and other EPA regulations under development and the potential impacts such legislation and regulation could have on Duke Energy’s operations. OTHER The remainder of Duke Energy’s operations is presented as Other. While it is not a business segment, Other primarily includes interest expense on holding company debt, unallocated corporate costs, amounts related to certain companywide initiatives and contributions made to the Duke Energy Foundation. Other also includes Bison and an investment in NMC. The Duke Energy Foundation is a nonprofit organization funded by Duke Energy shareholders that makes charitable contributions to selected nonprofits and government subdivisions. Bison, a wholly owned subsidiary of Duke Energy, is a captive insurance company with the principal activity of providing Duke Energy subsidiaries with indemnification for financial losses primarily related to property, workers’ compensation and general liability. Duke Energy owns a 17.5% equity interest in NMC. The joint venture company has production facilities in Jubail, Saudi Arabia, where it manufactures certain petrochemicals and plastics. The company annually produces approximately 1 million metric tons each of MTBE and methanol and has the capacity to produce 50,000 metric tons of polyacetal. The main feedstocks to produce these products are natural gas and butane. Duke Energy records the investment activity of NMC using the equity method of accounting and retains 25% of NMC’s board of directors’ representation and voting rights. Human Capital Management Governance Our employees are critical to the success of our company. Our Human Resources organization is responsible for our human capital management strategy, which includes recruiting and hiring, onboarding and training, diversity and inclusion, workforce planning, talent and succession planning, performance management and employee development. Key areas of focus include fostering a high-performance and inclusive culture built on strong leadership and highly engaged and diverse employees, building a pipeline of skilled workers and ensuring knowledge transfer as employees retire. Our Board of Directors provides oversight on certain human capital management matters, primarily through the Compensation and People Development Committee, which is responsible for reviewing strategies and policies related to human capital management, including with respect to matters such as diversity and inclusion, employee engagement and talent development. Employees On December 31, 2022, Duke Energy had a total of 27,859 full-time, part-time and temporary employees, the majority of which were full-time employees. The total includes 5,081 employees who are represented by labor unions under various collective bargaining agreements that generally cover wages, benefits, working practices, and other terms and conditions of employment. Compensation The company seeks to attract and retain an appropriately qualified workforce and leverages Duke Energy’s leadership imperatives to foster a culture focused on customers, innovation, and highly engaged employees. Our compensation program is market driven and designed to link pay to performance with the goal of attracting and retaining talented employees, rewarding individual performance, and encouraging long-term commitment to our business. Our market competitive pay program includes short-term and long-term variable pay components that help to align the interests of Duke Energy to our customers and shareholders. In addition to competitive base pay, we provide eligible employees with compensation and benefits under a variety of plans and programs, including health care benefits, retirement savings, pension, health savings and flexible spending accounts, wellness, family leaves, employee assistance, as well as other benefits including a charitable matching program. The company is committed to providing market competitive, fair, and equitable compensation and regularly conducts internal pay equity reviews, and benchmarking against peer companies to ensure our pay is competitive. Diversity and Inclusion Duke Energy is committed to continuing to build a diverse workforce that reflects the communities we serve while strengthening a culture of inclusion where employees and customers feel respected and valued. Our Enterprise Diversity and Inclusion Council, chaired by our Chief Operating Officer in 2022, monitors the effectiveness and execution of our diversity and inclusion strategy and programs. Employee-led councils are also embedded across the company in our business units and focus on the specific diversity and inclusion needs of the business and help drive inclusion deeper into the employee experience. Leaders and individual contributors also have the opportunity to participate in voluntary diversity and inclusion training programs and facilitated conversations on insightful topics offered to further our commitment to building and enabling an inclusive work environment. Our aspirational goals include achieving workforce representation of at least 25% female and 20% racial and ethnic diversity. We continue to strive toward reaching these aspirational goals and as of December 31, 2022, our workforce consisted of approximately 23.9% female and 20.4% racial and ethnic diversity. The company also has 10 Employee Resource Groups (ERGs), with 37 chapters and more than 6,500 employees participating. ERGs are networks of employees formed around a common dimension of diversity whose goals and objectives align with the company’s goals and objectives. These groups focus on employee professional development and networking, community outreach, cultural awareness, recruiting and retention. They also serve as a resource to the company for advocacy and community outreach and improving customer service through innovation. ERG-sponsored forums include networking events, mentoring, scholarship banquets for aspiring college students, and workshops on topics such as time management, stress reduction, career planning and work-life balance. Our ERGs are open to all employees. Among other efforts, the company has developed partnerships with community organizations, community colleges and historically Black colleges and universities to support our strategy of building a diverse and highly skilled talent pipeline. Operational Excellence The foundation for our growth and success is our continued focus on operational excellence, the leading indicator of which is safety. As such, the safety of our workforce remains our top priority. The company closely monitors the total incident case rate (TICR), which is a metric based on strict OSHA definitions that measures the number of occupational injuries and illnesses per 100 employees. This objective emphasizes our focus on achieving an event-free and injury-free workplace. As an indication of our commitment to safety, we include safety metrics in both the short-term and long-term incentive plans based on the TICR for employees. Our employees delivered strong safety results in 2022, consistent with our industry-leading performance levels from 2017 through 2021. 13 PART IInformation about Our Executive Officers The following table sets forth the individuals who currently serve as executive officers. Executive officers serve until their successors are duly elected or appointed. Name Lynn J. Good Brian D. Savoy Kodwo Ghartey-Tagoe T. Preston Gillespie R. Alexander Glenn Dhiaa M. Jamil Julia S. Janson Cynthia S. Lee Ronald R. Reising Louis E. Renjel Harry K. Sideris Steven K. Young Age(a) Current and Recent Positions Held 63 47 59 60 57 66 58 56 62 49 52 64 Chair, President and Chief Executive Officer. Ms. Good has served as Chair, President and Chief Executive Officer of Duke Energy since January 1, 2016, and was Vice Chairman, President and Chief Executive Officer of Duke Energy from July 2013 through December 2015. Prior to that, she served as Executive Vice President and Chief Financial Officer since 2009. Executive Vice President and Chief Financial Officer. Mr. Savoy assumed the position of Executive Vice President and Chief Financial Officer in September 2022. Prior to that, he held the position of Executive Vice President, Chief Strategy and Commercial Officer from May 2021 through August 2022; Senior Vice President, Chief Transformation and Administrative Officer from October 2019 through April 2021; Senior Vice President, Business Transformation and Technology from May 2016 through September 2019; Senior Vice President, Controller and Chief Accounting Officer from September 2013 to May 2016; Director, Forecasting and Analysis from 2009 to September 2013; and Vice President and Controller of the Commercial Power segment from 2006 to 2009. Executive Vice President, Chief Legal Officer and Corporate Secretary. Mr. Ghartey-Tagoe assumed the position of Executive Vice President, Chief Legal Officer and Corporate Secretary in May 2020. He was appointed Executive Vice President and Chief Legal Officer in October 2019 after serving as President, South Carolina since 2017. Mr. Ghartey-Tagoe joined Duke Energy in 2002, and has held numerous management positions in Duke Energy’s Legal Department, including Duke Energy’s Senior Vice President of State and Federal Regulatory Legal Support. Executive Vice President, Chief Generation Officer and Enterprise Operational Excellence. Mr. Gillespie assumed the position of Executive Vice President, Chief Generation Officer and Enterprise Operational Excellence in January 2023. Prior to that, Mr. Gillespie served as the Chief Generation Officer since 2020. Senior Vice President and Chief Executive Officer, Duke Energy Florida and Midwest. Mr. Glenn assumed his current position in May 2021. Prior to that, Mr. Glenn served as Senior Vice President, State and Federal Regulatory Legal Support since 2017 and as State President of Duke Energy Florida’s operations from 2012 to 2017. Executive Vice President and Chief Operating Officer. Mr. Jamil assumed the role of Chief Operating Officer in May 2016. Prior to his current position, he held the title Executive Vice President and President, Regulated Generation and Transmission since June 2015. Prior to that, he served as Executive Vice President and President, Regulated Generation since August 2014. He served as Executive Vice President and President of Duke Energy Nuclear from March 2013 to August 2014, and was Chief Nuclear Officer from February 2008 to February 2013. Executive Vice President and Chief Executive Officer, Duke Energy Carolinas. Ms. Janson assumed her current position in May 2021. Prior to that she held the position of Executive Vice President, External Affairs and President, Carolinas Region since October 2019 and the position of Executive Vice President, External Affairs and Chief Legal Officer since November 2018. She originally assumed the position of Executive Vice President, Chief Legal Officer and Corporate Secretary in December 2012, and then assumed the responsibilities for External Affairs in February 2016. Vice President, Chief Accounting Officer and Controller. Ms. Lee assumed her role as Vice President, Chief Accounting Officer and Controller in May 2021. Prior to that, she served as Director, Investor Relations since June 2019 and in various roles within the Corporate Controller’s organization after joining the Corporation and its affiliates in 2002. Senior Vice President and Chief Human Resources Officer. Mr. Reising assumed his current position in July 2020. Prior to that, he served as Senior Vice President of Operations Support since 2014. Prior to that, he served as Chief Procurement Officer since 2006. Senior Vice President, External Affairs and Communications. Mr. Renjel assumed his current position in May 2021. Prior to that, he served as Senior Vice President of Federal Government and Corporate Affairs since 2019, and as Vice President, Federal Government Affairs and Strategic Policy since he joined Duke Energy in March 2017 until 2019. Prior to joining Duke Energy, Mr. Renjel served as Vice President of Strategic Infrastructure since 2009 for CSX Corp and as their Director of Environmental and Government Affairs from 2006 to 2008. Executive Vice President, Customer Experience, Solutions and Services. Mr. Sideris assumed his current position in October 2019. Prior to that, he served as Senior Vice President and Chief Distribution Officer since June 2018; State President, Florida from January 2017 to June 2018; Senior Vice President of Environmental Health and Safety from August 2014 to January 2017; and Vice President of Power Generations for the company’s Fossil/Hydro Operations in the western portions of North Carolina and South Carolina from July 2012 to August 2014. Executive Vice President, Chief Strategy and Commercial Officer. Mr. Young assumed the position of Executive Vice President, Chief Strategy and Commercial Officer in September 2022. Prior to that, he held the position of Executive Vice President and Chief Financial Officer from August 2013 through August 2022; Vice President, Chief Accounting Officer and Controller, assuming the role of Chief Accounting Officer in July 2012 and the role of Controller in December 2006. (a) The ages of the officers provided are as of January 31, 2023. There are no family relationships between any of the executive officers, nor any arrangement or understanding between any executive officer and any other person involved in officer selection. 14 PART IEnvironmental Matters DUKE ENERGY CAROLINAS The Duke Energy Registrants are subject to federal, state and local laws and regulations with regard to air and water quality, hazardous and solid waste disposal and other environmental matters. Environmental laws and regulations affecting the Duke Energy Registrants include, but are not limited to: • The Clean Air Act, as well as state laws and regulations impacting air emissions, including State Implementation Plans related to existing and new national ambient air quality standards for ozone and particulate matter. Owners and/or operators of air emission sources are responsible for obtaining permits and for annual compliance and reporting. • The Clean Water Act, which requires permits for facilities that discharge wastewaters into navigable waters. Duke Energy Carolinas is a regulated public utility primarily engaged in the generation, transmission, distribution and sale of electricity in portions of North Carolina and South Carolina. Duke Energy Carolinas’ service area covers approximately 24,000 square miles and supplies electric service to 2.8 million residential, commercial and industrial customers. For information about Duke Energy Carolinas’ generating facilities, see Item 2, “Properties.” Duke Energy Carolinas is subject to the regulatory provisions of the NCUC, PSCSC, NRC and FERC. Substantially all of Duke Energy Carolinas’ operations are regulated and qualify for regulatory accounting. Duke Energy Carolinas operates one reportable business segment, EU&I. For additional information regarding this business segment, including financial information, see Note 3 to the Consolidated Financial Statements, “Business Segments.” • The Comprehensive Environmental Response, Compensation and PROGRESS ENERGY Liability Act, which can require any individual or entity that currently owns or in the past owned or operated a disposal site, as well as transporters or generators of hazardous substances sent to a disposal site, to share in remediation costs. • The National Environmental Policy Act, which requires federal agencies to consider potential environmental impacts in their permitting and licensing decisions, including siting approvals. Progress Energy is a public utility holding company primarily engaged in the regulated electric utility business and is subject to regulation by the FERC. Progress Energy conducts operations through its wholly owned subsidiaries, Duke Energy Progress and Duke Energy Florida. When discussing Progress Energy’s financial information, it necessarily includes the results of Duke Energy Progress and Duke Energy Florida. Substantially all of Progress Energy’s operations are regulated and qualify • Coal Ash Act, as amended, which establishes requirements regarding the use and closure of existing ash basins, the disposal of ash at active coal plants and the handling of surface water and groundwater impacts from ash basins in North Carolina. for regulatory accounting. Progress Energy operates one reportable business segment, EU&I. For additional information regarding this business segment, including financial information, see Note 3 to the Consolidated Financial Statements, “Business Segments.” • The Solid Waste Disposal Act, as amended by RCRA, which creates a framework for the proper management of hazardous and nonhazardous solid waste; classifies CCR as nonhazardous waste; and establishes standards for landfill and surface impoundment placement, design, operation and closure, groundwater monitoring, corrective action, and post-closure care. • The Toxic Substances Control Act, which gives EPA the authority to require reporting, recordkeeping and testing requirements, and to place restrictions relating to chemical substances and/or mixtures, including polychlorinated biphenyls. For more information on environmental matters, see Notes 5 and 10 to the Consolidated Financial Statements, “Commitments and Contingencies – Environmental” and “Asset Retirement Obligations,” respectively, and the “Other Matters” section of Item 7 Management’s Discussion and Analysis. Except as otherwise described in these sections, costs to comply with current federal, state and local provisions regulating the discharge of materials into the environment or other potential costs related to protecting the environment are incorporated into the routine cost structure of our various business segments and are not expected to have a material adverse effect on the competitive position, consolidated results of operations, cash flows or financial position of the Duke Energy Registrants. The “Other Matters” section of Item 7 Management’s Discussion and Analysis includes more information on certain environmental regulations and a discussion of Global Climate Change including the potential impact of current and future legislation related to GHG emissions on the Duke Energy Registrants’ operations. Recently passed and potential future environmental statutes and regulations could have a significant impact on the Duke Energy Registrants’ results of operations, cash flows or financial position. However, if and when such statutes and regulations become effective, the Duke Energy Registrants will seek appropriate regulatory recovery of costs to comply within its regulated operations. DUKE ENERGY PROGRESS Duke Energy Progress is a regulated public utility primarily engaged in the generation, transmission, distribution and sale of electricity in portions of North Carolina and South Carolina. Duke Energy Progress’ service area covers approximately 29,000 square miles and supplies electric service to approximately 1.7 million residential, commercial and industrial customers. For information about Duke Energy Progress’ generating facilities, see Item 2, “Properties.” Duke Energy Progress is subject to the regulatory provisions of the NCUC, PSCSC, NRC and FERC. Substantially all of Duke Energy Progress’ operations are regulated and qualify for regulatory accounting. Duke Energy Progress operates one reportable business segment, EU&I. For additional information regarding this business segment, including financial information, see Note 3 to the Consolidated Financial Statements, “Business Segments.” DUKE ENERGY FLORIDA Duke Energy Florida is a regulated public utility primarily engaged in the generation, transmission, distribution and sale of electricity in portions of Florida. Duke Energy Florida’s service area covers approximately 13,000 square miles and supplies electric service to approximately 1.9 million residential, commercial and industrial customers. For information about Duke Energy Florida’s generating facilities, see Item 2, “Properties.” Duke Energy Florida is subject to the regulatory provisions of the FPSC, NRC and FERC. Substantially all of Duke Energy Florida’s operations are regulated and qualify for regulatory accounting. Duke Energy Florida operates one reportable business segment, EU&I. For additional information regarding this business segment, including financial information, see Note 3 to the Consolidated Financial Statements, “Business Segments.” 15 PART IDUKE ENERGY OHIO financial information, see Note 3 to the Consolidated Financial Statements, “Business Segments.” Duke Energy Ohio is a regulated public utility primarily engaged in the transmission and distribution of electricity in portions of Ohio and Kentucky, in the generation and sale of electricity in portions of Kentucky and the transportation and sale of natural gas in portions of Ohio and Kentucky. Duke Energy Ohio also conducts competitive auctions for retail electricity supply in Ohio whereby recovery of the energy price is from retail customers. Operations in Kentucky are conducted through its wholly owned subsidiary, Duke Energy Kentucky. References herein to Duke Energy Ohio include Duke Energy Ohio and its subsidiaries, unless otherwise noted. Duke Energy Ohio is subject to the regulatory provisions of the PUCO, KPSC, PHMSA and FERC. Duke Energy Ohio’s service area covers approximately 3,000 square miles and supplies electric service to approximately 900,000 residential, commercial and industrial customers and provides transmission and distribution services for natural gas to approximately 550,000 customers. For information about Duke Energy Ohio’s generating facilities, see Item 2, “Properties.” KO Transmission, a wholly owned subsidiary of Duke Energy Ohio, is an interstate pipeline company engaged in the business of transporting natural gas and is subject to the rules and regulations of FERC. KO Transmission’s 90-mile pipeline supplies natural gas to Duke Energy Ohio and interconnects with the Columbia Gulf Transmission pipeline and Tennessee Gas Pipeline. An approximately 70-mile portion of KO Transmission’s pipeline facilities is co-owned by Columbia Gas Transmission, LLC. KO Transmission sold all of its pipeline facilities and related real property to Columbia Gas Transmission, LLC on February 1, 2023, for approximately book value. Substantially all of Duke Energy Ohio’s operations are regulated and qualify for regulatory accounting. Duke Energy Ohio has two reportable segments, EU&I and GU&I. For additional information on these business segments, including financial information, see Note 3 to the Consolidated Financial Statements, “Business Segments.” DUKE ENERGY INDIANA Duke Energy Indiana is a regulated public utility primarily engaged in the generation, transmission, distribution and sale of electricity in portions of Indiana. Duke Energy Indiana’s service area covers 23,000 square miles and supplies electric service to 890,000 residential, commercial and industrial customers. For information about Duke Energy Indiana’s generating facilities, see Item 2, “Properties.” Duke Energy Indiana is subject to the regulatory provisions of the IURC and FERC. In 2021, Duke Energy executed an agreement providing for an investment in Duke Energy Indiana by GIC. The transaction was completed following two closings. For additional information, see Note 2 to the Consolidated Financial Statements, “Dispositions.” Substantially all of Duke Energy Indiana’s operations are regulated and qualify for regulatory accounting. Duke Energy Indiana operates one reportable business segment, EU&I. For additional information regarding this business segment, including financial information, see Note 3 to the Consolidated Financial Statements, “Business Segments.” PIEDMONT Piedmont is a regulated public utility primarily engaged in the distribution of natural gas to over 1.1 million residential, commercial, industrial and power generation customers in portions of North Carolina, South Carolina and Tennessee, including customers served by municipalities who are wholesale customers. For information about Piedmont’s natural gas distribution facilities, see Item 2, “Properties.” Piedmont is subject to the regulatory provisions of the NCUC, PSCSC, TPUC, PHMSA and FERC. Substantially all of Piedmont’s operations are regulated and qualify for regulatory accounting. Piedmont operates one reportable business segment, GU&I. For additional information regarding this business segment, including 16 ITEM 1A. RISK FACTORS In addition to other disclosures within this Form 10-K, including “Management’s Discussion and Analysis of Financial Condition and Results of Operations – Matters Impacting Future Results” for each registrant in Item 7, and other documents filed with the SEC from time to time, the following factors should be considered in evaluating Duke Energy and its subsidiaries. Such factors could affect actual results of operations and cause results to differ substantially from those currently expected or sought. Unless otherwise indicated, risk factors discussed below generally relate to risks associated with all of the Duke Energy Registrants. Risks identified at the Subsidiary Registrant level are generally applicable to Duke Energy. BUSINESS STRATEGY RISKS Duke Energy’s future results could be adversely affected if it is unable to implement its business strategy including achieving its carbon emissions reduction goals. Duke Energy’s results of operations depend, in significant part, on the extent to which it can implement its business strategy successfully. Duke Energy’s clean energy transition, which includes achieving net-zero carbon emissions from electricity generation by 2050, modernizing the regulatory construct, transforming the customer experience, and digital transformation, is subject to business, policy, regulatory, technology, economic and competitive uncertainties and contingencies, many of which are beyond its control and may make those goals difficult to achieve. Federal or state policies could be enacted that restrict the availability of fuels or generation technologies, such as natural gas or nuclear power, that enable Duke Energy to reduce its carbon emissions. Supportive policies may be needed to facilitate the siting and cost recovery of transmission and distribution upgrades needed to accommodate the build out of large volumes of renewables and energy storage. Further, the approval of our state regulators will be necessary for the company to continue to retire existing carbon emitting assets or make investments in new generating capacity. The company may be constrained by the ability to procure resources or labor needed to build new generation at a reasonable price as well as to construct projects on time. In addition, new technologies that are not yet commercially available or are unproven at utility scale will likely be needed including new resources capable of following electric load over long durations such as advanced nuclear, hydrogen and long-duration storage, If these technologies are not developed or are not available at reasonable prices, or if we invest in early stage technologies that are then supplanted by technological breakthroughs, Duke Energy’s ability to achieve a net-zero target by 2050 at a cost-effective price could be at risk. Achieving our carbon reduction goals will require continued operation of our existing carbon-free technologies including nuclear and renewables. The rapid transition to and expansion of certain low-carbon resources, such as renewables without cost-effective storage, may challenge our ability to meet customer expectations of reliability in a carbon constrained environment. Our nuclear fleet is central to our ability to meet these objectives and customer expectations. We are continuing to seek to renew the operating licenses of the 11 reactors we operate at six nuclear stations for an additional 20 years, extending their operating lives to and beyond midcentury. Failure to receive approval from the NRC for the relicensing of any of these reactors could affect our ability to achieve a net-zero target by 2050. As a consequence, Duke Energy may not be able to fully implement or realize the anticipated results of its energy transition strategy, which may have an adverse effect on its financial condition. PART IREGULATORY, LEGISLATIVE AND LEGAL RISKS The Duke Energy Registrants’ regulated utility revenues, earnings and results of operations are dependent on state legislation and regulation that affect electric generation, electric and natural gas transmission, distribution and related activities, which may limit their ability to recover costs. The Duke Energy Registrants’ regulated electric and natural gas utility businesses are regulated on a cost-of-service/rate-of-return basis subject to statutes and regulatory commission rules and procedures of North Carolina, South Carolina, Florida, Ohio, Tennessee, Indiana and Kentucky. If the Duke Energy Registrants’ regulated utility earnings exceed the returns established by the state utility commissions, retail electric and natural gas rates may be subject to review and possible reduction by the commissions, which may decrease the Duke Energy Registrants’ earnings. Additionally, if regulatory or legislative bodies do not allow recovery of costs incurred in providing service, or do not do so on a timely basis, the Duke Energy Registrants’ earnings could be negatively impacted. Differences in regulation between jurisdictions with concurrent operations, such as North Carolina and South Carolina in Duke Energy Carolinas’ and Duke Energy Progress’ service territory, may also result in failure to recover costs. If legislative and regulatory structures were to evolve in such a way that the Duke Energy Registrants’ exclusive rights to serve their regulated customers were eroded, their earnings could be negatively impacted. Federal and state regulations, laws, commercialization and reduction of costs and other efforts designed to promote and expand the use of EE measures and distributed generation technologies, such as private solar and battery storage, in Duke Energy service territories could reduce recovery of fixed costs in Duke Energy service territories or result in customers leaving the electric distribution system and an increase in customer net energy metering, which allows customers with private solar to receive bill credits for surplus power at the full retail amount. Over time, customer adoption of these technologies could result in Duke Energy not being able to fully recover the costs and investment in generation. State regulators have approved various mechanisms to stabilize natural gas utility margins, including margin decoupling in North Carolina and rate stabilization in South Carolina. State regulators have approved other margin stabilizing mechanisms that, for example, allow for recovery of margin losses associated with negotiated transactions designed to retain large volume customers that could use alternative fuels or that may otherwise directly access natural gas supply through their own connection to an interstate pipeline. If regulators decided to discontinue the Duke Energy Registrants’ use of tariff mechanisms, it would negatively impact results of operations, financial position and cash flows. In addition, regulatory authorities also review whether natural gas costs are prudently incurred and can disallow the recovery of a portion of natural gas costs that the Duke Energy Registrants seek to recover from customers, which would adversely impact earnings. The rates that the Duke Energy Registrants’ regulated utility businesses are allowed to charge are established by state utility commissions in rate case proceedings, which may limit their ability to recover costs and earn an appropriate return on investment. The rates that the Duke Energy Registrants’ regulated utility businesses are allowed to charge significantly influences the results of operations, financial position and cash flows of the Duke Energy Registrants. The regulation of the rates that the regulated utility businesses charge customers is determined, in large part, by state utility commissions in rate case proceedings. Negative decisions made by these regulators, or by any court on appeal of a rate case proceeding, have, and in the future could have, a material adverse effect on the Duke Energy Registrants’ results of operations, financial position or cash flows and affect the ability of the Duke Energy Registrants to recover costs and an appropriate return on the significant infrastructure investments being made. Deregulation or restructuring in the electric industry may result in increased competition and unrecovered costs that could adversely affect the Duke Energy Registrants’ results of operations, financial position or cash flows and their utility businesses. Increased competition resulting from deregulation or restructuring legislation could have a significant adverse impact on the Duke Energy Registrants’ results of operations, financial position or cash flows and their utility businesses. If the retail jurisdictions served by the Duke Energy Registrants become subject to deregulation, the impairment of assets, loss of retail customers, lower profit margins or increased costs of capital, and recovery of stranded costs could have a significant adverse financial impact on the Duke Energy Registrants. Stranded costs primarily include the generation assets of the Duke Energy Registrants whose value in a competitive marketplace may be less than their current book value, as well as above-market purchased power commitments from QFs from whom the Duke Energy Registrants are legally obligated to purchase energy at an avoided cost rate under PURPA. The Duke Energy Registrants cannot predict the extent and timing of entry by additional competitors into the electric markets. The Duke Energy Registrants cannot predict if or when they will be subject to changes in legislation or regulation, nor can they predict the impact of these changes on their results of operations, financial position or cash flows. The Duke Energy Registrants’ businesses are subject to extensive federal regulation and a wide variety of laws and governmental policies, including taxes and environmental regulations, that may change over time in ways that affect operations and costs. The Duke Energy Registrants are subject to regulations under a wide variety of U.S. federal and state regulations and policies, including by FERC, NRC, EPA and various other federal agencies as well as the North American Electric Reliability Corporation. Regulation affects almost every aspect of the Duke Energy Registrants’ businesses, including, among other things, their ability to: take fundamental business management actions; determine the terms and rates of transmission and distribution services; make acquisitions; issue equity or debt securities; engage in transactions with other subsidiaries and affiliates; and pay dividends upstream to the Duke Energy Registrants. Changes to federal regulations are continuous and ongoing. There can be no assurance that laws, regulations and policies will not be changed in ways that result in material modifications of business models and objectives or affect returns on investment by restricting activities and products, subjecting them to escalating costs, causing delays, or prohibiting them outright. The Duke Energy Registrants are subject to numerous environmental laws and regulations requiring significant capital expenditures that can increase the cost of operations, and which may impact or limit business plans, or cause exposure to environmental liabilities. The Duke Energy Registrants are subject to numerous environmental laws and regulations affecting many aspects of their present and future operations, including CCRs, air emissions, water quality, wastewater discharges, solid waste and hazardous waste. These laws and regulations can result in increased capital, operating and other costs. These laws and regulations generally require the Duke Energy Registrants to obtain and comply with a wide variety of environmental licenses, permits, inspections and other approvals. Compliance with environmental laws and regulations can require significant expenditures, including expenditures for cleanup costs and damages arising from contaminated properties. Failure to comply with environmental regulations may result in the imposition of fines, penalties and injunctive measures affecting operating assets. The steps the Duke Energy Registrants could be required to take to ensure their facilities are in compliance could be prohibitively expensive. As a result, the Duke Energy Registrants may be required to shut 17 PART Idown or alter the operation of their facilities, which may cause the Duke Energy Registrants to incur losses. Further, the Duke Energy Registrants may not be successful in recovering capital and operating costs incurred to comply with new environmental regulations through existing regulatory rate structures and their contracts with customers. Also, the Duke Energy Registrants may not be able to obtain or maintain from time to time all required environmental regulatory approvals for their operating assets or development projects. Delays in obtaining any required environmental regulatory approvals, failure to obtain and comply with them or changes in environmental laws or regulations to more stringent compliance levels could result in additional costs of operation for existing facilities or development of new facilities being prevented, delayed or subject to additional costs. Although it is not expected that the costs to comply with current environmental regulations will have a material adverse effect on the Duke Energy Registrants’ results of operations, financial position and cash flows due to regulatory cost recovery, the Duke Energy Registrants are at risk that the costs of complying with environmental regulations in the future will have such an effect. The EPA has enacted or proposed federal regulations governing the management of cooling water intake structures, wastewater and CO2 emissions. New state legislation could impose carbon reduction goals that are more aggressive than the company’s plans. These regulations may require the Duke Energy Registrants to make additional capital expenditures and increase operating and maintenance costs. The Duke Energy Registrants’ operations, capital expenditures and financial results may be affected by regulatory changes related to the impacts of global climate change. There is continued concern, and increasing activism, both nationally and internationally, about climate change. The EPA and state regulators have, and may adopt and implement, additional regulations to restrict emissions of GHGs to address global climate change. Certain local and state jurisdictions have also enacted laws to restrict or prevent new natural gas infrastructure. Increased regulation of GHG emissions could impose significant additional costs on the Duke Energy Registrants’ electric and natural gas operations, their suppliers and customers and affect demand for energy conservation and renewable products, which could impact both our electric and natural gas businesses. Regulatory changes could also result in generation facilities to be retired earlier than planned to meet our net-zero 2050 goal. Though we would plan to seek cost recovery for investments related to GHG emissions reductions through regulatory rate structures, changes in the regulatory climate could result in the delay in or failure to fully recover such costs and investment in generation. OPERATIONAL RISKS The Duke Energy Registrants’ results of operations may be negatively affected by overall market, economic and other conditions that are beyond their control. Sustained downturns or sluggishness in the economy generally affect the markets in which the Duke Energy Registrants operate and negatively influence operations. Declines in demand for electricity or natural gas as a result of economic downturns in the Duke Energy Registrants’ regulated service territories will reduce overall sales and lessen cash flows, especially as industrial customers reduce production and, therefore, consumption of electricity and the use of natural gas. Although the Duke Energy Registrants’ regulated electric and natural gas businesses are subject to regulated allowable rates of return and recovery of certain costs, such as fuel and purchased natural gas costs, under periodic adjustment clauses, overall declines in electricity or natural gas sold as a result of economic downturn or recession could reduce revenues and cash flows, thereby diminishing results of operations. A continuation of adverse economic conditions including economic downturn or high commodity prices could also negatively impact the financial stability of certain of our customers and result in their inability to pay for electric and natural gas services. This could lead to increased bad debt expense and higher allowance for doubtful account reserves for the Duke Energy Registrants and result in delayed or unrecovered operating costs and lower financial results. Additionally, prolonged economic downturns that negatively impact the Duke Energy Registrants’ results of operations and cash flows could result in future material impairment charges to write-down the carrying value of certain assets, including goodwill, to their respective fair values. The Duke Energy Registrants also monitor the impacts of inflation on the procurement of goods and services and seek to minimize its effects in future periods through pricing strategies, productivity improvements, and cost reductions. Rapidly rising prices as a result of inflation or other factors may impact the ability of the company to recover costs timely or execute on its business strategy including the achievement of growth objectives. The Duke Energy Registrants sell electricity into the spot market or other competitive power markets on a contractual basis. With respect to such transactions, the Duke Energy Registrants are not guaranteed any rate of return on their capital investments through mandated rates, and revenues and results of operations are likely to depend, in large part, upon prevailing market prices. These market prices may fluctuate substantially over relatively short periods of time and could negatively impact the company’s ability to accurately forecast the financial impact or reduce the Duke Energy Registrants’ revenues and margins, thereby diminishing results of operations. Factors that could impact sales volumes, generation of electricity and market prices at which the Duke Energy Registrants are able to sell electricity and natural gas are as follows: • weather conditions, including abnormally mild winter or summer weather that cause lower energy or natural gas usage for heating or cooling purposes, as applicable, and periods of low rainfall that decrease the ability to operate facilities in an economical manner; • supply of and demand for energy commodities; • transmission or transportation constraints or inefficiencies that impact nonregulated energy operations; • availability of purchased power; • availability of competitively priced alternative energy sources, which are preferred by some customers over electricity produced from coal, nuclear or natural gas plants, and customer usage of energy-efficient equipment that reduces energy demand; • natural gas, crude oil and refined products production levels and prices; • ability to procure satisfactory levels of inventory, including materials, supplies, and fuel such as coal, natural gas and uranium; and • capacity and transmission service into, or out of, the Duke Energy Registrants’ markets. Natural disasters or operational accidents may adversely affect the Duke Energy Registrants’ operating results. Natural disasters or operational accidents within the company or industry (such as forest fires, earthquakes, hurricanes or natural gas transmission pipeline explosions) could have direct or indirect impacts to the Duke Energy Registrants or to key contractors and suppliers. Further, the generation of electricity and the transportation and storage of natural gas involve inherent operating risks that may result in accidents involving serious injury or loss of life, environmental damage or property damage. Such events could impact the Duke Energy Registrants through changes to policies, laws and regulations whose compliance costs have a significant impact on the Duke Energy Registrants’ results of operations, financial position and cash flows. In addition, if a serious operational accident were to occur, existing insurance policies may not cover all of the potential exposures or the actual amount of loss incurred, 18 PART Iincluding potential litigation awards. Any losses not covered by insurance, or any increases in the cost of applicable insurance as a result of such accident, could have a material adverse effect on the results of operations, financial position, cash flows and reputation of the Duke Energy Registrants. The Duke Energy Registrants’ results of operations, financial position and cash flows may be negatively affected by a lack of growth or slower growth in the number of customers, or decline in customer demand or number of customers. The reputation and financial condition of the Duke Energy Registrants could be negatively impacted due to their obligations to comply with federal and state regulations, laws, and other legal requirements that govern the operations, assessments, storage, closure, remediation, disposal and monitoring relating to CCR, the high costs and new rate impacts associated with implementing these new CCR-related requirements and the strategies and methods necessary to implement these requirements in compliance with these legal obligations. As a result of electricity produced for decades at coal-fired power plants, the Duke Energy Registrants manage large amounts of CCR that are primarily stored in dry storage within landfills or combined with water in surface impoundments, all in compliance with applicable regulatory requirements. A CCR-related operational incident could have a material adverse impact on the reputation and results of operations, financial position and cash flows of the Duke Energy Registrants. During 2015, EPA regulations were enacted related to the management of CCR from power plants. These regulations classify CCR as nonhazardous waste under the RCRA and apply to electric generating sites with new and existing landfills and, new and existing surface impoundments, and establish requirements regarding landfill design, structural integrity design and assessment criteria for surface impoundments, groundwater monitoring, protection and remedial procedures and other operational and reporting procedures for the disposal and management of CCR. In addition to the federal regulations, CCR landfills and surface impoundments will continue to be regulated by existing state laws, regulations and permits, as well as additional legal requirements that may be imposed in the future, such as the settlement reached with the NCDEQ to excavate seven of the nine remaining coal ash basins in North Carolina, and partially excavate the remaining two, and the EPA’s January 11, 2022, issuance of a letter interpreting the CCR Rule, including its applicability and closure provisions. These federal and state laws, regulations and other legal requirements may require or result in additional expenditures, including increased operating and maintenance costs, which could affect the results of operations, financial position and cash flows of the Duke Energy Registrants. The Duke Energy Registrants will continue to seek full cost recovery for expenditures through the normal ratemaking process with state and federal utility commissions, who permit recovery in rates of necessary and prudently incurred costs associated with the Duke Energy Registrants’ regulated operations, and through other wholesale contracts with terms that contemplate recovery of such costs, although there is no guarantee of full cost recovery. In addition, the timing for and amount of recovery of such costs could have a material adverse impact on Duke Energy’s cash flows. The Duke Energy Registrants have recognized significant AROs related to these CCR-related requirements. Closure activities began in 2015 at the four sites specified as high priority by the Coal Ash Act and at the W.S. Lee Steam Station site in South Carolina in connection with other legal requirements. Excavation at these sites involves movement of CCR materials to off-site locations for use as structural fill, to appropriately engineered off-site or on-site lined landfills or conversion of the ash for beneficial use. Duke Energy has completed excavation of coal ash at the four high-priority North Carolina sites. At other sites, planning and closure methods have been studied and factored into the estimated retirement and management costs, and closure activities have commenced. As the closure and CCR management work progresses and final closure plans and corrective action measures are developed and approved at each site, the scope and complexity of work and the amount of CCR material could be greater than estimates and could, therefore, materially increase compliance expenditures and rate impacts. Growth in customer accounts and growth of customer usage each directly influence demand for electricity and natural gas and the need for additional power generation and delivery facilities. Customer growth and customer usage are affected by several factors outside the control of the Duke Energy Registrants, such as mandated EE measures, demand-side management goals, distributed generation resources and economic and demographic conditions, such as inflation and interest rate volatility, population changes, job and income growth, housing starts, new business formation and the overall level of economic activity. In addition, certain regulatory and legislative bodies have passed legislation implementing the extension of certain tax credits to be used toward the costs of residential solar installation or have introduced or are considering requirements and/or incentives to reduce energy consumption by certain dates in response to concerns related to climate change. Additionally, technological advances driven by federal laws mandating new levels of EE in end-use electric and natural gas devices or other improvements in or applications of technology could lead to declines in per capita energy consumption. Advances in distributed generation technologies that produce power, including fuel cells, microturbines, wind turbines and solar cells, may reduce the cost of alternative methods of producing power to a level competitive with central power station electric production utilized by the Duke Energy Registrants. In addition, the electrification of buildings and appliances currently relying on natural gas could reduce the number of customers in our natural gas distribution business. Some or all of these factors could result in a lack of growth or decline in customer demand for electricity or number of customers and may cause the failure of the Duke Energy Registrants to fully realize anticipated benefits from significant capital investments and expenditures, which could have a material adverse effect on their results of operations, financial position and cash flows. Furthermore, the Duke Energy Registrants currently have EE riders in place to recover the cost of EE programs in North Carolina, South Carolina, Florida, Indiana, Ohio and Kentucky. Should the Duke Energy Registrants be required to invest in conservation measures that result in reduced sales from effective conservation, regulatory lag in adjusting rates for the impact of these measures could have a negative financial impact. The Duke Energy Registrants future results of operations may be impacted by changing expectations and demands including heightened emphasis on environmental, social and governance concerns. Duke Energy’s ability to execute its strategy and achieve anticipated financial outcomes are influenced by the expectations of our customers, regulators, investors, and stakeholders. Those expectations are based in part on the core fundamentals of reliability and affordability but are also increasingly focused on our ability to meet rapidly changing demands for new and varied products, services and offerings. Additionally, the risks of global climate change continues to shape our customers’ sustainability goals and energy needs as well as the investment and financing criteria of investors. Failure to meet these increasing expectations or to adequately address the risks and external pressures from regulators, customers, investors and other stakeholders may impact Duke Energy’s reputation and affect its ability to achieve favorable outcomes in future rate cases and the results of operations for the Duke Energy Registrants. Furthermore, the increasing use of social media may accelerate and increase the potential scope of negative publicity we might receive and could increase the negative impact on our reputation, business, results of operations, and financial condition. As it relates to electric generation, a diversified fleet with increasingly clean generation resources may facilitate more efficient financing and lower costs. Conversely, jurisdictions utilizing more carbon-intensive generation such 19 PART Ias coal may experience difficulty attracting certain investors and obtaining the most economical financing terms available. Furthermore, with this heightened emphasis on environmental, social, and governance concerns, and climate change in particular, there is an increased risk of litigation, activism, and legislation from groups both in support of and opposed to various environmental, social and governance initiatives, which could cause delays and increase the costs of our clean energy transition. The Duke Energy Registrants’ operating results may fluctuate on a seasonal and quarterly basis and can be negatively affected by changes in weather conditions and severe weather, including extreme weather conditions and changes in weather patterns from climate change. Electric power generation and natural gas distribution are generally seasonal businesses. In most parts of the U.S., the demand for power peaks during the warmer summer months, with market prices also typically peaking at that time. In other areas, demand for power peaks during the winter. Demand for natural gas peaks during the winter months. Further, changing frequency or magnitude of extreme weather conditions such as hurricanes, droughts, heat waves, winter storms and severe weather, including from climate change, could cause these seasonal fluctuations to be more pronounced. As a result, the overall operating results of the Duke Energy Registrants’ businesses may fluctuate substantially on a seasonal and quarterly basis and thus make period- to-period comparison less relevant. Sustained severe drought conditions could impact generation by hydroelectric plants, as well as fossil and nuclear plant operations, as these facilities use water for cooling purposes and for the operation of environmental compliance equipment. Furthermore, destruction caused by severe weather events, such as hurricanes, flooding, tornadoes, severe thunderstorms, snow and ice storms, including from climate change, can result in lost operating revenues due to outages, property damage, including downed transmission and distribution lines, and additional and unexpected expenses to mitigate storm damage. The cost of storm restoration efforts may not be fully recoverable through the regulatory process. The Duke Energy Registrants’ sales may decrease if they are unable to gain adequate, reliable and affordable access to transmission assets. The Duke Energy Registrants depend on transmission and distribution facilities owned and operated by utilities and other energy companies to deliver electricity sold to the wholesale market. In addition, the growth of renewables and energy storage will put strains on existing transmission assets and require transmission and distribution upgrades. The FERC’s power transmission regulations require wholesale electric transmission services to be offered on an open-access, non-discriminatory basis. If transmission is disrupted, or if transmission capacity is inadequate, the Duke Energy Registrants’ ability to sell and deliver products may be hindered. The different regional power markets have changing regulatory structures, which could affect growth and performance in these regions. In addition, the ISOs who oversee the transmission systems in regional power markets have imposed in the past, and may impose in the future, price limitations and other mechanisms to address volatility in the power markets. These types of price limitations and other mechanisms may adversely impact the profitability of the Duke Energy Registrants’ wholesale power marketing business. The availability of adequate interstate pipeline transportation capacity and natural gas supply may decrease. The Duke Energy Registrants purchase almost all of their natural gas supply from interstate sources that must be transported to the applicable service territories. Interstate pipeline companies transport the natural gas to the Duke Energy Registrants’ systems under firm service agreements that are designed to meet the requirements of their core markets. A significant disruption to interstate pipelines capacity or reduction in natural gas supply due to events including, but not limited to, operational failures or disruptions, hurricanes, tornadoes, floods, freeze off of natural gas wells, terrorist or cyberattacks or other acts of war or legislative or regulatory actions or requirements, including remediation related to integrity inspections or regulations and laws enacted to address climate change, could reduce the normal interstate supply of natural gas and thereby reduce earnings. Moreover, if additional natural gas infrastructure, including, but not limited to, exploration and drilling rigs and platforms, processing and gathering systems, offshore pipelines, interstate pipelines and storage, cannot be built at a pace that meets demand, then growth opportunities could be limited. Fluctuations in commodity prices or availability may adversely affect various aspects of the Duke Energy Registrants’ operations as well as their results of operations, financial position and cash flows. The Duke Energy Registrants are exposed to the effects of market fluctuations in the price of natural gas, coal, fuel oil, nuclear fuel, electricity and other energy-related commodities as a result of their ownership of energy- related assets. Fuel costs are recovered primarily through cost recovery clauses, subject to the approval of state utility commissions. Additionally, the Duke Energy Registrants are exposed to risk that counterparties will not be able to fulfill their obligations. Disruption in the delivery of fuel, including disruptions as a result of, among other things, bankruptcies, transportation delays, weather, labor relations, force majeure events or environmental regulations affecting any of these fuel suppliers, could limit the Duke Energy Registrants’ ability to operate their facilities. Should counterparties fail to perform, the Duke Energy Registrants might be forced to replace the underlying commitment at prevailing market prices possibly resulting in losses in addition to the amounts, if any, already paid to the counterparties. Certain of the Duke Energy Registrants’ hedge agreements may result in the receipt of, or posting of, collateral with counterparties, depending on the daily market-based calculation of financial exposure of the derivative positions. Fluctuations in commodity prices that lead to the return of collateral received and/or the posting of collateral with counterparties could negatively impact liquidity. Downgrades in the Duke Energy Registrants’ credit ratings could lead to additional collateral posting requirements. The Duke Energy Registrants continually monitor derivative positions in relation to market price activity. Cyberattacks and data security breaches could adversely affect the Duke Energy Registrants’ businesses. Cybersecurity risks have increased in recent years as a result of the proliferation of new technologies and the increased sophistication, magnitude and frequency of cyberattacks and data security breaches. Duke Energy relies on the continued operation of sophisticated digital information technology systems and network infrastructure, which are part of an interconnected regional grid. Additionally, connectivity to the internet continues to increase through grid modernization and other operational excellence initiatives. Because of the critical nature of the infrastructure, increased connectivity to the internet and technology systems’ inherent vulnerability to disability or failures due to hacking, viruses, acts of war or terrorism or other types of data security breaches, the Duke Energy Registrants face a heightened risk of cyberattack from foreign or domestic sources and have been subject, and will likely continue to be subject, to attempts to gain unauthorized access to information and/or information systems or to disrupt utility operations through computer viruses and phishing attempts either directly or indirectly through its material vendors or related third parties. In the event of a significant cybersecurity breach on either the Duke Energy Registrants or with one of our material vendors or related third parties, the Duke Energy Registrants could (i) have business operations disrupted, including the disruption of the operation of our natural gas and electric assets and the power grid, theft of confidential company, employee, 20 PART Iretiree, shareholder, vendor or customer information, and general business systems and process interruption or compromise, including preventing the Duke Energy Registrants from servicing customers, collecting revenues or the recording, processing and/or reporting financial information correctly, (ii) experience substantial loss of revenues, repair and restoration costs, penalties and costs for lack of compliance with relevant regulations, implementation costs for additional security measures to avert future cyberattacks and other financial loss and (iii) be subject to increased regulation, litigation and reputational damage. While Duke Energy maintains insurance relating to cybersecurity events, such insurance is subject to a number of exclusions and may be insufficient to offset any losses, costs or damage experienced. Also, the market for cybersecurity insurance is relatively new and coverage available for cybersecurity events is evolving as the industry matures. The Duke Energy Registrants are subject to standards enacted by the North American Electric Reliability Corporation and enforced by FERC regarding protection of the physical and cybersecurity of critical infrastructure assets required for operating North America’s bulk electric system. The Duke Energy Registrants are also subject to regulations set by the Nuclear Regulatory Commission regarding the protection of digital computer and communication systems and networks required for the operation of nuclear power plants. The Duke Energy Registrants that operate designated critical pipelines that transport natural gas are also subject to security directives issued by the Department of Homeland Security’s Transportation Security Administration (TSA) requiring such registrants to implement specific cybersecurity mitigation measures. While the Duke Energy Registrants believe they are in compliance with, or, in the case of recent TSA security directives, are in the process of implementing such standards and regulations, the Duke Energy Registrants have from time to time been, and may in the future be, found to be in violation of such standards and regulations. In addition, compliance with or changes in the applicable standards and regulations may subject the Duke Energy Registrants to higher operating costs and/or increased capital expenditures as well as substantial fines for non-compliance. The Duke Energy Registrants’ operations have been and may be affected by pandemic health events, including COVID-19, in ways listed below and in ways the Duke Energy Registrants cannot predict at this time. The COVID-19 pandemic and efforts to respond to it have resulted in widespread adverse consequences on the global economy and on the Duke Energy Registrants’ customers, third-party vendors, and other parties with whom we do business. If the COVID-19 pandemic or other health epidemics and outbreaks that may occur are significantly prolonged, it could impact the Duke Energy Registrants’ business strategy, results of operations, financial position and cash flows in the future as a result of delays in rate cases or other legal proceedings, an inability to obtain labor or equipment necessary for the construction of large capital projects, an inability to procure satisfactory levels of fuels or other necessary equipment for the continued production of electricity and delivery of natural gas, and the health and availability of our critical personnel and their ability to perform business functions. Duke Energy Ohio’s and Duke Energy Indiana’s membership in an RTO presents risks that could have a material adverse effect on their results of operations, financial position and cash flows. The rules governing the various regional power markets may change, which could affect Duke Energy Ohio’s and Duke Energy Indiana’s costs and/ or revenues. To the degree Duke Energy Ohio and Duke Energy Indiana incur significant additional fees and increased costs to participate in an RTO, their results of operations may be impacted. Duke Energy Ohio and Duke Energy Indiana may be allocated a portion of the cost of transmission facilities built by others due to changes in RTO transmission rate design. Duke Energy Ohio and Duke Energy Indiana may be required to expand their transmission system according to decisions made by an RTO rather than their own internal planning process. In addition, RTOs have been developing rules associated with the allocation and methodology of assigning costs associated with improved transmission reliability, reduced transmission congestion and firm transmission rights that may have a financial impact on the results of operations, financial position and cash flows of Duke Energy Ohio and Duke Energy Indiana. As members of an RTO, Duke Energy Ohio and Duke Energy Indiana are subject to certain additional risks, including those associated with the allocation among RTO members, of losses caused by unreimbursed defaults of other participants in the RTO markets and those associated with complaint cases filed against an RTO that may seek refunds of revenues previously earned by RTO members. The Duke Energy Registrants may not recover costs incurred to begin construction on projects that are canceled. Duke Energy’s long-term strategy requires the construction of new projects, either wholly owned or partially owned, which involve a number of risks, including construction delays, delays in or failure to receive required regulatory approvals and/or sitting or environmental permits, nonperformance by equipment and other third-party suppliers, and increases in equipment and labor costs. To limit the risks of these construction projects, the Duke Energy Registrants enter into equipment purchase orders and construction contracts and incur engineering and design service costs in advance of receiving necessary regulatory approvals and/or siting or environmental permits. If any of these projects are canceled for any reason, including failure to receive necessary regulatory approvals and/or siting or environmental permits, significant cancellation penalties under the equipment purchase orders and construction contracts could occur. In addition, if any construction work or investments have been recorded as an asset, an impairment may need to be recorded in the event the project is canceled. The Duke Energy Registrants are subject to risks associated with their ability to obtain adequate insurance at acceptable costs. The financial condition of some insurance companies, actual or threatened physical or cyberattacks, and natural disasters, among other things, could have disruptive effects on insurance markets. The availability of insurance covering risks that the Duke Energy Registrants and their respective competitors typically insure against may decrease, and the insurance that the Duke Energy Registrants are able to obtain may have higher deductibles, higher premiums, and more restrictive policy terms. Further, the insurance policies may not cover all of the potential exposures or the actual amount of loss incurred. Any losses not covered by insurance, or any increases in the cost of applicable insurance, could adversely affect the results of operations, financial position or cash flows of the affected Duke Energy Registrant. Our business could be negatively affected as a result of actions of activist shareholders. While we strive to maintain constructive communications with our shareholders, activist shareholders may, from time to time, engage in proxy solicitations or advance shareholder proposals, or otherwise attempt to affect changes and assert influence on our Board and management. Perceived uncertainties as to the future direction or governance of the company may cause concern to our current or potential regulators, vendors or strategic partners, or make it more difficult to execute on our strategy or to attract and retain qualified personnel, which may have a material impact on our business and operating results. In addition, actions such as those described above could cause fluctuations in the trading price of our common stock, based on temporary or speculative market perceptions or other factors that do not necessarily reflect the underlying fundamentals and prospects of our business. 21 PART INUCLEAR GENERATION RISKS Duke Energy Carolinas, Duke Energy Progress and Duke Energy Florida may incur substantial costs and liabilities due to their ownership and operation of nuclear generating facilities. Ownership interests in and operation of nuclear stations by Duke Energy Carolinas, Duke Energy Progress and Duke Energy Florida subject them to various risks. These risks include, among other things: the potential harmful effects on the environment and human health resulting from the current or past operation of nuclear facilities and the storage, handling and disposal of radioactive materials; limitations on the amounts and types of insurance commercially available to cover losses that might arise in connection with nuclear operations; and uncertainties with respect to the technological and financial aspects of decommissioning nuclear plants at the end of their licensed lives. Ownership and operation of nuclear generation facilities requires compliance with licensing and safety-related requirements imposed by the NRC. In the event of non-compliance, the NRC may increase regulatory oversight, impose fines or shut down a unit depending upon its assessment of the severity of the situation. Revised security and safety requirements promulgated by the NRC, which could be prompted by, among other things, events within or outside of the control of Duke Energy Carolinas, Duke Energy Progress and Duke Energy Florida, such as a serious nuclear incident at a facility owned by a third party, could necessitate substantial capital and other expenditures, as well as assessments to cover third- party losses. In addition, if a serious nuclear incident were to occur, it could have a material adverse effect on the results of operations, financial position, cash flows and reputation of the Duke Energy Registrants. LIQUIDITY, CAPITAL REQUIREMENTS AND COMMON STOCK RISKS The Duke Energy Registrants rely on access to short-term borrowings and longer-term debt and equity markets to finance their capital requirements and support their liquidity needs. Access to those markets can be adversely affected by a number of conditions, many of which are beyond the Duke Energy Registrants’ control. The Duke Energy Registrants’ businesses are significantly financed through issuances of debt and equity. The maturity and repayment profile of debt used to finance investments often does not correlate to cash flows from their assets. Accordingly, as a source of liquidity for capital requirements not satisfied by the cash flows from their operations and to fund investments originally financed through debt instruments with disparate maturities, the Duke Energy Registrants rely on access to short-term money markets as well as longer-term capital markets. The Subsidiary Registrants also rely on access to short-term intercompany borrowings. If the Duke Energy Registrants are not able to access debt or equity at competitive rates or at all, the ability to finance their operations and implement their strategy and business plan as scheduled could be adversely affected. An inability to access debt and equity may limit the Duke Energy Registrants’ ability to pursue improvements or acquisitions that they may otherwise rely on for future growth. Market disruptions may increase the cost of borrowing or adversely affect the ability to access one or more financial markets. Such disruptions could include: economic downturns, unfavorable capital market conditions, market prices for natural gas and coal, geopolitical risks, actual or threatened terrorist attacks, or the overall health of the energy industry. Additionally, rapidly rising interest rates could impact the ability to affordably finance the capital plan or increase rates to customers and could have an impact on our ability to execute on our clean energy transition. The availability of credit under Duke Energy’s Master Credit Facility depends upon the ability of the banks providing commitments under the facility to provide funds when their obligations to do so arise. Systemic risk of the banking system and the financial markets could prevent a bank from meeting its obligations under the facility agreement. Duke Energy maintains a revolving credit facility to provide backup for its commercial paper program and letters of credit to support variable rate demand tax-exempt bonds that may be put to the Duke Energy Registrant issuer at the option of the holder. The facility includes borrowing sublimits for the Duke Energy Registrants, each of whom is a party to the credit facility, and financial covenants that limit the amount of debt that can be outstanding as a percentage of the total capital for the specific entity. Failure to maintain these covenants at a particular entity could preclude Duke Energy from issuing commercial paper or the Duke Energy Registrants from issuing letters of credit or borrowing under the Master Credit Facility. The Duke Energy Registrants must meet credit quality standards and there is no assurance they will maintain investment grade credit ratings. If the Duke Energy Registrants are unable to maintain investment grade credit ratings, they would be required under credit agreements to provide collateral in the form of letters of credit or cash, which may materially adversely affect their liquidity. Each of the Duke Energy Registrants’ senior long-term debt issuances is currently rated investment grade by various rating agencies. The Duke Energy Registrants cannot ensure their senior long-term debt will be rated investment grade in the future. If the rating agencies were to rate the Duke Energy Registrants below investment grade, borrowing costs would increase, perhaps significantly. In addition, the potential pool of investors and funding sources would likely decrease. Further, if the short-term debt rating were to fall, access to the commercial paper market could be significantly limited. A downgrade below investment grade could also require the posting of additional collateral in the form of letters of credit or cash under various credit, commodity and capacity agreements and trigger termination clauses in some interest rate derivative agreements, which would require cash payments. All of these events would likely reduce the Duke Energy Registrants’ liquidity and profitability and could have a material effect on their results of operations, financial position and cash flows. Non-compliance with debt covenants or conditions could adversely affect the Duke Energy Registrants’ ability to execute future borrowings. The Duke Energy Registrants’ debt and credit agreements contain various financial and other covenants. Failure to meet those covenants beyond applicable grace periods could result in accelerated due dates and/or termination of the agreements. Market performance and other changes may decrease the value of the NDTF investments of Duke Energy Carolinas, Duke Energy Progress and Duke Energy Florida, which then could require significant additional funding. Ownership and operation of nuclear generation facilities also requires the maintenance of funded trusts that are intended to pay for the decommissioning costs of the respective nuclear power plants. The performance of the capital markets affects the values of the assets held in trust to satisfy these future obligations. Duke Energy Carolinas, Duke Energy Progress and Duke Energy Florida have significant obligations in this area and hold significant assets in these trusts. These assets are subject to market fluctuations and will yield uncertain returns, which may fall below projected rates of return. Although a number of factors impact funding requirements, a decline in the market value of the assets may increase the funding requirements of the obligations for decommissioning nuclear plants. If Duke Energy Carolinas, Duke Energy Progress and Duke Energy Florida are unable to successfully manage their NDTF assets, their results of operations, financial position and cash flows could be negatively affected. 22 PART IPoor investment performance of the Duke Energy pension plan holdings and other factors impacting pension plan costs could unfavorably impact the Duke Energy Registrants’ liquidity and results of operations. The costs of providing non-contributory defined benefit pension plans are dependent upon a number of factors, such as the rates of return on plan assets, discount rates, the level of interest rates used to measure the required minimum funding levels of the plans, future government regulation and required or voluntary contributions made to the plans. The Subsidiary Registrants are allocated their proportionate share of the cost and obligations related to these plans. Without sustained growth in the pension investments over time to increase the value of plan assets and, depending upon the other factors impacting costs as listed above, Duke Energy could be required to fund its plans with significant amounts of cash. Such cash funding obligations, and the Subsidiary Registrants’ proportionate share of such cash funding obligations, could have a material adverse impact on the Duke Energy Registrants’ results of operations, financial position and cash flows. floods, power loss, telecommunications failures, break-ins and similar events. Failure to prevent or mitigate data loss from system failures or outages could materially affect the results of operations, financial position and cash flows of the Duke Energy Registrants. In addition to maintaining our current information technology systems, Duke Energy believes the digital transformation of its business is key to driving internal efficiencies as well as providing additional capabilities to customers. Duke Energy’s information technology systems are critical to cost-effective, reliable daily operations and our ability to effectively serve our customers. We expect our customers to continue to demand more sophisticated technology- driven solutions and we must enhance or replace our information technology systems in response. This involves significant development and implementation costs to keep pace with changing technologies and customer demand. If we fail to successfully implement critical technology, or if it does not provide the anticipated benefits or meet customer demands, such failure could materially adversely affect our business strategy as well as impact the results of operations, financial position and cash flows of the Duke Energy Registrants. Duke Energy is a holding company and depends on the cash flows from its subsidiaries to meet its financial obligations. Potential terrorist activities, or military or other actions, could adversely affect the Duke Energy Registrants’ businesses. The continued threat of terrorism and the impact of retaliatory military and other action by the U.S. and its allies may lead to increased political, economic and financial market instability and volatility in prices for natural gas and oil, which may have material adverse effects in ways the Duke Energy Registrants cannot predict at this time. In addition, future acts of terrorism and possible reprisals as a consequence of action by the U.S. and its allies could be directed against companies operating in the U.S. Information technology systems, transportation systems for our fuel sources including natural gas pipelines, transmission and distribution and generation facilities such as nuclear plants could be potential targets of terrorist activities or harmful activities by individuals or groups that could have a material adverse effect on Duke Energy Registrants’ businesses. In particular, the Duke Energy Registrants may experience increased capital and operating costs to implement increased security for their information technology systems, transmission and distribution and generation facilities, including nuclear power plants under the NRC’s design basis threat requirements. These increased costs could include additional physical plant security and security personnel or additional capability following a terrorist incident. Failure to attract and retain an appropriately qualified workforce could unfavorably impact the Duke Energy Registrants’ results of operations. Certain events, such as an aging workforce, mismatch of skill set or complement to future needs, or unavailability of contract resources may lead to operating challenges and increased costs. The challenges include lack of resources, loss of knowledge base and the lengthy time required for skill development. In this case, costs, including costs for contractors to replace employees, productivity costs and safety costs, may increase. Failure to hire and adequately train replacement employees, including the transfer of significant internal historical knowledge and expertise to new employees, or future availability and cost of contract labor may adversely affect the ability to manage and operate the business, especially considering the workforce needs associated with nuclear generation facilities and new skills required to operate a modernized, technology-enabled power grid. If the Duke Energy Registrants are unable to successfully attract and retain an appropriately qualified workforce, their results of operations, financial position and cash flows could be negatively affected. Because Duke Energy is a holding company with no operations or cash flows of its own, its ability to meet its financial obligations, including making interest and principal payments on outstanding indebtedness and to pay dividends on its common stock, is primarily dependent on the net income and cash flows of its subsidiaries and the ability of those subsidiaries to pay upstream dividends or to repay borrowed funds. Prior to funding Duke Energy, its subsidiaries have regulatory restrictions and financial obligations that must be satisfied. These subsidiaries are separate legal entities and have no obligation to provide Duke Energy with funds. In addition, Duke Energy may provide capital contributions or debt financing to its subsidiaries under certain circumstances, which would reduce the funds available to meet its financial obligations, including making interest and principal payments on outstanding indebtedness and to pay dividends on Duke Energy’s common stock. GENERAL RISKS The failure of Duke Energy information technology systems, or the failure to enhance existing information technology systems and implement new technology, could adversely affect the Duke Energy Registrants’ businesses. Duke Energy’s operations are dependent upon the proper functioning of its internal systems, including the information technology systems that support our underlying business processes. Any significant failure or malfunction of such information technology systems may result in disruptions of our operations. In the ordinary course of business, we rely on information technology systems, including the internet and third-party hosted services, to support a variety of business processes and activities and to store sensitive data, including (i) intellectual property, (ii) proprietary business information, (iii) personally identifiable information of our customers, employees, retirees and shareholders and (iv) data with respect to invoicing and the collection of payments, accounting, procurement, and supply chain activities. Our information technology systems are dependent upon global communications and cloud service providers, as well as their respective vendors, many of whom have at some point experienced significant system failures and outages in the past and may experience such failures and outages in the future. These providers’ systems are susceptible to cybersecurity and data breaches, outages from fire, ITEM 1B. UNRESOLVED STAFF COMMENTS None. 23 PART IITEM 2. PROPERTIES ELECTRIC UTILITIES AND INFRASTRUCTURE The following table provides information related to the EU&I’s generation stations as of December 31, 2022. The MW displayed in the table below are based on summer capacity. Ownership interest in all facilities is 100% unless otherwise indicated. Facility Duke Energy Carolinas Oconee McGuire Catawba(a) Belews Creek Marshall J.E. Rogers Lincoln Combustion Turbine (CT) Allen Rockingham CT W.S. Lee Combined Cycle (CC)(b) Buck CC Dan River CC Mill Creek CT W.S. Lee CT Clemson CHP Bad Creek Jocassee Cowans Ford Keowee Other small facilities (19 plants) Distributed generation Total Duke Energy Carolinas Duke Energy Progress Brunswick Harris Robinson Roxboro Smith CC H.F. Lee CC Wayne County CT Smith CT Mayo L.V. Sutton CC Asheville CC Asheville CT Darlington CT Weatherspoon CT L.V. Sutton CT Blewett CT Walters Other small facilities (3) Distributed generation Asheville – Rock Hill Battery Hot Springs Microgrid Total Duke Energy Progress Plant Type Primary Fuel Location Owned MW Capacity Uranium Uranium Uranium Coal/Gas Coal/Gas Coal/Gas Gas/Oil Coal Gas/Oil Gas Gas Gas Gas/Oil Gas/Oil Gas Water Water Water Water Water Solar Uranium Uranium Uranium Coal Gas/Oil Gas/Oil Gas/Oil Gas/Oil Coal Gas/Oil Gas/Oil Gas/Oil Gas/Oil Gas/Oil Gas/Oil Oil Water Water Solar Storage Storage SC NC SC NC NC NC NC NC NC SC NC NC SC SC SC SC SC NC SC NC/SC NC NC NC SC NC NC NC NC NC NC NC NC NC SC NC NC NC NC NC NC NC NC 2,554 2,316 445 2,220 2,058 1,388 1,161 421 825 686 668 662 563 84 13 1,520 780 324 152 581 71 19,492 1,870 964 759 2,439 1,083 888 822 772 704 607 476 320 234 124 84 52 112 116 35 2 1 12,464 Nuclear Nuclear Nuclear Fossil Fossil Fossil Fossil Fossil Fossil Fossil Fossil Fossil Fossil Fossil Fossil Hydro Hydro Hydro Hydro Hydro Renewable Nuclear Nuclear Nuclear Fossil Fossil Fossil Fossil Fossil Fossil Fossil Fossil Fossil Fossil Fossil Fossil Fossil Hydro Hydro Renewable Renewable Renewable 24 PART I Facility Duke Energy Florida Hines CC Citrus County CC Crystal River Bartow CC Anclote Intercession City CT Osprey CC DeBary CT Tiger Bay CC Bayboro CT Bartow CT Suwannee River CT University of Florida CoGen CT Distributed generation Trenton Battery Micanopy Energy Storage Jennings Battery Cape San Blas Battery Total Duke Energy Florida Duke Energy Ohio East Bend Woodsdale CT Beckjord Battery Storage Total Duke Energy Ohio Duke Energy Indiana Gibson(c) Cayuga(d) Edwardsport Madison CT Wheatland CT Vermillion CT(e) Noblesville CC Henry County CT Cayuga CT Purdue CHP Markland Distributed generation Camp Atterbury Battery Nabb Battery Crane Battery Total Duke Energy Indiana Totals by Type Total Electric Utilities Totals by Plant Type Nuclear Fossil Hydro Renewable Total Electric Utilities Plant Type Primary Fuel Location Owned MW Capacity Fossil Fossil Fossil Fossil Fossil Fossil Fossil Fossil Fossil Fossil Fossil Fossil Fossil Renewable Renewable Renewable Renewable Renewable Fossil Fossil Renewable Fossil Fossil Fossil Fossil Fossil Fossil Fossil Fossil Fossil Fossil Hydro Renewable Renewable Renewable Renewable Gas/Oil Gas Coal Gas/Oil Gas Gas/Oil Gas/Oil Gas/Oil Gas/Oil Oil Gas/Oil Gas Gas Solar Storage Storage Storage Storage Coal Gas/Propane Storage Coal Coal/Oil Coal Gas Gas Gas Gas/Oil Gas/Oil Gas/Oil Gas Water Solar Storage Storage Storage FL FL FL FL FL FL FL FL FL FL FL FL FL FL FL FL FL FL KY OH OH IN IN IN OH IN IN IN IN IN IN IN IN IN IN IN 2,061 1,610 1,410 1,112 1,013 940 576 524 199 171 168 145 44 485 11 8 5.5 5.5 10,488 600 476 4 1,080 2,822 1,005 595 566 444 360 264 126 84 12 54 11 1 1 1 6,346 49,870 8,908 36,681 3,639 642 49,870 Jointly owned with North Carolina Municipal Power Agency Number 1, NCEMC and PMPA. Duke Energy Carolinas’ ownership is 19.25% of the facility. Jointly owned with NCEMC. Duke Energy Carolinas’ ownership is 87.27% of the facility. (a) (b) (c) Duke Energy Indiana owns and operates Gibson Station Units 1 through 4 and is a joint owner of unit 5 with WVPA and IMPA. Duke Energy Indiana operates unit 5 and owns 50.05%. (d) (e) Includes Cayuga Internal Combustion. Jointly owned with WVPA. Duke Energy Indiana’s ownership is 62.5% of the facility. 25 PART I The following table provides information related to EU&I’s electric transmission and distribution properties as of December 31, 2022. Electric Transmission Lines Miles of 500 to 525 kilovolt (kV) Miles of 345 kV Miles of 230 kV Miles of 100 to 161 kV Miles of 13 to 69 kV Total conductor miles of electric transmission lines Electric Distribution Lines Miles of overhead lines Miles of underground line Total conductor miles of electric distribution lines Number of electric transmission and distribution substations Duke Energy Carolinas Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana Duke Energy 1,100 1,100 8,500 12,500 8,300 31,500 600 — 2,700 6,800 2,900 300 — 3,400 2,600 200 — 1,700 1,000 — 2,200 — 400 — 700 700 13,000 6,300 5,100 1,800 173,600 116,100 66,600 41,900 46,300 35,200 25,300 22,700 13,300 6,500 289,700 108,500 81,500 48,000 19,800 3,000 1,200 500 500 300 — 700 700 1,400 2,500 5,300 22,100 9,800 31,900 500 Substantially all of EU&I’s electric plant in service is mortgaged under indentures relating to Duke Energy Carolinas’, Duke Energy Progress’, Duke Energy Florida’s, Duke Energy Ohio’s and Duke Energy Indiana’s various series of First Mortgage Bonds. GAS UTILITIES AND INFRASTRUCTURE GU&I owns transmission pipelines and distribution mains that are generally underground, located near public streets and highways, or on property owned by others for which Duke Energy Ohio and Piedmont have obtained the necessary legal rights to place and operate facilities on such property located within the GU&I service territories. The following table provides information related to GU&I’s natural gas distribution. Miles of natural gas distribution and transmission pipelines Miles of natural gas service lines Duke Energy Ohio Piedmont 7,600 6,600 27,600 21,700 Duke Energy 35,200 28,300 26 PART I OTHER Duke Energy owns approximately 7.1 million square feet and leases approximately 2.7 million square feet of corporate, regional and district office space spread throughout its service territories. See Note 11, “Property, Plant and Equipment,” for further information. ITEM 3. LEGAL PROCEEDINGS MTBE Litigation On December 15, 2017, the state of Maryland filed suit in Baltimore City Circuit Court against Duke Energy Merchants and other defendants alleging contamination of state waters by MTBE leaking from gasoline storage tanks and is seeking an unspecified amount of monetary damages. MTBE is a gasoline additive intended to increase the oxygen levels in gasoline and make it burn cleaner. The case was removed from Baltimore City Circuit Court to federal District Court. Initial motions to dismiss filed by the defendants were denied by the court on September 4, 2019, and the matter is now in discovery. On December 18, 2020, the plaintiff and defendants selected 50 focus sites, none of which have any ties to Duke Energy Merchants. Discovery will be specific to those sites. At this time, Duke Energy Merchants has not engaged in settlement negotiations with the plaintiff and the plaintiff has not reached a settlement agreement with any defendant. Duke Energy cannot predict the outcome of this matter. In addition, the Duke Energy Registrants are, from time to time, parties to various lawsuits and regulatory proceedings in the ordinary course of their business. For information regarding legal proceedings, including regulatory and environmental matters, see Note 4, “Regulatory Matters,” and Note 5, “Commitments and Contingencies,” to the Consolidated Financial Statements. ITEM 4. MINE SAFETY DISCLOSURES This is not applicable for any of the Duke Energy Registrants. 27 PART IITEM 5. MARKET FOR REGISTRANT’S COMMON EQUITY, RELATED STOCKHOLDER MATTERS AND ISSUER PURCHASES OF EQUITY SECURITIES The common stock of Duke Energy is listed and traded on the NYSE (ticker symbol DUK). As of January 31, 2023, there were 127,329 Duke Energy common stockholders of record. For information on dividends, see the “Dividend Payments” section of Management’s Discussion and Analysis. There is no market for the common equity securities of the Subsidiary Registrants, all of which are directly or indirectly owned by Duke Energy. See Note 2, “Dispositions,” to the Consolidated Financial Statements for information on the investment of a minority interest in Duke Energy Indiana. Securities Authorized for Issuance Under Equity Compensation Plans See Item 12 of Part III within this Annual Report for information regarding Securities Authorized for Issuance Under Equity Compensation Plans. Issuer Purchases of Equity Securities for Fourth Quarter 2022 There were no repurchases of equity securities during the fourth quarter of 2022. Unregistered Sales of Equity Securities and Use of Proceeds None. Stock Performance Graph The following performance graph compares the cumulative TSR from Duke Energy Corporation common stock, as compared with the Standard & Poor’s 500 Stock Index (S&P 500) and the Philadelphia Utility Index for the past five years. The graph assumes an initial investment of $100 on December 31, 2017, in Duke Energy common stock, in the S&P 500 and in the Philadelphia Utility Index and that all dividends were reinvested. The stockholder return shown below for the five-year historical period may not be indicative of future performance. $250 $200 $150 $100 $50 $0 2017 2018 2019 2020 2021 2022 Duke Energy Corporation Philadelphia Utility Index S&P 500 NYSE CEO Certification Duke Energy has filed the certification of its Chief Executive Officer and Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 as exhibits to this Annual Report. 28 PART IITEM 6. SELECTED FINANCIAL DATA This is not applicable for any of the Duke Energy Registrants. ITEM 7. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS 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. The 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 as presented herein may not be comparable to similarly titled measures used by other companies. The following combined Management’s Discussion and Analysis of Financial Condition and Results of Operations is separately filed by Duke Energy Corporation and its subsidiaries. Duke Energy Carolinas, LLC, Progress Energy, Inc., Duke Energy Progress, LLC, Duke Energy Florida, LLC, Duke Energy Ohio, Inc., Duke Energy Indiana, LLC and Piedmont Natural Gas Company, Inc. 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. Management’s Discussion and Analysis should be read in conjunction with the Consolidated Financial Statements and Notes for the years ended December 31, 2022, 2021 and 2020. See “Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations,” in Duke Energy’s Annual Report on Form 10-K for the year ended December 31, 2021, filed with the SEC on February 24, 2022, for a discussion of variance drivers for the year ended December 31, 2021, as compared to December 31, 2020. Financial Results DUKE ENERGY Duke Energy is an energy company headquartered in Charlotte, North Carolina. Duke Energy operates in the U.S. primarily through its direct and indirect 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. Executive Overview At Duke Energy, we remain focused on continuing to advance our clean energy transition while maintaining affordability and reliability for our customers and delivering on our commitments to our communities, employees, investors, and other stakeholders. The fundamentals of our business are strong and allow us to deliver growth in earnings and dividends in a low-risk, predictable and transparent way. In 2022, we continued to make progress, navigating rising interest rates, volatile commodity prices and other macroeconomic headwinds while meeting our near-term financial commitments, executing on our strategic priorities, responding to severe weather and external events, and continuing to provide the safe and reliable service that our communities depend on. In 2022, we announced the sale of our commercial renewables business, filed the Carbon Plan with the NCUC, and continued to engage with the communities in our jurisdictions. We also continue to make the investments necessary to support our ongoing clean energy transition and a business portfolio that delivers a reliable and growing dividend, with 2022 representing the 96th consecutive year Duke Energy paid a cash dividend on its common stock. Annual Earnings (in millions) Annual Earnings Per Share Net Income Available to Duke Energy Corporation common stockholders (GAAP) Net Income Available to Duke Energy Corporation common stockholders per basic share (GAAP) Adjusted Earnings (a) Adjusted Earnings Per Share (a) $3,802 $3,837 $4,060 $4.94 $4.99 $5.27 $2,444 $3.17 2021 2022 2021 2022 (a) See Results of Operations below for Duke Energy’s definition of adjusted earnings and adjusted EPS as well as a reconciliation of this non-GAAP financial measure to net income available to Duke Energy and net income available to Duke Energy per basic share. On February 9, 2023, Duke Energy announced 2022 full year reported earnings of $2,563 million, or $3.33 per share and adjusted earnings of $4,060 million, or $5.27 per share. On February 21, 2023, Duke Energy Indiana received an opinion from the Indiana Court of Appeals disallowing recovery of certain coal ash costs. As a result of this opinion, Duke Energy Indiana 29 recognized a pretax charge of approximately $175 million to Impairment of assets and other charges for the year ended December 31, 2022. The 2022 full year reported earnings changed to $2,444 million, or $3.17 per share. There was no change to adjusted earnings or adjusted earnings per share. PART IIDuke Energy’s 2022 Net Income Available to Duke Energy Corporation (GAAP Reported Earnings) was impacted primarily by the estimated impairment on the sale of the Commercial Renewables business in the current year. See “Results of Operations” below for a detailed discussion of the consolidated results of operations and a detailed discussion of financial results for each of Duke Energy’s reportable business segments, as well as Other. 2022 Areas of Focus and Accomplishments Clean Energy Transition. Our industry continues to experience an unprecedented level of change and 2022 was a dynamic year for our company as we navigated macroeconomic headwinds and continued to execute on our strategic priorities and deliver on our vision. Generating Cleaner Energy 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 to date 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). In October 2022, we announced an additional interim target to reduce carbon emissions from electric generation by 80% by 2040. We also adopted a goal of reducing Scope 2 and certain Scope 3 emissions, including emissions from upstream purchased power and fossil fuel purchases, as well as downstream customer use of natural gas, by 50% by 2035, on the way to net-zero by 2050. Duke Energy is one of the first utilities to address the totality of its impact – approximately 95% of the company’s greenhouse gas emissions are now tied to a measurable net-zero goal. Over the next decade, we expect to deploy over $145 billion of capital into our regulated businesses, driven by clean energy transition investments. These investments will drive substantial economic benefits for the communities we serve and reduce our customer’s exposure to fuel volatility. We’ve filed and refined comprehensive IRPs consistent with this strategy in multiple jurisdictions, allowing us to accelerate coal plant retirements, make needed grid investments to enable renewables and energy storage, and increase resiliency. To partially fund this plan, in December 2022, we closed on the second and final tranche of the approximate $2 billion investment in Duke Energy Indiana by GIC. In 2022, we were awarded one of two North Carolina offshore wind sites held by the Bureau of Ocean Energy Management. The approximately 55,000-acre site in the Atlantic Ocean east of Wilmington could support up to 1.6 gigawatts of potential offshore wind energy, enough to power nearly 375,000 homes. Securing this contract creates optionality for future offshore wind if the NCUC determines it’s part of the least cost path to achieve North Carolina’s interim and long-term carbon reduction goals. As we look beyond 2030, we will need additional tools to continue our progress. We will actively work to advocate for research and development and deployment of carbon-free, dispatchable resources. This includes longer- duration energy storage, advanced nuclear technologies, carbon capture and zero-carbon fuels. Sale of Commercial Renewables In November 2022, the Board approved pursuing the sale of our Commercial Renewables business, excluding the offshore wind contract for Carolina Long Bay. Since 2007, we have built a portfolio of approximately 5,000 megawatts of commercial wind, solar and battery projects across the U.S., and established a robust development pipeline. As we look forward to the remainder of this decade and beyond, we have line of sight to significant renewable, grid and other investment opportunities within our faster-growing regulated operations. Carbon Plan North Carolina House Bill 951 (HB 951) was passed in 2021 and reflects new state policy that accelerates a clean energy transition for generation serving customers in the Carolinas, including providing a framework for a goal of 70% carbon reduction in electric generation in the state from 2005 levels by 2030 and carbon neutrality by 2050 while continuing to prioritize affordability and reliability for our customers. The legislation established a framework overseen by the NCUC to advance state CO2 emission reductions through the use of least cost planning, including stakeholder involvement, and also introduced modernized recovery mechanisms, including multiyear rate plans (MYRP), that promote more efficient recovery of investments and performance-based regulation (PBR), that align incentives between the company and the state’s energy policy objectives. In May 2022, we filed a proposed Carbon Plan with the NCUC that outlined potential pathways toward achieving the HB 951 carbon reduction targets while balancing affordability and reliability for our customers. We presented four “portfolios” – a base portfolio of what it would take to achieve 70% carbon reduction by 2030 and other portfolios demonstrating the impact of an extension to the 2030 compliance deadline to allow the introduction of new technologies at a more affordable price. In December 2022, the NCUC issued an order adopting its initial Carbon Plan, which included a set of near-term actions to support meeting the state’s carbon reduction goals. This is a constructive outcome that advances our clean energy transition, supporting a diverse, all-of-the-above approach that is essential for long-term resource planning. Modernizing the Power Grid and Natural Gas Infrastructure Our grid improvement programs continue to be a key component of our growth strategy. Modernization of the electric grid, including smart meters, storm hardening, self-healing and targeted undergrounding, helps to continue to ensure the system is better prepared for severe weather, improves the system’s reliability and flexibility, and provides better information and services for customers. We continue to expand our self-optimizing grid capabilities, and in 2022, smart, self-healing technologies helped to avoid more than 1.4 million customer interruptions across our six-state electric service area, saving customers more than 443 million minutes of lost outage time. Duke Energy has a demonstrated track record of driving efficiencies and productivity in the business and we continue to leverage new technology, digital tools and data analytics across the business in response to a transforming landscape. In 2022, we filed for approval of a new demand response pilot program expected to launch in 2023 for customers in the Duke Energy Carolinas service area. Pilot incentives will reduce vehicle lease payments for program participants who lease an eligible electric vehicle, including Ford F-150 Lightning trucks. In exchange, customers will allow their electric vehicles to feed energy back to the grid – helping to balance it during peak demand. Also, in August 2022, Duke Energy Florida announced a research and development pilot program to test and evaluate the viability of the new Ford F-150 Lightning all-electric truck’s high-capacity batteries as a grid edge resource. Recognizing the importance of natural gas to our plans, we continue to work toward a net-zero methane emission goal by 2030 related to our natural gas distribution business. In our LDC business, we are making great progress reducing methane emissions through our partnership with Accenture, Microsoft and Avanade to use satellites and build an emissions platform, the addition of other sensors and technologies to find and fix leaks in near real time, and the use of cross compression to avoid releasing natural gas into the atmosphere during certain operational activities. Investments in integrity management of our natural gas infrastructure continue to be of importance to ensure reliable, safe, and increasingly clean delivery of natural gas to our customers. 30 PART IIResponse to Macroeconomic Headwinds. In addition to achieving financial results in the upper half of our revised guidance, we continued our cost-management journey with a focus on driving productivity, increasing flexibility and prioritizing spend based on risk and strategic value to our customers and investors. In 2022, to address rising interest rates, increased commodity prices, labor and material inflation, and supply chain constraints, we launched the Workload Reduction Initiative, building on our culture of continuous improvement to identify more ways to reduce operating costs. Including cost reductions from supply chain, we identified approximately $300 million of savings opportunities focused on organization simplification, elimination of work, automation, reducing service levels provided to internal customers, and outsourcing. Commodity prices have impacted the price of electricity in all of our jurisdictions. We actively worked to manage and maintain prices at lower levels than they otherwise would be in light of increased commodity prices, working with our regulators to extend recovery periods in certain jurisdictions in a way that is manageable for our customers. We also continued our work with our vulnerable customers through increased communications, securing state and federal funding, and providing access to philanthropic support. Additionally, we’ve created a specialized team that’s partnered with agencies across our service territories and has helped connect customers to nearly $300 million in energy assistance funding since 2021. We successfully navigated supply chain challenges including inflation, longer lead times, and shortages of solar panels and other equipment. We’ve executed longer supply agreements and proactively secured equipment in early 2022 for hurricane season while placing orders for key needs for our customer delivery organization for 2023. Our procurement teams continue to execute on action plans to enhance planning, augment supply, amend operations and leverage our scale to continue to mitigate these risks to the extent possible. Constructive Regulatory and Legislative Outcomes. One of our long-term strategic goals is to achieve modernized regulatory constructs in our jurisdictions. Modernized constructs provide benefits, which include improved earnings and cash flows through more timely recovery of investments, as well as stable pricing for customers. Grid investment riders in the Midwest and Florida enable more timely cost recovery and earnings growth and we have a MYRP in Florida through 2024. Additionally, as highlighted above, HB 951 provides the framework for many of the benefits of modernized regulatory constructs in North Carolina under the direction of the NCUC. Duke Energy Progress filed its first rate case utilizing these benefits, including both PBR and MYRP, in North Carolina in October 2022. In January 2023, we also filed a Duke Energy Carolinas rate case in North Carolina, which incorporates elements of PBR and MYRP. In addition to the Duke Energy Progress and Duke Energy Carolinas rate cases in North Carolina, we continued to move a variety of other regulatory initiatives forward during 2022. Base rate cases were filed for both Duke Energy Progress and Piedmont in South Carolina, for Duke Energy Ohio’s natural gas business, and for Duke Energy Kentucky’s electric business. Constructive partial settlements were approved by the NCUC in January 2022 related to Piedmont’s 2021 North Carolina rate case and by the PUCO in December 2022 related to Duke Energy Ohio’s 2021 electric rate case. We also reached a constructive comprehensive settlement with all parties in the Duke Energy Progress South Carolina rate case in January 2023, which the PSCSC approved in February 2023. Duke Energy Indiana’s TDSIC 2.0 was approved in June 2022 and Duke Energy Florida’s 10 year storm protection plan was approved in October 2022, both of which provide for significant investments to improve the reliability and integrity of the grid in their respective jurisdictions. Overall, this was a very active year as it relates to regulatory filings, which reflects the important investments and ongoing clean energy transition across all our service territories. In November 2022, the Southeast Energy Exchange Market (SEEM) announced it had initiated operations. The new SEEM platform facilitates sub-hourly, bilateral trading, allowing participants to buy and sell power close to the time the energy is consumed, utilizing available unreserved transmission and providing southeastern electricity customers cost, reliability and environmental benefits. Also in 2022, storm securitization legislation was passed in South Carolina, providing the opportunity to securitize deferred storm costs and lower the bill impacts for our customers. We also continue to evaluate the impacts of the Inflation Reduction Act, which is expected to have significant benefits to customers and lower the cost of the clean energy transition. Customer Satisfaction. Duke Energy continues to transform the customer experience through our use of customer data to better inform operational priorities and performance levels. This data-driven approach allows us to identify the investments that are most important to the customer experience. In 2022, we successfully implemented the last of eight jurisdictional releases of Customer Connect, a new system that consolidates four legacy billing systems into one customer-service platform, allowing us to deliver the universal experience customers expect. While customer satisfaction across our industry continues to be impacted by the macroeconomic environment and the impacts of higher fuel prices on customer bills, our work continues to be recognized by our customers, with incremental improvements in customer satisfaction scores at certain jurisdictions including Piedmont, which was ranked number one in customer satisfaction by J.D. Power for residential natural gas service in the south. Operational Excellence, Safety and Reliability. The reliable and safe operation of our power plants, electric distribution system and natural gas infrastructure in our communities continues to be foundational to serving our customers, our financial results, and our credibility with stakeholders. This year presented unique challenges to the grid in our service territories, including attacks on two substations in Moore County, North Carolina and extreme winter weather that forced us to take unprecedented measures to ensure the integrity of our systems in North Carolina. Despite these recent challenges, our regulated generation fleet and nuclear sites had strong performance throughout the year and our electric distribution system performed well. The safety of our workforce is a core value. While our TICR was slightly above target, our employees continued to deliver strong safety results in 2022 and we remain an industry leader in personal safety. In addition, we continued our strong environmental performance, with no reportable environmental events. Storm activity was severe in our service territories in 2022. Hurricane Ian, the fifth-strongest hurricane on record, impacted our service territories in Florida and the Carolinas with heavy rainfall, strong winds, and life-threatening storm surge and flooding. Across our service territories, we assembled more than 20,000 power line technicians, damage assessors, and vegetation workers to prepare and begin to restore power as soon as it was safe to do so. In total, we experienced 2 million outages, and thanks to their efforts, more than 97% of our Florida customers were restored within three days of the storm moving out of our Florida territories, and over 99% of our Carolinas customers within two days of the storm exiting the Carolinas. In November, Hurricane Nicole made landfall in Florida as a Category 1 hurricane causing nearly 300,000 customer outages. Our crews were able to restore more than 98% of those outages within 12 hours. In December, high winds and extreme cold from Winter Storm Elliott, customer demand that was higher than forecasted, and inability to import additional power from out of state, resulted in the need to temporarily interrupt service to about 500,000 customers to maintain overall grid reliability and prevent further potential disruptions in the Carolinas. We will continue to further evaluate lessons learned to improve our strategy and communications, and incorporate any identified improvements to address this matter to better serve our customers now and in the future. Our ability to effectively handle all facets of the 2022 storm response efforts, including navigating ongoing macroeconomic challenges and supply chain constraints, is a testament to our team’s extensive preparation and coordination, applying lessons learned from previous storms, and to on-the- ground management throughout the restoration efforts. Duke Energy has received over 20 Emergency Response Awards since EEI began recognizing 31 PART IIstorm response in 1998 (including nine for assisting other utilities). We received EEI’s Emergency Assistance Award for our support to other electric companies following Hurricane Ian, as well as EEI’s Emergency Recovery Award for multiple events that include our own recovery from Hurricane Ian, Winter Storm Izzy, and the July storms in the Midwest. increased borrowings to temporarily finance related expenditures until recovery. The Duke Energy Registrants are working with various state commissions on the timing of recovery of these amounts. See Note 4 to the Consolidated Financial Statements, “Regulatory Matters” for more information. Duke Energy Objectives – 2023 and Beyond At Duke Energy, our climate strategy is our business strategy – to safely transform and ready our system by investing in new and existing carbon-free technology, modernizing our gas and electric infrastructure, and expanding and integrating efficiency and demand management programs. As we transition our business to cleaner sources of energy, we are focused on delivering sustainable value for our customers and shareholders by maintaining affordability and leveraging business transformation to exceed customer expectations, optimizing investments to drive attractive shareholder returns, and providing new product offerings and solutions that deliver growth and customer value. To achieve these major milestones, we are shaping the landscape by partnering with stakeholders, championing public policy that advances innovation, and advancing regulatory models that support carbon and methane emission reductions. 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 Duke Energy Carolinas and Duke Energy Progress both have approximately $1.4 billion, in regulatory assets related to coal ash retirement obligations as of December 31, 2022. Future spending, 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 10 to 15 years. 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. 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. Duke Energy Indiana has approximately $385 million in regulatory assets related to coal ash asset retirement obligations as of December 31, 2022. See Note 5 to the Consolidated Financial Statements, “Commitments and Contingencies” for more information. Fuel Cost Recovery As a result of rapidly rising commodity costs, including natural gas, fuel and purchased power prices in excess of amounts included in fuel-related revenues has led to an increase in the undercollection of fuel costs from customers at certain jurisdictions including Duke Energy Carolinas, Duke Energy Progress and Duke Energy Florida. These amounts have been deferred in regulatory assets and have impacted the cash flows of the registrants, including Commercial Renewables In November 2022, Duke Energy committed to a plan to sell the Commercial Renewables Disposal Groups. The bid process for the utility-scale solar and wind group is ongoing. Initial indicative bids were received for the distributed generation group in January 2023. Duke Energy expects to dispose of both groups in the second half of 2023. The Commercial Renewables Disposal Groups were classified as held for sale and as discontinued operations in the fourth quarter of 2022. Duke Energy recorded an impairment loss in the fourth quarter of 2022. If necessary, the loss on the sale of the assets will be updated based on market changes or the final sales price, after any adjustments at closing for working capital and capital expenditures and could be materially different than the estimated loss. Additionally, certain other costs resulting from the transactions may be recognized in the period incurred, including Duke Energy’s share of debt extinguishment costs and costs incurred to modify or terminate PPAs. Proceeds from the sales are expected to be used for debt avoidance. For more information, see Note 2 to the Consolidated Financial Statements, “Dispositions.” 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 Electric Reliability Council of Texas market. Duke Energy has been named in multiple lawsuits arising out of this winter storm. The legal actions related to these lawsuits will remain with Duke Energy and any future activity related to the matters will be presented in discontinued operations. For more information, see Note 5 to the Consolidated Financial Statements, “Commitments and Contingencies.” Supply Chain Duke Energy is monitoring supply chain disruptions, which could impact the timing of in-service dates and may result in adverse impacts on operating results. The company is also monitoring the potential impacts on future financial results and clean energy goals due to supply chain challenges regarding the availability of transformers and renewable components like solar panels and batteries. Other Duke Energy is monitoring general market conditions, including rising interest rates, and evaluating the impact to its results of operations, financial position and cash flows in the future. Results of Operations Non-GAAP Measures Management evaluates financial performance in part based on non-GAAP financial measures, including adjusted earnings and adjusted EPS. These items represent income from continuing operations available to Duke Energy common stockholders in dollar and per share amounts, adjusted for the dollar and per share impact of special items. As discussed below, special items include certain charges and credits, which management believes are not indicative of Duke Energy’s ongoing performance. Management believes the presentation of adjusted earnings and adjusted EPS provides useful information to investors, as it provides them with an additional relevant comparison of Duke Energy’s performance across periods. 32 PART IIManagement uses these non-GAAP financial measures for planning and forecasting, and for reporting financial results to the Board of Directors, employees, stockholders, analysts and investors. Adjusted EPS is also used as a basis for employee incentive bonuses. The most directly comparable GAAP measures for adjusted earnings and adjusted EPS are GAAP Reported Earnings and EPS Available to Duke Energy Corporation common stockholders (GAAP Reported EPS), respectively. Special items included in the periods presented include the following, which management believes do not reflect ongoing costs: • Regulatory matters and litigation represents the net impact of charges related to the Indiana court rulings on coal ash and other unrelated ongoing litigation. • Workplace and workforce realignment represents costs attributable to business transformation, including long-term real estate strategy changes and workforce reduction. Reconciliation of GAAP Reported Amounts to Adjusted Amounts • Regulatory settlements represents an impairment charge related to the South Carolina Supreme Court decision on coal ash, insurance proceeds and Duke Energy Carolinas and Duke Energy Progress coal ash settlement. • Gas pipeline investments represents additional exit obligations related to ACP. Discontinued operations primarily includes results from Duke Energy’s Commercial Renewables Disposal Groups, including an estimated impairment on the sale of the business in 2022. Duke Energy’s adjusted earnings and adjusted EPS may not be comparable to similarly titled measures of another company because other companies may not calculate the measures in the same manner. The following table presents a reconciliation of adjusted earnings and adjusted EPS to the most directly comparable GAAP measures. (in millions, except per share amounts) GAAP Reported Earnings/EPS Adjustments to Reported: Regulatory Matters and Litigation(a) Workplace and Workforce Realignment(b) Regulatory Settlements(c) Gas Pipeline Investments(d) Discontinued Operations(e) Adjusted Earnings/Adjusted EPS Years Ended December 31, 2022 2021 Earnings $ 2,444 295 105 — — 1,216 $ 4,060 EPS $ 3.17 0.39 0.14 — — 1.57 $ 5.27 Earnings $ 3,802 — 148 69 15 (197) $ 3,837 EPS $ 4.94 — 0.20 0.09 0.02 (0.26) $ 4.99 (a) Net of tax benefit of $128 million. $386 million recorded within Impairment of assets and other charges, $46 million within Regulated electric (Operating Revenues) and $34 million within Net Loss Attributable to Noncontrolling Interests. $25 million recorded within Operations, maintenance and other. (b) Net of tax benefit of $31 million and tax benefit of $44 million for the years ended December 31, 2022, and 2021, respectively. $72 million recorded within Impairment of assets and other charges, $71 million recorded within Operations, maintenance and other and a $7 million gain recorded in Gains on sales of other assets and other for the year ended December 31, 2022. $133 million recorded within Impairment of assets and other charges, $42 million within Operations, maintenance and other, and $17 million within Depreciation and amortization for the year ended December 31, 2021. (c) Net of tax benefit of $21 million. $202 million of expense recorded within Impairment of assets and other charges, $111 million of income within Other income and expenses, $12 million of expense within Operations, maintenance and other, $28 million of income within Regulated electric operating revenues, $8 million of expense within Interest expense and $7 million of expense within Depreciation and amortization. (d) Net of tax benefit of $5 million. $20 million loss recorded within Equity in earnings (losses) of unconsolidated affiliates. (e) Recorded in Loss from Discontinued Operations, net of tax, and Net Loss Attributable to Noncontrolling Interests. Year Ended December 31, 2022, as compared to 2021 SEGMENT RESULTS GAAP Reported EPS was $3.17 for the year ended December 31, 2022, compared to $4.94 for the year ended December 31, 2021. The decrease in GAAP Reported Earnings/EPS was primarily due to the estimated impairment on the sale of the Commercial Renewables Disposal Groups in the current year. As discussed and shown in the table above, management also evaluates financial performance based on adjusted EPS. Duke Energy’s adjusted EPS was $5.27 for the year ended December 31, 2022, compared to $4.99 for the year ended December 31, 2021. The increase in Adjusted Earnings/Adjusted EPS was primarily due to higher volumes, favorable weather and rate case contributions, partially offset by higher financing costs, higher depreciation and property taxes on a growing asset base, storm costs and unfavorable market impacts. 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 Consolidated Financial Statements. Duke Energy’s segment structure includes Electric Utilities and Infrastructure (EU&I) and Gas Utilities and Infrastructure (GU&I). The remainder of Duke Energy’s operations is presented as Other. See Note 3 to the Consolidated Financial Statements, “Business Segments,” for additional information on Duke Energy’s segment structure. 33 PART IIElectric Utilities and Infrastructure (in millions) Operating Revenues Operating Expenses Fuel used in electric generation and purchased power Operations, maintenance and other Depreciation and amortization Property and other taxes Impairment of assets and other charges Total operating expenses Gains on Sales of Other Assets and Other, net Operating Income Other Income and Expenses, net Interest Expense Income Before Income Taxes Income Tax Expense Less: Income Attributable to Noncontrolling Interest Segment Income Duke Energy Carolinas GWh sales Duke Energy Progress GWh sales Duke Energy Florida GWh sales Duke Energy Ohio GWh sales Duke Energy Indiana GWh sales Total Electric Utilities and Infrastructure GWh sales Net proportional MW capacity in operation Years Ended December 31, 2022 $ 26,024 8,862 5,354 4,550 1,315 374 20,455 7 5,576 467 1,565 4,478 536 13 $ 3,929 90,915 70,435 46,214 24,269 31,979 263,812 49,539 2021 $ 22,603 6,332 5,340 4,251 1,233 204 17,360 13 5,256 534 1,432 4,358 494 14 $ 3,850 87,796 66,797 42,422 24,129 31,388 252,532 49,871 Variance $3,421 2,530 14 299 82 170 3,095 (6) 320 (67) 133 120 42 (1) 79 $ 3,119 3,638 3,792 140 591 11,280 (332) Year Ended December 31, 2022, as compared to 2021 EU&I’s higher segment income is due to higher retail sales volumes and favorable weather, partially offset by higher depreciation and higher interest expense. The following is a detailed discussion of the variance drivers by line item. Operating Revenues. The variance was driven primarily by: • a $2,332 million increase in fuel revenues primarily due to higher fuel prices and retail sales volumes; • a $456 million increase in weather-normal retail sales volumes; • a $293 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; • a $145 million increase in retail sales due to favorable weather compared to prior year; • a $141 million increase in wholesale revenues primarily due to higher capacity volumes; and • a $137 million increase in rider revenues primarily due to higher sales volumes and storm securitization in North Carolina. Partially offset by: • an $86 million decrease in capacity revenue primarily due to accelerated recovery of the retired coal units Crystal River 1 and 2 in 2021; and • a $67 million decrease due to the Indiana Supreme Court ruling on recovery of certain coal ash costs. 34 Operating Expenses. The variance was driven primarily by: • a $2,530 million increase in fuel used in electric generation and purchased power due to higher fuel prices and volumes from customer demand; • a $299 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; • a $170 million increase in impairment of assets and other charges due to the Indiana court rulings on recovery of certain coal ash costs; and • an $82 million increase in property and other taxes primarily due to higher property taxes as well as higher revenue related taxes. Other Income and Expenses, net. The variance is primarily due to coal ash insurance litigation proceeds received in the prior year, partially offset by an increase in AFUDC equity due to higher capital expenditures. Interest Expense. The variance was primarily driven by higher interest rates and outstanding debt balances. 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. The ETRs for the years ended December 31, 2022, and 2021, were 12.0% and 11.3%, respectively. The increase in the ETR was primarily due to a decrease in the amortization of excess deferred taxes. PART IIGas Utilities and Infrastructure (in millions) Operating Revenues Operating Expenses Cost of natural gas Operation, maintenance and other Depreciation and amortization Property and other taxes Impairment of assets and other charges Total operating expenses Gains on Sales of Other Assets and Other, net Operating Income Other income and expenses, net Interest Expense Income Before Income Taxes Income Tax Expense Segment Income Years Ended December 31, 2022 2,840 1,276 532 327 138 (12) 2,261 1 580 78 182 476 8 468 $ $ 2021 2,112 705 442 303 120 19 1,589 — 523 70 142 451 55 396 $ $ Variance $ 728 571 90 24 18 (31) 672 1 57 8 40 25 (47) 72 $ Piedmont Local Distribution Company (LDC) throughput (Dth) Duke Energy Midwest LDC throughput (MCF) Year Ended December 31, 2022, as compared to 2021 GU&I’s results were impacted primarily by margin growth, partially offset by higher operation and maintenance costs and higher interest expense. The following is a detailed discussion of the variance drivers by line item. Operating Revenues. The variance was driven primarily by: • a $383 million increase due to higher natural gas costs passed through to customers and higher volumes; • a $213 million increase due to increased secondary marketing activity including higher off-system sales natural gas costs; • a $64 million increase due to base rate increases; • a $48 million increase due to rider revenues related to Ohio Capital Expenditure Program (CEP); and • a $4 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 $383 million increase in cost of natural gas due to higher natural gas costs passed through to customers and higher volumes; 628,035,471 90,010,669 542,759,891 85,787,624 85,275,580 4,223,045 • a $188 million increase in cost of natural gas due to increased secondary marketing activity including higher off-system sales natural gas costs; • a $90 million increase in operations, maintenance and other primarily due to the MGP settlement, higher spend on internal and contract labor costs, locates, fleet, and materials; • a $24 million increase in depreciation and amortization due to additional plant in service and lower CEP deferrals; and • an $18 million increase in property and other taxes due to lower CEP deferrals. Partially offset by: • a $31 million decrease in impairment of assets and other charges due to an impairment of propane caverns in 2021, which was partially reversed in 2022. Interest Expense. The variance was primarily due to higher interest rates and outstanding debt balances and lower CEP Rider deferrals. Income Tax Expense. The decrease in tax expense was primarily due to an increase in the amortization of excess deferred taxes related to the Ohio MGP Settlement, partially offset by an increase in pretax income. The ETRs for the years ended December 31, 2022, and 2021, were 1.7% and 12.2%, 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. 35 PART IIOther (in millions) Operating Revenues Operating Expenses Gains (Losses) on Sales of Other Assets and Other, net Operating Loss Other Income and Expenses, net Interest Expense Loss Before Income Taxes Income Tax Benefit Less: Net Income Attributable to Noncontrolling Interests Less: Preferred Dividends Net Loss Years Ended December 31, 2022 122 298 14 (162) 65 778 (875) (244) — 106 (737) $ $ 2021 113 409 (1) (297) 125 643 (815) (281) 1 106 (641) $ $ Variance $ $ 9 (111) 15 135 (60) 135 (60) 37 (1) — (96) Year Ended December 31, 2022, as compared to 2021 The higher net loss was driven by higher interest expense and lower return on investments, partially offset by higher equity earnings from the NMC investment and prior year obligations to the Duke Energy Foundation. Operating Expenses. The decrease was primarily driven by prior year obligations to the Duke Energy Foundation, lower expense on certain employee benefit obligations and lower asset impairments to optimize the company’s real estate portfolio and reduce office space. 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 interest rates and outstanding debt balances. Income Tax Benefit. The decrease in the tax benefit was primarily due to a reduction of a valuation allowance relating to a capital loss carryforward in the prior year, partially offset by lower state tax benefit in the prior year. The ETRs for the years ended December 31, 2022, and 2021, were 27.9% and 34.5%, respectively. The decrease in the ETR was primarily due to a reduction of a valuation allowance relating to a capital loss carryforward in the prior year. LOSS FROM DISCONTINUED OPERATIONS, NET OF TAX (in millions) Loss From Discontinued Operations, net of tax Years Ended December 31, 2022 $ (1,323) 2021 $ (144) Variance $ (1,179) Year Ended December 31, 2022, as compared to December 31, 2021 The variance was primarily driven by the estimated impairment on the sale of the Commercial Renewables Disposal Groups in the current year. SUBSIDIARY REGISTRANTS Basis of Presentation The results of operations and variance discussion for the Subsidiary Registrants is presented in a reduced disclosure format in accordance with General Instruction (I)(2)(a) of Form 10-K. 36 PART IIDUKE ENERGY CAROLINAS Results of Operations (in millions) Operating Revenues Operating Expenses Fuel used in electric generation and purchased power Operation, maintenance and other Depreciation and amortization Property and other taxes Impairment of assets and other charges Total operating expenses Gains on Sales of Other Assets and Other, net Operating Income Other Income and Expenses, net Interest Expense Income Before Income Taxes Income Tax Expense Net Income Years Ended December 31, 2022 $ 7,857 2021 $ 7,102 Variance $ 755 2,015 1,892 1,526 340 26 5,799 4 2,062 221 557 1,726 126 1,601 1,833 1,468 320 227 5,449 2 1,655 270 538 1,387 51 414 59 58 20 (201) 350 2 407 (49) 19 339 75 $ 1,600 $ 1,336 $ 264 The following table shows the percent changes in GWh sales and average number of customers for Duke Energy Carolinas. The below 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 Residential sales General service sales Industrial sales Wholesale power sales Joint dispatch sales Total sales Average number of customers 2022 0.5% 4.0% 1.0% 1.3% 0.9% 3.6% 1.8% Year Ended December 31, 2022, as compared to 2021 Operating Revenues. The variance was driven primarily by: • a $396 million increase in fuel revenues driven by higher fuel prices and higher volumes; • a $156 million increase in weather-normal retail sales volumes; • a $78 million increase in retail sales due to favorable weather compared to prior year; • a $63 million increase due to higher pricing from the North Carolina retail rate case, net of a return of EDIT to customers; and • a $52 million increase in rider revenues primarily due to energy efficiency, storm securitization, and competitive procurement of renewable energy programs. Operating Expenses. The variance was driven primarily by: • a $414 million increase in fuel used in electric generation and purchased power primarily due to higher coal and natural gas prices and changes in the generation mix, partially offset by the recovery of fuel expenses; • a $58 million increase in depreciation and amortization primarily due to new depreciation rates associated with the North Carolina rate case and a higher depreciable base, partially offset by lower depreciation related to the extension of the lives of nuclear facilities; and • a $20 million increase in property and other taxes due to higher franchise and property taxes and a prior year sales and use tax refund. Partially offset by: • a $201 million decrease in impairment of assets and other charges primarily due to the prior year South Carolina Supreme Court decision on coal ash. Other Income and Expenses. The variance was driven by the coal ash insurance litigation proceeds received in the prior year, partially offset by an increase in AFUDC equity due to higher capital expenditures. Interest Expense. The variance was driven by higher interest rates and outstanding debt balances. Income Tax Expense. The increase in tax expense was primarily due to • a $59 million increase in operation, maintenance and other expense an increase in pretax income. primarily due to higher storm restoration costs, higher bad debt expense and higher nuclear outage and maintenance costs; 37 PART IIPROGRESS ENERGY Results of Operations (in millions) Operating Revenues Operating Expenses Fuel used in electric generation and purchased power Operation, maintenance and other Depreciation and amortization Property and other taxes Impairment of assets and other charges Total operating expenses Gains on Sales of Other Assets and Other, net Operating Income Other Income and Expenses, net Interest Expense Income Before Income Taxes Income Tax Expense Net Income Less: Net Income Attributable to Noncontrolling Interests Net Income Attributable to Parent Year Ended December 31, 2022, as compared to 2021 Operating Revenues. The variance was driven primarily by: • a $1,481 million increase in fuel revenues driven by higher fuel prices and higher volumes; • a $249 million increase in weather-normal retail sales volumes; • a $230 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; • an $85 million increase in rider revenues due to higher revenues from the Storm Protection Plan at Duke Energy Florida and storm securitization and energy efficiency riders at Duke Energy Progress; • a $53 million increase in wholesale revenues, net of fuel, due to higher capacity volumes; and • a $43 million increase in retail sales due to favorable weather. Partially offset by: • an $86 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 $1,494 million increase in fuel used in electric generation and purchased power primarily due to higher demand and higher natural gas prices; 38 Years Ended December 31, 2022 $ 13,125 2021 $ 11,057 Variance $ 2,068 5,078 2,458 2,142 607 12 10,297 11 2,839 181 844 2,176 348 1,828 — 3,584 2,529 1,929 542 82 8,666 14 2,405 215 794 1,826 227 1,599 1 1,494 (71) 213 65 (70) 1,631 (3) 434 (34) 50 350 121 229 (1) $ 1,828 $ 1,598 $ 230 • a $213 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 $65 million increase in property and other taxes primarily due to an increase in gross receipts taxes at Duke Energy Florida and higher franchise and property taxes at Duke Energy Progress. Partially offset by: • a $71 million decrease in operation, maintenance and other expense primarily due to reduced storm amortization at Duke Energy Florida; and • a $70 million decrease in impairment of assets and other charges due to the prior year South Carolina Supreme Court decision on coal ash and optimization of the company’s real estate portfolio and reduction of office space. Other Income and Expenses, net. The variance is primarily due to coal ash insurance litigation proceeds received in the prior year at Duke Energy Progress. Interest Expense. The variance was driven primarily by higher interest expense and outstanding debt balances at Duke Energy Progress and Duke Energy Florida. 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. PART IIDUKE ENERGY PROGRESS Results of Operations (in millions) Operating Revenues Operating Expenses Fuel used in electric generation and purchased power Operation, maintenance and other Depreciation and amortization Property and other taxes Impairment of assets and other charges Total operating expenses Gains on Sales of Other Assets and Other, net Operating Income Other Income and Expenses, net Interest Expense Income Before Income Taxes Income Tax Expense Net Income Years Ended December 31, 2022 $ 6,753 2021 $ 5,780 Variance $ 973 2,492 1,475 1,187 190 7 5,351 4 1,406 114 354 1,166 158 $ 1,008 $ 1,778 1,467 1,097 159 63 4,564 13 1,229 143 306 1,066 75 991 714 8 90 31 (56) 787 (9) 177 (29) 48 100 83 17 $ The following table shows the percent changes in GWh sales and average number of customers for Duke Energy Progress. The below 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 Residential sales General service sales Industrial sales Wholesale power sales Joint dispatch sales Total sales Average number of customers 2022 (0.8)% 7.5% 18.1% 2.5% 27.5% 5.4% 1.9% Year Ended December 31, 2022, as compared to 2021 Operating Revenues. The variance was driven primarily by: • a $699 million increase in fuel revenues driven by higher fuel prices and higher volumes; • a $128 million increase due to higher pricing from the North Carolina retail rate case, net of a return of EDIT to customers; • a $58 million increase in weather-normal retail sales volumes; • a $39 million increase in rider revenues primarily due to storm securitization and energy efficiency riders, partially offset by the Renewable Energy Portfolio Standards rider; • a $27 million increase in retail sales due to favorable weather compared to the prior year; and • a $20 million increase in wholesale revenues, net of fuel, due to higher capacity volumes. Operating Expenses. The variance was driven primarily by: • a $714 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 expense; 39 • a $90 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; and • a $31 million increase in property and other taxes due to higher franchise and property taxes and a prior year sales and use tax refund. Partially offset by: • a $56 million decrease in impairment of assets and other charges primarily due to the prior year South Carolina Supreme Court decision on coal ash and optimization of the company’s real estate portfolio and reduction of office space. Other Income and Expenses, net. The variance was primarily due to coal ash insurance litigation proceeds received in the prior year. Interest Expense. The variance was driven primarily by higher outstanding debt balances. 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. PART IIDUKE ENERGY FLORIDA Results of Operations (in millions) Operating Revenues Operating Expenses Fuel used in electric generation and purchased power Operation, maintenance and other Depreciation and amortization Property and other taxes Impairment of assets and other charges Total operating expenses Gains on Sales of Other Assets and Other, net Operating Income Other Income and Expenses, net Interest Expense Income Before Income Taxes Income Tax Expense Net Income Years Ended December 31, 2022 $ 6,353 2021 $ 5,259 Variance $ 1,094 2,586 967 955 421 4 4,933 2 1,422 74 362 1,134 225 909 $ 1,806 1,048 831 383 19 4,087 1 1,173 71 319 925 187 738 $ 780 (81) 124 38 (15) 846 1 249 3 43 209 38 171 $ The following table shows the percent changes in GWh sales and average number of customers for Duke Energy Florida. The below 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 year Residential sales General service sales Industrial sales Wholesale power sales Total sales Average number of customers 2022 1.5% 3.5% 6.6% 38.7% 8.9% 1.7% Year Ended December 31, 2022, as compared to 2021 Operating Revenues. The variance was driven primarily by: • a $782 million increase in fuel revenues driven by higher fuel prices and higher volumes; • a $191 million increase in weather-normal retail sales volumes; • a $102 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; • a $46 million increase in rider revenues primarily due to increased Storm Protection Plan rider revenue driven by higher debt and equity returns from increased capital expenditures in the current year; • a $33 million increase in wholesale power revenues, net of fuel, primarily due to higher capacity revenues and bulk power sales; and • a $16 million increase in retail sales due to favorable weather in the current year. Partially offset by: • an $86 million decrease in capacity revenue primarily due to accelerated recovery of the retired coal units Crystal River 1 and 2 in 2021. Operating Expenses. The variance was driven primarily by: • a $780 million increase in fuel used in electric generation and purchased power primarily due to higher natural gas prices; • a $124 million increase in depreciation and amortization primarily due to an increase in depreciation rates starting in January 2022; and • a $38 million increase in property and other taxes primarily due to an increase in gross receipt taxes driven by higher revenues. Partially offset by: • an $81 million decrease in operation, maintenance and other primarily due to reduced storm amortization and reduced vegetation management costs, partially offset by higher bad debt expense; and • a $15 million decrease in impairment of assets and other charges due to the prior year optimization of the company’s real estate portfolio and reduction of office space. Interest Expense. The variance was driven by higher interest rates and outstanding debt balances. Income Tax Expense. The increase in tax expense was primarily due to higher pretax income. 40 PART IIDUKE ENERGY OHIO Results of Operations (in millions) Operating Revenues Regulated electric Regulated natural gas Total operating revenues Operating Expenses Fuel used in electric generation and purchased power Cost of natural gas Operation, maintenance and other Depreciation and amortization Property and other taxes Impairment of assets and other charges Total operating expenses Gains on Sales of Other Assets and Other, net Operating Income Other Income and Expenses, net Interest Expense Income Before Income Taxes Income Tax (Benefit) Expense Net Income 2022 $ 1,798 716 2,514 657 261 523 324 369 (10) 2,124 1 391 19 129 281 (21) 302 $ Years Ended December 31, 2021 Variance $ 1,493 544 2,037 409 136 479 307 355 25 1,711 1 327 18 111 234 30 204 $ $ $ 305 172 477 248 125 44 17 14 (35) 413 — 64 1 18 47 (51) 98 The following table shows the percent changes in GWh sales of electricity, MCF of natural gas delivered and average number of electric and natural gas customers for Duke Energy Ohio. The below 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 Residential sales General service sales Industrial sales Wholesale electric power sales Other natural gas sales Total sales Average number of customers Electric 2022 (0.5)% (2.1)% (6.8)% (11.0)% n/a 0.6% 1.3% Natural Gas 2022 13.7% 1.3% 0.7% n/a (3.6)% 4.9% 0.6% Year Ended December 31, 2022, as compared to 2021 Operating Revenues. The variance was driven primarily by: • a $372 million increase in fuel related revenues primarily due to higher retail sales volumes and higher fuel rates in the current year in response to an increase in natural gas prices and purchased power expense; • a $55 million increase in retail revenue riders primarily due to the Ohio CEP and Distribution Capital Investment Rider (DCI); • a $39 million increase in other electric revenues primarily due to Distribution Decoupling rider adjustments recorded in 2021; • a $10 million increase in bulk power marketing sales; and • a $10 million increase due to favorable weather in the current year. Partially offset by: • a $15 million decrease due to the MGP Settlement. Operating Expenses. The variance was driven primarily by: • a $373 million increase in fuel expense primarily driven by higher retail prices and increased volumes for natural gas and purchased power; • a $44 million increase in operation, maintenance and other expense primarily due to the MGP Settlement, partially offset by employee related costs; • a $17 million increase in depreciation and amortization primarily driven by increases in distribution plant in service and lower CEP deferrals, partially offset by rate case adjustments for the over amortization of meter assets in 2022; and • a $14 million increase in property and other taxes primarily due to higher property taxes, higher kilowatt and natural gas distribution taxes and a lower Network Integration Transmission Services tax deferral. Partially offset by: • a $35 million decrease in impairment of assets and other charges primarily due to the prior year impairments related to the propane caverns in Ohio and the optimization of the company’s real estate portfolio and reduction of office space, partially offset by the partial reversal of the propane cavern impairment in the current year. Interest Expense. The variance was primarily due to higher interest rates, outstanding debt balances and post in-service carrying costs, partially offset by AFUDC debt. Income Tax (Benefit) Expense. The decrease in tax expense was primarily due to an increase in the amortization of excess deferred taxes related to the MGP Settlement. 41 PART IIDUKE ENERGY INDIANA Results of Operations (in millions) Operating Revenues Operating Expenses Fuel used in electric generation and purchased power Operation, maintenance and other Depreciation and amortization Property and other taxes Impairment of assets and other charges Total operating expenses Operating Income Other Income and Expenses, net Interest Expense Income Before Income Taxes Income Tax (Benefit) Expense Net Income Years Ended December 31, 2022 $ 3,922 2021 $ 3,174 Variance $ 748 1,819 729 645 75 388 3,656 266 36 189 113 (24) 137 $ 985 750 615 73 9 2,432 742 42 196 588 107 481 $ 834 (21) 30 2 379 1,224 (476) (6) (7) (475) (131) $ (344) The following table shows the percent changes in GWh sales and average number of customers for Duke Energy Indiana. The below 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 Residential sales General service sales Industrial sales Wholesale power sales Total sales Average number of customers 2022 (0.4)% 1.8% (12.1)% 5.4% 1.9% 1.4% Year Ended December 31, 2022, as compared to 2021 Operating Revenues. The variance was driven primarily by: • a $700 million increase in retail fuel revenues primarily due to higher fuel cost recovery driven by higher retail sales volumes and fuel prices; • a $74 million increase primarily due to wholesale revenues, including fuel revenues, driven by higher rates and the bulk power marketing sharing provision; • a $46 million increase in weather-normal retail sales volumes primarily due to higher nonresidential customer demand; and • a $20 million increase in retail sales due to favorable weather. Partially offset by: • a $67 million decrease due to the Indiana Supreme Court ruling on recovery of certain coal ash costs; • a $13 million decrease primarily due to the Utility Receipts Tax repeal; and • a $12 million decrease primarily due to fixed bill plans and other electric revenues. Operating Expenses. The variance was driven primarily by: • an $834 million increase in fuel used in electric generation and purchased power primarily due to higher purchased power expense and higher natural gas and coal costs; • a $379 million increase in impairment of assets and other charges primarily due to the Indiana court rulings on recovery of certain coal ash costs; and • a $30 million increase in depreciation and amortization primarily due to additional plant in service, Step 2 rates true-up adjustment to depreciation expense and coal ash depreciation. Partially offset by: • a $21 million decrease in operation, maintenance and other primarily due to lower outage, base maintenance work and employee related costs. Income Tax (Benefit) Expense. The decrease in tax expense was primarily due to a decrease in pretax income and an increase in the amortization of excess deferred income taxes. 42 PART IIPIEDMONT Results of Operations (in millions) Operating Revenues Operating Expenses Cost of natural gas Operation, maintenance and other Depreciation and amortization Property and other taxes Impairment of assets and other charges Total operating expenses Gains on Sales of Other Assets and Other, net Operating Income Other Income and Expenses, net Interest Expense Income Before Income Taxes Income Tax Expense Net Income Years Ended December 31, 2022 $ 2,124 2021 $ 1,569 Variance $ 555 1,015 368 222 57 18 1,680 4 448 54 140 362 39 323 $ 569 327 213 55 10 1,174 — 395 64 119 340 30 310 $ 446 41 9 2 8 506 4 53 (10) 21 22 9 13 $ The following table shows the percent changes in Dth 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 Residential deliveries Commercial deliveries Industrial deliveries Power generation deliveries For resale Total throughput deliveries Secondary market volumes Average number of customers 2022 5.0% 8.5% 1.2% 23.3% (4.3)% 15.7% 18.9% 1.4% 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. Year Ended December 31, 2022, as compared to 2021 Operating Revenues. The variance was driven primarily by: • a $257 million increase due to higher natural gas costs passed through to customers and higher volumes; • a $213 million increase due to increased secondary marketing activity including higher off-system sales natural gas costs; and • a $64 million increase due to base rate increases. Operating Expenses. The variance was driven primarily by: • a $257 million increase in cost of natural gas due to higher natural gas costs passed through to customers and higher volumes; • a $189 million increase in cost of natural gas due to increased secondary marketing activity including higher off-system sales higher natural gas costs; and • a $41 million increase in operation, maintenance and other due to higher spend on internal and contract labor costs, locates, fleet, materials and other. Other Income and Expenses, net. The variance was driven primarily by a decrease in AFUDC equity base. Interest Expense. The variance was primarily due to higher debt outstanding and interest rates. 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. CRITICAL ACCOUNTING POLICIES AND ESTIMATES Preparation of financial statements requires the application of accounting policies, judgments, assumptions and estimates that can significantly affect the reported results of operations, cash flows or the amounts of assets and liabilities recognized in the financial statements. Judgments made include the likelihood of success of particular projects, possible legal and regulatory challenges, earnings assumptions on pension and other benefit fund investments and anticipated recovery of costs, especially through regulated operations. 43 PART IIManagement discusses these policies, estimates and assumptions with senior members of management on a regular basis and provides periodic updates on management decisions to the Audit Committee. Management believes the areas described below require significant judgment in the application of accounting policy or in making estimates and assumptions that are inherently uncertain and that may change in subsequent periods. For further information, see Note 1 to the Consolidated Financial Statements, “Summary of Significant Accounting Policies.” Regulated Operations Accounting Substantially all of Duke Energy’s regulated operations meet the criteria for application of regulated operations accounting treatment. As a result, Duke Energy is required to record assets and liabilities that would not be recorded for nonregulated entities. Regulatory assets generally represent incurred costs that have been deferred because such costs are probable of future recovery in customer rates. Regulatory liabilities are recorded when it is probable that a regulator will require Duke Energy to make refunds to customers or reduce rates to customers for previous collections or deferred revenue for costs that have yet to be incurred. Management continually assesses whether recorded regulatory assets are probable of future recovery by considering factors such as: • applicable regulatory environment changes; • historical regulatory treatment for similar costs in Duke Energy’s jurisdictions; • litigation of rate orders; • recent rate orders to other regulated entities; • levels of actual return on equity compared to approved rates of return on equity; and • the status of any pending or potential deregulation legislation. If future recovery of costs ceases to be probable, asset write-offs would be recognized in operating income. Additionally, regulatory agencies can provide flexibility in the manner and timing of the depreciation of property, plant and equipment, recognition of asset retirement costs and amortization of regulatory assets, or may disallow recovery of all or a portion of certain assets. As required by regulated operations accounting rules, significant judgment can be required to determine if an otherwise recognizable incurred cost qualifies to be deferred for future recovery as a regulatory asset. Significant judgment can also be required to determine if revenues previously recognized are for entity specific costs that are no longer expected to be incurred or have not yet been incurred and are therefore a regulatory liability. For further information, see Note 4 to the Consolidated Financial Statements, “Regulatory Matters.” Goodwill Impairment Assessments Duke Energy performed its annual goodwill impairment tests for all reporting units as of August 31, 2022. Additionally, Duke Energy monitors all relevant events and circumstances during the year to determine if an interim impairment test is required. Such events and circumstances include an adverse regulatory outcome, declining financial performance and deterioration of industry or market conditions. As of August 31, 2022, all of the reporting units’ estimated fair value of equity substantially exceeded the carrying value of equity. The fair values of the reporting units were calculated using a weighted combination of the income approach, which estimates fair value based on discounted cash flows, and the market approach, which estimates fair value based on market comparables within the utility and energy industries. Estimated future cash flows under the income approach are based on Duke Energy’s internal business plan. Significant assumptions used are growth rates, future rates of return expected to result from ongoing rate regulation and discount rates. Management determines the appropriate discount rate for each of its reporting units based on the Weighted Average Cost of Capital (WACC) for each individual reporting unit. The WACC takes into account both the after-tax cost of debt and cost of equity. A major component of the cost of equity is the current risk-free rate on 20-year U.S. Treasury bonds. In the 2022 impairment tests, Duke Energy considered implied WACCs for certain peer companies in determining the appropriate WACC rates to use in its analysis. As each reporting unit has a different risk profile based on the nature of its operations, including factors such as regulation, the WACC for each reporting unit may differ. Accordingly, the WACCs were adjusted, as appropriate, to account for company specific risk premiums. The discount rates used for calculating the fair values as of August 31, 2022, for each of Duke Energy’s reporting units ranged from 6.6% to 6.9%. The underlying assumptions and estimates are made as of a point in time. Subsequent changes, particularly changes in the discount rates, authorized regulated rates of return or growth rates inherent in management’s estimates of future cash flows, could result in future impairment charges. One of the most significant assumptions utilized in determining the fair value of reporting units under the market approach is implied market multiples for certain peer companies. Management selects comparable peers based on each peer’s primary business mix, operations, and market capitalization compared to the applicable reporting unit and calculates implied market multiples based on available projected earnings guidance and peer company market values as of August 31. The implied market multiples used for calculating the fair values as of August 31, 2022, for each of Duke Energy’s reporting units ranged from 10.3 to 13.6. Duke Energy primarily operates in environments that are rate-regulated. In such environments, revenue requirements are adjusted periodically by regulators based on factors including levels of costs, sales volumes and costs of capital. Accordingly, Duke Energy’s regulated utilities operate to some degree with a buffer from the direct effects, positive or negative, of significant swings in market or economic conditions. However, significant changes in discount rates or implied market multiples over a prolonged period may have a material impact on the fair value of equity. Duke Energy has $19.3 billion in Goodwill at both December 31, 2022, and 2021. For further information, see Note 12 to the Consolidated Financial Statements, “Goodwill and Intangible Assets.” Asset Retirement Obligations AROs are recognized for legal obligations associated with the retirement of property, plant and equipment at the present value of the projected liability in the period in which it is incurred, if a reasonable estimate of fair value can be made. Duke Energy has $12.7 billion and $12.6 billion of AROs as of December 31, 2022, and 2021, respectively. See Note 10, “Asset Retirement Obligations,” for further details including a rollforward of related liabilities. The present value of the initial obligation and subsequent updates are based on discounted cash flows, which include estimates regarding the amount and timing of future cash flows, regulatory, legal, and legislative decisions, selection of discount rates and cost escalation rates, among other factors. These estimates are subject to change. Obligations for nuclear decommissioning are based on site-specific cost studies. Duke Energy Carolinas and Duke Energy Progress assume prompt dismantlement of the nuclear facilities after operations are ceased. During 2020, Duke Energy Florida, closed an agreement for the accelerated decommissioning of the Crystal River Unit 3 nuclear power station after receiving approval from the NRC and FPSC. The retirement obligations for the decommissioning of Crystal River Unit 3 nuclear power station are measured based on accelerated decommissioning from 2020 continuing through 2027. Duke Energy Carolinas, Duke Energy Progress and Duke Energy Florida also assume that spent fuel will be stored on-site until such time that it can be transferred to a yet to be built DOE facility. 44 PART IIObligations for closure of ash basins are based upon discounted cash flows of estimated costs for site-specific plans. In prior years, certain ash basins have had probability weightings applied to them based on different potential closure methods and the probabilities surrounding pending legal changes. For further information, see Notes 4, 5 and 10 to the Consolidated Financial Statements, “Regulatory Matters,” “Commitments and Contingencies” and “Asset Retirement Obligations.” Discontinued Operations Duke Energy calculated an estimated impairment on the disposition of its Commercial Renewables Disposal Groups as of December 31, 2022. The impairment was recorded to write-down the carrying amount to fair value, LIQUIDITY AND CAPITAL RESOURCES Sources and Uses of Cash less cost to sell. The fair value was primarily determined from the income approach using discounted cash flows, but also considered market information obtained through the bidding process. Estimated future cash flows under the income approach were based on Duke Energy’s forecast, which was informed by existing power purchase agreements with offtakers and forward merchant curves. Significant assumptions used in the income approach include forward merchant curves and discount rates. The discount rates take into account both the after-tax cost of debt and cost of equity. The actual loss will be recorded based on final sales agreements and could be materially different than the estimated loss. For further information, See Note 2 to the Consolidated Financial Statements, “Dispositions.” 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 and projected tax credits to be generated relating to the IRA, Duke Energy does not expect to be a significant federal cash taxpayer until around 2030. CAPITAL EXPENDITURES Duke Energy continues to focus on reducing risk and positioning its business for future success and will invest principally in its strongest business sectors. Duke Energy’s projected capital and investment expenditures, including AFUDC debt and capitalized interest, for the next three fiscal years are included in the table below. (in millions) Electric Generation(a) Electric Transmission Electric Distribution Environmental and Other EU&I Growth Capital Maintenance Total EU&I GU&I Other Total projected capital and investment expenditures (a) Includes nuclear fuel of approximately $1.9 billion in 2023-2025. Debt 2023 2024 2025 $ 1,650 $ 1,950 $ 3,150 1,550 3,750 675 7,625 2,800 1,925 3,750 500 8,125 2,625 1,850 4,100 475 9,575 2,425 10,425 1,375 10,750 1,150 400 $ 12,200 375 $ 12,275 12,000 975 425 $13,400 Long-term debt maturities and the interest payable on long-term debt each represent a significant cash requirement for the Duke Energy Registrants. See Note 7 to the Consolidated Financial Statements, “Debt and Credit Facilities,” for information regarding the Duke Energy Registrants’ long-term debt at December 31, 2022, the weighted average interest rate applicable to each long-term debt category and a schedule of long-term debt maturities over the next five years. Fuel and Purchased Power Fuel and purchased power includes firm capacity payments that provide Duke Energy with uninterrupted firm access to electricity transmission capacity and natural gas transportation contracts, as well as undesignated contracts and contracts that qualify as NPNS. Duke Energy’s contractual cash obligations for fuel and purchased power as of December 31, 2022, are as follows: (in millions) Fuel and purchased power Payments Due by Period Less than 1 year (2023) 5,840 $ 2-3 years (2024 & 2025) 7,277 $ 4-5 years (2026 & 2027) 3,674 $ Total 23,255 $ More than 5 years (2028 & beyond) 6,464 $ 45 PART IIOther Purchase Obligations Dividend Payments Other purchase obligations includes contracts for software, telephone, data and consulting or advisory services, contractual obligations for Engineering, Procurement, and Construction agreement costs for new generation plants, solar facilities, plant refurbishments, maintenance and day-to-day contract work and commitments to buy certain products. Amount excludes certain open purchase orders for services that are provided on demand for which the timing of the purchase cannot be determined. Total cash commitments for related other purchase obligation expenditures are $12,095 million, with $11,118 million expected to be paid in the next 12 months. See Note 6 to the Consolidated Financial Statements, “Leases” for a schedule of both finance lease and operating lease payments over the next five years. See Note 10 to the Consolidated Financial Statements, “Asset Retirement Obligations” for information on nuclear decommissioning trust funding obligations and the closure of ash impoundments. Duke Energy performs ongoing assessments of its respective guarantee obligations to determine whether any liabilities have been incurred as a result of potential increased nonperformance risk by third parties for which Duke Energy has issued guarantees. See Note 8 to the Consolidated Financial Statements, “Guarantees and Indemnifications,” for further details of the guarantee arrangements. Issuance of these guarantee arrangements is not required for the majority of Duke Energy’s operations. Thus, if Duke Energy discontinued issuing these guarantees, there would not be a material impact to the consolidated results of operations, cash flows or financial position. Other than the guarantee arrangements discussed in Note 8 and off-balance sheet debt related to non- consolidated VIEs, Duke Energy does not have any material off-balance sheet financing entities or structures. For additional information, see Note 18 to the Consolidated Financial Statements, “Variable Interest Entities.” Cash and Liquidity The Subsidiary Registrants generally maintain minimal cash balances and use short-term borrowings to meet their working capital needs and other cash requirements. The Subsidiary Registrants, excluding Progress Energy, support their short-term borrowing needs through participation with Duke Energy and certain of its other subsidiaries in a money pool arrangement. The companies with short-term funds may provide short-term loans to affiliates participating under this arrangement. See Note 7 to the Consolidated Financial Statements, “Debt and Credit Facilities,” for additional discussion of the money pool arrangement. Duke Energy and the Subsidiary Registrants, excluding Progress Energy, may also use short-term debt, including commercial paper and the money pool, as a bridge to long-term debt financings. The levels of borrowing may vary significantly over the course of the year due to the timing of long-term debt financings and the impact of fluctuations in cash flows from operations. From time to time, Duke Energy’s current liabilities exceed current assets resulting from the use of short-term debt as a funding source to meet scheduled maturities of long-term debt, as well as cash needs, which can fluctuate due to the seasonality of its businesses. As of December 31, 2022, Duke Energy had approximately $409 million of cash on hand, $5.2 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 Notes 7 and 20 to the Consolidated Financial Statements, “Debt and Credit Facilities” and “Stockholders’ Equity,” respectively, for information regarding Duke Energy’s debt and equity issuances, debt maturities and available credit facilities including the Master Credit Facility. Credit Facilities and Registration Statements See Note 7 to the Consolidated Financial Statements, “Debt and Credit Facilities,” for further information regarding credit facilities and shelf registration statements available to Duke Energy and the Duke Energy Registrants. In 2022, Duke Energy paid quarterly cash dividends for the 96th consecutive year and expects to continue its policy of paying regular cash dividends in the future. There is no assurance as to the amount of future dividends because they depend on future earnings, capital requirements, financial condition and are subject to the discretion of the Board of Directors. Duke Energy targets a dividend payout ratio of between 65% and 75%, based upon adjusted EPS. Duke Energy increased the dividend by approximately 2% annually in both 2022 and 2021, and the company remains committed to continued growth of the dividend. Dividend and Other Funding Restrictions of Duke Energy Subsidiaries As discussed in Note 4 to the Consolidated Financial Statements, “Regulatory Matters,” Duke Energy’s public utility operating companies have restrictions on the amount of funds that can be transferred to Duke Energy through dividends, advances or loans as a result of conditions imposed by various regulators in conjunction with merger transactions. Duke Energy Progress and Duke Energy Florida also have restrictions imposed by their first mortgage bond indentures and Articles of Incorporation, which in certain circumstances, limit their ability to make cash dividends or distributions on common stock. Additionally, certain other Duke Energy subsidiaries have other restrictions, such as minimum working capital and tangible net worth requirements pursuant to debt and other agreements that limit the amount of funds that can be transferred to Duke Energy. At December 31, 2022, the amount of restricted net assets of subsidiaries of Duke Energy that may not be distributed to Duke Energy in the form of a loan or dividend does not exceed a material amount of Duke Energy’s net assets. Duke Energy does not have any legal or other restrictions on paying common stock dividends to shareholders out of its consolidated equity accounts. Although these restrictions cap the amount of funding the various operating subsidiaries can provide to Duke Energy, management does not believe these restrictions will have a significant impact on Duke Energy’s ability to access cash to meet its payment of dividends on common stock and other future funding obligations. Cash Flows From Operating Activities Cash flows from operations of EU&I and GU&I are primarily driven by sales of electricity and natural gas, respectively, and costs of operations. These cash flows from operations are relatively stable and comprise a substantial portion of Duke Energy’s operating cash flows. Weather conditions, working capital and commodity price fluctuations and unanticipated expenses including unplanned plant outages, storms, legal costs and related settlements can affect the timing and level of cash flows from operations. As part of Duke Energy’s continued effort to improve its cash flows from operations and liquidity, Duke Energy works with vendors to improve terms and conditions, including the extension of payment terms. To support this effort, Duke Energy established a supply chain finance program (the “program”) in 2020, under which suppliers, at their sole discretion, may sell their receivables from Duke Energy to the participating financial institution. The financial institution administers the program. Duke Energy does not issue any guarantees with respect to the program and does not participate in negotiations between suppliers and the financial institution. Duke Energy does not have an economic interest in the supplier’s decision to participate in the program and receives no interest, fees or other benefit from the financial institution based on supplier participation in the program. Suppliers’ decisions on which invoices are sold do not impact Duke Energy’s payment terms, which are based on commercial terms negotiated between Duke Energy and the supplier regardless of program participation. A significant deterioration in the credit quality of Duke Energy, economic downturn or changes in the financial markets could limit the financial institutions willingness to participate in the program. Duke Energy does not believe such risk would have a material impact on our cash flows from operations or liquidity, as substantially all our payments are made outside the program. 46 PART IIDuke Energy believes it has sufficient liquidity resources through the commercial paper markets, and ultimately, the Master Credit Facility, to support these operations. Cash flows from operations are subject to a number of other factors, including, but not limited to, regulatory constraints, economic trends and market volatility (see Item 1A, “Risk Factors,” for additional information). Debt Issuances Depending on availability based on the issuing entity, the credit rating of the issuing entity, and market conditions, the Subsidiary Registrants prefer to issue first mortgage bonds and secured debt, followed by unsecured debt. This preference is the result of generally higher credit ratings for first mortgage bonds and secured debt, which typically result in lower interest costs. Duke Energy Corporation primarily issues unsecured debt. In 2023, Duke Energy anticipates issuing additional securities of $6.7 billion through debt capital markets. In certain instances Duke Energy may utilize instruments other than senior notes, including equity-content securities such as subordinated debt or preferred stock. Proceeds will primarily be for the purpose of funding capital expenditures and debt maturities. See to Note 7 to the Consolidated Financial Statements, “Debt and Credit Facilities,” for further information regarding significant debt issuances. Duke Energy’s capitalization is balanced between debt and equity as shown in the table below. Equity Debt Projected 2023 Actual 2022 Actual 2021 41% 59% 41% 59% 43% 57% Restrictive Debt Covenants Duke Energy’s debt and credit agreements contain various financial and other covenants. Duke Energy’s Master Credit Facility contains a covenant requiring the debt-to-total capitalization ratio to not exceed 65% for each borrower, excluding Piedmont, and 70% for Piedmont. Failure to meet those covenants beyond applicable grace periods could result in accelerated due dates and/or termination of the agreements or sublimits thereto. As of December 31, 2022, Duke Energy presented approximately $131 million of long-term debt as current on the Consolidated Balance Sheet as a result of a technical default due to the bankruptcy filing of a Duke Energy customer. The Duke Energy Registrants were in compliance with all other covenants related to their debt agreements as of December 31, 2022. In addition, some credit agreements may allow for acceleration of payments or termination of the agreements due to nonpayment, or acceleration of other significant indebtedness of the borrower or some of its Cash Flow Information subsidiaries. None of the debt or credit agreements contain material adverse change clauses. Credit Ratings Moody’s Investors Service, Inc. and S&P provide credit ratings for various Duke Energy Registrants. The following table includes Duke Energy and certain subsidiaries’ credit ratings and ratings outlook as of February 2023. Duke Energy Corporation Issuer Credit Rating Senior Unsecured Debt Junior Subordinated Debt/Preferred Stock Commercial Paper Duke Energy Carolinas Senior Secured Debt Senior Unsecured Debt Progress Energy Senior Unsecured Debt Duke Energy Progress Senior Secured Debt Duke Energy Florida Senior Secured Debt Senior Unsecured Debt Duke Energy Ohio Senior Secured Debt Senior Unsecured Debt Duke Energy Indiana Senior Secured Debt Senior Unsecured Debt Duke Energy Kentucky Senior Unsecured Debt Piedmont Natural Gas Senior Unsecured Moody’s Stable Baa2 Baa2 Baa3 P-2 Stable Aa3 A2 Stable Baa1 Stable Aa3 Stable A1 A3 Stable A2 Baa1 Stable Aa3 A2 Stable Baa1 Stable A3 S&P Stable BBB+ BBB BBB- A-2 Stable A BBB+ Stable BBB Stable A Stable A BBB+ Stable A BBB+ Stable A BBB+ Stable BBB+ Stable BBB+ Credit ratings are intended to provide credit lenders a framework for comparing the credit quality of securities and are not a recommendation to buy, sell or hold. The Duke Energy Registrants’ credit ratings are dependent on the rating agencies’ assessments of their ability to meet their debt principal and interest obligations when they come due. If, as a result of market conditions or other factors, the Duke Energy Registrants are unable to maintain current balance sheet strength, or if earnings and cash flow outlook materially deteriorates, credit ratings could be negatively impacted. The following table summarizes Duke Energy’s cash flows for the two most recently completed fiscal years. (in millions) Cash flows provided by (used in): Operating activities Investing activities Financing activities Net increase (decrease) in cash, cash equivalents and restricted cash Cash, cash equivalents and restricted cash at beginning of period Cash, cash equivalents and restricted cash at end of period 47 Years Ended December 31, 2022 2021 $ 5,927 $ 8,290 (11,973) 6,129 83 520 603 $ (10,935) 2,609 (36) 556 520 $ PART IIOPERATING CASH FLOWS The following table summarizes key components of Duke Energy’s operating cash flows for the two most recently completed fiscal years. (in millions) Net income Non-cash adjustments to net income Contributions to qualified pension plans Payments for AROs Working capital Other assets and Other liabilities Net cash provided by operating activities $ Years Ended December 31, $ 2022 2,455 7,385 (58) (584) (2,081) (1,190) 2021 3,579 5,941 — (540) (897) 207 Variance $ (1,124) 1,444 (58) (44) (1,184) (1,397) $ 5,927 $ 8,290 $ (2,363) The variance was driven primarily by: Partially offset by: • a $1,184 million increase in cash outflows from working capital and a $1,397 million increase in cash outflows from Other assets and Other liabilities primarily due to an increase in under-collected fuel used in generation due to higher commodity costs. • a $320 million increase in net income after adjustment for non-cash items primarily due to higher revenues from rate cases in various jurisdictions, favorable weather and volumes, partially offset by an estimated impairment on the Commercial Renewables Disposal Groups. INVESTING CASH FLOWS The following table summarizes key components of Duke Energy’s investing cash flows for the two most recently completed fiscal years. (in millions) Capital, investment and acquisition expenditures, net of return of investment capital Debt and equity securities, net Disbursements to canceled equity method investments Other investing items Net cash used in investing activities Years Ended December 31, 2022 2021 Variance $ (11,419) $ (9,752) $ (1,667) 90 — (644) 5 (855) (333) 85 855 (311) $ (11,973) $ (10,935) $ (1,038) The variance relates primarily to an increase in capital expenditures due to higher investments in EU&I, partially offset by a payment made in 2021 to fund ACP’s outstanding debt. The primary use of cash related to investing activities is typically capital, investment and acquisition expenditures, net of return of investment capital detailed by reportable business segment in the following table. (in millions) Electric Utilities and Infrastructure Gas Utilities and Infrastructure Other Total capital, investment and acquisition expenditures, net of return of investment capital Years Ended December 31, 2022 2021 Variance $ 8,985 $ 7,653 $ 1,332 1,295 1,139 1,271 828 24 311 $ 11,419 $ 9,752 $ 1,667 FINANCING CASH FLOWS The following table summarizes key components of Duke Energy’s financing cash flows for the two most recently completed fiscal years. (in millions) Issuances of long-term debt, net Notes payable and commercial paper Dividends paid Contributions from noncontrolling interests Other financing items Net cash provided by financing activities 48 Years Ended December 31, 2022 $ 7,478 $ 574 (3,179) 1,377 (121) 2021 3,758 479 (3,114) 1,575 (89) Variance $ 3,720 95 (65) (198) (32) $ 6,129 $ 2,609 $ 3,520 PART IIThe variance was driven primarily by: Partially offset by: • a $3,720 million net increase in proceeds from issuances of long-term debt, primarily due to timing of issuances and redemptions of long-term debt. • a $198 million decrease in contributions from noncontrolling interests, primarily due to fewer project investments financed by tax equity being placed into service in the current year. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK Risk Management Policies Hedging Strategies The Enterprise Risk Management policy framework at Duke Energy includes strategy, operational, project execution and financial or transaction related risks. Enterprise Risk Management includes market risk as part of the financial and transaction related risks in its framework. Duke Energy is exposed to market risks associated with commodity prices, interest rates and equity prices. Duke Energy has established comprehensive risk management policies to monitor and manage these market risks. Duke Energy’s Chief Executive Officer and Chief Financial Officer are responsible for the overall approval of market risk management policies and the delegation of approval and authorization levels. The Finance and Risk Management Committee of the Board of Directors receives periodic updates from the Chief Risk Officer and other members of management on market risk positions, corporate exposures and overall risk management activities. The Chief Risk Officer is responsible for the overall governance of managing commodity price risk, including monitoring exposure limits. The following disclosures about market risk contain forward-looking statements that involve estimates, projections, goals, forecasts, assumptions, risks and uncertainties that could cause actual results or outcomes to differ materially from those expressed in the forward-looking statements. See Item 1A, “Risk Factors,” and “Cautionary Statement Regarding Forward-Looking Information” for a discussion of the factors that may impact any such forward-looking statements made herein. Duke Energy monitors risks associated with commodity price changes on its future operations and, where appropriate, uses various commodity instruments such as electricity, coal and natural gas hedging contracts and options to mitigate the effect of such fluctuations on operations. Duke Energy’s primary use of energy commodity derivatives is to hedge against exposure to the prices of power, fuel for generation and natural gas for customers. Duke Energy also manages its exposure to basis risk through the use of congestion hedge products in RTOs such as financial transmission rights (PJM and MISO), which result in payments based on differentials in locational marginal prices. The majority of instruments used to manage Duke Energy’s commodity price exposure are either not designated as hedges or do not qualify for hedge accounting. These instruments are referred to as undesignated contracts. Mark-to-market changes for undesignated contracts entered into by regulated businesses are reflected as regulatory assets or liabilities on the Consolidated Balance Sheets. Duke Energy may also enter into other contracts that qualify for the NPNS exception. When a contract meets the criteria to qualify as NPNS, Duke Energy applies such exception. Income recognition and realization related to NPNS contracts generally coincide with the physical delivery of the commodity. For contracts qualifying for the NPNS exception, no recognition of the contract’s fair value in the Consolidated Financial Statements is required until settlement of the contract as long as the transaction remains probable of occurring. Commodity Price Risk Interest Rate Risk Price risk represents the potential risk of loss from adverse changes in the market price of electricity or other energy commodities. Duke Energy’s exposure to commodity price risk is influenced by a number of factors, including the effects of regulation, commodity contract size and length, market liquidity, market conditions, location and unique or specific contract terms. Duke Energy is exposed to the impact of market fluctuations in the prices of electricity, coal, natural gas and other energy-related products marketed and purchased as a result of its ownership of energy-related assets. Duke Energy’s exposure to these fluctuations through its regulated utility operations is limited since these operations are subject to cost-based regulation and are typically allowed to recover substantially all of these costs through various cost recovery clauses, including fuel clauses, formula-based contracts, or other cost-sharing mechanisms. While there may be a delay in timing between when these costs are incurred and when they are recovered through rates, changes from year to year generally do not have a material impact on operating results of these regulated operations. Duke Energy employs established policies and procedures to manage risks associated with these market fluctuations, which may include using various commodity derivatives, such as swaps, futures, forwards and options. For additional information, see Note 15 to the Consolidated Financial Statements, “Derivatives and Hedging.” Generation Portfolio Risks For the EU&I segment, the generation portfolio not utilized to serve retail operations or committed load is subject to commodity price fluctuations. However, the impact on the Consolidated Statements of Operations is limited due to mechanisms in these regulated jurisdictions that result in the sharing of most of the net profits from these activities with retail customers. Duke Energy is exposed to risk resulting from changes in interest rates as a result of its issuance or anticipated issuance of variable and fixed-rate debt and commercial paper. Duke Energy manages interest rate exposure by limiting variable-rate exposures to a percentage of total debt and by monitoring the effects of market changes in interest rates. Duke Energy also enters into financial derivative instruments, which may include instruments such as, but not limited to, interest rate swaps, swaptions and U.S. Treasury lock agreements to manage and mitigate interest rate risk exposure. See Notes 1, 7, 15 and 17 to the Consolidated Financial Statements, “Summary of Significant Accounting Policies,” “Debt and Credit Facilities,” “Derivatives and Hedging,” and “Fair Value Measurements.” Duke Energy had $9.2 billion of unhedged long- and short-term floating interest rate exposure at December 31, 2022. The impact of a 100-basis point change in interest rates on pretax income is approximately $92 million at December 31, 2022. This amount was estimated by considering the impact of the hypothetical interest rates on variable-rate securities outstanding, adjusted for interest rate hedges as of December 31, 2022. Foreign Currency Exchange Risk Duke Energy is exposed to risk resulting from changes in the foreign currency exchange rates as a result of its issuances of long-term debt denominated in a foreign currency. Duke Energy manages foreign currency exchange risk exposure by entering into cross-currency swaps, a type of financial derivative instrument, which mitigate foreign currency exchange exposure. See Notes 7, 15 and 17 to the Consolidated Financial Statements, “Debt and Credit Facilities,” “Derivatives and Hedging” and “Fair Value Measurements,” respectively. 49 PART IICredit Risk Credit risk represents the loss that the Duke Energy Registrants would incur if a counterparty fails to perform under its contractual obligations. Where exposed to credit risk, the Duke Energy Registrants analyze the counterparty’s financial condition prior to entering into an agreement and monitor exposure on an ongoing basis. The Duke Energy Registrants establish credit limits where appropriate in the context of contractual arrangements and monitor such limits. To reduce credit exposure, the Duke Energy Registrants seek to include netting provisions with counterparties, which permit the offset of receivables and payables with such counterparties. The Duke Energy Registrants also frequently use master agreements with credit support annexes to further mitigate certain credit exposures. The master agreements provide for a counterparty to post cash or letters of credit to the exposed party for exposure in excess of an established threshold. The threshold amount represents a negotiated unsecured credit limit for each party to the agreement, determined in accordance with the Duke Energy Registrants’ internal corporate credit practices and standards. Collateral agreements generally also provide that the failure to post collateral when required is sufficient cause to terminate transactions and liquidate all positions. The Duke Energy Registrants also obtain cash, letters of credit, or surety bonds from certain counterparties to provide credit support outside of collateral agreements, where appropriate, based on a financial analysis of the counterparty and the regulatory or contractual terms and conditions applicable to each transaction. See Note 15 to the Consolidated Financial Statements, “Derivatives and Hedging,” for additional information regarding credit risk related to derivative instruments. The Duke Energy Registrants’ principal counterparties for its electric and natural gas businesses are RTOs, distribution companies, municipalities, electric cooperatives and utilities located throughout the U.S. Exposure to these entities consists primarily of amounts due to Duke Energy Registrants for delivered electricity. Additionally, there may be potential risks associated with remarketing of energy and capacity in the event of default by wholesale power customers. The Duke Energy Registrants have concentrations of receivables from certain of such entities that may affect the Duke Energy Registrants’ credit risk. The Duke Energy Registrants are also subject to credit risk from transactions with their suppliers that involve prepayments or milestone payments in conjunction with outsourcing arrangements, major construction projects and certain commodity purchases. The Duke Energy Registrants’ credit exposure to such suppliers may take the form of increased costs or project delays in the event of nonperformance. The Duke Energy Registrants’ frequently require guarantees or letters of credit from suppliers to mitigate this credit risk. Credit risk associated with the Duke Energy Registrants’ service to residential, commercial and industrial customers is generally limited to outstanding accounts receivable. The Duke Energy Registrants mitigate this credit risk by requiring tariff customers to provide a cash deposit, letter of credit or surety bond until a satisfactory payment history is established, subject to the rules and regulations in effect in each retail jurisdiction at which time the deposit is typically refunded. Charge-offs for retail customers have historically been insignificant to the operations of the Duke Energy Registrants and are typically recovered through retail rates. Management continually monitors customer charge-offs, payment patterns and the impact of current economic conditions on customers’ ability to pay their outstanding balance to ensure the adequacy of bad debt reserves. In response to the COVID-19 pandemic that began in March 2020, the Duke Energy Registrants announced a suspension of disconnections for nonpayment to assist customers during the national emergency. While disconnections have resumed, the company continued to offer flexible options to customers struggling with the pandemic and the economic fallout, including extended payment arrangements to satisfy delinquent balances through June 2021. Since then, the company has resumed standard payment arrangement options. The Duke Energy Registrants are monitoring the effects of the resultant economic slowdown on counterparties’ abilities to perform under their contractual obligations. The Duke Energy Registrants experienced higher charge-offs during 2022, and higher utility account balances in arrears as of December 31, 2022. There is an expectation for the increase in charge-offs to continue in the near term. The Duke Energy Registrants have reserved for these estimated losses in the allowance for doubtful account balance. See Notes 4 and 19 to the Consolidated Financial Statements, “Regulatory Matters” and “Revenue,” respectively, for more information. Duke Energy Ohio and Duke Energy Indiana sell certain of their accounts receivable and related collections through CRC, a Duke Energy consolidated VIE. Losses on collection are first absorbed by the equity of CRC and next by the subordinated retained interests held by Duke Energy Ohio, Duke Energy Kentucky and Duke Energy Indiana. See Note 18 to the Consolidated Financial Statements, “Variable Interest Entities.” The Duke Energy Registrants provide certain non-tariff services, primarily to large commercial and industrial customers in which incurred costs, including invested capital, are intended to be recovered from the individual customer and therefore are not subject to rate recovery in the event of customer default. Customer creditworthiness is assessed prior to entering into these transactions. Credit concentration related to these transactions exists for certain of these customers. Duke Energy Carolinas has third-party insurance to cover certain losses related to asbestos-related injuries and damages above an aggregate self-insured retention. See Note 5 to the Consolidated Financial Statements, “Commitments and Contingencies” for information on asbestos-related injuries and damages claims. The Duke Energy Registrants also have credit risk exposure through issuance of performance and financial guarantees, letters of credit and surety bonds on behalf of less than wholly owned entities and third parties. Where the Duke Energy Registrants have issued these guarantees, it is possible that they could be required to perform under these guarantee obligations in the event the obligor under the guarantee fails to perform. Where the Duke Energy Registrants have issued guarantees related to assets or operations that have been disposed of via sale, they attempt to secure indemnification from the buyer against all future performance obligations under the guarantees. See Note 8 to the Consolidated Financial Statements, “Guarantees and Indemnifications,” for further information on guarantees issued by the Duke Energy Registrants. Duke Energy is subject to credit risk from transactions with counterparties to cross-currency swaps related to future interest and principal payments. The credit exposure to such counterparties may take the form of higher costs to meet Duke Energy’s future euro-denominated interest and principal payments in the event of counterparty default. Duke Energy selects highly rated banks as counterparties and allocates the hedge for each debt issuance across multiple counterparties. The master agreements with the counterparties impose collateral requirements on the parties in certain circumstances indicative of material deterioration in a party’s creditworthiness. Based on the Duke Energy Registrants’ policies for managing credit risk, their exposures and their credit and other reserves, the Duke Energy Registrants do not currently anticipate a materially adverse effect on their consolidated financial position or results of operations as a result of nonperformance by any counterparty. Marketable Securities Price Risk As described further in Note 16 to the Consolidated Financial Statements, “Investments in Debt and Equity Securities,” Duke Energy invests in debt and equity securities as part of various investment portfolios to fund certain obligations. The vast majority of investments in equity securities are within the NDTF and assets of the various pension and other post-retirement benefit plans. Pension Plan Assets Duke Energy maintains investments to facilitate funding the costs of providing non-contributory defined benefit retirement and other post-retirement benefit plans. These investments are exposed to price fluctuations in equity markets and changes in interest rates. The equity securities held in these 50 PART IIpension plans are diversified to achieve broad market participation and reduce the impact of any single investment, sector or geographic region. Duke Energy has established asset allocation targets for its pension plan holdings, which take into consideration the investment objectives and the risk profile with respect to the trust in which the assets are held. See Note 23 to the Consolidated Financial Statements, “Employee Benefit Plans,” for additional information regarding investment strategy of pension plan assets. A significant decline in the value of plan asset holdings could require Duke Energy to increase funding of its pension plans in future periods, which could adversely affect cash flows in those periods. Additionally, a decline in the fair value of plan assets, absent additional cash contributions to the plan, could increase the amount of pension cost required to be recorded in future periods, which could adversely affect Duke Energy’s results of operations in those periods. Nuclear Decommissioning Trust Funds As required by the NRC, NCUC, PSCSC and FPSC, subsidiaries of Duke Energy maintain trust funds to fund the costs of nuclear decommissioning. As of December 31, 2022, these funds were invested primarily in domestic and international equity securities, debt securities, cash and cash equivalents and short-term investments. Per the NRC, Internal Revenue Code, NCUC, PSCSC and FPSC requirements, these funds may be used only for activities related to nuclear decommissioning. These investments are exposed to price fluctuations in equity markets and changes in interest rates. Duke Energy actively monitors its portfolios by benchmarking the performance of its investments against certain indices and by maintaining, and periodically reviewing, target allocation percentages for various asset classes. Accounting for nuclear decommissioning recognizes that costs are recovered through retail and wholesale rates; therefore, fluctuations in investment prices do not materially affect the Consolidated Statements of Operations, as changes in the fair value of these investments are primarily deferred as regulatory assets or regulatory liabilities pursuant to Orders by the NCUC, PSCSC, FPSC and FERC. Earnings or losses of the funds will ultimately impact the amount of costs recovered through retail and wholesale rates. See Note 10 to the Consolidated Financial Statements, “Asset Retirement Obligations,” for additional information regarding nuclear decommissioning costs. See Note 16 to the Consolidated Financial Statements, “Investments in Debt and Equity Securities,” for additional information regarding NDTF assets. 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. The following sections outline various proposed and recently enacted legislation and regulations that may impact the Duke Energy Registrants. Refer to Note 4 to the Consolidated Financial Statements, “Regulatory Matters,” for further information regarding potential plant retirements and regulatory filings related to the Duke Energy Registrants. Coal Combustion Residuals In April 2015, EPA published a rule to regulate the disposal of CCR from electric utilities as solid waste. The federal regulation classifies CCR as nonhazardous waste and allows for beneficial use of CCR with some restrictions. The regulation applies to all new and existing landfills, new and existing surface impoundments receiving CCR and existing surface impoundments located at stations generating electricity (regardless of fuel source), which were no longer receiving CCR but contained liquids as of the effective date of the rule. The rule establishes requirements regarding landfill design, structural integrity design and assessment criteria for surface impoundments, groundwater monitoring, protection and remedial procedures and other operational and reporting procedures to ensure the safe disposal and management of CCR. In addition to the requirements of the federal CCR rule, CCR landfills and surface impoundments will continue to be regulated by the states. Cost recovery for future expenditures will be pursued through the normal ratemaking process with federal and state utility commissions and via wholesale contracts, which permit recovery of necessary and prudently incurred costs associated with Duke Energy’s regulated operations. For more information, see Notes 4 and 10 to the Consolidated Financial Statements, “Regulatory Matters” and “Asset Retirement Obligations,” respectively. Coal Ash Act AROs recorded on the Duke Energy Carolinas and Duke Energy Progress Consolidated Balance Sheets at December 31, 2022, and December 31, 2021, include the legal obligation for closure of coal ash basins and the disposal of related ash as a result of the Coal Ash Act, the EPA CCR rule and other 51 agreements. The Coal Ash Act includes a variance procedure for compliance deadlines and other issues surrounding the management of CCR and CCR surface impoundments and prohibits cost recovery in customer rates for unlawful discharge of ash impoundment waters occurring after January 1, 2014. The Coal Ash Act leaves the decision on cost recovery determinations related to closure of ash impoundments to the normal ratemaking processes before utility regulatory commissions. Consistent with the requirements of the Coal Ash Act, Duke Energy previously submitted comprehensive site assessments and groundwater corrective action plans to NCDEQ. On December 31, 2019, Duke Energy submitted updated groundwater corrective action plans for six sites in North Carolina and site-specific coal ash impoundment closure plans for all 14 North Carolina sites to NCDEQ. In addition, from 2020 through 2022, Duke Energy submitted updated comprehensive site assessments and groundwater corrective action plans for the remaining North Carolina sites, except for Buck Steam Station, which Duke Energy expects to submit in June 2023. On April 1, 2019, NCDEQ issued a closure determination requiring Duke Energy Carolinas and Duke Energy Progress to excavate all remaining coal ash impoundments at the Allen, Belews Creek, Rogers, Marshall, Mayo and Roxboro facilities in North Carolina. On April 26, 2019, Duke Energy Carolinas and Duke Energy Progress filed Petitions for Contested Case Hearings in the Office of Administrative Hearings to challenge NCDEQ’s April 1 Order. On December 31, 2019, Duke Energy Carolinas and Duke Energy Progress entered into a settlement agreement with NCDEQ and certain community groups under which Duke Energy Carolinas and Duke Energy Progress agreed to excavate seven of the nine remaining coal ash basins at these sites with ash moved to on-site lined landfills, including two at Allen, one at Belews Creek, one at Mayo, one at Roxboro, and two at Rogers. At the two remaining basins at Marshall and Roxboro, uncapped basin ash will be excavated and moved to lined landfills. Those portions of the basins at Marshall and Roxboro, which were previously filled with ash and on which permitted facilities were constructed, will not be disturbed and will be closed pursuant to other state regulations. Following NCDEQ’s April 1 Order, Duke Energy estimated the incremental undiscounted cost to close the nine remaining impoundments by excavation would be approximately $4 billion to $5 billion, potentially increasing the total estimated costs to permanently close all ash basins in North Carolina and South Carolina to $9.5 billion to $10.5 billion. The settlement lowered the estimated total undiscounted cost to close the nine remaining basins by excavation by approximately $1.5 billion as compared to Duke Energy’s original estimate that followed the order. As a result, the estimated total cost to permanently PART IIclose all ash basins in North Carolina and South Carolina was estimated to be approximately $8 billion to $9 billion, of which approximately $3.5 billion has been spent through 2022. The majority of the remaining spend is expected to occur over the next 10 to 15 years. Duke Energy has completed excavation of all coal ash at the Riverbend, agencies, including the EPA, that they would impose additional regulations on CO2 and methane emissions to which Duke Energy will be subject. The Duke Energy Registrants are monitoring these matters and cannot predict the outcome, however, there could be a material impact on our clean energy transition. Dan River, Asheville and Sutton plants. For further information on ash basins and recovery, see Notes 4 and 10 to the Consolidated Financial Statements, “Regulatory Matters” and “Asset Retirement Obligations,” respectively. North Carolina House Bill 951 On October 13, 2021, North Carolina House Bill 951 (HB 951) was signed into law (the “Legislation”). This Legislation establishes a framework overseen by the NCUC to advance state CO2 emission reductions from electric generating facilities in the state through the use of least cost planning while providing for continued reliability and affordable rates for customers served by such generation. It also authorizes the use of performance-based regulation in North Carolina. Among other things, the Legislation requires the NCUC to: • develop an initial carbon plan that would target a 70% reduction in CO2 emissions from public utilities’ electric generation in the state by 2030 and carbon neutrality by 2050, considering all resource options and the latest technology; • adopt rules to implement the requirements of the Legislation authorizing PBR that includes MYRP with a maximum three-year term, performance incentive mechanisms to track utility performance, and revenue decoupling for the residential customer class; • establish rules to securitize costs associated with the early retirement of subcritical coal-fired electric generating facilities necessary to achieve the authorized carbon reduction goals at 50% of remaining net book value, with the remaining net book value recovered through normal cost-of-service basis; and • initiate a process for updating rates and terms of certain existing solar power purchase agreements executed under PURPA. In October 2022 and January 2023, Duke Energy Progress and Duke Energy Carolinas, respectively, filed applications with the NCUC, which proposed implementation of the Legislation’s provisions around PBR, including MYRP, residential decoupling and performance incentive mechanisms. Additionally, on December 30, 2022, the NCUC issued an order adopting the first Carbon Plan as directed by the Legislation. See Note 4, “Regulatory Matters” to the Consolidated Financial Statements for more information. Other Environmental Regulations The Duke Energy Registrants are also subject to various federal, state and local laws regarding air and water quality, hazardous and solid waste disposal and other environmental matters. Duke Energy continues to comply with enacted environmental statutes and regulations even as certain of these regulations are in various stages of clarification, revision or legal challenge. The Duke Energy Registrants cannot predict the outcome of these matters. Global Climate Change and Regulation of GHG Emissions In 2021, President Biden recommitted the United States to the Paris Agreement and announced a new target for the United States of 50% to 52% reduction in economywide net GHG emissions from 2005 levels by 2030. The U.S. submittal to support this Paris target includes a goal for 100% carbon-free electricity by 2035. These actions have been supplemented by a number of executive orders by President Biden and an indication by a number of regulatory CO2 Emissions Reductions The Duke Energy Registrants’ direct GHG emissions consist primarily of CO2 that results primarily from operating a fleet of coal-fired and natural gas-fired power plants to serve its customers reliably and affordably. In 2019, Duke Energy announced an updated climate strategy with new goals of at least 50% reduction in carbon emissions from 2005 levels from electric generation by 2030 and net-zero carbon emissions from electric generation by 2050. In February 2022, we added Scope 2 and certain Scope 3 emissions, including emissions from upstream purchased power and fossil fuel purchases, as well as downstream customer use of natural gas, to our 2050 net-zero goal. In October 2022, we announced an additional interim target to reduce carbon emissions from electric generation by 80% from 2005 levels by 2040. Duke Energy also adopted an interim goal of reducing Scope 2 and Scope 3 emissions mentioned above by 50% below 2021 levels by 2035. The Duke Energy Registrants have taken actions that have resulted in a reduction of CO2 emissions over time. Between 2005 and 2022, the Duke Energy Registrants have collectively lowered the CO2 emissions from their electricity generation by 44%. Timelines and initiatives, as well as implementation of new technologies, for future reductions of GHG emissions will vary in each state in which the company operates and will involve collaboration with regulators, customers and other stakeholders. The goals announced in 2019, and updated in 2022, as well as the actions taken to reduce CO2 emissions, potentially lower the exposure to any future mandatory CO2 emission reduction requirements, whether as a result of federal legislation, EPA regulation, state regulation or other as yet unknown emission reduction requirement. Actions to reduce CO2 emissions have included the retirement of 56 coal-fired electric generating units with a combined generating capacity of 7,500 MW, while investing in renewables and state-of-the-art highly efficient natural gas-fired generation that produces far fewer CO2 emissions per unit of electricity generated than coal. Duke Energy also has made investments to increase EE offerings and ensure continued operations of its zero-CO2 emissions hydropower and nuclear plants. These efforts have diversified its system and significantly reduced CO2 emissions. Duke Energy will continue to explore the use of currently available and commercially demonstrated technology to reduce CO2 emissions, including EE, wind, solar and storage, as well as evolving technologies like carbon capture, utilization and storage, the use of hydrogen and other low-carbon fuels, long-duration storage and advanced nuclear, in its efforts to achieve its net-zero goal as well as to comply with any future regulations. Duke Energy plans to adjust to and incorporate evolving and innovative technologies in a way that balances the reliability and affordability while meeting regulatory requirements and customer demands. Under any future scenario involving mandatory CO2 limitations, the Duke Energy Registrants would plan to seek recovery of their compliance costs through appropriate regulatory mechanisms. Future levels of GHG emissions by the Duke Energy Registrants will be influenced by variables that include capacity needs in the jurisdictions in which they operate, public policy, tax incentives, economic conditions that affect electricity demand, fuel prices, market prices, availability of resources and labor, compliance with new or existing regulations, the ability to make enhancements to transmission and distribution systems to support increased renewables, and the existence of new technologies that can be deployed to generate the electricity necessary to meet customer demand. Currently, the Duke Energy Registrants do not purchase carbon credits or offsets for use in connection with the company’s net-zero emissions goals. Though they may purchase carbon credits or offsets for such uses in the future, the amount or cost of which is not expected to be material at this time. 52 PART IIGeneration Mix Planning Process The Duke Energy Registrants annually, biennially or triennially prepare lengthy, forward-looking IRPs. These detailed, highly technical plans are based on the company’s thorough analysis of numerous factors that can impact the cost of producing and delivering electricity that influence long-term generation resource planning decisions. The IRP process helps to evaluate a range of options, taking into account stakeholder input as well as forecasts of future electricity demand, fuel prices, transmission improvements, new generating capacity, integration of renewables, energy storage, EE and demand response initiatives. The IRP process also helps evaluate potential environmental and regulatory scenarios to better mitigate policy and economic risks. The IRPs we file with regulators look out 10 to 20 years depending on the jurisdiction. For a number of years, the Duke Energy Registrants have included a price on CO2 emissions in their IRP planning process to account for the potential regulation of CO2 emissions. Incorporating a price on CO2 emissions in the IRPs allows for the evaluation of existing and future resource needs against potential climate change policy risk in the absence of policy certainty. One of the challenges with using a CO2 price, especially in the absence of a clear and certain policy, is determining the appropriate price to use. To address this uncertainty and ensure the company remains agile, the Duke Energy Registrants typically use a range of potential CO2 prices to reflect a range of potential policy outcomes. In September 2020, Duke Energy Carolinas and Duke Energy Progress filed their IRPs in North Carolina and South Carolina, and, in December 2021, Duke Energy Indiana filed its IRP, outlining an accelerated energy transition, which aligns with the company’s 2030 CO2 emissions goal. In December 2021, the PSCSC rejected Duke Energy Carolinas and Duke Energy Progress’ preferred accelerated coal retirements IRP scenario and instead found that the base case without a price on CO2 emissions was the most reasonable IRP scenario. In 2021, the state of North Carolina passed HB 951, which among other things, directs the NCUC to develop and approve a carbon reduction plan by the end of 2022 that would target a 70% reduction in CO2 emissions from Duke Energy Progress’ and Duke Energy Carolinas’ electric generation in the state by 2030 and carbon neutrality by 2050, considering all resource options and the latest technology. In light of this legislation, in November 2021, the NCUC declined to make a determination on the portfolios presented in the 2020 IRP noting that the legislation may impact the schedule for coal plant retirements and new resources and limited its order to short-term actions for use on an interim basis pending preparation of the carbon plan. The NCUC approved its initial carbon reduction plan in December 2022, which considered feedback from extensive stakeholder engagement and was informed by Duke Energy’s initial proposed carbon plan, filed with the NCUC on May 16, 2022, and built on the IRPs that were filed in 2020 by Duke Energy Carolinas and Duke Energy Progress. CO2 and Methane Emissions Reductions from the Natural Gas Distribution Business In addition to CO2 emissions resulting primarily from our operations of coal-fired and natural gas-fired power plants, the Duke Energy Registrants are also responsible for certain methane emissions from the distribution of natural gas to customers. In October 2020, Duke Energy announced a new goal to achieve net-zero methane emissions from its natural gas distribution business by 2030. The Duke Energy Registrants have taken actions that have resulted in methane emission reductions, including the replacement of cast iron and bare steel pipelines and associated services with plastic or coated steel, advanced methane leak detection efforts, reducing time to repair nonhazardous leaks and operational releases of methane, and investment in renewable natural gas. Timelines and initiatives, as well as implementation of new technologies, for future reductions of upstream methane emissions will vary in each state in which the company’s natural gas distribution business operates and will involve collaboration with regulators, customers and other stakeholders. EPA has also proposed regulations that would require reduction of methane emissions upstream of the Duke Energy Registrants’ natural gas distribution business. The impact of these regulations on natural gas fuel prices is not currently quantifiable. In addition to possible EPA regulation of methane emissions, certain local governments, none within the jurisdictions in which the Duke Energy Registrants operate, have enacted or are considering initiatives to eliminate natural gas use in new buildings and focus on electrification. Enactment of similar regulations in the areas in which the Duke Energy Registrants’ natural gas distribution operates could have a significant impact on the natural gas distribution business and its operations. At this time, such impacts are not able to be quantified; however, the net-zero methane goals announced in 2020 for the natural gas distribution business, as well as the actions taken to reduce these GHG emissions, potentially lowers the exposure to any future mandatory GHG emission reduction requirements. The Duke Energy Registrants would plan to seek recovery of their compliance costs with any new regulations through the regulatory process. Physical Impacts of Climate Change The Duke Energy Registrants recognize that scientists associate severe weather events with increasing levels of GHGs in the atmosphere. It is possible that these weather events could have a material impact on future results of operations should they occur more frequently and with greater severity. However, the uncertain nature of potential changes in extreme weather events (such as increased frequency, duration and severity), the long period of time over which any potential changes might take place and the inability to predict potential changes with any degree of accuracy, make estimating with any certainty any potential future financial risk to the Duke Energy Registrants’ operations difficult. Additionally, the Duke Energy Registrants would plan to continue to seek recovery of storm costs through the appropriate regulatory mechanisms. For more information on storm securitization in North Carolina and storm cost recovery in Florida, see Note 4 to the Consolidated Financial Statements, “Regulatory Matters.” The Duke Energy Registrants routinely take steps to reduce the potential impact of severe weather events on their electric transmission and distribution systems and natural gas facilities. The steps include modernizing the electric grid through smart meters, storm hardening, self-healing systems and targeted undergrounding and applying lessons learned from previous storms to restoration efforts. The Duke Energy Registrants’ electric generating facilities and natural gas facilities are designed to withstand extreme weather events without significant damage. The Duke Energy Registrants maintain inventories of coal, oil and liquified natural gas to mitigate the effects of any potential short- term disruption in fuel supply so they can continue to provide customers with an uninterrupted supply of electricity and/or natural gas. New Accounting Standards See Note 1 to the Consolidated Financial Statements, “Summary of Significant Accounting Policies,” for a discussion of the impact of new accounting standards. ITEM 7A. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK See “Management’s Discussion and Analysis of Results of Operations and Financial Condition – Quantitative and Qualitative Disclosures About Market Risk.” 53 PART IIITEM 8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA Duke Energy Report of Independent Registered Public Accounting Firm .......................................... Consolidated Statements of Operations ..................................................................... Consolidated Statements of Comprehensive Income .................................................. Consolidated Balance Sheets ..................................................................................... Consolidated Statements of Cash Flows .................................................................... Consolidated Statements of Changes in Equity........................................................... Duke Energy Carolinas Report of Independent Registered Public Accounting Firm .......................................... Consolidated Statements of Operations and Comprehensive Income .......................... Consolidated Balance Sheets ..................................................................................... Consolidated Statements of Cash Flows .................................................................... Consolidated Statements of Changes in Equity........................................................... Progress Energy Report of Independent Registered Public Accounting Firm .......................................... Consolidated Statements of Operations and Comprehensive Income .......................... Consolidated Balance Sheets ..................................................................................... Consolidated Statements of Cash Flows .................................................................... Consolidated Statements of Changes in Equity........................................................... Duke Energy Progress Report of Independent Registered Public Accounting Firm .......................................... Consolidated Statements of Operations and Comprehensive Income .......................... Consolidated Balance Sheets ..................................................................................... Consolidated Statements of Cash Flows .................................................................... Consolidated Statements of Changes in Equity........................................................... Duke Energy Florida Report of Independent Registered Public Accounting Firm .......................................... Consolidated Statements of Operations and Comprehensive Income .......................... Consolidated Balance Sheets ..................................................................................... Consolidated Statements of Cash Flows .................................................................... Consolidated Statements of Changes in Equity........................................................... Duke Energy Ohio Report of Independent Registered Public Accounting Firm .......................................... Consolidated Statements of Operations and Comprehensive Income .......................... Consolidated Balance Sheets ..................................................................................... Consolidated Statements of Cash Flows .................................................................... Consolidated Statements of Changes in Equity........................................................... 55 57 58 59 61 63 64 66 67 68 69 70 72 73 74 75 76 78 79 80 81 82 84 85 86 87 88 90 91 92 93 Duke Energy Indiana Report of Independent Registered Public Accounting Firm .......................................... Consolidated Statements of Operations and Comprehensive Income .......................... Consolidated Balance Sheets ..................................................................................... Consolidated Statements of Cash Flows .................................................................... Consolidated Statements of Changes in Equity........................................................... Piedmont Report of Independent Registered Public Accounting Firm .......................................... Consolidated Statements of Operations and Comprehensive Income .......................... Consolidated Balance Sheets ..................................................................................... Consolidated Statements of Cash Flows .................................................................... Consolidated Statements of Changes in Equity........................................................... Combined Notes to Consolidated Financial Statements Note 1 – Summary of Significant Accounting Policies ................................................. Note 2 – Dispositions ................................................................................................ Note 3 – Business Segments ..................................................................................... Note 4 – Regulatory Matters ...................................................................................... Note 5 – Commitments and Contingencies ................................................................ Note 6 – Leases ........................................................................................................ Note 7 – Debt and Credit Facilities ............................................................................ Note 8 – Guarantees and Indemnifications ................................................................ Note 9 – Joint Ownership of Generating and Transmission Facilities........................... Note 10 – Asset Retirement Obligations ..................................................................... Note 11 – Property, Plant and Equipment .................................................................. Note 12 – Goodwill and Intangible Assets .................................................................. Note 13 – Investments in Unconsolidated Affiliates ................................................... Note 14 – Related Party Transactions ........................................................................ Note 15 – Derivatives and Hedging ............................................................................ Note 16 – Investments in Debt and Equity Securities ................................................. Note 17 – Fair Value Measurements .......................................................................... Note 18 – Variable Interest Entities ............................................................................ Note 19 – Revenue .................................................................................................... Note 20 – Stockholders' Equity .................................................................................. Note 21 – Severance ................................................................................................. Note 22 – Stock-Based Compensation....................................................................... Note 23 – Employee Benefit Plans ............................................................................. Note 24 – Income Taxes............................................................................................. Note 25 – Other Income and Expenses, Net ............................................................... Note 26 – Subsequent Events .................................................................................... Note 27 – Quarterly Financial Data (Unaudited)......................................................... 94 96 97 98 99 100 102 103 104 105 106 113 116 120 136 141 145 151 152 152 155 157 158 159 160 165 169 175 178 183 184 186 187 198 205 206 206 54 PART IIREPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM To the shareholders and the Board of Directors of Duke Energy Corporation Opinion on the Financial Statements We have audited the accompanying consolidated balance sheets of Duke Energy Corporation and subsidiaries (the “Company”) as of December 31, 2022, and 2021, the related consolidated statements of operations, comprehensive income, changes in equity, and cash flows, for each of the three years in the period ended December 31, 2022, and the related notes (collectively referred to as the “financial statements”). In our opinion, the financial statements present fairly, in all material respects, the financial position of the Company as of December 31, 2022, and 2021, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 2022, in conformity with accounting principles generally accepted in the United States of America. We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the Company’s internal control over financial reporting as of December 31, 2022, based on criteria established in Internal Control — Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission and our report dated February 27, 2023, expressed an unqualified opinion on the Company’s internal control over financial reporting. Basis for Opinion These financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion on the Company’s financial statements based on our audits. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB. We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our opinion. Critical Audit Matters The critical audit matters communicated below are matters arising from the current-period audit of the financial statements that were communicated or required to be communicated to the audit committee and that (1) relate to accounts or disclosures that are material to the financial statements and (2) involved our especially challenging, subjective, or complex judgments. The communication of critical audit matters does not alter in any way our opinion on the financial statements, taken as a whole, and we are not, by communicating the critical audit matters below, providing a separate opinion on the critical audit matters or on the accounts or disclosures to which they relate. Dispositions – Assessment of Held for Sale and Discontinued Operations Classification and Impairment Charge – Refer to Note 2 to the financial statements. Critical Audit Matter Description In November 2022, Duke Energy committed to a plan to sell the Commercial Renewables business segment, excluding the offshore wind contract for Carolina Long Bay (“Commercial Renewables business segment”). As a result, the Commercial Renewables business segment was classified as held for sale and reported as discontinued operations and pretax impairment charges of approximately $1.7 billion were recorded to reduce the carrying amount of the assets to their estimated fair value, based on the expected selling price less cost to sell. We identified the assessment of held for sale and discontinued operations classification and associated impairment charges as a critical audit matter because of the extensive effort required to audit the subjective and complex judgments associated with those matters, including: • The assessment of whether the sale is probable and the transfer of assets will be completed within one year from period-end; • The assessment of whether the sale of the segment represents a discontinued operation; • The determination of the impairment charges; and • The assessment of the fair value of the Commercial Renewables business segment. How the Critical Audit Matter Was Addressed in the Audit Our audit procedures related to the classification of the Commercial Renewables business segment as held for sale and the associated impairment charges included the following, among others: • We tested the effectiveness of management’s controls over (1) the evaluation and disclosure of the held for sale and discontinued operations classification and (2) the determination of the impairment charges, including controls over the reasonableness of the inputs and assumptions used in management’s estimates. 55 PART II• We evaluated management’s assessment of held for sale and discontinued operations classification as follows: ◦ Inquired of executive officers, key members of management and members of the Board of Directors to obtain an understanding of plans to sell the Commercial Renewables business segment. ◦ Assessed management’s judgments in determining whether the Commercial Renewables business segment meets the held for sale and discontinued operations classification criteria through procedures performed, including, but not limited to, reviewing minutes from meetings of the Board of Directors, reviewing communications regarding the progression of the selling process, and assessing the Commercial Renewables business segment relative to the Company’s operations and financial results. ◦ Compared management’s conclusions against relevant guidance and tested the completeness and accuracy of information used in the Company’s evaluation. • We evaluated the reasonableness of the determination of the fair value of the long-lived assets by using an internal fair value specialist to assess the reasonableness of the overall methodology and discount rates. Additionally, we evaluated the mathematical accuracy of the underlying calculations. Further, we tested forecasted information used to determine fair value. • We evaluated the accuracy and completeness of the Company’s reclassification of balances and activity and related disclosures. • We obtained representation from management asserting to the appropriate presentation, measurement and timing of the Commercial Renewables business segment. Regulatory Matters – Impact of Rate Regulation on the Financial Statements – Refer to Notes 1, 4 and 10 to the financial statements. Critical Audit Matter Description The Company is subject to regulation by federal and state utility regulatory agencies (the “Commissions”), which have jurisdiction with respect to the rates of the Company’s electric and natural gas distribution companies. Management has determined it meets the criteria for the application of regulated operations accounting in preparing its financial statements under accounting principles generally accepted in the United States of America. Significant judgment can be required to determine if otherwise recognizable incurred costs qualify to be presented as a regulatory asset and deferred because such costs are probable of future recovery in customer rates. As discussed in Note 4, regulatory proceedings in recent years have focused on the recoverability of storm costs, fuel costs, and asset retirement obligations specific to coal ash. As a result, assessing the potential outcomes of future regulatory orders requires significant management judgment. As of December 31, 2022, the Company has approximately $18.1 billion of recorded regulatory assets. We identified the impact of rate regulation related to regulatory assets as a critical audit matter due to the significant judgments made by management, including assumptions regarding the outcome of future decisions by the Commissions; to support its assertions on the likelihood of future recovery for deferred costs. Given that management’s accounting judgments are based on assumptions about the outcome of future decisions by the Commissions, auditing these judgments required specialized knowledge of accounting for rate regulation and the ratemaking process due to its inherent complexities as it relates to regulatory assets. How the Critical Audit Matters Were Addressed in the Audit Our audit procedures related to the recovery of regulatory assets included the following, among others: • We tested the effectiveness of management’s controls over the evaluation of the likelihood of the recovery in future rates and the monitoring and evaluation of regulatory developments that may affect the likelihood of recovering costs in future rates. • We evaluated the Company’s disclosures related to the impacts of rate regulation including the balances recorded and regulatory developments. • We read relevant regulatory orders issued by the Commissions, regulatory statutes, interpretations, procedural memorandums, filings made by interveners, and other publicly available information to assess the likelihood of recovery in future rates based on precedents of the Commissions’ treatment of similar costs under similar circumstances. We also evaluated the external information and compared it to management’s recorded balances for completeness. • For regulatory matters in process, we inspected the Company’s and intervenors’ filings with the Commissions, that may impact the Company’s future rates, for any evidence that might contradict management’s assertions. • We evaluated the reasonableness of management’s judgments regarding the recoverability of regulatory asset balances by performing the following: ◦ We inquired of management regarding changes in regulatory orders and regulatory asset balances during the year. ◦ We evaluated the reasonableness of such changes based on our knowledge of commission-approved amortization, expected incurred costs, and recently approved regulatory orders, as applicable. ◦ We utilized trend analyses to evaluate the historical consistency of regulatory asset balances. ◦ We compared the recorded regulatory asset balance to an independently developed expectation of the corresponding balance. • We obtained an analysis from management and letters from internal legal counsel for asset retirement obligations specific to coal ash costs, regarding probability of recovery for deferred costs not yet addressed in a regulatory order to assess management’s assertion that amounts are probable of recovery. • We obtained representation from management asserting that regulatory assets recorded in the financial statements are probable of recovery. /s/ Deloitte & Touche LLP Charlotte, North Carolina February 27, 2023 We have served as the Company’s auditor since 1947. 56 PART IIDUKE ENERGY CORPORATION CONSOLIDATED STATEMENTS OF OPERATIONS (in millions, except per share amounts) Operating Revenues Regulated electric Regulated natural gas Nonregulated electric and other Total operating revenues Operating Expenses Fuel used in electric generation and purchased power Cost of natural gas Operation, maintenance and other Depreciation and amortization Property and other taxes Impairment of assets and other charges Total operating expenses Gains on Sales of Other Assets and Other, net Operating Income Other Income and Expenses Equity in earnings (losses) of unconsolidated affiliates Other income and expenses, net Total other income and expenses Interest Expense Income From Continuing Operations Before Income Taxes Income Tax Expense (Benefit) From Continuing Operations Income From Continuing Operations Loss From Discontinued Operations, net of tax Net Income Add: Net Loss Attributable to Noncontrolling Interests Net Income Attributable to Duke Energy Corporation Less: Preferred Dividends Years Ended December 31, 2022 2021 2020 $ 25,759 2,724 285 $ 22,319 2,008 294 $ 21,461 1,642 263 28,768 24,621 23,366 8,782 1,276 5,734 5,086 1,466 434 6,255 705 5,703 4,762 1,355 353 6,051 460 5,502 4,504 1,311 978 22,778 19,133 18,806 22 6,012 113 392 505 2,439 4,078 300 3,778 (1,323) 2,455 95 2,550 106 12 5,500 62 636 698 2,207 3,991 268 3,723 (144) 3,579 329 3,908 106 11 4,571 (2,005) 451 (1,554) 2,097 920 (169) 1,089 (7) 1,082 295 1,377 107 Net Income Available to Duke Energy Corporation Common Stockholders $ 2,444 $ 3,802 $ 1,270 Earnings Per Share – Basic and Diluted Income from continuing operations available to Duke Energy Corporation common stockholders Basic and Diluted (Loss) Income from discontinued operations attributable to Duke Energy Corporation common stockholders Basic and Diluted Net income available to Duke Energy Corporation common stockholders Basic and Diluted Weighted average shares outstanding Basic Diluted See Notes to Consolidated Financial Statements $ 4.74 $ (1.57) $ 3.17 $ $ $ 770 770 4.68 0.26 4.94 769 769 $ $ $ 1.33 0.39 1.72 737 738 57 PART IIDUKE ENERGY CORPORATION CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (in millions) Net Income Other Comprehensive Income (Loss), net of tax(a) Pension and OPEB adjustments Net unrealized gains (losses) on cash flow hedges Reclassification into earnings from cash flow hedges Net unrealized losses on fair value hedges Unrealized (losses) gains on available-for-sale securities Other Comprehensive Income (Loss), net of tax Comprehensive Income Add: Comprehensive Loss Attributable to Noncontrolling Interests Comprehensive Income Attributable to Duke Energy Corporation Less: Preferred Dividends Years Ended December 31, 2022 2021 2020 $2,455 $3,579 $1,082 (19) 285 (38) (33) (21) 174 2,629 84 2,713 106 7 (68) 13 — (8) (56) 3,523 319 3,842 106 6 (138) 11 — 3 (118) 964 306 1,270 107 Comprehensive Income Available to Duke Energy Corporation Common Stockholders $2,607 $3,736 $1,163 (a) Net of income tax expense of approximately $52 million for the year ended December 31, 2022, and income tax benefit of approximately $17 million and $35 million for the years ended December 31, 2021, and 2020, respectively. See Notes to Consolidated Financial Statements 58 PART IIDUKE ENERGY CORPORATION CONSOLIDATED BALANCE SHEETS (in millions) ASSETS Current Assets Cash and cash equivalents Receivables (net of allowance for doubtful accounts of $40 at 2022 and $45 at 2021) Receivables of VIEs (net of allowance for doubtful accounts of $176 at 2022 and $76 at 2021) Inventory Regulatory assets (includes $106 at 2022 and $105 at 2021 related to VIEs) Assets held for sale Other (includes $116 at 2022 and $41 at 2021 related to VIEs) Total current assets Property, Plant and Equipment Cost Accumulated depreciation and amortization Facilities to be retired, net Net property, plant and equipment Other Noncurrent Assets Goodwill Regulatory assets (includes $1,715 at 2022 and $1,824 at 2021 related to VIEs) Nuclear decommissioning trust funds Operating lease right-of-use assets, net Investments in equity method unconsolidated affiliates Assets held for sale Other (includes $52 at 2022 and $30 at 2021 related to VIEs) Total other noncurrent assets Total Assets See Notes to Consolidated Financial Statements December 31, 2022 2021 $ 409 1,309 3,106 3,584 3,485 262 1,067 13,222 $ 341 1,085 2,437 3,111 2,150 232 584 9,940 163,839 (52,100) 9 154,496 (49,104) 144 111,748 105,536 19,303 14,645 8,637 1,042 455 5,634 3,400 53,116 19,303 12,487 10,401 1,136 457 6,695 3,632 54,111 $178,086 $ 169,587 59 PART IIDUKE ENERGY CORPORATION CONSOLIDATED BALANCE SHEETS – (Continued) (in millions) LIABILITIES AND EQUITY Current Liabilities Accounts payable Notes payable and commercial paper Taxes accrued Interest accrued Current maturities of long-term debt (includes $350 at 2022 and $76 at 2021 related to VIEs) Asset retirement obligations Regulatory liabilities Liabilities associated with assets held for sale Other Total current liabilities Long-Term Debt (includes $3,108 at 2022 and $3,379 at 2021 related to VIEs) Other Noncurrent Liabilities Deferred income taxes Asset retirement obligations Regulatory liabilities Operating lease liabilities Accrued pension and other post-retirement benefit costs Investment tax credits Liabilities associated with assets held for sale Other Total other noncurrent liabilities Commitments and Contingencies Equity Preferred stock, Series A, $0.001 par value, 40 million depositary shares authorized and outstanding at 2022 and 2021 Preferred stock, Series B, $0.001 par value, 1 million shares authorized and outstanding at 2022 and 2021 Common stock, $0.001 par value, 2 billion shares authorized; 770 million and 769 million shares outstanding at 2022 and 2021 Additional paid-in capital Retained earnings Accumulated other comprehensive loss Total Duke Energy Corporation stockholders’ equity Noncontrolling interests Total equity Total Liabilities and Equity See Notes to Consolidated Financial Statements December 31, 2022 2021 $ 4,754 3,952 722 626 4,154 773 1,466 259 2,167 18,873 67,061 9,964 11,955 13,582 876 832 849 739 1,502 40,299 973 989 1 44,862 2,637 (140) 49,322 2,531 51,853 $ 3,531 3,304 731 530 3,387 647 1,211 167 2,423 15,931 60,448 9,379 11,953 16,152 940 855 833 612 1,348 42,072 973 989 1 44,371 3,265 (303) 49,296 1,840 51,136 $178,086 $ 169,587 60 PART IIDUKE ENERGY CORPORATION CONSOLIDATED STATEMENTS OF CASH FLOWS (in millions) CASH FLOWS FROM OPERATING ACTIVITIES Net income Adjustments to reconcile net income to net cash provided by operating activities: Depreciation, amortization and accretion (including amortization of nuclear fuel) Equity in (earnings) losses of unconsolidated affiliates Equity component of AFUDC Impairment of assets and other charges Deferred income taxes Contributions to qualified pension plans Payments for asset retirement obligations Provision for rate refunds Refund of AMT credit carryforwards (Increase) decrease in Net realized and unrealized mark-to-market and hedging transactions Receivables Inventory Other current assets(a) Increase (decrease) in Accounts payable Taxes accrued Other current liabilities Other assets(a) Other liabilities Net cash provided by operating activities CASH FLOWS FROM INVESTING ACTIVITIES Capital expenditures Contributions to equity method investments Return of investment capital Purchases of debt and equity securities Proceeds from sales and maturities of debt and equity securities Disbursements to canceled equity method investments Other Net cash used in investing activities (a) Includes approximately $2.6 billion for impacts of under-collected deferred fuel regulatory assets for the year ended December 31, 2022. See Notes to Consolidated Financial Statements Years Ended December 31, 2022 2021 2020 $ 2,455 $ 3,579 $ 1,082 5,843 (114) (197) 2,183 (200) (58) (584) (130) — 19 (788) (476) (1,498) 805 10 (153) (1,600) 410 5,927 (11,367) (58) 6 (4,243) 4,333 — (644) 5,663 (28) (171) 356 191 — (540) (70) — 50 (297) (34) (1,136) 249 284 (13) 112 95 5,486 2,005 (154) 984 54 — (610) (22) 572 63 (56) 66 205 (21) 117 (65) (408) (442) 8,290 8,856 (9,715) (81) 44 (6,098) 6,103 (855) (333) (9,907) (370) 133 (8,011) 7,949 — (398) (11,973) (10,935) (10,604) 61 PART IIDUKE ENERGY CORPORATION CONSOLIDATED STATEMENTS OF CASH FLOWS – (Continued) (in millions) CASH FLOWS FROM FINANCING ACTIVITIES Proceeds from the: Issuance of long-term debt Issuance of common stock Payments for the redemption of long-term debt Proceeds from the issuance of short-term debt with original maturities greater than 90 days Payments for the redemption of short-term debt with original maturities greater than 90 days Notes payable and commercial paper Contributions from noncontrolling interests Dividends paid Other Net cash provided by financing activities Net increase (decrease) in cash, cash equivalents and restricted cash Cash, cash equivalents and restricted cash at beginning of period Cash, cash equivalents and restricted cash at end of period Supplemental Disclosures: Cash paid for interest, net of amount capitalized Cash received from income taxes Significant non-cash transactions: Accrued capital expenditures Non-cash dividends (a) Includes approximately $2.6 billion for impacts of under-collected deferred fuel regulatory assets for the year ended December 31, 2022. See Notes to Consolidated Financial Statements Years Ended December 31, 2022 2021 2020 $ 11,874 9 (4,396) 80 (287) 781 1,377 (3,179) (130) $ 9,052 5 (5,294) 332 (997) 1,144 1,575 (3,114) (94) $ 6,330 2,745 (4,506) 3,009 (2,147) (1,181) 426 (2,812) (133) 6,129 2,609 1,731 83 520 603 $ (36) 556 (17) 573 $ 520 $ 556 $ 2,361 (6) $ 2,248 (3) $ 2,186 (585) 1,766 — 1,325 — 1,116 110 62 PART IIDUKE ENERGY CORPORATION CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (in millions) Preferred Stock Common Stock Shares Common Stock Additional Paid-in Capital Retained Earnings Net Gains (Losses) on Hedges(d) Net Unrealized Gains (Losses) on Available- for-Sale- Securities Total Duke Energy Corporation Stockholders’ Equity Pension and OPEB Adjustments Noncontrolling Interests Total Equity Duke Energy Corporation Stockholders’ Accumulated Other Comprehensive Income (Loss) Balance at December 31, 2019 $ 1,962 733 $ 1 $ 40,881 $ 4,108 $ (51) $ Net income (loss) Other comprehensive (loss) income Common stock issuances, including dividend reinvestment and employee Common stock dividends Contribution from noncontrolling interest(a) Distributions to noncontrolling interest in subsidiaries Other(b) — — — — — — — — — 36 — — — — — — — — — — — — 1,270 — — — (116) 2,902 — — (2,815) (17) — — 1 — (92) — — — — — Balance at December 31, 2020 $ 1,962 769 $ 1 $ 43,767 $ 2,471 $ (167) $ Net income (loss) Other comprehensive (loss) income Common stock issuances, including dividend reinvestment and employee Common stock dividends Sale of noncontrolling interest(c) Contribution from noncontrolling interest, net of transaction costs(a) Distributions to noncontrolling interest in subsidiaries Other — — — — — — — — — — — — — — — — — — — — — — — — — 3,802 — — — (65) — 68 — (3,008) — 545 — — (9) — — — — — — — — — 3 — 3 — — — — — 6 — (8) — — — — — — Balance at December 31, 2021 $ 1,962 769 $ 1 $ 44,371 $ 3,265 $ (232) $ (2) $ Net income (loss) Other comprehensive income (loss) Common stock issuances, including dividend reinvestment and employee benefits Common stock dividends Sale of noncontrolling interest(c) Purchase of noncontrolling interest Contribution from noncontrolling interest, net of transaction costs(a) Distributions to noncontrolling interests in subsidiaries Other — — — — — — — — — — — 1 — — — — — — — — — — — — — — — — 2,444 — — — 203 76 — — (3,073) — 465 — (51) — — 1 — — 1 — — — — — — — — (21) — — — — — — — $ (82) $ 46,822 $ 1,129 $ 47,951 — 6 — — — — — 1,270 (107) 2,902 (2,815) (17) — (91) (295) (11) 975 (118) — 2,902 — (2,815) 426 409 (30) 1 (30) (90) $ (76) $ 47,964 $ 1,220 $ 49,184 — 7 — — — — — — (69) — (19) — — — — — — — 3,802 (66) 68 (3,008) 545 — — (9) (329) 10 3,473 (56) 68 — — (3,008) 999 454 550 550 (66) 1 (66) (8) $ 49,296 $ 1,840 $ 51,136 2,444 163 76 (3,073) 465 (51) — — 2 (95) 11 2,349 174 — 76 — (3,073) 1,034 569 (20) 31 314 314 (140) 1 (140) 3 Balance at December 31, 2022 $ 1,962 770 $ 1 $ 44,862 $ 2,637 $ (29) $ (23) $ (88) $ 49,322 $ 2,531 $ 51,853 (a) Relates to tax equity financing activity in the Commercial Renewables Disposal Groups. (b) Amounts in Retained earnings primarily represent impacts due to implementation of a new accounting standard related to Current Estimated Credit Losses. See Note 1 for additional discussion. (c) Relates primarily to the sale of a noncontrolling interest in Duke Energy Indiana. See Note 2 for additional discussion. (d) See Duke Energy Consolidated Statements of Comprehensive Income for detailed activity related to Cash Flow and Fair Value Hedges. See Notes to Consolidated Financial Statements 63 PART IIREPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM To the shareholder and the Board of Directors of Duke Energy Carolinas, LLC Opinion on the Financial Statements We have audited the accompanying consolidated balance sheets of Duke Energy Carolinas, LLC and subsidiaries (the “Company”) as of December 31, 2022, and 2021, the related consolidated statements of operations and comprehensive income, changes in equity, and cash flows, for each of the three years in the period ended December 31, 2022, and the related notes (collectively referred to as the “financial statements”). In our opinion, the financial statements present fairly, in all material respects, the financial position of the Company as of December 31, 2022, and 2021, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 2022, in conformity with accounting principles generally accepted in the United States of America. Basis for Opinion These financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion on the Company’s financial statements based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB. We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. The Company is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. As part of our audits, we are required to obtain an understanding of internal control over financial reporting but not for the purpose of expressing an opinion on the effectiveness of the Company’s internal control over financial reporting. Accordingly, we express no such opinion. Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our opinion. Critical Audit Matter The critical audit matter communicated below is a matter arising from the current-period audit of the financial statements that was communicated or required to be communicated to the audit committee and that (1) relates to accounts or disclosures that are material to the financial statements and (2) involved our especially challenging, subjective, or complex judgments. The communication of critical audit matters does not alter in any way our opinion on the financial statements, taken as a whole, and we are not, by communicating the critical audit matter below, providing a separate opinion on the critical audit matter or on the accounts or disclosures to which it relates. Regulatory Matters – Impact of Rate Regulation on the Financial Statements – Refer to Notes 1, 4 and 10 to the financial statements. Critical Audit Matter Description The Company is subject to rate regulation by the North Carolina Utilities Commission and by the South Carolina Public Service Commission (collectively the “Commissions”), which have jurisdiction with respect to the electric rates of the Company. Management has determined it meets the criteria for the application of regulated operations accounting in preparing its financial statements under accounting principles generally accepted in the United States of America. Significant judgment can be required to determine if otherwise recognizable incurred costs qualify to be presented as a regulatory asset and deferred because such costs are probable of future recovery in customer rates. As discussed in Note 4, regulatory proceedings in recent years have focused on the recoverability of storm costs, fuel costs, and asset retirement obligations specific to coal ash. As a result, assessing the potential outcomes of future regulatory orders requires significant management judgment. As of December 31, 2022, the Company has approximately $5.4 billion recorded as regulatory assets. We identified the impact of rate regulation related to regulatory assets as a critical audit matter due to the significant judgments made by management, including assumptions regarding the outcome of future decisions by the Commissions, to support its assertions on the likelihood of future recovery for deferred costs. Given that management’s accounting judgments are based on assumptions about the outcome of future decisions by the Commissions, auditing these judgments required specialized knowledge of accounting for rate regulation and the ratemaking process due to its inherent complexities as it relates to regulatory assets. 64 PART IIHow the Critical Audit Matter Was Addressed in the Audit Our audit procedures related to the recovery of regulatory assets included the following, among others: • We tested the effectiveness of management’s controls over the evaluation of the likelihood of the recovery in future rates and the monitoring and evaluation of regulatory developments that may affect the likelihood of recovering costs in future rates. • We evaluated the Company’s disclosures related to the impacts of rate regulation, including the balances recorded and regulatory developments. • We read relevant regulatory orders issued by the Commissions, regulatory statutes, interpretations, procedural memorandums, filings made by intervenors, and other publicly available information to assess the likelihood of recovery in future rates based on precedents of the Commissions’ treatment of similar costs under similar circumstances. We evaluated the external information and compared it to management’s recorded balances for completeness. • For regulatory matters in process, we inspected the Company’s and intervenors’ filings with the Commission, that may impact the Company’s future rates, for any evidence that might contradict management’s assertions. • We evaluated the reasonableness of management’s judgments regarding the recoverability of regulatory asset balances by performing the following: ˚ We inquired of management regarding changes in regulatory orders and regulatory asset balances during the year. ˚ We evaluated the reasonableness of such changes based on our knowledge of commission-approved amortization, expected incurred costs, and recently approved regulatory orders, as applicable. ˚ We utilized trend analyses to evaluate the historical consistency of regulatory asset balances. ˚ We compared the recorded regulatory asset balance to an independently developed expectation of the corresponding balance. • We obtained an analysis from management and letters from internal legal counsel for asset retirement obligations specific to coal ash costs, regarding probability of recovery for deferred costs not yet addressed in a regulatory order to assess management’s assertion that amounts are probable of recovery. • We obtained representation from management asserting that regulatory assets recorded in the financial statements are probable of recovery. /s/ Deloitte & Touche LLP Charlotte, North Carolina February 27, 2023 We have served as the Company’s auditor since 1947. 65 PART IIDUKE ENERGY CAROLINAS, LLC CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (in millions) Operating Revenues Operating Expenses Fuel used in electric generation and purchased power Operation, maintenance and other Depreciation and amortization Property and other taxes Impairment of assets and other charges Total operating expenses Gains on Sales of Other Assets and Other, net Operating Income Other Income and Expenses, net Interest Expense Income Before Income Taxes Income Tax Expense Net Income Other Comprehensive Income, net of tax Net unrealized gain on cash flow hedges Other Comprehensive Income, net of tax Comprehensive Income Years Ended December 31, 2022 2021 2020 $ 7,857 $ 7,102 $ 7,015 2,015 1,892 1,526 340 26 5,799 4 2,062 221 557 1,726 126 1,601 1,833 1,468 320 227 5,449 2 1,655 270 538 1,387 51 1,682 1,743 1,462 299 476 5,662 1 1,354 177 487 1,044 88 $ 1,600 $ 1,336 $ 956 — — 1 1 — — $ 1,600 $ 1,337 $ 956 See Notes to Consolidated Financial Statements 66 PART II DUKE ENERGY CAROLINAS, LLC CONSOLIDATED BALANCE SHEETS (in millions) ASSETS Current Assets Cash and cash equivalents Receivables (net of allowance for doubtful accounts of $3 at 2022 and $1 at 2021) Receivables of VIEs (net of allowance for doubtful accounts of $65 at 2022 and $41 at 2021) Receivables from affiliated companies Inventory Regulatory assets (includes $12 at 2022 and 2021 related to VIEs) Other (includes $8 at 2022 related to VIEs) Total current assets Property, Plant and Equipment Cost Accumulated depreciation and amortization Facilities to be retired, net Net property, plant and equipment Other Noncurrent Assets Regulatory assets (includes $208 at 2022 and $220 at 2021 related to VIEs) Nuclear decommissioning trust funds Operating lease right-of-use assets, net Other Total other noncurrent assets Total Assets LIABILITIES AND EQUITY Current Liabilities Accounts payable Accounts payable to affiliated companies Notes payable to affiliated companies Taxes accrued Interest accrued Current maturities of long-term debt (includes $10 at 2022 and $5 at 2021 related to VIEs) Asset retirement obligations Regulatory liabilities Other Total current liabilities Long-Term Debt (includes $689 at 2022 and $703 at 2021 related to VIEs) Long-Term Debt Payable to Affiliated Companies Other Noncurrent Liabilities Deferred income taxes Asset retirement obligations Regulatory liabilities Operating lease liabilities Accrued pension and other post-retirement benefit costs Investment tax credits Other Total other noncurrent liabilities Commitments and Contingencies Equity Member's equity Accumulated other comprehensive loss Total equity Total Liabilities and Equity See Notes to Consolidated Financial Statements 67 December 31, 2022 2021 $ 44 338 928 390 1,164 1,095 216 4,175 $ 7 300 844 190 1,026 544 95 3,006 54,650 (18,669) — 51,874 (17,854) 102 35,981 34,122 4,293 4,783 78 1,036 2,935 5,759 92 1,248 10,190 10,034 $ 50,346 $ 47,162 $ 1,472 209 1,233 228 120 1,018 261 530 580 5,651 12,948 300 4,153 5,121 5,783 83 38 300 527 $ 988 266 226 274 125 362 249 487 546 3,523 12,595 318 3,634 5,052 7,198 78 50 287 536 16,005 16,835 15,448 (6) 15,442 13,897 (6) 13,891 $ 50,346 $ 47,162 PART II DUKE ENERGY CAROLINAS, LLC CONSOLIDATED STATEMENTS OF CASH FLOWS (in millions) CASH FLOWS FROM OPERATING ACTIVITIES Net income Adjustments to reconcile net income to net cash provided by operating activities: Depreciation and amortization (including amortization of nuclear fuel) Equity component of AFUDC Impairment of assets and other charges Deferred income taxes Contributions to qualified pension plans Payments for asset retirement obligations Provision for rate refunds (Increase) decrease in Net realized and unrealized mark-to-market and hedging transactions Receivables Receivables from affiliated companies Inventory Other current assets(a) Increase (decrease) in Accounts payable Accounts payable to affiliated companies Taxes accrued Other current liabilities Other assets(a) Other liabilities Net cash provided by operating activities CASH FLOWS FROM INVESTING ACTIVITIES Capital expenditures Purchases of debt and equity securities Proceeds from sales and maturities of debt and equity securities Other Net cash used in investing activities CASH FLOWS FROM FINANCING ACTIVITIES Proceeds from the issuance of long-term debt Payments for the redemption of long-term debt Notes payable to affiliated companies Distributions to parent Other Net cash provided by financing activities Net increase (decrease) in cash, cash equivalents and restricted cash Cash, cash equivalents and restricted cash at beginning of period Cash, cash equivalents and restricted cash at end of period Supplemental Disclosures: Cash paid for interest, net of amount capitalized Cash (received from) paid for income taxes Significant non-cash transactions: Accrued capital expenditures (a) Includes approximately $1.3 billion for impacts of under-collected deferred fuel regulatory assets for the year ended December 31, 2022. See Notes to Consolidated Financial Statements 68 Years Ended December 31, 2022 2021 2020 $ 1,600 $ 1,336 $ 956 1,787 (98) 26 210 (15) (200) (74) — (102) (200) (138) (592) 377 (75) (46) (91) (764) (36) 1,743 (65) 227 (213) — (182) (46) — (99) (66) (16) (309) 5 85 206 (39) 21 116 1,731 (62) 476 (260) — (162) (5) (4) 52 (10) (14) 209 55 (11) 30 (56) (102) (47) 1,569 2,704 2,776 (3,304) (2,633) 2,633 (181) (3,485) 1,441 (436) 1,007 (50) (1) 1,961 45 8 53 546 (60) 475 $ $ (2,693) (3,425) 3,425 (177) (2,870) 1,651 (617) (280) (600) (1) 153 (13) 21 8 508 233 359 $ $ (2,669) (1,602) 1,602 (164) (2,833) 998 (813) 477 (600) (2) 60 3 18 21 481 321 365 $ $ PART IIDUKE ENERGY CAROLINAS, LLC CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (in millions) Balance at December 31, 2019 Net income Distributions to parent Other(a) Balance at December 31, 2020 Net income Other comprehensive income Distributions to parent Balance at December 31, 2021 Net income Distributions to parent Other Balance at December 31, 2022 Accumulated Other Comprehensive Income (Loss) Net Gains (Losses) on Cash Flow Hedges $ $ $ $ (7) — — — (7) — 1 — (6) — — — (6 ) Member’s Equity $ 12,818 956 (600) (13) $ 13,161 1,336 — (600) $ 13,897 1,600 (50) 1 $ 15,448 Total Equity $ 12,811 956 (600) (13) $ 13,154 1,336 1 (600) $ 13,891 1,600 (50) 1 $ 15,442 (a) Amounts primarily represent impacts due to implementation of a new accounting standard related to Credit Losses. See Note 1 for additional discussion. See Notes to Consolidated Financial Statements 69 PART IIREPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM To the shareholder and the Board of Directors of Progress Energy, Inc. Opinion on the Financial Statements We have audited the accompanying consolidated balance sheets of Progress Energy, Inc. and subsidiaries (the “Company”) as of December 31, 2022, and 2021, the related consolidated statements of operations and comprehensive income, changes in equity, and cash flows, for each of the three years in the period ended December 31, 2022, and the related notes (collectively referred to as the “financial statements”). In our opinion, the financial statements present fairly, in all material respects, the financial position of the Company as of December 31, 2022, and 2021, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 2022, in conformity with accounting principles generally accepted in the United States of America. Basis for Opinion These financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion on the Company’s financial statements based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB. We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. The Company is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. As part of our audits, we are required to obtain an understanding of internal control over financial reporting but not for the purpose of expressing an opinion on the effectiveness of the Company’s internal control over financial reporting. Accordingly, we express no such opinion. Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our opinion. Critical Audit Matter The critical audit matter communicated below is a matter arising from the current-period audit of the financial statements that was communicated or required to be communicated to the audit committee and that (1) relates to accounts or disclosures that are material to the financial statements and (2) involved our especially challenging, subjective, or complex judgments. The communication of critical audit matters does not alter in any way our opinion on the financial statements, taken as a whole, and we are not, by communicating the critical audit matter below, providing a separate opinion on the critical audit matter or on the accounts or disclosures to which it relates. Regulatory Matters – Impact of Rate Regulation on the Financial Statements – Refer to Notes 1, 4 and 10 to the financial statements. Critical Audit Matter Description The Company is subject to rate regulation by the North Carolina Utilities Commission, South Carolina Public Service Commission and Florida Public Service Commission (collectively the “Commissions”), which have jurisdiction with respect to the electric rates of the Company. Management has determined it meets the criteria for the application of regulated operations accounting in preparing its financial statements under accounting principles generally accepted in the United States of America. Significant judgment can be required to determine if otherwise recognizable incurred costs qualify to be presented as a regulatory asset and deferred because such costs are probable of future recovery in customer rates. As discussed in Note 4, regulatory proceedings in recent years have focused on the recoverability of storm costs, fuel costs, and asset retirement obligations specific to coal ash. As a result, assessing the potential outcomes of future regulatory orders requires significant management judgment. As of December 31, 2022, the Company has approximately $9 billion recorded as regulatory assets. We identified the impact of rate regulation related to regulatory assets as a critical audit matter due to the significant judgments made by management, including assumptions regarding the outcome of future decisions by the Commissions, to support its assertions on the likelihood of future recovery for deferred costs. Given that management’s accounting judgments are based on assumptions about the outcome of future decisions by the Commissions, auditing these judgments required specialized knowledge of accounting for rate regulation and the ratemaking process due to its inherent complexities as it relates to regulatory assets. 70 PART IIHow the Critical Audit Matter Was Addressed in the Audit Our audit procedures related to the recovery of regulatory assets included the following, among others: • We tested the effectiveness of management’s controls over the evaluation of the likelihood of the recovery in future rates and the monitoring and evaluation of regulatory developments that may affect the likelihood of recovering costs in future rates. • We evaluated the Company’s disclosures related to the impacts of rate regulation, including the balances recorded and regulatory developments. • We read relevant regulatory orders issued by the Commissions, regulatory statutes, interpretations, procedural memorandums, filings made by interveners, and other publicly available information to assess the likelihood of recovery in future rates based on precedents of the Commissions’ treatment of similar costs under similar circumstances. We evaluated the external information and compared it to management’s recorded balances for completeness. • For regulatory matters in process, we inspected the Company’s and intervenors’ filings with the Commissions, that may impact the Company’s future rates, for any evidence that might contradict management’s assertions. • We evaluated the reasonableness of management’s judgments regarding the recoverability of regulatory asset balances by performing the following: ˚ We inquired of management regarding changes in regulatory orders and regulatory asset balances during the year. ˚ We evaluated the reasonableness of such changes based on our knowledge of commission-approved amortization, expected incurred costs, and recently approved regulatory orders, as applicable. ˚ We utilized trend analyses to evaluate the historical consistency of regulatory asset balances. ˚ We compared the recorded regulatory asset balance to an independently developed expectation of the corresponding balance. • We obtained an analysis from management and letters from internal legal counsel for asset retirement obligations specific to coal ash costs, regarding probability of recovery for deferred costs not yet addressed in a regulatory order to assess management’s assertion that amounts are probable of recovery. • We obtained representation from management asserting that regulatory assets recorded in the financial statements are probable of recovery. /s/ Deloitte & Touche LLP Charlotte, North Carolina February 27, 2023 We have served as the Company’s auditor since 1930. 71 PART IIPROGRESS ENERGY, INC. CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (in millions) Operating Revenues Operating Expenses Fuel used in electric generation and purchased power Operation, maintenance and other Depreciation and amortization Property and other taxes Impairment of assets and other charges Total operating expenses Gains on Sales of Other Assets and Other, net Operating Income Other Income and Expenses, net Interest Expense Income Before Income Taxes Income Tax Expense Net Income Less: Net Income Attributable to Noncontrolling Interests Net Income Attributable to Parent Net Income Other Comprehensive Income, net of tax Pension and OPEB adjustments Net unrealized gain on cash flow hedges Unrealized (losses) gains on available-for-sale securities Other Comprehensive Income, net of tax Comprehensive Income Less: Comprehensive Income Attributable to Noncontrolling Interests Comprehensive Income Attributable to Parent See Notes to Consolidated Financial Statements Years Ended December 31, 2022 2021 2020 $13,125 $11,057 $10,627 5,078 2,458 2,142 607 12 10,297 11 2,839 181 844 2,176 348 1,828 — 3,584 2,529 1,929 542 82 8,666 14 2,405 215 794 1,826 227 1,599 1 3,479 2,479 1,818 545 495 8,816 9 1,820 129 790 1,159 113 1,046 1 $ 1,828 $ 1,598 $ 1,045 $ 1,828 $ 1,599 $ 1,046 5 1 (6) — 1,828 — 1 3 — 4 1,603 1 (1) 5 (1) 3 1,049 1 $ 1,828 $ 1,602 $ 1,048 72 PART II PROGRESS ENERGY, INC. CONSOLIDATED BALANCE SHEETS (in millions) ASSETS Current Assets Cash and cash equivalents Receivables (net of allowance for doubtful accounts of $13 at 2022 and $11 at 2021) Receivables of VIEs (net of allowance for doubtful accounts of $68 at 2022 and $25 at 2021) Receivables from affiliated companies Inventory Regulatory assets (includes $94 at 2022 and $93 at 2021 related to VIEs) Other (includes $88 at 2022 and $39 at 2021 related to VIEs) Total current assets Property, Plant and Equipment Cost Accumulated depreciation and amortization Facilities to be retired, net Net property, plant and equipment Other Noncurrent Assets Goodwill Regulatory assets (includes $1,507 at 2022 and $1,603 at 2021 related to VIEs) Nuclear decommissioning trust funds Operating lease right-of-use assets, net Other Total other noncurrent assets Total Assets LIABILITIES AND EQUITY Current Liabilities Accounts payable Accounts payable to affiliated companies Notes payable to affiliated companies Taxes accrued Interest accrued Current maturities of long-term debt (includes $340 at 2022 and $71 at 2021 related to VIEs) Asset retirement obligations Regulatory liabilities Other Total current liabilities Long-Term Debt (includes $2,003 at 2022 and $2,293 at 2021 related to VIEs) Long-Term Debt Payable to Affiliated Companies Other Noncurrent Liabilities Deferred income taxes Asset retirement obligations Regulatory liabilities Operating lease liabilities Accrued pension and other post-retirement benefit costs Investment tax credits Other Total other noncurrent liabilities Commitments and Contingencies Equity Common stock, $0.01 par value, 100 shares authorized and outstanding at 2022 and 2021 Additional paid-in capital Retained earnings Accumulated other comprehensive loss Total Progress Energy, Inc. stockholder's equity Noncontrolling interests Total equity Total Liabilities and Equity See Notes to Consolidated Financial Statements 73 December 31, 2022 2021 $ 108 318 1,289 22 1,579 1,833 342 5,491 64,822 (20,584) — 44,238 3,655 7,146 3,855 628 1,066 $ 70 247 1,006 121 1,398 1,030 125 3,997 60,894 (19,214) 26 41,706 3,655 5,909 4,642 691 1,242 16,350 16,139 $ 66,079 $ 61,842 $ 1,481 712 843 135 206 697 289 576 782 5,721 21,592 150 5,147 5,892 4,753 546 292 358 222 $ 1,099 506 2,809 128 192 1,082 275 478 868 7,437 19,591 150 4,564 5,837 5,566 606 417 364 162 17,210 17,516 — 11,832 9,585 (11) 21,406 — 21,406 — 9,149 8,007 (11) 17,145 3 17,148 $ 66,079 $ 61,842 PART II PROGRESS ENERGY, INC. CONSOLIDATED STATEMENTS OF CASH FLOWS (in millions) CASH FLOWS FROM OPERATING ACTIVITIES Net income Adjustments to reconcile net income to net cash provided by operating activities: Depreciation, amortization and accretion (including amortization of nuclear fuel) Equity component of AFUDC Impairment of assets and other charges Deferred income taxes Contributions to qualified pension plans Payments for asset retirement obligations Provision for rate refunds (Increase) decrease in Net realized and unrealized mark-to-market and hedging transactions Receivables Receivables from affiliated companies Inventory Other current assets(a) Increase (decrease) in Accounts payable Accounts payable to affiliated companies Taxes accrued Other current liabilities Other assets(a) Other liabilities Net cash provided by operating activities CASH FLOWS FROM INVESTING ACTIVITIES Capital expenditures Purchases of debt and equity securities Proceeds from sales and maturities of debt and equity securities Notes receivable from affiliated companies Other Net cash used in investing activities CASH FLOWS FROM FINANCING ACTIVITIES Proceeds from the issuance of long-term debt Payments for the redemption of long-term debt Notes payable to affiliated companies Dividends to parent Other Net cash provided by financing activities Net increase (decrease) in cash, cash equivalents and restricted cash Cash, cash equivalents and restricted cash at beginning of period Cash, cash equivalents and restricted cash at end of period Supplemental Disclosures: Cash paid for interest, net of amount capitalized Cash paid for income taxes Significant non-cash transactions: Accrued capital expenditures (a) Includes approximately $1.3 billion for impacts of under-collected deferred fuel regulatory assets for the year ended December 31, 2022. See Notes to Consolidated Financial Statements 74 Years Ended December 31, 2022 2021 2020 $ 1,828 $ 1,599 $ 1,046 2,405 (68) 12 364 (13) (291) (58) — (322) 117 (183) (937) 222 206 8 96 (1,116) 573 2,843 (4,317) (1,341) 1,417 — (137) (4,378) 2,775 (1,173) 465 (425) (36) 1,606 $ $ 71 113 184 854 79 663 2,302 (51) 82 247 — (288) (36) 51 (97) 18 (26) (551) 59 217 13 (32) (110) (99) 2,327 (42) 495 (197) — (384) 2 (9) (69) (81) 49 223 (62) (21) 75 139 (137) (177) 3,298 3,177 (3,668) (2,233) 2,322 — (156) (3,735) 3,095 (1,883) (160) (700) (2) 350 (87) 200 113 813 14 501 $ $ (3,488) (5,998) 6,010 164 (160) (3,472) 1,791 (2,157) 1,148 (400) (13) 369 74 126 200 819 149 363 $ $ PART IIPROGRESS ENERGY, INC. CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (in millions) Accumulated Other Comprehensive Income (Loss) Additional Paid-in Capital Retained Earnings Net Gains (Losses) on Cash Flow Hedges Net Unrealized Gains (Losses) on Available-for- Sale Securities Pension and OPEB Adjustments Total Progress Energy, Inc. Stockholder’s Equity Noncontrolling Interests Total Equity Balance at December 31, 2019 $ 9,143 $ 6,465 $ (10) $ (1) $ (7) $ 15,590 $ 3 $ 15,593 Net income Other comprehensive income (loss) Dividends to parent Other — — — — 1,045 — (400) (1) — 5 — — — (1) — — — (1) — — Balance at December 31, 2020 $ 9,143 $ 7,109 $ (5) $ (2) $ (8) Net income Other comprehensive income Distributions to noncontrolling interests Dividends to parent Other — — — — 6 1,598 — — (700) — — 3 — — — — — — — — — 1 — — — 1,045 3 (400) (1) $ 16,237 1,598 4 — (700) 6 $ 1 — — — 4 1 — (1) — (1) 1,046 3 (400) (1) $ 16,241 1,599 4 (1) (700) 5 Balance at December 31, 2021 $ 9,149 $ 8,007 $ (2) $ (2) $ (7) $ 17,145 $ 3 $ 17,148 Net income Other comprehensive income (loss) Distributions to noncontrolling interests Dividends to parent Equitization of certain notes payable to affiliates Purchase of a noncontrolling interest Other — — — (175) 2,907 (51) 2 1,828 — — (250) — — — — 1 — — — — — — (6) — — — — — — 5 — — — — — 1,828 — — (425) 2,907 (51) 2 — — (34) — — 31 — 1,828 — (34) (425) 2,907 (20) 2 Balance at December 31, 2022 $ 11,832 $ 9,585 $ (1) $ (8) $ (2) $ 21,406 $ — $ 21,406 See Notes to Consolidated Financial Statements 75 PART IIREPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM To the shareholder and the Board of Directors of Duke Energy Progress, LLC Opinion on the Financial Statements We have audited the accompanying consolidated balance sheets of Duke Energy Progress, LLC and subsidiaries (the “Company”) as of December 31, 2022, and 2021, the related consolidated statements of operations and comprehensive income, changes in equity, and cash flows, for each of the three years in the period ended December 31, 2022, and the related notes (collectively referred to as the “financial statements”). In our opinion, the financial statements present fairly, in all material respects, the financial position of the Company as of December 31, 2022, and 2021, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 2022, in conformity with accounting principles generally accepted in the United States of America. Basis for Opinion These financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion on the Company’s financial statements based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB. We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. The Company is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. As part of our audits, we are required to obtain an understanding of internal control over financial reporting but not for the purpose of expressing an opinion on the effectiveness of the Company’s internal control over financial reporting. Accordingly, we express no such opinion. Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our opinion. Critical Audit Matter The critical audit matter communicated below is a matter arising from the current-period audit of the financial statements that was communicated or required to be communicated to the audit committee and that (1) relates to accounts or disclosures that are material to the financial statements and (2) involved our especially challenging, subjective, or complex judgments. The communication of critical audit matters does not alter in any way our opinion on the financial statements, taken as a whole, and we are not, by communicating the critical audit matter below, providing a separate opinion on the critical audit matter or on the accounts or disclosures to which it relates. Regulatory Matters – Impact of Rate Regulation on the Financial Statements – Refer to Notes 1, 4 and 10 to the financial statements. Critical Audit Matter Description The Company is subject to rate regulation by the North Carolina Utilities Commission and by the South Carolina Public Service Commission (collectively the “Commissions”), which have jurisdiction with respect to the electric rates of the Company. Management has determined it meets the criteria for the application of regulated operations accounting in preparing its financial statements under accounting principles generally accepted in the United States of America. Significant judgment can be required to determine if otherwise recognizable incurred costs qualify to be presented as a regulatory asset and deferred because such costs are probable of future recovery in customer rates. As discussed in Note 4, regulatory proceedings in recent years have focused on the recoverability of storm costs, fuel costs, and asset retirement obligations specific to coal ash. As a result, assessing the potential outcomes of future regulatory orders requires significant management judgment. As of December 31, 2022, the Company has approximately $5.4 billion recorded as regulatory assets. We identified the impact of rate regulation related to regulatory assets as a critical audit matter due to the significant judgments made by management, including assumptions regarding the outcome of future decisions by the Commissions, to support its assertions on the likelihood of future recovery for deferred costs. Given that management’s accounting judgments are based on assumptions about the outcome of future decisions by the Commissions, auditing these judgments required specialized knowledge of accounting for rate regulation and the ratemaking process due to its inherent complexities as it relates to regulatory assets. 76 PART IIHow the Critical Audit Matter Was Addressed in the Audit Our audit procedures related to the recovery of regulatory assets included the following, among others: • We tested the effectiveness of management’s controls over the evaluation of the likelihood of the recovery in future rates and the monitoring and evaluation of regulatory developments that may affect the likelihood of recovering costs in future rates. • We evaluated the Company’s disclosures related to the impacts of rate regulation, including the balances recorded and regulatory developments. • We read relevant regulatory orders issued by the Commissions, regulatory statutes, interpretations, procedural memorandums, filings made by interveners, and other publicly available information to assess the likelihood of recovery in future rates based on precedents of the Commissions’ treatment of similar costs under similar circumstances. We evaluated the external information and compared it to management’s recorded balances for completeness. • For regulatory matters in process, we inspected the Company’s and intervenors’ filings with the Commissions, that may impact the Company’s future rates, for any evidence that might contradict management’s assertions. • We evaluated the reasonableness of management’s judgments regarding the recoverability of regulatory asset balances by performing the following: ˚ We inquired of management regarding changes in regulatory orders and regulatory asset balances during the year. ˚ We evaluated the reasonableness of such changes based on our knowledge of commission-approved amortization, expected incurred costs, and recently approved regulatory orders, as applicable. ˚ We utilized trend analyses to evaluate the historical consistency of regulatory asset balances. ˚ We compared the recorded regulatory asset balance to an independently developed expectation of the corresponding balance. • We obtained an analysis from management and letters from internal legal counsel for asset retirement obligations specific to coal ash costs, regarding probability of recovery for deferred costs not yet addressed in a regulatory order to assess management’s assertion that amounts are probable of recovery. • We obtained representation from management asserting that regulatory assets recorded in the financial statements are probable of recovery. /s/ Deloitte & Touche LLP Charlotte, North Carolina February 27, 2023 We have served as the Company’s auditor since 1930. 77 PART IIDUKE ENERGY PROGRESS, LLC CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (in millions) Operating Revenues Operating Expenses Fuel used in electric generation and purchased power Operation, maintenance and other Depreciation and amortization Property and other taxes Impairment of assets and other charges Total operating expenses Gains on Sales of Other Assets and Other, net Operating Income Other Income and Expenses, net Interest Expense Income Before Income Taxes Income Tax Expense (Benefit) Net Income and Comprehensive Income See Notes to Consolidated Financial Statements Years Ended December 31, 2022 2021 2020 $ 6,753 $ 5,780 $5,422 2,492 1,475 1,187 190 7 5,351 4 1,406 114 354 1,166 158 1,778 1,467 1,097 159 63 4,564 13 1,229 143 306 1,066 75 1,743 1,332 1,116 167 499 4,857 8 573 75 269 379 (36) $ 1,008 $ 991 $ 415 78 PART II DUKE ENERGY PROGRESS, LLC CONSOLIDATED BALANCE SHEETS (in millions) ASSETS Current Assets Cash and cash equivalents Receivables (net of allowance for doubtful accounts of $4 at 2022 and 2021) Receivables of VIEs (net of allowance for doubtful accounts of $40 at 2022 and $17 at 2021) Receivables from affiliated companies Inventory Regulatory assets (includes $39 at 2022 and 2021 related to VIEs) Other (includes $42 at 2022 related to VIEs) Total current assets Property, Plant and Equipment Cost Accumulated depreciation and amortization Facilities to be retired, net Net property, plant and equipment Other Noncurrent Assets Regulatory assets (includes $681 at 2022 and $720 at 2021 related to VIEs) Nuclear decommissioning trust funds Operating lease right-of-use assets, net Other Total other noncurrent assets Total Assets LIABILITIES AND EQUITY Current Liabilities Accounts payable Accounts payable to affiliated companies Notes payable to affiliated companies Taxes accrued Interest accrued Current maturities of long-term debt (includes $34 at 2022 and $15 at 2021 related to VIEs) Asset retirement obligations Regulatory liabilities Other Total current liabilities Long-Term Debt (includes $1,114 at 2022 and $1,097 at 2021 related to VIEs) Long-Term Debt Payable to Affiliated Companies Other Noncurrent Liabilities Deferred income taxes Asset retirement obligations Regulatory liabilities Operating lease liabilities Accrued pension and other post-retirement benefit costs Investment tax credits Other Total other noncurrent liabilities Commitments and Contingencies Equity Member’s Equity Total Liabilities and Equity See Notes to Consolidated Financial Statements 79 December 31, 2022 2021 $ 49 167 793 25 1,006 690 174 2,904 38,875 (14,201) — $ 35 127 574 65 921 533 83 2,338 37,018 (13,387) 26 24,674 23,657 4,724 3,430 370 650 9,174 4,118 4,089 389 792 9,388 $36,752 $35,383 $ 601 508 238 77 101 369 288 332 384 2,898 10,568 150 2,477 5,535 4,120 335 160 124 76 $ 476 310 172 163 96 556 274 381 448 2,876 9,543 150 2,208 5,401 4,868 350 221 128 87 12,827 13,263 10,309 9,551 $36,752 $35,383 PART IIDUKE ENERGY PROGRESS, LLC CONSOLIDATED STATEMENTS OF CASH FLOWS (in millions) CASH FLOWS FROM OPERATING ACTIVITIES Net income Adjustments to reconcile net income to net cash provided by operating activities: Depreciation and amortization (including amortization of nuclear fuel) Equity component of AFUDC Impairment of assets and other charges Deferred income taxes Contributions to qualified pension plans Payments for asset retirement obligations Provisions for rate refunds (Increase) decrease in Net realized and unrealized mark-to-market and hedging transactions Receivables Receivables from affiliated companies Inventory Other current assets(a) Increase (decrease) in Accounts payable Accounts payable to affiliated companies Taxes accrued Other current liabilities Other assets(a) Other liabilities Net cash provided by operating activities CASH FLOWS FROM INVESTING ACTIVITIES Capital expenditures Purchases of debt and equity securities Proceeds from sales and maturities of debt and equity securities Other Net cash used in investing activities CASH FLOWS FROM FINANCING ACTIVITIES Proceeds from the issuance of long-term debt Payments for the redemption of long-term debt Notes payable to affiliated companies Distributions to parent Other Net cash provided by (used in) financing activities Net increase in cash, cash equivalents and restricted cash Cash, cash equivalents and restricted cash at beginning of period Cash, cash equivalents and restricted cash at end of period Supplemental Disclosures: Cash paid for interest, net of amount capitalized Cash paid for income taxes Significant non-cash transactions: Accrued capital expenditures (a) Includes approximately $402 million for impacts of under-collected deferred fuel regulatory assets for the year ended December 31, 2022. See Notes to Consolidated Financial Statements 80 Years Ended December 31, 2022 2021 2020 $ 1,008 $ 991 $ 415 1,371 (52) 7 121 (8) (193) (58) — (228) 58 (85) (207) 20 198 (86) 13 (416) 38 1,286 (34) 63 (46) — (187) (36) 48 (52) (33) (11) (147) 12 95 83 (23) (37) (16) 1,299 (29) 499 (234) — (304) 2 1 (4) 2 23 98 (127) 12 68 157 (215) 3 1,501 1,956 1,666 (2,070) (1,148) 1,138 (29) (1,746) (1,931) 1,914 (20) (2,109) (1,783) 1,477 (645) 67 (250) (1) 648 40 39 79 386 157 269 $ $ 1,959 (1,308) (123) (700) (1) (173) — 39 39 335 83 163 $ $ (1,581) (1,555) 1,516 (57) (1,677) 1,296 (1,085) 229 (400) (12) 28 17 22 39 301 123 149 $ $ PART II DUKE ENERGY PROGRESS, LLC CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (in millions) Balance at December 31, 2019 Net income Distribution to parent Other Balance at December 31, 2020 Net income Distribution to parent Balance at December 31, 2021 Net income Distribution to parent Balance at December 31, 2022 See Notes to Consolidated Financial Statements Member’s Equity $ 9,246 415 (400) (1) $ 9,260 991 (700) $ 9,551 1,008 (250) $10,309 81 PART IIREPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM To the shareholder and the Board of Directors of Duke Energy Florida, LLC Opinion on the Financial Statements We have audited the accompanying consolidated balance sheets of Duke Energy Florida, LLC and subsidiaries (the “Company”) as of December 31, 2022, and 2021, the related consolidated statements of operations and comprehensive income, changes in equity, and cash flows, for each of the three years in the period ended December 31, 2022, and the related notes (collectively referred to as the “financial statements”). In our opinion, the financial statements present fairly, in all material respects, the financial position of the Company as of December 31, 2022, and 2021, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 2022, in conformity with accounting principles generally accepted in the United States of America. Basis for Opinion These financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion on the Company’s financial statements based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB. We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. The Company is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. As part of our audits, we are required to obtain an understanding of internal control over financial reporting but not for the purpose of expressing an opinion on the effectiveness of the Company’s internal control over financial reporting. Accordingly, we express no such opinion. Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our opinion. Critical Audit Matter The critical audit matter communicated below is a matter arising from the current-period audit of the financial statements that was communicated or required to be communicated to the audit committee and that (1) relates to accounts or disclosures that are material to the financial statements and (2) involved our especially challenging, subjective, or complex judgments. The communication of critical audit matters does not alter in any way our opinion on the financial statements, taken as a whole, and we are not, by communicating the critical audit matter below, providing a separate opinion on the critical audit matter or on the accounts or disclosures to which it relates. Regulatory Matters – Impact of Rate Regulation on the Financial Statements – Refer to Notes 1 and 4 to the financial statements. Critical Audit Matter Description The Company is subject to rate regulation by the Florida Public Service Commission (the “Commission”), which has jurisdiction with respect to the electric rates of the Company. Management has determined it meets the criteria for the application of regulated operations accounting in preparing its financial statements under accounting principles generally accepted in the United States of America. Significant judgment can be required to determine if otherwise recognizable incurred costs qualify to be presented as a regulatory asset and deferred because such costs are probable of future recovery in customer rates. As discussed in Note 4, regulatory proceedings in recent years have focused on the recoverability of storm and fuel costs. As a result, assessing the potential outcomes of future regulatory orders in Florida requires significant management judgment. As of December 31, 2022, the Company has approximately $3.6 billion recorded as regulatory assets. We identified the impact of rate regulation related to regulatory assets as a critical audit matter due to the significant judgments made by management, including assumptions regarding the outcome of future decisions by the Commission, to support its assertions on the likelihood of future recovery for deferred costs. Given that management’s accounting judgments are based on assumptions about the outcome of future decisions by the Commission, auditing these judgments required specialized knowledge of accounting for rate regulation and the ratemaking process due to its inherent complexities as it relates to regulatory assets. 82 PART IIHow the Critical Audit Matter Was Addressed in the Audit Our audit procedures related to the recovery of regulatory assets included the following, among others: • We tested the effectiveness of management’s controls over the evaluation of the likelihood of the recovery in future rates and the monitoring and evaluation of regulatory developments that may affect the likelihood of recovering costs in future rates. • We evaluated the Company’s disclosures related to the impacts of rate regulation, including the balances recorded and regulatory developments. • We read relevant regulatory orders issued by the Commission, regulatory statutes, interpretations, procedural memorandums, filings made by interveners, and other publicly available information to assess the likelihood of recovery in future rates based on precedents of the Commission’s treatment of similar costs under similar circumstances. We evaluated the external information and compared it to management’s recorded balances for completeness. • For regulatory matters in process, we inspected the Company’s and intervenors’ filings with the Commission, that may impact the Company’s future rates, for any evidence that might contradict management’s assertions. • We evaluated the reasonableness of management’s judgments regarding the recoverability of regulatory asset balances by performing the following: ˚ We inquired of management regarding changes in regulatory orders and regulatory asset balances during the year. ˚ We evaluated the reasonableness of such changes based on our knowledge of commission-approved amortization, expected incurred costs, and recently approved regulatory orders, as applicable. ˚ We utilized trend analyses to evaluate the historical consistency of regulatory asset balances. ˚ We compared the recorded regulatory asset balance to an independently developed expectation of the corresponding balance. • We obtained representation from management asserting that regulatory assets recorded in the financial statements are probable of recovery. /s/ Deloitte & Touche LLP Charlotte, North Carolina February 27, 2023 We have served as the Company’s auditor since 2001. 83 PART IIDUKE ENERGY FLORIDA, LLC CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (in millions) Operating Revenues Operating Expenses Fuel used in electric generation and purchased power Operation, maintenance and other Depreciation and amortization Property and other taxes Impairment of assets and other charges Total operating expenses Gains on Sales of Other Assets and Other, net Operating Income Other Income and Expenses, net Interest Expense Income Before Income Taxes Income Tax Expense Net Income Other Comprehensive Loss, net of tax Unrealized losses on available-for-sale securities Other Comprehensive Loss, net of tax Comprehensive Income Years Ended December 31, 2022 2021 2020 $ 6,353 $ 5,259 $ 5,188 2,586 967 955 421 4 1,806 1,048 831 383 19 1,737 1,131 702 381 (4) 4,933 4,087 3,947 2 1 1 1,422 74 362 1,134 225 1,173 71 319 925 187 1,242 53 326 969 198 $ 909 $ 738 $ 771 (5) (5) (1) (1) (1) (1) $ 904 $ 737 $ 770 See Notes to Consolidated Financial Statements 84 PART II DUKE ENERGY FLORIDA, LLC CONSOLIDATED BALANCE SHEETS (in millions) ASSETS Current Assets Cash and cash equivalents Receivables (net of allowance for doubtful accounts of $8 at 2022 and 2021) Receivables of VIEs (net of allowance for doubtful accounts of $28 at 2022 and $8 at 2021) Receivables from affiliated companies Inventory Regulatory assets (includes $55 at 2022 and $54 at 2021 related to VIEs) Other (includes $46 at 2022 and $39 at 2021 related to VIEs) Total current assets Property, Plant and Equipment Cost Accumulated depreciation and amortization Net property, plant and equipment Other Noncurrent Assets Regulatory assets (includes $826 at 2022 and $883 at 2021 related to VIEs) Nuclear decommissioning trust funds Operating lease right-of-use assets, net Other Total other noncurrent assets Total Assets LIABILITIES AND EQUITY Current Liabilities Accounts payable Accounts payable to affiliated companies Notes payable to affiliated companies Taxes accrued Interest accrued Current maturities of long-term debt (includes $306 at 2022 and $56 at 2021 related to VIEs) Asset retirement obligations Regulatory liabilities Other Total current liabilities Long-Term Debt (includes $890 at 2022 and $1,196 at 2021 related to VIEs) Other Noncurrent Liabilities Deferred income taxes Asset retirement obligations Regulatory liabilities Operating lease liabilities Accrued pension and other post-retirement benefit costs Investment tax credits Other Total other noncurrent liabilities Commitments and Contingencies Equity Member’s equity Accumulated other comprehensive loss Total equity Total Liabilities and Equity See Notes to Consolidated Financial Statements 85 December 31, 2022 2021 $ 45 148 496 2 573 1,143 108 2,515 $ 23 117 432 16 477 497 80 1,642 25,940 (6,377) 23,865 (5,819) 19,563 18,046 2,422 424 258 372 3,476 1,791 553 302 399 3,045 $ 25,554 $ 22,733 $ 880 177 605 53 80 328 1 244 363 2,731 9,381 2,789 357 633 211 111 234 84 4,419 $ 623 209 199 51 68 76 1 98 408 1,733 8,406 2,434 436 698 256 166 236 73 4,299 9,031 (8) 9,023 8,298 (3) 8,295 $ 25,554 $ 22,733 PART II DUKE ENERGY FLORIDA, LLC CONSOLIDATED STATEMENTS OF CASH FLOWS (in millions) CASH FLOWS FROM OPERATING ACTIVITIES Net income Adjustments to reconcile net income to net cash provided by operating activities: Depreciation, amortization and accretion Equity component of AFUDC Impairment of assets and other charges Deferred income taxes Contributions to qualified pension plans Payments for asset retirement obligations (Increase) decrease in Net realized and unrealized mark-to-market and hedging transactions Receivables Receivables from affiliated companies Inventory Other current assets(a) Increase (decrease) in Accounts payable Accounts payable to affiliated companies Taxes accrued Other current liabilities Other assets(a) Other liabilities Net cash provided by operating activities CASH FLOWS FROM INVESTING ACTIVITIES Capital expenditures Purchases of debt and equity securities Proceeds from sales and maturities of debt and equity securities Notes receivable from affiliated companies Other Net cash used in investing activities CASH FLOWS FROM FINANCING ACTIVITIES Proceeds from the issuance of long-term debt Payments for the redemption of long-term debt Notes payable to affiliated companies Distributions to parent Other Net cash provided by financing activities Net increase (decrease) in cash, cash equivalents and restricted cash Cash, cash equivalents and restricted cash at beginning of period Cash, cash equivalents and restricted cash at end of period Supplemental Disclosures: Cash paid for interest, net of amount capitalized Cash (received from) paid for income taxes Significant non-cash transactions: Accrued capital expenditures (a) Includes approximately $942 million for impacts of under-collected deferred fuel regulatory assets for the year ended December 31, 2022. See Notes to Consolidated Financial Statements 86 Years Ended December 31, 2022 2021 2020 $ 909 $ 738 $ 771 1,032 (16) 4 285 (5) (98) — (93) 14 (98) (640) 202 (32) 2 62 (704) 18 842 (2,247) (193) 279 — (108) (2,269) 1,298 (77) 406 (175) (1) 1,451 24 62 86 339 (83) $ $ 1,011 (16) 19 279 — (101) — (45) (13) (15) (451) 47 124 (30) (7) (69) (69) 1,019 (12) (4) 27 — (80) (14) (64) (3) 26 40 66 (46) 39 (7) 84 (181) 1,402 1,661 (1,923) (302) 408 — (136) (1,953) 1,135 (575) 3 — — 563 12 50 62 308 (15) $ $ (1,907) (4,443) 4,495 173 (103) (1,785) 495 (572) 196 — (1) 118 (6) 56 50 321 138 214 $ $ 394 337 PART II DUKE ENERGY FLORIDA, LLC CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (in millions) Balance at December 31, 2019 Net income Other comprehensive loss Balance at December 31, 2020 Net income Other comprehensive loss Balance at December 31, 2021 Net income Other comprehensive loss Distribution to parent Other Balance at December 31, 2022 See Notes to Consolidated Financial Statements Accumulated Other Comprehensive Income (Loss) Net Unrealized Gains (Losses) on Available-for- Sale Securities Total Equity $ (1) $ 6,788 $ $ — (1) 771 (1) (2) $ 7,558 — (1) 738 (1) (3) $ 8,295 — (5) — — 909 (5) (175) (1) $ (8) $ 9,023 Member’s Equity 6,789 771 — 7,560 738 — 8,298 909 — (175) (1) 9,031 $ $ $ $ 87 PART IIREPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM To the shareholder and the Board of Directors of Duke Energy Ohio, Inc. Opinion on the Financial Statements We have audited the accompanying consolidated balance sheets of Duke Energy Ohio, Inc. and subsidiaries (the “Company”) as of December 31, 2022, and 2021, the related consolidated statements of operations and comprehensive income, changes in equity, and cash flows, for each of the three years in the period ended December 31, 2022, and the related notes (collectively referred to as the “financial statements”). In our opinion, the financial statements present fairly, in all material respects, the financial position of the Company as of December 31, 2022, and 2021, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 2022, in conformity with accounting principles generally accepted in the United States of America. Basis for Opinion These financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion on the Company’s financial statements based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB. We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. The Company is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. As part of our audits, we are required to obtain an understanding of internal control over financial reporting but not for the purpose of expressing an opinion on the effectiveness of the Company’s internal control over financial reporting. Accordingly, we express no such opinion. Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our opinion. Critical Audit Matter The critical audit matter communicated below is a matter arising from the current-period audit of the financial statements that was communicated or required to be communicated to the audit committee and that (1) relates to accounts or disclosures that are material to the financial statements and (2) involved our especially challenging, subjective, or complex judgments. The communication of critical audit matters does not alter in any way our opinion on the financial statements, taken as a whole, and we are not, by communicating the critical audit matter below, providing a separate opinion on the critical audit matter or on the accounts or disclosures to which it relates. Regulatory Matters – Impact of Rate Regulation on the Financial Statements – Refer to Notes 1 and 4 to the financial statements. Critical Audit Matter Description The Company is subject to rate regulation by the Public Utilities Commission of Ohio and by the Kentucky Public Service Commission (collectively the “Commissions”), which have jurisdiction with respect to the electric and natural gas rates of the Company. Management has determined it meets the criteria for the application of regulated operations accounting in preparing its financial statements under accounting principles generally accepted in the United States of America. Significant judgment can be required to determine if otherwise recognizable incurred costs qualify to be presented as a regulatory asset and deferred because such costs are probable of future recovery in customer rates. As of December 31, 2022, the Company has approximately $684 million recorded as regulatory assets. We identified the impact of rate regulation related to regulatory assets as a critical audit matter due to the significant judgments made by management, including assumptions regarding the outcome of future decisions by the Commissions, to support its assertions on the likelihood of future recovery for deferred costs. Given that management’s accounting judgments are based on assumptions about the outcome of future decisions by the Commissions, auditing these judgments required specialized knowledge of accounting for rate regulation and the ratemaking process due to its inherent complexities as it relates to regulatory assets. 88 PART IIHow the Critical Audit Matter Was Addressed in the Audit Our audit procedures related to the recovery of regulatory assets included the following, among others: • We tested the effectiveness of management’s controls over the evaluation of the likelihood of recovery in future rates and the monitoring and evaluation of regulatory developments that may affect the likelihood of recovering costs in future rates. • We evaluated the Company’s disclosures related to the impacts of rate regulation, including the balances recorded and regulatory developments. • We read relevant regulatory orders issued by the Commissions, regulatory statutes, interpretations, procedural memorandums, filings made by interveners, and other publicly available information to assess the likelihood of recovery in future rates based on precedents of the Commissions’ treatment of similar costs under similar circumstances. We evaluated the external information and compared it to management’s recorded balances for completeness. • For regulatory matters in process, we inspected the Company’s and intervenors’ filings with the Commissions, that may impact the Company’s future rates, for any evidence that might contradict management’s assertions. • We evaluated the reasonableness of management’s judgments regarding the recoverability of regulatory asset balances by performing the following: ˚ We inquired of management regarding changes in regulatory orders and regulatory asset balances during the year. ˚ We evaluated the reasonableness of such changes based on our knowledge of commission-approved amortization, expected incurred costs, and recently approved regulatory orders, as applicable. ˚ We utilized trend analyses to evaluate the historical consistency of regulatory asset balances. ˚ We compared the recorded regulatory asset balance to an independently developed expectation of the corresponding balance. • We obtained representation from management asserting that regulatory assets recorded in the financial statements are probable of recovery. /s/ Deloitte & Touche LLP Charlotte, North Carolina February 27, 2023 We have served as the Company’s auditor since 2002. 89 PART IIDUKE ENERGY OHIO, INC. CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (in millions) Operating Revenues Regulated electric Regulated natural gas Total operating revenues Operating Expenses Fuel used in electric generation and purchased power Cost of natural gas Operation, maintenance and other Depreciation and amortization Property and other taxes Impairment of assets and other charges Total operating expenses Gains on Sales of Other Assets and Other, net Operating Income Other Income and Expenses, net Interest Expense Income Before Income Taxes Income Tax (Benefit) Expense Net Income and Comprehensive Income Years Ended December 31, 2022 2021 2020 $ 1,798 716 2,514 $1,493 544 2,037 $1,405 453 1,858 657 261 523 324 369 (10) 409 136 479 307 355 25 339 73 463 278 324 — 2,124 1,711 1,477 1 391 19 129 281 (21) 1 327 18 111 234 30 — 381 16 102 295 43 $ 302 $ 204 $ 252 See Notes to Consolidated Financial Statements 90 PART II DUKE ENERGY OHIO, INC. CONSOLIDATED BALANCE SHEETS (in millions) ASSETS Current Assets Cash and cash equivalents Receivables (net of allowance for doubtful accounts of $6 at 2022 and $4 at 2021) Receivables from affiliated companies Notes receivable from affiliated companies Inventory Regulatory assets Other Total current assets Property, Plant and Equipment Cost Accumulated depreciation and amortization Facilities to be retired, net Net property, plant and equipment Other Noncurrent Assets Goodwill Regulatory assets Operating lease right-of-use assets, net Other Total other noncurrent assets Total Assets LIABILITIES AND EQUITY Current Liabilities Accounts payable Accounts payable to affiliated companies Notes payable to affiliated companies Taxes accrued Interest accrued Current maturities of long-term debt Asset retirement obligations Regulatory liabilities Other Total current liabilities Long-Term Debt Long-Term Debt Payable to Affiliated Companies Other Noncurrent Liabilities Deferred income taxes Asset retirement obligations Regulatory liabilities Operating lease liabilities Accrued pension and other post-retirement benefit costs Other Total other noncurrent liabilities Commitments and Contingencies Equity Common stock, $8.50 par value, 120 million shares authorized; 90 million shares outstanding at 2022 and 2021 Additional paid-in capital Retained earnings Total equity Total Liabilities and Equity See Notes to Consolidated Financial Statements 91 December 31, 2022 2021 $ 16 73 247 — 144 103 86 669 $ 13 96 122 15 116 72 57 491 12,497 (3,250) — 9,247 11,725 (3,106) 6 8,625 920 581 18 71 920 635 19 84 1,590 1,658 $ 11,506 $ 10,774 $ 380 72 497 317 29 475 17 99 74 1,960 2,745 25 1,136 137 534 17 90 96 2,010 762 3,100 904 4,766 $ 348 64 103 275 30 — 13 62 82 977 3,168 25 1,050 123 739 18 109 101 2,140 762 3,100 602 4,464 $ 11,506 $ 10,774 PART II DUKE ENERGY OHIO, INC. CONSOLIDATED STATEMENTS OF CASH FLOWS (in millions) CASH FLOWS FROM OPERATING ACTIVITIES Net income Adjustments to reconcile net income to net cash provided by operating activities: Depreciation, amortization and accretion Equity component of AFUDC Impairment of assets and other charges Deferred income taxes Contributions to qualified pension plans Payments for asset retirement obligations Provision for rate refunds (Increase) decrease in Receivables Receivables from affiliated companies Inventory Other current assets Increase (decrease) in Accounts payable Accounts payable to affiliated companies Taxes accrued Other current liabilities Other assets Other liabilities Net cash provided by operating activities CASH FLOWS FROM INVESTING ACTIVITIES Capital expenditures Notes receivable from affiliated companies Other Net cash used in investing activities CASH FLOWS FROM FINANCING ACTIVITIES Proceeds from the issuance of long-term debt Payments for the redemption of long-term debt Notes payable to affiliated companies Capital contribution from parent Other Net cash provided by financing activities Net increase (decrease) in cash and cash equivalents Cash and cash equivalents at beginning of period Cash and cash equivalents at end of period Supplemental Disclosures: Cash paid for interest, net of amount capitalized Cash (received from) paid for income taxes Significant non-cash transactions: Accrued capital expenditures See Notes to Consolidated Financial Statements 92 Years Ended December 31, 2022 2021 2020 $ 302 $ 204 $ 252 328 (7) (10) (22) (3) (12) 5 23 (5) (28) (55) 44 8 42 (63) (29) 64 582 (850) (105) (67) (1,022) 50 — 395 — (2) 443 3 13 16 126 (35) 123 $ $ 311 (7) 25 42 — (2) 16 6 (25) (6) (60) 38 (4) 26 11 (43) 27 559 (848) (10) (60) (918) 150 (50) (67) 325 — 358 (1) 14 13 107 9 135 $ $ 283 (7) — 31 — (2) 14 (13) 9 25 (18) 2 — 30 3 (32) (2) 575 (834) (19) (48) (901) 467 — (144) — — 323 (3) 17 14 97 — 104 $ $ PART II DUKE ENERGY OHIO, INC. CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (in millions) Balance at December 31, 2019 Net income Balance at December 31, 2020 Net income Contribution from parent Other Balance at December 31, 2021 Net income Balance at December 31, 2022 See Notes to Consolidated Financial Statements Common Stock Additional Paid-in Capital Retained Earnings Total Equity 762 $ 2,776 $ 145 $ 3,683 — — 762 $ 2,776 $ — — — — 325 (1) 762 $ 3,100 — — 762 $ 3,100 $ $ 252 397 204 — 1 602 302 904 252 $ 3,935 204 325 — $ 4,464 302 $ 4,766 $ $ $ $ 93 PART IIREPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM To the shareholder and the Board of Directors of Duke Energy Indiana, LLC Opinion on the Financial Statements We have audited the accompanying consolidated balance sheets of Duke Energy Indiana, LLC and subsidiary (the “Company”) as of December 31, 2022, and 2021, the related consolidated statements of operations and comprehensive income, changes in equity, and cash flows, for each of the three years in the period ended December 31, 2022, and the related notes (collectively referred to as the “financial statements”). In our opinion, the financial statements present fairly, in all material respects, the financial position of the Company as of December 31, 2022, and 2021, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 2022, in conformity with accounting principles generally accepted in the United States of America. Basis for Opinion These financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion on the Company’s financial statements based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB. We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. The Company is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. As part of our audits, we are required to obtain an understanding of internal control over financial reporting but not for the purpose of expressing an opinion on the effectiveness of the Company’s internal control over financial reporting. Accordingly, we express no such opinion. Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our opinion. Critical Audit Matter The critical audit matter communicated below is a matter arising from the current-period audit of the financial statements that was communicated or required to be communicated to the audit committee and that (1) relates to accounts or disclosures that are material to the financial statements and (2) involved our especially challenging, subjective, or complex judgments. The communication of critical audit matters does not alter in any way our opinion on the financial statements, taken as a whole, and we are not, by communicating the critical audit matter below, providing a separate opinion on the critical audit matter or on the accounts or disclosures to which it relates. Regulatory Matters – Impact of Rate Regulation on the Financial Statements – Refer to Notes 1, 4 and 10 to the financial statements. Critical Audit Matter Description The Company is subject to rate regulation by the Indiana Utility Regulatory Commission (the “Commission”), which has jurisdiction with respect to the electric rates of the Company. Management has determined it meets the criteria for the application of regulated operations accounting in preparing its financial statements under accounting principles generally accepted in the United States of America. Significant judgment can be required to determine if otherwise recognizable incurred costs qualify to be presented as a regulatory asset and deferred because such costs are probable of future recovery in customer rates. As discussed in Note 4, regulatory proceedings in recent years in Indiana have focused on the recoverability of fuel costs and asset retirement obligations specific to coal ash. As a result, assessing the potential outcomes of future regulatory orders requires significant management judgment. As of December 31, 2022, the Company has approximately $1.1 billion recorded as regulatory assets. We identified the impact of rate regulation related to regulatory assets as a critical audit matter due to the significant judgments made by management, including assumptions regarding the outcome of future decisions by the Commission, to support its assertions on the likelihood of future recovery for deferred costs. Given that management’s accounting judgments are based on assumptions about the outcome of future decisions by the Commission, auditing these judgments required specialized knowledge of accounting for rate regulation and the ratemaking process due to its inherent complexities as it relates to regulatory assets. 94 PART IIHow the Critical Audit Matter Was Addressed in the Audit Our audit procedures related to the recovery of regulatory assets included the following, among others: • We tested the effectiveness of management’s controls over the evaluation of the likelihood of the recovery in future rates and the monitoring and evaluation of regulatory developments that may affect the likelihood of recovering costs in future rates. • We evaluated the Company’s disclosures related to the impacts of rate regulation, including the balances recorded and regulatory developments. • We read relevant regulatory orders issued by the Commission, regulatory statutes, interpretations, procedural memorandums, filings made by interveners, and other publicly available information to assess the likelihood of recovery in future rates based on precedents of the Commission’s treatment of similar costs under similar circumstances. We evaluated the external information and compared it to management’s recorded balances for completeness. • For regulatory matters in process, we inspected the Company’s and intervenors’ filings with the Commission, that may impact the Company’s future rates, for any evidence that might contradict management’s assertions. • We evaluated the reasonableness of management’s judgments regarding the recoverability of regulatory asset balances by performing the following: ˚ We inquired of management regarding changes in regulatory orders and regulatory asset balances during the year. ˚ We evaluated the reasonableness of such changes based on our knowledge of commission-approved amortization, expected incurred costs, and recently approved regulatory orders, as applicable. ˚ We utilized trend analyses to evaluate the historical consistency of regulatory asset balances. ˚ We compared the recorded regulatory asset balance to an independently developed expectation of the corresponding balance. • We obtained an analysis from management and letters from internal legal counsel for asset retirement obligations specific to coal ash costs, regarding probability of recovery for deferred costs not yet addressed in a regulatory order to assess management’s assertion that amounts are probable of recovery. • We obtained representation from management asserting that regulatory assets recorded in the financial statements are probable of recovery. /s/ Deloitte & Touche LLP Charlotte, North Carolina February 27, 2023 We have served as the Company’s auditor since 2002. 95 PART IIDUKE ENERGY INDIANA, LLC CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (in millions) Operating Revenues Operating Expenses Fuel used in electric generation and purchased power Operation, maintenance and other Depreciation and amortization Property and other taxes Impairment of assets and other charges Total operating expenses Operating Income Other Income and Expenses, net Interest Expense Income Before Income Taxes Income Tax (Benefit) Expense Net Income and Comprehensive Income See Notes to Consolidated Financial Statements Years Ended December 31, 2022 2021 2020 $ 3,922 $ 3,174 $ 2,795 1,819 729 645 75 388 3,656 266 36 189 113 (24) 985 750 615 73 9 767 762 569 81 — 2,432 2,179 742 42 196 588 107 616 37 161 492 84 $ 137 $ 481 $ 408 96 PART II DUKE ENERGY INDIANA, LLC CONSOLIDATED BALANCE SHEETS (in millions) ASSETS Current Assets Cash and cash equivalents Receivables (net of allowance for doubtful accounts of $4 at 2022 and $3 at 2021) Receivables from affiliated companies Notes receivable from affiliated companies Inventory Regulatory assets Other Total current assets Property, Plant and Equipment Cost Accumulated depreciation and amortization Net property, plant and equipment Other Noncurrent Assets Regulatory assets Operating lease right-of-use assets, net Other Total other noncurrent assets Total Assets LIABILITIES AND EQUITY Current Liabilities Accounts payable Accounts payable to affiliated companies Notes payable to affiliated companies Taxes accrued Interest accrued Current maturities of long-term debt Asset retirement obligations Regulatory liabilities Other Total current liabilities Long-Term Debt Long-Term Debt Payable to Affiliated Companies Other Noncurrent Liabilities Deferred income taxes Asset retirement obligations Regulatory liabilities Operating lease liabilities Accrued pension and other post-retirement benefit costs Investment tax credits Other Total other noncurrent liabilities Commitments and Contingencies Equity Member’s equity Accumulated other comprehensive income Total equity Total Liabilities and Equity See Notes to Consolidated Financial Statements 97 December 31, 2022 2021 $ 31 112 298 — 489 249 197 $ 6 100 98 134 418 277 68 1,376 1,101 18,121 (6,021) 12,100 875 49 254 1,178 17,343 (5,583) 11,760 1,278 53 296 1,627 $ 14,654 $ 14,488 $ 391 206 435 92 48 303 207 187 161 2,030 3,854 150 1,299 744 1,454 47 122 186 65 3,917 4,702 1 4,703 $ 282 221 — 73 49 84 110 127 105 1,051 4,089 150 1,303 877 1,565 50 167 177 44 4,183 5,015 — 5,015 $ 14,654 $ 14,488 PART II DUKE ENERGY INDIANA, LLC CONSOLIDATED STATEMENTS OF CASH FLOWS (in millions) CASH FLOWS FROM OPERATING ACTIVITIES Net income Adjustments to reconcile net income to net cash provided by operating activities: Depreciation, amortization and accretion Equity component of AFUDC Impairment of assets and other charges Deferred income taxes Contributions to qualified pension plans Payments for asset retirement obligations (Increase) decrease in Receivables Receivables from affiliated companies Inventory Other current assets Increase (decrease) in Accounts payable Accounts payable to affiliated companies Taxes accrued Other current liabilities Other assets Other liabilities Net cash provided by operating activities CASH FLOWS FROM INVESTING ACTIVITIES Capital expenditures Purchases of debt and equity securities Proceeds from sales and maturities of debt and equity securities Notes receivable from affiliated companies Other Net cash used in investing activities CASH FLOWS FROM FINANCING ACTIVITIES Proceeds from the issuance of long-term debt Payments for the redemption of long-term debt Notes payable to affiliated companies Distributions to parent Other Net cash used in financing activities Net increase (decrease) in cash and cash equivalents Cash and cash equivalents at beginning of period Cash and cash equivalents at end of period Supplemental Disclosures: Cash paid for interest, net of amount capitalized Cash paid for income taxes Significant non-cash transactions: Accrued capital expenditures See Notes to Consolidated Financial Statements 98 Years Ended December 31, 2022 2021 2020 $ 137 $ 481 $ 408 648 (13) 388 (64) (5) (82) (3) 20 (70) (3) 105 (3) 34 9 (10) 13 619 (27) 9 34 — (67) (33) — 55 (181) 76 8 12 13 20 (15) 1,101 1,004 (877) (61) 48 (86) (55) (1,031) 67 (84) 435 (462) (1) (45) 25 6 31 186 35 122 $ $ (818) (142) 65 (120) 36 (979) 300 (70) (131) (125) — (26) (1) 7 6 194 56 118 $ $ 572 (23) — 29 — (63) 8 — 44 (3) (12) 1 13 6 (68) 26 938 (888) (37) 22 (33) 48 (888) 544 (513) 101 (200) — (68) (18) 25 7 164 36 101 $ $ PART II DUKE ENERGY INDIANA, LLC CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (in millions) Balance at December 31, 2019 Net income Distributions to parent Balance at December 31, 2020 Net income Distributions to parent Other Balance at December 31, 2021 Net income Distributions to parent Other Balance at December 31, 2022 See Notes to Consolidated Financial Statements Accumulated Other Comprehensive Income Pension and OPEB Adjustments $ — — — Total Equity $ 4,575 408 (200) $ — $ 4,783 — — — 481 (250) 1 — $ 5,015 — — 1 1 137 (450) 1 $ 4,703 $ $ $ $ Member’s Equity 4,575 408 (200) 4,783 481 (250) 1 $ 5,015 137 (450) — $ 4,702 99 PART IIREPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM To the shareholder and the Board of Directors of Piedmont Natural Gas Company, Inc. Opinion on the Financial Statements We have audited the accompanying consolidated balance sheets of Piedmont Natural Gas Company, Inc. and subsidiaries (the “Company”) as of December 31, 2022, and 2021, the related consolidated statements of operations and comprehensive income, changes in equity, and cash flows, for each of the three years in the period ended December 31, 2022, and the related notes (collectively referred to as the “financial statements”). In our opinion, the financial statements present fairly, in all material respects, the financial position of the Company as of December 31, 2022, and 2021, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 2022, in conformity with accounting principles generally accepted in the United States of America. Basis for Opinion These financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion on the Company’s financial statements based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB. We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. The Company is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. As part of our audits, we are required to obtain an understanding of internal control over financial reporting but not for the purpose of expressing an opinion on the effectiveness of the Company’s internal control over financial reporting. Accordingly, we express no such opinion. Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our opinion. Critical Audit Matter The critical audit matter communicated below is a matter arising from the current-period audit of the financial statements that was communicated or required to be communicated to the audit committee and that (1) relates to accounts or disclosures that are material to the financial statements and (2) involved our especially challenging, subjective, or complex judgments. The communication of critical audit matters does not alter in any way our opinion on the financial statements, taken as a whole, and we are not, by communicating the critical audit matter below, providing a separate opinion on the critical audit matter or on the accounts or disclosures to which it relates. Regulatory Matters – Impact of Rate Regulation on the Financial Statements – Refer to Notes 1 and 4 to the financial statements. Critical Audit Matter Description The Company is subject to rate regulation by the North Carolina Utilities Commission, the Public Service Commission of South Carolina, and the Tennessee Public Utility Commission (collectively the “Commissions”), which have jurisdiction with respect to the gas rates of the Company. Management has determined it meets the criteria for the application of regulated operations accounting in preparing its financial statements under accounting principles generally accepted in the United States of America. Significant judgment can be required to determine if otherwise recognizable incurred costs qualify to be presented as a regulatory asset and deferred because such costs are probable of future recovery in customer rates. As of December 31, 2022, the Company has approximately $511 million recorded as regulatory assets. We identified the impact of rate regulation related to regulatory assets as a critical audit matter due to the significant judgments made by management, including assumptions regarding the outcome of future decisions by the Commissions, to support its assertions on the likelihood of future recovery for deferred costs. Given that management’s accounting judgments are based on assumptions about the outcome of future decisions by the Commissions, auditing these judgments required specialized knowledge of accounting for rate regulation and the ratemaking process due to its inherent complexities as it relates to regulatory assets. How the Critical Audit Matter Was Addressed in the Audit Our audit procedures related to the recovery of regulatory assets included the following, among others: • We tested the effectiveness of management’s controls over the evaluation of the likelihood of recovery in future rates and the monitoring and evaluation of regulatory developments that may affect the likelihood of recovering costs in future rates. • We evaluated the Company’s disclosures related to the impacts of rate regulation, including the balances recorded and regulatory developments. 100 PART II• We read relevant regulatory orders issued by the Commission, regulatory statutes, interpretations, procedural memorandums, filings made by interveners, and other publicly available information to assess the likelihood of recovery in future rates based on precedents of the Commissions’ treatment of similar costs under similar circumstances. We evaluated the external information and compared it to management’s recorded balances for completeness. • For regulatory matters in process, we inspected the Company’s and intervenors’ filings with the Commissions, that may impact the Company’s future rates, for any evidence that might contradict management’s assertions. • We evaluated the reasonableness of management’s judgments regarding the recoverability of regulatory asset balances by performing the following: ˚ We inquired of management regarding changes in regulatory orders and regulatory asset balances during the year. ˚ We evaluated the reasonableness of such changes based on our knowledge of commission-approved amortization, expected incurred costs, and recently approved regulatory orders, as applicable. ˚ We utilized trend analyses to evaluate the historical consistency of regulatory asset balances. ˚ We compared the recorded regulatory asset balance to an independently developed expectation of the corresponding balance. • We obtained representation from management asserting that regulatory assets recorded in the financial statements are probable of recovery. /s/ Deloitte & Touche LLP Charlotte, North Carolina February 27, 2023 We have served as the Company’s auditor since 1951. 101 PART IIPIEDMONT NATURAL GAS COMPANY, INC. CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (in millions) Operating Revenues Regulated natural gas Nonregulated natural gas and other Total operating revenues Operating Expenses Cost of natural gas Operation, maintenance and other Depreciation and amortization Property and other taxes Impairment of assets and other charges Total operating expenses Gains on Sales of Other Assets and Other, net Operating Income Equity in earnings of unconsolidated affiliates Other income and expense, net Total other income and expenses Interest Expense Income Before Income Taxes Income Tax Expense Net Income and Comprehensive Income Years Ended December 31, 2022 2021 2020 $ 2,100 24 $ 1,555 14 $ 1,286 11 2,124 1,569 1,297 1,015 368 222 57 18 1,680 4 448 8 46 54 140 362 39 323 $ 569 327 213 55 10 1,174 — 395 9 55 64 119 340 30 310 $ 386 322 180 53 7 948 — 349 9 51 60 118 291 18 273 $ See Notes to Consolidated Financial Statements 102 PART II PIEDMONT NATURAL GAS COMPANY, INC. CONSOLIDATED BALANCE SHEETS (in millions) ASSETS Current Assets Receivables (net of allowance for doubtful accounts of $14 at 2022 and $15 at 2021) Receivables from affiliated companies Inventory Regulatory assets Other Total current assets Property, Plant and Equipment Cost Accumulated depreciation and amortization Facilities to be retired, net Net property, plant and equipment Other Noncurrent Assets Goodwill Regulatory assets Operating lease right-of-use assets, net Investments in equity method unconsolidated affiliates Other Total other noncurrent assets Total Assets LIABILITIES AND EQUITY Current Liabilities Accounts payable Accounts payable to affiliated companies Notes payable to affiliated companies Taxes accrued Interest accrued Current maturities of long-term debt Regulatory liabilities Other Total current liabilities Long-Term Debt Other Noncurrent Liabilities Deferred income taxes Asset retirement obligations Regulatory liabilities Operating lease liabilities Accrued pension and other post-retirement benefit costs Other Total other noncurrent liabilities Commitments and Contingencies Equity Common stock, no par value: 100 shares authorized and outstanding at 2022 and 2021 Retained earnings Total Piedmont Natural Gas Company, Inc. stockholder’s equity Noncontrolling interests Total equity Total Liabilities and Equity See Notes to Consolidated Financial Statements 103 December 31, 2022 2021 $ 436 11 172 119 4 742 10,869 (2,081) 9 8,797 49 392 4 79 272 796 $ 318 11 109 141 9 588 9,918 (1,899) 11 8,030 49 316 16 95 288 764 $10,335 $ 9,382 $ 345 51 514 74 40 45 74 81 1,224 3,318 870 26 1,024 13 7 180 2,120 1,635 2,037 3,672 1 3,673 $ 196 40 518 63 37 — 56 81 991 2,968 815 22 1,058 14 7 158 2,074 1,635 1,714 3,349 — 3,349 $10,335 $ 9,382 PART II PIEDMONT NATURAL GAS COMPANY, INC. CONSOLIDATED STATEMENTS OF CASH FLOWS (in millions) CASH FLOWS FROM OPERATING ACTIVITIES Net income Adjustments to reconcile net income to net cash provided by operating activities: Depreciation and amortization Equity component of AFUDC Gains on sales of other assets Impairment of assets and other charges Deferred income taxes Contributions to qualified pension plans Equity in earnings from unconsolidated affiliates Provision for rate refunds (Increase) decrease in Receivables Receivables from affiliated companies Inventory Other current assets Increase (decrease) in Accounts payable Accounts payable to affiliated companies Taxes accrued Other current liabilities Other assets Other liabilities Net cash provided by operating activities CASH FLOWS FROM INVESTING ACTIVITIES Capital expenditures Contributions to equity method investments Other Net cash used in investing activities CASH FLOWS FROM FINANCING ACTIVITIES Proceeds from the issuance of long-term debt Payments for the redemption of long-term debt Notes payable to affiliated companies Capital contribution from parent Other Net cash provided by financing activities Net increase (decrease) in cash and cash equivalents Cash and cash equivalents at beginning of period Cash and cash equivalents at end of period Supplemental Disclosures: Cash paid for interest, net of amount capitalized Cash paid for (received from) income taxes Significant non-cash transactions: Accrued capital expenditures See Notes to Consolidated Financial Statements 104 Years Ended December 31, 2022 2021 2020 $ 323 $ 310 $ 273 225 (11) (4) 18 5 (2) (8) (3) (111) — (63) 32 40 11 11 36 9 (1) 216 (20) — 10 4 — (9) (4) (77) (1) (40) 33 (25) (39) 37 (26) 26 (4) 182 (19) — 7 53 — (9) (33) 10 — 3 (66) 16 76 3 (11) (11) 7 507 391 481 (862) (8) (26) (896) 394 — (4) — (1) 389 — — (850) (9) (31) (890) 347 (160) (13) 325 — 499 — — (901) — (28) (929) 394 — 54 — — 448 — — $ — $ — $ — $ 135 23 $ 114 (13) $ 207 97 115 (36) 106 PART II PIEDMONT NATURAL GAS COMPANY, INC. CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (in millions) Balance at December 31, 2019 Net income Other Balance at December 31, 2020 Net income Contribution from parent Other Balance at December 31, 2021 Net income Other Balance at December 31, 2022 Total Piedmont Natural Gas Company, Inc. Equity Common Stock Retained Earnings Noncontrolling Interests Total Equity $ 1,310 $ 1,133 $ 2,443 $ — $ 2,443 — — 273 (1) 273 (1) — — 273 (1) $ 1,310 $ 1,405 $ 2,715 $ — $ 2,715 — 325 — 310 — (1) 310 325 (1) — — — 310 325 (1) $ 1,635 $ 1,714 $ 3,349 $ — $ 3,349 — — 323 — 323 — $ 1,635 $ 2,037 $ 3,672 $ — 1 1 323 1 $ 3,673 See Notes to Consolidated Financial Statements 105 PART II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. Combined Notes to Consolidated Financial Statements For the Years Ended December 31, 2022, 2021 and 2020 Index to Combined Notes To Consolidated Financial Statements The notes to the consolidated financial statements are a combined presentation. The following table indicates the registrants to which the notes apply. Applicable Notes Registrant Duke Energy Duke Energy Carolinas Progress Energy Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana Piedmont 8 • 1 • • • • • • • • 2 • • 3 • • • • • • • • 4 • • • • • • • • 5 • • • • • • • • 6 • • • • • • • • 7 • • • • • • • • 9 • • • 10 11 12 • • • • • • • • • • • • • • • • • • • • • • • • 13 • • 14 15 16 17 18 19 • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • 20 • 21 22 23 24 25 26 • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • 27 • 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. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES NATURE OF OPERATIONS AND BASIS OF CONSOLIDATION Duke Energy is an energy company headquartered in Charlotte, North Carolina, subject to regulation by the FERC and other regulatory agencies listed below. Duke Energy operates in the U.S. primarily through its direct and indirect subsidiaries. Certain Duke Energy subsidiaries are also subsidiary registrants, including Duke Energy Carolinas; Progress Energy; 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 its separate Subsidiary Registrants, which along with Duke Energy, are collectively referred to as the Duke Energy Registrants. The information in these combined notes relates to each of the Duke Energy Registrants as noted in the Index to Combined Notes to Consolidated Financial Statements. However, none of the Subsidiary Registrants make any representation as to information related solely to Duke Energy or the Subsidiary Registrants of Duke Energy other than itself. These 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 18 for additional information on VIEs. These Consolidated Financial Statements also reflect the Duke Energy Registrants’ proportionate share of certain jointly owned generation and transmission facilities. See Note 9 for additional information on joint ownership. Substantially all of the Subsidiary Registrants’ operations qualify for regulatory accounting. Duke Energy Carolinas is a regulated public utility primarily engaged in the generation, transmission, distribution and sale of electricity in portions of North Carolina and South Carolina. Duke Energy Carolinas is subject to the regulatory provisions of the NCUC, PSCSC, NRC and FERC. Progress Energy is a public utility holding company, which conducts operations through its wholly owned subsidiaries, Duke Energy Progress and Duke Energy Florida. Progress Energy is subject to regulation by FERC and other regulatory agencies listed below. Duke Energy Progress is a regulated public utility primarily engaged in the generation, transmission, distribution and sale of electricity in portions of North Carolina and South Carolina. Duke Energy Progress is subject to the regulatory provisions of the NCUC, PSCSC, NRC and FERC. Duke Energy Florida is a regulated public utility primarily engaged in the generation, transmission, distribution and sale of electricity in portions of Florida. Duke Energy Florida is subject to the regulatory provisions of the FPSC, NRC and FERC. Duke Energy Ohio is a regulated public utility primarily engaged in the transmission and distribution of electricity in portions of Ohio and Kentucky, the generation and sale of electricity in portions of Kentucky and the transportation and sale of natural gas in portions of Ohio and Kentucky. Duke Energy Ohio conducts competitive auctions for retail electricity supply in Ohio whereby the energy price is recovered from retail customers and recorded in Operating Revenues on the Consolidated Statements of Operations and Comprehensive Income. Operations in Kentucky are conducted through its wholly owned subsidiary, Duke Energy Kentucky. References herein to Duke Energy Ohio collectively include Duke Energy Ohio and its subsidiaries, unless otherwise noted. Duke Energy Ohio is subject to the regulatory provisions of the PUCO, KPSC and FERC. Duke Energy Indiana is a regulated public utility primarily engaged in the generation, transmission, distribution and sale of electricity in portions of Indiana. Duke Energy Indiana is subject to the regulatory provisions of the IURC and FERC. Piedmont is a regulated public utility primarily engaged in the distribution of natural gas in portions of North Carolina, South Carolina and Tennessee. Piedmont is subject to the regulatory provisions of the NCUC, PSCSC, TPUC and FERC. Certain prior year amounts have been reclassified to conform to the current year presentation. 106 PART IIOther Current Assets and Liabilities SIGNIFICANT ACCOUNTING POLICIES The following table provides a description of amounts included in Other within Current Assets or Current Liabilities that exceed 5% of total Current Assets or Current Liabilities on the Duke Energy Registrants’ Consolidated Balance Sheets at either December 31, 2022, or 2021. (in millions) Location 2022 2021 December 31, Use of Estimates In preparing financial statements that conform to GAAP, the Duke Energy Registrants 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. Regulatory Accounting The majority of the Duke Energy Registrants’ operations are subject to price regulation for the sale of electricity and natural gas by state utility commissions or FERC. When prices are set on the basis of specific costs of the regulated operations and an effective franchise is in place such that sufficient natural gas or electric services can be sold to recover those costs, the Duke Energy Registrants apply regulatory accounting. Regulatory accounting changes the timing of the recognition of costs or revenues relative to a company that does not apply regulatory accounting. As a result, regulatory assets and regulatory liabilities are recognized on the Consolidated Balance Sheets. Regulatory assets and liabilities are amortized consistent with the treatment of the related cost in the ratemaking process. Regulatory assets are reviewed for recoverability each reporting period. If a regulatory asset is no longer deemed probable of recovery, the deferred cost is charged to earnings. See Note 4 for further information. Regulatory accounting rules also require recognition of a disallowance (also called “impairment”) loss if it becomes probable that part of the cost of a plant under construction (or a recently completed plant or an abandoned plant) will be disallowed for ratemaking purposes and a reasonable estimate of the amount of the disallowance can be made. For example, if a cost cap is set for a plant still under construction, the amount of the disallowance is a result of a judgment as to the ultimate cost of the plant. These disallowances can require judgments on allowed future rate recovery. When it becomes probable that regulated generation, transmission or distribution assets will be abandoned, the cost of the asset is removed from plant in service. The value that may be retained as a regulatory asset on the balance sheet for the abandoned property is dependent upon amounts that may be recovered through regulated rates, including any return. As such, an impairment charge could be partially or fully offset by the establishment of a regulatory asset if rate recovery is probable. The impairment charge for a disallowance of costs for regulated plants under construction, recently completed or abandoned is based on discounted cash flows. The Duke Energy Registrants utilize cost-tracking mechanisms, commonly referred to as fuel adjustment clauses or PGA clauses. These clauses allow for the recovery of fuel and fuel-related costs, portions of purchased power, natural gas costs and hedging costs through surcharges on customer rates. The difference between the costs incurred and the surcharge revenues is recorded either as an adjustment to Operating Revenues, Operating Expenses – Fuel used in electric generation or Operating Expenses – Cost of natural gas on the Consolidated Statements of Operations, with an off-setting impact on regulatory assets or liabilities. Current Liabilities Current Liabilities Current Liabilities Current Liabilities Duke Energy Accrued compensation Duke Energy Carolinas Accrued compensation Duke Energy Progress Customer deposits Other accrued liabilities Duke Energy Florida Customer deposits Other accrued liabilities Duke Energy Ohio Gas Storage Collateral liabilities Duke Energy Indiana Mark-to-market transactions Current Assets Current Liabilities Current Liabilities Current Assets Current Liabilities $ $ $ $ $ $ 778 247 106 124 200 61 57 53 110 $ $ $ $ $ $ 915 277 144 163 200 89 25 57 23 Discontinued Operations Duke Energy has elected to present cash flows of discontinued operations combined with cash flows of continuing operations. Unless otherwise noted, the notes to these consolidated financial statements exclude amounts related to discontinued operations for all periods presented. For the years ended December 31, 2022, 2021 and 2020, the Loss From Discontinued Operations, net of tax on Duke Energy’s Consolidated Statements of Operations includes amounts related to noncontrolling interests. A portion of Noncontrolling interests on Duke Energy’s Consolidated Balance Sheets relates to discontinued operations for the periods presented. See Note 2 for discussion of discontinued operations related to the Commercial Renewables Disposal Groups. Noncontrolling Interest Duke Energy maintains a controlling financial interest in certain less than wholly owned regulated and 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 Consolidated Balance Sheet. 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. 107 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued) Cash, Cash Equivalents and Restricted Cash All highly liquid investments with maturities of three months or less at the date of acquisition are considered cash equivalents. Duke Energy, Progress Energy and Duke Energy Florida have restricted cash balances related primarily to collateral assets, escrow deposits and VIEs. Duke Energy Carolinas and Duke Energy Progress have restricted cash balances related to VIEs from storm recovery bonds issued. See Note 18 for additional information. Restricted cash amounts are included in Other within Current Assets and Other Noncurrent Assets on the Consolidated Balance Sheets. The following table presents the components of cash, cash equivalents and restricted cash included in the Consolidated Balance Sheets. Current Assets Cash and cash equivalents Other Other Noncurrent Assets Other Total cash, cash equivalents and restricted cash Current Assets Cash and cash equivalents Other Other Noncurrent Assets Other Total cash, cash equivalents and restricted cash December 31, 2022 Duke Energy Carolinas Progress Energy Duke Energy Progress $ $ 44 8 1 53 $ 108 74 2 $ 49 28 2 $ 184 $ 79 December 31, 2021 Duke Energy Carolinas Progress Energy Duke Energy Progress $ $ 7 — 1 8 $ 70 39 4 $ 35 — 4 $ 113 $ 39 Duke Energy Florida $ 45 41 — $ 86 Duke Energy Florida $ 23 39 — $ 62 Duke Energy $ 409 173 11 $ 593 Duke Energy $ 341 170 6 $ 517 Inventory Inventory related to regulated operations is valued at historical cost. Inventory related to nonregulated operations is valued at the lower of cost or market. Inventory is charged to expense or capitalized to property, plant and equipment when issued, primarily using the average cost method. Excess or obsolete inventory is written down to the lower of cost or net realizable value. Once inventory has been written down, it creates a new cost basis for the inventory that is not subsequently written up. Provisions for inventory write- offs were not material at December 31, 2022, and 2021, respectively. The components of inventory are presented in the tables below. (in millions) Materials and supplies Coal Natural gas, oil and other Total inventory December 31, 2022 Duke Energy $ 2,604 620 360 $ 3,584 Duke Energy Carolinas $ 876 253 35 $ 1,164 Progress Energy $ 1,232 190 157 $ 1,579 Duke Energy Progress $ 819 99 88 $ 1,006 Duke Energy Florida $ 413 91 69 $ 573 Duke Energy Ohio $ 105 34 5 $ 144 Duke Energy Indiana $ 342 144 3 $ 489 Piedmont $ 12 — 160 $ 172 108 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued) (in millions) Materials and supplies Coal Natural gas, oil and other Total inventory December 31, 2021 Duke Energy $ 2,309 486 316 $ 3,111 Duke Energy Carolinas $ 793 195 38 $ 1,026 Progress Energy $ 1,067 167 164 $ 1,398 Duke Energy Progress $ 729 94 98 $ 921 Duke Energy Florida $ 338 73 66 $ 477 Duke Energy Ohio $ 80 19 17 $ 116 Duke Energy Indiana $ 311 105 2 $ 418 Piedmont $ 14 — 95 $ 109 Investments in Debt and Equity Securities The Duke Energy Registrants classify investments in equity securities as FV-NI and investments in debt securities as AFS. Both categories are recorded at fair value on the Consolidated Balance Sheets. Realized and unrealized gains and losses on securities classified as FV-NI are reported through net income. Unrealized gains and losses for debt securities classified as AFS are included in AOCI until realized, unless it is determined the carrying value of an investment has a credit loss. For certain investments of regulated operations, such as substantially all of the NDTF, realized and unrealized gains and losses (including any credit losses) on debt securities are recorded as a regulatory asset or liability. The credit loss portion of debt securities of nonregulated operations are included in earnings. Investments in debt and equity securities are classified as either current or noncurrent based on management’s intent and ability to sell these securities, taking into consideration current market liquidity. See Note 16 for further information. Goodwill Duke Energy, Progress Energy, Duke Energy Ohio and Piedmont perform annual goodwill impairment tests as of August 31 each year at the reporting unit level, which is determined to be a business segment or one level below. Duke Energy, Progress Energy, Duke Energy Ohio and Piedmont update these tests between annual tests if events or circumstances occur that would more likely than not reduce the fair value of a reporting unit below its carrying value. See Note 12 for further information. Intangible Assets Intangible assets are included in Other in Other Noncurrent Assets on the Consolidated Balance Sheets. Generally, intangible assets are amortized using an amortization method that reflects the pattern in which the economic benefits of the intangible asset are consumed or on a straight-line basis if that pattern is not readily determinable. Amortization of intangibles is reflected in Depreciation and amortization on the Consolidated Statements of Operations. Intangible assets are subject to impairment testing and if impaired, the carrying value is accordingly reduced. RECs are used to measure compliance with renewable energy standards and are held primarily for consumption. See Note 12 for further information. that are probability weighted. If the carrying value of the long-lived asset is not recoverable based on these estimated future undiscounted cash flows, the carrying value of the asset is written down to its then current estimated fair value and an impairment charge is recognized. The Duke Energy Registrants assess fair value of long-lived assets that are held and used using various methods, including recent comparable third- party sales, internally developed discounted cash flow analysis and analysis from outside advisors. Triggering events to reassess cash flows may include, but are not limited to, significant changes in commodity prices, the condition of an asset or management’s interest in selling the asset. Property, Plant and Equipment Property, plant and equipment are stated at the lower of depreciated historical cost net of any disallowances or fair value, if impaired. The Duke Energy Registrants capitalize all construction-related direct labor and material costs, as well as indirect construction costs such as general engineering, taxes and financing costs. See “Allowance for Funds Used During Construction and Interest Capitalized” section below for information on capitalized financing costs. Costs of renewals and betterments that extend the useful life of property, plant and equipment are also capitalized. The cost of repairs, replacements and major maintenance projects, which do not extend the useful life or increase the expected output of the asset, are expensed as incurred. Depreciation is generally computed over the estimated useful life of the asset using the composite straight-line method. Depreciation studies are conducted periodically to update composite rates and are approved by state utility commissions and/or the FERC when required. The composite weighted average depreciation rates, excluding nuclear fuel, are included in the table that follows. Duke Energy Duke Energy Carolinas Progress Energy Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana Piedmont Years Ended December 31, 2022 3.0 % 2.7 % 3.2 % 3.0 % 3.5 % 2.9 % 3.6 % 2.1 % 2021 2.9% 2.7% 3.1% 3.0% 3.3% 2.9% 3.6% 2.1% 2020 3.0% 2.8% 3.2% 3.1% 3.3% 2.9% 3.5% 2.3% Long-Lived Asset Impairments The Duke Energy Registrants evaluate long-lived assets that are held and used, excluding goodwill, for impairment when circumstances indicate the carrying value of those assets may not be recoverable. An impairment exists when a long-lived asset’s carrying value exceeds the estimated undiscounted cash flows expected to result from the use and eventual disposition of the asset. The estimated cash flows may be based on alternative expected outcomes In general, when the Duke Energy Registrants retire regulated property, plant and equipment, the original cost plus the cost of retirement, less salvage value and any depreciation already recognized, is charged to accumulated depreciation. However, when it becomes probable the asset will be retired substantially in advance of its original expected useful life or is abandoned, the cost of the asset and the corresponding accumulated depreciation is recognized as a separate asset. If the asset is still in operation, the net amount is classified 109 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued)as Facilities to be retired, net on the Consolidated Balance Sheets. If the asset is no longer operating, the net amount is classified in Regulatory assets on the Consolidated Balance Sheets if deemed recoverable (see discussion of long-lived asset impairments above). The carrying value of the asset is based on historical cost if the Duke Energy Registrants are allowed to recover the remaining net book value and a return equal to at least the incremental borrowing rate. If not, an impairment is recognized to the extent the net book value of the asset exceeds the present value of future revenues discounted at the incremental borrowing rate. When the Duke Energy Registrants sell entire regulated operating units, or retire or sell nonregulated properties, the original cost and accumulated depreciation and amortization balances are removed from Property, Plant and Equipment on the Consolidated Balance Sheets. Any gain or loss is recorded in earnings, unless otherwise required by the applicable regulatory body. See Note 11 for additional information. Other Noncurrent Assets Duke Energy, through a nonregulated subsidiary, was the winner of the Carolina Long Bay offshore wind auction in May 2022 and recorded an asset of $150 million related to the contract in Other within Other noncurrent assets. In November 2022, Duke Energy committed to a plan to sell the Commercial Renewables business segment, excluding the offshore wind contract for Carolina Long Bay, which was moved to the Electric Utilities and Infrastructure (EU&I) segment. See Notes 2 and 3 for further information. Leases Duke Energy determines if an arrangement is a lease at contract inception based on whether the arrangement involves the use of a physically distinct identified asset and whether Duke Energy has the right to obtain substantially all of the economic benefits from the use of the asset throughout the period as well as the right to direct the use of the asset. As a policy election, Duke Energy does not evaluate arrangements with initial contract terms of less than one year as leases. Operating leases are included in Operating lease ROU assets, net, Other current liabilities and Operating lease liabilities on the Consolidated Balance Sheets. Finance leases are included in Property, plant and equipment, Current maturities of long-term debt and Long-Term Debt on the Consolidated Balance Sheets. For lessee and lessor arrangements, Duke Energy has elected a policy to not separate lease and non-lease components for all asset classes. For lessor arrangements, lease and non-lease components are only combined under one arrangement and accounted for under the lease accounting framework if the non-lease components are not the predominant component of the arrangement and the lease component would be classified as an operating lease. Nuclear Fuel Nuclear fuel is classified as Property, Plant and Equipment on the Consolidated Balance Sheets. Nuclear fuel in the front-end fuel processing phase is considered work in progress and not amortized until placed in service. Amortization of nuclear fuel is included within Fuel used in electric generation and purchased power on the Consolidated Statements of Operations. Amortization is recorded using the units-of-production method. Allowance for Funds Used During Construction and Interest Capitalized For regulated operations, the debt and equity costs of financing the construction of property, plant and equipment are reflected as AFUDC and capitalized as a component of the cost of property, plant and equipment. AFUDC equity is reported on the Consolidated Statements of Operations as non-cash income in Other income and expenses, net. AFUDC debt is reported as a non-cash offset to Interest Expense. After construction is completed, the Duke Energy Registrants are permitted to recover these costs through their inclusion in rate base and the corresponding subsequent depreciation or amortization of those regulated assets. AFUDC equity, a permanent difference for income taxes, reduces the ETR when capitalized and increases the ETR when depreciated or amortized. See Note 24 for additional information. Asset Retirement Obligations AROs are recognized for legal obligations associated with the retirement of property, plant and equipment. Substantially all AROs are related to regulated operations. When recording an ARO, the present value of the projected liability is recognized in the period in which it is incurred, if a reasonable estimate of fair value can be made. The liability is accreted over time. For operating plants, the present value of the liability is added to the cost of the associated asset and depreciated over the remaining life of the asset. For retired plants, the present value of the liability is recorded as a regulatory asset unless determined not to be probable of recovery. The present value of the initial obligation and subsequent updates are based on discounted cash flows, which include estimates regarding timing of future cash flows, selection of discount rates and cost escalation rates, among other factors. These estimates are subject to change. Depreciation expense is adjusted prospectively for any changes to the carrying amount of the associated asset. The Duke Energy Registrants receive amounts to fund the cost of the ARO for regulated operations through a combination of regulated revenues and earnings on the NDTF. As a result, amounts recovered in regulated revenues, earnings on the NDTF, accretion expense and depreciation of the associated asset are netted and deferred as a regulatory asset or liability. Accounts Payable During 2020, Duke Energy established a supply chain finance program (the “program”) with a global financial institution. The program is voluntary and allows Duke Energy suppliers, at their sole discretion, to sell their receivables from Duke Energy to the financial institution at a rate that leverages Duke Energy’s credit rating and, which may result in favorable terms compared to the rate available to the supplier on their own credit rating. Suppliers participating in the program, determine at their sole discretion which invoices they will sell to the financial institution. Suppliers’ decisions on which invoices are sold do not impact Duke Energy’s payment terms, which are based on commercial terms negotiated between Duke Energy and the supplier regardless of program participation. The commercial terms negotiated between Duke Energy and its suppliers are consistent regardless of whether the supplier elects to participate in the program. Duke Energy does not issue any guarantees with respect to the program and does not participate in negotiations between suppliers and the financial institution. Duke Energy does not have an economic interest in the supplier’s decision to participate in the program and receives no interest, fees or other benefit from the financial institution based on supplier participation in the program. 110 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued)The following table presents the outstanding accounts payable balance sold to the financial institution by our suppliers and the supplier invoices sold to the financial institution under the program included within Net cash provided by operating activities on the Consolidated Statements of Cash Flows as of December 31, 2022, and December 31, 2021. (in millions) Outstanding Accounts Payable Balance Sold Suppliers Invoices Settled Through The Program (in millions) Outstanding Accounts Payable Balance Sold Suppliers Invoices Settled Through The Program Revenue Recognition December 31, 2022 Duke Energy $ 87 301 Duke Energy Carolinas $ 6 29 Progress Energy $ 19 85 Duke Energy Progress $ 8 26 Duke Energy Florida $ 11 59 Duke Energy Ohio $ 5 38 December 30, 2021 Duke Energy $ 19 122 Progress Energy $ 9 10 Duke Energy Florida $ 9 10 Duke Energy Indiana $ — 2 Duke Energy Ohio $ 6 12 Piedmont $ 57 147 Piedmont $ 4 100 Duke Energy recognizes revenue as customers obtain control of promised goods and services in an amount that reflects consideration expected in exchange for those goods or services. Generally, the delivery of electricity and natural gas results in the transfer of control to customers at the time the commodity is delivered and the amount of revenue recognized is equal to the amount billed to each customer, including estimated volumes delivered when billings have not yet occurred. See Note 19 for further information. Derivatives and Hedging Derivative and non-derivative instruments may be used in connection with commodity price and interest rate activities, including swaps, futures, forwards and options. All derivative instruments, except those that qualify for the NPNS exception, are recorded on the Consolidated Balance Sheets at fair value. Qualifying derivative instruments may be designated as either cash flow hedges or fair value hedges. Other derivative instruments (undesignated contracts) either have not been designated or do not qualify as hedges. The effective portion of the change in the fair value of cash flow hedges is recorded in AOCI. The effective portion of the change in the fair value of a fair value hedge is offset in net income by changes in the hedged item. For activity subject to regulatory accounting, gains and losses on derivative contracts are reflected as regulatory assets or liabilities and not as other comprehensive income or current period income. As a result, changes in fair value of these derivatives have no immediate earnings impact. Formal documentation, including transaction type and risk management strategy, is maintained for all contracts accounted for as a hedge. At inception and at least every three months thereafter, the hedge contract is assessed to see if it is highly effective in offsetting changes in cash flows or fair values of hedged items. See Note 15 for further information. Captive Insurance Reserves Duke Energy has captive insurance subsidiaries that provide coverage, on an indemnity basis, to the Subsidiary Registrants as well as certain third parties, on a limited basis, for financial losses, primarily related to property, 111 workers’ compensation and general liability. Liabilities include provisions for estimated losses incurred but not reported (IBNR), as well as estimated provisions for known claims. IBNR reserve estimates are primarily based upon historical loss experience, industry data and other actuarial assumptions. Reserve estimates are adjusted in future periods as actual losses differ from experience. Duke Energy, through its captive insurance entities, also has reinsurance coverage with third parties for certain losses above a per occurrence and/or aggregate retention. Receivables for reinsurance coverage are recognized when realization is deemed probable. Preferred Stock Preferred stock is reviewed to determine the appropriate balance sheet classification and embedded features, such as call options, are evaluated to determine if they should be bifurcated and accounted for separately. Costs directly related to the issuance of preferred stock are recorded as a reduction of the proceeds received. The liability for the dividend is recognized when declared. The accumulated dividends on the cumulative preferred stock is recognized to net income available to Duke Energy Corporation in the EPS calculation. See Note 20 for further information. Loss Contingencies and Environmental Liabilities Contingent losses are recorded when it is probable a loss has occurred and the loss can be reasonably estimated. When a range of the probable loss exists and no amount within the range is a better estimate than any other amount, the minimum amount in the range is recorded. Unless otherwise required by GAAP, legal fees are expensed as incurred. Environmental liabilities are recorded on an undiscounted basis when environmental remediation or other liabilities become probable and can be reasonably estimated. Environmental expenditures related to past operations that do not generate current or future revenues are expensed. Environmental expenditures related to operations that generate current or future revenues are expensed or capitalized, as appropriate. Certain environmental expenditures receive regulatory accounting treatment and are recorded as regulatory assets. See Notes 4 and 5 for further information. PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued)Severance and Special Termination Benefits Excise Taxes Duke Energy maintains severance plans for the general employee population under which, in general, the longer a terminated employee worked prior to termination the greater the amount of severance benefits provided. A liability for involuntary severance is recorded once an involuntary severance plan is committed to by management if involuntary severances are probable and can be reasonably estimated. For involuntary severance benefits incremental to its ongoing severance plan benefits, the fair value of the obligation is expensed at the communication date if there are no future service requirements or over the required future service period. Duke Energy also offers special termination benefits under voluntary severance programs. Special termination benefits are recorded immediately upon employee acceptance absent a significant retention period. Otherwise, the cost is recorded over the remaining service period. Employee acceptance of voluntary severance benefits is determined by management based on the facts and circumstances of the benefits being offered. See Note 21 for further information. Guarantees If necessary, liabilities are recognized at the time of issuance or material modification of a guarantee for the estimated fair value of the obligation it assumes. Fair value is estimated using a probability weighted approach. The obligation is reduced over the term of the guarantee or related contract in a systematic and rational method as risk is reduced. Duke Energy recognizes a liability for the best estimate of its loss due to the nonperformance of the guaranteed party. This liability is recognized at the inception of a guarantee and is updated periodically. See Note 8 for further information. Income Taxes Duke Energy and its subsidiaries file a consolidated federal income tax return and other state and foreign jurisdictional returns. The Subsidiary Registrants are parties to a tax-sharing agreement with Duke Energy. Income taxes recorded represent amounts the Subsidiary Registrants would incur as separate C-Corporations. Deferred income taxes have been provided for temporary differences between GAAP and tax bases of assets and liabilities because the differences create taxable or tax-deductible amounts for future periods. ITCs associated with regulated operations are deferred and amortized as a reduction of income tax expense over the estimated useful lives of the related properties. Accumulated deferred income taxes are valued using the enacted tax rate expected to apply to taxable income in the periods in which the deferred tax asset or liability is expected to be settled or realized. In the event of a change in tax rates, deferred tax assets and liabilities are remeasured as of the enactment date of the new rate. To the extent that the change in the value of the deferred tax represents an obligation to customers, the impact of the remeasurement is deferred to a regulatory liability. Remaining impacts are recorded in income from continuing operations. Duke Energy’s results of operations could be impacted if the estimate of the tax effect of reversing temporary differences is not reflective of actual outcomes, is modified to reflect new developments or interpretations of the tax law, revised to incorporate new accounting principles, or changes in the expected timing or manner of a reversal. Tax-related interest and penalties are recorded in Interest Expense and Other Income and Expenses, net in the Consolidated Statements of Operations. See Note 24 for further information. Certain excise taxes levied by state or local governments are required to be paid even if not collected from the customer. These taxes are recognized on a gross basis. Taxes for which Duke Energy operates merely as a collection agent for the state and local government are accounted for on a net basis. Excise taxes accounted for on a gross basis within both Operating Revenues and Property and other taxes in the Consolidated Statements of Operations were as follows. (in millions) Duke Energy Duke Energy Carolinas Progress Energy Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana Piedmont Years Ended December 31, 2022 2021 2020 $ 449 47 290 25 265 104 7 1 $ 420 44 250 22 228 102 23 1 $ 415 43 249 26 223 96 25 2 Dividend Restrictions and Unappropriated Retained Earnings Duke Energy does not have any current legal, regulatory or other restrictions on paying common stock dividends to shareholders. However, if Duke Energy were to defer dividend payments on the preferred stock, the declaration of common stock dividends would be prohibited. See Note 20 for more information. Additionally, as further described in Note 4, Duke Energy Carolinas, Duke Energy Progress, Duke Energy Ohio, Duke Energy Indiana and Piedmont have restrictions on paying dividends or otherwise advancing funds to Duke Energy due to conditions established by regulators in conjunction with merger transaction approvals. At December 31, 2022, and 2021, an insignificant amount of Duke Energy’s consolidated Retained earnings balance represents undistributed earnings of equity method investments. New Accounting Standards The following accounting standard was adopted by the Duke Energy Registrants in 2021. Leases with Variable Lease Payments. In July 2021, the FASB issued new accounting guidance requiring lessors to classify a lease with variable lease payments that do not depend on a reference index or rate as an operating lease if both of the following are met: (1) the lease would have to be classified as a sales-type or direct financing lease under prior guidance, and (2) the lessor would have recognized a day-one loss. Duke Energy elected to adopt the guidance immediately upon issuance of the new standard and will be applying the new standard prospectively to new lease arrangements meeting the criteria. Duke Energy did not have any lease arrangements that this new accounting guidance materially impacted. The following accounting standard was adopted by the Duke Energy Registrants in 2020. Current Expected Credit Losses. In June 2016, the FASB issued new accounting guidance for credit losses. Duke Energy adopted the new accounting guidance for credit losses effective January 1, 2020, using the modified retrospective method of adoption, which does not require restatement of prior year results. Duke Energy did not adopt any practical expedients. 112 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued)Duke Energy recognizes allowances for credit losses based on management’s estimate of losses expected to be incurred over the lives of certain assets or guarantees. Management monitors credit quality, changes in expected credit losses and the appropriateness of the allowance for credit losses on a forward-looking basis. Management reviews the risk of loss periodically as part of the existing assessment of collectability of receivables. Duke Energy reviews the credit quality of its counterparties as part of its regular risk management process and requires credit enhancements, such as deposits or letters of credit, as appropriate and as allowed by regulators. Duke Energy recorded cumulative effects of changes in accounting principles related to the adoption of the new credit loss standard for allowances and credit losses of trade and other receivables, insurance receivables and financial guarantees. These amounts are included in the Consolidated Balance Sheets in Receivables, Receivables of VIEs, Other Noncurrent Assets and Other Noncurrent Liabilities. See Notes 8 and 19 for more information. Duke Energy recorded an adjustment for the cumulative effect of a change in accounting principle due to the adoption of this standard on January 1, 2020, as shown in the table below: (in millions) Total pretax impact to Retained Earnings 2. DISPOSITIONS January 1, 2020 Duke Energy Duke Energy Carolinas Progress Energy Duke Energy Progress Duke Energy Florida Piedmont $ 120 $ 16 $ 2 $ 1 $ 1 $ 1 The following table summarizes the Loss from Discontinued Operations, net of tax recorded on Duke Energy’s Consolidated Statements of Operations: (in millions) Commercial Renewables Disposal Groups Other(a) Loss from Discontinued Operations, net of tax Years Ended December 31, 2022 (1,349) 26 (1,323) $ $ 2021 (151) 7 (144) $ $ 2020 (14) 7 (7) $ $ (a) Amount represents an income tax benefit resulting from tax adjustments for previously sold businesses not related to the Commercial Renewables Disposal Groups. Sale of Commercial Renewables Segment In August 2022, Duke Energy announced a strategic review of its commercial renewables business. Since 2007, Duke Energy has built a portfolio of commercial wind, solar and battery projects across the U.S., and established a development pipeline. Duke Energy has developed a strategy to focus on renewables, grid and other investment opportunities within its regulated operations. In November 2022, Duke Energy committed to a plan to sell the Commercial Renewables business segment, excluding the offshore wind contract for Carolina Long Bay, which was moved to the Electric Utilities and Infrastructure (EU&I) segment. Duke Energy is actively marketing the business as two separate disposal groups, the utility-scale solar and wind group and the distributed generation group (collectively, Commercial Renewables Disposal Groups). The sales processes for both Disposal Groups are ongoing and Duke Energy expects to dispose of these groups in the second half of 2023. Assets Held For Sale and Discontinued Operations The Commercial Renewables Disposal Groups were classified as held for sale and as discontinued operations in the fourth quarter of 2022. No adjustments were made to the historical activity within the Consolidated Statements of Comprehensive Income, Consolidated Statements of Cash Flows or the Consolidated Statements of Changes in Equity. Unless otherwise noted, the notes to these consolidated financial statements exclude amounts related to discontinued operations for all periods presented. 113 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued)The following table presents the carrying values of the major classes of Assets held for sale and Liabilities associated with assets held for sale included in Duke Energy’s Consolidated Balance Sheets. (in millions) Current Assets Held for Sale Cash and cash equivalents Receivables, net Inventory Other Total current assets held for sale Noncurrent Assets Held for Sale Property, Plant and Equipment Cost Accumulated depreciation and amortization Net property, plant and equipment Operating lease right-of-use assets, net Investments in equity method unconsolidated affiliates Other Total other noncurrent assets held for sale Total Assets Held for Sale Current Liabilities Associated with Assets Held for Sale Accounts payable Taxes accrued Other Total current liabilities associated with assets held for sale Noncurrent Liabilities Associated with Assets Held for Sale Operating lease liabilities Asset retirement obligations Other Total other noncurrent liabilities associated with assets held for sale Total Liabilities Associated with Assets Held for Sale December 31, 2022 2021 $ 10 107 88 57 262 $ 3 87 86 56 232 6,444 (1,651) 4,793 140 522 179 841 7,323 (1,452) 5,871 130 513 181 824 $ 5,896 $ 6,927 $ $ 122 17 120 259 150 190 399 739 $ 998 $ 98 18 51 167 134 175 303 612 779 As of December 31, 2022, the noncontrolling interest balance is $1.6 billion. The following table presents the results of the Commercial Renewables Disposal Groups, which are included in Loss from Discontinued Operations, net of tax in Duke Energy’s Consolidated Statements of Operations. (in millions) Operating revenues Operation, maintenance and other Depreciation and amortization(a) Property and other taxes Other income and expenses, net Interest expense Loss on disposal Loss before income taxes Income tax benefit Loss from discontinued operations Add: Net loss attributable to noncontrolling interest included in discontinued operations Net income from discontinued operations attributable to Duke Energy Corporation (a) Upon meeting the criteria for assets held for sale, beginning in November 2022 depreciation and amortization expense were ceased. 114 Years Ended December 31, 2022 2021 2020 $ 465 337 201 36 2 10 1,748 (1,865) (516) $ (1,349) 108 $ (1,241) $ $ $ 476 343 227 34 (27) 72 — (227) (76) (151) 344 193 $ $ $ 502 292 200 26 1 66 — (81) (67) (14) 296 282 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued) The Commercial Renewables Disposal Groups’ held for sale assets included pretax impairments of approximately $1.7 billion for the year ended December 31, 2022. The impairment was recorded to write-down the carrying amount of the property, plant and equipment assets to the estimated fair value of the business, based on the expected selling price less estimated cost to sell. These losses were included in Loss from Discontinued Operations, net of tax in Duke Energy’s Consolidated Statements of Operations and Comprehensive Income. The fair value was primarily determined from the income approach using discounted cash flows but also considered market information obtained through the bidding process. The discounted cash flow model utilized Level 2 and Level 3 inputs. The fair value hierarchy levels are further discussed in Note 17. The impairment will be updated, if necessary, based on the final sales price, after any adjustments at closing for working capital and capital expenditures. Duke Energy has elected not to separately disclose discontinued operations on Duke Energy’s Consolidated Statements of Cash Flows. The following table summarizes Duke Energy’s cash flows from discontinued operations related to the Commercial Renewables Disposal Groups. (in millions) Cash flows provided by (used in): Operating activities Investing activities Other Sale Related Matters Several Duke Energy renewables project companies, located in the Electric Reliability Council of Texas (ERCOT) market, were named in several lawsuits arising out of Texas Storm Uri, which occurred in February 2021. The legal actions related to these lawsuits will remain with Duke Energy and any future activity related to the matters will be presented in discontinued operations. See Note 5 for more information. The Commercial Renewables Disposal Groups’ debt and related interest rate swaps have not been classified as held for sale as they are not currently expected transfer to the buyer, but would be required to be extinguished as a result of the disposition. As of December 31, 2022, the balance of long- term debt including current maturities is $1.5 billion. If the debt and related interest rate swaps do not transfer to the buyer and are terminated early, the expected total loss on extinguishment is approximately $100 million, of which approximately $55 million is expected to be attributable to Duke Energy. The loss would be recorded in discontinued operations when the debt and swaps are terminated. Hedge accounting was discontinued on the related interest rate swaps when the Commercial Renewables Disposal Groups were classified as held for sale as the forecasted transactions being hedged are no longer probable. As a result, a gain of $72 million was recorded in Loss from Discontinued Operations, net of tax in Duke Energy’s Consolidated Statements of Operations as of December 31, 2022, of which $54 million is attributable to Duke Energy. Interest expense and debt issuance costs directly associated with the Commercial Renewables Disposal Groups was allocated to discontinued operations. No interest from corporate level debt was allocated to discontinued operations. Years Ended December 31, 2022 2021 2020 $ 213 $ 62 $ 466 (802) (542) (1,102) The Commercial Renewables Disposal Groups have entered into negotiations to modify or terminate certain PPAs under which the Commercial Renewables Disposal Groups sell power and RECs from renewable projects to offtakers. Duke Energy expects to pay offtakers approximately $95 million to modify the agreements. Charges related to the modifications will be reflected within Loss From Discontinued Operations in Duke Energy’s Consolidated Statements of Operations. Sale of Minority Interest in Duke Energy Indiana Holdco, LLC 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 was completed following two closings for an aggregate purchase price of approximately $2.05 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 $1.03 billion or 50% of the purchase price. The difference between the cash consideration received, net of transaction costs of approximately $27 million, and the carrying value of the noncontrolling interest is $545 million and was recorded as an increase to equity. The second closing was completed in December 2022 and resulted in Duke Energy Indiana Holdco, LLC issuing an additional 8.85% of its membership interests in exchange for approximately $1.03 billion. The difference between the cash consideration received, net of transaction costs of approximately $6 million, and the carrying value of the noncontrolling interest is $492 million and was recorded as an increase to equity. Duke Energy retained indirect control of these assets, and, therefore, no gain or loss was recognized on the Consolidated Statements of Operations for either transaction. 115 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued)3. BUSINESS SEGMENTS Reportable segments are determined based on information used by the chief operating decision-maker in deciding how to allocate resources and evaluate the performance of the business. Duke Energy 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, as discussed below, includes intercompany revenues and expenses that are eliminated on the Consolidated Financial Statements. Certain governance costs are allocated to each segment. In addition, direct interest expense and income taxes are included in segment income. Products and services are sold between affiliate companies and reportable segments of Duke Energy at cost. Segment assets as presented in the tables that follow exclude all intercompany assets. Duke Energy Due to Duke Energy’s commitment in the fourth quarter of 2022 to sell the Commercial Renewables business segment, Duke Energy’s segment structure now includes the following two segments: EU&I and GU&I. Prior period information has been recast to conform to the current segment structure. See Note 2 for further information on the Commercial Renewables Disposal Groups. The EU&I segment includes Duke Energy’s regulated electric utilities in the Carolinas, Florida and the Midwest. The regulated electric utilities conduct operations through the Subsidiary Registrants that are substantially all regulated and, accordingly, qualify for regulatory accounting treatment. EU&I also includes Duke Energy’s electric transmission infrastructure investments and the offshore wind contract for Carolina Long Bay. Refer to Note 2 for further information. The GU&I 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. GU&I’s operations are substantially all regulated and, accordingly, qualify for regulatory accounting treatment. 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 and Duke Energy’s wholly owned captive insurance company, Bison. Other also includes Duke Energy’s interest in NMC. See Note 13 for additional information on the investment in NMC. Business segment information is presented in the following tables. Segment assets presented exclude intercompany assets. Year Ended December 31, 2022 (in millions) Unaffiliated Revenues Intersegment Revenues Total Revenues Interest Expense Depreciation and amortization Equity in earnings of unconsolidated affiliates Income tax expense (benefit) Segment income (loss)(a)(b) Less noncontrolling interest Add back preferred stock dividend Discontinued operations Net income Capital investments expenditures and acquisitions(c) Segment assets(d) Electric Utilities and Infrastructure Gas Utilities and Infrastructure $ 25,990 34 $ 26,024 $ 1,565 4,550 7 536 3,929 $ 2,748 92 $ 2,840 $ 182 327 20 8 468 Total Reportable Segments $ 28,738 126 Other Eliminations Total $ 30 92 $ — $ 28,768 — (218) $ 28,864 $ 122 $ (218) $ 28,768 $ 1,747 4,877 27 544 4,397 $ 778 236 86 (244) (737) $ (86) $ (27) — — (1) 2,439 5,086 113 300 3,659 95 106 (1,215) 2,455 $ $ — $ 11,419 — 178,086 $ 8,985 152,104 $ 1,295 16,411 $ 10,280 $ 1,139 168,515 9,571 (a) EU&I includes $386 million recorded within Impairment of assets and other charges, $46 million within Regulated electric revenues and $34 million within Noncontrolling Interests related to the Duke Energy Indiana court rulings on coal ash on the Consolidated Statements of Operations. See Note 4 for additional information. (b) Other includes $72 million recorded within Impairment of assets and other charges, $71 million within Operations, maintenance and other and a $7 million gain within Gains on sales of other assets related to costs attributable to business transformation, including long-term real estate strategy changes and workforce realignment on the Consolidated Statements of Operations; it also includes $25 million recorded within Operations, maintenance and other related to litigation on the Consolidated Statements of Operations. (c) Other includes capital investments expenditures and acquisitions related to the Commercial Renewables Disposal Groups. (d) Other includes Assets Held for Sale balances related to the Commercial Renewables Disposal Groups. Refer to Note 2 for further information. 116 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued)(in millions) Unaffiliated Revenues Intersegment Revenues Total Revenues Interest Expense Depreciation and amortization Equity in earnings of unconsolidated affiliates Income tax expense (benefit) Segment income (loss)(a)(b)(c) Less noncontrolling interest Add back preferred stock dividend Discontinued operations Net income Capital investments expenditures and acquisitions(d) Segment assets(e) Year Ended December 31, 2021 Electric Utilities and Infrastructure Gas Utilities and Infrastructure $ 22,570 33 $ 22,603 $ 1,432 4,251 7 494 3,850 $ 2,022 90 $ 2,112 $ 142 303 8 55 396 Total Reportable Segments $ 24,592 123 $ 24,715 $ 1,574 4,554 15 549 4,246 $ $ $ 29 84 113 643 236 47 (281) (641) $ 7,653 143,841 $ 1,271 15,179 $ 8,924 159,020 $ 828 10,567 Other Eliminations Total $ — $ 24,621 — (207) $ (207) $ 24,621 $ (10) $ (28) — — (3) $ $ — $ 2,207 4,762 62 268 3,602 329 106 200 3,579 9,752 — 169,587 (a) EU&I includes $160 million of expense recorded within Impairment of assets and other charges, $77 million of income within Other Income and expenses, $5 million of expense within Operations, maintenance and other, $13 million of income within regulated operating revenues, $3 million of expense within interest expense and $6 million of expense within Depreciation and amortization on the Duke Energy Carolinas’ Consolidated Statement of Operations related to the South Carolina Supreme Court decision on coal ash and insurance proceeds; it also includes $42 million of expense recorded within Impairment of assets and other charges, $34 million of income within Other Income and expenses, $7 million of expense within Operations, maintenance, and other, $15 million of income within Regulated electric operating revenues, $5 million of expense within interest expense and $1 million of expense within Depreciation and amortization on the Duke Energy Progress’ Consolidated Statement of Operations. See Notes 4 and 5 for more information. (b) GU &I includes $20 million, recorded within Equity in earnings (losses) of unconsolidated affiliates on the Consolidated Statements of Operations, related to natural gas pipeline investments. See Note 4 for additional information. (c) Other includes $133 million recorded within Impairment of assets and other charges, $42 million within Operations, maintenance and other, and $17 million within Depreciation and amortization on the Consolidated Statements of Operations, related to the workplace and workforce realignment. See Note 11 for additional information. (d) Other includes capital investments expenditures and acquisitions related to the Commercial Renewables Disposal Groups. (e) Other includes Assets Held for Sale balances related to the Commercial Renewables Disposal Groups. Refer to Note 2 for further information. Year Ended December 31, 2020 (in millions) Unaffiliated Revenues Intersegment Revenues Total Revenues Interest Expense Depreciation and amortization Equity in (losses) earnings of unconsolidated affiliates Income tax expense (benefit) Segment income (loss)(a)(b)(c) Less noncontrolling interest Add back preferred stock dividend Discontinued operations Net income Capital investments expenditures and acquisitions(d) Segment assets(e) Electric Utilities and Infrastructure Gas Utilities and Infrastructure $ 21,687 33 $ 21,720 $ 1,320 4,068 (1) 340 2,669 $ 1,653 95 $ 1,748 $ 135 258 (2,017) (349) (1,266) Total Reportable Segments $ 23,340 128 $ 23,468 $ 1,455 4,326 (2,018) (9) 1,403 $ $ $ 26 73 99 657 207 13 (160) (418) $ 7,629 138,225 $ 1,309 13,849 $ 8,938 152,074 $ 1,483 10,314 Other Eliminations Total $ — $ 23,366 — (201) $ (201) $ 23,366 $ (15) $ (29) — — (4) 2,097 4,504 (2,005) (169) 981 295 107 289 1,082 $ $ — $ 10,421 — 162,388 (a) EU&I includes $948 million of Impairment of assets and other charges and a reversal of $152 million included in Regulated electric operating revenue related to the CCR Settlement Agreement filed with the NCUC. Additionally, EU&I includes $19 million of Impairment of assets and other charges related to the Clemson University Combined Heat and Power Plant, $5 million of Impairment charges related to the natural gas pipeline assets and $16 million of shareholder contributions within Operations, maintenance and other related to Duke Energy Carolinas’ and Duke Energy Progress’ 2019 North Carolina rate cases. See Note 4 for additional information. (b) GU&I includes $2.1 billion recorded within Equity in (losses) earnings of unconsolidated affiliates and $7 million of Impairment of assets and other charges related to natural gas pipeline investments. See Notes 4 and 13 for additional information. (c) Other includes a $98 million reversal of 2018 severance costs due to a partial settlement in the Duke Energy Carolinas’ 2019 North Carolina rate case. See Note 21 for additional information. (d) Other includes capital investments expenditures and acquisitions related to the Commercial Renewables Disposal Groups. (e) Other includes Assets Held for Sale balances related to the Commercial Renewables Disposal Groups. Refer to Note 2 for further information. 117 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued)Geographical Information Substantially all assets and revenues from continuing operations are within the U.S. Major Customers For the year ended December 31, 2022, revenues from one customer of Duke Energy Progress are $684 million. Duke Energy Progress has one reportable segment, Electric Utilities and Infrastructure. No other Subsidiary Registrant has an individual customer representing more than 10% of its revenues for the year ended December 31, 2022. Products and Services The following table summarizes revenues of the reportable segments by type. (in millions) 2022 Electric Utilities and Infrastructure Gas Utilities and Infrastructure Total Reportable Segments 2021 Electric Utilities and Infrastructure Gas Utilities and Infrastructure Total Reportable Segments 2020 Electric Utilities and Infrastructure Gas Utilities and Infrastructure Total Reportable Segments Duke Energy Ohio Retail Electric Wholesale Electric Retail Natural Gas Other Total Revenues $ 22,036 — $ 22,036 $ 19,410 — $ 19,410 $ 18,898 — $ 18,898 $ $ $ $ $ $ 2,882 — 2,882 2,216 — 2,216 1,878 — 1,878 $ $ $ $ $ $ — 2,535 2,535 — 2,025 2,025 — 1,691 1,691 $ 1,106 305 $ 1,411 $ 977 87 $ 1,064 $ 944 57 $ 1,001 $ 26,024 2,840 $ 28,864 $ 22,603 2,112 $ 24,715 $ 21,720 1,748 $ 23,468 Duke Energy Ohio has two reportable segments, EU&I and GU&I. EU&I transmits and distributes electricity in portions of Ohio and generates, distributes and sells electricity in portions of Northern Kentucky. GU&I transports and sells natural gas in portions of Ohio and Northern Kentucky. Both reportable segments conduct operations primarily through Duke Energy Ohio and its wholly owned subsidiary, Duke Energy Kentucky. The remainder of Duke Energy Ohio’s operations is presented as Other. 118 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued)All Duke Energy Ohio assets and revenues from continuing operations are within the U.S. (in millions) Total revenues Interest expense Depreciation and amortization Income tax expense (benefit) Segment income (loss)/Net income Capital expenditures Segment assets (in millions) Total revenues Interest expense Depreciation and amortization Income tax expense (benefit) Segment income (loss)/Net Income Capital expenditures Segment assets (in millions) Total revenues Interest expense Depreciation and amortization Income tax expense (benefit) Segment income (loss) Capital expenditures Segment assets Year Ended December 31, 2022 Electric Utilities and Infrastructure Gas Utilities and Infrastructure $ 1,798 $ $ 86 221 24 189 488 7,504 $ $ $ 716 43 103 (43) 121 362 4,164 Total Reportable Segments $ $ $ 2,514 129 324 (19) 310 850 11,668 Other $ — $ — — (2) (8) $ — 14 Eliminations Total $ — $ 2,514 $ — $ — — — $ — $ (176) 129 324 (21) 302 850 11,506 Year Ended December 31, 2021 Electric Utilities and Infrastructure Gas Utilities and Infrastructure Total Reportable Segments $ 1,493 $ $ 87 217 15 141 486 6,882 $ $ $ 544 24 90 19 78 362 3,892 $ $ $ 2,037 111 307 34 219 848 10,774 Other $ — $ — — (4) (15) $ — 29 Eliminations Total $ — $ 2,037 $ — $ — — — $ — $ (29) 111 307 30 204 848 10,774 Year Ended December 31, 2020 Electric Utilities and Infrastructure Gas Utilities and Infrastructure Total Reportable Segments $ 1,405 $ $ 85 200 19 162 548 6,615 $ $ $ 453 17 78 26 96 286 3,380 $ $ $ 1,858 102 278 45 258 834 9,995 Other $ — $ — — (2) (6) $ — 32 Eliminations Total $ — $ 1,858 $ — $ — — — $ — $ (2) 102 278 43 252 834 10,025 119 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued)4. REGULATORY MATTERS REGULATORY ASSETS AND LIABILITIES The Duke Energy Registrants record regulatory assets and liabilities that result from the ratemaking process. See Note 1 for further information. The following tables present the regulatory assets and liabilities recorded on the Consolidated Balance Sheets of Duke Energy and Progress Energy. See separate tables below for balances by individual registrant. (in millions) Regulatory Assets AROs – coal ash AROs – nuclear and other Deferred fuel and purchased power Accrued pension and OPEB Storm cost securitized balance, net Nuclear asset securitized balance, net Debt fair value adjustment Storm cost deferrals Hedge costs deferrals Post-in-service carrying costs (PISCC) and deferred operating expenses Retired generation facilities Deferred asset – Lee and Harris COLA Advanced metering infrastructure (AMI) Customer connect project Costs of removal regulatory asset Vacation accrual Incremental COVID-19 expenses CEP deferral Demand side management (DSM)/Energy efficiency (EE) Derivatives – natural gas supply contracts NCEMPA deferrals Nuclear deferral Deferred pipeline integrity costs COR settlement Deferred coal ash handling system costs Qualifying facility contract buyouts Amounts due from customers Propane caverns Deferred severance charges Manufactured gas plant (MGP) Other Total regulatory assets Less: current portion Total noncurrent regulatory assets Regulatory Liabilities Net regulatory liability related to income taxes Costs of removal AROs – nuclear and other Hedge cost deferrals Accrued pension and OPEB DOE Settlement Provision for rate refunds Amounts to be refunded to customers Other Total regulatory liabilities Less: current portion Total noncurrent regulatory liabilities 120 Duke Energy Progress Energy December 31, December 31, 2022 2021 2022 2021 $ 3,205 945 3,866 2,336 940 881 829 666 378 342 316 288 283 271 221 222 210 190 189 168 157 154 121 120 92 81 57 26 21 — 555 18,130 3,485 $ 3,408 684 1,253 2,017 991 937 884 213 348 356 357 317 311 242 107 221 87 161 235 139 165 120 108 123 90 94 85 — 54 104 426 14,637 $1,429 884 2,060 759 720 881 — 559 128 42 243 21 111 136 221 43 78 — 188 — 157 64 — 32 25 81 — — 7 — 110 8,979 $ 1,399 620 718 725 759 937 — 189 137 47 265 21 130 124 107 42 28 — 230 — 165 42 — 32 23 94 — — 18 — 87 6,939 2,150 1,833 1,030 $14,645 $12,487 $7,146 $ 5,909 $ 6,462 5,151 1,038 683 211 154 78 45 1,226 15,048 1,466 $ 7,199 6,150 2,053 364 213 — 274 — 1,110 17,363 1,211 $2,192 2,269 — 252 — 154 28 — 434 5,329 576 $ 2,394 2,955 — 155 — — 87 — 453 6,044 478 $13,582 $16,152 $4,753 $ 5,566 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued)Descriptions of regulatory assets and liabilities summarized in the tables above and below follow. See tables below for recovery and amortization periods at the separate registrants. AROs – coal ash. Represents deferred depreciation and accretion related to the legal obligation to close ash basins. The costs are deferred until recovery treatment has been determined. See Notes 1 and 10 for additional information. AROs – nuclear and other. Represents regulatory assets or liabilities, including deferred depreciation and accretion, related to legal obligations associated with the future retirement of property, plant and equipment, excluding amounts related to coal ash. The AROs relate primarily to decommissioning nuclear power facilities. The amounts also include certain deferred gains and losses on NDTF investments. See Notes 1 and 10 for additional information. Deferred fuel and purchased power. Represents certain energy-related costs that are recoverable or refundable as approved by the applicable regulatory body. Accrued pension and OPEB. Accrued pension and OPEB represent regulatory assets and liabilities related to each of the Duke Energy Registrants’ respective shares of unrecognized actuarial gains and losses and unrecognized prior service cost and credit attributable to Duke Energy’s pension plans and OPEB plans. The regulatory asset or liability is amortized with the recognition of actuarial gains and losses and prior service cost and credit to net periodic benefit costs for pension and OPEB plans. The accrued pension and OPEB regulatory assets are expected to be recovered primarily over the average remaining service periods or life expectancies of employees covered by the benefit plans. See Note 23 for additional detail. Storm cost securitized balance, net. Represents the North Carolina portion of storm restoration expenditures related to Hurricane Florence, Hurricane Michael, Hurricane Dorian and Winter Storm Diego (2018 and 2019 events). Nuclear asset securitized balance, net. Represents the balance associated with Crystal River Unit 3 retirement approved for recovery by the FPSC on September 15, 2015, and the upfront financing costs securitized in 2016 with issuance of the associated bonds. The regulatory asset balance is net of the AFUDC equity portion. Debt fair value adjustment. Purchase accounting adjustments recorded to state the carrying value of Progress Energy and Piedmont at fair value in connection with the 2012 and 2016 mergers, respectively. Amount is amortized over the life of the related debt. Storm cost deferrals. Represents deferred incremental costs incurred related to major weather-related events. Hedge costs deferrals. Amounts relate to unrealized gains and losses on derivatives recorded as a regulatory asset or liability, respectively, until the contracts are settled. Post-in-service carrying costs (PISCC) and deferred operating expenses. Represents deferred depreciation and operating expenses as well as carrying costs on the portion of capital expenditures placed in service but not yet reflected in retail rates as plant in service. Retired generation facilities. Represents amounts to be recovered for facilities that have been retired and are probable of recovery. Deferred asset – Lee and Harris COLA. Represents deferred costs incurred for the canceled Lee and Harris nuclear projects. AMI. Represents deferred costs related to the installation of AMI meters and remaining net book value of non-AMI meters to be replaced at Duke Energy Carolinas, net book value of existing meters at Duke Energy Florida, Duke Energy Progress and Duke Energy Ohio and future recovery of net book value of electromechanical meters that have been replaced with AMI meters at Duke Energy Indiana. Customer connect project. Represents incremental operating expenses and carrying costs on deferred amounts related to the deployment of the new customer information system. Vacation accrual. Represents vacation entitlement, which is generally recovered in the following year. Incremental COVID-19 expenses. Represents incremental costs related to ensuring continuity and quality of service in a safe manner during the COVID-19 pandemic. CEP deferral. Represents deferred depreciation, PISCC and deferred property tax for Duke Energy Ohio Gas capital assets for the Capital Expenditure Program (CEP). DSM/EE. Deferred costs related to various DSM and EE programs recoverable through various mechanisms. Derivatives – natural gas supply contracts. Represents costs for certain long-dated, fixed quantity forward natural gas supply contracts, which are recoverable through PGA clauses. NCEMPA deferrals. Represents retail allocated cost deferrals and returns associated with the additional ownership interest in assets acquired from NCEMPA in 2015. Nuclear deferral. Includes amounts related to levelizing nuclear plant outage costs, which allows for the recognition of nuclear outage expenses over the refueling cycle rather than when the outage occurs, resulting in the deferral of operations and maintenance costs associated with refueling. Deferred pipeline integrity costs. Represents pipeline integrity management costs in compliance with federal regulations. COR settlement. Represents approved COR settlements that are being amortized over the average remaining lives, at the time of approval, of the associated assets. Deferred coal ash handling system costs. Represents deferred depreciation and returns associated with capital assets related to converting the ash handling system from wet to dry. Qualifying facility contract buyouts. Represents termination payments for regulatory recovery through the capacity clause. Amounts due from customers. Relates primarily to margin decoupling and IMR recovery mechanisms. Costs of removal regulatory asset. Represents the excess of spend over funds received from customers to cover the future removal of property, plant and equipment from retired or abandoned sites as property is retired, net of certain deferred gains on NDTF investments. Propane Caverns. Represents amounts for costs related to propane inventory, the net book value of remaining assets and decommissioning costs at Duke Energy Ohio. MGP. Represents remediation costs incurred at former MGP sites and the deferral of costs to be incurred at Duke Energy Ohio’s East End and West End sites. Net regulatory liability related to income taxes. Amounts for all registrants include regulatory liabilities related primarily to impacts from the Tax Act. See Note 24 for additional information. Amounts have no immediate impact on rate base as regulatory assets are offset by deferred tax liabilities. Costs of removal. Represents funds received from customers to cover the future removal of property, plant and equipment from retired or abandoned sites as property is retired. Also includes certain deferred gains on NDTF investments. DOE Settlement. Represents litigation settlement funds received resulting from the DOE’s failure to accept spent nuclear fuel and other radioactive waste from the Crystal River Unit 3 during 2014-2018 as required under the Nuclear Waste Policy Act. 121 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued)Provision for rate refunds. Represents estimated amounts due to Piedmont customers based on recording interim rates subject to refund. RESTRICTIONS ON THE ABILITY OF CERTAIN SUBSIDIARIES TO MAKE DIVIDENDS, ADVANCES AND LOANS TO DUKE ENERGY As a condition to the approval of merger transactions, the NCUC, PSCSC, PUCO, KPSC and IURC imposed conditions on the ability of Duke Energy Carolinas, Duke Energy Progress, Duke Energy Ohio, Duke Energy Kentucky, Duke Energy Indiana and Piedmont to transfer funds to Duke Energy through loans or advances, as well as restricted amounts available to pay dividends to Duke Energy. Certain subsidiaries may transfer funds to the Parent by obtaining approval of the respective state regulatory commissions. These conditions imposed restrictions on the ability of the public utility subsidiaries to pay cash dividends as discussed below. Duke Energy Progress and Duke Energy Florida also have restrictions imposed by their first mortgage bond indentures, which in certain circumstances, limit their ability to make cash dividends or distributions on common stock. Amounts restricted as a result of these provisions were not material at December 31, 2022. Additionally, certain other subsidiaries of Duke Energy have restrictions on their ability to dividend, loan or advance funds to Duke Energy due to specific legal or regulatory restrictions, including, but not limited to, minimum working capital and tangible net worth requirements. The restrictions discussed below were not a material amount of Duke Energy’s and Progress Energy’s net assets at December 31, 2022. Duke Energy Carolinas Duke Energy Carolinas must limit cumulative distributions subsequent to mergers to (i) the amount of retained earnings on the day prior to the closing of the mergers, plus (ii) any future earnings recorded. Duke Energy Progress Duke Energy Progress must limit cumulative distributions subsequent to the mergers between Duke Energy and Progress Energy and Duke Energy and Piedmont to (i) the amount of retained earnings on the day prior to the closing of the respective mergers, plus (ii) any future earnings recorded. Duke Energy Ohio Duke Energy Ohio will not declare and pay dividends out of capital or unearned surplus without the prior authorization of the PUCO. Duke Energy Ohio received FERC and PUCO approval to pay dividends from its equity accounts that are reflective of the amount that it would have in its retained earnings account had push-down accounting for the Cinergy merger not been applied to Duke Energy Ohio’s balance sheet. The conditions include a commitment from Duke Energy Ohio that equity, adjusted to remove the impacts of push-down accounting, will not fall below 30% of total capital. Duke Energy Kentucky is required to pay dividends solely out of retained earnings and to maintain a minimum of 35% equity in its capital structure. Duke Energy Indiana Duke Energy Indiana must limit cumulative distributions subsequent to the merger between Duke Energy and Cinergy to (i) the amount of retained earnings on the day prior to the closing of the merger, plus (ii) any future earnings recorded. In addition, Duke Energy Indiana will not declare and pay dividends out of capital or unearned surplus without prior authorization of the IURC. Piedmont must limit cumulative distributions subsequent to the acquisition of Piedmont by Duke Energy to (i) the amount of retained earnings on the day prior to the closing of the merger, plus (ii) any future earnings recorded. 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 Hurricane Ian In late September and early October 2022, Hurricane Ian inflicted severe damage to the Duke Energy Carolinas and Duke Energy Progress territories in North Carolina and South Carolina. Approximately 950,000 customers were impacted. Total estimated operation and maintenance expenses incurred for restoration efforts for the year ended December 31, 2022, were approximately $100 million, with an additional $9 million in capital investments. Approximately $83 million of the operation and maintenance expenses are deferred in Regulatory assets within Other Noncurrent Assets on the Consolidated Balance Sheets as of December 31, 2022 ($40 million and $43 million for Duke Energy Carolinas and Duke Energy Progress, respectively). Duke Energy Carolinas and Duke Energy Progress have regulatory tools to recover storm costs including deferral and securitization. These estimates could change as Duke Energy Carolinas and Duke Energy Progress receive additional information on actual costs. Carbon Plan Proceeding On October 13, 2021, North Carolina enacted legislation (Energy Solutions for North Carolina or HB 951) that established a framework overseen by the NCUC to advance North Carolina CO2 emission reductions from electric generating facilities in the state through the use of least cost planning while providing for continued reliability and affordable rates for customers. Among other things, HB 951 directed that the NCUC approve an initial carbon plan (Carbon Plan) by December 31, 2022, taking all reasonable steps to achieve a 70% reduction in CO2 emissions from public utilities’ electric generating facilities in the state by 2030 (from 2005 levels) and achieve carbon neutrality from electric generating facilities by 2050 while maintaining affordability and reliability for customers. On May 16, 2022, Duke Energy Carolinas and Duke Energy Progress filed their proposed Carolinas Carbon Plan (Proposed Plan) with the NCUC. The NCUC issued an order on December 30, 2022, adopting the first Carbon Plan. The order recognizes the value of an “all-of-the-above” approach to achieving CO2 emission reductions and established a set of near-term procurement and development activities needed to continue progress towards the targeted CO2 reductions, along with the schedule for the future biennial updates to the Carbon Plan. The approved near-term action plan includes procurement and development of solar, storage and hydrogen-capable natural gas generation at levels consistent with the Proposed Plan, along with upgrading key transmission facilities to strengthen the grid, improve resilience for customers and interconnect new solar generation and stakeholder engagement 122 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued)activities for onshore wind generation (in all cases, subject to any further applicable regulatory processes). The order also approved early development activities for long lead-time resources, including new nuclear, pumped-hydro storage and offshore wind transmission development. The NCUC affirmed the utility ownership structure required in HB 951; all new generation facilities or other resources selected by the NCUC to achieve the CO2 emission reductions shall be owned and recovered on a cost-of-service basis by the utilities, with a carveout for 45% of solar and solar plus storage generation to be procured through long-term purchase power agreements with third parties. The order approves continued utilization of the remaining coal-fired generation assets, ensuring that appropriate replacement generating units and associated transmission infrastructure are in service before existing generating units are retired and providing an orderly transition out of coal generation by 2035. Storm Cost Securitization Legislation On June 15, 2022, the South Carolina General Assembly unanimously adopted S. 1077 (Act 227) in both the House and Senate and the bill was signed into law on June 17, 2022. The legislation enables the PSCSC to permit the issuance of bonds for the payment of storm costs and the creation of a storm charge for repayment. On August 5, 2022, Duke Energy Progress filed a petition with the PSCSC for review and approval of deferred storm costs to be securitized of approximately $223 million. The evidentiary hearing is scheduled to begin on or after March 1, 2023. On February 7, 2023, a stipulation was reached with all parties in the proceeding regarding certain items identified through the Office of Regulatory Staff (ORS) audit of storm costs. The final amount for securitization will depend on the outcome of the hearing. Duke Energy Progress cannot predict the outcome of this matter. 123 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued)Duke Energy Carolinas Regulatory Assets and Liabilities The following tables present the regulatory assets and liabilities recorded on Duke Energy Carolinas’ Consolidated Balance Sheets. (in millions) Regulatory Assets(a) AROs – coal ash Deferred fuel and purchased power(i) Accrued pension and OPEB(c) Storm cost securitized balance, net Storm cost deferrals Hedge costs deferrals(c) PISCC and deferred operating expenses(c) Retired generation facilities(c) Deferred asset – Lee COLA AMI Customer connect project Vacation accrual Incremental COVID-19 expenses Nuclear deferral COR settlement Deferred coal ash handling system costs Other Total regulatory assets Less: current portion Total noncurrent regulatory assets Regulatory Liabilities(a) Net regulatory liability related to income taxes(d) Costs of removal(c) AROs – nuclear and other Hedge cost deferrals Accrued pension and OPEB(c) Provision for rate refunds Other Total regulatory liabilities Less: current portion Total noncurrent regulatory liabilities December 31, Earns/Pays a Return Recovery/Refund Period Ends 2021 2022 $ 1,391 1,614 614 220 93 228 30 39 267 139 62 84 127 90 88 67 235 5,388 1,095 $ 1,227 339 365 232 22 171 31 54 296 140 66 83 51 78 91 67 166 3,479 544 $ 4,293 $ 2,935 $ 2,475 1,769 1,038 350 44 50 587 6,313 $ 2,785 2,009 2,053 209 44 124 461 7,685 530 487 $ 5,783 $ 7,198 (g) (e) Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes (b) 2024 (h) 2041 (b) (b) (b) (b) (b) (b) (b) 2023 (b) 2024 (b) (b) (b) (b) (f) (b) (b) (h) (b) (b) Included in rate base. Includes regulatory liabilities related to the change in the federal tax rate as a result of the Tax Act and the change in the North Carolina tax rate, both discussed in Note 24. Portions are included in rate base. (a) Regulatory assets and liabilities are excluded from rate base unless otherwise noted. (b) The expected recovery or refund period varies or has not been determined. (c) (d) (e) Pays interest on over-recovered costs in North Carolina. Includes certain purchased power costs in North Carolina and South Carolina and costs of distributed energy in South Carolina. (f) Recovered over the life of the associated assets. (g) Earns a debt and equity return on coal ash expenditures for North Carolina and South Carolina retail customers as permitted by various regulatory orders. (h) Recovered primarily over the average remaining service periods or life expectancies of employees covered by the benefit plans. See Note 23 for additional detail. (i) Duke Energy Carolinas submitted a fuel filing to the NCUC in May 2022 for recovery of $327 million, which included deferrals through January 2022. This amount is expected to be recovered through August 2023. The next filing will be made in the first quarter of 2023. Duke Energy Carolinas submitted a fuel filing to the PSCSC in July 2022 for recovery of $79 million, which included deferrals through May 2022. The amount is expected to be recovered through September 2023. The next filing will be made in the third quarter of 2023. 124 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued)2023 North Carolina Rate Case On January 19, 2023, Duke Energy Carolinas filed a PBR application with the NCUC to request an increase in base rate retail revenues. The PBR Application includes an MYRP to recover projected capital investments during the three year MYRP period. In addition to the MYRP, the PBR Application includes an Earnings Sharing Mechanism, Residential Decoupling Mechanism and Performance Incentive Mechanisms as required by HB 951. If approved, the overall retail revenue increase would be $501 million in Year 1, $172 million in Year 2 and $150 million in Year 3, for a combined total of $823 million or 15.7% by early 2026. The rate increase is driven primarily by major transmission and distribution investments since the last rate case and projected in the MYRP, as well as investments in energy storage and solar assets included in the MYRP consistent with the Carbon Plan. Duke Energy Carolinas plans to implement temporary rates, subject to refund, on September 1, 2023, and has requested permanent rates be effective by January 1, 2024. Duke Energy Carolinas cannot predict the outcome of this matter. 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 and claimed that Duke Energy Carolinas did not satisfy the National Environmental Policy Act (NEPA) of 1969, as amended, or the NRC’s NEPA-implementing regulations. Following Duke Energy Carolinas’ answer and the Petitioners’ reply, 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 SLR appeal related to Florida Power and Light’s Turkey Point nuclear generating station in Florida. The NRC 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. Although 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 supplement to its environmental report providing information on environmental impacts during the SLR period prior to the rulemaking being completed. On November 7, 2022, Duke Energy Carolinas submitted a supplement to its environmental report addressing environmental impacts during the SLR period. On December 19, 2022, the NRC published a notice in the Federal Register that the NRC will conduct a limited scoping process to gather additional information necessary to prepare an environmental impact statement (EIS) to evaluate the environmental impacts at ONS during the SLR period. The NRC received comments from the EPA and the Petitioners and these comments identify eighteen potential impacts that should be considered by the NRC in the EIS, which include, but are not limited to, climate change and flooding, environmental justice, severe accidents, and external events. Currently, the NRC expects to publish a draft EIS in October 2023. On December 19, 2022, the NRC issued the Safety Evaluation Report (SER) for the safety portion of the SLR application. The NRC determined Duke Energy Carolinas met the requirements of the applicable regulations and identified actions that have been taken or will be taken to manage the effects of aging and address time-limited analyses. Duke Energy Carolinas and the NRC met with the Advisory Committee on Reactor Safeguards (ACRS) on February 2, 2023, to discuss issues regarding the SER and SLR application, after which the ACRS will issue a report discussing the result of its review. Although the NRC’s GEIS applicability 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, although Duke Energy Carolinas cannot guarantee 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 these additional relicensing proceedings. 125 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued)Duke Energy Progress Regulatory Assets and Liabilities The following tables present the regulatory assets and liabilities recorded on Duke Energy Progress’ Consolidated Balance Sheets. (in millions) Regulatory Assets(a) AROs – coal ash AROs – nuclear and other Deferred fuel and purchased power(l) Accrued pension and OPEB(d) Storm cost securitized balance, net Storm cost deferrals Hedge costs deferrals PISCC and deferred operating expenses Retired generation facilities Deferred asset – Harris COLA AMI Customer connect project Vacation accrual Incremental COVID-19 expenses DSM/EE(d) NCEMPA deferrals Nuclear deferral COR settlement Deferred coal ash handling system costs Other Total regulatory assets Less: current portion Total noncurrent regulatory assets Regulatory Liabilities(a) Net regulatory liability related to income taxes(k) Costs of removal(d) Hedge cost deferrals Provision for rate refunds Other Total regulatory liabilities Less: current portion Total noncurrent regulatory liabilities December 31, Earns/Pays a Return Recovery/Refund Period Ends 2021 2022 $ 1,418 869 705 417 720 234 55 42 149 21 81 54 43 78 180 157 64 32 25 70 5,414 $ 1,389 613 303 351 759 170 60 47 171 21 92 57 42 28 218 165 42 32 23 68 4,651 690 533 $ 4,724 $ 4,118 $ 1,559 2,269 252 28 344 4,452 $ 1,695 2,955 155 87 357 5,249 332 381 $ 4,120 $ 4,868 (g) (e) Yes Yes Yes Yes Yes Yes Yes (h) (f) Yes Yes Yes Yes (b) (c) 2024 (j) 2041 (b) (b) 2054 (b) (b) (b) (b) 2023 (b) (h) 2042 2024 (b) (b) (b) (b) (i) (b) (b) (b) Included in rate base. (a) Regulatory assets and liabilities are excluded from rate base unless otherwise noted. (b) The expected recovery or refund period varies or has not been determined. (c) Recovery period for costs related to nuclear facilities runs through the decommissioning period of each unit. (d) (e) Pays interest on over-recovered costs in North Carolina. Includes certain purchased power costs in North Carolina and South Carolina and costs of distributed energy in South Carolina. (f) South Carolina retail allocated costs are earning a return. (g) Earns a debt and equity return on coal ash expenditures for North Carolina and South Carolina retail customers as permitted by various regulatory orders. (h) (i) Recovered over the life of the associated assets. (j) Recovered primarily over the average remaining service periods or life expectancies of employees covered by the benefit plans. See Note 23 for additional detail. (k) (l) Duke Energy Progress submitted a fuel filing to the NCUC in August 2022 for recovery of $251 million, which included deferrals through June 2022. This amount is expected to be recovered through November 2023. The next filing will be made in the second quarter of 2023. Duke Energy Progress submitted a fuel filing to the PSCSC in April 2022 for recovery of $44 million, which included deferrals through February 2022. This amount is expected to be recovered through June 2023. The next filing will be made in the second quarter of 2023. Includes regulatory liabilities related to the change in the federal tax rate as a result of the Tax Act and the change in the North Carolina tax rate, both discussed in Note 24. Portions are included in rate base. Includes incentives on DSM/EE investments and is recovered through an annual rider mechanism. 126 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued)2022 North Carolina Rate Case On October 6, 2022, Duke Energy Progress filed a PBR application with the NCUC to request an increase in base rate retail revenues. The rate request before the NCUC includes an MYRP to recover projected capital investments during the three year MYRP period. In addition to the MYRP, the PBR Application includes an Earnings Sharing Mechanism, Residential Decoupling Mechanism and Performance Incentive Mechanisms as required by HB 951. If approved, the overall retail revenue increase would be $326 million in Year 1, $151 million in Year 2 and $138 million in Year 3, for a combined total of $615 million or 16% by late 2025. The rate increase is driven primarily by major transmission and distribution investments since the last rate case and projected in the MYRP, as well as investments in energy storage and solar assets included in the MYRP consistent with the Carbon Plan. Duke Energy Progress plans to implement temporary rates, subject to refund, on June 1, 2023, and has requested permanent rates be effective by October 1, 2023. The evidentiary hearing has been scheduled to begin on May 1, 2023. Duke Energy Progress cannot predict the outcome of this matter. 2022 South Carolina Rate Case On September 1, 2022, Duke Energy Progress filed an application with the PSCSC to request an increase in base rate retail revenues. On January 12, 2023, Duke Energy Progress and the ORS, as well as other consumer, environmental, and industrial intervening parties, filed a comprehensive Agreement and Stipulation of Settlement resolving all issues in the base rate proceeding. The major components of the stipulation include: • A $52 million annual customer rate increase prior to the reduction from the accelerated return to customers of federal unprotected Property, Plant and Equipment related EDIT. After extending the remaining EDIT giveback to customers to 33 months, the net annual retail rate increase is approximately $36 million. • ROE of 9.6% based upon a capital structure of 52.43% equity and 47.57% debt. • Continuation of deferral treatment of coal ash basin closure costs. Supports an amortization period for remaining coal ash closure costs in this rate case of seven years. Duke Energy Progress agreed not to seek recovery of approximately $50 million of deferred coal ash expenditures related to retired sites in this rate case (South Carolina retail allocation). • Accepts the 2021 Depreciation Study as proposed in this case, as adjusted for certain recommendations from ORS and includes accelerated retirement dates for certain coal units as originally proposed. • Establishment of a storm reserve to help offset the costs of major storms. The PSCSC held a hearing on January 17, 2023, to consider evidence supporting the stipulation and unanimously voted to approve the comprehensive agreement on February 9, 2023. The PSCSC voted to allow Duke Energy Progress to implement new customer rates by April 1, 2023. A final written order is due from the PSCSC by March 1, 2023. 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 ROE component in the demand formula rate in the Power Supply and Coordination Agreement between NCEMC and Duke Energy Progress is unjust and unreasonable. On June 16, 2022, Duke Energy Progress submitted to the FERC an Offer of Settlement and Settlement Agreement (Settlement Agreement) between NCEMC and Duke Energy Progress. The Settlement Agreement provides for an ROE of 10%, effective January 1, 2022, among other contract modifications. On November 7, 2022, the FERC approved the Settlement Agreement. 127 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued)Duke Energy Florida Regulatory Assets and Liabilities The following tables present the regulatory assets and liabilities recorded on Duke Energy Florida’s Consolidated Balance Sheets. (in millions) Regulatory Assets(a) AROs – coal ash AROs – nuclear and other Deferred fuel and purchased power(h) Accrued pension and OPEB(c) Nuclear asset securitized balance, net Storm cost deferrals(c) Hedge costs deferrals(c) Retired generation facilities(c) AMI(c) Customer connect project(c) Costs of removal regulatory asset(c) Qualifying facility contract buyouts(c) Other Total regulatory assets Less: current portion Total noncurrent regulatory assets Net regulatory liability related to income taxes(c) DOE Settlement Other Total regulatory liabilities Less: current portion Total noncurrent regulatory liabilities December 31, Earns/Pays a Return Recovery/Refund Period Ends 2021 $ 2022 11 15 1,355 342 881 325 73 94 30 82 221 81 55 3,565 1,143 $ 10 7 415 374 937 19 77 94 38 67 107 94 49 2,288 497 $ 2,422 $ 1,791 $ $ 633 154 90 877 244 633 $ 699 — 97 796 98 $ 698 (b) (b) 2024 (g) 2036 (b) 2038 2044 2032 2037 (b) 2034 (b) (b) (b) (f) Yes (f) Yes Yes Yes Yes (d) Yes (d) (d) Included in rate base. (a) Regulatory assets and liabilities are excluded from rate base unless otherwise noted. (b) The expected recovery or refund period varies or has not been determined. (c) (d) Certain costs earn/pay a return. (e) Earns a debt return/interest once collections begin. (f) (g) Recovered primarily over the average remaining service periods or life expectancies of employees covered by the benefit plans. See Note 23 for additional detail. (h) Duke Energy Florida submitted a fuel filing to the FPSC in January 2023 for recovery of $795 million, which included the 2022 actual under-recovery of $1.2 billion, offset by projected declining fuel costs in 2023 due to lower Earns commercial paper rate. natural gas prices. The expected recovery period is April 2023 through March 2024. 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%. On July 25, 2022, this provision was triggered. Duke Energy Florida filed a petition with the FPSC on August 12, 2022, to increase the ROE effective August 2022 with a base rate increase effective January 1, 2023. The FPSC approved this request on October 4, 2022. The 2021 Settlement Agreement also provided that Duke Energy Florida will be able to retain the $173 million retail portion of the expected DOE award from its lawsuit to recover spent nuclear fuel to mitigate customer rates over the term of the 2021 Settlement. In return, Duke Energy Florida is permitted to recognize the $173 million into earnings through the approved settlement period. The full amount of the $173 million is expected to be recognized between the years of 2023 and 2024, while also remaining within the approved ROE band. Duke Energy Florida settled the DOE lawsuit and received payment of approximately $180 million on June 15, 2022, of which the retail portion was approximately $154 million. The 2021 Settlement authorizes Duke Energy Florida to collect the difference between $173 million and the $154 million retail portion of the amount received through the capacity cost recovery clause. The 2021 Settlement also contained a provision to recover or flow-back the effects of tax law changes. As a result of the IRA enacted on August 16, 2022, Duke Energy Florida is eligible for PTCs associated with solar facilities placed in 128 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued)service beginning in January 2022. Duke Energy Florida filed a petition with the FPSC on October 17, 2022, to reduce base rates effective January 1, 2023, by $56 million to flow back the expected 2023 PTCs and to flow back the expected 2022 PTCs via an adjustment to the capacity cost recovery clause. On December 14, 2022, the FPSC issued an order approving Duke Energy Florida’s petition. See Note 24 for additional information on the IRA. 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 and the projects are expected to be completed by the end of 2024. This investment will be included in base rates offset by the revenue from the subscription fees and 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. The Supreme Court of Florida heard the oral argument on February 9, 2022. On May 27, 2022, the Supreme Court of Florida issued an order remanding the case back to the FPSC so that the FPSC can amend its order to better address some of the arguments raised by LULAC. On September 23, 2022, the FPSC issued a revised order and submitted it on September 26, 2022, to the Supreme Court of Florida. The Supreme Court of Florida requested that the parties file supplemental briefs regarding the revised order, which were filed February 6, 2023. 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 evidentiary hearing began on August 2, 2022. On October 4, 2022, the FPSC voted to approve Duke Energy Florida’s plan with one modification to remove the transmission loop radially fed program, representing a reduction of approximately $80 million over the 10-year period starting in 2025. On December 9, 2022, the Office of Public Counsel filed a notice of appeal of this order to the Florida Supreme Court. Duke Energy Florida cannot predict the outcome of this matter. Hurricane Ian On September 28, 2022, much of Duke Energy Florida’s service territory was impacted by Hurricane Ian, which caused significant damage resulting in more than 1.1 million outages. Duke Energy Florida’s December 31, 2022 Consolidated Balance Sheets include an estimate of approximately $353 million related to deferred Hurricane Ian storm costs, consistent with the FPSC’s storm rule, in Regulatory assets within Other Noncurrent Assets. After depleting any existing storm reserves, which were approximately $107 million before Hurricane Ian, Duke Energy Florida is permitted to petition the FPSC for recovery of additional incremental operation and maintenance costs resulting from the storm and to replenish the retail customer storm reserve to approximately $132 million. Duke Energy Florida filed its petition for cost recovery of various storms, including Hurricane Ian, and replenishment of the storm reserve on January 23, 2023, seeking recovery of $442 million, for recovery over 12 months beginning with the first billing cycle in April 2023. Duke Energy Florida cannot predict the outcome of this matter. 129 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued)Duke Energy Ohio Regulatory Assets and Liabilities The following tables present the regulatory assets and liabilities recorded on Duke Energy Ohio’s Consolidated Balance Sheets. (in millions) Regulatory Assets(a) AROs – coal ash Deferred fuel and purchased power Accrued pension and OPEB Storm cost deferrals Hedge costs deferrals PISCC and deferred operating expenses(c) AMI Customer connect project CEP deferral Deferred pipeline integrity costs Propane caverns Manufactured gas plant (MGP) Other Total regulatory assets Less: current portion Total noncurrent regulatory assets Regulatory Liabilities(a) Net regulatory liability related to income taxes Costs of removal Accrued pension and OPEB Provision for rate refunds Other Total regulatory liabilities Less: current portion Total noncurrent regulatory liabilities December 31, Earns/Pays a Return Recovery/Refund Period Ends 2021 2022 $ — 54 129 14 2 15 18 54 190 28 26 — 154 684 103 $ $ 581 496 9 21 — 107 633 99 (b) 2023 (e) 2023 (b) 2083 (b) (b) (b) (b) (b) (b) (b) (b) (d) (e) (b) Yes Yes Yes Yes $ $ $ 33 38 133 2 5 16 24 41 161 24 — 104 126 707 72 635 602 39 21 61 78 801 62 $ 534 $ 739 (a) Regulatory assets and liabilities are excluded from rate base unless otherwise noted. (b) The expected recovery or refund period varies or has not been determined. (c) (d) Recovery over the life of the associated assets. (e) Recovered primarily over the average remaining service periods or life expectancies of employees covered by the benefit plans. See Note 23 for additional detail. Included in rate base. 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). The Staff of the PUCO (Staff) report was issued on May 19, 2022, recommending an increase in electric distribution base rates of $2 million to $15 million with an ROE range of 8.84% to 9.85%. On September 19, 2022, Duke Energy Ohio filed a Stipulation and Recommendation with the PUCO, which includes an increase in overall electric distribution base rates of approximately $23 million and an ROE of 9.5%. The stipulation is among all but one party to the proceeding. The PUCO issued an order on December 14, 2022, approving the Stipulation without material modification. Rates went into effect on January 3, 2023. The Ohio Consumers’ Counsel (OCC) filed an application for rehearing on January 13, 2023. On February 8, 2023, the Commission granted the OCC’s application for rehearing for further consideration. 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 130 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued)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. This 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 requested 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. Duke Energy Ohio Natural Gas Base Rate Case Duke Energy Ohio filed with the PUCO a natural gas base rate case application on June 30, 2022, with supporting testimony filed on July 14, 2022, requesting an increase in natural gas base rates of approximately $49 million and an ROE of 10.3%. This is an approximate 5.6% 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 natural gas base rate case in 2012. Duke Energy Ohio is also seeking to adjust the caps on its Capital Expenditure Program Rider (CEP Rider). The Staff of the PUCO (Staff) report was issued on December 21, 2022, recommending an increase in natural gas base rates of $24 million to $36 million, with an equity ratio of 52% and an ROE range of 9.03% to 10.04%. A procedural schedule was issued on December 22, 2022, scheduling the evidentiary hearing to commence on March 28, 2023. 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, with a total cost of approximately $170 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. 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 Consolidated Statements of Operations for the year ended December 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. On June 15, 2022, the PUCO granted the rehearing requests of Interstate Gas Supply, Inc. (IGS) and The Retail Energy Supply Association (RESA), which were filed on May 20, 2022, for further consideration. 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. 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. 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. The commission granted the rehearing requests of IGS and RESA for further consideration. 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 for several decades. Once the Central Corridor Project was complete and placed in service, the propane peaking facilities were no longer necessary and were 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 for the year ended December 31, 2021. A Stipulation and Recommendation was filed jointly 131 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued)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 natural gas base rate case proceeding with a proposed amortization period of at least 10 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. An evidentiary hearing was held on September 8, 2022. On October 5, 2022, the PUCO issued an order approving the Stipulation and Recommendation as filed. As a result of the order, Duke Energy Ohio recorded a reversal of $12 million to Impairment of assets and other charges on the Consolidated Statements of Operations and Comprehensive Income for the year ended December 31, 2022. Duke Energy Kentucky Electric Base Rate Case On December 1, 2022, Duke Energy Kentucky filed a rate case with the KPSC requesting an annualized increase in electric base rates of approximately $75 million and an ROE of 10.35%. This is an overall increase in rates of approximately 17.8%. The request for rate increase is driven by capital investments to strengthen the electricity generation and delivery systems along with adjusted depreciation rates for the East Bend and Woodsdale generation stations to support the energy transition. Duke Energy Kentucky is also requesting new programs and tariff updates, including a voluntary community-based renewable subscription program and two EV charging programs. A procedural schedule was issued on December 19, 2022, scheduling the evidentiary hearing for May 9, 2023. New rates are anticipated to go into effect around July 15, 2023. Duke Energy Kentucky cannot predict the outcome of this matter. 132 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued)Duke Energy Indiana Regulatory Assets and Liabilities The following tables present the regulatory assets and liabilities recorded on Duke Energy Indiana’s Consolidated Balance Sheets. (in millions) Regulatory Assets(a) AROs – coal ash Deferred fuel and purchased power Accrued pension and OPEB Hedge costs deferrals PISCC and deferred operating expenses(c) Retired generation facilities(c) AMI Customer connect project Other Total regulatory assets Less: current portion Total noncurrent regulatory assets Regulatory Liabilities(a) Net regulatory liability related to income taxes Costs of removal Hedge cost deferrals Accrued pension and OPEB Other Total regulatory liabilities Less: current portion Total noncurrent regulatory liabilities December 31, Earns/Pays a Return Recovery/Refund Period Ends 2021 $ $ $ 2022 385 138 214 20 255 34 15 19 44 1,124 249 875 840 531 81 104 85 1,641 187 (b) 2023 (e) (b) (b) 2030 2031 (b) (b) (b) (d) (b) (e) (b) Yes Yes Yes $ 749 158 222 35 262 38 17 11 63 1,555 277 $ 1,278 $ 908 575 — 113 96 1,692 127 $ 1,454 $ 1,565 (a) Regulatory assets and liabilities are excluded from rate base unless otherwise noted. (b) The expected recovery or refund period varies or has not been determined. (c) (d) Refunded over the life of the associated assets. (e) Recovered primarily over the average remaining service periods or life expectancies of employees covered by the benefit plans. See Note 23 for additional detail. Included in rate base. 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. 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% was 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 estimated to be the remaining 25% of the total rate increase were approved on July 28, 2021, and implemented in August 2021. Several groups appealed the IURC order to the Indiana Court of Appeals. The Indiana Court of Appeals affirmed the IURC decision on May 13, 2021. However, upon appeal by the Indiana Office of Utility Consumer Counselor (OUCC) and the Duke Industrial Group on March 10, 2022, the Indiana Supreme Court found 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 Consolidated Statements of Operations for the year ended December 31, 2022. Duke Energy Indiana filed a request for rehearing with the Supreme Court on April 11, 2022, which the court denied on May 26, 2022. Duke Energy Indiana filed its testimony in the remand proceeding on August 18, 2022. An evidentiary hearing is scheduled to begin March 3, 2023. Duke Energy Indiana cannot predict the outcome of this matter. 133 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued)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 and the Duke Industrial Group appealed. The Indiana Court of Appeals issued its opinion on February 21, 2023, reversing the IURC’s order to the extent that it allowed Duke Energy Indiana to recover federally mandated costs incurred prior to the IURC’s November 3, 2021 order. In addition, the court found that any costs incurred pre-petition to determine federally mandated compliance options were not specifically authorized by the statute and should also be disallowed. Duke Energy Indiana is assessing its appellate options and must file a petition to transfer to the Indiana Supreme Court by April 7, 2023. As a result of the court’s opinion, Duke Energy Indiana recognized a pretax charge of approximately $175 million to Impairment of Piedmont Regulatory Assets and Liabilities assets and other charges for the year ended December 31, 2022. Duke Energy Indiana cannot predict the outcome of this matter. TDSIC 2.0 On November 23, 2021, Duke Energy Indiana filed for approval of the Transmission, Distribution, Storage Improvement Charge 2.0 investment plan for 2023-2028 (TDSIC 2.0). On June 15, 2022, the IURC approved, without modification, TDSIC 2.0, which includes approximately $2 billion in transmission and distribution investments selected to improve customer reliability, harden and improve resiliency of the grid, enable expansion of renewable and distributed energy projects and encourage economic development. In addition, the IURC set up a subdocket to consider the targeted economic development project, which the IURC approved on March 2, 2022. On July 15, 2022, the OUCC filed a notice of appeal to the Indiana Court of Appeals in Duke Energy Indiana’s TDSIC 2.0 proceeding. An appellant brief was filed on October 28, 2022, and Duke Energy Indiana filed its responsive brief on December 28, 2022. Duke Energy Indiana cannot predict the outcome of this matter. The following tables present the regulatory assets and liabilities recorded on Piedmont’s Consolidated Balance Sheets. (in millions) Regulatory Assets(a) AROs – nuclear and other Accrued pension and OPEB(c) Vacation accrual Derivatives – natural gas supply contracts(f) Deferred pipeline integrity costs(c) Amounts due from customers Other Total regulatory assets Less: current portion Total noncurrent regulatory assets Regulatory Liabilities(a) Net regulatory liability related to income taxes Costs of removal(c) Other Total regulatory liabilities Less: current portion Total noncurrent regulatory liabilities December 31, 2022 Earns/Pays a Return Recovery/Refund Period Ends 2021 $ $ 27 119 12 168 93 57 35 511 119 392 $ 459 573 66 1,098 74 $ 1,024 $ $ 22 82 12 139 84 85 33 457 141 316 $ 510 572 32 1,114 56 $ 1,058 (e) (e) (d) (g) 2023 2025 (b) (b) (b) (d) (b) Included in rate base. (a) Regulatory assets and liabilities are excluded from rate base unless otherwise noted. (b) The expected recovery or refund period varies or has not been determined. (c) (d) Recovery over the life of the associated assets. (e) Certain costs earn/pay a return. (f) Balance will fluctuate with changes in the market. Current contracts extend into 2031. (g) Recovered primarily over the average remaining service periods or life expectancies of employees covered by the benefit plans. See Note 23 for additional detail. 134 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued) 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. An evidentiary hearing was held on August 15, 2022. On September 15, 2022, the PSCSC delivered its decision, which included an ROE of 9.3% and a capital structure of 52.2% equity and 47.8% debt and issued its final order on October 6, 2022. Revised customer rates became effective in October 2022 and resulted in a rate decrease for retail customers of approximately $1 million. Tennessee Annual Review Mechanism On October 10, 2022, the TPUC approved Piedmont’s petition to adopt an Annual Review Mechanism (ARM) as allowed by Tennessee law. Under the ARM, Piedmont will adjust rates annually to achieve its allowed 9.80% ROE over the upcoming year and to true up any variance between its allowed ROE and actual ROE from the prior calendar year. The initial year subject to the true up is 2022, and the initial rate adjustments request will be filed in May 2023 for rates effective October 1, 2023. OTHER REGULATORY MATTERS Atlantic Coast Pipeline, LLC Atlantic Coast Pipeline (ACP pipeline) was planned to be an approximately 600-mile interstate natural gas pipeline running from West Virginia to North Carolina. Duke Energy indirectly owns a 47% interest, which is accounted for as an equity method investment through its Gas Utilities and Infrastructure segment. As a result of the uncertainty created by various legal rulings, the potential impact on the cost and schedule for the project, the ongoing legal challenges and the risk of additional legal challenges and delays through the construction period and Dominion’s decision to sell substantially all of its gas transmission and storage segment assets, Duke Energy’s Board of Directors and management decided that it was not prudent to continue to invest in the project. On July 5, 2020, Duke Energy and Dominion announced the cancellation of the ACP pipeline project. As part of the pretax charges to earnings of approximately $2.1 billion recorded for the year ended December 31, 2020, within Equity in earnings (losses) of unconsolidated affiliates on the Duke Energy Consolidated Statements of Operations, Duke Energy established liabilities related to the cancellation of the ACP pipeline project. In February 2021, Duke Energy paid approximately $855 million to fund ACP’s outstanding debt, relieving Duke Energy of its guarantee. At December 31, 2022, there is $59 million and $47 million within Other Current Liabilities and Other Noncurrent Liabilities, respectively, in the Gas Utilities and Infrastructure segment. The liabilities represent Duke Energy’s obligation of approximately $106 million to satisfy remaining ARO requirements to restore construction sites. See Notes 8 and 13 for additional information regarding this transaction. 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. The NCUC concluded in its Carbon Plan order that the projected retirements dates presented by Duke Energy Carolinas and Duke Energy Progress in their Carbon Plan for coal-fired generating facilities were reasonable for planning purposes and further directed that appropriate steps be taken to optimally retire the coal fleet according to such schedule. 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. 135 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued)The table below contains the net carrying value of generating facilities planned for retirement or included in recent IRPs or Carbon Plan as evaluated for potential retirement. Dollar amounts in the table below are included in Net property, plant and equipment on the Consolidated Balance Sheets as of December 31, 2022, and exclude capitalized asset retirement costs. Duke Energy Carolinas Allen Steam Station Unit 1(a) Allen Steam Station Unit 5(b) Cliffside Unit 5(b) Marshall Units 1-2(b) Duke Energy Progress Mayo Unit 1(b) Roxboro Units 3-4(b) Duke Energy Florida Crystal River Units 4-5(c) Duke Energy Indiana Gibson Units 1-5(d) Cayuga Units 1-2(d) Total Duke Energy Capacity (in MW) Remaining Net Book Value (in millions) 167 259 546 760 713 1,409 1,442 2,845 1,005 9,146 $ 10 233 344 428 639 425 1,549 2,043 622 $ 6,293 (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. (b) These units were included in the IRP filed by Duke Energy Carolinas and Duke Energy Progress in South Carolina on September 1, 2020, and in the Carbon Plan adopted by the NCUC in December 2022. The long-term energy options considered 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. The remaining net book value reflected in the table above excludes $200 million of accelerated deprecation collected from retail customers pursuant to Duke Energy Florida’s 2017 Settlement. (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. 5. COMMITMENTS AND CONTINGENCIES INSURANCE General Insurance The Duke Energy Registrants have insurance and reinsurance coverage either directly or through indemnification from Duke Energy’s captive insurance company, Bison, and its affiliates, consistent with companies engaged in similar commercial operations with similar type properties. The Duke Energy Registrants’ coverage includes (i) commercial general liability coverage for liabilities arising to third parties for bodily injury and property damage; (ii) workers’ compensation; (iii) automobile liability coverage; and (iv) property coverage for all real and personal property damage. Real and personal property damage coverage excludes electric transmission and distribution lines, but includes damages arising from boiler and machinery breakdowns, earthquakes, flood damage and extra expense, but not outage or replacement power coverage. All coverage is subject to certain deductibles or retentions, sublimits, exclusions, terms and conditions common for companies with similar types of operations. The Duke Energy Registrants self-insure their electric transmission and distribution lines against loss due to storm damage and other natural disasters. As discussed further in Note 4, Duke Energy Florida maintains a storm damage reserve and has a regulatory mechanism to recover the cost of named storms on an expedited basis. The cost of the Duke Energy Registrants’ coverage can fluctuate from year to year reflecting claims history and conditions of the insurance and reinsurance markets. In the event of a loss, terms and amounts of insurance and reinsurance available might not be adequate to cover claims and other expenses incurred. Uninsured losses and other expenses, to the extent not recovered by other sources, could have a material effect on the Duke Energy Registrants’ results of operations, cash flows or financial position. Each company is responsible to the extent losses may be excluded or exceed limits of the coverage available. Nuclear Insurance Duke Energy Carolinas owns and operates McGuire and Oconee and operates and has a partial ownership interest in Catawba. McGuire and Catawba each have two reactors. Oconee has three reactors. The other joint owners of Catawba reimburse Duke Energy Carolinas for certain expenses associated with nuclear insurance per the Catawba joint owner agreements. Duke Energy Progress owns and operates Robinson, Brunswick and Harris. Robinson and Harris each have one reactor. Brunswick has two reactors. Duke Energy Florida owns Crystal River Unit 3, which permanently ceased operation in 2013 and achieved a SAFSTOR condition in July 2019. On October 1, 2020, Crystal River Unit 3 changed decommissioning strategies from SAFSTOR to DECON. 136 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued)In the event of a loss, terms and amounts of insurance available might not be adequate to cover property damage and other expenses incurred. Uninsured losses and other expenses, to the extent not recovered by other sources, could have a material effect on Duke Energy Carolinas’, Duke Energy Progress’ and Duke Energy Florida’s results of operations, cash flows or financial position. Each company is responsible to the extent losses may be excluded or exceed limits of the coverage available. Nuclear Liability Coverage The Price-Anderson Act requires owners of nuclear reactors to provide for public nuclear liability protection per nuclear incident up to a maximum total financial protection liability. The maximum total financial protection liability, which is approximately $13.7 billion, is subject to change every five years for inflation and for the number of licensed reactors. Total nuclear liability coverage consists of a combination of private primary nuclear liability insurance coverage and a mandatory industry risk-sharing program to provide for excess nuclear liability coverage above the maximum reasonably available private primary coverage. The U.S. Congress could impose revenue-raising measures on the nuclear industry to pay claims. Primary Liability Insurance Duke Energy Carolinas and Duke Energy Progress have purchased the maximum reasonably available private primary nuclear liability insurance as required by law, which is $450 million per station. Duke Energy Florida has purchased $100 million primary nuclear liability insurance for Crystal River in compliance with the law. Excess Liability Program This program provides $13.2 billion of coverage per incident through the Price-Anderson Act’s mandatory industrywide excess secondary financial protection program of risk pooling. This amount is the product of potential cumulative retrospective premium assessments of $138 million times the current 96 licensed commercial nuclear reactors in the U.S. Under this program, operating unit licensees could be assessed retrospective premiums to compensate for public nuclear liability damages in the event of a nuclear incident at any licensed facility in the U.S. Retrospective premiums may be assessed at a rate not to exceed $20.5 million per year per licensed reactor for each incident. The assessment may be subject to state premium taxes. Nuclear Property and Accidental Outage Coverage Duke Energy Carolinas, Duke Energy Progress and Duke Energy Florida are members of Nuclear Electric Insurance Limited (NEIL), an industry mutual insurance company, which provides property damage, nuclear accident decontamination and premature decommissioning insurance for each station for losses resulting from damage to its nuclear plants, either due to accidents or acts of terrorism. Additionally, NEIL provides accidental outage coverage for losses in the event of a major accidental outage at an insured nuclear station. Pursuant to regulations of the NRC, each company’s property damage insurance policies provide that all proceeds from such insurance be applied, first, to place the plant in a safe and stable condition after a qualifying accident and second, to decontaminate the plant before any proceeds can be used for decommissioning, plant repair or restoration. Losses resulting from acts of terrorism are covered as common occurrences, such that if terrorist acts occur against one or more commercial nuclear power plants insured by NEIL within a 12-month period, they would be treated as one event and the owners of the plants where the act occurred would share one full limit of liability. The full limit of liability is currently $3.2 billion. NEIL sublimits the total aggregate for all of their policies for non-nuclear terrorist events to approximately $1.8 billion. Each nuclear facility has accident property damage, nuclear accident decontamination and premature decommissioning liability insurance from NEIL with limits of $1.5 billion, except for Crystal River Unit 3. Crystal River Unit 3’s limit is $50 million and is on an actual cash value basis. All nuclear facilities except for Catawba and Crystal River Unit 3 also share an additional $1.25 billion nuclear accident insurance limit above their dedicated underlying limit. This shared additional excess limit is not subject to reinstatement in the event of a loss. Catawba has a dedicated $1.25 billion of additional nuclear accident insurance limit above its dedicated underlying limit. Catawba and Oconee also have an additional $750 million of non-nuclear accident property damage limit. All coverages are subject to sublimits and significant deductibles. NEIL’s Accidental Outage policy provides some coverage, similar to business interruption, for losses in the event of a major accident property damage outage of a nuclear unit. Coverage is provided on a weekly limit basis after a significant waiting period deductible and at 100% of the applicable weekly limits for 52 weeks and 80% of the applicable weekly limits for up to the next 110 weeks. Coverage is provided until these applicable weekly periods are met, where the accidental outage policy limit will not exceed $490 million for Catawba, McGuire, Harris, Brunswick, Oconee and Robinson. NEIL sublimits the accidental outage recovery up to the first 104 weeks of coverage not to exceed $328 million from non-nuclear accidental property damage. Coverage amounts decrease in the event more than one unit at a station is out of service due to a common accident. All coverages are subject to sublimits and significant deductibles. Potential Retroactive Premium Assessments In the event of NEIL losses, NEIL’s board of directors may assess member companies’ retroactive premiums of amounts up to 10 times their annual premiums for up to six years after a loss. NEIL has never exercised this assessment. The maximum aggregate annual retrospective premium obligations for Duke Energy Carolinas, Duke Energy Progress and Duke Energy Florida are $151 million, $93 million and $1 million, respectively. Duke Energy Carolinas’ maximum assessment amount includes 100% of potential obligations to NEIL for jointly owned reactors. Duke Energy Carolinas would seek reimbursement from the joint owners for their portion of these assessment amounts. 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 of the Duke Energy Registrants. Remediation Activities In addition to AROs recorded as a result of various environmental regulations, discussed in Note 10, 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 137 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued)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 in the 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 Consolidated Balance Sheets. (in millions) December 31, 2022 December 31, 2021 Reserves for Environmental Remediation Duke Energy Duke Energy Carolinas Progress Energy Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana Piedmont $ 84 22 19 8 11 33 3 7 $ 88 19 23 11 11 34 4 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 plaintiffs agreed to voluntarily dismiss the suit and the parties subsequently filed a joint stipulation of voluntary dismissal with prejudice on April 29, 2022, ending this litigation. Texas Storm Uri Tort Litigation Duke Energy Corporation and several Duke Energy renewables project companies in the ERCOT market were named in more than thirty lawsuits arising out of Texas Storm Uri, which occurred in February 2021. Duke Energy Corporation was dismissed from the suits, leaving two suits in which individual wind and solar projects are named. These lawsuits seek recovery for property damages, personal injury and wrongful death allegedly caused by the power outages that plaintiffs claim were the collective failure of generators, transmission and distribution utilities (“TDUs”), retail energy providers, natural gas providers, co-ops and municipalities that generate power and ERCOT, all of which were originally sued by all plaintiffs. The cases were consolidated into a Texas state court multidistrict litigation (MDL) proceeding for discovery and pre-trial motions. Five cases were designated for motions to dismiss and all other cases were stayed. On January 28, 2023, the Court denied the generators’ and TDUs’ motions to dismiss the negligence claims but dismissed the tortious interference and conspiracy claims. The motions to dismiss ERCOT and the natural gas defendants were also granted. The generator and TDU defendants filed a petition for mandamus in each of the five cases seeking to overturn the denials on February 10, 2023. If the Texas Court of Appeals accepts the appeals, it will set a briefing schedule. The remaining cases that are part of the MDL are currently stayed, except that plaintiffs have been given leave to amend their pleadings. Plaintiffs began amending existing lawsuits and filing new lawsuits on behalf of hundreds of plaintiffs against hundreds of defendants, including in some cases, by again naming Duke Energy Corporation and naming, for the first time, Duke Energy Renewables, LLC. Plaintiffs have also re-named ERCOT as a defendant. As new cases are served, they are being brought into the MDL and are subject to the stay in the MDL proceeding. Duke Energy cannot predict the outcomes of these matters. See Note 2 for more information related to the sale of the Commercial Renewables Disposal Groups. 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. 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. Discovery has commenced and is scheduled to be completed on or before August 23, 2023. The parties are preparing for mediation, which is scheduled for March 22, 2023. Dispositive motions are due to be filed by September 6, 2023, and the case is scheduled to be trial-ready by October 2, 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 138 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued)(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 sought 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. Both NTE’s and Duke Energy Carolinas’ motions to dismiss were subsequently denied by the court. On May 21, 2020, in response to an 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. Following completion of discovery, 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. On June 24, 2022, the court issued an order partially granting Duke Energy Carolinas’ motion by dismissing NTE’s counterclaims that Duke Energy Carolinas engaged in anti-competitive behavior in violation of state and federal statutes. On October 12, 2022, the parties executed a settlement agreement with respect to the remaining breach of contract claims in the litigation and a Stipulation of Dismissal was filed with the court on October 13, 2022. On November 11, 2022, NTE filed its Notice of Appeal to the U.S. Court of Appeals for the Fourth Circuit as to the District Court’s summary judgment ruling in Duke Energy Carolinas’ favor on NTE’s antitrust and unfair competition claims. Briefing on NTE’s appeal will be completed on May 3, 2023. 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 $457 million and $501 million at December 31, 2022, and 2021, respectively. These reserves are classified in Other within Other Noncurrent Liabilities and Other within Current Liabilities on the Consolidated Balance Sheets. The change in the reserves is a result of a third-party study completed in 2021 as well as settlements made throughout the year. These reserves are based upon Duke Energy Carolinas’ best estimate for current and future asbestos claims through 2042 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 2042 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 $595 million and $644 million at December 31, 2022, and 2021, respectively. These amounts are classified in Other within Other Noncurrent Assets and Receivables within Current Assets on the 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 for the asbestos-related injuries and damages is $12 million for Duke Energy and Duke Energy Carolinas as of December 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 would receive damages for costs incurred between 2014 and 2018 and would 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 would receive damages for costs incurred between 2014 and 2018 and would be able to submit costs incurred in 2019 and 2020 pursuant to an audit process. In June 2022, Duke Energy Florida received $180 million in proceeds that related to damages incurred in 2014 through 2018. 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. Briefing on the appeal was completed on December 13, 2021. 139 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued)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 proceeding with surface impoundment closure at its Indiana sites consistent with EPA’s guidance, the federal CCR rule, and Indiana law, as applicable. On April 21, 2022, HEC filed a motion requesting 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, which IDEM supported, and the court granted the Motion to Dismiss on July 8, 2022. Coal Ash Insurance Coverage Litigation In June 2022, Duke Energy Indiana filed a civil action in Indiana Superior Court against various insurance companies seeking declaratory relief with respect to insurance coverage for coal combustion residuals-related expenses and liabilities covered by third-party liability insurance policies. The insurance policies cover the 1969-1972 and 1984-1985 periods and provide third-party liability insurance for claims and suits alleging property damage, bodily injury and personal injury (or a combination thereof). A trial date has not yet been set. 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 for the years presented. Reserves are classified on the 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 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. See Note 8 for more information. Purchase Obligations Purchased Power Duke Energy Progress, Duke Energy Florida and Duke Energy Ohio have ongoing purchased power contracts, including renewable energy contracts, with other utilities, wholesale marketers, co-generators and qualified facilities. These purchased power contracts generally provide for capacity and energy payments. In addition, Duke Energy Progress and Duke Energy Florida have various contracts to secure transmission rights. The following table presents executory purchased power contracts with terms exceeding one year, excluding contracts classified as leases. (in millions) Duke Energy Progress(a) Duke Energy Florida(b) Duke Energy Ohio(c) Minimum Purchase Amount at December 31, 2022 Contract Expiration 2028-2032 2024-2025 2024 $ 2023 22 300 55 $ 2024 21 267 36 $ 2025 22 91 — $ 2026 18 — — 2027 Thereafter $ 19 — — $ 27 — — $ Total 129 658 91 (a) Contracts represent between 18% and 100% of net plant output. (b) Contracts represent 100% of net plant output. (c) Share of net plant output varies. Excludes PPA with OVEC. Gas Supply and Capacity Contracts Duke Energy Ohio and Piedmont routinely enter into long-term natural gas supply commodity and capacity commitments and other agreements that commit future cash flows to acquire services needed in their businesses. These commitments include pipeline and storage capacity contracts and natural gas supply contracts to provide service to customers. Costs arising from the natural gas supply commodity and capacity commitments, while significant, are pass- through costs to customers and are generally fully recoverable through the fuel adjustment or PGA procedures and prudence reviews in North Carolina and South Carolina and under the Tennessee Incentive Plan in Tennessee. In the Midwest, these costs are recovered via the Gas Cost Recovery Rate in Ohio or the Gas Cost Adjustment Clause in Kentucky. The time periods for fixed payments under pipeline and storage capacity contracts are up to 20 years. The time periods for fixed payments under natural gas supply contracts are up to four years. The time period for the natural gas supply purchase commitments is up to nine years. Certain storage and pipeline capacity contracts require the payment of demand charges that are based on rates approved by the FERC in order to maintain rights to access the natural gas storage or pipeline capacity on a firm basis during the contract term. The demand charges that are incurred in each period are recognized in the Consolidated Statements of Operations and Comprehensive Income as part of natural gas purchases and are included in Cost of natural gas. 140 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued)The following table presents future unconditional purchase obligations under natural gas supply and capacity contracts as of December 31, 2022. (in millions) Duke Energy Ohio Piedmont 6. LEASES 2023 85 319 $ 2024 101 313 $ 2025 85 267 $ 2026 56 213 $ 2027 52 203 $ Thereafter $ 616 587 Total $ 995 1,902 As part of its operations, Duke Energy leases certain aircraft, space on communication towers, industrial equipment, fleet vehicles, fuel transportation (barges and railcars), land and office space under various terms and expiration dates. Additionally, Duke Energy Carolinas, Duke Energy Progress and Duke Energy Indiana have finance leases related to firm natural gas pipeline transportation capacity. Duke Energy Progress and Duke Energy Florida have entered into certain PPAs, which are classified as finance and operating leases. Duke Energy has certain lease agreements, which include variable lease payments that are based on the usage of an asset. These variable lease payments are not included in the measurement of the ROU assets or operating lease liabilities on the Consolidated Financial Statements. Certain Duke Energy lease agreements include options for renewal and early termination. The intent to renew a lease varies depending on the lease type and asset. Renewal options that are reasonably certain to be exercised are included in the lease measurements. The decision to terminate a lease early is dependent on various economic factors. No termination options have been included in any of the lease measurements. Duke Energy Carolinas entered into a sale-leaseback arrangement in December 2019, to construct and occupy an office tower. The lease agreement was evaluated as a sale-leaseback of real estate and it was determined that the transaction did not qualify for sale-leaseback accounting. As a result, the The following tables present the components of lease expense. transaction is being accounted for as a financing. For this transaction, Duke Energy Carolinas will continue to record the real estate on the Consolidated Balance Sheets within Property, Plant and Equipment as if it were the legal owner and will continue to recognize depreciation expense over the estimated useful life. In addition, the failed sale-leaseback obligation is reported within Long-Term Debt on the Consolidated Balance Sheets, with the monthly lease payments commencing after the construction phase being split between interest expense and principal pay down of the debt. Piedmont has certain agreements with Duke Energy Carolinas for the construction and transportation of natural gas pipelines to supply its natural gas plant needs. Piedmont accounts for these pipeline lateral contracts as sales-type leases since the present value of the sum of the lease payments equals the fair value of the assets. These pipeline lateral assets owned by Piedmont had a current net investment basis of $2 million as of December 31, 2022, and 2021, and a long-term net investment basis of $201 million and $203 million as of December 31, 2022, and 2021, respectively. These assets are classified in Other, within Current Assets and Other Noncurrent Assets, respectively, on Piedmont’s Consolidated Balance Sheets. Duke Energy Carolinas accounts for the contracts as finance leases. The activity for these contracts is eliminated in consolidation at Duke Energy. Year Ended December 31, 2022 (in millions) Operating lease expense(a) Short-term lease expense(a) Variable lease expense(a) Finance lease expense Amortization of leased assets(b) Interest on lease liabilities(c) Total finance lease expense Total lease expense Duke Energy Carolinas Progress Energy Duke Energy Progress Duke Energy $ 229 4 61 151 50 201 $ $ 39 — (1) 6 32 38 153 1 60 61 49 110 324 Duke Energy Florida $ 70 1 23 20 4 24 Duke Energy Ohio $ 10 — — — — — Duke Energy Indiana $ 19 2 — — 1 1 Piedmont $ 6 — 1 — — — $ 83 — 37 41 45 86 $ 495 $ 76 $ $206 $118 $ 10 $ 22 $ 7 (a) (b) (c) Included in Operations, maintenance and other or, for barges and railcars, Fuel used in electric generation and purchased power on the Consolidated Statements of Operations. Included in Depreciation and amortization on the Consolidated Statements of Operations. Included in Interest Expense on the Consolidated Statements of Operations. 141 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued) (in millions) Operating lease expense(a) Short-term lease expense(a) Variable lease expense(a) Finance lease expense Amortization of leased assets(b) Interest on lease liabilities(c) Total finance lease expense Total lease expense Year Ended December 31, 2021 Duke Energy $ 245 5 41 219 55 274 Duke Energy Carolinas Progress Energy Duke Energy Progress $ 43 — 17 5 33 38 $ 155 2 22 37 48 85 $ 83 1 10 18 42 60 Duke Energy Florida $ 72 1 12 19 6 25 Duke Energy Ohio $ 11 — — — — — Duke Energy Indiana $ 18 2 — 1 — 1 Piedmont $ 7 — 1 — — — $ 565 $ 98 $ 264 $154 $110 $ 11 $ 21 $ 8 (a) (b) (c) Included in Operations, maintenance and other or, for barges and railcars, Fuel used in electric generation and purchased power on the Consolidated Statements of Operations. Included in Depreciation and amortization on the Consolidated Statements of Operations. Included in Interest Expense on the Consolidated Statements of Operations. The following table presents operating lease maturities and a reconciliation of the undiscounted cash flows to operating lease liabilities. (in millions) 2023 2024 2025 2026 2027 Thereafter Total operating lease payments Less: present value discount Total operating lease liabilities(a) December 31, 2022 Duke Energy Carolinas Progress Energy Duke Energy Progress $ 23 21 14 13 9 37 117 (20) $ 118 110 96 99 73 253 749 (107) $ 64 56 42 45 46 209 462 (76) Duke Energy Florida $ 54 54 54 54 27 44 287 (31) Duke Energy $ 225 207 175 161 134 322 1,224 (169) Duke Energy Ohio Duke Energy Indiana Piedmont $ 2 2 2 2 2 15 25 (7) $ 6 5 5 4 4 45 69 (18) $ 4 4 4 — — 1 13 — $ 1,055 $ 97 $ 642 $ 386 $ 256 $ 18 $ 51 $ 13 (a) Certain operating lease payments include renewal options that are reasonably certain to be exercised. The following table presents finance lease maturities and a reconciliation of the undiscounted cash flows to finance lease liabilities. (in millions) 2023 2024 2025 2026 2027 Thereafter Total finance lease payments Less: amounts representing interest Total finance lease liabilities December 31, 2022 Duke Energy Carolinas Progress Energy Duke Energy Progress $ 38 38 38 38 38 427 617 (333) $ 103 88 85 86 82 555 999 (371) $ 78 79 80 81 81 555 954 (367) Duke Energy $ 198 143 76 77 74 584 1,152 (388) Duke Energy Florida $ 25 9 5 5 1 — 45 (4) Duke Energy Indiana $ 1 1 1 1 1 23 28 (19) $ 764 $ 284 $ 628 $ 587 $ 41 $ 9 142 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued) The following tables contain additional information related to leases. Classification Operating lease ROU assets, net Net property, plant and equipment Duke Energy $ 1,042 810 $ 1,852 Duke Energy Carolinas $ 78 284 $ 362 Progress Energy $ 628 674 $ 1,302 $ 370 590 $ 960 Other current liabilities Current maturities of long-term debt $ Operating lease liabilities Long-Term Debt 179 153 876 611 $ 14 7 $ 96 57 $ 51 35 83 277 546 571 335 552 December 31, 2022 Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana Piedmont $ 258 84 $ 342 $ 45 22 211 19 $ 18 — $ 18 $ 1 — 17 — $ 49 6 $ 55 $ 4 — $ 4 $ 4 — $ — — 47 9 13 — $ 1,819 $ 381 $ 1,270 $ 973 $ 297 $ 18 $ 60 $ 13 Classification Operating lease ROU assets, net Net property, plant and equipment Duke Energy $ 1,136 950 $ 2,086 Other current liabilities Current maturities of long-term debt $ Operating lease liabilities Long-Term Debt 184 151 940 764 Duke Energy Carolinas $ 92 302 $ 394 $ 22 6 78 283 Progress Energy $ 691 729 $ 1,420 $ 94 61 606 629 December 31, 2021 Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana Piedmont $ 389 627 $ 1,016 $ 50 41 350 588 $ 302 102 $ 404 $ 44 20 256 41 $ 19 — $ 19 $ 1 — 18 — $ 53 7 $ 60 $ 4 — 50 10 $ 16 — $ 16 $ 5 — 14 — $ 2,039 $ 389 $ 1,390 $ 1,029 $ 361 $ 19 $ 64 $ 19 (in millions) Assets Operating Finance Total lease assets Liabilities Current Operating Finance Noncurrent Operating Finance Total lease liabilities (in millions) Assets Operating Finance Total lease assets Liabilities Current Operating Finance Noncurrent Operating Finance Total lease liabilities (in millions) Cash paid for amounts included in the measurement of lease liabilities(a) Operating cash flows from operating leases Operating cash flows from finance leases Financing cash flows from finance leases Lease assets obtained in exchange for new lease liabilities (non-cash) Operating(b) Year Ended December 31, 2022 Duke Energy Carolinas Duke Energy Progress Energy Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana Piedmont $ 230 50 151 $ 24 32 6 $ 118 49 61 $ 63 45 41 $ 55 4 20 $ 2 — — $ 6 1 — $ 4 — — $ 111 $ 10 $ — $ — $ — $ — $ — $ — (a) No amounts were classified as investing cash flows from operating leases. (b) Does not include ROU assets recorded as a result of the adoption of the new lease standard. 143 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued)(in millions) Cash paid for amounts included in the measurement of lease liabilities(a) Operating cash flows from operating leases Operating cash flows from finance leases Financing cash flows from finance leases Lease assets obtained in exchange for new lease liabilities (non-cash) Operating(b) Finance Year Ended December 31, 2021 Duke Energy Carolinas Duke Energy Progress Energy Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana Piedmont $ $ 245 55 219 182 322 $ 25 33 5 $ 4 — $ $ 117 48 37 99 322 $ 62 42 18 $ 99 322 $ 55 6 19 $ — — $ 2 — — $ 6 — 1 $ 5 — — $ — — $ — — $ — — (a) No amounts were classified as investing cash flows from operating leases. (b) Does not include ROU assets recorded as a result of the adoption of the new lease standard. Weighted average remaining lease term (years) Operating leases Finance leases Weighted average discount rate(a) Operating leases Finance leases Duke Energy Carolinas Duke Energy Progress Energy December 31, 2022 Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana Piedmont 8 10 10 17 3.4% 7.7% 3.8% 11.5% 8 12 3.6 % 9.1 % 9 12 3.5% 9.1% 6 12 3.8% 8.0% 15 — 15 23 1 — 4.2% —% 4.0% 11.9% 3.3% —% (a) The discount rate is calculated using the rate implicit in a lease if it is readily determinable. Generally, the rate used by the lessor is not provided to Duke Energy and in these cases the incremental borrowing rate is used. Duke Energy will typically use its fully collateralized incremental borrowing rate as of the commencement date to calculate and record the lease. The incremental borrowing rate is influenced by the lessee’s credit rating and lease term and as such may differ for individual leases, embedded leases or portfolios of leased assets. Weighted average remaining lease term (years) Operating leases Finance leases Weighted average discount rate(a) Operating leases Finance leases Duke Energy Carolinas Duke Energy Progress Energy December 31, 2021 Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana Piedmont 8 10 9 18 3.5% 7.3% 3.5 % 11.6 % 8 13 3.6 % 9.0 % 10 13 3.4% 9.0% 7 11 3.8 % 8.2 % 16 — 4.2 % — % 16 24 4.1 % 11.9 % 4 — 3.6% —% (a) The discount rate is calculated using the rate implicit in a lease if it is readily determinable. Generally, the rate used by the lessor is not provided to Duke Energy and in these cases the incremental borrowing rate is used. Duke Energy will typically use its fully collateralized incremental borrowing rate as of the commencement date to calculate and record the lease. The incremental borrowing rate is influenced by the lessee’s credit rating and lease term and as such may differ for individual leases, embedded leases or portfolios of leased assets. 144 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued)7. DEBT AND CREDIT FACILITIES Summary of Debt and Related Terms The following tables summarize outstanding debt and includes debt attributable to the Commercial Renewables Disposal Groups. See Note 2 for further details. (in millions) Unsecured debt, maturing 2023-2082 Secured debt, maturing 2023-2052 First mortgage bonds, maturing 2023-2052(a) Finance leases, maturing 2023-2051(b) Tax-exempt bonds, maturing 2027-2046(c) Notes payable and commercial paper(d) Money pool/intercompany borrowings Fair value hedge carrying value adjustment Unamortized debt discount and premium, net(e) Unamortized debt issuance costs(f) Weighted Average Interest Rate 4.20% 4.11% 3.89% 7.90% 3.84% 4.50% Duke Energy $ 29,585 5,632 32,645 764 1,331 4,582 — (5) 1,016 (383) Total debt 4.09% $ 75,167 Short-term notes payable and commercial paper Short-term money pool/intercompany borrowings Current maturities of long-term debt(g) Total long-term debt(g) (3,952) — (4,154) $ 67,061 Duke Energy Carolinas $ 1,150 1,317 11,306 284 — — 1,533 — (21) (70) $15,499 — (1,233) (1,018) $13,248 December 31, 2022 Progress Energy $ 2,600 2,383 16,350 628 500 — 993 — (40) (132) $ 23,282 — (843) (697) $ 21,742 Duke Energy Progress $ — 1,155 8,776 587 500 — 389 — (23) (59) $ 11,325 — (238) (369) $ 10,718 $ Duke Energy Florida 950 1,228 7,576 41 — — 605 — (16) (70) Duke Energy Ohio $ 1,330 — 1,850 — 77 — 522 — (25) (12) Duke Energy Indiana $ 697 — 3,138 9 352 — 585 — (17) (22) Piedmont $ 3,390 — — — — — 514 — (9) (18) $ 10,314 $ 3,742 $ 4,742 $ 3,877 — (605) (328) $ 9,381 — (497) (475) $ 2,770 — (435) (303) $ 4,004 — (514) (45) $ 3,318 (a) Substantially all electric utility property is mortgaged under mortgage bond indentures. (b) Duke Energy includes $164 million of finance lease purchase accounting adjustments related to Duke Energy Florida related to PPAs that are not accounted for as finance leases in their respective financial statements because of grandfathering provisions in GAAP. (c) Substantially all tax-exempt bonds are secured by first mortgage bonds, letters of credit or the Master Credit Facility. (d) Includes $625 million classified as Long-Term Debt on the Consolidated Balance Sheets due to the existence of long-term credit facilities that backstop these commercial paper balances, along with Duke Energy’s ability and intent to refinance these balances on a long-term basis. The weighted average days to maturity for Duke Energy’s commercial paper program was 15 days. (e) Duke Energy includes $1,057 million and $85 million in purchase accounting adjustments related to Progress Energy and Piedmont, respectively. (f) Duke Energy includes $27 million in purchase accounting adjustments primarily related to the merger with Progress Energy. (g) Refer to Note 18 for additional information on amounts from consolidated VIEs. 145 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued) (in millions) Unsecured debt, maturing 2022-2082 Secured debt, maturing 2022-2052 First mortgage bonds, maturing 2022-2051(a) Finance leases, maturing 2022-2051(b) Tax-exempt bonds, maturing 2027-2041(c) Notes payable and commercial paper(d) Money pool/intercompany borrowings Fair value hedge carrying value adjustment Unamortized debt discount and premium, net(e) Unamortized debt issuance costs(f) Weighted Average Interest Rate 3.71 % 2.50 % 3.87 % 5.81 % 0.65 % 0.35 % Duke Energy $ 24,564 5,584 31,026 915 360 3,929 — 4 1,119 (362) Total debt 3.50 % $ 67,139 Short-term notes payable and commercial paper Short-term money pool/intercompany borrowings Current maturities of long-term debt(g) Total long-term debt(g) (3,304) — (3,387) $ 60,448 December 31, 2021 Duke Energy Carolinas $ 1,150 1,094 10,507 289 — — 526 4 (21) (67) $ 13,482 — (226) (362) $ 12,894 Progress Energy $ 2,250 2,397 15,450 690 48 — 2,959 — (34) (128) $23,632 — (2,809) (1,082) $19,741 Duke Energy Progress $ — 1,120 8,375 629 48 — 322 — (19) (54) $10,421 — (172) (556) $ 9,693 Duke Energy Florida $ 150 1,278 7,075 61 — — 199 — (14) (68) Duke Energy Ohio $ 1,330 — 1,850 — 27 — 128 — (27) (13) Duke Energy Indiana Piedmont $ 700 — 3,219 10 285 — 150 — (18) (23) $ 2,990 — — — — — 518 — (6) (16) $ 8,681 $ 3,295 $ 4,323 $ 3,486 — (199) (76) $ 8,406 — (103) — $ 3,192 — — (84) $ 4,239 — (518) — $ 2,968 (a) Substantially all electric utility property is mortgaged under mortgage bond indentures. (b) Duke Energy includes $256 million of finance lease purchase accounting adjustments related to Duke Energy Florida related to PPAs that are not accounted for as finance leases in their respective financial statements because of grandfathering provisions in GAAP. (c) Substantially all tax-exempt bonds are secured by first mortgage bonds, letters of credit or the Master Credit Facility. (d) Includes $625 million that was classified as Long-Term Debt on the Consolidated Balance Sheets due to the existence of long-term credit facilities that backstop these commercial paper balances, along with Duke Energy’s ability and intent to refinance these balances on a long-term basis. The weighted average days to maturity for Duke Energy’s commercial paper programs was 15 days. (e) Duke Energy includes $1,121 million and $100 million in purchase accounting adjustments related to Progress Energy and Piedmont, respectively. (f) Duke Energy includes $29 million in purchase accounting adjustments primarily related to the merger with Progress Energy. (g) Refer to Note 18 for additional information on amounts from consolidated VIEs. Current Maturities of Long-Term Debt The following table shows the significant components of Current maturities of Long-Term Debt on the Consolidated Balance Sheets. The Duke Energy Registrants currently anticipate satisfying these obligations with cash on hand and proceeds from additional borrowings. Maturity Date Interest Rate December 31, 2022 April 2023 June 2023 October 2023 October 2023 October 2023 March 2023 March 2023 September 2023 September 2023 2.875% 3.469% 3.950% 4.272% 4.118% 2.500% 3.050% 3.375% 3.800% $ 350 500 400 150 300 500 500 300 300 854 $ 4,154 (in millions) Unsecured Debt Duke Energy (Parent) Duke Energy (Parent)(a) Duke Energy (Parent) Duke Energy Ohio(a) Duke Energy Indiana(a) First Mortgage Bonds Duke Energy Carolinas Duke Energy Carolinas Duke Energy Progress Duke Energy Ohio Other(b) Current maturities of long-term debt (a) Debt has a floating interest rate. (b) Includes finance lease obligations, amortizing debt, tax-exempt bonds with mandatory put options and small bullet maturities. 146 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued) Maturities and Call Options The following table shows the annual maturities of long-term debt for the next five years and thereafter. Amounts presented exclude short-term notes payable, commercial paper and money pool borrowings and debt issuance costs for the Subsidiary Registrants. (in millions) 2023 2024 2025 2026 2027 Thereafter Total long-term debt, including current maturities December 31, 2022 Duke Energy(a) $ 4,154 3,216 4,322 2,682 3,203 52,999 $ 70,576 Duke Energy Carolinas $ 1,018 19 491 621 323 11,884 $14,356 Progress Energy $ 697 939 1,040 345 947 18,642 Duke Energy Progress $ 369 72 975 279 233 9,238 Duke Energy Florida $ 328 867 65 66 714 7,753 Duke Energy Ohio $ 475 — 245 45 102 2,415 Duke Energy Indiana $ 303 4 4 4 177 3,853 Piedmont $ 45 40 205 40 300 2,760 $ 22,610 $11,166 $ 9,793 $ 3,282 $ 4,345 $ 3,390 (a) Excludes $1,169 million in purchase accounting adjustments related to the Progress Energy merger and the Piedmont acquisition. The Duke Energy Registrants have the ability under certain debt facilities to call and repay the obligation prior to its scheduled maturity. Therefore, the actual timing of future cash repayments could be materially different than as presented above. Short-Term Obligations Classified as Long-Term Debt Tax-exempt bonds that may be put to the Duke Energy Registrants at the option of the holder and certain commercial paper issuances and money pool borrowings are classified as Long-Term Debt on the Consolidated Balance Sheets. These tax-exempt bonds, commercial paper issuances and money pool borrowings, which are short-term obligations by nature, are classified as long-term due to Duke Energy’s intent and ability to utilize such borrowings as long-term financing. As Duke Energy’s Master Credit Facility and other bilateral letter of credit agreements have non-cancelable terms in excess of one year as of the balance sheet date, Duke Energy has the ability to refinance these short-term obligations on a long-term basis. The following tables show short-term obligations classified as long-term debt. (in millions) Tax-exempt bonds Commercial paper(a) Total (a) Progress Energy amounts are equal to Duke Energy Progress amounts. December 31, 2022 and 2021 Duke Energy $ 312 625 $ 937 Duke Energy Carolinas $ — 300 $ 300 Duke Energy Progress $ — 150 $ 150 Duke Energy Ohio $ 27 25 $ 52 Duke Energy Indiana $ 285 150 $ 435 147 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued)Summary of Significant Debt Issuances In January 2023, Duke Energy Carolinas issued $1.8 billion of first mortgage bonds. The issuance was split between a $900 million, 10-year tranche at 4.95% and a $900 million, 30-year tranche at 5.35%. The net proceeds will be used to refinance $1 billion of Duke Energy Carolinas bonds maturing in March 2023, to pay down short-term debt and for general company purposes. The following tables summarize significant debt issuances (in millions). Issuance Date Unsecured Debt May 2022(a) June 2022(b) June 2022(b) August 2022(c) August 2022(c) August 2022(c) December 2022(d) December 2022(d) First Mortgage Bonds March 2022(e) March 2022(e) March 2022(e) March 2022(e) November 2022(f) Tax-exempt Bonds June 2022(g) June 2022(g) September 2022(h) September 2022(i) September 2022(i) Total issuances Maturity Date Interest Rate May 2052 June 2028 June 2034 March 2028 August 2032 August 2052 December 2025 December 2027 March 2032 March 2052 April 2032 April 2052 November 2052 September 2030 November 2039 October 2046 October 2046 October 2046 5.050 % 4.750 % 5.306 % 4.300 % 4.500 % 5.000 % 5.000 % 5.000 % 2.850 % 3.550 % 3.400 % 4.000 % 5.950 % 4.000 % 4.250 % 3.300 % 3.700 % 4.000 % Year Ended December 31, 2022 Duke Energy (Parent) Duke Energy Carolinas Duke Energy Progress $ — 645 537 900 1,150 1,150 500 500 — — — — — 168 234 — — — $ — — — — — — — — 500 650 — — — — — — — — $ — — — — — — — — — — 500 400 — — — 200 210 42 Duke Energy Florida $ — — — — — — — — — — — — 500 — — — — — Piedmont $ 400 — — — — — — — — — — — — — — — — — Duke Energy $ 400 645 537 900 1,150 1,150 500 500 500 650 500 400 500 168 234 200 210 42 $ 9,186 $ 5,784 $ 1,150 $1,352 $ 500 $ 400 (a) Debt issued to repay a portion of outstanding intercompany short-term debt and for general corporate purposes. (b) Duke Energy (Parent) issued 600 million euros aggregate principal amount of 3.10% senior notes due June 2028 and 500 million euros aggregate principal amount of 3.85% senior notes due June 2034. Debt issued to repay a $500 million debt maturity, pay down short-term debt and for general corporate purposes. Duke Energy’s obligations under its euro-denominated fixed-rate notes were effectively converted to fixed-rate U.S. dollars at issuance through cross-currency swaps, mitigating foreign currency exchange risk associated with the interest and principal payments. See Note 15 for additional information. (c) Debt issued to repay a portion of short-term debt and for general corporate purposes. (d) Proceeds will be used to repay a portion of commercial paper and for general corporate purposes. (e) Debt issued to finance or refinance, in whole or in part, existing or new eligible projects under the sustainable financing framework. (f) Debt issued to repay a portion of outstanding intercompany short-term debt and for general company purposes. (g) Debt issued to refund the Ohio Air Quality Development Revenue Refunding bonds, previously held in treasury, which were used to finance or refinance portions of certain solid waste disposal facilities. The mandatory purchase date of these bonds is June 1, 2027. (h) Debt issued to provide funds to refund the prior bonds, which were used to finance or refinance portions of certain air and water pollution control equipment and solid waste disposal equipment. The mandatory purchase date of these bonds is October 1, 2026. (i) Debt issued to provide funds to refund the prior bonds, which were used to finance or refinance portions of certain air and water pollution control equipment and solid waste disposal equipment. The mandatory purchase date of these bonds is October 1, 2030. 148 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued)Issuance Date Unsecured Debt March 2021(a) June 2021(b)(c) June 2021(c) June 2021(c) June 2021(c) September 2021(d) Secured Debt November 2021(e) November 2021(e) November 2021(e) November 2021(e) November 2021(e) First Mortgage Bonds April 2021(f) April 2021(f) August 2021(g) August 2021(g) December 2021(h) December 2021(h) Total issuances Maturity Date Interest Rate March 2031 June 2023 June 2031 June 2041 June 2051 January 2082 July 2031 July 2041 July 2028 July 2037 July 2041 April 2031 April 2051 August 2031 August 2051 December 2031 December 2051 2.500 % 0.299 % 2.550 % 3.300 % 3.500 % 3.250 % 1.679 % 2.617 % 1.295 % 2.387 % 2.799 % 2.550 % 3.450 % 2.000 % 2.900 % 2.400 % 3.000 % Duke Energy $ 350 500 1,000 750 750 500 100 137 221 352 197 550 450 650 450 650 500 Duke Energy (Parent) $ — 500 1,000 750 750 500 — — — — — — — — — — — Year Ended December 31, 2021 Duke Energy Carolinas Duke Energy Progress $ — — — — — — 100 137 — — — 550 450 — — — — $ — — — — — — — — 221 352 197 — — 650 450 — — Duke Energy Florida $ — — — — — — Piedmont $ 350 — — — — — — — — — — — — — — 650 500 — — — — — — — — — — — $ 8,107 $ 3,500 $1,237 $1,870 $1,150 $ 350 (a) Debt issued to repay at maturity $160 million senior unsecured notes due June 2021, pay down short-term debt and for general corporate purposes. (b) Debt has a floating interest rate. (c) Debt issued to repay $1.75 billion of Duke Energy (Parent) debt maturities, to repay a portion of short-term debt and for general corporate purposes. (d) Debt issued to repay in October 2021 $500 million of Duke Energy (Parent) unsecured notes. The interest rate resets every five years. (e) Debt issued to finance the North Carolina portion of storm restoration expenditures related to Hurricane Florence, Hurricane Michael, Hurricane Dorian and Winter Storm Diego. (f) Debt issued to repay at maturity $500 million first mortgage bonds due June 2021, pay down short-term debt and for general company purposes. (g) Debt issued to repay at maturity a total of $600 million first mortgage bonds due September 2021, pay down short-term debt and for general company purposes. (h) Proceeds were used to finance or refinance, in whole or in part, existing or new eligible projects under the sustainable financing framework. 149 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued)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. (in millions) Facility size(a) Reduction to backstop issuances Commercial paper(b) Outstanding letters of credit Tax-exempt bonds Available capacity December 31, 2022 Duke Energy $ 9,000 (3,685) (40) (81) $ 5,194 Duke Energy (Parent) $ 2,375 463 (27) — $ 2,811 Duke Energy Carolinas $ 1,925 (1,533) (4) — 388 $ Duke Energy Progress $ 800 (389) (2) — 409 $ Duke Energy Florida $1,150 (605) (7) — $ 538 Duke Energy Ohio $ 900 (522) — — $ 378 Duke Energy Indiana $ 1,050 (585) — (81) 384 $ Piedmont $ 800 (514) — — $ 286 (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 in the Consolidated Balance Sheets. 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 on 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. In December 2022, Duke Energy (Parent) repaid $400 million of the term loan. The balance is classified as Long-Term Debt on Duke Energy’s Consolidated Balance Sheets. The Three-Year Revolving Credit Facility was terminated in March 2022. Duke Energy Florida Term Loan Facility In October 2022, Duke Energy Florida entered into a term loan facility with commitments totaling $800 million expiring in April 2024. The term loan was fully drawn at the time of closing In October and borrowings were used for storm costs, under-collected fuel and general company purposes. The balance is classified as Long-Term Debt on Duke Energy Florida’s Consolidated Balance Sheet. Other Debt Matters In September 2022, Duke Energy filed a Form S-3 with the SEC. Under this Form S-3, which is uncapped, the Duke Energy Registrants, excluding Progress Energy, may issue debt and other securities, including preferred stock, in the future at amounts, prices and with terms to be determined at the time of future offerings. The registration statement was filed to replace a similar prior filing upon expiration of its three-year term and also allows for the issuance of common and preferred stock by Duke Energy. Also in September 2022, to replace another similar prior filing, Duke Energy filed an effective Form S-3 with the SEC to sell up to $4 billion of variable denomination floating-rate demand notes, called PremierNotes. The Form S-3 states that no more than $2 billion of the notes will be outstanding at any particular time. The notes are offered on a continuous basis and bear interest at a floating rate per annum determined by the Duke Energy PremierNotes Committee, or its designee, on a weekly basis. The interest rate payable on notes held by an investor may vary based on the principal amount of the investment. The notes have no stated maturity date, are non-transferable and may be redeemed in whole or in part by Duke Energy or at the investor’s option at any time. The balance as of December 31, 2022, and 2021, was $897 million and $1,066 million, respectively. The notes are short-term debt obligations of Duke Energy and are reflected as Notes payable and commercial paper on Duke Energy’s Consolidated Balance Sheets. Money Pool and Intercompany Credit Agreements The Subsidiary Registrants, excluding Progress Energy, are eligible to receive support for their short-term borrowing needs through participation with Duke Energy and certain of its subsidiaries in a money pool arrangement. Under this arrangement, those companies with short-term funds may provide short-term loans to affiliates participating in this arrangement. The money pool is structured such that the Subsidiary Registrants, excluding Progress Energy, separately manage their cash needs and working capital requirements. Accordingly, there is no net settlement of receivables and payables between money pool participants. Duke Energy (Parent), may loan funds to its participating subsidiaries, but may not borrow funds through the money pool. Accordingly, as the money pool activity is between Duke Energy and its subsidiaries, all money pool balances are eliminated within Duke Energy’s Consolidated Balance Sheets. Money pool receivable balances are reflected within Notes receivable from affiliated companies on the Subsidiary Registrants’ Consolidated Balance 150 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued) Sheets. Money pool payable balances are reflected within either Notes payable to affiliated companies or Long-Term Debt Payable to Affiliated Companies on the Subsidiary Registrants’ Consolidated Balance Sheets. In March 2022, Progress Energy closed a revolving credit agreement with Duke Energy (Parent), which allowed up to $2.5 billion in intercompany borrowings. Restrictive Debt Covenants The Duke Energy Registrants’ debt and credit agreements contain various financial and other covenants. Duke Energy’s Master Credit Facility contains a covenant requiring the debt-to-total capitalization ratio not to exceed 65% for each borrower, excluding Piedmont, and 70% for Piedmont. Failure to meet those covenants beyond applicable grace periods could result in accelerated due dates and/or termination of the agreements. As of December 31, 2022, Duke Energy presented approximately $131 million of long-term debt as current on the Consolidated Balance Sheet as a result of a technical default due to the bankruptcy filing of a Duke Energy customer. The Duke Energy Registrants were in compliance with all other covenants related to their debt agreements as of December 31, 2022. In addition, some credit agreements may allow for acceleration of payments or termination of the agreements due to nonpayment, or acceleration of other significant indebtedness of the borrower or some of its subsidiaries. None of the debt or credit agreements contain material adverse change clauses. Other Loans As of December 31, 2022, and 2021, Duke Energy had loans outstanding of $852 million, including $33 million at Duke Energy Progress and $819 million, including $34 million at Duke Energy Progress, respectively, against the cash surrender value of life insurance policies it owns on the lives of its executives. The amounts outstanding were carried as a reduction of the related cash surrender value that is included in Other within Other Noncurrent Assets on the Consolidated Balance Sheets. 8. GUARANTEES AND INDEMNIFICATIONS Duke Energy has various financial and performance guarantees and indemnifications with non-consolidated entities, which are issued in the normal course of business. As discussed below, these contracts include performance guarantees, standby letters of credit, debt guarantees and indemnifications and include guarantees and indemnifications related to Commercial Renewables Disposal Groups. Duke Energy enters into these arrangements to facilitate commercial transactions with third parties by enhancing the value of the transaction to the third party. At December 31, 2022, Duke Energy does not believe conditions are likely for significant performance under these guarantees. To the extent liabilities are incurred as a result of the activities covered by the guarantees, such liabilities are included on the accompanying Consolidated Balance Sheets. On January 2, 2007, Duke Energy completed the spin-off of its previously wholly owned natural gas businesses to shareholders. Guarantees issued by Duke Energy or its affiliates, or assigned to Duke Energy prior to the spin-off, remained with Duke Energy subsequent to the spin-off. Guarantees issued by Spectra Energy Capital, LLC (Spectra Capital) or its affiliates prior to the spin-off remained with Spectra Capital subsequent to the spin-off, except for guarantees that were later assigned to Duke Energy. Duke Energy has indemnified Spectra Capital against any losses incurred under certain of the guarantee obligations that remain with Spectra Capital. At December 31, 2022, the maximum potential amount of future payments associated with these guarantees were $40 million, the majority of which expire by 2028. In October 2017, ACP executed a $3.4 billion revolving credit facility with a stated maturity date of October 2021. Duke Energy entered into a guarantee agreement to support its share of the ACP revolving credit facility. In July 2020, ACP reduced the size of the credit facility to $1.9 billion. Duke Energy’s maximum exposure to loss under the terms of the guarantee was $860 million as of December 31, 2020. This amount represented 47% of the outstanding borrowings under the credit facility and was recognized within Other Current Liabilities on the Consolidated Balance Sheets at December 31, 2020, of which $95 million was previously recognized due the adoption of new guidance for credit losses effective January 1, 2020. In February 2021, Duke Energy paid approximately $855 million to fund ACP’s outstanding debt, relieving Duke Energy of its guarantee. See Notes 4 and 13 for more information. In addition to the Spectra Capital and ACP revolving credit facility guarantees above, Duke Energy has issued performance guarantees to customers and other third parties that guarantee the payment and performance of other parties, including certain non-wholly owned entities, as well as guarantees of debt of certain non-consolidated entities. If such entities were to default on payments or performance, Duke Energy would be required under the guarantees to make payments on the obligations of these entities. The maximum potential amount of future payments required under these guarantees as of December 31, 2022, was $33 million of which all expire between 2024 and 2030, with the remaining performance guarantees having no contractual expiration. Additionally, certain guarantees have uncapped maximum potential payments; however, Duke Energy does not believe these guarantees will have a material effect on its results of operations, cash flows or financial position. Duke Energy uses bank-issued standby letters of credit to secure the performance of wholly owned and non-wholly owned entities to a third party or customer. Under these arrangements, Duke Energy has payment obligations to the issuing bank that are triggered by a draw by the third party or customer due to the failure of the wholly owned or non-wholly owned entity to perform according to the terms of its underlying contract. At December 31, 2022, Duke Energy had issued a total of $667 million in letters of credit, which expire between 2023 and 2028. The unused amount under these letters of credit was $35 million. Duke Energy recognized $2 million and $3 million as of December 31, 2022, and 2021, respectively, primarily in Other within Other Noncurrent Liabilities on the Consolidated Balance Sheets, for the guarantees discussed above. As current estimates change, additional losses related to guarantees and indemnifications to third parties, which could be material, may be recorded by the Duke Energy Registrants in the future. 151 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued)9. JOINT OWNERSHIP OF GENERATING AND TRANSMISSION FACILITIES The Duke Energy Registrants maintain ownership interests in certain jointly owned generating and transmission facilities. The Duke Energy Registrants are entitled to a share of the generating capacity and output of each unit equal to their respective ownership interests. The Duke Energy Registrants pay their ownership share of additional construction costs, fuel inventory purchases and operating expenses. The Duke Energy Registrants share of revenues and operating costs of the jointly owned facilities is included within the corresponding line in the Consolidated Statements of Operations. Each participant in the jointly owned facilities must provide its own financing. The following table presents the Duke Energy Registrants’ interest of jointly owned plant or facilities and amounts included on the Consolidated Balance Sheets. All facilities are operated by the Duke Energy Registrants and are included in the Electric Utilities and Infrastructure segment. (in millions except for ownership interest) Duke Energy Carolinas Catawba (units 1 and 2)(a) W.S. Lee CC(b) Duke Energy Indiana Gibson (unit 5)(c) Vermillion(d) Transmission and local facilities(c) (a) (b) (c) (d) Jointly owned with North Carolina Municipal Power Agency Number 1, NCEMC and PMPA. Jointly owned with NCEMC. Jointly owned with WVPA and IMPA. Jointly owned with WVPA. 10. ASSET RETIREMENT OBLIGATIONS Duke Energy records an ARO when it has a legal obligation to incur retirement costs associated with the retirement of a long-lived asset and the obligation can be reasonably estimated. Certain assets of the Duke Energy Registrants have an indeterminate life, such as transmission and distribution facilities, and thus the fair value of the retirement obligation is not reasonably estimable. A liability for these AROs will be recorded when a fair value is determinable. December 31, 2022 Ownership Interest Property, Plant and Equipment Accumulated Depreciation Construction Work in Progress 19.25 % 87.27 % 50.05 % 62.50 % Various $ 1,047 613 450 182 6,718 $ 546 86 241 113 1,510 $ 32 48 2 1 157 The Duke Energy Registrants’ regulated operations accrue costs of removal for property that does not have an associated legal retirement obligation based on regulatory orders from state commissions. These costs of removal are recorded as a regulatory liability in accordance with regulatory accounting treatment. The Duke Energy Registrants do not accrue the estimated cost of removal for any nonregulated assets. See Note 4 for the estimated cost of removal for assets without an associated legal retirement obligation, which are included in Regulatory liabilities on the Consolidated Balance Sheets. The following table presents the AROs recorded on the Consolidated Balance Sheets. (in millions) Decommissioning of nuclear power facilities(a) Closure of ash impoundments Other Total asset retirement obligation Less: Current portion Total noncurrent asset retirement obligation Duke Energy $ 7,261 5,176 291 $ 12,728 773 $ 11,955 Duke Energy Carolinas $ 3,009 2,309 64 $ 5,382 261 $ 5,121 Progress Energy $ 4,217 1,862 102 $ 6,181 289 $ 5,892 December 31, 2022 Duke Energy Progress Duke Energy Florida Duke Energy Ohio $ 3,948 1,833 42 $ 5,823 288 $ 5,535 $ 270 29 59 $ 358 1 $ 357 $ — 95 59 $154 17 $137 Duke Energy Indiana $ — 911 40 $ 951 207 $ 744 Piedmont $ — — 26 $ 26 — $ 26 (a) Duke Energy amount includes purchase accounting adjustments related to the merger with Progress Energy. 152 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued)Nuclear Decommissioning Liability AROs related to nuclear decommissioning are based on site-specific cost studies. The NCUC, PSCSC and FPSC require updated cost estimates for decommissioning nuclear plants every five years. The following table summarizes information about the most recent site-specific nuclear decommissioning cost studies. Decommissioning costs are stated in 2018 or 2019 dollars, depending on the year of the cost study, and include costs to decommission plant components not subject to radioactive contamination. (in millions) Duke Energy Duke Energy Carolinas(b)(c) Duke Energy Progress(d) Duke Energy Florida(e) Annual Funding Requirement(a) Decommissioning Costs(a) $ 10 — 10 — $ 9,105 4,365 4,181 559 Year of Cost Study 2018 or 2019 2018 2019 N/A (a) Amount represents annual funding requirement for the current fiscal year. Amounts for Progress Energy equal the sum of Duke Energy Progress and Duke Energy Florida. (b) Decommissioning costs for Duke Energy Carolinas reflects its ownership interest in jointly owned reactors. Other joint owners are responsible for decommissioning costs related to their interest in the reactors. (c) Duke Energy Carolinas’ site-specific nuclear decommissioning cost study completed in 2018 was filed with the NCUC and PSCSC in 2019. A new funding study was also completed and filed with the NCUC and PSCSC in 2019. (d) Duke Energy Progress’ site-specific nuclear decommissioning cost study completed in 2019 was filed with the NCUC and PSCSC in March 2020. Duke Energy Progress also completed a funding study, which was filed with the NCUC and PSCSC in July 2020. In October 2021, Duke Energy Progress filed the 2019 nuclear decommissioning cost study with the FERC, as well as a revised rate schedule for decommissioning expense to be collected from wholesale customers. The FERC accepted the filing, as filed on December 9, 2021. (e) During 2019, Duke Energy Florida reached an agreement to transfer decommissioning work for Crystal River Unit 3 to a third party and decommissioning costs are based on the agreement with this third party rather than a cost study. Regulatory approval was received from the NRC and the FPSC in April 2020 and August 2020, respectively. Nuclear Decommissioning Trust Funds Duke Energy Carolinas, Duke Energy Progress and Duke Energy Florida each maintain NDTFs that are intended to pay for the decommissioning costs of their respective nuclear power plants. The NDTF investments are managed and invested in accordance with applicable requirements of various regulatory bodies including the NRC, FERC, NCUC, PSCSC, FPSC and the IRS. Use of the NDTF investments is restricted to nuclear decommissioning activities including license termination, spent fuel and site restoration. The license termination and spent fuel obligations relate to contaminated decommissioning and are recorded as AROs. The site restoration obligation relates to non-contaminated decommissioning and is recorded to cost of removal within Regulatory liabilities on the Consolidated Balance Sheets. The following table presents the fair value of NDTF assets legally restricted for purposes of settling AROs associated with nuclear decommissioning. Duke Energy Florida entered into an agreement with a third party to decommission Crystal River Unit 3 and was granted an exemption from the NRC, which allows for use of the NDTF for all aspects of nuclear decommissioning. The entire balance of Duke Energy Florida’s NDTF may be applied toward license termination, spent fuel and site restoration costs incurred to decommission Crystal River Unit 3 and is excluded from the table below. See Note 17 for additional information related to the fair value of the Duke Energy Registrants’ NDTFs. (in millions) Duke Energy Duke Energy Carolinas Duke Energy Progress Nuclear Operating Licenses December 31, 2022 $ 7,466 4,208 3,258 2021 $ 8,933 5,068 3,865 As described in Note 4, 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. The following table includes the current expiration of nuclear operating licenses. Unit Duke Energy Carolinas Catawba Units 1 and 2 McGuire Unit 1 McGuire Unit 2 Oconee Units 1 and 2 Oconee Unit 3 Duke Energy Progress Brunswick Unit 1 Brunswick Unit 2 Harris Robinson Year of Expiration 2043 2041 2043 2033 2034 2036 2034 2046 2030 The NRC has acknowledged permanent cessation of operation and permanent removal of fuel from the reactor vessel at Crystal River Unit 3. Therefore, the license no longer authorizes operation of the reactor. During 2019, Duke Energy Florida entered into an agreement for the accelerated decommissioning of Crystal River Unit 3. Regulatory approval was received from the NRC and the FPSC in April 2020 and August 2020, respectively. See Note 4 for more information. Closure of Ash Impoundments The Duke Energy Registrants are subject to state and federal regulations covering the closure of coal ash impoundments, including the EPA CCR rule and the Coal Ash Act, and other agreements. AROs recorded on the Duke Energy Registrants’ Consolidated Balance Sheets include the legal obligation for closure of coal ash basins and the disposal of related ash as a result of these regulations and agreements. The ARO amount recorded on the Consolidated Balance Sheets is based upon estimated closure costs for impacted ash impoundments. The amount recorded represents the discounted cash flows for estimated closure costs based upon specific closure plans. Actual costs to be incurred will be dependent upon factors that vary from site to site. The most significant factors are the method and time frame of closure at the individual sites. Closure methods considered include removing the water from ash basins, consolidating material as necessary and capping the ash with a synthetic barrier, excavating and relocating the ash to a lined structural fill or lined landfill or recycling the ash for concrete or some other beneficial use. The ultimate method and timetable for closure will be in compliance with standards set by federal and state regulations and other agreements. The ARO amount will be adjusted as additional information is gained through the closure and post-closure process, including acceptance and approval of compliance approaches, which may change management assumptions, and may result in a material change to the balance. See ARO Liability Rollforward section below for information on revisions made to the coal ash liability during 2022 and 2021. 153 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued)Asset retirement costs associated with the AROs for operating plants and retired plants are included in Net property, plant and equipment and Regulatory assets, respectively, on the Consolidated Balance Sheets. See Note 4 for additional information on Regulatory assets related to AROs and Note 5 for additional information on commitments and contingencies. Cost recovery for future expenditures will be pursued through the normal ratemaking process with federal and state utility commissions, which permit recovery of necessary and prudently incurred costs associated with Duke Energy’s regulated operations. See Note 4 for additional information on recovery of coal ash costs. ARO Liability Rollforward The following tables present changes in the liability associated with AROs. (in millions) Duke Energy Duke Energy Carolinas Progress Energy Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana Piedmont Balance at December 31, 2020 $ 12,854 $ 5,350 $ 6,149 $ 5,635 $ 514 $ 111 $ 1,176 $ 20 Accretion expense(a) Liabilities settled(b) Liabilities incurred in the current year Revisions in estimates of cash flows(c) Balance at December 31, 2021 Accretion expense(a) Liabilities settled(b) Liabilities incurred in the current year Revisions in estimates of cash flows(c) Balance at December 31, 2022 504 (613) 14 (159) 242 (210) 8 (89) 229 (324) 6 52 212 (214) — 42 12,600 5,301 6,112 5,675 501 (680) 22 285 242 (234) — 73 229 (334) 18 156 215 (228) — 161 17 (110) 6 10 437 14 (106) 18 (5) 4 (3) — 24 136 6 (13) — 25 35 (77) — (147) 987 30 (98) 5 27 $ 12,728 $ 5,382 $ 6,181 $ 5,823 $ 358 $ 154 $ 951 $ 1 — — 1 22 1 — — 3 26 (a) Substantially all accretion expense for the years ended December 31, 2022, and 2021, relates to Duke Energy’s regulated operations and has been deferred in accordance with regulatory accounting treatment. (b) Amounts primarily relate to ash impoundment closures and nuclear decommissioning. (c) The amounts recorded represent the discounted cash flows for estimated closure costs as evaluated on a site-by-site basis. The increases in 2022 primarily relate to higher unit costs associated with basin closure and routine maintenance. The decreases in 2021 primarily relate to revised basin closure cost estimates, partially offset by increases related to new closure plan approvals, post closure maintenance and beneficiation costs. 154 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued)11. PROPERTY, PLANT AND EQUIPMENT The following tables summarize the property, plant and equipment for Duke Energy and its subsidiary registrants. (in millions) Land Plant – Regulated Electric generation, distribution and transmission Natural gas transmission and distribution Other buildings and improvements Plant – Nonregulated Other buildings and improvements Nuclear fuel Equipment Construction in process Other Total property, plant and equipment(a) Total accumulated depreciation – regulated(b)(c) Total accumulated depreciation – nonregulated(d) Facilities to be retired, net December 31, 2022 Average Remaining Useful Life (Years) Duke Energy Duke Energy Carolinas Progress Energy Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana Piedmont $ 2,232 $ 565 $ 993 $ 496 $ 497 $ 230 $ 124 $ 295 39 56 40 10 13 15 126,016 13,174 2,537 369 3,081 2,959 7,381 6,090 163,839 (50,544) (1,556) 9 46,640 — 973 55,872 — 647 — 1,723 710 2,671 1,368 54,650 (18,669) — — — 1,358 936 3,073 1,943 64,822 (20,584) — — 33,336 — 341 — 1,358 567 1,317 1,460 38,875 (14,201) — — 22,536 — 306 — — 369 1,756 476 25,940 (6,377) — — 6,900 3,773 398 — — 441 375 380 12,497 (3,250) — — 16,604 — 336 — — 356 381 320 18,121 (6,021) — — — 9,401 183 — — 125 478 387 10,869 (2,081) — 9 Total net property, plant and equipment $111,748 $ 35,981 $ 44,238 $ 24,674 $19,563 $ 9,247 $12,100 $ 8,797 (a) (b) (c) (d) Includes finance leases of $816 million, $335 million, $674 million, $590 million, $84 million and $10 million at Duke Energy, Duke Energy Carolinas, Progress Energy, Duke Energy Progress, Duke Energy Florida and Duke Energy Indiana, respectively, primarily within Plant – Regulated. The Progress Energy, Duke Energy Progress and Duke Energy Florida amounts are net of $233 million, $81 million and $152 million, respectively, of accumulated amortization of finance leases. Includes $1,683 million, $934 million, $749 million and $749 million of accumulated amortization of nuclear fuel at Duke Energy, Duke Energy Carolinas, Progress Energy and Duke Energy Progress, respectively. Includes accumulated amortization of finance leases of $7 million, $51 million and $4 million at Duke Energy, Duke Energy Carolinas and Duke Energy Indiana, respectively. Includes accumulated amortization of finance leases of ($1 million) at Duke Energy. 155 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued) (in millions) Land Plant – Regulated Electric generation, distribution and transmission Natural gas transmission and distribution Other buildings and improvements Plant – Nonregulated Other buildings and improvements Nuclear fuel Equipment Construction in process Other Total property, plant and equipment(a) Total accumulated depreciation – regulated(b)(c) Total accumulated depreciation – nonregulated(d) Facilities to be retired, net December 31, 2021 Average Remaining Useful Life (Years) Duke Energy Duke Energy Carolinas Progress Energy Duke Energy Progress Duke Energy Florida Duke Energy Ohio $ 2,145 $ 543 $ 957 $ 482 $ 475 $ 219 40 54 37 11 13 14 120,855 12,079 1,921 401 3,181 2,659 5,979 5,276 154,496 (47,611) (1,493) 144 44,910 — 550 53,447 — 514 — 1,856 614 2,078 1,323 51,874 (17,854) — 102 — 1,325 791 2,297 1,563 60,894 (19,214) — 26 32,417 — 228 — 1,325 497 954 1,115 37,018 (13,387) — 26 21,030 — 286 — — 294 1,343 437 23,865 (5,819) — — 6,573 3,347 381 — — 403 515 287 11,725 (3,106) — 6 Duke Energy Indiana $ 122 15,925 — 321 — — 262 460 253 17,343 (5,583) — — Piedmont $ 279 — 8,732 155 — — 122 262 368 9,918 (1,899) — 11 Total net property, plant and equipment $ 105,536 $ 34,122 $ 41,706 $ 23,657 $18,046 $ 8,625 $11,760 $ 8,030 (a) (b) (c) (d) Includes finance leases of $958 million, $335 million, $729 million, $627 million, $102 million, and $10 million at Duke Energy, Duke Energy Carolinas, Progress Energy, Duke Energy Progress, Duke Energy Florida and Duke Energy Indiana, respectively, primarily within Plant – Regulated. The Progress Energy, Duke Energy Progress and Duke Energy Florida amounts are net of $178 million, $45 million and $133 million, respectively, of accumulated amortization of finance leases. Includes $1,799 million, $1,064 million, $735 million and $735 million of accumulated amortization of nuclear fuel at Duke Energy, Duke Energy Carolinas, Progress Energy and Duke Energy Progress, respectively. Includes accumulated amortization of finance leases of $9 million, $33 million, and $3 million at Duke Energy, Duke Energy Carolinas and Duke Energy Indiana, respectively. Includes accumulated amortization of finance leases of ($1 million) at Duke Energy. Duke Energy continues to execute on its business transformation strategy, including the evaluation of in-office work policies considering the experience with the COVID-19 pandemic and also workforce realignment of roles and responsibilities. In May 2021, Duke Energy management approved the sale of certain properties and entered into an agreement to exit certain leased space on December 31, 2021. The sale of the properties is subject to abandonment accounting and resulted in an impairment charge. Additionally, the exit of the leased space resulted in the impairment of related furniture, fixtures and equipment. During the year ended December 31, 2021, Duke Energy recorded a pretax charge to earnings of $192 million on the Consolidated Statements of Operations, which includes $133 million within Impairment of assets and other charges, $42 million within Operations, maintenance and other and $17 million within Depreciation and amortization. The following table presents capitalized interest, which includes the debt component of AFUDC. (in millions) Duke Energy Duke Energy Carolinas Progress Energy Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana(a) Piedmont (a) In 2021, Duke Energy Indiana is primarily compromised of ($24 million) of PISCC amortization, which is partially offset by $7 million of the debt component of AFUDC. Years Ended December 31, 2022 $118 50 26 19 7 14 3 4 2021 $ 66 29 20 14 6 20 (17) 9 2020 $ 96 28 17 12 5 26 10 8 156 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued)12. GOODWILL AND INTANGIBLE ASSETS GOODWILL Duke Energy Duke Energy’s Goodwill balance of $19.3 billion is allocated $17.4 billion to EU&I and $1.9 billion to GU&I on Duke Energy’s Consolidated Balance Sheets at December 31, 2022, and 2021. There are no accumulated impairment charges. Duke Energy Ohio Duke Energy Ohio’s Goodwill balance of $920 million, allocated $596 million to EU&I and $324 million to GU&I, is presented net of accumulated impairment charges of $216 million on the Consolidated Balance Sheets at December 31, 2022, and 2021. Progress Energy Progress Energy’s Goodwill is included in the EU&I segment and there are no accumulated impairment charges. Piedmont Piedmont’s Goodwill is included in the GU&I segment and there are no accumulated impairment charges. Goodwill Impairment Testing Duke Energy, Progress Energy, Duke Energy Ohio and Piedmont are required to perform an annual goodwill impairment test as of the same date each year and, accordingly, perform their annual impairment testing of goodwill as of August 31. Duke Energy, Progress Energy, Duke Energy Ohio and Piedmont update their test between annual tests if events or circumstances occur that would more likely than not reduce the fair value of a reporting unit below its carrying value. As the fair value for Duke Energy, Progress Energy, Duke Energy Ohio and Piedmont exceeded their respective carrying values at the date of the annual impairment analysis, no goodwill impairment charges were recorded in 2022. INTANGIBLE ASSETS The following tables show the carrying amount and accumulated amortization of intangible assets included in Other within Other Noncurrent Assets on the Consolidated Balance Sheets of the Duke Energy Registrants at December 31, 2022, and 2021. (in millions) Emission allowances Renewable energy certificates Other Total gross carrying amounts Accumulated amortization – other Total accumulated amortization Total intangible assets, net (in millions) Emission allowances Renewable energy certificates Natural gas, coal and power contracts Other Total gross carrying amounts Accumulated amortization – natural gas, coal and power contracts Accumulated amortization – other Total accumulated amortization $ 265 $ $132 $ 127 $ 5 $ Duke Energy Carolinas Duke Energy Progress Energy $ 8 210 55 273 (8) (8) $ — 84 — 84 — — 84 Duke Energy Carolinas Duke Energy Progress Energy $ 8 204 24 28 264 (24) (4) (28) $ — 73 — — 73 — — — 73 December 31, 2022 Duke Energy Progress Duke Energy Florida $ 2 124 1 127 — — $ 3 — 3 6 (1) (1) Duke Energy Ohio $ — 2 — 2 — — 2 Duke Energy Indiana $ 2 — — 2 — — Piedmont $ — — 22 22 (2) (2) $ 2 $ 20 December 31, 2022 Duke Energy Progress Duke Energy Florida $ 2 131 — — 133 — — — $ 3 — — — 3 — — — Duke Energy Ohio $ — — — — — — — — Duke Energy Indiana Piedmont $ 2 — 24 — 26 (24) — (24) $ — — — — — — — — $ 5 124 4 133 (1) (1) $ 5 131 — — 136 — — — $136 $ 133 $ 3 $ — $ 2 $ — Total intangible assets, net $ 236 $ 157 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued)Amortization Expense Amortization expense amounts for other intangible assets are immaterial for the years ended December 31, 2022, 2021 and 2020, and are expected to be immaterial for the next five years as of December 31, 2022. 13. INVESTMENTS IN UNCONSOLIDATED AFFILIATES EQUITY METHOD INVESTMENTS Investments in affiliates that are not controlled by Duke Energy, but over which it has significant influence, are accounted for using the equity method. The following table presents Duke Energy’s investments in unconsolidated affiliates accounted for under the equity method, as well as the respective equity in earnings, by segment, for periods presented in this filing. (in millions) Electric Utilities and Infrastructure Gas Utilities and Infrastructure Other Total Years Ended December 31, 2022 Investments Equity in earnings (losses) $ 99 240 116 $ 455 $ $ 7 21 85 113 Investments $ $ 104 231 122 457 2021 2020 Equity in earnings (losses) Equity in earnings (losses) $ $ 7 8 47 62 $ (1) (2,017) 13 $ (2,005) During the years ended December 31, 2022, 2021 and 2020, Duke Energy received distributions from equity investments of $111 million, $56 million and $34 million, respectively, which are included in Other assets within Cash Flows from Operating Activities on the Consolidated Statements of Cash Flows. During the years ended December 31, 2022, 2021 and 2020, Duke Energy received distributions from equity investments of $6 million, $14 million and $23 million, respectively, which are included in Return of investment capital within Cash Flows from Investing Activities on the Consolidated Statements of Cash Flows. During the years ended December 31, 2022, 2021 and 2020, Piedmont received distributions from equity investments of $31 million, $8 million and $2 million, respectively, which are included in Other assets within Cash Flows from Operating Activities. During the years ended December 31, 2021, and 2020, Piedmont received distributions from equity investments of $2 million and $2 million, respectively, which are included within Cash Flows from Investing Activities on the Consolidated Statements of Cash Flows. Amounts received during the year ended December 31, 2022, included in Cash Flows from Investing Activities on the Consolidated Statements of Cash Flows were immaterial. Significant investments in affiliates accounted for under the equity method are discussed below. Duke Energy owns a 7.5% interest in Sabal Trail, a 517-mile interstate natural gas pipeline, which provides natural gas to Duke Energy Florida and Florida Power and Light. Duke Energy owns a 47% interest in the ACP pipeline. In 2020, Duke Energy determined it would no longer continue its investment in the construction of the ACP pipeline. See Notes 4 and 8 for further information. Storage Facilities Piedmont owns a 45% interest in Pine Needle, an interstate LNG storage facility located in North Carolina, and a 50% interest in Hardy Storage, an underground interstate natural gas storage facility located in West Virginia. Renewable Natural Gas Investments Duke Energy owns a 29.68% investment in SustainRNG, a developer of renewable natural gas projects, a 70% interest in Sustain T&W, SustainRNG’s renewable natural gas project located in Georgia, and a 70% interest in Sustain Liberty, SustainRNG’s renewable natural gas project located in North Carolina. Electric Utilities and Infrastructure Other Duke Energy owns 50% interests in both DATC and Pioneer, which build, own and operate electric transmission facilities in North America. Duke Energy has a 17.5% indirect economic ownership interest and a 25% board representation and voting rights interest in NMC, which owns and operates a methanol and MTBE business in Jubail, Saudi Arabia. Gas Utilities and Infrastructure Pipeline Investments Piedmont owns a 21.49% investment in Cardinal, an intrastate pipeline located in North Carolina. 158 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued)Significant Subsidiaries For the year ended December 31, 2020, Duke Energy’s investment in ACP met the requirements of S-X Rule 4-08(g) to provide summarized financial information. The following table provides summary information for ACP as required under S-X Rule 1-02(bb) for the period of significance in Duke Energy’s consolidated statements of operations. For the years ended December 31, 2022, and 2021, there were no investments that met the significance requirements. Net revenues Operating loss Net loss Net loss attributable to Duke Energy 14. RELATED PARTY TRANSACTIONS The Subsidiary Registrants engage in related party transactions in accordance with the applicable state and federal commission regulations. Refer to the 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 in the Consolidated Statements of Operations and Comprehensive Income are presented in the following table. (in millions) Duke Energy Carolinas Corporate governance and shared service expenses(a) Indemnification coverages(b) Joint Dispatch Agreement (JDA) revenue(c) JDA expense(c) Intercompany natural gas purchases(d) Progress Energy Corporate governance and shared service expenses(a) Indemnification coverages(b) JDA revenue(c) JDA expense(c) Intercompany natural gas purchases(d) Duke Energy Progress Corporate governance and shared service expenses(a) Indemnification coverages(b) JDA revenue(c) JDA expense(c) Intercompany natural gas purchases(d) Duke Energy Florida Corporate governance and shared service expenses(a) Indemnification coverages(b) Duke Energy Ohio Corporate governance and shared service expenses(a) Indemnification coverages(b) Duke Energy Indiana Corporate governance and shared service expenses(a) Indemnification coverages(b) Years Ended December 31, 2022 2021 2020 $ 838 $ 894 $ 753 20 25 114 15 28 109 600 12 24 41 207 11 $ 818 $ 856 $ 715 36 114 25 75 43 600 109 76 41 207 41 75 $ 469 $ 504 $ 420 17 114 25 75 20 600 109 76 19 207 41 75 $ 349 $ 352 $ 295 19 23 22 $ 334 $ 329 $ 326 4 5 4 $ 447 $ 409 $ 401 8 8 8 Year Ended December 31, 2020 $ $ — (4,612) (4,512) (2,121) Years Ended December 31, 2022 2021 2020 $ 155 $ 139 $ 140 3 90 23 3 88 23 3 86 22 (in millions) Piedmont Corporate governance and shared service expenses(a) Indemnification coverages(b) Intercompany natural gas sales(d) Natural gas storage and transportation costs(e) (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 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 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 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 Consolidated Statements of Operations and Comprehensive Income. These intercompany revenues and expenses are eliminated in consolidation. (e) Piedmont has related party transactions as a customer of its equity method investments in Pine Needle, Hardy Storage, and Cardinal natural gas storage and transportation facilities. These expenses are included in Cost of natural gas on Piedmont’s 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 and their proportionate share of certain charged expenses. See Note 7 for more information regarding money pool. These transactions of the Subsidiary Registrants are incurred in the ordinary course of business and are eliminated in consolidation. As discussed in Note 18, 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. 159 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued)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. (in millions) December 31, 2022 Intercompany income tax receivable Intercompany income tax payable December 31, 2021 Intercompany income tax receivable Intercompany income tax payable 15. DERIVATIVES AND HEDGING The Duke Energy Registrants use commodity, interest rate and foreign currency contracts to manage commodity price risk, interest rate risk and foreign currency exchange 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. Foreign currency derivatives are used to manage risk related to foreign currency exchange rates on certain issuances of debt. Derivatives related to interest rate risk for the Commercial Renewables Disposal Groups are included in the following disclosures. See Note 2 for further information. All derivative instruments not identified as NPNS are recorded at fair value as assets or liabilities on the Consolidated Balance Sheets. Cash collateral related to derivative instruments executed under master netting arrangements is offset against the collateralized derivatives on the Consolidated Balance Sheets. The cash impacts of settled derivatives are recorded as operating activities on the 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. Duke Energy Carolinas Progress Energy Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana Piedmont $ — 37 $ — 62 $ 95 — $ — — $ 36 — $ 17 — $ — 17 $ — 84 $ 40 — $ 19 — $ — 18 $ — 10 $ — 38 $ — 27 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. See Note 2 for information on the de-designation of interest rate swaps and related gain reclassified out of AOCI for the year ended December 31, 2022, related to the Commercial Renewables Disposal Groups. Gains and losses reclassified out of AOCI for the years ended December 31, 2021, and 2020, were not material. Duke Energy’s interest rate derivatives designated as hedges include 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 Consolidated Statements of Operations and Comprehensive Income. 160 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued)The following tables show notional amounts of outstanding derivatives related to interest rate risk. December 31, 2022 Duke Energy 500 2,979 3,479 $ $ Duke Energy Carolinas $ $ — 1,250 1,250 Progress Energy Duke Energy Progress Duke Energy Florida Duke Energy Indiana Duke Energy Ohio $ $ — 800 800 $ $ — 500 500 $ $ — 300 300 $ $ — 300 300 $ — 27 $ 27 Duke Energy 2,415 1,177 3,592 $ $ Duke Energy Carolinas $ $ — 350 350 December 31, 2021 Progress Energy $ $ — 500 500 Duke Energy Progress $ $ — 500 500 Duke Energy Indiana Duke Energy Ohio $ $ — 300 300 $ — 27 $ 27 (in millions) Cash flow hedges Undesignated contracts Total notional amount (in millions) Cash flow hedges Undesignated contracts Total notional amount 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. 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 cost 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. Electricity (GWh) Natural gas (millions of Dth) Electricity (GWh) Natural gas (millions of Dth) December 31, 2022 Duke Energy Carolinas Progress Energy Duke Energy Progress Duke Energy Ohio Duke Energy Indiana — 307 — 292 — 292 1,820 — 12,266 11 December 31, 2021 Duke Energy Carolinas Progress Energy Duke Energy Progress Duke Energy Ohio Duke Energy Indiana — 264 — 215 — 215 1,681 — 10,688 8 Duke Energy 14,086 909 Duke Energy 12,369 823 Piedmont — 299 Piedmont — 336 161 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued) FOREIGN CURRENCY RISK Duke Energy may enter into foreign currency derivatives to hedge exposure to changes in foreign currency exchange rates, such as that arising from the issuance of debt denominated in a currency other than U.S. dollars. Fair Value Hedges Derivatives related to existing fixed rate securities are accounted for as fair value hedges, where the derivatives’ fair value gains or losses and hedged items’ fair value gains or losses are both recorded directly to earnings on the same income statement line item, including foreign currency gains or losses arising from changes in the U.S. currency exchange rates. Duke Energy has elected to exclude the cross-currency basis spread from the assessment of effectiveness in the fair value hedges of its foreign currency risk and record any difference between the change in the fair value of the excluded components and the amounts recognized in earnings as a component of other comprehensive income or loss. The following table shows Duke Energy’s outstanding derivatives related to foreign currency risk. There were no fair value hedges in 2021. December 31, 2022 Fair value hedges Total notional amount Pay Notional (in millions) $ $ 645 537 1,182 Pay Rate 4.75 % 5.31 % Receive Notional (in millions) 600 euros 500 euros 1,100 euros Receive Rate 3.10 % 3.85 % Hedge Maturity Date June 2028 June 2034 Fair Value Gain (Loss)(a) (in millions) $ $ (3) (2) (5) (a) Amounts are recorded in Other Income and expenses, net on the Consolidated Statement of Operations, which offsets an equal translation adjustment of the foreign denominated debt. See the Consolidated Statements of Comprehensive Income for amounts excluded from the assessment of effectiveness for which the difference between changes in fair value and periodic amortization is recorded. LOCATION AND FAIR VALUE OF DERIVATIVE ASSETS AND LIABILITIES RECOGNIZED IN THE 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 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 (in millions) Commodity Contracts Not Designated as Hedging Instruments Current Noncurrent Total Derivative Assets – Commodity Contracts Interest Rate Contracts Designated as Hedging Instruments Current Not Designated as Hedging Instruments Current Noncurrent Total Derivative Assets – Interest Rate Contracts Total Derivative Assets Duke Energy Duke Energy Carolinas Progress Energy Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana Piedmont December 31, 2022 $ 265 213 $ 478 $ 132 104 $ 236 $ 99 108 $207 $ 99 108 $207 $ — — $ — $ $ 5 — 5 $ $ 29 — 29 $ — — $ — $ 101 $ — $ — $ — $ — $ — $ — $ — $ 228 29 $ 358 $ 836 $ 94 — $ 94 $ 330 $ 41 — $ 41 $248 $ 23 — $ 23 $230 $ 17 — $ 17 $ 17 $ — — $ — 5 $ $ 81 — $ 81 $ 110 $ — — $ — $ — 162 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued) Derivative Liabilities (in millions) Commodity Contracts Not Designated as Hedging Instruments Current Noncurrent Total Derivative Liabilities – Commodity Contracts Interest Rate Contracts Not Designated as Hedging Instruments Noncurrent Total Derivative Liabilities – Interest Rate Contracts Foreign Currency Contracts Designated as Hedging Instruments Current Noncurrent Total Derivative Liabilities – Foreign Currency Contracts Total Derivative Liabilities Derivative Assets (in millions) Commodity Contracts Not Designated as Hedging Instruments Current Noncurrent Total Derivative Assets – Commodity Contracts Interest Rate Contracts Designated as Hedging Instruments Current Noncurrent Not Designated as Hedging Instruments Current Total Derivative Assets – Interest Rate Contracts Total Derivative Assets Duke Energy Duke Energy Carolinas Progress Energy December 31, 2022 Duke Energy Florida Duke Energy Progress Duke Energy Ohio Duke Energy Indiana Piedmont $ 175 202 $ 377 2 2 $ $ 18 40 $ 58 $ 437 $ 96 31 $ 127 — $ — $ — — $ — $ 127 $ 36 30 $ 66 — $ — $ — — $ — $ 66 $ 18 30 $ 48 — $ — $ — — $ — $ 48 $ 19 — $ 19 — $ — $ — — $ — $ 19 $ — — $ — 2 2 $ $ — — $ — 2 $ $ $ 16 — 16 — $ — $ — — $ — 16 $ $ 27 141 $ 168 — $ — $ — — $ — $ 168 Duke Energy Duke Energy Carolinas Progress Energy December 31, 2021 Duke Energy Florida Duke Energy Progress Duke Energy Ohio Duke Energy Indiana Piedmont $ 199 113 $ 312 $ 3 3 2 $ $ 8 $ 320 $ 99 63 $ 162 $ — — $ — $ — $ 162 $ 72 50 $122 $ — — 2 $ $ 2 $124 $ 72 50 $122 $ — — 2 $ $ 2 $124 $ — — $ — $ — — $ — $ — $ — $ $ 2 — 2 $ — — $ — $ — 2 $ $ $ 23 — 23 $ — — $ — $ — 23 $ $ $ 3 — 3 $ — — $ — $ — 3 $ Derivative Liabilities December 31, 2021 (in millions) Not Designated as Hedging Instruments Current Noncurrent Total Derivative Liabilities – Commodity Contracts Interest Rate Contracts Designated as Hedging Instruments Current Noncurrent Not Designated as Hedging Instruments Current Noncurrent Total Derivative Liabilities – Interest Rate Contracts Total Derivative Liabilities Duke Energy Duke Energy Carolinas Progress Energy Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana Piedmont $ 72 132 $ 204 $ 75 21 10 18 $ 124 $ 328 $ $ 18 9 27 $ — — 8 — 8 35 $ $ $ $ 19 5 24 $ — — — — $ — 24 $ $ $ 5 5 10 $ — — — — $ — 10 $ $ $ 14 — 14 $ — — — — $ — 14 $ $ — — $ — $ — — 1 4 5 5 $ $ $ $ 13 — 13 $ — — — 14 14 27 $ $ $ 21 118 $ 139 $ — — — — $ — $ 139 163 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued)OFFSETTING ASSETS AND LIABILITIES The following tables present the line items on the 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 (in millions) Current Gross amounts recognized Gross amounts offset Net amounts presented in Current Assets: Other Noncurrent Gross amounts recognized Gross amounts offset Net amounts presented in Other Noncurrent Assets: Other Duke Energy Duke Energy Carolinas Progress Energy Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana Piedmont December 31, 2022 $ 594 (64) $ 530 $ 242 (97) $ 145 $ 226 (33) $ 193 $ 104 (40) $ 64 $ 140 (30) $ 110 $ 108 (57) $ 51 $ 122 (30) $ 92 $ 108 (57) $ 51 $ 17 — $ 17 $ — — $ — $ $ 5 — 5 $ — — $ — $ 110 — $ 110 $ — — $ — $ — — $ — $ — — $ — Derivative Liabilities (in millions) Duke Energy Duke Energy Carolinas Progress Energy Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana Piedmont December 31, 2022 Derivative Assets (in millions) Duke Energy Duke Energy Carolinas Progress Energy Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana Piedmont Current Gross amounts recognized Gross amounts offset Net amounts presented in Current Liabilities: Other Noncurrent Gross amounts recognized Gross amounts offset $ 193 (49) $ 144 $ 244 (59) Net amounts presented in Other Noncurrent Liabilities: Other $ 185 $ 96 (15) $ 81 $ 31 (29) $ 2 $ 36 (18) $ 18 $ 30 (30) $ — Current Gross amounts recognized Gross amounts offset Net amounts presented in Current Assets: Other Noncurrent Gross amounts recognized Gross amounts offset Net amounts presented in Other Noncurrent Assets: Other $ 204 (25) $ 179 $ 116 (23) $ 93 $ $ $ $ 99 (16) 83 63 (15) 48 $ $ $ $ 74 (9) 65 50 (8) 42 $ 18 (18) $ — $ 30 (30) $ — $ 19 — $ 19 $ — — $ — December 31, 2021 $ — — $ — $ $ 2 — 2 $ 16 (16) $ — $ — — $ — $ 27 — $ 27 $ 141 — $ 141 $ $ $ $ 74 (9) 65 50 (8) 42 $ — — $ — $ — — $ — December 31, 2021 $ $ 2 — 2 $ — — $ — $ $ 23 — 23 $ — — $ — $ $ 3 — 3 $ — — $ — Derivative Liabilities (in millions) Duke Energy Duke Energy Carolinas Progress Energy Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana Piedmont Current Gross amounts recognized Gross amounts offset Net amounts presented in Current Liabilities: Other Noncurrent Gross amounts recognized Gross amounts offset $ 157 (11) $ 146 $ 171 (12) Net amounts presented in Other Noncurrent Liabilities: Other $ 159 $ $ $ $ 26 (6) 20 9 (8) 1 $ $ $ 19 (5) 14 5 (5) $ — 164 $ 5 (5) $ — $ 5 (5) $ — $ $ 14 — 14 $ — — $ — $ $ $ $ 1 — 1 4 — 4 $ $ $ $ 13 — 13 14 — 14 $ $ 21 — 21 $ 118 — $ 118 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued)OBJECTIVE CREDIT CONTINGENT FEATURES Certain derivative contracts contain objective credit contingent features. These features include the requirement to post cash collateral or letters of credit if specific events occur, such as a credit rating downgrade below investment grade. The following tables show information with respect to derivative contracts that are in a net liability position and contain objective credit risk-related payment provisions. (in millions) Aggregate fair value of derivatives in a net liability position Fair value of collateral already posted Additional cash collateral or letters of credit in the event credit risk-related contingent features were triggered (in millions) Aggregate fair value of derivatives in a net liability position Fair value of collateral already posted Additional cash collateral or letters of credit in the event credit risk-related contingent features were triggered $ $ Duke Energy 141 — 141 Duke Energy 32 — 32 December 31, 2022 Duke Energy Carolinas Progress Energy Duke Energy Progress Duke Energy Florida $ 86 — 86 $ 55 — 55 $ 48 — 48 $ 7 — 7 December 31, 2021 Duke Energy Carolinas Progress Energy Duke Energy Progress Duke Energy Florida $ 18 — 18 $ 14 — 14 $ 10 — 10 $ 4 — 4 The Duke Energy Registrants have elected to offset cash collateral and fair values of derivatives. For amounts to be netted, the derivative and cash collateral must be executed with the same counterparty under the same master netting arrangement. 16. 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 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 Other AFS Securities 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. 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 December 31, 2022, and 2021. Other Investments amounts are recorded in Other within Other Noncurrent Assets on the 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. 165 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued) (in millions) NDTF Cash and cash equivalents Equity securities Corporate debt securities Municipal bonds U.S. government bonds Other debt securities Total NDTF Investments Other Investments Cash and cash equivalents Equity securities Corporate debt securities Municipal bonds U.S. government bonds Other debt securities Total Other Investments Total Investments December 31, 2022 December 31, 2021 Gross Unrealized Holding Gains Gross Unrealized Holding Losses Estimated Fair Value Gross Unrealized Holding Gains Gross Unrealized Holding Losses Estimated Fair Value $ — 3,658 1 — 2 — $ 3,661 $ — 21 — — — — $ $ 21 3,682 $ — 105 85 39 112 18 $ 359 $ — 16 12 3 2 3 $ 36 $ 395 $ 215 5,871 641 330 1,423 156 $ 8,636 $ $ 22 128 84 78 62 41 415 $ 9,051 $ — 4,905 39 14 31 3 $ 4,992 $ — 36 2 3 — — $ 41 $ 5,033 $ — 43 6 1 12 1 $ 63 $ — — 1 1 — 1 $ 3 $ 66 $ 160 7,350 829 314 1,568 180 $ 10,401 $ $ 36 156 119 80 56 45 492 $ 10,893 Realized gains and losses, which were determined on a specific identification basis, from sales of FV-NI and AFS securities for the years ended December 31, 2022, 2021 and 2020, were as follows. (in millions) FV-NI: Realized gains Realized losses AFS: Realized gains Realized losses DUKE ENERGY CAROLINAS Years Ended December 31, 2022 2021 2020 $ 201 316 28 151 $ 724 141 56 54 $ 366 174 96 51 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. (in millions) NDTF Cash and cash equivalents Equity securities Corporate debt securities Municipal bonds U.S. government bonds Other debt securities Total NDTF Investments December 31, 2022 December 31, 2021 Gross Unrealized Holding Gains Gross Unrealized Holding Losses Estimated Fair Value Gross Unrealized Holding Gains Gross Unrealized Holding Losses Estimated Fair Value $ $ — 2,147 1 — 1 — 2,149 $ $ — 51 62 10 51 18 $ 192 $ 117 3,367 401 64 685 148 4,782 $ $ — 2,887 24 2 16 3 2,932 $ $ — $ 19 4 — 3 1 27 $ 53 4,265 506 48 712 175 5,759 166 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued)Realized gains and losses, which were determined on a specific identification basis, from sales of FV-NI and AFS securities for the years ended December 31, 2022, 2021 and 2020, were as follows. (in millions) FV-NI: Realized gains Realized losses AFS: Realized gains Realized losses PROGRESS ENERGY Years Ended December 31, 2022 2021 2020 $ 124 177 22 86 $ 440 96 38 37 $ 64 99 60 37 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. (in millions) NDTF Cash and cash equivalents Equity securities Corporate debt securities Municipal bonds U.S. government bonds Other debt securities Total NDTF Investments Other Investments Cash and cash equivalents Municipal bonds Total Other Investments Total Investments December 31, 2022 December 31, 2021 Gross Unrealized Holding Gains Gross Unrealized Holding Losses Estimated Fair Value Gross Unrealized Holding Gains Gross Unrealized Holding Losses Estimated Fair Value $ $ $ $ $ — 1,511 — — 1 — 1,512 — — — 1,512 $ — 54 23 29 61 — $ 167 $ — — $ — $ 167 $ $ $ $ $ 98 2,504 240 266 738 8 3,854 11 25 36 3,890 $ $ $ $ $ — 2,018 15 12 15 — 2,060 — 2 2 2,062 $ — 24 2 1 9 — $ 36 $ — — $ — $ 36 $ $ $ $ $ 107 3,085 323 266 856 5 4,642 20 26 46 4,688 Realized gains and losses, which were determined on a specific identification basis, from sales of FV-NI and AFS securities for the years ended December 31, 2022, 2021 and 2020, were as follows. (in millions) FV-NI: Realized gains Realized losses AFS: Realized gains Realized losses Years Ended December 31, 2022 2021 2020 $ 77 139 6 48 $ 284 45 16 14 $ 302 75 24 13 167 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued)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. (in millions) NDTF Cash and cash equivalents Equity securities Corporate debt securities Municipal bonds U.S. government bonds Other debt securities Total NDTF Investments Other Investments Cash and cash equivalents Total Other Investments Total Investments December 31, 2022 December 31, 2021 Gross Unrealized Holding Gains Gross Unrealized Holding Losses Estimated Fair Value Gross Unrealized Holding Gains Gross Unrealized Holding Losses Estimated Fair Value $ $ $ $ $ — 1,431 — — 1 — 1,432 — — 1,432 $ $ $ $ $ — 54 22 29 37 — 142 — — 142 $ $ $ $ $ 56 2,411 230 266 460 7 3,430 9 9 3,439 $ $ $ $ $ — 1,915 15 12 15 — 1,957 — — 1,957 $ $ $ $ $ — $ 23 2 1 3 — 29 $ — $ — $ 29 $ 94 2,970 282 266 472 5 4,089 16 16 4,105 Realized gains and losses, which were determined on a specific identification basis, from sales of FV-NI and AFS securities for the years ended December 31, 2022, 2021 and 2020, were as follows. (in millions) FV-NI: Realized gains Realized losses AFS: Realized gains Realized losses DUKE ENERGY FLORIDA Years Ended December 31, 2022 2021 2020 $ 76 136 6 44 $ 283 44 15 13 $ 52 59 24 13 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. (in millions) NDTF Cash and cash equivalents Equity securities Corporate debt securities U.S. government bonds Other debt securities Total NDTF Investments(a) Other Investments Cash and cash equivalents Municipal bonds Total Other Investments Total Investments December 31, 2022 December 31, 2021 Gross Unrealized Holding Gains Gross Unrealized Holding Losses Estimated Fair Value Gross Unrealized Holding Gains Gross Unrealized Holding Losses Estimated Fair Value $ $ $ $ $ — 80 — — — 80 — — — 80 $ — — 1 24 — $ 25 $ — — $ — $ 25 $ $ $ $ $ 42 93 10 278 1 424 1 25 26 450 $ $ $ $ $ — 103 — — — 103 — 2 2 105 $ — 1 — 6 — $ 7 $ — — $ — $ 7 $ $ $ $ $ 13 115 41 384 — 553 3 26 29 582 (a) During the years ended December 31, 2022, and 2021, Duke Energy Florida continued to receive reimbursements from the NDTF for costs related to ongoing decommissioning activity of the Crystal River Unit 3. 168 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued)Realized gains and losses, which were determined on a specific identification basis, from sales of FV-NI and AFS securities for the years ended December 31, 2022, 2021 and 2020, were as follows. (in millions) FV-NI: Realized gains Realized losses AFS: Realized gains Realized losses DUKE ENERGY INDIANA Years Ended December 31, 2022 2021 2020 $ 1 3 — 4 $ 1 1 1 1 $ 250 16 — — 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. (in millions) Investments Cash and cash equivalents Equity securities Corporate debt securities Municipal bonds U.S. government bonds Total Investments December 31, 2022 December 31, 2021 Gross Unrealized Holding Gains Gross Unrealized Holding Losses Estimated Fair Value Gross Unrealized Holding Gains Gross Unrealized Holding Losses Estimated Fair Value $ $ — 2 — — — 2 $ — 16 1 3 — $ 20 $ $ 1 79 8 45 7 140 $ $ — 6 — 1 — 7 $ — — — 1 — $ 1 $ $ — 97 6 46 12 161 Realized gains and losses, which were determined on a specific identification basis, from sales of FV-NI and AFS securities for the years ended December 31, 2022, 2021 and 2020, were immaterial. DEBT SECURITY MATURITIES The table below summarizes the maturity date for debt securities. (in millions) Due in one year or less Due after one through five years Due after five through 10 years Due after 10 years Total 17. FAIR VALUE MEASUREMENTS December 31, 2022 Duke Energy 137 807 469 1,402 2,815 $ $ Duke Energy Carolinas Progress Energy Duke Energy Progress Duke Energy Florida Duke Energy Indiana $ 7 287 230 774 $ 89 443 193 552 $ 1,298 $ 1,277 $ $ 24 244 178 517 963 $ $ 65 199 15 35 314 $ $ 8 22 6 24 60 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 the 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 169 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued) within the fair value hierarchy. These investments are measured at fair value using the net asset value per share practical expedient. The net asset value 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 NYSE 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. DUKE ENERGY 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. Derivatives related to interest rate risk for the Commercial Renewables Disposal Groups are included in the following disclosures. See Note 2 for further information. Other fair value considerations See Note 2 for further information on the valuation of the Commercial Renewables Disposal Groups. See Note 12 for a discussion of the valuation of goodwill and intangible assets. The following tables provide recorded balances for assets and liabilities measured at fair value on a recurring basis on the Consolidated Balance Sheets. Derivative amounts in the tables below for all Duke Energy Registrants exclude cash collateral, which is disclosed in Note 15. See Note 16 for additional information related to investments by major security type for the Duke Energy Registrants. (in millions) NDTF cash and cash equivalents NDTF equity securities NDTF debt securities Other equity securities Other debt securities Other cash and cash equivalents Derivative assets Total assets Derivative liabilities Net assets (liabilities) December 31, 2022 Total Fair Value Level 1 Level 2 Level 3 Not Categorized $ — 42 — — — — — 42 — $ 42 $ 215 5,871 2,550 128 265 22 836 9,887 (437) $ 215 5,829 780 128 55 22 1 7,030 (16) $ — — 1,770 — 210 — 801 2,781 (421) $ — — — — — — 34 34 — 34 $ 9,450 $ 7,014 $ 2,360 $ 170 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued)(in millions) NDTF cash and cash equivalents NDTF equity securities NDTF debt securities Other equity securities Other debt securities Other cash and cash equivalents Derivative assets Total assets Derivative liabilities Net assets (liabilities) December 31, 2021 Total Fair Value Level 1 Level 2 Level 3 Not Categorized $ 160 7,350 2,891 156 300 36 320 11,213 (327) $ 160 7,300 967 156 45 36 3 8,667 (13) $ — — 1,924 — 255 — 293 2,472 (314) $10,886 $ 8,654 $ 2,158 $ $ — — — — — — 24 24 — 24 $ — 50 — — — — — 50 — $ 50 The following table provides reconciliations of beginning and ending balances of assets and liabilities measured at fair value using Level 3 measurements. (in millions) Balance at beginning of period Purchases, sales, issuances and settlements: Purchases Settlements Total gains (losses) included on the Consolidated Balance Sheet Balance at end of period DUKE ENERGY CAROLINAS Derivatives (net) Years Ended December 31, 2022 $ 24 78 (36) (32) $ 34 $ 2021 $ 8 21 (20) 15 24 The following tables provide recorded balances for assets and liabilities measured at fair value on a recurring basis on the Consolidated Balance Sheets. (in millions) NDTF cash and cash equivalents NDTF equity securities NDTF debt securities Derivative assets Total assets Derivative liabilities Net assets (in millions) NDTF cash and cash equivalents NDTF equity securities NDTF debt securities Derivative assets Total assets Derivative liabilities Net assets December 31, 2022 Total Fair Value Level 1 Level 2 Not Categorized $ 117 $ 117 $ — $ — 3,367 1,298 330 5,112 (127) 3,325 323 — 3,765 — — 975 330 1,305 (127) $ 4,985 $ 3,765 $1,178 $ 42 — — 42 — 42 December 31, 2021 Total Fair Value Level 1 Level 2 Not Categorized $ 53 4,265 1,441 162 5,921 (35) $ 53 4,215 339 — 4,607 — $ — — 1,102 162 1,264 (35) $ — 50 — — 50 — 50 $ 5,886 $ 4,607 $ 1,229 $ 171 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued)PROGRESS ENERGY The following table provides recorded balances for assets and liabilities measured at fair value on a recurring basis on the Consolidated Balance Sheets. (in millions) NDTF cash and cash equivalents NDTF equity securities NDTF debt securities Other debt securities Other cash and cash equivalents Derivative assets Total assets Derivative liabilities Net assets DUKE ENERGY PROGRESS December 31, 2022 December 31, 2021 Total Fair Value Level 1 Level 2 Total Fair Value Level 1 Level 2 $ 98 2,504 1,252 25 11 248 4,138 (66) $ 98 2,504 457 — 11 — 3,070 — $ — — 795 25 — 248 1,068 $ 107 3,085 1,450 26 20 124 4,812 (66) (24) $ 107 3,085 628 — 20 — 3,840 — $ — — 822 26 — 124 972 (24) $ 4,072 $ 3,070 $ 1,002 $ 4,788 $ 3,840 $ 948 The following table provides recorded balances for assets and liabilities measured at fair value on a recurring basis on the Consolidated Balance Sheets. (in millions) NDTF cash and cash equivalents NDTF equity securities NDTF debt securities Other cash and cash equivalents Derivative assets Total assets Derivative liabilities Net assets DUKE ENERGY FLORIDA December 31, 2022 December 31, 2021 Total Fair Value Level 1 Level 2 Total Fair Value Level 1 Level 2 $ 56 2,411 963 9 230 3,669 (48) $ 56 2,411 225 9 — 2,701 — $ — — 738 — 230 968 (48) $ 94 2,970 1,025 16 124 4,229 (10) $ 94 2,970 289 16 — 3,369 — $ — — 736 — 124 860 (10) $ 3,621 $ 2,701 $ 920 $ 4,219 $ 3,369 $ 850 The following table provides recorded balances for assets and liabilities measured at fair value on a recurring basis on the Consolidated Balance Sheets. (in millions) NDTF cash and cash equivalents NDTF equity securities NDTF debt securities Other debt securities Other cash and cash equivalents Derivative assets Total assets Derivative liabilities Net assets December 31, 2022 December 31, 2021 Total Fair Value Level 1 Level 2 Total Fair Value Level 1 Level 2 $ — $ — 57 25 — 17 99 (19) $ 80 13 115 425 26 3 — 582 (14) $ 13 115 339 — 3 — 470 — $ — — 86 26 — — 112 (14) $ 568 $ 470 $ 98 $ $ 42 93 289 25 1 17 467 (19) $ 448 $ 42 93 232 — 1 — 368 — 368 172 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued)DUKE ENERGY OHIO The recorded balances for assets and liabilities measured at fair value on a recurring basis on the Consolidated Balance Sheets were not material at December 31, 2022, and 2021. DUKE ENERGY INDIANA The following table provides recorded balances for assets and liabilities measured at fair value on a recurring basis on the Consolidated Balance Sheets. (in millions) Other equity securities Other debt securities Other cash equivalents Derivative assets Total assets Derivative liabilities Net assets December 31, 2022 December 31, 2021 Total Fair Value Level 1 Level 2 Level 3 Total Fair Value Level 1 Level 2 Level 3 $ 79 $ 79 $ — $ — $ 97 $ 97 $ — $ — 60 1 110 250 (16) — 1 — 80 (16) 60 — 81 141 — — — 29 29 — 64 — 23 184 (27) — — 1 98 (13) 64 — — — 22 — 64 22 (14) — $ 234 $ 64 $ 141 $ 29 $ 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. (in millions) Balance at beginning of period Purchases, sales, issuances and settlements: Purchases Settlements Total (losses) gains included on the Consolidated Balance Sheet Balance at end of period PIEDMONT Derivatives (net) Years Ended December 31, 2022 $ 22 74 (32) (35) 2021 $ 6 18 (16) 14 $ 29 $ 22 The following table provides recorded balances for assets and liabilities measured at fair value on a recurring basis on the Consolidated Balance Sheets. (in millions) Derivative assets Derivative liabilities Net (liabilities) assets December 31, 2022 December 31, 2021 Total Fair Value Level 1 Level 2 Total Fair Value Level 1 Level 2 $ — $ — $ — — (168) (168) $ (168) $ — $ (168) $ 3 (139) $ (136) $ $ 3 — $ — (139) 3 $ (139) 173 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued)QUANTITATIVE INFORMATION ABOUT UNOBSERVABLE INPUTS The following tables include quantitative information about the Duke Energy Registrants’ derivatives classified as Level 3. Fair Value (in millions) Valuation Technique Unobservable Input Range Weighted Average Range December 31, 2022 $ 5 RTO auction pricing FTR price – per MWh $ 0.89 — $ 6.25 $ 3.35 29 RTO auction pricing FTR price – per MWh 0.09 — 21.79 2.74 Investment Type Duke Energy Ohio FTRs Duke Energy Indiana FTRs Duke Energy Total Level 3 derivatives $ 34 December 31, 2021 Fair Value (in millions) Valuation Technique Unobservable Input Range Weighted Average Range $ 2 RTO auction pricing FTR price – per MWh $ 0.06 — $ 1.79 $ 0.96 22 RTO auction pricing FTR price – per MWh (1.18) — 13.11 2.68 Investment Type Duke Energy Ohio FTRs Duke Energy Indiana FTRs Duke Energy Total Level 3 derivatives $ 24 OTHER FAIR VALUE DISCLOSURES The fair value and book value of long-term debt, including current maturities, is summarized in the following table. The following disclosures include debt attributable to the Commercial Renewables Disposal Groups. See Note 2 for further details. 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. (in millions) Duke Energy(a) Duke Energy Carolinas Progress Energy Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana Piedmont December 31, 2022 December 31, 2021 Book Value Fair Value Book Value Fair Value $ 71,215 14,266 22,439 11,087 9,709 3,245 4,307 3,363 $ 63,454 12,943 20,467 9,689 8,991 2,927 3,913 2,940 $ 63,835 13,275 20,823 10,249 8,482 3,193 4,323 2,968 $ 69,683 15,101 23,751 11,252 9,772 3,570 5,067 3,278 (a) Book value of long-term debt includes $1.17 billion as of December 31, 2022, and $1.25 billion as of December 31, 2021, of unamortized debt discount and premium, net in purchase accounting adjustments related to the mergers with Progress Energy and Piedmont that are excluded from fair value of long-term debt. At both December 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. 174 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued)18. VARIABLE INTEREST ENTITIES A VIE is an entity that is evaluated for consolidation using more than a simple analysis of voting control. The analysis to determine whether an entity is a VIE considers contracts with an entity, credit support for an entity, the adequacy of the equity investment of an entity and the relationship of voting power to the amount of equity invested in an entity. This analysis is performed either upon the creation of a legal entity or upon the occurrence of an event requiring reevaluation, such as a significant change in an entity’s assets or activities. A qualitative analysis of control determines the party that consolidates a VIE. This assessment is based on (i) what party has the power to direct the activities of the VIE that most significantly impact its economic performance and (ii) what party has rights to receive benefits or is obligated to absorb losses that could potentially be significant to the VIE. The analysis of the party that consolidates a VIE is a continual reassessment. 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 years ended December 31, 2022, 2021 and 2020, 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 Receivables Financing – Credit Facilities 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 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 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. The following table summarizes the amounts and expiration dates of the credit facilities and associated restricted receivables described above. (in millions) Expiration date Credit facility amount Amounts borrowed at December 31, 2022 Amounts borrowed at December 31, 2021 Restricted Receivables at December 31, 2022 Restricted Receivables at December 31, 2021 Duke Energy Duke Energy Carolinas Duke Energy Progress Duke Energy Florida CRC DERF February 2025 $ 350 350 350 917 587 January 2025 $ 500 471 475 928 844 DEPR April 2025 $ 400 400 350 793 574 DEFR April 2023 $ 250 250 250 490 427 175 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued)Nuclear Asset-Recovery Bonds – Duke Energy Florida Project Finance, LLC (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 Consolidated Balance Sheets. (in millions) Receivables of VIEs Regulatory Assets: Current Current Assets: Other Other Noncurrent Assets: Regulatory assets Current Liabilities: Other Current maturities of long-term debt Long-Term Debt December 31, $ 2022 6 55 41 826 9 56 890 $ 2021 5 54 39 883 9 56 946 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. For additional information, see Notes 4 and 7. 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. (in millions) Regulatory Assets: Current Current Assets: Other Other Noncurrent Assets: Regulatory assets Other Noncurrent Assets: Other Current maturities of long-term debt Current Liabilities: Other Long-Term Debt Duke Energy Carolinas Duke Energy Progress December 31, December 31, 2022 2021 $ 12 8 208 1 10 3 $ 219 $ 12 — 220 1 5 1 $ 228 $ 2022 39 29 681 2 34 8 $ 714 2021 39 — 720 4 15 2 747 $ $ 176 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued)NON-CONSOLIDATED VIEs The following tables summarize the impact of non-consolidated VIEs on the Consolidated Balance Sheets. (in millions) Receivables from affiliated companies Investments in equity method unconsolidated affiliates Other noncurrent assets Total assets Other current liabilities Other noncurrent liabilities Total liabilities Net (liabilities) assets (in millions) Receivables from affiliated companies Investments in equity method unconsolidated affiliates Other noncurrent assets Total assets Other current liabilities Other noncurrent liabilities Total liabilities Net (liabilities) assets December 31, 2022 Duke Energy Natural Gas Investments $ — 43 45 $ 88 59 47 $ 106 $ (18) Duke Energy Ohio $ 198 — — $ 198 — — $ — $ 198 December 31, 2021 Duke Energy Natural Gas Investments $ — 15 61 $ 76 47 54 $ 101 $ (25) Duke Energy Ohio $ 79 — — $ 79 — — $ — $ 79 Duke Energy Indiana $ 317 — — $ 317 — — $ — $ 317 Duke Energy Indiana $ 97 — — $ 97 — — $ — $ 97 The Duke Energy Registrants are not aware of any situations where the maximum exposure to loss significantly exceeds the carrying values shown above. Natural Gas Investments Duke Energy has investments in various joint ventures including pipeline and renewable natural gas 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. CRC Duke Energy has a 47% ownership interest in ACP. In 2020, Duke Energy determined that it would no longer invest in the construction of the ACP pipeline. In February 2021, Duke Energy paid approximately $855 million to fund ACP’s outstanding debt, relieving Duke Energy of its guarantee. See Notes 4, 8 and 13 for further information regarding this transaction. 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. Carrying values of retained interests are determined by allocating carrying value of the receivables between assets sold and interests retained based on relative fair value. The allocated bases of the subordinated notes are not materially different than their face value because (i) the receivables generally turnover in less than two months, (ii) credit losses are reasonably predictable due to the broad customer base and lack of significant concentration and (iii) the equity in CRC is subordinate to all retained interests and thus would absorb losses first. The hypothetical effect on fair value of the retained interests assuming both a 10% and a 20% unfavorable variation in credit losses or discount rates is not material due to the short turnover of receivables and historically low credit loss history. Interest accrues to Duke Energy Ohio and Duke Energy Indiana on the retained interests using the acceptable yield method. This method generally approximates the stated rate on the notes since the allocated basis and the face value are nearly equivalent. An impairment charge is recorded against the carrying value of both retained interests and purchased beneficial interest whenever it is determined that an other-than-temporary impairment has occurred. 177 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued)Key assumptions used in estimating fair value are detailed in the following table. Anticipated credit loss ratio Discount rate Receivable turnover rate The following table shows the gross and net receivables sold. (in millions) Receivables sold Less: Retained interests Net receivables sold The following table shows sales and cash flows related to receivables sold. (in millions) Sales Receivables sold Loss recognized on sale Cash flows Cash proceeds from receivables sold Collection fees received Return received on retained interests Duke Energy Ohio Duke Energy Indiana 2022 0.5% 2.7% 13.5% 2021 0.5% 1.1% 13.5% 2022 0.3% 2.7% 11.3% 2021 0.3% 1.1% 11.3% Duke Energy Ohio Duke Energy Indiana December 31, December 31, 2022 $ 423 198 $ 225 2021 $ 269 79 $ 190 2022 $ 508 317 $ 191 2021 328 97 231 $ $ Duke Energy Ohio Duke Energy Indiana Years Ended December 31, Years Ended December 31, 2022 2021 2020 2022 2021 2020 $2,562 18 2,424 1 10 $2,023 10 2,018 1 4 $1,905 10 1,875 1 4 $3,744 26 $ 2,909 13 $ 2,631 12 3,498 2 15 2,909 1 6 2,586 1 5 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 Consolidated Statements of Cash Flows. Collection fees received in connection with servicing transferred accounts receivable are included in Operation, maintenance and other on Duke Energy Ohio’s and Duke Energy Indiana’s Consolidated Statements of Operations and Comprehensive Income. The loss recognized on sales of receivables is calculated monthly by multiplying receivables sold during the month by the required discount. The required discount is derived monthly utilizing a three- year weighted average formula that considers charge-off history, late charge history and turnover history on the sold receivables, as well as a component for the time value of money. The discount rate, or component for the time value of money, is the prior month-end Daily Simple SOFR plus a fixed rate of 1%. 19. REVENUE Duke Energy recognizes revenue consistent with amounts billed under tariff offerings or at contractually agreed upon rates based on actual physical delivery of electric or natural gas service, including estimated volumes delivered when billings have not yet occurred. As such, the majority of Duke Energy’s revenues have fixed pricing based on the contractual terms of the published tariffs, with variability in expected cash flows attributable to the customer’s volumetric demand and ultimate quantities of energy or natural gas supplied and used during the billing period. The stand-alone selling price of related sales are designed to support recovery of prudently incurred costs and an appropriate return on invested assets and are primarily governed by published tariff rates or contractual agreements approved by relevant regulatory bodies. As described in Note 1, certain excise taxes and franchise fees levied by state or local governments are required to be paid even if not collected from the customer. These taxes are recognized on a gross basis as part of revenues. Duke Energy elects to account for all other taxes net of revenues. Performance obligations are satisfied over time as energy or natural gas is delivered and consumed with billings generally occurring monthly and related payments due within 30 days, depending on regulatory requirements. In no 178 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued)event does the timing between payment and delivery of the goods and services exceed one year. Using this output method for revenue recognition provides a faithful depiction of the transfer of electric and natural gas service as customers obtain control of the commodity and benefit from its use at delivery. Additionally, Duke Energy has an enforceable right to consideration for energy or natural gas delivered at any discrete point in time and will recognize revenue at an amount that reflects the consideration to which Duke Energy is entitled for the energy or natural gas delivered. As described above, the majority of Duke Energy’s tariff revenues are at-will and, as such, related contracts with customers have an expected duration of one year or less and will not have future performance obligations for disclosure. Additionally, other long-term revenue streams, including wholesale contracts, generally provide services that are part of a single performance obligation, the delivery of electricity or natural gas. As such, other than material fixed consideration under long-term contracts, related disclosures for future performance obligations are also not applicable. Duke Energy earns substantially all of its revenues through its reportable segments, EU&I and GU&I. Electric Utilities and Infrastructure EU&I 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. Retail electric service is generally marketed throughout Duke Energy’s electric service territory through standard service offers. The standard service offers are through tariffs determined by regulators in Duke Energy’s regulated service territory. Each tariff, which is assigned to customers based on customer class, has multiple components such as an energy charge, a demand charge, a basic facilities charge and applicable riders. Duke Energy considers each of these components to be aggregated into a single performance obligation for providing electric service, or in the case of distribution only customers in Duke Energy Ohio, for delivering electricity. Electricity is considered a single performance obligation satisfied over time consistent with the series guidance and is provided and consumed over the billing period, generally one month. Retail electric service is typically provided to at-will customers who can cancel service at any time, without a substantive penalty. Additionally, Duke Energy adheres to applicable regulatory requirements in each jurisdiction to ensure the collectability of amounts billed and appropriate mitigating procedures are followed when necessary. As such, revenue from contracts with customers for such contracts is equivalent to the electricity supplied and billed in that period (including unbilled estimates). Wholesale electric service is generally provided under long-term contracts using cost-based pricing. FERC regulates costs that may be recovered from customers and the amount of return companies are permitted to earn. Wholesale contracts include both energy and demand charges. For full requirements contracts, Duke Energy considers both charges as a single performance obligation for providing integrated electric service. For contracts where energy and demand charges are considered separate performance obligations, energy and demand are each a distinct performance obligation under the series guidance and are satisfied as energy is delivered and stand-ready service is provided on a monthly basis. This service represents consumption over the billing period and revenue is recognized consistent with billings and unbilled estimates, which generally occur monthly. Contractual amounts owed are typically trued up annually based upon incurred costs in accordance with FERC published filings and the specific customer’s actual peak demand. Estimates of variable consideration related to potential additional billings or refunds owed are updated quarterly. 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: (in millions) Progress Energy Duke Energy Progress Duke Energy Florida Duke Energy Indiana Remaining Performance Obligations 2023 2024 2025 2026 2027 Thereafter $ 61 8 53 11 $ 66 8 58 16 $ 7 — 7 17 $ 7 — 7 15 $ 7 — 7 7 $ 36 — 36 5 Total $ 184 16 168 71 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 GU&I 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. Retail natural gas service is marketed throughout Duke Energy’s natural gas service territory using published tariff rates. The tariff rates are established by regulators in Duke Energy’s service territories. Each tariff, which is assigned to customers based on customer class, have multiple components, such as a commodity charge, demand charge, customer or monthly charge and transportation costs. Duke Energy considers each of these components to be aggregated into a single performance obligation for providing natural gas service. For contracts where Duke Energy provides all of the customer’s natural gas needs, the delivery of natural gas is considered a single performance obligation satisfied over time, and revenue is recognized monthly based on billings and unbilled estimates as service is provided and the commodity is consumed over the billing period. Additionally, natural gas service is typically at-will and customers can cancel service at any time, without a substantive penalty. Duke Energy also adheres to applicable regulatory requirements to ensure the collectability of amounts billed and receivable and appropriate mitigating procedures are followed when necessary. 179 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued)(in millions) Piedmont Other Certain long-term individually negotiated contracts exist to provide natural gas service. These contracts are regulated and approved by state commissions. The negotiated contracts have multiple components, including a natural gas and a demand charge, similar to retail natural gas contracts. Duke Energy considers each of these components to be a single performance obligation for providing natural gas service. This service represents consumption over the billing period, generally one month. Fixed capacity payments under long-term contracts for the GU&I 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 2023 $ 68 2024 $ 62 2025 $ 61 2026 $ 51 2027 Thereafter $ 49 $ 241 Total $ 532 The remainder of Duke Energy’s operations is presented as Other, which does not include material revenues from contracts with customers. Disaggregated Revenues For the EU&I and GU&I segments, revenue by customer class is most meaningful to Duke Energy as each respective customer class collectively represents unique customer expectations of service, generally has different energy and demand requirements, and operates under tailored, regulatory approved pricing structures. Additionally, each customer class is impacted differently by weather and a variety of economic factors including the level of population growth, economic investment, employment levels, and regulatory activities in each of Duke Energy’s jurisdictions. As such, analyzing revenues disaggregated by customer class allows Duke Energy to understand the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers. Disaggregated revenues are presented as follows: (in millions) By market or type of customer Electric Utilities and Infrastructure Residential General Industrial Wholesale Other revenues Total Electric Utilities and Infrastructure revenue from contracts with customers Gas Utilities and Infrastructure Residential Commercial Industrial Power Generation Other revenues Total Gas Utilities and Infrastructure revenue from contracts with customers Other Revenue from contracts with customers Total revenue from contracts with customers Other revenue sources(a) Total revenues Year Ended December 31, 2022 Duke Energy $ 11,377 7,356 3,504 2,856 795 Duke Energy Carolinas $ 3,275 2,396 1,251 561 372 Progress Energy $ 5,812 3,396 1,095 1,785 994 Duke Energy Progress $2,378 1,480 770 1,346 768 Duke Energy Florida $ 3,434 1,916 325 439 226 Duke Energy Ohio $ 862 517 202 127 61 Duke Energy Indiana $1,430 1,049 956 383 19 Piedmont $ — — — — — $ 25,888 $ 7,855 $ 13,082 $6,742 $ 6,340 $ 1,769 $3,837 $ — $ 1,462 765 170 — 360 $ — — — — — $ — — — — — $ — — — — — $ — — — — — $ 488 180 24 — 25 $ — — — — — $ 974 585 144 94 271 $ 2,757 $ — $ — $ — $ — $ 717 $ — $2,068 $ 30 $ 28,675 93 $ $ 28,768 $ — $ 7,855 2 $ $ 7,857 $ — $ 13,082 43 $ $ 13,125 $ — $6,742 $ 11 $6,753 $ — $ 6,340 13 $ $ 6,353 $ — $ 2,486 28 $ $ 2,514 $ — $3,837 85 $ $3,922 $ — $2,068 56 $ $2,124 (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. 180 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued)(in millions) By market or type of customer Electric Utilities and Infrastructure Residential General Industrial Wholesale Other revenues Total Electric Utilities and Infrastructure revenue from contracts with customers Gas Utilities and Infrastructure Residential Commercial Industrial Power Generation Other revenues Total Gas Utilities and Infrastructure revenue from contracts with customers Other Revenue from contracts with customers Total revenue from contracts with customers Other revenue sources(a) Total revenues Year Ended December 31, 2021 Duke Energy $ 10,097 6,375 2,924 2,199 879 Duke Energy Carolinas $ 3,054 2,210 1,145 472 264 Progress Energy $ 5,084 2,883 894 1,385 716 Duke Energy Progress $2,156 1,378 634 1,164 387 Duke Energy Florida $ 2,928 1,505 260 221 329 Duke Energy Ohio $ 767 440 135 56 83 Duke Energy Indiana $1,188 825 750 285 86 Piedmont $ — — — — — $ 22,474 $ 7,145 $ 10,962 $5,719 $ 5,243 $ 1,481 $3,134 $ — $ 1,131 561 158 — 133 $ — — — — — $ — — — — — $ — — — — — $ — — — — — $ 354 143 20 — 28 $ — — — — — $ 777 418 137 92 45 $ 1,983 $ — $ — $ — $ — $ 545 $ — $1,469 $ 29 $ 24,486 135 $ $ 24,621 $ — $ 7,145 (43) $ $ 7,102 $ — $ 10,962 95 $ $ 11,057 $ — $5,719 61 $ $5,780 $ — $ 5,243 16 $ $ 5,259 $ — $ 2,026 11 $ $ 2,037 $ — $3,134 40 $ $3,174 $ — $1,469 $ 100 $1,569 (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. (in millions) By market or type of customer Electric Utilities and Infrastructure Residential General Industrial Wholesale Other revenues Total Electric Utilities and Infrastructure revenue from contracts with customers Gas Utilities and Infrastructure Residential Commercial Industrial Power Generation Other revenues Total Gas Utilities and Infrastructure revenue from contracts with customers Other Revenue from contracts with customers Total revenue from contracts with customers Other revenue sources(a) Total revenues Year Ended December 31, 2020 Duke Energy $ 9,806 6,194 2,859 1,864 914 Duke Energy Carolinas $ 2,997 2,233 1,137 380 281 Progress Energy $ 5,017 2,779 901 1,228 596 Duke Energy Progress $2,059 1,312 649 1,034 294 Duke Energy Florida $ 2,958 1,467 252 194 302 Duke Energy Ohio $ 726 442 137 32 82 Duke Energy Indiana $1,064 740 683 224 72 Piedmont $ — — — — — $ 21,637 $ 7,028 $ 10,521 $5,348 $ 5,173 $ 1,419 $2,783 $ — $ 930 446 127 — 87 $ — — — — — $ — — — — — $ — — — — — $ — — — — — $ 300 117 17 — 17 $ — — — — — $ 630 329 110 34 70 $ 1,590 $ — $ — $ — $ — $ 451 $ — $1,173 $ 26 $ 23,253 113 $ $ 23,366 $ — $ 7,028 (13) $ $ 7,015 $ — $ 10,521 106 $ $ 10,627 $ — $5,348 74 $ $5,422 $ — $ 5,173 15 $ $ 5,188 $ — $ 1,870 (12) $ $ 1,858 $ — $2,783 12 $ $2,795 $ — $1,173 $ 124 $1,297 (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. 181 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued)As described in Note 1, 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. (in millions) Balance at December 31, 2019 Cumulative Change in Accounting Principle Write-Offs Credit Loss Expense Other Adjustments $ Duke Energy 76 5 (58) 75 48 Duke Energy Carolinas $ 10 1 (13) 13 12 Balance at December 31, 2020 $ 146 $ 23 Write-Offs Credit Loss Expense Other Adjustments Balance at December 31, 2021 Write-Offs Credit Loss Expense Other Adjustments Balance at December 31, 2022 (58) 53 (20) $ 121 (158) 160 93 216 $ (21) 27 13 42 (73) 40 59 68 $ $ Progress Energy Duke Energy Progress $ $ $ $ 16 2 (23) 29 13 37 (25) 25 (1) 36 (70) 72 43 81 $ $ $ $ 8 1 (8) 9 13 23 (12) 11 (1) 21 (36) 17 42 44 Duke Energy Florida $ 7 1 (14) 20 — $ 14 (13) 14 1 16 (34) 55 (1) 36 $ $ Duke Energy Ohio Duke Energy Indiana Piedmont $ $ $ $ 4 — — — — 4 — — — 4 — 2 — 6 $ $ $ $ 3 — — — — 3 — — — 3 — 1 — 4 $ $ 6 1 (6) 11 — 12 (9) 7 5 $ 15 (12) 11 — 14 $ 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. (in millions) Unbilled Receivables(a)(b) Current 1-30 days past due 31-60 days past due 61-90 days past due 91+ days past due Deferred Payment Arrangements(c) Trade and Other Receivables Duke Energy $ 1,457 2,347 261 123 74 209 160 $ 4,631 Duke Energy Carolinas $ 486 577 96 23 25 70 57 $ 1,334 December 31, 2022 Progress Energy $ 355 1,059 60 61 18 74 62 $ 1,689 Duke Energy Progress $ 232 637 15 49 9 27 35 $1,004 Duke Energy Florida $ 123 417 45 12 9 47 27 $ 680 Duke Energy Ohio Duke Energy Indiana $ $ 20 15 5 6 3 26 4 79 $ 28 52 17 2 11 6 — $ 116 Piedmont $ 160 265 15 3 2 4 1 $ 450 182 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued)(in millions) Unbilled Receivables(a)(b) Current 1-30 days past due 31-60 days past due 61-90 days past due 91+ days past due Deferred Payment Arrangements(c) Trade and Other Receivables $ Duke Energy 922 1,941 288 98 118 161 115 $ 3,643 Duke Energy Carolinas $ 316 592 77 30 32 84 55 $ 1,186 December 31, 2021 Progress Energy $ 266 716 128 49 48 37 45 $ 1,289 Duke Energy Progress $ 193 405 44 21 28 9 22 $ 722 Duke Energy Florida $ $ 73 311 82 28 20 28 23 565 Duke Energy Ohio Duke Energy Indiana $ 4 42 4 1 23 24 2 $ 27 50 5 10 5 6 — $ 100 $ 103 Piedmont $ 106 202 12 2 4 3 4 $ 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 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 Consolidated Balance Sheets of Duke Energy Ohio and Duke Energy Indiana. See Note 18 for further information. These receivables for unbilled revenues are $148 million and $260 million for Duke Energy Ohio and Duke Energy Indiana, respectively, as of December 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 ongoing financial hardships impacting customers, Duke Energy has permitted customers to defer payment of past-due amounts through installment payment plans. 20. 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 RSUs that are entitled to dividends declared on Duke Energy common stock during the RSUs vesting periods. Dividends declared on preferred stock are recorded on the 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. 183 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued)(in millions, except per share amounts) Net Income available to Duke Energy common stockholders Less: (Loss) Income from discontinued operations attributable to Duke Energy common stockholders Accumulated preferred stock dividends adjustment Less: Impact of participating securities Income from continuing operations available to Duke Energy common stockholders Loss from discontinued operations, net of tax Add: Loss attributable to NCI (Loss) Income from discontinued operations attributable to Duke Energy common stockholders Weighted average common shares outstanding – basic Equity forwards Weighted average common shares outstanding – diluted EPS from continuing operations available to Duke Energy common stockholders Basic and Diluted (Loss) Earnings Per Share from discontinued operations attributable to Duke Energy common stockholders Basic and Diluted Potentially dilutive items excluded from the calculation(a) Dividends declared per common share Dividends declared on Series A preferred stock per depositary share(b) Dividends declared on Series B preferred stock per share(c) Years Ended December 31, 2022 2021 2020 $ 2,444 (1,215) — 2 $ 3,657 $ (1,323) 108 $ (1,215) 770 — 770 $ 3,802 200 — 3 $ 3,599 $ (144) 344 200 769 — 769 $ $ $ $ 1,270 289 1 2 980 (7) 296 289 737 1 738 $ $ 4.74 $ 4.68 $ 1.33 $ (1.57) 2 $ 3.98 $ 1.437 $ 48.750 $ 0.26 2 $ 3.90 $ 1.437 $48.750 $ 0.39 2 $ 3.82 $ 1.437 $49.292 (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. On September 16, 2024, the First Call Date, and any fifth anniversary of the First Call Date, the dividend rate will reset based on the then current five-year U.S. Treasury rate plus a spread of 3.388%. Common Stock In November 2022, Duke Energy filed a prospectus supplement and executed an EDA under which it may sell up to $1.5 billion of its common stock through a new ATM offering program, including an equity forward sales component. Under the terms of the EDA, Duke Energy may issue and sell shares of common stock through September 2025. Preferred Stock The Series A Preferred Stock has no maturity or mandatory redemption date, is not redeemable at the option of the holders and includes separate call options. The first call option allows Duke Energy to call the Series A Preferred Stock at a redemption price of $25.50 per depositary share prior to June 15, 2024, in whole but not in part, at any time within 120 days after a ratings event where a rating agency amends, clarifies or changes the criteria it uses to assign equity credit for securities such as the preferred stock. The second call option allows Duke Energy to call the preferred stock, in whole or in part, at any time, on or after June 15, 2024, at a redemption price of $25 per depositary share. Duke Energy is also required to redeem all accumulated and unpaid dividends if either call option is exercised. The Series B Preferred Stock has no maturity or mandatory redemption date, is not redeemable at the option of the holders and includes separate call options. The first call option allows Duke Energy to call the Series B Preferred Stock at a redemption price of $1,020 per share, in whole but not in part, at any time within 120 days after a ratings event. The second call option allows Duke Energy to call the preferred stock, in whole or in part, on the First Call Date or any subsequent Reset Date at a redemption price in cash equal to $1,000 per share. Duke Energy is also required to redeem all accumulated and unpaid dividends if either call option is exercised. Dividends issued on its Series A and Series B Preferred Stock are subject to approval by the Board of Directors. However, the deferral of dividend payments on the preferred stock prohibits the declaration of common stock dividends. The Series A and Series B Preferred Stock rank, with respect to dividends and distributions upon liquidation or dissolution: • senior to Common Stock and to each other class or series of capital stock established after the original issue date of the Series A and Series B Preferred Stock that is expressly made subordinated to the Series A and Series B Preferred Stock; • on a parity with any class or series of capital stock established after the original issue date of the Series A and Series B Preferred Stock that is not expressly made senior or subordinated to the Series A or Series B Preferred Stock; • junior to any class or series of capital stock established after the original issue date of the Series A and Series B Preferred Stock that is expressly made senior to the Series A or Series B Preferred Stock; • junior to all existing and future indebtedness (including indebtedness outstanding under Duke Energy’s credit facilities, unsecured senior notes, junior subordinated debentures and commercial paper) and other liabilities with respect to assets available to satisfy claims against Duke Energy; and • structurally subordinated to existing and future indebtedness and other liabilities of Duke Energy’s subsidiaries and future preferred stock of subsidiaries. Holders of Series A and Series B Preferred Stock have no voting rights with respect to matters that generally require the approval of voting stockholders. 184 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued)The limited voting rights of holders of Series A and Series B Preferred Stock include the right to vote as a single class, respectively, on certain matters that may affect the preference or special rights of the preferred stock, except in the instance that Duke Energy elects to defer the payment of dividends for a total of six quarterly full dividend periods for Series A Preferred Stock or three semiannual full dividend periods for Series B Preferred Stock. If dividends are deferred for a cumulative total of six quarterly full dividend periods for Series A Preferred Stock or three semiannual full dividend periods for Series B Preferred Stock, whether or not for consecutive dividend periods, holders of the respective preferred stock have the right to elect two additional Board members to the Board of Directors. 21. SEVERANCE During 2022, Duke Energy identified opportunities to eliminate work and create sustainable savings through a workload reduction initiative with a focus on process improvement through digital technology, governance simplification and elimination of low-value work. As a result, Duke Energy extended involuntary severance benefits to certain employees in specific areas as a part of this initiative. During 2021, Duke Energy reviewed its operations and identified opportunities for improvement to better serve its customers. This operational review included workforce realignment to ensure the company is staffed with the right skill sets and number of teammates to execute the long-term vision for Duke Energy. As such, Duke Energy extended involuntary severance benefits to certain employees in specific areas as a part of these workforce realignment efforts. During 2020, as a result of partial settlements between Duke Energy Carolinas, Duke Energy Progress and the Public Staff, Duke Energy Carolinas and Duke Energy Progress deferred as Regulatory assets on the Consolidated Balance Sheets, approximately $65 million and $33 million, respectively, of previously recorded severance charges within Operation, maintenance and other on the Consolidated Statements of Operations. These severance charges were previously recorded during 2018, as Duke Energy reviewed its operations and identified opportunities for improvement to better serve its customers. This operational review included the company’s workforce strategy and staffing levels to ensure the company was staffed with the right skill sets and number of teammates to execute the long-term vision for Duke Energy. As such, Duke Energy extended voluntary and involuntary severance benefits to certain employees in specific areas as a part of workforce planning and digital transformation efforts. The following table presents the direct and allocated severance and related charges accrued for approximately 233 employees in 2022, 290 employees in 2021 and 30 employees in 2020, by the Duke Energy Registrants within Operation, maintenance and other on the Consolidated Statements of Operations. (in millions) Year Ended December 31, 2022(a)(b) Year Ended December 31, 2021(c)(d) Year Ended December 31, 2020(e)(f) Duke Energy $ 65 69 (85) Duke Energy Carolinas Progress Energy Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana $ 40 $ 33 (58) 20 26 (28) $ 17 20 (31) $ 3 $ 1 $ 6 3 2 — 2 3 — Piedmont $ 2 2 — (a) (b) (c) (d) (e) (f) Includes amortization of deferred severance charges of approximately $33 million, $22 million, $11 million and $11 million for Duke Energy, Duke Energy Carolinas, Progress Energy and Duke Energy Progress, respectively. Includes adjustments associated with 2021 severance charges of approximately $(19) million, $(6) million, $(8) million, $(4) million, $(4) million, $(1) million, $(2) million and $(1) million for Duke Energy, Duke Energy Carolinas, Progress Energy, Duke Energy Progress, Duke Energy Florida, Duke Energy Ohio, Duke Energy Indiana and Piedmont, respectively. Includes amortization of deferred severance charges of approximately $33 million, $22 million, $11 million and $11 million for Duke Energy, Duke Energy Carolinas, Progress Energy and Duke Energy Progress, respectively. Includes adjustments associated with 2018 severance charges of approximately $(3) million, $(2) million and $(1) million for Duke Energy, Duke Energy Carolinas and Duke Energy Indiana, respectively. Includes unamortized deferred severance charges of approximately $(86) million, $(57) million, $(29) million and $(29) million for Duke Energy, Duke Energy Carolinas, Progress Energy and Duke Energy Progress, respectively. Includes adjustments associated with 2018 severance charges of approximately $(6) million, $(2) million, $(3) million and $(2) million for Duke Energy, Duke Energy Carolinas, Progress Energy and Duke Energy Progress, respectively. The table below presents the severance liability for past and ongoing severance plans including the plans described above. (in millions) Balance at December 31, 2020 Provision/Adjustments Cash Reductions Balance at December 31, 2021 Provision/Adjustments Cash Reductions Balance at December 31, 2022 Duke Energy $ 11 36 (8) $ 39 33 (8) $ 64 Duke Energy Carolinas Progress Energy $ $ 3 1 (2) 2 4 — $ 6 $ 2 1 (1) $ 2 14 (1) $ 15 185 Duke Energy Progress $ 1 1 (1) $ 1 3 — $ 4 Duke Energy Florida Duke Energy Ohio Duke Energy Indiana Piedmont $ 2 — (1) $ 1 1 — $ 2 $— — — $— — — $— $ 1 — (1) $— — — $— $ — — — $ — 1 — $ 1 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued)22. STOCK-BASED COMPENSATION The Duke Energy Corporation 2015 Long-Term Incentive Plan (the 2015 The total grant date fair value of shares vested during the years ended Plan) provides for the grant of stock-based compensation awards to employees and outside directors. The 2015 Plan reserved 10 million shares of common stock for issuance. Duke Energy has historically issued new shares upon exercising or vesting of share-based awards. However, Duke Energy may use a combination of new share issuances and open market repurchases for share-based awards that are exercised or vest in the future. Duke Energy has not determined with certainty the amount of such new share issuances or open market repurchases. The following table summarizes the total expense recognized by the Duke Energy Registrants, net of tax, for stock-based compensation. (in millions) Duke Energy Duke Energy Carolinas Progress Energy Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana Piedmont Years Ended December 31, 2022 $ 74 27 27 17 10 5 7 4 2021 $ 64 23 24 15 9 5 6 3 $ 2020 61 22 23 15 9 4 6 3 Duke Energy’s pretax stock-based compensation costs, the tax benefit associated with stock-based compensation expense and stock-based compensation costs capitalized are included in the following table. (in millions) RSU awards Performance awards Pretax stock-based compensation cost Stock-based compensation costs capitalized Stock-based compensation expense Tax benefit associated with stock-based compensation expense Years Ended December 31, 2022 $ 58 42 $100 5 $ 95 $ 21 2021 2020 $ 49 39 $ 88 5 $ 83 $ 19 $ 46 38 $ 84 5 $ 79 $ 18 RESTRICTED STOCK UNIT AWARDS RSU awards generally vest over periods from immediate to three years. Fair value amounts are based on the market price of Duke Energy’s common stock on the grant date. The following table includes information related to RSU awards. Shares granted (in thousands) Fair value (in millions) Years Ended December 31, 2022 654 $ 64 2021 673 $ 59 2020 498 $ 50 The following table summarizes information about RSU awards outstanding. Shares (in thousands) Weighted Average Grant Date Fair Value (per share) Outstanding at December 31, 2021 Granted Vested Forfeited Outstanding at December 31, 2022 RSU awards expected to vest 1,043 654 (527) (73) 1,097 1,056 $ 92 98 93 94 95 95 186 December 31, 2022, 2021 and 2020, was $49 million, $45 million and $43 million, respectively. At December 31, 2022, Duke Energy had $34 million of unrecognized compensation cost, which is expected to be recognized over a weighted average period of 23 months. PERFORMANCE AWARDS Stock-based performance awards generally vest after three years to the extent performance targets are met. The actual number of shares issued will range from zero to 200% of target shares, depending on the level of performance achieved. Performance awards contain performance conditions and a market condition. The performance conditions are based on Duke Energy’s cumulative adjusted EPS and total incident case rate (total incident case rate is one of our key employee safety metrics). The market condition is based on TSR of Duke Energy relative to a predefined peer group. Relative TSR is valued using a path-dependent model that incorporates expected relative TSR into the fair value determination of Duke Energy’s performance-based share awards. The model uses three-year historical volatilities and correlations for all companies in the predefined peer group, including Duke Energy, to simulate Duke Energy’s relative TSR as of the end of the performance period. For each simulation, Duke Energy’s relative TSR associated with the simulated stock price at the end of the performance period plus expected dividends within the period results in a value per share for the award portfolio. The average of these simulations is the expected portfolio value per share. Actual life to date results of Duke Energy’s relative TSR for each grant are incorporated within the model. For performance awards granted in 2022, the model used a risk-free interest rate of 1.78%, which reflects the yield on three-year Treasury bonds as of the grant date, and an expected volatility of 26.8% based on Duke Energy’s historical volatility over three years using daily stock prices. The following table includes information related to stock-based performance awards. Shares granted assuming target performance (in thousands) Fair value (in millions) Years Ended December 31, 2022 408 $ 40 2021 2020 380 319 $ 33 $ 34 The following table summarizes information about stock-based performance awards outstanding and assumes payout at the target level. Shares (in thousands) Weighted Average Grant Date Fair Value (per share) Outstanding at December 31, 2021 Granted Vested Forfeited Outstanding at December 31, 2022 Stock-based performance awards expected to vest 952 408 (297) (30) 1,033 1,006 $ 93 99 86 96 97 97 The total grant date fair value of shares vested during the years ended December 31, 2022, and 2021, was $25 million and $25 million, respectively. At December 31, 2022, Duke Energy had $22 million of unrecognized compensation cost, which is expected to be recognized over a weighted average period of 22 months. PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued) 23. EMPLOYEE BENEFIT PLANS DEFINED BENEFIT RETIREMENT PLANS Duke Energy and certain subsidiaries maintain, and the Subsidiary Registrants participate in, qualified, non-contributory defined benefit retirement plans, which consist of the Duke Energy Retirement Cash Balance Plan (RCBP), which is an active plan, and the Duke Energy Legacy Pension Plan (DELPP), which is an inactive plan. These plans cover most employees using a cash balance formula. Under a cash balance formula, a plan participant accumulates a retirement benefit consisting of pay credits based upon a percentage of current eligible earnings, age or age and years of service and interest credits. Certain employees are eligible for benefits that use a final average earnings formula. Under these final average earnings formulas, a plan participant accumulates a retirement benefit equal to the sum of percentages of their (i) highest three-, four-, or five-year average earnings, (ii) highest three-, four-, or five-year average earnings in excess of covered compensation per year of participation (maximum of 35 years) or (iii) highest three-year average earnings times years of participation in excess of 35 years. Duke Energy also maintains, and the Subsidiary Registrants participate in, non-qualified, non-contributory defined benefit retirement plans that cover certain executives. The qualified and non- qualified, non-contributory defined benefit plans are closed to new participants. Duke Energy uses a December 31 measurement date for its defined benefit retirement plan assets and obligations. Actuarial losses experienced by the defined benefit retirement plans in remeasuring plan assets on December 31, 2022, were primarily attributable to actual investment performance that was less than expected investment performance. Actuarial gains experienced by the defined benefit retirement plans in remeasuring plan obligations as of December 31, 2022, were primarily attributable to the increase in the discount rate used to measure plan obligations. Actuarial losses experienced by the defined benefit retirement plans in remeasuring plan assets as of December 31, 2021, were primarily attributable to actual investment performance that was less than expected investment performance. Actuarial gains experienced by the defined benefit retirement plans in remeasuring plan obligations as of December 31, 2021, were primarily attributable to the increase in the discount rate used to measure plan obligations. As a result of the application of settlement accounting due to total lump-sum benefit payments exceeding the settlement threshold (defined as the sum of service cost and interest cost on projected benefit obligation components of net periodic benefit costs) for one of its qualified pension plans, Duke Energy recognized settlement charges of $117 million, of which $95 million was recorded to Regulatory Assets within Other Noncurrent Assets on the Condensed Consolidated Balance Sheets and $22 million was recorded to Other Income and Expenses, net, within the Condensed Consolidated Statement of Operations as of December 31, 2022. Settlement charges recognized by the Subsidiary Registrants as of December 31, 2022, which represent amounts allocated by Duke Energy for employees of the Subsidiary Registrants and allocated charges for their proportionate share of settlement charges for employees of Duke Energy’s shared services affiliate, and recorded to Regulatory Assets within Other Noncurrent Assets on the Condensed Consolidated Balance Sheets were $35 million for Duke Energy Carolinas, $23 million for Progress Energy, $16 million for Duke Energy Progress, $7 million for Duke Energy Florida, $8 million for Duke Energy Indiana and $29 million for Piedmont. Settlement charges recognized by the Subsidiary Registrants as of December 31, 2022, recorded to Other Income and Expenses, net, within the Condensed Consolidated Statement of Operations were $3 million for Duke Energy Carolinas, $5 million for Progress Energy, $5 million for Duke Energy Progress, $1 million for Duke Energy Florida, $5 million for Duke Energy Ohio and $6 million for Piedmont. The settlement charges reflect the recognition of a pro-rata portion of previously unrecognized actuarial losses, equal to the percentage of reduction in the projected benefit obligation resulting from total lump-sum benefit payments as of December 31, 2022. Settlement charges recognized as a regulatory asset within Other Noncurrent Assets on the Consolidated Balance Sheets are amortized over the average remaining service period for participants in the plan. Amortization of settlement charges is disclosed in the tables below as a component of net periodic pension costs. Effective December 31, 2022, Duke Energy Florida changed its method for calculating the market related value of plan assets (MRVA) from the fair value method to a method that recognizes changes in fair value of its plan assets over a five-year period. This represents a change in regulatory treatment that will serve to mitigate the impact of market volatility on retail customer rates, resulting in the timing of net periodic pension cost recognition that is more consistent with treatment of the related cost in the ratemaking process. The three-year retrospective impact of this method change of $24 million was recognized by Duke Energy, Progress Energy and Duke Energy Florida, respectively, and was recorded to Other Income and Expenses, net, within the Condensed Consolidated Statement of Operations and has been disclosed in the tables below as a component of net periodic pension costs. Net periodic benefit costs disclosed in the tables below represent the cost of the respective benefit plan for the periods presented prior to capitalization of amounts reflected as Net property, plant and equipment, on the Consolidated Balance Sheets. Only the service cost component of net periodic benefit costs is eligible to be capitalized. The remaining non-capitalized portions of net periodic benefit costs are classified as either: (1) service cost, which is recorded in Operations, maintenance and other on the Consolidated Statements of Operations; or as (2) components of non-service cost, which is recorded in Other income and expenses, net on the Consolidated Statements of Operations. Amounts presented in the tables below for the Subsidiary Registrants represent the amounts of pension and other post-retirement benefit cost allocated by Duke Energy for employees of the Subsidiary Registrants. Additionally, the Consolidated Statements of Operations of the Subsidiary Registrants also include allocated net periodic benefit costs for their proportionate share of pension and post-retirement benefit cost for employees of Duke Energy’s shared services affiliate that provide support to the Subsidiary Registrants. However, in the tables below, these amounts are only presented within the Duke Energy column (except for amortization of settlement charges). These allocated amounts are included in the governance and shared service costs discussed in Note 14. 187 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued)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. The following table includes information related to the Duke Energy Registrants’ contributions to its qualified defined benefit pension plans. There were no contributions made in the years ended December 31, 2021 and 2020. Duke Energy Duke Energy Carolinas Progress Energy Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana Piedmont $ 58 $ 15 $ 13 $ 8 $ 5 $ 3 $ 5 $ 2 (in millions) Contributions Made: 2022 QUALIFIED PENSION PLANS Components of Net Periodic Pension Costs (in millions) Service cost Interest cost on projected benefit obligation Expected return on plan assets Amortization of actuarial loss Amortization of prior service credit Amortization of settlement charges(c) MRVA method change Net periodic pension costs(a)(b) (in millions) Service cost Interest cost on projected benefit obligation Expected return on plan assets Amortization of actuarial loss Amortization of prior service credit Amortization of settlement charges Net periodic pension costs(a)(b) $ $ $ $ Year Ended December 31, 2022 Duke Energy Duke Energy Carolinas Progress Energy Duke Energy Progress Duke Energy Florida Duke Energy Ohio 152 249 (558) 81 (18) 32 24 (38) $ $ 48 59 (152) 16 (3) 9 — (23) $ $ 43 77 (183) 23 — 8 24 (8) $ $ 25 35 (88) 12 — 7 — (9) $ $ 17 41 (94) 12 — 1 24 1 $ $ 4 13 (23) 4 — 5 — 3 Year Ended December 31, 2021 Duke Energy Duke Energy Carolinas Progress Energy Duke Energy Progress Duke Energy Florida Duke Energy Ohio 176 220 (558) 133 (29) 9 (49) $ $ 56 51 (141) 29 (8) 5 (8) $ $ 50 70 (187) 38 (2) 2 (29) $ $ 29 30 (84) 18 (1) 2 (6) $ $ 21 39 (102) 20 (1) 1 (22) $ $ 5 13 (28) 7 (1) — (4) Duke Energy Indiana $ 9 20 (37) 9 (2) 1 — $ — Duke Energy Indiana $ $ 10 18 (40) 13 (2) — (1) Piedmont $ $ 5 8 (24) 5 (7) 7 — (6) Piedmont $ $ 6 7 (20) 10 (9) 1 (5) Year Ended December 31, 2020 (in millions) Service cost Interest cost on projected benefit obligation Expected return on plan assets Amortization of actuarial loss Amortization of prior service credit Amortization of settlement charges(c) Net periodic pension costs(a)(b) Duke Energy Duke Energy Carolinas Progress Energy Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana Piedmont $ $ 165 269 (572) 128 (32) 18 (24) $ $ 51 62 (145) 28 (8) 9 (3) $ $ 48 85 (190) 41 (3) 7 (12) $ 27 38 (87) 18 (2) 6 $ — $ 21 46 (101) 23 (1) 1 $ (11) $ $ 5 15 (28) 6 — — (2) $ 9 22 (42) 12 (2) 1 $ — $ $ 6 9 (21) 9 (9) 1 (5) (a) Duke Energy amounts exclude $3 million, $3 million and $4 million for the years ended December 2022, 2021 and 2020, respectively, of regulatory asset amortization resulting from purchase accounting adjustments associated with Duke Energy’s merger with Cinergy in April 2006. (b) Duke Energy Ohio amounts exclude $1 million, $1 million and $2 million for the years ended December 2022, 2021 and 2020, respectively, of regulatory asset amortization resulting from purchase accounting adjustments associated with Duke Energy’s merger with Cinergy in April 2006. Includes settlement charges not deferred as a regulatory asset. (c) 188 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued)Amounts Recognized in Accumulated Other Comprehensive Income and Regulatory Assets (in millions) Regulatory assets, net increase (decrease) Accumulated other comprehensive loss (income) Deferred income tax expense Amortization of prior year service credit Amortization of prior year actuarial losses Net amount recognized in accumulated other comprehensive income Year Ended December 31, 2022 Duke Energy Duke Energy Carolinas Progress Energy Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana Piedmont $ 367 $ (7) — 37 $ 30 $ 221 $ — — — $ — $ 107 $ 101 $ (1) — 2 $ 1 $ — — — $ — $ 5 $ — — — $ — $ (1) $ (12) $ — — — $ — $ — — — $ — $ 9 $ — — — $ — (in millions) Regulatory assets, net decrease Accumulated other comprehensive loss (income) Deferred income tax expense Amortization of prior year service credit Amortization of prior year actuarial losses Net amount recognized in accumulated other comprehensive income Year Ended December 31, 2021 Duke Energy Duke Energy Carolinas Progress Energy Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana Piedmont $(261) $ (57) $(128) $ (31) $ (97) $ (17) $ (19) $ (5) $ 1 1 (8) $ — — — $ — — (1) $ — — — $ (6) $ — $ (1) $ — $ — — — $ — $ — — — $ — $ — — — $ — $ — — — $ — Reconciliation of Funded Status to Net Amount Recognized (in millions) Change in Projected Benefit Obligation Obligation at prior measurement date Service cost Interest cost Actuarial gain Benefits paid Transfers Obligation at measurement date Accumulated Benefit Obligation at measurement date Change in Fair Value of Plan Assets Plan assets at prior measurement date Employer contributions Actual return on plan assets Benefits paid Transfers Plan assets at measurement date Funded status of plan Year Ended December 31, 2022 Duke Energy Carolinas Progress Energy Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana Piedmont $ 1,903 47 59 (301) (159) 5 $ 1,554 $ 1,556 $ 2,365 15 (411) (159) 5 $ 1,815 261 $ $ 2,560 40 77 (513) (184) (5) $ 1,975 $ 1,959 $ 3,053 13 (506) (184) (5) $ 2,371 396 $ $ 1,153 24 35 (197) (101) (5) 909 910 $ $ $ 1,421 8 (240) (101) (5) $ 1,083 174 $ $ 1,392 16 41 (312) (82) — $ 1,055 $ 1,038 $ 1,610 5 (262) (82) — $ 1,271 216 $ $ 450 4 13 (84) (50) — $ 333 $ 327 $ 438 3 (68) (50) — $ 323 $ (10) $ 680 8 20 (143) (66) — $ 499 $ 495 $ 669 5 (107) (66) — $ 501 2 $ $ 273 5 8 (47) (69) — $ 170 $ 170 $ 334 2 (64) (69) — $ 203 33 $ Duke Energy $ 8,207 145 249 (1,490) (753) — $ 6,358 $ 6,324 $ 9,235 58 (1,547) (753) — $ 6,993 635 $ 189 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued)Year Ended December 31, 2021 Duke Energy Carolinas Progress Energy Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana Piedmont $ 1,988 54 51 (42) (148) — $ 1,903 $ 1,904 $ 2,381 132 (148) — $ 2,365 462 $ $ 2,715 48 70 (108) (161) (4) $ 2,560 $ 2,529 $ 3,049 169 (161) (4) $ 3,053 493 $ $ 1,193 28 30 (18) (80) — $ 1,153 $ 1,154 $ 1,422 79 (80) — $ 1,421 268 $ $ 1,507 20 39 (89) (81) (4) $ 1,392 $ 1,361 $ 1,605 90 (81) (4) $ 1,610 218 $ $ 502 5 13 (10) (50) (10) $ 450 $ 439 $ 472 26 (50) (10) $ 438 $ (12) $ 715 9 18 (10) (52) — $ 680 $ 672 $ 684 37 (52) — $ 669 $ (11) $ 293 6 7 (5) (28) — $ 273 $ 274 $ 343 19 (28) — $ 334 61 $ Duke Energy $ 8,634 168 220 (200) (615) — $ 8,207 $ 8,144 $ 9,337 513 (615) — $ 9,235 $ 1,028 (in millions) Change in Projected Benefit Obligation Obligation at prior measurement date Service cost Interest cost Actuarial gain Benefits paid Transfers Obligation at measurement date Accumulated Benefit Obligation at measurement date Change in Fair Value of Plan Assets Plan assets at prior measurement date Actual return on plan assets Benefits paid Transfers Plan assets at measurement date Funded status of plan Amounts Recognized in the Consolidated Balance Sheets (in millions) Prefunded pension(a) Noncurrent pension liability(b) Net asset (liability) recognized Regulatory assets Accumulated other comprehensive (income) loss Deferred income tax benefit Prior service credit Net actuarial loss Net amounts recognized in accumulated other comprehensive loss (in millions) Prefunded pension(a) Noncurrent pension liability(b) Net asset (liability) recognized Regulatory assets Accumulated other comprehensive (income) loss Deferred income tax benefit Prior service credit Net actuarial loss Net amounts recognized in accumulated other comprehensive loss Duke Energy Carolinas Progress Energy December 31, 2022 Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana Piedmont $ 261 $ — $ 261 $ 545 $ — — — $ — $ 396 $ — $ 396 $ 670 $ $ (1) — 3 2 $ 174 $ — $ 174 $ 353 $ — — — $ — $ 216 $ — $ 216 $ 316 $ — — — $ — $ 62 $ 72 $ (10) $ 92 $ — — — $ — 90 $ 88 $ 2 $ $ 178 $ — — — $ — $ 33 $ — $ 33 $ 84 $ — — — $ — Duke Energy Carolinas Progress Energy December 31, 2021 Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana Piedmont $ 462 $ — $ 462 $ 324 $ — — — $ — $ 494 $ 1 $ 493 $ 563 $ — — 1 1 $ $ 268 $ — $ 268 $ 252 $ — — — $ — $ 219 $ 1 $ 218 $ 311 $ — — — $ — $ 74 $ 86 $ (12) $ 93 $ — — — $ — $ 100 $ 111 $ (11) $ 190 $ — — — $ — $ 61 $ — $ 61 $ 75 $ — — — $ — Duke Energy 885 $ 250 $ 635 $ $ 2,016 $ $ (27) (1) 129 101 Duke Energy $ 1,071 $ 43 $ 1,028 $ 1,649 $ $ (20) (1) 92 71 (a) (b) Included in Other within Other Noncurrent Assets on the Consolidated Balance Sheets. Included in Accrued pension and other post-retirement benefit costs on the Consolidated Balance Sheets. 190 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued)Information for Plans with Accumulated Benefit Obligation in Excess of Plan Assets (in millions) Projected benefit obligation Accumulated benefit obligation Fair value of plan assets (in millions) Projected benefit obligation Accumulated benefit obligation Fair value of plan assets December 31, 2022 Duke Energy $ 3,323 3,288 3,073 Duke Energy Ohio $ 103 99 31 Duke Energy Indiana $ 198 193 110 December 31, 2021 Duke Energy Ohio $ 153 143 67 Duke Energy Indiana $ 284 275 173 Assumptions Used for Pension Benefits Accounting The discount rate used to determine the current year pension obligation and following year’s pension expense is based on a bond selection-settlement portfolio approach. This approach develops a discount rate by selecting a portfolio of high-quality corporate bonds that generate sufficient cash flow to provide for projected benefit payments of the plan. The selected bond portfolio is derived from a universe of non-callable corporate bonds rated Aa quality or higher. After the bond portfolio is selected, a single interest rate is determined that equates the present value of the plan’s projected benefit payments discounted at this rate with the market value of the bonds selected. The average remaining service period for participants in active plans and life expectancy of participants in inactive plans is 13 years for Duke Energy and Duke Energy Progress, 15 years for Duke Energy Florida and Duke Energy Ohio, 14 years for Progress Energy and Duke Energy Indiana, 12 years for Duke Energy Carolinas and nine years for Piedmont. The following tables present the assumptions or range of assumptions used for pension benefit accounting. Benefit Obligations Discount rate Interest crediting rate Salary increase Net Periodic Benefit Cost Discount rate Interest crediting rate Salary increase Expected long-term rate of return on plan assets 2022 2021 2020 December 31, 5.60% 4.35% 3.50% – 4.00% 2.90% – 5.70% 4.00% 3.50% – 4.00% 6.50% 2.90% 4.00% 3.50% – 4.00% 2.60% 4.00% 3.50% – 4.00% 6.50% 2.60% 4.00% 3.50% – 4.00% 3.30% 4.00% 3.50% – 4.00% 6.85% 191 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued)Expected Benefit Payments (in millions) Years ending December 31, 2023 2024 2025 2026 2027 2028-2032 NON-QUALIFIED PENSION PLANS Duke Energy Duke Energy Carolinas Progress Energy Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana Piedmont $ 661 $ 186 $ 183 $ 635 629 607 592 2,581 176 174 164 156 628 180 183 180 177 804 99 95 97 91 89 372 $ 83 $ 32 $ 45 $ 19 84 85 87 87 427 31 31 30 29 135 45 44 44 43 205 18 16 16 15 71 The accumulated benefit obligation, which equals the projected benefit obligation for non-qualified pension plans, was $232 million for Duke Energy, $10 million for Duke Energy Carolinas, $78 million for Progress Energy, $24 million for Duke Energy Progress, $32 million for Duke Energy Florida, $3 million for Duke Energy Ohio, $2 million for Duke Energy Indiana and $3 million for Piedmont as of December 31, 2022. Employer contributions, which equal benefits paid for non-qualified pension plans, were $24 million for Duke Energy, $1 million for Duke Energy Carolinas, $10 million for Progress Energy, $3 million for Duke Energy Progress and $4 million for Duke Energy Florida for the year ended December 31, 2022. Employer contributions were not material for Duke Energy Ohio, Duke Energy Indiana or Piedmont for the year ended December 31, 2022. Net periodic pension costs for non-qualified pension plans were not material for the years ended December 31, 2022, 2021 or 2020. OTHER POST-RETIREMENT BENEFIT PLANS Duke Energy provides, and the Subsidiary Registrants participate in, some health care and life insurance benefits for retired employees on a contributory and non-contributory basis. Employees are eligible for these benefits if they have met age and service requirements at retirement, as defined in the plans. The health care benefits include medical, dental, vision and prescription drug coverage and are subject to certain limitations, such as deductibles and copayments. Duke Energy did not make any pre-funding contributions to its other post-retirement benefit plans during the years ended December 31, 2022, 2021 or 2020. Components of Net Periodic Other Post-Retirement Benefit Costs (in millions) Service cost Interest cost on accumulated post-retirement benefit obligation Expected return on plan assets Amortization of actuarial loss Amortization of prior service credit Net periodic post-retirement benefit costs(a)(b) (in millions) Service cost Interest cost on accumulated post-retirement benefit obligation Expected return on plan assets Amortization of actuarial loss Amortization of prior service credit Net periodic post-retirement benefit costs(a)(b) Duke Energy $ 3 17 (10) 2 (8) 4 $ Duke Energy $ 4 18 (11) 2 (13) $ — Year Ended December 31, 2022 Duke Energy Carolinas Progress Energy $ 1 $ — Duke Energy Progress $ — 4 (6) — (3) (4) $ 7 — 1 (2) 6 $ 4 — 1 (1) 4 $ Duke Energy Florida $ — 3 — 1 (1) 3 $ Year Ended December 31, 2021 Duke Energy Carolinas Progress Energy $ 1 $ 1 Duke Energy Progress $ — 4 (7) — (4) (6) $ 7 — 1 (2) 7 $ 192 4 — — (1) 3 $ Duke Energy Florida $ — 3 — 1 (1) 3 $ Duke Energy Ohio $ — 1 — — — 1 $ Duke Energy Ohio $ — 1 — — (1) $ — Duke Energy Indiana $ — 1 — — — 1 $ Duke Energy Indiana $ 1 1 — 4 (1) 5 $ Piedmont $ — 1 (2) — (2) $ (3) Piedmont $ — 1 (2) — (2) $ (3) PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued)(in millions) Service cost Interest cost on accumulated post-retirement benefit obligation Expected return on plan assets Amortization of actuarial loss Amortization of prior service credit Net periodic post-retirement benefit costs(a)(b) Year Ended December 31, 2020 Duke Energy $ 4 23 (13) 2 (14) 2 $ Duke Energy Carolinas Progress Energy $ 1 $ 1 Duke Energy Progress $ — 5 (8) — (4) (6) $ 10 — 1 (3) 9 $ 5 — — (1) 4 $ Duke Energy Florida $ — 4 — 1 (2) 3 $ Duke Energy Ohio $ — 1 — — (1) $ — Duke Energy Indiana $ 1 2 — 4 (1) 6 $ Piedmont $ — 1 (2) — (2) $ (3) (a) Duke Energy amounts exclude $4 million, $5 million and $6 million for the years ended December 2022, 2021 and 2020, respectively, of regulatory asset amortization resulting from purchase accounting adjustments associated with Duke Energy’s merger with Cinergy in April 2006. (b) Duke Energy Ohio amounts exclude $1 million, $1 million and $1 million for the years ended December 2022, 2021 and 2020, respectively, of regulatory asset amortization resulting from purchase accounting adjustments associated with Duke Energy’s merger with Cinergy in April 2006. Amounts Recognized in Accumulated Other Comprehensive Income and Regulatory Assets and Liabilities (in millions) Regulatory assets, net (decrease) increase Regulatory liabilities, net increase (decrease) Accumulated other comprehensive (income) loss Amortization of prior year actuarial gain Net amount recognized in accumulated other comprehensive income (in millions) Regulatory assets, net (decrease) increase Regulatory liabilities, net increase Accumulated other comprehensive (income) loss Amortization of prior year actuarial gain Net amount recognized in accumulated other comprehensive income Duke Energy Carolinas $ — $ — $ — Year Ended December 31, 2022 Duke Energy Progress $ (45) $ — Duke Energy Florida $ (36) $ — Progress Energy $ (80) $ — Duke Energy Ohio $ — $ — Duke Energy Indiana $ $ (3) 19 Piedmont $ — (5) $ $ — $ — $ — $ — $ — $ — $ — $ — $ — $ — $ — $ — $ — Duke Energy Carolinas $ — $ 12 $ — Year Ended December 31, 2021 Duke Energy Progress $ (9) $ — Duke Energy Florida $ (9) $ — Progress Energy $ (18) $ — Duke Energy Ohio $ $ 4 4 Duke Energy Indiana $ $ (4) 1 Piedmont $ — 2 $ $ — $ — $ — $ — $ — $ — $ — $ — $ — $ — $ — $ — $ — Duke Energy $ (79) 27 $ $ $ 1 1 Duke Energy $ (15) 23 $ $ $ (1) (1) 193 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued)Reconciliation of Funded Status to Accrued Other Post-Retirement Benefit Costs (in millions) Change in Projected Benefit Obligation Accumulated post-retirement benefit obligation at prior measurement date Service cost Interest cost Plan participants’ contributions Actuarial gains Plan amendments Benefits paid Accumulated post-retirement benefit obligation at measurement date Change in Fair Value of Plan Assets Plan assets at prior measurement date Actual return on plan assets Benefits paid Employer contributions Plan participants’ contributions Plan assets at measurement date Funded status of plan (in millions) Change in Projected Benefit Obligation Accumulated post-retirement benefit obligation at prior measurement date Service cost Interest cost Plan participants' contributions Actuarial gains Benefits paid Accumulated post-retirement benefit obligation at measurement date Change in Fair Value of Plan Assets Plan assets at prior measurement date Actual return on plan assets Benefits paid Employer contributions Plan participants’ contributions Plan assets at measurement date Funded status of plan Year Ended December 31, 2022 Duke Energy Duke Energy Carolinas Progress Energy Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana Piedmont $ 625 3 17 11 (80) (71) (68) $ 149 1 4 2 (17) (11) (16) $ 263 — 7 4 (43) (37) (26) $ 437 $ 112 $ 168 $ 211 (31) (68) 39 11 $ 162 $ (275) $ 135 (19) (16) 3 2 $ 105 (7) $ $ (1) — (26) 23 4 $ — $ (168) $ 147 — 4 2 (27) (18) (13) $ $ $ $ 95 (2) — (13) 11 2 (2) (97) $ $ $ $ $ 112 — 3 2 (16) (19) (13) 69 (2) — (13) 11 2 (2) (71) $ 25 — 1 1 (3) — (4) $ 54 — 1 1 (1) (17) (8) $ 27 — 1 — (5) — (2) $ 20 $ 30 $ 21 $ 9 (2) (4) 3 1 $ 7 $ (13) $ 6 — (8) 4 1 $ 3 $ (27) $ 39 (7) (2) 1 — $ 31 $ 10 Year Ended December 31, 2021 Duke Energy Duke Energy Carolinas Progress Energy Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana Piedmont $ $ $ 709 4 18 14 (47) (73) 625 237 15 (73) 18 14 $ 211 $ (414) $ $ $ $ $ 174 1 4 3 (14) (19) 149 139 9 (19) 3 3 135 (14) $ $ $ $ $ 299 1 7 5 (20) (29) 263 (1) — (29) 24 5 (1) (264) $ $ $ $ $ 166 — 4 3 (10) (16) 147 (2) — (16) 13 3 (2) (149) $ $ $ $ $ 130 — 3 2 (10) (13) 112 (1) — (13) 10 2 (2) (114) $ $ $ $ $ 27 — 1 1 (1) (3) 25 9 1 (3) 1 1 9 (16) $ $ $ $ $ 61 1 1 2 (2) (9) 54 7 — (9) 6 2 6 (48) $ $ $ $ $ 30 — 1 — (2) (2) 27 37 3 (2) 1 — 39 12 194 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued)Amounts Recognized in the Consolidated Balance Sheets (in millions) Prefunded post-retirement benefit Current post-retirement liability(a) Noncurrent post-retirement liability(b) Net liability (asset) recognized Regulatory assets Regulatory liabilities Accumulated other comprehensive (income) loss Deferred income tax expense Prior service credit Net actuarial gain Net amounts recognized in accumulated other comprehensive income (in millions) Prefunded post-retirement benefit Current post-retirement liability(a) Noncurrent post-retirement liability(b) Net liability (asset) recognized Regulatory assets Regulatory liabilities Accumulated other comprehensive (income) loss Deferred income tax expense Prior service credit Net actuarial gain Net amounts recognized in accumulated other comprehensive income December 31, 2022 Duke Energy $ — 9 266 275 50 189 $ $ $ $ 3 (1) (13) Duke Energy Carolinas Progress Energy Duke Energy Progress $ — — 7 $ 7 $ — 44 $ $ — — — $ — 5 163 $ 168 $ 46 $ — $ — — — $ — 3 94 97 $ $ 34 $ — $ — — — Duke Energy Florida $ — 2 69 71 $ $ 11 $ — $ — — — Duke Energy Ohio $ $ $ $ 1 2 12 13 4 21 $ — — — Duke Energy Indiana $ — — 27 27 25 82 $ $ $ $ — — — Piedmont $ 10 — — $ (10) $ — $ — $ — — — $ (11) $ — $ — $ — $ — $ — $ — $ — December 31, 2021 Duke Energy Duke Energy Carolinas Progress Energy Duke Energy Progress $ $ $ $ $ 12 9 417 414 129 162 3 (1) (14) $ — — 14 $ 14 $ — 44 $ $ — — — $ — 5 259 $ 264 $ 126 $ — $ — — — $ — 3 146 $ 149 79 $ $ — $ — — — Duke Energy Florida $ — 2 112 $ 114 47 $ $ — $ — — — Duke Energy Ohio $ $ $ $ 1 1 16 16 4 21 $ — — — Duke Energy Indiana $ — — 48 48 28 63 $ $ $ $ — — — Piedmont $ 12 — — $ (12) $ — 5 $ $ — — — $ (12) $ — $ — $ — $ — $ — $ — $ — (a) (b) Included in Other within Current Liabilities on the Consolidated Balance Sheets. Included in Accrued pension and other post-retirement benefit costs on the Consolidated Balance Sheets. Assumptions Used for Other Post-Retirement Benefits Accounting The discount rate used to determine the current year other post-retirement benefits obligation and following year’s other post-retirement benefits expense is based on a bond selection-settlement portfolio approach. This approach develops a discount rate by selecting a portfolio of high-quality corporate bonds that generate sufficient cash flow to provide for projected benefit payments of the plan. The selected bond portfolio is derived from a universe of non-callable corporate bonds rated Aa quality or higher. After the bond portfolio is selected, a single interest rate is determined that equates the present value of the plan’s projected benefit payments discounted at this rate with the market value of the bonds selected. The average remaining service period of active covered employees is seven years for Duke Energy and Duke Energy Florida, six years for Duke Energy Carolinas, Duke Energy Ohio, Duke Energy Indiana and Piedmont and five years for Progress Energy and Duke Energy Progress. The following tables present the assumptions used for other post-retirement benefits accounting. Benefit Obligations Discount rate Net Periodic Benefit Cost Discount rate Expected long-term rate of return on plan assets 195 December 31, 2022 2021 2020 5.60 % 2.90% 2.60% 2.90 % 6.50 % 2.60% 6.50% 3.30% 6.85% PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued)Assumed Health Care Cost Trend Rate Health care cost trend rate assumed for next year Rate to which the cost trend is assumed to decline (the ultimate trend rate) Year that rate reaches ultimate trend December 31, 2022 6.50% 4.75% 2030-2032 2021 6.25% 4.75% 2028 Expected Benefit Payments (in millions) Years ending December 31, 2023 2024 2025 2026 2027 2028-2032 PLAN ASSETS Description and Allocations Duke Energy Duke Energy Carolinas Progress Energy Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana Piedmont $ 68 $ 16 $ 25 49 45 41 38 158 13 12 11 10 41 18 16 15 14 61 $ 14 10 9 9 8 36 $ 11 $ 3 $ 7 $ 2 7 7 6 6 25 3 2 2 2 8 4 3 3 3 9 2 2 2 2 9 Duke Energy Corporation Master Retirement Trust Assets for both the qualified pension and other post-retirement benefits are maintained in the Duke Energy Corporation Master Retirement Trust. Approximately 98% of the Duke Energy Corporation Master Retirement Trust assets were allocated to qualified pension plans and approximately 2% were allocated to other post-retirement plans (comprised of 401(h) accounts), as of December 31, 2022, and 2021. The investment objective of the Duke Energy Corporation Master Retirement Trust is to invest in a diverse portfolio of assets that is expected to generate positive surplus return over time (i.e., asset growth greater than liability growth) subject to a prudent level of portfolio risk, for the purpose of enhancing the security of benefits for plan participants. As of December 31, 2022, Duke Energy assumes qualified pension and other post-retirement plan assets will generate a long-term rate of return of 8.25% for the RCBP pension and RCBP 401(h) account assets and 6.5% for the DELPP pension and DELPP 401(h) account assets. The expected long-term rate of return was developed using a weighted average calculation of expected returns based primarily on future expected returns across asset classes considering the use of active asset managers, where applicable. The asset allocation targets were set after considering the investment objective and the risk profile. Equity securities are held for their higher expected returns. Debt securities are primarily held to hedge the qualified pension plan. Return seeking debt securities, hedge funds and other global securities are held for diversification. Investments within asset classes are diversified to achieve broad market participation and reduce the impact of individual managers or investments. Effective January 1, 2023, the target asset allocation for the RCBP assets is 35% liability hedging and 65% return-seeking assets and the target asset allocation for the DELPP assets is 80% liability hedging assets and 20% return-seeking assets. Duke Energy periodically reviews its asset allocation targets, and over time, as the funded status of the benefit plans increase, the level of asset risk relative to plan liabilities may be reduced to better manage Duke Energy’s benefit plan liabilities and reduce funded status volatility. The Duke Energy Corporation Master Retirement Trust is authorized to engage in the lending of certain plan assets. Securities lending is an investment management enhancement that utilizes certain existing securities of the Duke Energy Corporation Master Retirement Trust to earn additional income. Securities lending involves the loaning of securities to approved parties. In return for the loaned securities, the Duke Energy Corporation Master Retirement Trust receives collateral in the form of cash and securities as a safeguard against possible default of any borrower on the return of the loan under terms that permit the Duke Energy Corporation Master Retirement Trust to sell the securities. The Duke Energy Corporation Master Retirement Trust mitigates credit risk associated with securities lending arrangements by monitoring the fair value of the securities loaned, with additional collateral obtained or refunded as necessary. The fair value of securities on loan was approximately $390 million and $542 million at December 31, 2022, and 2021, respectively. Cash and securities obtained as collateral exceeded the fair value of the securities loaned at December 31, 2022, and 2021, respectively. Securities lending income earned by the Duke Energy Corporation Master Retirement Trust was immaterial for the years ended December 31, 2022, 2021 and 2020, respectively. Qualified pension and other post-retirement benefits for the Subsidiary Registrants are derived from the Duke Energy Corporation Master Retirement Trust, as such, each are allocated their proportionate share of the assets discussed below. 196 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued)The following table includes the target asset allocations by asset class at December 31, 2022, and the actual asset allocations for the RCBP assets. Global equity securities Global private equity securities Debt securities Return seeking debt securities Hedge funds Real estate and cash Total Target Allocation 45% 2% 35% 7% 4% 7% 100% Actual Allocation at December 31, 2022 49% 2% 30% 7% 6% 6% 100% 2021 24% 1% 62% 4% 3% 6% 100% The following table includes the target asset allocations by asset class at December 31, 2022, and the actual asset allocations for the DELPP assets. Global equity securities Global private equity securities Debt securities Return seeking debt securities Hedge funds Real estate and cash Total Other post-retirement assets Target Allocation 14% 1% 80% 2% 1% 2% 100% Actual Allocation at December 31, 2022 14% —% 80% 2% 2% 2% 100% 2021 24% 1% 62% 4% 3% 6% 100% Duke Energy’s other post-retirement assets are comprised of Voluntary Employees’ Beneficiary Association (VEBA) trusts and 401(h) accounts held within the Duke Energy Corporation Master Retirement Trust. Duke Energy’s investment objective is to achieve sufficient returns, subject to a prudent level of portfolio risk, for the purpose of promoting the security of plan benefits for participants. The following table presents target and actual asset allocations for the VEBA trusts at December 31, 2022. U.S. equity securities Non-U.S. equity securities Real estate Debt securities Cash Total Target Allocation 30% 5% 1% 45% 19% 100% Actual Allocation at December 31, 2022 12% 5% 3% 11% 69% 100% 2021 19% 5% 3% 18% 55% 100% Fair Value Measurements Investments in corporate debt securities and U.S. government securities Duke Energy classifies recurring and non-recurring fair value measurements based on the fair value hierarchy as discussed in Note 17. Valuation methods of the primary fair value measurements disclosed below are as follows: Investments in equity securities Investments in equity securities are typically valued at the closing price in the principal active market as of the last business day of the reporting period. Principal active markets for equity prices include published exchanges such as NASDAQ and NYSE. Foreign equity prices are translated from their trading currency using the currency exchange rate in effect at the close of the principal active market. Prices have not been adjusted to reflect after-hours market activity. The majority of investments in equity securities are valued using Level 1 measurements. When the price of an institutional commingled fund is unpublished, it is not categorized in the fair value hierarchy, even though the funds are readily available at the fair value. 197 Most debt investments are valued based on a calculation using 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. Most debt valuations are Level 2 measurements. If the market for a particular fixed-income security is relatively inactive or illiquid, the measurement is Level 3. U.S. Treasury debt is typically Level 2. Investments in short-term investment funds Investments in short-term investment funds are valued at the net asset value of units held at year end and are readily redeemable at the measurement date. Investments in short-term investment funds with published prices are valued as Level 1. Investments in short-term investment funds with unpublished prices are valued as Level 2. PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued)Duke Energy Corporation Master Retirement Trust The following tables provide the fair value measurement amounts for the Duke Energy Corporation Master Retirement Trust qualified pension and other post-retirement assets. December 31, 2022 (in millions) Equity securities Corporate debt securities Short-term investment funds Partnership interests Hedge funds U.S. government securities Governments bonds – foreign Cash Government and commercial mortgage backed securities Net pending transactions and other investments Total assets(a) Level 2 Level 3 Not Categorized(b) Total Fair Value $ 2,234 2,944 193 62 209 1,254 112 45 6 14 Level 1 $ 2,014 — 1 — — — — 45 — 5 $ 194 2,944 192 — — 1,254 112 — 6 9 $ 7,073 $ 2,065 $4,711 $ — — — 62 — — — — — — $ 62 $ 26 — — — 209 — — — — — $ 235 (a) Duke Energy Carolinas, Progress Energy, Duke Energy Progress, Duke Energy Florida, Duke Energy Ohio, Duke Energy Indiana and Piedmont were allocated approximately 27%, 33%, 15%, 18%, 5%, 7% and 3%, respectively, of the Duke Energy Corporation Master Retirement Trust at December 31, 2022. Accordingly, all amounts included in the table above are allocable to the Subsidiary Registrants using these percentages. (b) Certain investments that are measured at fair value using the net asset value per share practical expedient have not been categorized in the fair value hierarchy. (in millions) Equity securities Corporate debt securities Short-term investment funds Partnership interests Hedge funds U.S. government securities Governments bonds – foreign Cash Government and commercial mortgage backed securities Net pending transactions and other investments Total assets(a) December 31, 2021 Total Fair Value Level 1 $2,575 4,189 382 95 216 1,618 78 144 2 53 $ 2,547 — 272 — — — — 144 — 12 Level 2 $ — 4,189 110 — — 1,618 78 — 2 41 $9,352 $ 2,975 $ 6,038 Not Categorized(b) Level 3 $ — — — 95 — — — — — — $ 95 $ 28 — — — 216 — — — — — $ 244 (a) Duke Energy Carolinas, Progress Energy, Duke Energy Progress, Duke Energy Florida, Duke Energy Ohio, Duke Energy Indiana and Piedmont were allocated approximately 26%, 32%, 15%, 17%, 5%, 7% and 4%, respectively, of the Duke Energy Corporation Master Retirement Trust at December 31, 2021. Accordingly, all amounts included in the table above are allocable to the Subsidiary Registrants using these percentages. (b) Certain investments that are measured at fair value using the net asset value per share practical expedient have not been categorized in the fair value hierarchy. The following table provides a reconciliation of beginning and ending balances of Duke Energy Corporation Master Retirement Trust qualified pension and other post-retirement assets at fair value on a recurring basis where the determination of fair value includes significant unobservable inputs (Level 3). (in millions) Balance at January 1 Sales Total gains and other, net Transfer of Level 3 assets from other classifications Balance at December 31 2022 $ 95 (18) (8) (7) $ 62 2021 $ — — — 95 $ 95 198 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued)Other post-retirement assets The following tables provide the fair value measurement amounts for VEBA trust assets. (in millions) Cash and cash equivalents Real estate Equity securities Debt securities Total assets (in millions) Cash and cash equivalents Real estate Equity securities Debt securities Total assets EMPLOYEE SAVINGS PLANS Retirement Savings Plan Duke Energy Corporation sponsors, and the Subsidiary Registrants participate in, employee savings plans that cover substantially all U.S. employees. Most employees participate in a matching contribution formula where Duke Energy provides a matching contribution generally equal to 100% of employee before-tax and Roth 401(k) contributions of up to 6% of eligible pay per pay period. Dividends on Duke Energy shares held by the savings plans are charged to retained earnings when declared and shares December 31, 2022 Total Fair Value $11 2 12 8 Level 2 $ 11 2 12 8 $33 $ 33 December 31, 2021 Total Fair Value $14 2 18 11 Level 2 $14 2 18 11 $45 $45 held in the plans are considered outstanding in the calculation of basic and diluted EPS. For new and rehired employees who are not eligible to participate in Duke Energy’s defined benefit plans, an additional employer contribution of 4% of eligible pay per pay period, which is subject to a three-year vesting schedule, is provided to the employee’s savings plan account. Certain Piedmont employees whose participation in a prior Piedmont defined benefit plan (that was frozen as of December 31, 2017) are eligible for employer transition credit contributions of 3% to 5% of eligible pay per period, for each pay period during the three-year period ending December 31, 2020. The following table includes pretax employer matching contributions made by Duke Energy and expensed by the Subsidiary Registrants. Duke Energy Duke Energy Carolinas Progress Energy Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana $246 229 213 $76 70 67 $65 60 57 $43 39 38 $22 21 19 $6 5 5 $12 12 11 Piedmont $13 11 13 (in millions) Years ended December 31, 2022 2021 2020 24. INCOME TAXES Inflation Reduction Act On August 16, 2022, the IRA was signed into law. Among other provisions, the IRA implemented a new 15% corporate alternative minimum tax based on GAAP net income, with certain adjustments as defined by the IRA, and clean energy-related provisions. The IRA’s clean energy provisions include, among other provisions, the extension and modification of existing investment and PTCs for projects placed in service through 2024 and introduces new technology-neutral clean energy related credits beginning in 2025. In addition, the IRA created a new, zero-emission nuclear power PTC and a clean hydrogen PTC. Duke Energy has preliminarily reviewed the provisions of the IRA and has determined there were no material impacts on the results of operations, financial position, or cash flows in the periods presented for the Duke Energy Registrants as a result of the IRA being signed into law. Based on the preliminary review of the IRA provisions, future annual cash flow impacts related to the energy credits could be material to the Duke Energy Registrants. However, the majority of Duke Energy’s operations are regulated and the FERC and state utility commissions will determine the regulatory treatment. We anticipate the Subsidiary Registrants will 199 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued)defer and expect to pass along the net financial impact associated with the IRA to customers over time. See Note 4 for further details on the IRA as it relates to Duke Energy Florida. Duke Energy will continue to assess the IRA as new information and anticipated guidance from the U.S. Department of the Treasury becomes available. North Carolina’s 2021 Appropriations Act On November 18, 2021, North Carolina Senate Bill 105 (SB 105) was signed into law. Starting with tax year 2025, SB 105 begins phasing out the North Carolina corporate income tax rate over five years, from a statutory rate of 2.5% to zero. Duke Energy recorded a net reduction of approximately $490 million to its North Carolina deferred tax liability in the fourth quarter of 2021. The majority of this deferred tax liability reduction was offset by recording a regulatory liability pending NCUC determination of the disposition of the amounts related to Duke Energy Carolinas, Duke Energy Progress and Piedmont. In addition, Duke Energy recorded a net reduction of North Carolina consolidating deferred tax assets of approximately $25 million to deferred state income tax expense in the fourth quarter of 2021. North Carolina SB 105 did not have a significant impact on the financial position, results of operation, or cash flows of Duke Energy, Duke Energy Carolinas, Progress Energy, Duke Energy Progress or Piedmont. Consolidated Appropriations Act On December 27, 2020, the Consolidated Appropriations Act (CAA) was signed into law. In addition to the CAA providing funding for government Income Tax Expense Components of Income Tax Expense operations, it also provided tax provisions to assist with COVID-19 relief, including extending certain expiring tax provisions. The company has reviewed the provisions of the CAA and has determined that there are no material impacts on the financial statements as a result of the CAA being signed into law. CARES Act On March 27, 2020, the CARES Act was enacted. The CARES Act was an emergency economic stimulus package in response to the COVID-19 pandemic. Among other provisions, the CARES Act accelerated the remaining AMT credit refund allowances resulting in taxpayers being able to immediately claim a refund in full for any AMT credit carryforwards and provided for the deferral of certain 2020 payroll taxes. In the third quarter of 2020, Duke Energy received $572 million related to these AMT credit carryforwards and $19 million of interest income. In addition, the company deferred approximately $117 million of payroll taxes, of which, 50% were paid by December 31, 2021, with the remaining 50% payable by December 31, 2022. The other provisions within the CARES Act did not materially impact Duke Energy’s income tax accounting. Tax benefit from discontinued operations, in the following tables, includes income tax benefits related to the Commercial Renewables Disposal Groups. See Note 2 for further details. (in millions) Current income taxes Federal State Foreign Total current income taxes Deferred income taxes Federal State Total deferred income taxes(a) ITC amortization Income tax expense from continuing operations Tax benefit from discontinued operations Total income tax (benefit) expense included in Consolidated Statements of Operations Year Ended December 31, 2022 Duke Energy Duke Energy Carolinas Progress Energy Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana Piedmont $ 1 (8) 4 (3) 328 (14) 314 (11) 300 (503) $ $ (71) (13) — (84) 230 (16) 214 (4) 126 — (13) (3) — (16) 310 59 369 (5) 348 — $ 37 — — 37 118 7 125 (4) 158 — $ (37) (23) — (60) 201 84 285 — 225 — $ (2) 1 — (1) (22) 3 (19) (1) (21) — $ 38 2 — 40 (63) — (63) (1) (24) — $ 32 2 — 34 12 (7) 5 — 39 — $ (203) $ 126 $ 348 $ 158 $ 225 $ (21) $ (24) $ 39 (a) Total deferred income taxes includes the generation of NOL carryforwards and tax credit carryforwards of $550 million at Duke Energy, $97 million at Duke Energy Carolinas, $128 million at Progress Energy, $9 million at Duke Energy Progress, $111 million at Duke Energy Florida, $7 million at Duke Energy Ohio, $13 million at Duke Energy Indiana, and $12 million at Piedmont. 200 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued) (in millions) Current income taxes Federal State Foreign Total current income taxes Deferred income taxes Federal State Total deferred income taxes(a) ITC amortization Income tax expense from continuing operations Tax benefit from discontinued operations Total income tax expense included in Consolidated Statements of Operations Year Ended December 31, 2021 Duke Energy Duke Energy Carolinas Progress Energy Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana Piedmont $ (2) 1 2 1 275 — 275 (8) 268 (76) $ $ 241 23 — 264 (130) (79) (209) (4) 51 — (15) (4) — (19) 203 47 250 (4) 227 — $ 113 8 — 121 (16) (26) (42) (4) 75 — $ (75) (17) — (92) 202 77 279 — 187 — $ (8) (2) — (10) 35 5 40 — 30 — $ 65 7 — 72 19 16 35 — 107 — $ 23 3 — 26 17 (13) 4 — 30 — $ 192 $ 51 $ 227 $ 75 $ 187 $ 30 $ 107 $ 30 (a) Total deferred income taxes includes the generation of NOL carryforwards and tax credit carryforwards of $32 million at Duke Energy Carolinas, $8 million at Duke Energy Indiana, and $3 million at Piedmont. In addition, total deferred income taxes includes utilization of NOL carryforwards and tax credit carryforwards of $250 million at Duke Energy, $95 million at Progress Energy, $14 million at Duke Energy Progress, $64 million at Duke Energy Florida, and $2 million at Duke Energy Ohio. (in millions) Current income taxes Federal State Foreign Total current income taxes Deferred income taxes Federal State Total deferred income taxes(a) ITC amortization Income tax (benefit) expense from continuing operations Tax benefit from discontinued operations Total income tax (benefit) expense included in Consolidated Statements of Operations Year Ended December 31, 2020 Duke Energy Duke Energy Carolinas Progress Energy Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana Piedmont $ (281) (3) 1 (283) 222 (98) 124 (10) (169) (65) $ 314 35 — 349 (171) (86) (257) (4) 88 — $ 280 29 — 309 (167) (24) (191) (5) 113 — $ 181 17 — 198 $ 148 24 — 172 (180) (49) (229) (5) (36) — 1 25 26 — 198 — $ 10 1 — 11 30 2 32 — 43 — $ 48 7 — 55 12 17 29 — 84 — $ (27) (8) — (35) 60 (7) 53 — 18 — $ (234) $ 88 $ 113 $ (36) $ 198 $ 43 $ 84 $ 18 (a) Total deferred income taxes includes the generation of NOL carryforwards and tax credit carryforwards of $20 million at Duke Energy Carolinas, $3 million at Duke Energy Progress, $8 million at Duke Energy Indiana, and $11 million at Piedmont. In addition, total deferred income taxes includes utilization of NOL carryforwards and tax credit carryforwards of $39 million at Progress Energy, $30 million at Duke Energy Florida and $189 million at Duke Energy. Duke Energy Income from Continuing Operations before Income Taxes (in millions) Domestic Foreign Income from continuing operations before income taxes Years Ended December 31, 2022 $ 3,991 87 $ 4,078 2021 $ 3,947 44 $ 3,991 2020 $ 907 13 $ 920 201 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued) Statutory Rate Reconciliation The following tables present a reconciliation of income tax expense at the U.S. federal statutory tax rate to the actual tax expense from continuing operations. (in millions) Income tax expense, computed at the statutory rate of 21% State income tax, net of federal income tax effect Amortization of excess deferred income tax AFUDC equity income AFUDC equity depreciation Other tax credits Other items, net Income tax expense from continuing operations Year Ended December 31, 2022 Duke Energy Duke Energy Carolinas $ $ 856 (17) (481) (41) 36 (43) (10) 300 $ $ 362 (23) (195) (20) 18 (12) (4) 126 Progress Energy $ 457 44 (133) (14) 12 (16) (2) $ 348 Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana $ 245 6 (74) (11) 6 (9) (5) $ 158 $ 238 48 (59) (3) 6 (7) 2 $ 225 $ 59 3 (79) (1) 1 (2) (2) $ (21) $ 24 2 (48) (2) 4 (3) (1) $ (24) Piedmont $ $ 76 (4) (23) (2) — (8) — 39 Effective tax rate 7.4% 7.3% 16.0% 13.6% 19.8% (7.5)% (21.2)% 10.8% (in millions) Income tax expense, computed at the statutory rate of 21% State income tax, net of federal income tax effect Amortization of excess deferred income tax AFUDC equity income AFUDC equity depreciation Other tax credits Valuation allowance(a) Other items, net Income tax expense from continuing operations Duke Energy Duke Energy Carolinas $ $ 838 1 (438) (34) 35 (30) (85) (19) 268 $ $ 291 (44) (184) (14) 18 (12) — (4) 51 Year Ended December 31, 2021 Progress Energy $ 384 34 (174) (11) 10 (11) — (5) $ 227 Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana $ 224 (14) (120) (7) 5 (8) — (5) 75 $ $ 194 47 (54) (3) 5 (3) — 1 $ 187 $ $ 49 2 (22) (2) 2 (1) — 2 30 $ 123 18 (34) (4) 5 (2) — 1 $ 107 Piedmont $ $ 71 (8) (25) (4) — (4) — — 30 Effective tax rate 6.7% 3.7% 12.4% 7.0% 20.2% 12.8% 18.2% 8.8% (a) In the fourth quarter of 2021, the company recognized a federal capital gain in the amount of $426 million. As a result, a valuation allowance of $85 million related to a federal capital loss carryforward was released. This valuation allowance was originally recorded as a result of the 2019 sale of minority interest of certain renewable assets within the Commercial Renewables Disposal Groups. (in millions) Income tax expense, computed at the statutory rate of 21% State income tax, net of federal income tax effect Amortization of excess deferred income tax AFUDC equity income AFUDC equity depreciation Other tax credits Tax true up Other items, net Income tax (benefit) expense from continuing operations Year Ended December 31, 2020 Duke Energy Carolinas Progress Energy Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana Piedmont $ 219 (40) (82) (13) 19 (13) (3) 1 $ 88 $ 243 4 (118) (9) 10 (16) 1 (2) $ 113 $ 80 (25) (68) (6) 5 (14) (5) (3) $ (36) $ 204 39 (49) (3) 5 (2) 5 (1) $ 198 $ 62 2 (20) (2) 1 (1) — 1 $ 43 $ 103 19 (36) (4) 4 (3) (1) 2 $ 84 $ 61 (12) (21) (10) — (2) 1 1 $ 18 Duke Energy $ 193 (80) (276) (48) 103 (37) (12) (12) $ (169) Effective tax rate (18.4)% 8.4% 9.7% (9.5)% 20.4% 14.6% 17.1% 6.2% Valuation allowances have been established for certain state NOL carryforwards and state income tax credits that reduce deferred tax assets to an amount that will be realized on a more-likely-than-not basis. The net change in the total valuation allowance is included in state income tax, net of federal income tax effect, in the above tables. 202 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued)DEFERRED TAXES Net Deferred Income Tax Liability Components The following tables include deferred income tax assets and liabilities related to the Commercial Renewables Disposal Groups. See Note 2 for further details. (in millions) Deferred credits and other liabilities Lease obligations Pension, post-retirement and other employee benefits Progress Energy merger purchase accounting adjustments(a) Tax credits and NOL carryforwards Regulatory liabilities and deferred credits Investments and other assets Other Valuation allowance Total deferred income tax assets Investments and other assets Accelerated depreciation rates Regulatory assets and deferred debits, net Total deferred income tax liabilities Duke Energy Duke Energy Carolinas Progress Energy December 31, 2022 Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana Piedmont $ 348 405 192 301 4,426 — — 106 (519) 5,259 (1,671) (11,478) (2,074) (15,223) $ 170 89 (1) — 444 — — 18 — 720 (983) (3,410) (480) (4,873) $ 117 263 12 — 618 — — 22 — 1,032 (521) (4,358) (1,300) (6,179) $ 33 197 18 — 167 — — 12 — 427 $ 83 65 (10) — 412 — — 10 — 560 $ 12 4 9 — 20 3 3 5 — 56 $ 23 15 10 — 208 61 — 2 — 319 (432) (1,844) (628) (2,904) (102) (2,576) (671) (3,349) — (1,192) — (1,192) (12) (1,606) — (1,618) $ 24 3 (2) — 37 — — 9 — 71 (28) (892) (21) (941) Net deferred income tax liabilities $ (9,964) $(4,153) $(5,147) $(2,477) $(2,789) $ (1,136) $(1,299) $ (870) (a) Primarily related to lease obligations and debt fair value adjustments. The following table presents the expiration of tax credits and NOL carryforwards. (in millions) General Business Credits Federal NOL carryforwards(a) (e) Charitable contribution carryforwards State carryforwards and credits(b) (e) Foreign NOL carryforwards(c) Foreign Tax Credits(d) Total tax credits and NOL carryforwards December 31, 2022 Amount $ 2,473 306 18 394 12 1,223 $ 4,426 Expiration Year 2027 — 2042 2024 — Indefinite 2024 — 2027 2023 — Indefinite 2027 — 2037 2024 — 2028 (a) A valuation allowance of $4 million has been recorded on the Federal NOL carryforwards, as presented in the Net Deferred Income Tax Liability Components table. (b) A valuation allowance of $109 million has been recorded on the state NOL and attribute carryforwards, as presented in the Net Deferred Income Tax Liability Components table. (c) A valuation allowance of $12 million has been recorded on the foreign NOL carryforwards, as presented in the Net Deferred Income Tax Liability Components table. (d) A valuation allowance of $391 million has been recorded on the foreign tax credits, as presented in the Net Deferred Income Tax Liability Components table. (e) Indefinite carryforward for Federal NOLs, and NOLs for states that have adopted the Tax Act’s NOL provisions, generated in tax years beginning after December 31, 2017. 203 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued) (in millions) Deferred credits and other liabilities Lease obligations Pension, post-retirement and other employee benefits Progress Energy merger purchase accounting adjustments(a) Tax credits and NOL carryforwards Regulatory liabilities and deferred credits Investments and other assets Other Valuation allowance Total deferred income tax assets Investments and other assets Accelerated depreciation rates Regulatory assets and deferred debits, net Total deferred income tax liabilities Net deferred income tax liabilities Duke Energy Duke Energy Carolinas Progress Energy December 31, 2021 Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana Piedmont $ 347 346 207 340 3,784 — — 85 (518) 4,591 (2,428) (10,391) (1,151) (13,970) $ 121 91 (36) — 349 11 — 12 — 548 $ 101 197 30 — 497 — — 12 — 837 $ 60 121 17 — 160 — — 7 — 365 $ 40 76 7 — 306 — — 4 — 433 $ 19 4 11 — 13 16 5 7 — 75 $ 7 16 20 — 195 — 6 2 — 246 (1,205) (2,977) — (4,182) (742) (3,891) (768) (5,401) (610) (1,546) (417) (2,573) (135) (2,382) (350) (2,867) — (1,125) — (1,125) — (1,496) (53) (1,549) $ 18 4 (8) — 29 6 — 8 — 57 (39) (833) — (872) $ (9,379) $ (3,634) $ (4,564) $(2,208) $ (2,434) $ (1,050) $ (1,303) $ (815) (a) Primarily related to lease obligations and debt fair value adjustments. UNRECOGNIZED TAX BENEFITS The following tables present changes to unrecognized tax benefits. (in millions) Unrecognized tax benefits – January 1 Gross decreases – tax positions in prior periods Gross increases – current period tax positions Total changes Unrecognized tax benefits – December 31 (in millions) Unrecognized tax benefits – January 1 Gross decreases – tax positions in prior periods(a) Gross increases – current period tax positions Total changes Unrecognized tax benefits – December 31 Year Ended December 31, 2022 Duke Energy Carolinas 13 $ — 4 4 Progress Energy 15 $ — 4 4 Duke Energy Progress 10 $ — 3 3 $ 17 $ 19 $ 13 Duke Energy Florida 4 $ — 1 1 $ 5 Year Ended December 31, 2021 Duke Energy Carolinas 10 $ — 3 3 Progress Energy 10 $ — 5 5 Duke Energy Progress 6 $ — 4 4 $ 13 $ 15 $ 10 Duke Energy Florida 3 $ — 1 1 $ 4 Duke Energy 51 $ — 14 14 $ 65 Duke Energy 125 $ (86) 12 (74) $ 51 $ Duke Energy Ohio 1 — — — $ 1 $ Duke Energy Ohio 1 — — — $ 1 Duke Energy Indiana 2 $ — — — $ 2 Duke Energy Indiana 1 $ — 1 1 $ 2 Piedmont 4 $ — 5 5 $ 9 Piedmont 1 $ — 3 3 $ 4 (a) In the fourth quarter of 2021, the company recognized a federal capital gain in the amount of $426 million. As a result of the capital gain, a previously recorded unrecognized tax benefit related to the character of a taxable loss has been reversed. See note (a) under the Statutory Rate Reconciliation table for more details. 204 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued) (in millions) Unrecognized tax benefits – January 1 Gross decreases – tax positions in prior periods Gross increases – current period tax positions Reduction due to lapse of statute of limitations Total changes Unrecognized tax benefits – December 31 Year Ended December 31, 2020 Duke Energy 126 $ (2) 4 (3) (1) $ 125 Duke Energy Carolinas 8 $ — 2 — 2 Progress Energy 9 $ — 1 — 1 Duke Energy Progress 6 $ — — — — $ 10 $ 10 $ 6 Duke Energy Florida 3 $ — — — — $ 3 $ Duke Energy Ohio 1 — — — — $ 1 Duke Energy Indiana 1 $ — — — — $ 1 Piedmont 4 $ — — (3) (3) $ 1 The following table includes additional information regarding the Duke Energy Registrants’ unrecognized tax benefits at December 31, 2022. None of Duke Energy Registrants anticipates a material increase or decrease in unrecognized tax benefits within the next 12 months. (in millions) Amount that if recognized, would affect the effective tax rate or regulatory liability(a) Duke Energy Duke Energy Carolinas Progress Energy December 31, 2022 Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana Piedmont $ 59 $ 17 $ 18 $ 13 $ 5 $ 1 $ 2 $ 8 (a) The Duke Energy Registrants are unable to estimate the specific amounts that would affect the ETR versus the regulatory liability. Duke Energy and its subsidiaries are no longer subject to federal, state, local or non-U.S. income tax examinations by tax authorities for years before 2016, aside from certain state tax attributes carried forward for utilization in future years. 25. OTHER INCOME AND EXPENSES, NET The components of Other income and expenses, net on the Consolidated Statements of Operations are as follows. (in millions) Interest income AFUDC equity Post in-service equity returns Nonoperating income, other Other income and expense, net (in millions) Interest income AFUDC equity Post in-service equity returns Nonoperating income, other Other income and expense, net Year Ended December 31, 2022 Duke Energy Duke Energy Carolinas Progress Energy Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana $ 27 197 34 134 $392 $ 2 98 14 107 $221 $ 24 68 18 71 $ 181 $ 4 52 18 40 $ 114 $ 20 16 — 38 $ 74 $ 11 7 1 — $ 19 $ 15 13 1 7 $ 36 Piedmont $ 19 11 — 16 $ 46 Year Ended December 31, 2021 Duke Energy Duke Energy Carolinas Progress Energy Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana Piedmont $ 13 171 39 413 $636 $ 4 65 21 180 $270 $ 8 51 16 140 $ 215 $ 6 34 16 87 $ 2 16 — 53 $ 4 7 1 6 $ 6 27 1 8 $ 143 $ 71 $ 18 $ 42 $ 19 20 — 16 $ 55 205 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued) Year Ended December 31, 2020 Duke Energy Duke Energy Carolinas Progress Energy Duke Energy Progress $ 4 62 17 94 $ 8 42 8 71 $ 2 29 8 36 $ 30 154 27 240 $451 Duke Energy Florida $ 6 12 — 35 Duke Energy Ohio $ 4 7 1 4 Duke Energy Indiana $ 6 23 1 7 Piedmont $ 17 19 — 15 $ 51 $ 177 $ 129 $ 75 $ 53 $ 16 $ 37 (in millions) Interest income AFUDC equity Post in-service equity returns Nonoperating income, other Other income and expense, net 26. SUBSEQUENT EVENTS For information on subsequent events related to dispositions, regulatory matters, commitments and contingencies, and debt and credit facilities see Notes 2, 4, 5 and 7, respectively. 27. QUARTERLY FINANCIAL DATA (UNAUDITED) DUKE ENERGY Quarterly EPS amounts may not sum to the full-year total due to changes in the weighted average number of common shares outstanding and rounding. (in millions, except per share data) 2022 Operating revenues Operating income Income from continuing operations (Loss) Income from discontinued operations, net of tax Net income (loss) Net income (loss) available to Duke Energy Corporation common stockholders Earnings per share: Income from continuing operations available to Duke Energy Corporation common stockholders Basic and diluted Income (Loss) from discontinued operations attributable to Duke Energy Corporation common stockholders Basic and diluted Net income (loss) available to Duke Energy Corporation common stockholders Basic and diluted 2021 Operating revenues Operating income Income from continuing operations Loss from discontinued operations, net of tax Net income Net income available to Duke Energy Corporation common stockholders Earnings per share: Income from continuing operations available to Duke Energy Corporation common stockholders Basic and diluted Income from discontinued operations attributable to Duke Energy Corporation common stockholders Basic and diluted Net income available to Duke Energy Corporation common stockholders First Quarter Second Quarter Third Quarter Fourth Quarter $ 7,011 1,314 835 (15) 820 818 $ 6,564 1,448 898 (18) 880 893 $ 7,842 2,056 1,410 3 1,413 1,383 $ 7,351 1,194 635 (1,293) (658) (650) Total $ 28,768 6,012 3,778 (1,323) 2,455 2,444 $ 1.06 $ 1.11 $ 1.78 $ 0.80 $ 4.74 $ 0.02 $ 0.03 $ 0.03 $ (1.66) $ (1.57) $ 1.08 $ 1.14 $ 1.81 $ (0.86) $ 3.17 $ 6,032 1,466 967 (26) 941 953 $ 5,638 1,198 723 (25) 698 751 $ 6,834 1,726 1,333 (57) 1,276 1,366 $ 6,117 1,110 700 (36) 664 732 $ 24,621 5,500 3,723 (144) 3,579 3,802 $ 1.22 $ 0.90 $ 1.69 $ 0.86 $ 4.68 $ 0.03 $ 0.06 $ 0.10 $ 0.07 $ $ 0.26 4.94 Basic and diluted $ 1.25 $ 0.96 $ 1.79 $ 0.93 206 PART IIDUKE 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.Combined Notes to Consolidated Financial Statements – (Continued) ITEM 9. CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND FINANCIAL DISCLOSURE None. ITEM 9A. CONTROLS AND PROCEDURES Disclosure Controls and Procedures Management’s Annual Report on Internal Control Over Financial Reporting 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 December 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 December 31, 2022, and have concluded no change has materially affected, or is reasonably likely to materially affect, internal controls over financial reporting. The Duke Energy Registrants’ management is responsible for establishing and maintaining an adequate system of internal control over financial reporting, as such term is defined in Exchange Act Rules 13a-15(f) and 15d-15(f). The Duke Energy Registrants’ internal control system was designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes, in accordance with GAAP. Due to inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness of the internal control over financial reporting to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with policies and procedures may deteriorate. The Duke Energy Registrants’ management, including their Chief Executive Officer and Chief Financial Officer, has conducted an evaluation of the effectiveness of their internal control over financial reporting as of December 31, 2022, based on the framework in the Internal Control – Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission. Based on that evaluation, management concluded that its internal controls over financial reporting were effective as of December 31, 2022. Deloitte & Touche LLP, Duke Energy’s independent registered public accounting firm, has issued an attestation report on the effectiveness of Duke Energy’s internal control over financial reporting, which is included herein. This report is not applicable to the Subsidiary Registrants as these companies are not accelerated or large accelerated filers. 207 PART IIREPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM To the shareholders and the Board of Directors of Duke Energy Corporation Opinion on Internal Control over Financial Reporting We have audited the internal control over financial reporting of Duke Energy Corporation and subsidiaries (the “Company”) as of December 31, 2022, based on criteria established in Internal Control — Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO). In our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of December 31, 2022, based on criteria established in Internal Control — Integrated Framework (2013) issued by COSO. We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the consolidated financial statements as of and for the year ended December 31, 2022, of the Company and our report dated February 27, 2023, expressed an unqualified opinion on those financial statements. Basis for Opinion The Company’s management is responsible for maintaining effective internal control over financial reporting and for its assessment of the effectiveness of internal control over financial reporting, included in the accompanying Management’s Annual Report on Internal Control Over Financial Reporting. Our responsibility is to express an opinion on the Company’s internal control over financial reporting based on our audit. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB. We conducted our audit in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects. Our audit included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, testing and evaluating the design and operating effectiveness of internal control based on the assessed risk, and performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion. Definition and Limitations of Internal Control over Financial Reporting A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements. Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate. /s/ Deloitte and Touche LLP Charlotte, North Carolina February 27, 2023 208 PART IIPART IIIITEM 10. DIRECTORS, EXECUTIVE OFFICERS AND CORPORATE GOVERNANCE Information regarding Duke Energy’s Executive Officers is set forth in Part I, Item 1, “Business – Information about Our Executive Officers,” in this Annual Report. Duke Energy will provide information that is responsive to the remainder of this Item 10 in its definitive proxy statement or in an amendment to this Annual Report not later than 120 days after the end of the fiscal year covered by this Annual Report. That information is incorporated in this Item 10 by reference. ITEM 11. EXECUTIVE COMPENSATION Duke Energy will provide information that is responsive to this Item 11 in its definitive proxy statement or in an amendment to this Annual Report not later than 120 days after the end of the fiscal year covered by this Annual Report. That information is incorporated in this Item 11 by reference. ITEM 12. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT AND RELATED STOCKHOLDER MATTERS Equity Compensation Plan Information The following table shows information as of December 31, 2022, about securities to be issued upon exercise of outstanding options, warrants and rights under Duke Energy’s equity compensation plans, along with the weighted average exercise price of the outstanding options, warrants and rights and the number of securities remaining available for future issuance under the plans. Plan Category Equity compensation plans approved by security holders Equity compensation plans not approved by security holders Total Number of securities to be issued upon exercise of outstanding options, warrants and rights (a) Weighted average exercise price of outstanding options, warrants and rights (b)(1) Number of securities remaining available for future issuance under equity compensation plans (excluding securities reflected in column (a)) (c) 3,385,638(2) 109,690(4) 3,495,328 n/a n/a n/a 2,410,473(3) n/a(5) 2,410,473 (1) As of December 31, 2022, no options were outstanding under equity compensation plans. (2) Includes RSUs and performance shares (assuming the maximum payout level) granted under the Duke Energy Corporation 2015 Long-Term Incentive Plan, as well as shares that could be payable with respect to certain compensation deferred under the Duke Energy Corporation Executive Savings Plan (Executive Savings Plan) or the Directors’ Savings Plan. Includes shares remaining available for issuance pursuant to stock awards under the Duke Energy Corporation 2015 Long-Term Incentive Plan. Includes shares that could be payable with respect to certain compensation deferred under the Executive Savings Plan or the Duke Energy Corporation Directors’ Savings Plan (Directors’ Savings Plan), each of which is a non-qualified deferred compensation plan described in more detail below. (3) (4) (5) The number of shares remaining available for future issuance under equity compensation plans not approved by security holders cannot be determined because it is based on the amount of future voluntary deferrals, if any, under the Executive Savings Plan and the Directors’ Savings Plan. Under the Executive Savings Plan, participants can elect to defer a portion of their base salary and short-term incentive compensation. Participants also receive a company matching contribution in excess of the contribution limits prescribed by the Internal Revenue Code under the Duke Energy Retirement Savings Plan, which is the 401(k) plan in which employees are generally eligible to participate. Eligible participants may also earn pay credits based on age and length of service on eligible earnings that exceed limits prescribed by the Internal Revenue Code. In general, payments are made following termination of employment or death in the form of a lump sum or installments, as selected by the participant. Participants may direct the deemed investment of their accounts (with certain exceptions) among investment options available under the Duke Energy Retirement Savings Plan, including the Duke Energy Common Stock Fund. Participants may change their investment elections on a daily basis. Deferrals of equity awards are credited with earnings and losses based on the performance of the Duke Energy Common Stock Fund. The benefits payable under the plan are unfunded and subject to the claims of Duke Energy’s creditors. Under the Directors’ Savings Plan, outside directors may elect to defer all or a portion of their annual compensation, generally consisting of retainers. Deferred amounts are credited to an unfunded account, the balance of which is adjusted for the performance of phantom investment options, including the Duke Energy Common Stock Fund, as elected by the director, and generally are paid when the director terminates his or her service from the Board of Directors. Duke Energy will provide additional information that is responsive to this Item 12 in its definitive proxy statement or in an amendment to this Annual Report not later than 120 days after the end of the fiscal year covered by this Annual Report. That information is incorporated in this Item 12 by reference. 209 PART IIPART IIIITEM 13. CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS AND DIRECTOR INDEPENDENCE Duke Energy will provide information that is responsive to this Item 13 in its definitive proxy statement or in an amendment to this Annual Report not later than 120 days after the end of the fiscal year covered by this Annual Report. That information is incorporated in this Item 13 by reference. ITEM 14. PRINCIPAL ACCOUNTING FEES AND SERVICES Deloitte provided professional services to the Duke Energy Registrants. The following tables present the Deloitte fees for services rendered to the Duke Energy Registrants during 2022 and 2021. (in millions) Types of Fees Audit Fees(a) Audit-Related Fees(b) Total Fees (in millions) Types of Fees Audit Fees(a) Audit-Related Fees(b) Total Fees Year Ended December 31, 2022 Duke Energy Duke Energy Carolinas Progress Energy Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana Piedmont $13.7 1.7 $15.4 $3.2 0.1 $3.3 $ 4.9 0.2 $ 5.1 $ 2.5 0.1 $ 2.6 $ 2.4 0.1 $ 2.5 $ 2.0 0.2 $ 2.2 $ $ 1.8 — 1.8 $ $ 1.3 — 1.3 Year Ended December 31, 2021 Duke Energy Duke Energy Carolinas Progress Energy Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana Piedmont $ 13.2 1.5 $ 14.7 $3.1 0.1 $3.2 $ 4.7 0.2 $ 4.9 $ 2.4 0.1 $ 2.5 $ 2.3 0.1 $ 2.4 $ 1.9 0.2 $ 2.1 $ $ 1.7 — 1.7 $ $ 1.3 — 1.3 (a) Audit Fees are fees billed, or expected to be billed, by Deloitte for professional services for the financial statement audits, audit of the Duke Energy Registrants’ financial statements included in Duke Energy’s Annual Report on Form 10-K, reviews of financial statements included in Quarterly Reports on Form 10-Q, and services associated with securities filings such as comfort letters and consents. (b) Audit-Related Fees are fees billed, or expected to be billed, by Deloitte for assurance and related services that are reasonably related to the performance of an audit or review of financial statements, including statutory reporting requirements. To safeguard the continued independence of the independent auditor, the Audit Committee of Duke Energy adopted a policy that all services provided by the independent auditor require preapproval by the Audit Committee. Pursuant to the policy, certain audit services, audit-related services, tax services and other services have been specifically preapproved up to fee limits. In the event the cost of any of these services may exceed the fee limits, the Audit Committee must specifically approve the service. All services performed in 2022 and 2021 by the independent accountant were approved by the Audit Committee pursuant to the preapproval policy. 210 PART IIPART III ITEM 15. EXHIBITS AND FINANCIAL STATEMENT SCHEDULES (a) Consolidated Financial Statements and Supplemental Schedules included in Part II of this Annual Report are as follows: Duke Energy Corporation Consolidated Financial Statements Consolidated Statements of Operations for the Years Ended December 31, 2022, 2021 and 2020 Consolidated Statements of Comprehensive Income for the Years Ended December 31, 2022, 2021 and 2020 Consolidated Balance Sheets as of December 31, 2022, and 2021 Consolidated Statements of Cash Flows for the Years Ended December 31, 2022, 2021 and 2020 Consolidated Statements of Changes in Equity for the Years Ended December 31, 2022, 2021 and 2020 Notes to the Consolidated Financial Statements Report of Independent Registered Public Accounting Firm All other schedules are omitted because they are not required, or because the required information is included in the Consolidated Financial Statements or Notes. Duke Energy Carolinas, LLC Consolidated Financial Statements Consolidated Statements of Operations and Comprehensive Income for the Years Ended December 31, 2022, 2021 and 2020 Consolidated Balance Sheets as of December 31, 2022, and 2021 Consolidated Statements of Cash Flows for the Years Ended December 31, 2022, 2021 and 2020 Consolidated Statements of Changes in Equity for the Years Ended December 31, 2022, 2021 and 2020 Notes to the Consolidated Financial Statements Report of Independent Registered Public Accounting Firm All other schedules are omitted because they are not required, or because the required information is included in the Consolidated Financial Statements or Notes. Progress Energy, Inc. Consolidated Financial Statements Consolidated Statements of Operations and Comprehensive Income for the Years Ended December 31, 2022, 2021 and 2020 Consolidated Balance Sheets as of December 31, 2022, and 2021 Consolidated Statements of Cash Flows for the Years Ended December 31, 2022, 2021 and 2020 Consolidated Statements of Changes in Equity for the Years Ended December 31, 2022, 2021 and 2020 Notes to the Consolidated Financial Statements Report of Independent Registered Public Accounting Firm All other schedules are omitted because they are not required, or because the required information is included in the Consolidated Financial Statements or Notes. Duke Energy Progress, LLC Consolidated Financial Statements Consolidated Statements of Operations and Comprehensive Income for the Years Ended December 31, 2022, 2021 and 2020 Consolidated Balance Sheets as of December 31, 2022, and 2021 Consolidated Statements of Cash Flows for the Years Ended December 31, 2022, 2021 and 2020 Consolidated Statements of Changes in Equity for the Years Ended December 31, 2022, 2021 and 2020 Notes to the Consolidated Financial Statements Report of Independent Registered Public Accounting Firm All other schedules are omitted because they are not required, or because the required information is included in the Consolidated Financial Statements or Notes. Duke Energy Florida, LLC Consolidated Financial Statements Consolidated Statements of Operations and Comprehensive Income for the Years Ended December 31, 2022, 2021 and 2020 Consolidated Balance Sheets as of December 31, 2022, and 2021 Consolidated Statements of Cash Flows for the Years Ended December 31, 2022, 2021 and 2020 Consolidated Statements of Changes in Equity for the Years Ended December 31, 2022, 2021 and 2020 Notes to the Consolidated Financial Statements Report of Independent Registered Public Accounting Firm All other schedules are omitted because they are not required, or because the required information is included in the Consolidated Financial Statements or Notes. Duke Energy Ohio, Inc. Consolidated Financial Statements Consolidated Statements of Operations and Comprehensive Income for the Years Ended December 31, 2022, 2021 and 2020 Consolidated Balance Sheets as of December 31, 2022, and 2021 Consolidated Statements of Cash Flows for the Years Ended December 31, 2022, 2021 and 2020 Consolidated Statements of Changes in Equity for the Years Ended December 31, 2022, 2021 and 2020 Notes to the Consolidated Financial Statements Report of Independent Registered Public Accounting Firm All other schedules are omitted because they are not required, or because the required information is included in the Consolidated Financial Statements or Notes. 211 PART IVDuke Energy Indiana, LLC Consolidated Financial Statements Consolidated Statements of Operations and Comprehensive Income for the Years Ended December 31, 2022, 2021 and 2020 Consolidated Balance Sheets as of December 31, 2022, and 2021 Consolidated Statements of Cash Flows for the Years Ended December 31, 2022, 2021 and 2020 Consolidated Statements of Changes in Equity for the Years Ended December 31, 2022, 2021 and 2020 Notes to the Consolidated Financial Statements Report of Independent Registered Public Accounting Firm All other schedules are omitted because they are not required, or because the required information is included in the Consolidated Financial Statements or Notes. Piedmont Natural Gas Company, Inc. Consolidated Financial Statements Consolidated Statements of Operations and Comprehensive Income for the Years Ended December 31, 2022, 2021 and 2020 Consolidated Balance Sheets as of December 31, 2022, and 2021 Consolidated Statements of Cash Flows for the Years Ended December 31, 2022, 2021 and 2020 Consolidated Statements of Changes in Equity for the Years Ended December 31, 2022, 2021 and 2020 Notes to the Consolidated Financial Statements Report of Independent Registered Public Accounting Firm All other schedules are omitted because they are not required, or because the required information is included in the Consolidated Financial Statements or Notes. 212 PART IVEXHIBIT INDEX Exhibits filed herewith 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 Energy Carolinas Duke Energy X X X X X X X Exhibit Number 2.1 2.2 3.1 3.2 3.2.1 3.3 3.3.1 3.4 3.4.1 3.5 3.5.1 3.5.2 3.5.3 Agreement and Plan of Merger between Duke Energy Corporation, Diamond Acquisition Corporation and Progress Energy, Inc., dated as of January 8, 2011 (incorporated by reference to Exhibit 2.1 to Duke Energy Corporation’s Current Report on Form 8-K filed on January 11, 2011, File No. 1-32853). Agreement and Plan of Merger between Piedmont Natural Gas Company, Duke Energy Corporation and Forest Subsidiary, Inc. (incorporated by reference to Exhibit 2.1 to Duke Energy Corporation’s Current Report on Form 8-K filed on October 26, 2015, File No. 1-32853). Amended and Restated Certificate of Incorporation (incorporated by reference to Exhibit 3.1 to Duke Energy Corporation’s Current Report on Form 8-K filed on May 20, 2014, File No. 1-32853). Amended and Restated By-Laws of Duke Energy Corporation (incorporated by reference to Exhibit 3.1 to Duke Energy Corporation’s Current Report on Form 8-K filed on January 4, 2016, File No. 1-32853). Amended and Restated By-Laws of Duke Energy Corporation, effective as of September 22, 2022, (incorporated by reference to Exhibit 3.1 to Duke Energy Corporation’s Current Report on Form 8-K filed on September 28, 2022, File No. 1-32853). Articles of Organization including Articles of Conversion (incorporated by reference to Exhibit 3.1 to Duke Energy Carolinas, LLC’s Current Report on Form 8-K filed on April 7, 2006, File No. 1-4928). Amended Articles of Organization, effective October 1, 2006 (incorporated by reference to Exhibit 3.1 to Duke Energy Carolinas, LLC’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2006, filed on November 13, 2006, File No. 1-4928). Amended Articles of Incorporation of Duke Energy Ohio, Inc. (formerly The Cincinnati Gas & Electric Company), effective October 23, 1996, (incorporated by reference to Exhibit 3(a) to registrant’s Quarterly Report on Form 10-Q for the quarter ended September 30, 1996, filed on November 13, 1996, File No. 1-1232). Amended Articles of Incorporation, effective September 19, 2006 (incorporated by reference to Exhibit 3.1 to Duke Energy Ohio, Inc.’s (formerly The Cincinnati Gas & Electric Company) Quarterly Report on Form 10-Q for the quarter ended September 30, 2006, filed on November 17, 2006, File No. 1-1232). Certificate of Conversion of Duke Energy Indiana, LLC (incorporated by reference to Exhibit 3.1 to registrant’s Current Report on Form 8-K filed on January 4, 2016, File No. 1-3543). Articles of Entity Conversion of Duke Energy Indiana, LLC (incorporated by reference to Exhibit 3.2 to registrant’s Current Report on Form 8-K filed on January 4, 2016, File No. 1-3543). Plan of Entity Conversion of Duke Energy Indiana, LLC (incorporated by reference to Exhibit 3.3 to registrant’s Current Report on Form 8-K filed on January 4, 2016, File No. 1-3543). Articles of Organization of Duke Energy Indiana, LLC (incorporated by reference to Exhibit 3.4 to registrant’s Current Report on Form 8-K filed on January 4, 2016, File No. 1-3543). E-1 Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana Piedmont Progress Energy X X X X X X X X PART IVExhibit Number 3.5.4 3.6 3.7 3.8 3.8.1 3.8.2 3.9 3.9.1 3.9.2 3.9.3 3.10 3.10.1 3.10.2 3.10.3 3.11 Duke Energy Carolinas Duke Energy Progress Energy Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana Piedmont Amended and Restated Limited Liability Company Operating Agreement of Duke Energy Indiana, LLC, dated August 25, 2021 (incorporated by reference to Exhibit 3.1 to registrant’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2021, filed on November 4, 2021, File No. 1-3543). Limited Liability Company Operating Agreement of Duke Energy Carolinas, LLC (incorporated by reference to Exhibit 3.2 to registrant’s Current Report on Form 8-K filed on April 7, 2006, File No. 1-4928). X Regulations of Duke Energy Ohio, Inc. (formerly The Cincinnati Gas & Electric Company), effective July 23, 2003 (incorporated by reference to Exhibit 3.2 to registrant’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2003, filed on August 13, 2003, File No. 1-1232). Articles of Organization including Articles of Conversion for Duke Energy Progress, LLC (incorporated by reference to Exhibit 3.1 to registrant’s Current Report on Form 8-K filed on August 4, 2015, File No. 1-3382). Plan of Conversion of Duke Energy Progress, Inc. (incorporated by reference to Exhibit 3.2 to registrant’s Current Report on Form 8-K filed on August 4, 2015, File No. 1-3382). Limited Liability Company Operating Agreement of Duke Energy Progress, LLC (incorporated by reference to Exhibit 3.3 to registrant’s Current Report on Form 8-K filed on August 4, 2015, File No. 1-3382). Amended and Restated Articles of Incorporation of Progress Energy, Inc. (formerly CP&L Energy, Inc.), effective June 15, 2000 (incorporated by reference to Exhibit 3(a)(1) to registrant’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2000, filed on August 14, 2000, File No. 1-3382). Articles of Amendment to the Amended and Restated Articles of Incorporation of Progress Energy, Inc. (formerly CP&L Energy, Inc.), effective December 4, 2000 (incorporated by reference to Exhibit 3(b)(1) to registrant’s Annual Report on Form 10-K for the year ended December 31, 2001, filed on March 28, 2002, File No. 1-3382). Articles of Amendment to the Amended and Restated Articles of Incorporation of Progress Energy, Inc. (formerly CP&L Energy, Inc.), effective May 10, 2006 (incorporated by reference to Exhibit 3(a) to registrant’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2006, filed on August 9, 2006, File No. 1-15929). By-Laws of Progress Energy, Inc. (formerly CP&L Energy, Inc.), effective May 10, 2006 (incorporated by reference to Exhibit 3(b) to registrant’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2006, filed on August 9, 2006, File No. 1-15929). Articles of Conversion for Duke Energy Florida, LLC (incorporated by reference to Exhibit 3.4 to registrant’s Current Report on Form 8-K filed on August 4, 2015, File No. 1-3274). Articles of Organization for Duke Energy Florida, LLC (incorporated by reference to Exhibit 3.5 to registrant’s Current Report on Form 8-K filed on August 4, 2015, File No. 1-3274). Plan of Conversion of Duke Energy Florida, Inc. (incorporated by reference to Exhibit 3.6 to registrant’s Current Report on Form 8-K filed on August 4, 2015, File No. 1-3274). Limited Liability Company Operating Agreement of Duke Energy Florida, LLC (incorporated by reference to Exhibit 3.7 to registrant’s Current Report on Form 8-K filed on August 4, 2015, File No. 1-3274). Amended and Restated Articles of Incorporation of Piedmont Natural Gas Company, Inc., dated as of October 3, 2016 (incorporated by reference to Exhibit 3.1 to registrant’s Annual Report on Form 10-K for the fiscal year ended October 31, 2016, filed on December 22, 2016, File No. 001-06196). E-2 X X X X X X X X X X X X X X PART IVExhibit Number 3.11.1 3.12 3.13 3.14 3.15 3.16 3.17 3.18 3.19 3.20 4.1 4.1.1 4.1.2 4.1.3 Bylaws of Piedmont Natural Gas Company, Inc., as amended and restated effective October 3, 2016 (incorporated by reference to Exhibit 3.2 to registrant’s Current Report on Form 8-K filed on October 3, 2016, File No. 1-06196). Certificate of Designations with respect to Series A Preferred Stock, dated March 28, 2019 (incorporated by reference to Exhibit 3.1 to registrant’s Current Report on Form 8-K filed on March 29, 2019, File No. 1-32853). Certificate of Designation with respect to the Series B Preferred Stock, dated September 11, 2019 (incorporated by reference to Exhibit 3.1 to registrant’s Current Report on Form 8-K filed on September 12, 2019, File No. 1-32853). Description of Registered Securities (incorporated by reference from the registrant’s prospectus contained in Form S-3 filed on September 23, 2019, File No. 333-233896,under the headings "Description of Common Stock," "Description of Preferred Stock," "Description of Depositary Shares," "Description of Stock Purchase Contracts and Stock Purchase Units," and "Description of Debt Securities"). Description of Registered Securities (incorporated by reference from the registrant’s prospectus contained in Form S-3 filed on September 23, 2019, File No. 333-233896-01, under the heading "Description of Debt Securities"). Description of Registered Securities (incorporated by reference from the registrant’s prospectus contained in Form S-3 filed on September 23, 2019, File No. 333-233896-02, under the headings "Description of First Mortgage Bonds" and "Description of Debt Securities"). Description of Registered Securities (incorporated by reference from the registrant’s prospectus contained in Form S-3 filed on September 23, 2019, File No. 333-233896-03, under the headings "Description of First Mortgage Bonds" and "Description of Unsecured Debt Securities"). Description of Registered Securities (incorporated by reference from the registrant’s prospectus contained in Form S-3 filed on September 23, 2019, File No. 333-233896-04, under the headings "Description of First Mortgage Bonds" and "Description of Unsecured Debt Securities"). Description of Registered Securities (incorporated by reference from the registrant’s prospectus contained in Form S-3 filed on September 23, 2019, File No. 333-233896-05, under the headings "Description of First Mortgage Bonds" and "Description of Debt Securities"). Description of Registered Securities (incorporated by reference from the registrant’s prospectus contained in Form S-3 filed on September 23, 2019, File No. 333-233896-06, under the headings "Description of First and Refunding Mortgage Bonds," "Description of Senior Notes," and "Description of Subordinate Notes"). Indenture between Duke Energy Corporation and The Bank of New York Mellon Trust Company, N.A., as Trustee, dated as of June 3, 2008 (incorporated by reference to Exhibit 4.1 to Duke Energy Corporation’s Current Report on Form 8-K filed on June 16, 2008, File No. 1-32853). First Supplemental Indenture, dated as of June 16, 2008 (incorporated by reference to Exhibit 4.2 to Duke Energy Corporation’s Current Report on Form 8-K filed on June 16, 2008, File No. 1-32853). Second Supplemental Indenture, dated as of January 26, 2009 (incorporated by reference to Exhibit 4.1 to Duke Energy Corporation’s Current Report on Form 8-K filed on January 26, 2009, File No. 1-32853). Third Supplemental Indenture, dated as of August 28, 2009 (incorporated by reference to Exhibit 4.1 to Duke Energy Corporation’s Current Report on Form 8-K filed on August 28, 2009, File No. 1-32853). E-3 Duke Energy Carolinas Duke Energy Progress Energy Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana Piedmont X X X X X X X X X X X X X X PART IVExhibit Number 4.1.4 4.1.5 4.1.6 4.1.7 4.1.8 4.1.9 4.1.10 4.1.11 4.1.12 4.1.13 4.1.14 4.1.15 4.1.16 4.1.17 4.1.18 4.1.19 Duke Energy Carolinas Duke Energy Progress Energy Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana Piedmont Fourth Supplemental Indenture, dated as of March 25, 2010 (incorporated by reference to Exhibit 4.1 to Duke Energy Corporation’s Current Report on Form 8-K filed on March 25, 2010, File No. 1-32853). Fifth Supplemental Indenture, dated as of August 25, 2011 (incorporated by reference to Exhibit 4.1 to Duke Energy Corporation’s Current Report on Form 8-K filed on August 25, 2011, File No. 1-32853). Sixth Supplemental Indenture, dated as of November 17, 2011 (incorporated by reference to Exhibit 4.1 to Duke Energy Corporation’s Current Report on Form 8-K filed on November 17, 2011, File No. 1-32853). Seventh Supplemental Indenture, dated as of August 16, 2012 (incorporated by reference to Exhibit 4.1 to Duke Energy Corporation’s Current Report on Form 8-K filed on August 16, 2012, File No. 1-32853). Eighth Supplemental Indenture, dated as of January 14, 2013 (incorporated by reference to Exhibit 2 to the Registration Statement on Form 8-A of Duke Energy Corporation filed on January 14, 2013, File No. 1-32853). Ninth Supplemental Indenture, dated as of June 13, 2013 (incorporated by reference to Exhibit 4.1 to Duke Energy Corporation’s Current Report on Form 8-K filed on June 13, 2013, File No. 1-32853). Tenth Supplemental Indenture, dated as of October 11, 2013 (incorporated by reference to Exhibit 4.1 to Duke Energy Corporation’s Current Report on Form 8-K filed on October 11, 2013, File No. 1-32853). Eleventh Supplemental Indenture, dated as of April 4, 2014 (incorporated by reference to Exhibit 4.1 to Duke Energy Corporation’s Current Report on Form 8-K filed on April 4, 2014, File No. 1-32853). Twelfth Supplemental Indenture, dated as of November 19, 2015 (incorporated by reference to Exhibit 4.2 to Duke Energy Corporation’s Current Report on Form 8-K filed on November 19, 2015, File No. 1-32853). Thirteenth Supplemental Indenture, dated as of April 18, 2016, to the indenture dated as of June 3, 2008, between Duke Energy Corporation and The Bank of New York Mellon Trust Company, N.A., as Trustee (incorporated by reference to Exhibit 4.1 to Duke Energy Corporation’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2016, filed on May 5, 2016, File No. 1-32853). Fourteenth Supplemental Indenture, dated as of August 12, 2016 (incorporated by reference to Exhibit 4.1 to registrant’s Current Report on Form 8-K filed on August 12, 2016, File No. 1-32853). Fifteenth Supplemental Indenture, dated as of April 11, 2017 (incorporated by reference to Exhibit 4.2 to registrant’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2017, filed on May 9, 2017, File No. 1-32853). Sixteenth Supplemental Indenture, dated as of June 13, 2017 (incorporated by reference to Exhibit 4.1 to registrant’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2017, filed on August 3, 2017, File No. 1-32853). Seventeenth Supplemental Indenture, dated as of August 10, 2017 (incorporated by reference to Exhibit 4.1 to registrant’s Current Report on Form 8-K filed on August 10, 2017, File No. 1-32853). Eighteenth Supplemental Indenture, dated as of March 29, 2018 (incorporated by reference to Exhibit 4.2 to registrant’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2018, filed on May 10, 2018, File No. 1-32853). Nineteenth Supplemental Indenture, dated as of May 16, 2018 (incorporated by reference to Exhibit 4.1 to registrant’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2018, filed on August 2, 2018, File No. 1-32853). X X X X X X X X X X X X X X X X E-4 PART IVExhibit Number 4.1.20 4.1.21 4.1.22 4.1.23 4.1.24 4.1.25 4.1.26 4.1.27 4.1.28 4.1.29 4.2 4.2.1 4.2.2 4.3 Duke Energy Carolinas Duke Energy Progress Energy Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana Piedmont X X X X X X X X X X Twentieth Supplemental Indenture (incorporated by reference to Exhibit 4.2 to registrant’s Registration Statement on Form 8-A filed on September 17, 2018, File No. 1-32853). Twenty-first Supplemental Indenture (incorporated by reference to Exhibit 4.1 to registrant’s Current Report on Form 8-K filed on March 11, 2019, File no. 1-32853). Twenty-second Supplemental Indenture, dated as of June 7, 2019 (incorporated by reference to Exhibit 4.1 to registrant’s Current Report on Form 8-K filed on June 7, 2019, File No. 1-32853). Twenty-third Supplemental Indenture, dated as of May 15, 2020 (incorporated by reference to Exhibit 4.1 to registrant’s Current Report on Form 8-K filed on May 15, 2020, File No. 1-32853). Twenty-fourth Supplemental Indenture, dated as of September 11, 2020 (incorporated by reference to Exhibit 4.2 to registrant’s Current Report on Form 8-K filed on September 11, 2020, File No. 1-32853). Twenty-fifth Supplemental Indenture, dated as of June 10, 2021 (incorporated by reference to Exhibit 4.1 to registrant’s Current Report on Form 8-K filed on June 10, 2021, File No. 1-32853). Twenty-sixth Supplemental Indenture, dated as of September 28, 2021 (incorporated by reference to Exhibit 4.1 to registrant’s Current Report on Form 8-K filed on September 28, 2021, File No. 1-32853). Twenty-seventh Supplemental Indenture, dated as of June 15, 2022, to the indenture, dated as of June 3, 2008, between Duke Energy Corporation and The Bank of New York Mellon Trust Company, N.A., as Trustee (incorporated by reference to Exhibit 4.1 to registrant’s Current Report on Form 8-K filed on June 15, 2022, File No. 1-32853). Twenty-eighth Supplemental Indenture, dated as of August 11, 2022, to the indenture, dated as of June 3, 2008, between Duke Energy Corporation and The Bank of New York Mellon Trust Company, N.A., as Trustee, and forms of global notes included therein (incorporated by reference to Exhibit 4.1 to registrant’s Current Report on Form 8-K filed on August 11, 2022, File No. 1-32853). Twenty-ninth Supplemental Indenture, dated as of December 8, 2022, to the Indenture, dated as of June 3, 2008, between Duke Energy Corporation and The Bank of New York Mellon Trust Company, N.A., as Trustee, and forms of global notes included therein (incorporated by reference to Exhibit 4.1 to registrant’s Current Report on Form 8-K filed on December 8, 2022, File No. 1-32853). Senior Indenture between Duke Energy Carolinas, LLC and The Bank of New York Mellon Trust Company, N.A., as successor trustee to JPMorgan Chase Bank (formerly known as The Chase Manhattan Bank), dated as of September 1, 1998 (incorporated by reference to Exhibit 4-D-1 to registrant’s Post-Effective Amendment No. 2 to Registration Statement on Form S-3 filed on April 7, 1999, File No. 333-14209). Fifteenth Supplemental Indenture, dated as of April 3, 2006 (incorporated by reference to Exhibit 4.4.1 to registrant’s Registration Statement on Form S-3 filed on October 3, 2007, File No. 333-146483-03). Sixteenth Supplemental Indenture, dated as of June 5, 2007 (incorporated by reference to Exhibit 4.1 registrant’s Current Report on Form 8-K filed on June 6, 2007, File No. 1-4928). First and Refunding Mortgage from Duke Energy Carolinas, LLC to The Bank of New York Mellon Trust Company, N.A., successor trustee to Guaranty Trust Company of New York, dated as of December 1, 1927 (incorporated by reference to Exhibit 7(a) to registrant’s Form S-1, effective October 15, 1947, File No. 2-7224). E-5 X X X X PART IV Exhibit Number 4.3.1 4.3.2 4.3.3 4.3.4 4.3.5 4.3.6 4.3.7 4.3.8 4.3.9 4.3.10 4.3.11 4.3.12 4.3.13 4.3.14 4.3.15 4.3.16 Instrument of Resignation, Appointment and Acceptance among Duke Energy Carolinas, LLC, JPMorgan Chase Bank, N.A., as Trustee, and The Bank of New York Mellon Trust Company, N.A., as Successor Trustee, dated as of September 24, 2007, (incorporated by reference to Exhibit 4.6.1 to registrant’s Registration Statement on Form S-3 filed on October 3, 2007, File No. 333-146483). Ninth Supplemental Indenture, dated as of February 1, 1949 (incorporated by reference to Exhibit 7(j) to registrant’s Form S-1 filed on February 3, 1949, File No. 2-7808). Twentieth Supplemental Indenture, dated as of June 15, 1964 (incorporated by reference to Exhibit 4-B-20 to registrant’s Form S-1 filed on August 23, 1966, File No. 2-25367). Twenty-third Supplemental Indenture, dated as of February 1, 1968 (incorporated by reference to Exhibit 2-B-26 to registrant’s Form S-9 filed on January 21, 1969, File No. 2-31304). Sixtieth Supplemental Indenture, dated as of March 1, 1990 (incorporated by reference to Exhibit 4-B-61 to registrant’s Annual Report on Form 10-K for the year ended December 31, 1990, File No.1-4928). Sixty-third Supplemental Indenture, dated as of July 1, 1991 (incorporated by reference to Exhibit 4-B-64 to registrant’s Registration Statement on Form S-3 filed on February 13, 1992, File No. 33-45501). Eighty-fourth Supplemental Indenture, dated as of March 20, 2006 (incorporated by reference to Exhibit 4.6.9 to registrant’s Registration Statement on Form S-3 filed on October 3, 2007, File No. 333-146483-03). Eighty-fifth Supplemental Indenture, dated as of January 10, 2008 (incorporated by reference to Exhibit 4.1 to Duke Energy Carolinas, LLC’s Current Report on Form 8-K filed on January 11, 2008, File No.1-4928). Eighty-seventh Supplemental Indenture, dated as of April 14, 2008 (incorporated by reference to Exhibit 4.1 to Duke Energy Carolinas, LLC’s Current Report on Form 8-K filed on April 15, 2008, File No.1-4928). Eighty-eighth Supplemental Indenture, dated as of November 17, 2008 (incorporated by reference to Exhibit 4.1 to Duke Energy Carolinas, LLC’s Current Report on Form 8-K filed on November 20, 2008, File No.1-4928). Ninetieth Supplemental Indenture, dated as of November 19, 2009 (incorporated by reference to Exhibit 4.1 to Duke Energy Carolinas, LLC’s Current Report on Form 8-K filed on November 19, 2009, File No.1-4928). Ninety-first Supplemental Indenture, dated as of June 7, 2010 (incorporated by reference to Exhibit 4.1 to Duke Energy Carolinas, LLC’s Current Report on Form 8-K filed on June 7, 2010, File No.1-4928). Ninety-third Supplemental Indenture, dated as of May 19, 2011 (incorporated by reference to Exhibit 4.1 to Duke Energy Carolinas, LLC’s Current Report on Form 8-K filed on May 19, 2011, File No.1-4928). Ninety-fourth Supplemental Indenture, dated as of December 8, 2011 (incorporated by reference to Exhibit 4.1 to Duke Energy Carolinas, LLC’s Current Report on Form 8-K filed on December 8, 2011, File No.1-4928). Ninety-fifth Supplemental Indenture, dated as of September 21, 2012 (incorporated by reference to Exhibit 4.1 to Duke Energy Carolinas, LLC’s Current Report on Form 8-K filed on September 21, 2012, File No.1-4928). Ninety-sixth Supplemental Indenture, dated as of March 12, 2015, between Duke Energy Carolinas, LLC and The Bank of New York Mellon Trust Company, N.A., as Trustee (incorporated by reference to Exhibit 4.1 to Duke Energy Carolinas, LLC’s Current Report on Form 8-K filed on March 12, 2015, File No. 1-4928). E-6 Duke Energy Carolinas Duke Energy Progress Energy Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana Piedmont X X X X X X X X X X X X X X X X PART IV Exhibit Number 4.3.17 4.3.18 4.3.19 4.3.20 4.3.21 4.3.22 4.3.23 4.3.24 4.3.25 4.4 4.4.1 4.4.2 4.4.3 4.4.4 4.4.5 4.4.6 4.4.7 4.4.8 Ninety-seventh Supplemental Indenture, dated as of March 11, 2016 (incorporated by reference to Exhibit 4.1 to Duke Energy Carolinas, LLC’s Current Report on Form 8-K filed on March 11, 2016, File No. 1-4928). Ninety-eighth Supplemental Indenture, dated as of November 17, 2016 (incorporated by reference to Exhibit 4.1 to Duke Energy Carolinas, LLC’s Current Report on Form 8-K filed on November 17, 2016, File No. 1-4928). Ninety-ninth Supplemental Indenture, dated as of November 14, 2017 (incorporated by reference to Exhibit 4.1 to Duke Energy Carolinas, LLC Current Report on Form 8-K filed on November 14, 2017, File No. 1-4928). One Hundredth Supplemental Indenture, dated as of March 1, 2018 (incorporated by reference to Exhibit 4.1 to registrant’s Current Report on Form 8-K filed on March 1, 2018, File No. 1-4928). One-Hundred and Second Supplemental Indenture, dated as of August 14, 2019 (incorporated by reference to Exhibit 4.1 to registrant’s Current Report on Form 8-K filed on August 14, 2019, File No. 1-4928). One-Hundred and Third Supplemental Indenture, dated as of January 8, 2020 (incorporated by reference to Exhibit 4.2 to registrant’s Current Report on Form 8-K filed on January 8, 2020, File No. 1-4928). One-Hundred and Fourth Supplemental Indenture, dated as of January 8, 2020 (incorporated by reference to Exhibit 4.3 to registrant’s Current Report on Form 8-K filed on January 8, 2020, File No. 1-4928). One-Hundred and Fifth Supplemental Indenture, dated as of April 1, 2021 (incorporated by reference to Exhibit 4.1 to registrant’s Current Report on Form 8-K filed on April 1, 2021, File No. 1-4928). 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). Mortgage and Deed of Trust between Duke Energy Progress, Inc. (formerly Carolina Power & Light Company) and The Bank of New York Mellon (formerly Irving Trust Company) and Frederick G. Herbst (Tina D. Gonzalez, successor), as Trustees, dated as of May 1, 1940. First through Fifth Supplemental Indentures thereto (incorporated by reference to Exhibit 2(b), File No. 2-64189). Sixth Supplemental Indenture dated April 1, 1960 (incorporated by reference to Exhibit 2(b)-5, File No. 2-16210). Seventh Supplemental Indenture dated November 1, 1961 (incorporated by reference to Exhibit 2(b)-6, File No. 2-16210). Eighth Supplemental Indenture dated July 1, 1964 (incorporated by reference to Exhibit 4(b)-8, File No. 2-19118). Ninth Supplemental Indenture dated April 1, 1966 (incorporated by reference to Exhibit 4(b)-2, File No. 2-22439). Tenth Supplemental Indenture dated October 1, 1967 (incorporated by reference to Exhibit 4(b)-2, File No. 2-24624). Eleventh Supplemental Indenture dated October 1, 1968 (incorporated by reference to Exhibit 2(c), File No. 2-27297). Twelfth Supplemental Indenture dated January 1, 1970 (incorporated by reference to Exhibit 2(c), File No. 2-30172). E-7 Duke Energy Carolinas Duke Energy Progress Energy Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana Piedmont X X X X X X X X X X X X X X X X X X PART IV Exhibit Number 4.4.9 4.4.10 4.4.11 4.4.12 4.4.13 4.4.14 4.4.15 4.4.16 4.4.17 4.4.18 4.4.19 4.4.20 4.4.21 4.4.22 4.4.23 4.4.24 4.4.25 4.4.26 4.4.27 4.4.28 4.4.29 4.4.30 4.4.31 4.4.32 Thirteenth Supplemental Indenture dated August 1, 1970 (incorporated by reference to Exhibit 2(c), File No. 2-35694). Fourteenth Supplemental Indenture dated January 1, 1971 (incorporated by reference to Exhibit 2(c), File No. 2-37505). Fifteenth Supplemental Indenture dated October 1, 1971 (incorporated by reference to Exhibit 2(c), File No. 2-39002). Sixteenth Supplemental Indenture dated May 1, 1972 (incorporated by reference to Exhibit 2(c), File No. 2-41738). Seventeenth Supplemental Indenture dated November 1, 1973 (incorporated by reference to Exhibit 2(c), File No. 2-43439). Eighteenth Supplemental Indenture dated (incorporated by reference to Exhibit 2(c), File No. 2-47751). Nineteenth Supplemental Indenture dated May 1, 1974 (incorporated by reference to Exhibit 2(c), File No. 2-49347). Twentieth Supplemental Indenture dated December 1, 1974 (incorporated by reference to Exhibit 2(c), File No. 2-53113). Twenty-first Supplemental Indenture dated April 15, 1975 (incorporated by reference to Exhibit 2(d), File No. 2-53113). Twenty-second Supplemental Indenture dated October 1, 1977 (incorporated by reference to Exhibit 2(c), File No. 2-59511). Twenty-third Supplemental Indenture dated June 1, 1978 (incorporated by reference to Exhibit 2(c), File No. 2-61611). Twenty-fourth Supplemental Indenture dated May 15, 1979 (incorporated by reference to Exhibit 2(d), File No. 2-64189). Twenty-fifth Supplemental Indenture dated November 1, 1979 (incorporated by reference to Exhibit 2(c), File No. 2-65514). Twenty-sixth Supplemental Indenture dated November 1, 1979 (incorporated by reference to Exhibit 2(c), File No. 2-66851). Twenty-seventh Supplemental Indenture dated April 1, 1980 (incorporated by reference to Exhibit 2 (d), File No. 2-66851). Twenty-eighth Supplemental Indenture dated October 1, 1980 (incorporated by reference to Exhibit 4(b)-1, File No. 2-81299). Twenty-ninth Supplemental Indenture dated October 1, 1980 (incorporated by reference to Exhibit 4(b)-2, File No. 2-81299). Thirtieth Supplemental Indenture dated December 1, 1982 (incorporated by reference to Exhibit 4(b)- 3, File No. 2-81299). Thirty-first Supplemental Indenture dated March 15, 1983 (incorporated by reference to Exhibit 4(c)-1, File No. 2-95505). Thirty-second Supplemental Indenture dated March 15, 1983 (incorporated by reference to Exhibit 4(c)-2, File No. 2-95505). Thirty-third Supplemental Indenture dated December 1, 1983 (incorporated by reference to Exhibit 4(c)-3, File No. 2-95505). Thirty-fourth Supplemental Indenture dated December 15, 1983 (incorporated by reference to Exhibit 4(c)-4, File No. 2-95505). Thirty-fifth Supplemental Indenture dated April 1, 1984 (incorporated by reference to Exhibit 4(c)-5, File No. 2-95505). Thirty-sixth Supplemental Indenture dated June 1, 1984 (incorporated by reference to Exhibit 4(c)-6, File No. 2-95505). E-8 Duke Energy Carolinas Duke Energy Progress Energy Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana Piedmont X X X X X X X X X X X X X X X X X X X X X X X X PART IVExhibit Number 4.4.33 4.4.34 4.4.35 4.4.36 4.4.37 4.4.38 4.4.39 4.4.40 4.4.41 4.4.42 4.4.43 4.4.44 4.4.45 4.4.46 4.4.47 4.4.48 4.4.49 4.4.50 4.4.51 4.4.52 4.4.53 4.4.54 4.4.55 Thirty-seventh Supplemental Indenture dated June 1, 1984 (incorporated by reference to Exhibit 4(c)-7, File No. 2-95505). Thirty-eighth Supplemental Indenture dated June 1, 1984 (incorporated by reference to Exhibit 4(c)- 8, File No. 2-95505). Thirty-ninth Supplemental Indenture dated April 1, 1985 (incorporated by reference to Exhibit 4(b), File No. 33-25560). Fortieth Supplemental Indenture dated October 1, 1985 (incorporated by reference to Exhibit 4(c), File No. 33-25560). Forty-first Supplemental Indenture dated March 1, 1986 (incorporated by reference to Exhibit 4(d), File No. 33-25560). Forty-second Supplemental Indenture dated July 1, 1986 (incorporated by reference to Exhibit 4(e), File No. 33-25560). Forty-third Supplemental Indenture dated January 1, 1987 (incorporated by reference to Exhibit 4(f), File No. 33-25560). Forty-fourth Supplemental Indenture dated December 1, 1987 (incorporated by reference to Exhibit 4(g), File No. 33-25560). Forty-fifth Supplemental Indenture dated September 1, 1988 (incorporated by reference to Exhibit 4(h), File No. 33-25560). Forty-sixth Supplemental Indenture dated April 1, 1989 (incorporated by reference to Exhibit 4(b), File No. 33-33431). Forty-seventh Supplemental Indenture dated August 1, 1989 (incorporated by reference to Exhibit 4(c), File No. 33-33431). Forty-eighth Supplemental Indenture dated November 15, 1990 (incorporated by reference to Exhibit 4(b), File No. 33-38298). Forty-ninth Supplemental Indenture dated November 15, 1990 (incorporated by reference to Exhibit 4(c), File No. 33-38298). Fiftieth Supplemental Indenture dated February 15, 1991 (incorporated by reference to Exhibit 4(h), File No. 33-42869). Fifty-first Supplemental Indenture dated April 1, 1991 (incorporated by reference to Exhibit 4(i), File No. 33-42869). Fifty-second Supplemental Indenture dated September 15, 1991 (incorporated by reference to Exhibit 4(e), File No. 33-48607). Fifty-third Supplemental Indenture dated January 1, 1992 (incorporated by reference to Exhibit 4(f), File No. 33-48607). Fifty-fourth Supplemental Indenture dated April 15, 1992 (incorporated by reference to Exhibit 4 (g), File No. 33-48607). Fifty-fifth Supplemental Indenture dated July 1, 1992 (incorporated by reference to Exhibit 4(e), File No. 33-55060). Fifty-sixth Supplemental Indenture dated October 1, 1992 (incorporated by reference to Exhibit 4(f), File No. 33-55060). Fifty-seventh Supplemental Indenture dated February 1, 1993 (incorporated by reference to Exhibit 4(e), File No. 33-60014). Fifty-eighth Supplemental Indenture dated March 1, 1993 (incorporated by reference to Exhibit 4(f), File No. 33-60014). Fifty-ninth Supplemental Indenture dated July 1, 1993 (incorporated by reference to Exhibit 4(a) to Post-Effective Amendment No. 1, File No. 33-38349). E-9 Duke Energy Carolinas Duke Energy Progress Energy Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana Piedmont X X X X X X X X X X X X X X X X X X X X X X X PART IVExhibit Number 4.4.56 4.4.57 4.4.58 4.4.59 4.4.60 4.4.61 4.4.62 4.4.63 4.4.64 4.4.65 4.4.66 4.4.67 4.4.68 4.4.69 4.4.70 Duke Energy Carolinas Duke Energy Progress Energy Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana Piedmont Sixtieth Supplemental Indenture dated July 1, 1993 (incorporated by reference to Exhibit 4(b) to Post-Effective Amendment No. 1, File No. 33-38349). Sixty-first Supplemental Indenture dated August 15, 1993 (incorporated by reference to Exhibit 4(e), File No. 33-50597). Sixty-second Supplemental Indenture dated January 15, 1994 (incorporated by reference to Exhibit 4 to Duke Energy Progress’ Current Report on Form 8-K dated January 19, 1994, File No. 1-3382). Sixty-third Supplemental Indenture dated May 1, 1994 (incorporated by reference to Exhibit 4(f) for Duke Energy Progress’ Form S-3, File No. 033-57835). Sixty-fourth Supplemental Indenture dated August 15, 1997 (incorporated by reference to Exhibit to Duke Energy Progress’ Current Report on Form 8-K dated August 26, 1997, File No. 1-3382). Sixty-fifth Supplemental Indenture dated April 1, 1998 (incorporated by reference to Exhibit 4(b) for Duke Energy Progress’ Registration Statement on Form S-3 filed December 18, 1998, File No. 333-69237). Sixty-sixth Supplemental Indenture dated March 1, 1999 (incorporated by reference to Exhibit 4(c) to Duke Energy Progress’ Current Report on Form 8-K filed on March 19, 1999, File No. 1-3382). Form of Carolina Power & Light Company First Mortgage Bond, 6.80% Series Due August 15, 2007 (incorporated by reference to Exhibit 4 to Duke Energy Progress’ Form 10-Q for the period ended September 30, 1998, File No. 1-3382). Sixty-eighth Supplemental Indenture dated April 1, 2000 (incorporated by reference to Exhibit No. 4(b) to Duke Energy Progress’ Current Report on Form 8-K filed on April 20, 2000, File No. 1-3382). Sixty-ninth Supplemental Indenture dated June 1, 2000 (incorporated by reference to Exhibit No. 4b(2) to Duke Energy Progress’ Annual Report on Form 10-K for the year ended December 31, 2000, filed on March 29, 2001, File No. 1-3382). Seventieth Supplemental Indenture dated July 1, 2000 (incorporated by reference to Exhibit 4b(3) to Duke Energy Progress’ Annual Report on Form 10-K for the year ended December 31, 2000, filed on March 29, 2001, File No. 1-3382). Seventy-first Supplemental Indenture dated February 1, 2002 (incorporated by reference to Exhibit 4b(2) to Duke Energy Progress’ Annual Report on Form 10-K for the year ended December 31, 2001, filed on March 28, 2002, File No. 1-3382 and 1-15929). Seventy-second Supplemental Indenture, dated as of September 1, 2003 (incorporated by reference to Exhibit 4 to Duke Energy Progress, Inc.’s (formerly Carolina Power & Light Company (d/b/a Progress Energy Carolinas, Inc.)) Current Report on Form 8-K filed on September 12, 2003, File No. 1-3382). Seventy-third Supplemental Indenture, dated as of March 1, 2005 (incorporated by reference to Exhibit 4 to Duke Energy Progress, Inc.’s (formerly Carolina Power & Light Company (d/b/a Progress Energy Carolinas, Inc.)) Current Report on Form 8-K filed on March 22, 2005, File No. 1-3382). Seventy-fourth Supplemental Indenture, dated as of November 1, 2005 (incorporated by reference to Exhibit 4 to Duke Energy Progress, Inc.’s (formerly Carolina Power & Light Company (d/b/a Progress Energy Carolinas, Inc.)) Current Report on Form 8-K filed on November 30, 2005, File No. 1-3382). E-10 X X X X X X X X X X X X X X X PART IVExhibit Number 4.4.71 4.4.72 4.4.73 4.4.74 4.4.75 4.4.76 4.4.77 4.4.78 4.4.79 4.4.80 4.4.81 4.4.82 4.4.83 4.4.84 Duke Energy Carolinas Duke Energy Progress Energy Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana Piedmont Seventy-fifth Supplemental Indenture, dated as of March 1, 2008 (incorporated by reference to Exhibit 4 to Duke Energy Progress, Inc.’s (formerly Carolina Power & Light Company (d/b/a Progress Energy Carolinas, Inc.)) Current Report on Form 8-K filed on March 13, 2008, File No. 1-3382). Seventy-sixth Supplemental Indenture, dated as of January 1, 2009 (incorporated by reference to Exhibit 4 to Duke Energy Progress, Inc.’s (formerly Carolina Power & Light Company (d/b/a Progress Energy Carolinas, Inc.)) Current Report on Form 8-K filed on January 15, 2009, File No. 1-3382). Seventy-seventh Supplemental Indenture, dated as of June 18, 2009 (incorporated by reference to Exhibit 4 to Duke Energy Progress, Inc.’s (formerly Carolina Power & Light Company (d/b/a Progress Energy Carolinas, Inc.)) Current Report on Form 8-K filed on June 23, 2009, File No. 1-3382). Seventy-eighth Supplemental Indenture, dated as of September 1, 2011 (incorporated by reference to Exhibit 4 to Duke Energy Progress, Inc.’s (formerly Carolina Power & Light Company (d/b/a Progress Energy Carolinas, Inc.)) Current Report on Form 8-K filed on September 15, 2011, File No. 1-3382). Seventy-ninth Supplemental Indenture, dated as of May 1, 2012 (incorporated by reference to Exhibit 4 to Duke Energy Progress, Inc.’s (formerly Carolina Power & Light Company (d/b/a Progress Energy Carolinas, Inc.)) Current Report on Form 8-K filed on May 18, 2012, File No. 1-3382). Eightieth Supplemental Indenture, dated as of March 1, 2013 (incorporated by reference to Exhibit 4.1 to Duke Energy Progress, Inc.’s (formerly Carolina Power & Light Company (d/b/a Progress Energy Carolinas, Inc.)) Current Report on Form 8-K filed on March 12, 2013, File No. 1-3382). Eighty-second Supplemental Indenture, dated as of March 1, 2014, between Duke Energy Progress, Inc. and The Bank of New York Mellon (formerly Irving Trust Company) and Tina D. Gonzalez (successor to Frederick G. Herbst) and forms of global notes (incorporated by reference to Exhibit 4.1 to Duke Energy Progress, Inc.’s Current Report on Form 8-K filed on March 6, 2014, File No. 1-3382). Eighty-third Supplemental Indenture, dated as of November 1, 2014, between Duke Energy Progress, Inc. and The Bank of New York Mellon (formerly Irving Trust Company) and Tina D. Gonzalez (successor to Frederick G. Herbst) and forms of global notes (incorporated by reference to Exhibit 4.1 to Duke Energy Progress, Inc.’s Current Report on Form 8-K filed on November 20, 2014, File No. 1-3382). Eighty-fifth Supplemental Indenture, dated as of August 1, 2015 (incorporated by reference to Exhibit 4.1 to Duke Energy Progress, LLC’s Current Report on Form 8-K filed on August 13, 2015, File No. 1-3382). Eighty-sixth Supplemental Indenture, dated as of September 1, 2016 (incorporated by reference to Exhibit 4.1 to registrant’s Current Report on Form 8-K filed on September 16, 2016, File No. 1-15929). Eighty-seventh Supplemental Indenture, dated as of September 1, 2017 (incorporated by reference to Exhibit 4.1 to registrant’s Current Report on Form 8-K filed on September 8, 2017, File No. 1-3382). Eighty-ninth Supplemental Indenture (incorporated by reference to Exhibit 4.1 to registrant’s Current Report on Form 8-K filed on March 7, 2019, File no. 1-3382). Ninetieth Supplemental Indenture, dated as of August 1, 2020 (incorporated by reference to Exhibit 4.1 to registrant’s Current Report on Form 8-K filed on August 20, 2020, File No. 1-3382). Ninety-first Supplemental Indenture, dated as of August 1, 2021 (incorporated by reference to Exhibit 4.1 to registrant’s Current Report on Form 8-K filed on August 12, 2021, File No. 1-3382). E-11 X X X X X X X X X X X X X X PART IVExhibit Number 4.4.85 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). 4.4.86 First Supplemental Indenture, dated as of August 1, 2020 (incorporated by reference to Exhibit 4.2 to registrant’s Current Report on Form 8-K filed on August 20, 2020, File No. 1-3382). 4.5 4.6 4.7 4.7.1 4.7.2 4.7.3 4.7.4 4.7.5 4.7.6 4.7.7 4.7.8 Indenture (for Debt Securities) between Duke Energy Progress, Inc. (formerly Carolina Power & Light Company) and The Bank of New York Mellon (successor in interest to The Chase Manhattan Bank), as Trustee (incorporated by reference to Exhibit 4(a) to registrant’s Current Report on Form 8-K filed on November 5, 1999, File No. 1-3382). Indenture (for [Subordinated] Debt Securities) (open ended) (incorporated by reference to Exhibit 4(a)(2) to Duke Energy Progress, Inc.’s (formerly Carolina Power & Light Company (d/b/a Progress Energy Carolinas, Inc.)) Registration Statement on Form S-3 filed on November 18, 2008, File No. 333-155418). Indenture (for First Mortgage Bonds) between Duke Energy Florida, Inc. (formerly Florida Power Corporation) and The Bank of New York Mellon (as successor to Guaranty Trust Company of New York and The Florida National Bank of Jacksonville), as Trustee, dated as of January 1, 1944, (incorporated by reference to Exhibit B-18 to registrant’s Form A-2, File No. 2-5293). Seventh Supplemental Indenture (incorporated by reference to Exhibit 4(b) to Duke Energy Florida, Inc.’s (formerly Florida Power Corporation) Registration Statement on Form S-3 filed on September 27, 1991, File No. 33-16788). Eighth Supplemental Indenture (incorporated by reference to Exhibit 4(c) to Duke Energy Florida, Inc.’s (formerly Florida Power Corporation) Registration Statement on Form S-3 filed on September 27, 1991, File No. 33-16788). Sixteenth Supplemental Indenture (incorporated by reference to Exhibit 4(d) to Duke Energy Florida, Inc.’s (formerly Florida Power Corporation) Registration Statement on Form S-3 filed on September 27, 1991, File No. 33-16788). Twenty-ninth Supplemental Indenture (incorporated by reference to Exhibit 4(c) to Duke Energy Florida, Inc.’s (formerly Florida Power Corporation) Registration Statement on Form S-3 filed on September 17, 1982, File No. 2-79832). Thirty-eighth Supplemental Indenture, dated as of July 25, 1994 (incorporated by reference to exhibit 4(f) to Duke Energy Florida, Inc.’s (formerly Florida Power Corporation) Registration Statement on Form S-3 filed on August 29, 1994, File No. 33-55273). Forty-first Supplemental Indenture, dated as of February 1, 2003 (incorporated by reference to Exhibit 4 to Duke Energy Florida, Inc.’s (formerly Duke Energy Florida Power Corporation (d/b/a Progress Energy Florida, Inc.)) Current Report on Form 8-K filed on February 21, 2003, File No. 1-3274). Forty-second Supplemental Indenture, dated as of April 1, 2003 (incorporated by reference to Exhibit 4 to Duke Energy Florida, Inc.’s (formerly Florida Power Corporation (d/b/a Progress Energy Florida, Inc.)) Quarterly Report on Form 10-Q for the quarter ended June 30, 2003, filed on August 11, 2003, File No. 1-3274). Forty-third Supplemental Indenture, dated as of November 1, 2003 (incorporated by reference to Exhibit 4 to Duke Energy Florida, Inc.’s (formerly Florida Power Corporation (d/b/a Progress Energy Florida, Inc.)) Current Report on Form 8-K filed on November 21, 2003, File No. 1-3274). Duke Energy Carolinas Duke Energy Progress Energy Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana Piedmont X X X X X X X X X X X X X E-12 PART IV Duke Energy Carolinas Duke Energy Progress Energy Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana Piedmont Exhibit Number 4.7.9 4.7.10 4.7.11 4.7.12 4.7.13 4.7.14 4.7.15 4.7.16 4.7.17 4.7.18 4.7.19 4.7.20 4.8 Forty-fourth Supplemental Indenture, dated as of August 1, 2004 (incorporated by reference to Exhibit 4(m) to Duke Energy Florida, Inc.’s (formerly Florida Power Corporation (d/b/a Progress Energy Florida, Inc.)) Annual Report on Form 10-K for the year ended December 31, 2004, filed on March 16, 2005, File No. 1-3274). Forty-sixth Supplemental Indenture, dated as of September 1, 2007 (incorporated by reference to Exhibit 4 to Duke Energy Florida, Inc.’s (formerly Florida Power Corporation (d/b/a Progress Energy Florida, Inc.)) Current Report on Form 8-K filed on September 19, 2007, File No. 1-3274). Forty-seventh Supplemental Indenture, dated as of December 1, 2007 (incorporated by reference to Exhibit 4 to Duke Energy Florida, Inc.’s (formerly Florida Power Corporation (d/b/a Progress Energy Florida, Inc.)) Current Report on Form 8-K filed on December 13, 2007, File No. 1-3274). Forty-eighth Supplemental Indenture, dated as of June 1, 2008 (incorporated by reference to Exhibit 4 to Duke Energy Florida, Inc.’s (formerly Florida Power Corporation (d/b/a Progress Energy Florida, Inc.)) Current Report on Form 8-K filed on June 18, 2008, File No. 1-3274). Forty-ninth Supplemental Indenture, dated as of March 1, 2010 (incorporated by reference to Exhibit 4 to Duke Energy Florida, Inc.’s (formerly Florida Power Corporation (d/b/a Progress Energy Florida, Inc.)) Current Report on Form 8-K filed on March 25, 2010, File No. 1-3274). Fiftieth Supplemental Indenture, dated as of August 11, 2011 (incorporated by reference to Exhibit 4 to Duke Energy Florida, Inc.’s (formerly Florida Power Corporation (d/b/a Progress Energy Florida, Inc.)) Current Report on Form 8-K filed on August 18, 2011, File No. 1-3274). Fifty-first Supplemental Indenture, dated as of November 1, 2012 (incorporated by reference to Exhibit 4.1 to Duke Energy Florida, Inc.’s (formerly Florida Power Corporation (d/b/a Progress Energy Florida, Inc.)) Current Report on Form 8-K filed on November 20, 2012, File No. 1-3274). Fifty-third Supplemental Indenture, dated as of September 1, 2016 (incorporated by reference to Exhibit 4.1 to registrant’s Current Report on Form 8-K filed on September 9, 2016, File No. 1-03274). Fifty-fifth Supplemental Indenture, dated as of June 1, 2018 (incorporated by reference to Exhibit 4.1 to registrant’s Current Report on Form 8-K filed on June 21, 2018, File No. 1-3274). Fifty-sixth Supplemental Indenture, dated as of November 1, 2019 (incorporated by reference to Exhibit 4.1 to registrant’s Current Report on Form 8-K filed on November 26, 2019, File No. 1-3274). Fifty-seventh Supplemental Indenture, dated as of June 1, 2020 (incorporated by reference to Exhibit 4.1 to registrant’s Current Report on Form 8-K filed on June 11, 2020, File No. 1-3274). Fifty-eighth Supplemental Indenture, dated as of November 1, 2021 (incorporated by reference to Exhibit 4.1 to registrant’s Current Report on Form 8-K filed on December 2, 2021, File No. 1-3274). Indenture (for Debt Securities) between Duke Energy Florida, Inc. (formerly Florida Power Corporation (d/b/a Progress Energy Florida, Inc.)) and The Bank of New York Mellon Trust Company, National Association (successor in interest to J.P. Morgan Trust Company, National Association), as Trustee, dated as of December 7, 2005 (incorporated by reference to Exhibit 4(a) to registrant’s Current Report on Form 8-K filed on December 13, 2005, File No. 1-3274). 4.8.1 First Supplemental Indenture, dated as of December 12, 2017 (incorporated by reference to Exhibit 4.1 to registrant’s Current Report on Form 8-K filed on December 12, 2017, File No. 1-03274). E-13 X X X X X X X X X X X X X X PART IVExhibit Number 4.8.2 4.9 4.10 4.10.1 4.10.2 4.11 4.11.1 4.11.2 4.11.3 4.11.4 4.11.5 4.11.6 4.12 4.12.1 Second Supplemental Indenture, dated as of November 26, 2019 (incorporated by reference to Exhibit 4.2 to registrant’s Current Report on Form 8-K filed on November 26, 2019, File No. 1-3274). Indenture (for [Subordinated] Debt Securities) (open ended) (incorporated by reference to Exhibit 4(a)(2) Duke Energy Florida, Inc.’s (formerly Florida Power Corporation (d/b/a Progress Energy Florida, Inc.)) Registration Statement on Form S-3 filed on November 18, 2008, File No. 333-155418). Original Indenture (Unsecured Debt Securities) between Duke Energy Ohio, Inc. (formerly The Cincinnati Gas & Electric Company) and The Bank of New York Mellon Trust Company, N.A., as Successor Trustee, dated as of May 15, 1995 (incorporated by reference to Exhibit 3 to registrant’s Form 8-A filed on July 27, 1995, File No. 1-1232). First Supplemental Indenture, dated as of June 1, 1995 (incorporated by reference to Exhibit 4 B to Duke Energy Ohio, Inc.’s (formerly The Cincinnati Gas & Electric Company) Quarterly Report on Form 10-Q for the quarter ended June 30, 1995, filed on August 11, 1995, File No. 1-1232). Seventh Supplemental Indenture, dated as of June 15, 2003 (incorporated by reference to Exhibit 4.1 to Duke Energy Ohio, Inc.’s (formerly The Cincinnati Gas & Electric Company) Quarterly Report on Form 10-Q for the quarter ended June 30, 2003, filed on August 13, 2003, File No. 1-1232). Original Indenture (First Mortgage Bonds) between Duke Energy Ohio, Inc. (formerly The Cincinnati Gas & Electric Company) and The Bank of New York Mellon Trust Company, N.A., as Successor Trustee, dated as of August 1, 1936 (incorporated by reference to an exhibit to registrant’s Registration Statement No. 2-2374). Fortieth Supplemental Indenture, dated as of March 23, 2009 (incorporated by reference to Exhibit 4.1 to Duke Energy Ohio, Inc.’s (formerly The Cincinnati Gas & Electric Company) Current Report on Form 8-K filed on March 24, 2009, File No. 1-1232). Forty-second Supplemental Indenture, dated as of September 6, 2013 (incorporated by reference to Exhibit 4.1 to Duke Energy Ohio, Inc.’s (formerly The Cincinnati Gas & Electric Company) Current Report on Form 8-K filed on September 6, 2013, File No. 1-1232). Forty-fourth Supplemental Indenture, dated as of June 23, 2016 (incorporated by reference to Exhibit 4.1 registrant’s Current Report on Form 8-K filed on June 23, 2016, File No. 1-1232). Forty-fifth Supplemental Indenture, dated as of March 27, 2017 (incorporated by reference to Exhibit 4.1 to registrant’s Current Report on Form 8-K filed on March 27,2017, File No. 1-01232). Forty-sixth Supplemental Indenture, dated as of January 8, 2019 (incorporated by reference to Exhibit 4.1 to registrant’s Current Report on Form 8-K filed on January 8, 2019, File No. 1-1232). Forty-seventh Supplemental Indenture, dated as of May 21, 2020 (incorporated by reference to Exhibit 4.1 to registrant’s Current Report on Form 8-K filed on May 21, 2020, File No. 1-1232). Indenture between Duke Energy Indiana, LLC (formerly PSI Energy, Inc.) and The Bank of New York Mellon Trust Company, N.A., as Successor Trustee, dated as of November 15, 1996 (incorporated by reference to Exhibit 4(v) to the Cinergy Corp. Form 10-K for the year ended December 31, 1996, filed on March 27, 1997, File No. 1-11377). Third Supplemental Indenture, dated as of March 15, 1998 (incorporated by reference to Exhibit 4-w to Cinergy Corp.’s Annual Report on Form 10-K for the year ended December 31, 1997, filed on March 27, 1998, File No. 1-11377). Duke Energy Carolinas Duke Energy Progress Energy Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana Piedmont X X X X X X X X X X X X X X E-14 PART IVExhibit Number 4.12.2 4.12.3 4.12.4 4.13 4.13.1 4.13.2 4.13.3 4.13.4 4.13.5 4.13.6 4.13.7 4.13.8 4.13.9 4.13.10 4.13.11 4.13.12 4.13.13 Duke Energy Carolinas Duke Energy Progress Energy Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana Piedmont Eighth Supplemental Indenture, dated as of September 23, 2003 (incorporated by reference to Exhibit 4.2 to Duke Energy Indiana, LLC’s (formerly PSI Energy, Inc.) Quarterly Report on Form 10-Q for the quarter ended September 30, 2003, filed on November 13, 2003, File No. 1-3543). Ninth Supplemental Indenture, dated as of October 21, 2005 (incorporated by reference to Exhibit 4.7.3 to Duke Energy Indiana, LLC’s (formerly PSI Energy, Inc.) Registration Statement on Form S-3 filed on September 29, 2010, File No. 333-169633). Tenth Supplemental Indenture, dated as of June 9, 2006 (incorporated by reference to Exhibit 4.1 to Duke Energy Indiana, LLC’s (formerly PSI Energy, Inc.) Current Report on Form 8-K filed on June 15, 2006, File No. 1-3543). Original Indenture (First Mortgage Bonds) between Duke Energy Indiana, LLC (formerly PSI Energy, Inc.) and Deutsche Bank National Trust Company, as Successor Trustee, dated as of September 1, 1939, (filed as an exhibit in File No. 70-258). Tenth Supplemental Indenture, dated as of July 1, 1952, (filed as an exhibit in File No. 2-9687). Twenty-third Supplemental Indenture, dated as of January 1, 1977, (filed as an exhibit in File No. 2-57828). Twenty-fifth Supplemental Indenture, dated as of September 1, 1978, (filed as an exhibit in File No. 2-62543). Twenty-sixth Supplemental Indenture, dated as of September 1, 1978, (filed as an exhibit in File No. 2-62543). Thirtieth Supplemental Indenture, dated as of August 1, 1980, (filed as an exhibit in File No. 2-68562). Thirty-fifth Supplemental Indenture, dated as of March 30, 1984, (filed as an exhibit to registrant’s Annual Report on Form 10-K for the year ended December 31, 1984, File No. 1-3543). Forty-sixth Supplemental Indenture, dated as of June 1, 1990, (filed as an exhibit to registrant’s Annual Report on Form 10-K for the year ended December 31, 1991, File No. 1-3543). Forty-seventh Supplemental Indenture, dated as of July 15, 1991, (filed as an exhibit to registrant’s Annual Report on Form 10-K for the year ended December 31, 1991, File No. 1-3543). Forty-eighth Supplemental Indenture, dated as of July 15, 1992, (filed as an exhibit to registrant’s Annual Report on Form 10-K for the year ended December 31, 1992, File No. 1-3543). Fifty-second Supplemental Indenture, dated as of April 30, 1999 (incorporated by reference to Exhibit 4 to Duke Energy Indiana, LLC’s (formerly PSI Energy, Inc.) Quarterly Report on Form 10-Q for the quarter ended March 31, 1999, filed on May 13, 1999, File No. 1-3543). Fifty-seventh Supplemental Indenture, dated as of August 21, 2008 (incorporated by reference to Exhibit 4.1 to Duke Energy Indiana, LLC’s (formerly PSI Energy, Inc.) Current Report Form 8-K filed on August 21, 2008, File No. 1-3543). Fifty-eighth Supplemental Indenture, dated as of December 19, 2008 (incorporated by reference to Exhibit 4.8.12 to Duke Energy Indiana, LLC’s (formerly PSI Energy, Inc.) Registration Statement on Form S-3 filed on September 29, 2010, File No. 333-169633-02). Fifty-ninth Supplemental Indenture, dated as of March 23, 2009 (incorporated by reference to Exhibit 4.1 to Duke Energy Indiana, LLC’s (formerly PSI Energy, Inc.) Current Report on Form 8-K filed on March 24, 2009, File No. 1-3543). E-15 X X X X X X X X X X X X X X X X X PART IVExhibit Number 4.13.14 4.13.15 4.13.16 4.13.17 4.13.18 4.13.19 4.13.20 4.13.21 4.13.22 4.13.23 4.13.24 4.14 4.15 Sixtieth Supplemental Indenture, dated as of June 1, 2009 (incorporated by reference to Exhibit 4.8.14 to Duke Energy Indiana, LLC’s (formerly PSI Energy, Inc.) Registration Statement on Form S-3 filed on September 29, 2010, File No. 333-169633-02). Sixty-first Supplemental Indenture, dated as of October 1, 2009 (incorporated by reference to Exhibit 4.8.15 to Duke Energy Indiana, LLC’s (formerly PSI Energy, Inc.) Registration Statement on Form S-3 filed on September 29, 2010, File No. 333-169633-02). Sixty-second Supplemental Indenture, dated as of July 9, 2010 (incorporated by reference to Exhibit 4.1 to Duke Energy Indiana, LLC’s (formerly PSI Energy, Inc.) Current Report on Form 8-K filed on July 9, 2010, File No. 1-3543). Sixty-third Supplemental Indenture, dated as of September 23, 2010 (incorporated by reference to Exhibit 4.8.17 to Duke Energy Indiana, LLC’s (formerly PSI Energy, Inc.) Registration Statement on Form S-3 filed on September 29, 2010, File No. 333-169633-02). Sixty-fourth Supplemental Indenture, dated as of December 1, 2011 (incorporated by reference to Exhibit 4(d)(2)(xviii) to Duke Energy Indiana, LLC’s (formerly PSI Energy, Inc.) Registration Statement on Form S-3 filed on September 30, 2013, File No. 333-191462-03). Sixty-fifth Supplemental Indenture, dated as of March 15, 2012 (incorporated by reference to Exhibit 4.1 to Duke Energy Indiana, LLC’s (formerly PSI Energy, Inc.) Current Report on Form 8-K filed on March 15, 2012, File No. 1-3543). Sixty-sixth Supplemental Indenture, dated as of July 11, 2013 (incorporated by reference to Exhibit 4.1 to Duke Energy Indiana, LLC’s (formerly PSI Energy, Inc.) Current Report on Form 8-K filed on July 11, 2013, File No. 1-3543). Sixty-seventh Supplemental Indenture, dated as of January 1, 2016, between Duke Energy Indiana, Inc. and Deutsche Bank National Trust Company, as Trustee, supplementing and amending the Indenture of Mortgage or Deed of Trust, dated September 1, 1939, between Duke Energy Indiana, Inc. and Deutsche Bank National Trust Company, as Trustee (incorporated by reference to Exhibit 4.2 to Duke Energy Indiana, LLC’s (formerly PSI Energy, Inc.) Quarterly Report on Form 10-Q for the quarter ended March 31, 2016, filed on May 5, 2016, File No. 1-3543). Sixty-eighth Supplemental Indenture, dated as of May 12, 2016 (incorporated by reference to Exhibit 4.1 to registrant’s Current Report on Form 8-K filed on May 12, 2016, File No. 1-3543). Sixty-ninth Supplemental Indenture, dated as of September 27, 2019 (incorporated by reference to Exhibit 4.1 to registrant’s Current Report on Form 8-K filed on September 27, 2019, File No. 1-3543). Seventieth Supplemental Indenture, dated as of March 12, 2020 (incorporated by reference to Exhibit 4.1 to registrant’s Current Report on Form 8-K filed on March 12, 2020, File No. 1-3543). Repayment Agreement between Duke Energy Ohio, Inc. (formerly The Cincinnati Gas & Electric Company) and The Dayton Power and Light Company, dated as of December 23, 1992, (filed with registrant’s Annual Report on Form 10-K for the year ended December 31, 1992, File No. 1-1232). Unsecured Promissory Note between Duke Energy Indiana, LLC (formerly PSI Energy, Inc.) and the Rural Utilities Service, dated as of October 14, 1998 (incorporated by reference to Exhibit 4 to registrant’s Annual Report on Form 10-K for the year ended December 31, 1998, filed on March 8, 1999, File No. 1-3543). Duke Energy Carolinas Duke Energy Progress Energy Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana Piedmont X X X X X X X X X X X X X E-16 PART IVExhibit Number 4.16 4.17 4.18 4.19 4.20 4.21 4.22 4.23 4.24 4.25 4.26 4.26.1 4.26.2 4.26.3 6.302% Subordinated Note between Duke Energy Indiana, LLC (formerly PSI Energy, Inc.) and Cinergy Corp., dated as of February 5, 2003 (incorporated by reference to Exhibit 4(yyy) to registrant’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2003, filed on May 12,2003, File No. 1-3543). 6.403% Subordinated Note between Duke Energy Indiana, LLC (formerly PSI Energy, Inc.) and Cinergy Corp., dated as of February 5, 2003 (incorporated by reference to Exhibit 4(zzz) to registrant’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2003, filed on May 12, 2003, File No. 1-3543). Contingent Value Obligation Agreement between Progress Energy, Inc. (formerly CP&L Energy, Inc.) and The Chase Manhattan Bank, as Trustee, dated as of November 30, 2000 (incorporated by reference to Exhibit 4.1 to registrant’s Current Report on Form 8-K filed on December 1, 2000, File No. 1-3382). Form of 3.47% Series A Senior Notes due July 16, 2027 (incorporated by reference to Exhibit 4.1 to registrant’s Current Report on Form 8-K filed on March 29, 2012, File No. 1-06196). Form of 3.57% Series B Senior Notes due July 16, 2027 (incorporated by reference to Exhibit 4.2 to registrant’s Current Report on Form 8-K filed on March 29, 2012, File No. 1-06196). Form of 4.65% Senior Notes due 2043 (incorporated by reference to Exhibit 4.2 to registrant’s Current Report on Form 8-K filed on August 1, 2013, File No. 1-06196). Form of 4.10% Senior Notes due 2034 (incorporated by reference to Exhibit 4.2 to registrant’s Current Report on Form 8-K filed on September 18, 2014, File No. 1-06196). Form of 3.60% Senior Notes due 2025 (incorporated by reference to Exhibit 4.2 to registrant’s Current Report on Form 8-K filed on September 14, 2015, File No. 1-06196). Form of 3.64% Senior Notes due 2046 (incorporated by reference to Exhibit 4.2 to registrant’s Current Report on Form 8-K filed on July 28, 2016, File No. 1-06196). Form of 4.24% Series B Senior Notes due June 6, 2021 (incorporated by reference to Exhibit 4.2 to registrant’s Current Report on Form 8-K filed on May 12, 2011, File No. 1-06196). Indenture, dated as of April 1, 1993, between Piedmont and The Bank of New York Mellon Trust Company, N.A. (as successor to Citibank, N.A.), Trustee (incorporated by reference to Exhibit 4.1 to registrant’s Registration Statement on Form S-3 filed on May 16, 1995, File No. 33-59369). Second Supplemental Indenture, dated as of June 15, 2003, between Piedmont and Citibank, N.A., Trustee (incorporated by reference to Exhibit 4.3 to registrant’s Registration Statement on Form S-3 filed on June 19, 2003, File No. 333-106268). Fourth Supplemental Indenture, dated as of May 6, 2011, between Piedmont Natural Gas Company, Inc. and The Bank of New York Mellon Trust Company, N.A., as trustee (incorporated by reference to Exhibit 4.2 to registrant’s Registration Statement on Form S-3-ASR filed on July 7, 2011, File No. 333-175386). Fifth Supplemental Indenture, dated August 1, 2013, between the Company and The Bank of New York Mellon Trust Company, N.A. (incorporated by reference to Exhibit 4.1 to registrant’s Current Report on Form 8-K filed on August 1, 2013, File No. 1-06196). Duke Energy Carolinas Duke Energy Progress Energy Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana Piedmont X X X X X X X X X X X X X X E-17 PART IVExhibit Number 4.26.4 4.26.5 4.26.6 4.26.7 4.26.8 4.26.9 4.26.10 4.27 4.28 4.29 4.30 4.31 4.32 4.33 4.34 Duke Energy Carolinas Duke Energy Progress Energy Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana Piedmont Sixth Supplemental Indenture, dated September 18, 2014, between the Company and The Bank of New York Mellon Trust Company, N.A. (incorporated by reference to Exhibit 4.1 to registrant’s Current Report on Form 8-K filed on September 18, 2014, File No. 1-06196). Seventh Supplemental Indenture, dated September 14, 2015, between the Company and The Bank of New York Mellon Trust Company, N.A. (incorporated by reference to Exhibit 4.1 to registrant’s Current Report on Form 8-K filed on September 14, 2015, File No. 1-06196). Eighth Supplemental Indenture, dated July 28, 2016, between the Company and The Bank of New York Mellon Trust Company, N.A. (incorporated by reference to Exhibit 4.1 to registrant’s Current Report on Form 8-K filed on July 28, 2016, File No. 1-06196). Ninth Supplemental Indenture, dated as of May 24, 2019 (incorporated by reference to Exhibit 4.1 to registrant’s Current Report on Form 8-K filed on May 24, 2019, File No. 1-6196). Tenth Supplemental Indenture, dated as of May 21, 2020 (incorporated by reference to Exhibit 4.1 to registrant’s Current Report on Form 8-K filed on May 21, 2020, File No. 1-6196). Eleventh Supplemental Indenture, dated as of March 11, 2021 (incorporated by reference to Exhibit 4.1 to registrant’s Current Report on Form 8-K filed on March 11, 2021, File No. 1-6196). Twelfth Supplemental Indenture dated as of May 13, 2022 between Piedmont Natural Gas Company, Inc. 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 May 13, 2022, File No. 1-6196). Medium-Term Note, Series A, dated as of October 6, 1993 (incorporated by reference to Exhibit 4.8 to registrant’s Annual Report on Form 10-K for the year ended October 31, 1993, File No. 1-06196). Medium-Term Note, Series A, dated as of September 19, 1994 (incorporated by reference to Exhibit 4.9 to registrant’s Annual Report on Form 10-K for the year ended October 31, 1994, File No. 1-06196). Form of 6% Medium-Term Note, Series E, dated as of December 19, 2003 (incorporated by reference to Exhibit 99.2 to registrant’s Current Report on Form 8-K filed on December 23, 2003, File No. 1-06196). Form of Master Global Note (incorporated by reference to Exhibit 4.4 to registrant’s Registration Statement on Form S-3 filed on April 30, 1997, File No. 333-26161). Pricing Supplement of Medium-Term Notes, Series B, dated October 3, 1995 (incorporated by reference to Exhibit 4.10 to registrant’s Annual Report on Form 10-K for the year ended October 31, 1995, File No. 1-06196). Pricing Supplement of Medium-Term Notes, Series B, dated October 4, 1996 (incorporated by reference to Exhibit 4.11 to registrant’s Annual Report on Form 10-K for the year ended October 31, 1996, File No. 1-06196). Pricing Supplement of Medium-Term Notes, Series C, dated September 15, 1999 (incorporated by reference to Rule 424(b)(3) Pricing Supplement to Form S-3 Registration Statement Nos. 33-59369 and 333-26161). Agreement of Resignation, Appointment and Acceptance dated as of March 29, 2007, by and among Piedmont Natural Gas Company, Inc., Citibank, N.A., and The Bank of New York Trust Company, N.A. (incorporated by reference to Exhibit 4.1 to registrant’s Quarterly Report on Form 10-Q for the quarter ended April 30, 2007, filed on June 8, 2007, File No. 1-06196). E-18 X X X X X X X X X X X X X X X PART IVExhibit Number 10.1 10.2 10.3 10.4 10.5 10.6 10.7 10.8 10.9 10.10 10.11** Duke Energy Carolinas Duke Energy Progress Energy Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana Piedmont X X X X Agreements with Piedmont Electric Membership Corporation, Rutherford Electric Membership Corporation and Blue Ridge Electric Membership Corporation (incorporated by reference to Exhibit 10.15 to Duke Energy Corporation’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2006, filed on August 9, 2006, File No. 1-32853). Asset Purchase Agreement between Saluda River Electric Cooperative, Inc., as Seller, and Duke Energy Carolinas, LLC, as Purchaser, dated as of December 20, 2006 (incorporated by reference to Exhibit 10.1 to registrant’s Current Report on Form 8-K filed on December 27, 2006, File No. 1-4928). Settlement between Duke Energy Corporation, Duke Energy Carolinas, LLC and the U.S. Department of Justice resolving Duke Energy’s used nuclear fuel litigation against the U.S. Department of Energy, dated as of March 6, 2007 (incorporated by reference to Item 8.01 to registrant’s Current Report on Form 8-K filed on March 12, 2007, File No. 1-4928). Letter Agreement between Georgia Natural Gas Company and Piedmont Energy Company dated February 12, 2016 (incorporated by reference to Exhibit 10.1 to registrant’s Current Report on Form 8-K filed on February 18, 2016, File No. 1-06196). Assignment of Membership Interests dated as of October 3, 2016 between Piedmont ACP Company, LLC and Dominion Atlantic Coast Pipeline, LLC, (incorporated by reference to Exhibit 10.1 to registrant’s Current Report on Form 8-K filed on October 7, 2016, File No. 1-06196). Agreements between Piedmont Electric Membership Corporation, Rutherford Electric Membership Corporation and Blue Ridge Electric Membership Corporation (incorporated by reference to Exhibit 10.15 to Duke Energy Corporation’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2006, filed on August 9, 2006, File No. 1-32853). Conveyance and Assignment Agreement, dated as of October 3, 2016, by and between Piedmont Energy Company and Georgia Natural Gas Company (incorporated by reference to Exhibit 10.1 to registrant’s Current Report on Form 8-K filed on October 3, 2016, File No. 1-06196). Engineering, Procurement and Construction Management Agreement between Duke Energy Indiana, LLC (formerly PSI Energy, Inc.) and Bechtel Power Corporation, dated as of December 15, 2008 (incorporated by reference to Exhibit 10.16 to registrant’s Annual Report on Form 10-K for the year ended December 31, 2008, filed on March 13, 2009, File No. 1-3543). (Portions of the exhibit have been omitted and filed separately with the Securities and Exchange Commission pursuant to a request for confidential treatment pursuant to Rule 24b-2 under the Securities Exchange Act of 1934, as amended.) Formation and Sale Agreement between Duke Ventures, LLC, Crescent Resources, LLC, Morgan Stanley Real Estate Fund V U.S. L.P., Morgan Stanley Real Estate Fund V Special U.S., L.P., Morgan Stanley Real Estate Investors V U.S., L.P., MSP Real Estate Fund V, L.P., and Morgan Stanley Strategic Investments, Inc., dated as of September 7, 2006 (incorporated by reference to Exhibit 10.3 to Duke Energy Corporation’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2006, filed on November 9, 2006, File No. 1-32853). Operating Agreement of Pioneer Transmission, LLC (incorporated by reference to Exhibit 10.1 to Duke Energy Corporation’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2008, filed on November 7, 2008, File No. 1-32853). Amended and Restated Duke Energy Corporation Directors’ Saving Plan, dated as of January 1, 2014 (incorporated by reference to Exhibit 10.32 to Duke Energy Corporation’s Annual Report on Form 10-K for the year ended December 31, 2013, filed on February 28, 2014, File No. 1-32853). X X X E-19 X X X X PART IVExhibit Number 10.12** 10.13 10.14** 10.15 10.15.1 10.15.2 10.15.3 10.15.4 Duke Energy Carolinas Duke Energy Progress Energy Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana Piedmont X X X X X X X X Amendment to Duke Energy Corporation Directors’ Savings Plan, effective as of December 16, 2021 (incorporated by reference to Exhibit 10.12 to Duke Energy Corporation’s Annual Report on Form 10-K for the year ended December 31, 2021, filed on February 24, 2022, File No. 1-32853). Engineering, Procurement and Construction Management Agreement between Duke Energy Indiana, LLC (formerly PSI Energy, Inc.) and Bechtel Power Corporation, dated as of December 15, 2008 (incorporated by reference to Item 1.01 to registrant’s Current Report on Form 8-K filed on December 19, 2008, File Nos. 1-32853 and 1-3543). (Portions of the exhibit have been omitted and filed separately with the Securities and Exchange Commission pursuant to a request for confidential treatment pursuant to Rule 24b-2 under the Securities Exchange Act of 1934, as amended.) Duke Energy Corporation Executive Severance Plan (incorporated by reference to Exhibit 10.1 to registrant’s Current Report on Form 8-K filed on January 13, 2011, File No. 1-32853). $6,000,000,000 Five-Year Credit Agreement between Duke Energy Corporation, Duke Energy Carolinas, LLC, Duke Energy Ohio, Inc., Duke Energy Indiana, LLC, Duke Energy Kentucky, Inc., Carolina Power and Light Company d/b/a Duke Energy Progress, Inc. and Florida Power Corporation, d/b/a Duke Energy Florida, Inc., as Borrowers, the lenders listed therein, Wells Fargo Bank, National Association, as Administrative Agent, Bank of America, N.A. and The Royal Bank of Scotland plc, as Co-Syndication Agents and Bank of China, New York Branch, Barclays Bank PLC, Citibank, N.A., Credit Suisse AG, Cayman Islands Branch, Industrial and Commercial Bank of China Limited, New York Branch, JPMorgan Chase Bank, N.A. and UBS Securities LLC, as Co-Documentation Agents, dated as of November 18, 2011 (incorporated by reference to Exhibit 10.1 to registrant’s Current Report on Form 8-K filed on November 25, 2011, File Nos. 1-32853, 1-4928, 1-1232 and 1-3543). Amendment No. 1 and Consent between Duke Energy Corporation, Duke Energy Carolinas, LLC, Duke Energy Ohio, Inc., Duke Energy Indiana, LLC, Duke Energy Kentucky, Inc., Duke Energy Progress, Inc., Duke Energy Florida, Inc., and Wells Fargo Bank, National Association, dated as of December 18, 2013 (incorporated by reference to Exhibit 10.1 to registrant’s Current Report on Form 8-K filed on December 23, 2013, File Nos. 1-32853, 1-4928, 1-3382, 1-3274, 1-1232 and 1-3543). Amendment No. 2 and Consent between Duke Energy Corporation, Duke Energy Carolinas, LLC, Duke Energy Ohio, Inc., Duke Energy Indiana, LLC, Duke Energy Kentucky, Inc., Duke Energy Progress, Inc., and Duke Energy Florida, Inc., the Lenders party hereto, the issuing Lenders party hereto, Wells Fargo Bank, National Association, as Administrative Agent and Swingline Lender, dated as of January 30, 2015 (incorporated by reference to Exhibit 10.1 of registrant’s Current Report on Form 8-K filed on February 5, 2015, File Nos. 1-32853, 1-4928, 1-1232, 1-3543, 1-3382 and 1-3274). Amendment No. 3 and Consent, dated as of March 16, 2017, among the registrants, the Lenders party thereto, the issuing Lenders party thereto, and Wells Fargo Bank, National Association, as Administrative Agent and Swingline Lender (incorporated by reference to Exhibit 10.1 to registrants’ Current Report on Form 8-K filed on March 17, 2017, File Nos. 1-32853, 1-04928, 1-03382, 1-03274, 1-01232, 1-03543, 1-06196). Amendment No. 4 and Consent, dated as of March 18, 2019, 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, the Issuing Lenders party thereto, and Wells Fargo Bank, National Association, as Administrative Agent and Swingline Lender (incorporated by reference to Exhibit 10.1 to registrants’ Current Report on Form 8-K filed on March 21, 2019, File Nos. 1-32853. 1-4928, 1-3382, 1-3274, 1-1232, 1-3543, 1-6196). E-20 X X X X X X X X X X X X X X X X X X X X X X X X X X PART IVDuke Energy Carolinas X Progress Energy Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana Piedmont X X X X X X X X X Exhibit Number 10.15.5 10.16** 10.16.1** 10.17** 10.18** 10.19** 10.20** Amendment No. 5 and Consent, dated as of March 16, 2020, among registrants’, the Lenders party thereto, the Issuing Lenders party thereto, and Wells Fargo Bank, N.A., as Administrative Agent, and Swingline Lender (incorporated by reference to Exhibit 10.1 to registrants’ Current Report on Form 8-K filed on March 17, 2020, File Nos. 1-32853, 1-4928, 1-3382, 1-3274, 1-1232, 1-3543, 1-6196). Duke Energy Corporation 2015 Long-Term Incentive Plan (incorporated by reference to Appendix C to registrant’s DEF 14A filed on March 26, 2015, File No. 1-32853). Amendment to Duke Energy Corporation 2015 Long-Term Incentive Plan (incorporated by reference to Exhibit 10.16.1 to Duke Energy Corporation’s Annual Report on Form 10-K for the year ended December 31, 2018, filed on February 28, 2019, File No. 1-32853). Restricted Stock Unit Award Agreement (incorporated by reference to Exhibit 10.4 to registrant’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2017 filed on May 9, 2017, File No. 1-32853). Restricted Stock Unit Award Agreement (incorporated by reference to Exhibit 10.24 to Duke Energy Corporation’s Annual Report on Form 10-K for the year ended December 31, 2017, filed on February 21, 2018, File No. 1-32853). Restricted Stock Unit Award Agreement (incorporated by reference to Exhibit 10.3 to Duke Energy Corporation’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2019, filed on May 9, 2019, File No. 1-32853). Restricted Stock Unit Award Agreement (incorporated by reference to Exhibit 10.4 to Duke Energy Corporation’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2022, filed on May 9, 2022, File No. 1-32853). *10.21** Restricted Stock Unit Award Agreement 10.22** 10.23** Performance Share Award Agreement (incorporated by reference to Exhibit 10.2 to Duke Energy Corporation’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2019, filed on May 9, 2019, File No. 1-32853). Performance Share Award Agreement (incorporated by reference to Exhibit 10.4 to Duke Energy Corporation’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2020, filed on May 12, 2020, File No. 1-32853). *10.24** Performance Share Award Agreement 10.25 10.26 10.27 10.28 Settlement Agreement between Duke Energy Corporation, the North Carolina Utilities Commission Staff and the North Carolina Public Staff, dated as of November 28, 2012 (incorporated by reference to Exhibit 10.1 to registrant’s Current Report on Form 8-K filed on November 29, 2012, File No. 1-32853). Settlement Agreement between Duke Energy Corporation and the North Carolina Attorney General, dated as of December 3, 2012 (incorporated by reference Item 7.01 to registrant’s Current Report on Form 8-K filed on December 3, 2012, File No. 1-32853). Settlement Agreement between Duke Energy Carolinas, LLC, Duke Energy Progress, LLC, and The North Carolina Department of Environmental Quality, dated as of December 31, 2019 (incorporated by reference to Exhibit 10.1 to registrants’ Current Report on Form 8-K filed on January 2, 2020, File Nos. 1-4928, 1-3382). Duke Energy Carolinas Summary of Partial Settlement in North Carolina Rate Case (incorporated by reference to Exhibit 99.1 to registrant’s Current Report on Form 8-K filed on March 26, 2020, File Nos. 1-32853, 1-4928, 1-3382). Duke Energy X X X X X X X X X X X X X X E-21 PART IVDuke Energy Carolinas X Duke Energy X X X X X X Exhibit Number 10.29 10.30 10.31 10.32** 10.33** 10.33.1** 10.34 10.35 10.36 10.37 Coal Combustion Residuals Settlement Agreement between registrants and the Public Staff-North Carolina Utilities Commission, the North Carolina Attorney General’s Office, and the Sierra Club, dated as of January 22, 2021 (incorporated by reference to Exhibit 10.1 to registrants’ Quarterly Report on Form 10-Q for the quarter ended March 31, 2021, filed on May 10, 2021, File Nos. 1-32853, 1-4928, 1-3382). Investment Agreement by and among Cinergy Corp., Duke Energy Indiana HoldCo, LLC, Duke Energy Corporation, and Epson Investment PTE. LTD,. dated as of January 28, 2021 (incorporated by reference to Exhibit 10.2 to registrants’ Quarterly Report on Form 10-Q for the quarter ended March 31, 2021, filed on May 10, 2021, File Nos. 1-32853, 1-3543). Cooperation Agreement, dated as of November 13, 2021, by and among Duke Energy Corporation, Elliott Investment Management L.P., and Elliott International, L.P.(incorporated by reference to registrant’s Current Report on Form 8-K filed on November 15, 2021, File No. 1-32853). Form of Change-in-Control Agreement (incorporated by reference to Exhibit 10.58 to Duke Energy Corporation’s Annual Report on Form 10-K for the year ended December 31, 2012, filed on March 1, 2013, File No. 1-32853). Amended and Restated Duke Energy Corporation Executive Cash Balance Plan, dated as of January 1, 2014 (incorporated by reference to Exhibit 10.52 to Duke Energy Corporation’s Annual Report on Form 10-K for the year ended December 31, 2013, filed on February 28, 2014, File No. 1-32852). Amended and Restated Duke Energy Corporation Executive Cash Balance Plan, dated as of September 30, 2020 (incorporated by reference to Exhibit 10.1 to registrant’s Current Report on Form 8-K filed on September 25, 2020, File No. 1-32853). Purchase, Construction and Ownership Agreement, dated as of July 30, 1981, between Duke Energy Progress, Inc. (formerly Carolina Power & Light Company) and North Carolina Municipal Power Agency Number 3 and Exhibits, together with resolution, dated as of December 16, 1981, changing name to North Carolina Eastern Municipal Power Agency, amending letter, dated as of February 18, 1982, and amendment, dated as of February 24, 1982 (incorporated by reference to Exhibit 10(a) to registrant’s File No. 33-25560). Operating and Fuel Agreement, dated as of July 30, 1981, between Duke Energy Progress, Inc. (formerly Carolina Power & Light Company) and North Carolina Municipal Power Agency Number 3 and Exhibits, together with resolution, dated as of December 16, 1981, changing name to North Carolina Eastern Municipal Power Agency, amending letters, dated as of August 21, 1981, and December 15, 1981, and amendment, dated as of February 24, 1982 (incorporated by reference to Exhibit 10(b) to registrant’s File No. 33-25560). Power Coordination Agreement, dated as of July 30, 1981, between Duke Energy Progress, Inc. (formerly Carolina Power & Light Company) and North Carolina Municipal Power Agency Number 3 and Exhibits, together with resolution, dated as of December 16, 1981, changing name to North Carolina Eastern Municipal Power Agency and amending letter, dated as of January 29, 1982 (incorporated by reference to Exhibit 10(c) to registrant’s File No. 33-25560). Amendment, dated as of December 16, 1982, to Purchase, Construction and Ownership Agreement, dated as of July 30, 1981, between Duke Energy Progress, Inc. (formerly Carolina Power & Light Company) and North Carolina Eastern Municipal Power Agency (incorporated by reference to Exhibit 10(d) to registrant’s File No. 33-25560). E-22 Progress Energy Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana Piedmont X X X X X X PART IVDuke Energy Carolinas Duke Energy Progress Energy X Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana Piedmont X X X Exhibit Number 10.38 10.39 10.40** 10.40.1** 10.41** 10.42** 10.43** 10.44** Precedent and Related Agreements between Duke Energy Florida, Inc. (formerly Florida Power Corporation d/b/a Progress Energy Florida, Inc. (“PEF”)), Southern Natural Gas Company, Florida Gas Transmission Company (“FGT”), and BG LNG Services, LLC (“BG”), including: a) Precedent Agreement between Southern Natural Gas Company and PEF, dated as of December 2, 2004; b) Gas Sale and Purchase Contract between BG and PEF, dated as of December 1, 2004; c) Interim Firm Transportation Service Agreement by and between FGT and PEF, dated as of December 2, 2004; d) Letter Agreement between FGT and PEF, dated as of December 2, 2004, and Firm Transportation Service Agreement between FGT and PEF to be entered into upon satisfaction of certain conditions precedent; e) Discount Agreement between FGT and PEF, dated as of December 2, 2004; f) Amendment to Gas Sale and Purchase Contract between BG and PEF, dated as of January 28, 2005; and g) Letter Agreement between FGT and PEF, dated as of January 31, 2005 (incorporated by reference to Exhibit 10.1 to registrant’s Current Report on Form 8-K/A filed on March 15, 2005, File Nos. 1-15929 and 1-3274). (Portions of the exhibit have been omitted and filed separately with the Securities and Exchange Commission pursuant to a request for confidential treatment pursuant to Rule 24b-2 under the Securities Exchange Act of 1934, as amended.) Engineering, Procurement and Construction Agreement between Duke Energy Florida, Inc. (formerly Florida Power Corporation d/b/a/ Progress Energy Florida, Inc.), as owner, and a consortium consisting of Westinghouse Electric Company LLC and Stone & Webster, Inc., as contractor, for a two-unit AP1000 Nuclear Power Plant, dated as of December 31, 2008 (incorporated by reference to Exhibit 10.1 to registrant’s Current Report on Form 8-K filed on March 2, 2009, File Nos. 1-15929 and 1-3274). (Portions of the exhibit have been omitted and filed separately with the Securities and Exchange Commission pursuant to a request for confidential treatment pursuant to Rule 24b-2 under the Securities Exchange Act of 1934, as amended.) Employment Agreement between Duke Energy Corporation and Lynn J. Good, dated as of June 17, 2013 (incorporated by reference to Exhibit 10.1 to Duke Energy Corporation’s Current Report on Form 8-K filed on June 18, 2013, File No. 1-32853). Amendment to Employment Agreement between Duke Energy Corporation and Lynn J. Good, dated as of June 25, 2015 (incorporated by reference to Exhibit 10.1 to Duke Energy Corporation’s Current Report on Form 8-K filed on June 29, 2015, File No. 1-32853). Amended and Restated Duke Energy Corporation Executive Short-Term Incentive Plan, 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). Duke Energy Corporation 2017 Director Compensation Program Summary (incorporated by reference to Exhibit 10.3 to Duke Energy Corporation’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2017, filed on August 3, 2017, File No. 1-32853). Duke Energy Corporation 2022 Director Compensation Program Summary (incorporated by reference to Exhibit 10.5 to Duke Energy Corporation’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2022, filed on May 9, 2022, File No. 1-32853). Amended and Restated Duke Energy Corporation Executive Savings Plan, dated as of January 1, 2014 (incorporated by reference to Exhibit 10.82 to Duke Energy Corporation’s Annual Report on Form 10-K for the year ended December 31, 2013, filed on February 28, 2014, File No. 1-32853). 10.44.1** Amendment to Duke Energy Corporation Executive Savings Plan, dated as of January 1, 2014 (incorporated by reference to Exhibit 10.1 to Duke Energy Corporation’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2017, filed on November 3, 2017, File No. 1-32853). E-23 X X X X X X X PART IVExhibit Number 10.44.2** 10.45** 10.46** 10.47 10.48 10.49 10.50 10.51 10.52 10.53 10.54 Duke Energy Carolinas Duke Energy Progress Energy Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana Piedmont X X Amendment to Duke Energy Corporation Executive Savings Plan, dated as of October 1, 2020 (incorporated by reference to Exhibit 10.2 to Duke Energy Corporation’s Current Report on Form 8-K filed on September 25, 2020, File No. 1-32853). Consulting Agreement, dated as of September 22, 2021, between Duke Energy Business Services, LLC and Douglas F Esamann (incorporated by reference to Exhibit 10.1 to registrant’s Current Report on Form 8-K filed on September 27, 2021, File No. 1-32853). Retention Award Agreement (incorporated by reference to Exhibit 10.42 to Duke Energy Corporation’s Annual Report on Form 10-K for the year ended December 31, 2021, filed on February 24, 2022, File No. 1-32853). Agreement between Duke Energy SAM, LLC, Duke Energy Ohio, Inc., Duke Energy Commercial Enterprise, Inc. and Dynegy Resource I, LLC, dated as of August 21, 2014 (incorporated by reference to Exhibit 10.61 to Duke Energy Corporation’s Annual Report on Form 10-K for the year ended December 31, 2014, filed on March 2, 2015, File No. 1-32853). Asset Purchase Agreement between Duke Energy Progress, Inc. and North Carolina Eastern Municipal Power Agency, dated as of September 5, 2014 (incorporated by reference to Exhibit 10.62 to Duke Energy Corporation’s Annual Report on Form 10-K for the year ended December 31, 2014, filed on March 2, 2015, File No. 1-32853). Accelerated Stock Repurchase Program executed by Goldman, Sachs & Co., and JPMorgan Chase Bank, N.A. on April 6, 2015, under an agreement with Duke Energy Corporation (incorporated by reference to Exhibit 10.1 to Duke Energy Corporation’s Current Report on Form 8-K filed on April 6, 2015, File No. 1-32853). Plea Agreement between Duke Energy Corporation and the Court of the Eastern District of North Carolina in connection with the May 14, 2015, Dan River Grand Jury Settlement (incorporated by reference to Exhibit 10.3 to Duke Energy Corporation’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2015, filed on August 7, 2015, File No. 1-32853). Plea Agreement between Duke Energy Corporation and the Court of the Eastern District of North Carolina in connection with the May 14, 2015, Dan River Grand Jury Settlement (incorporated by reference to Exhibit 10.4 to Duke Energy Corporation’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2015, filed on August 7, 2015, File No. 1-32853). Purchase and Sale Agreement by and among Duke Energy International Group S.à.r.l., Duke Energy International Brazil Holdings S.à.r.l. and China Three Gorges (Luxembourg) Energy S.à.r.l., dated as of October 10, 2016 (incorporated by reference to Exhibit 2.1 to registrant’s Current Report on Form 8-K filed on October 13, 2016, File No. 1-32853). Purchase and Sale Agreement by and among Duke Energy Brazil Holdings II, C.V., Duke Energy International Uruguay Investments SRL, Duke Energy International Group S.à.r.l., Duke Energy International España Holdings SL, Duke Energy International Investments No. 2 Ltd., ISQ Enerlam Aggregator, L.P., and Enerlam (UK) Holdings Ltd., dated as of October 10, 2016 (incorporated by reference to Exhibit 2.2. to registrant’s Current Report on Form 8-K filed on October 13, 2016, File No. 1-32853). $1,000,000,000 Credit Agreement, dated as of June 14, 2017, among Duke Energy Corporation, the Lenders listed therein, The Bank of Nova Scotia, as Administrative Agent, PNC Bank, N.A., Sumitomo Mitsui Banking Corporation, and TD Bank, N.A., as C0-Syndication Agents, and Bank of China, New York Branch, BNP Paribas, Santander Bank, N.A. and U.S. Bank N.A., as Co-Documentation Agents (incorporated by reference to Exhibit 10.1 to registrant’s Current Report on Form 8-K filed on June 14, 2017, File No. 1-32853). X X X X X X X X X X X E-24 PART IVExhibit Number 10.55 10.55.1 10.56 10.57 10.58 10.59 10.60 10.61 $1,000,000,000 Credit Agreement, dated as of May 15, 2019, among Duke Energy Corporation, the Lenders party thereto, The Bank of Nova Scotia, as Administrative Agent, PNC Bank, N.A., Sumitomo Mitsui Banking Corporation, and TD Bank, N.A., as Co-Syndication Agents, and Bank of China, New York Branch, BNP Paribas, Santander Bank, N.A., and U.S. Bank, N.A., as Co-Documentation Agents (incorporated by reference to Exhibit 10.1 to registrant’s Current Report on Form 8-K filed on May 16, 2019, File No. 1-32853). First Amendment to $1,000,000,000 Credit Agreement, dated as of May 15, 2019, among Duke Energy Corporation, the Lenders party therein, The Bank of Nova Scotia, as Administrative Agent, PNC Bank, N.A., Sumitomo Mitsui Banking Corporation, and TD Bank, N.A., as Co-Syndication Agents, and Bank of China, New York Branch, BNP Paribas, Santander Bank, N.A., and U.S> Bank, N.A., as Co-Documentation Agents (incorporated by reference to Exhibit 10.3 to registrant’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2021, filed on May 10, 2021, File No. 1-32853). 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). $800 million Credit Agreement, dated as of October 21, 2022, among Duke Energy Florida, LLC, as Borrower, the lenders listed therein, Truist Bank, as Administrative Agent, Truist Securities, Inc., Mizuho Bank Ltd., and TD Bank, N.A., as Joint Lead Arrangers, and Truist Securities, Inc., as Sole Bookrunner (incorporated by reference to Exhibit 10.1 to registrant’s Current Report on Form 8-K filed on October 21, 2022, File No. 1-3274 $1.5 billion 364-Day Term Loan Credit Agreement, dated as of March 19, 2020, among the registrant, as Borrower, certain Lenders from time to time parties thereto, and PNC Bank, N.A., as Administrative Agent, and registrant’s borrowing of the remaining $500 million under registrant’s existing $1 billion revolving credit facility on March 17, 2020 (incorporated by reference to Exhibit 10.1 to registrant’s Current Report on Form 8-K filed on March 19, 2020, File No. 1-32853). Joinder Agreement, dated as of March 27, 2020, by and among, the registrant, each of the Incremental Lenders listed therein, and PNC Bank, N.A., as Administrative Agent (incorporated by reference to Exhibit 10.2.1 to registrant’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2020, filed on May 12, 2020, File No. 1-32853). $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). Note Purchase Agreement, dated as of May 6, 2011, among Piedmont Natural Gas Company, Inc. and the Purchasers party thereto (incorporated by reference to Exhibit 10 to registrant’s Current Report on Form 8-K filed on May 12, 2011, File No. 1-06196). Duke Energy Carolinas Duke Energy Progress Energy Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana Piedmont X X X X X X X X X X X X X X E-25 PART IVExhibit Number 10.62 10.62.1 10.62.2 10.63 10.64 10.65 10.66 10.67 10.68 10.69 Duke Energy Carolinas Duke Energy Progress Energy Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana Piedmont X X X X X X X X Amended and Restated Limited Liability Company Agreement of Constitution Pipeline Company, LLC dated April 9, 2012, by and among Williams Partners Operating LLC and Cabot Pipeline Holdings LLC (incorporated by reference to Exhibit 10.1 to registrant’s Quarterly Report on Form 10-Q for the quarter ended January 31, 2013, filed on March 6, 2013, File No. 1-06196). First Amendment to Amended and Restated Limited Liability Company Agreement of Constitution Pipeline Company, LLC, dated as of November 9, 2012, by and among Constitution Pipeline Company, LLC, Williams Partners Operating LLC, Cabot Pipeline Holdings LLC, and Piedmont Constitution Pipeline Company, LLC (incorporated by reference to Exhibit 10.2 to registrant’s Quarterly Report on Form 10-Q for the quarter ended January 31, 2013, filed on March 6, 2013, File No. 1-06196). Second Amendment to Amended and Restated Limited Liability Company Agreement of Constitution Pipeline Company, LLC, dated as of May 29, 2013, by and among Constitution Pipeline Company, LLC, Williams Partners Operating LLC, Cabot Pipeline Holdings LLC, Piedmont Constitution Pipeline Company, LLC, and Capitol Energy Ventures Corp. (incorporated by reference to Exhibit 99.1 to registrant’s Current Report on Form 8-K filed on September 4, 2013, File No. 1-06196). Second Amended and Restated Limited Liability Company Agreement of SouthStar Energy Services LLC, dated as of September 1, 2013, by and between Georgia Natural Gas Company and Piedmont Energy Company (incorporated by reference to Exhibit 10.39 to registrant’s Annual Report on Form 10-K for the year ended October 31, 2013, filed on December 23, 2013, File No. 1-06196). Limited Liability Company Agreement of Atlantic Coast Pipeline, LLC, dated as of September 2, 2014, by and between Dominion Atlantic Coast Pipeline, LLC, Duke Energy ACP, LLC, Piedmont ACP Company, LLC, and Maple Enterprise Holdings, Inc. (incorporated by reference to Exhibit 10.35 to registrant’s Annual Report on Form 10-K for the year ended October 31, 2014, filed on December 23, 2014, File No. 1-06196). Amended and Restated Limited Liability Company Operating Agreement of Duke Energy Indiana Holdco, LLC (incorporated by reference to Exhibit 10.1 to registrants’ Current Report on Form 8-K filed on September 8, 2021, File Nos. 1-32853, 1-03543). Engineering, Procurement and Construction Agreement between Duke Energy Business Services, LLC, as agent for and on behalf of Piedmont Natural Gas Company Inc. and Matrix Service, Inc., dated as of April 30, 2019 (incorporated by reference to Exhibit 10.1 to registrant’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2019, filed on August 6, 2019, File No. 1-06196). (Portions of the exhibit have been omitted for confidentiality.) Decommissioning Services Agreement between Duke Energy Florida, LLC, and ADP CR3, LLC, and ADP SF1, LLC (incorporated by reference to Exhibit 10.3 to registrant’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2019, filed on August 6, 2019, File No. 2-5293). (Portions of the exhibit have been omitted for confidentiality.) Form of Forward Sale Agreement (incorporated by reference to Exhibit 10.1 to registrant’s Current Report on Form 8-K filed on November 8, 2019, File No. 1-32853). Lease Agreement dated as of December 23, 2019, between the registrant and CGA 525 South Tryon TIC 1, LLC, a Delaware limited liability company, CGA 525 South Tryon TIC 2, LLC, a Delaware limited liability company, and CK 525 South Tryon TIC, LLC, a Delaware limited liability company (incorporated by reference to Exhibit 10.64 to registrant’s Annual Report on Form 10-K for the year ended December 31, 2019, filed on February 20, 2020, File No. 1-4928). E-26 X X X PART IVX X X X X X Exhibit Number 10.70 10.71 Construction Agency Agreement dated as of December 23, 2019, between the registrant and CGA 525 South Tryon TIC 1, LLC, a Delaware limited liability company, CGA 525 South Tryon TIC 2, LLC, a Delaware limited liability company, and CK 525 South Tryon TIC, LLC, a Delaware limited liability company (incorporated by reference to Exhibit 10.65 to registrant’s Annual Report on Form 10-K for the year ended December 31, 2019, filed on February 20, 2020, File No. 1-4928). Equity Distribution Agreement, dated November 10, 2022, among Duke Energy Corporation and Barclays Capital, Inc., BofA Securities, Inc., Credit Suisse Securities (USA) LLC, Mizuho Securities USA LLC, Scotia Capital (USA) Inc. and SMBC Nikko Securities America, Inc., acting as sales agents, and Barclays Capital Inc., BofA Securities Inc., Credit Suisse Securities (USA) LLC, Mizuho Markets Americas LLC and Scotia Capital (USA) Inc. or their respective affiliates, acting as forward purchasers (incorporated by reference to Exhibit 10.1 to registrant’s Current Report on Form 8-K, filed on November 10, 2022, File No. 1-32853 *21 List of Subsidiaries *23.1.1 Consent of Independent Registered Public Accounting Firm. *23.1.2 Consent of Independent Registered Public Accounting Firm. *23.1.3 Consent of Independent Registered Public Accounting Firm. *23.1.4 Consent of Independent Registered Public Accounting Firm. *23.1.5 Consent of Independent Registered Public Accounting Firm. *23.1.6 Consent of Independent Registered Public Accounting Firm. *23.1.7 Consent of Independent Registered Public Accounting Firm. *24.1 *24.2 *31.1.1 *31.1.2 *31.1.3 *31.1.4 *31.1.5 *31.1.6 *31.1.7 *31.1.8 *31.2.1 *31.2.2 Power of attorney authorizing Lynn J. Good and others to sign the Annual Report on behalf of the registrant and certain of its directors and officers. Certified copy of resolution of the Board of Directors of the registrant authorizing power of attorney. Certification of the Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002. Certification of the Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002. Certification of the Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002. Certification of the Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002. Certification of the Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002. Certification of the Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002. Certification of the Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002. Certification of the Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002. Certification of the Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002. X Certification of the Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002. E-27 Duke Energy Duke Energy Carolinas X Progress Energy Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana Piedmont X X X X X X X X X X X X X X PART IVDuke Energy Carolinas Duke Energy Progress Energy X Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana Piedmont Exhibit Number *31.2.3 *31.2.4 *31.2.5 *31.2.6 *31.2.7 *31.2.8 *32.1.1 *32.1.2 *32.1.3 *32.1.4 *32.1.5 *32.1.6 *32.1.7 *32.1.8 *32.2.1 *32.2.2 *32.2.3 *32.2.4 *32.2.5 *32.2.6 *32.2.7 *32.2.8 Certification of the Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002. Certification of the Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002. Certification of the Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002. Certification of the Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002. Certification of the Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002. Certification of the Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002. Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002. X Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002. Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002. Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002. Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002. Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002. Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002. Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002. Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002. X Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002. Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002. Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002. Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002. Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002. Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002. Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002. *101.INS XBRL Instance Document (this does not appear in the Interactive Data File because it’s XBRL tags are embedded within the Inline XBRL document). *101.SCH XBRL Taxonomy Extension Schema Document X X E-28 X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X PART IVExhibit Number *101.CAL XBRL Taxonomy Calculation Linkbase Document *101.LAB XBRL Taxonomy Label Linkbase Document *101.PRE XBRL Taxonomy Presentation Linkbase Document *101.DEF XBRL Taxonomy Definition Linkbase Document *104 Cover Page Interactive Data File (formatted in Inline XBRL and contained in Exhibit 101). Duke Energy Carolinas Duke Energy Progress Energy Duke Energy Progress Duke Energy Florida Duke Energy Ohio Duke Energy Indiana Piedmont X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X The total amount of securities of each respective 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 such registrant and its subsidiaries on a consolidated basis. Each registrant agrees, upon request of the SEC, to furnish copies of any or all of such instruments to it. E-29 PART IVSIGNATURES Pursuant to the requirements of Section 13 or 15(d) 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. Date: February 27, 2023 DUKE ENERGY CORPORATION (Registrant) Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the date indicated. By: /s/ LYNN J. GOOD Lynn J. Good Chair, President and Chief Executive Officer (i) /s/ LYNN J. GOOD Lynn J. Good Chair, President and Chief Executive Officer (Principal Executive Officer and Director) (ii) /s/ BRIAN D. SAVOY Brian D. Savoy Executive Vice President and Chief Financial Officer (Principal Financial Officer) (iii) /s/ CYNTHIA S. LEE Cynthia S. Lee Vice President, Chief Accounting Officer and Controller (Principal Accounting Officer) (iv) Directors: Derrick Burks* Annette K. Clayton* Theodore F. Craver, Jr.* Robert M. Davis* Caroline D. Dorsa* W. Roy Dunbar* Lynn J. Good* John T. Herron* Idalene F. Kesner* E. Marie McKee* Michael J. Pacilio* Thomas E. Skains* Nicholas C. Fanandakis* William E. Webster, Jr.* Brian D. Savoy, by signing his name hereto, does hereby sign this document on behalf of the registrant and on behalf of each of the above-named persons previously indicated by asterisk (*) pursuant to a power of attorney duly executed by the registrant and such persons, filed with the Securities and Exchange Commission as an exhibit hereto. By: /s/ BRIAN D. SAVOY Attorney-In-Fact Date: February 27, 2023 E-30 PART IV SIGNATURES Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized. Date: February 27, 2023 DUKE ENERGY CAROLINAS, LLC (Registrant) Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the By: /s/ LYNN J. GOOD Lynn J. Good Chief Executive Officer registrant and in the capacities and on the date indicated. (i) /s/ LYNN J. GOOD Lynn J. Good Chief Executive Officer (Principal Executive Officer) (ii) /s/ BRIAN D. SAVOY Brian D. Savoy Executive Vice President and Chief Financial Officer (Principal Financial Officer) (iii) /s/ CYNTHIA S. LEE Cynthia S. Lee Vice President, Chief Accounting Officer and Controller (Principal Accounting Officer) (iv) Directors: /s/ LYNN J. GOOD Lynn J. Good /s/ DHIAA M. JAMIL Dhiaa M. Jamil /s/ JULIA S. JANSON Julia S. Janson Date: February 27, 2023 E-31 PART IV SIGNATURES Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized. Date: February 27, 2023 PROGRESS ENERGY, INC. (Registrant) Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the By: /s/ LYNN J. GOOD Lynn J. Good Chief Executive Officer registrant and in the capacities and on the date indicated. (i) /s/ LYNN J. GOOD Lynn J. Good Chief Executive Officer (Principal Executive Officer) (ii) /s/ BRIAN D. SAVOY Brian D. Savoy Executive Vice President and Chief Financial Officer (Principal Financial Officer) (iii) /s/ CYNTHIA S. LEE Cynthia S. Lee Vice President, Chief Accounting Officer and Controller (Principal Accounting Officer) (iv) Directors: /s/ KODWO GHARTEY-TAGOE Kodwo Ghartey-Tagoe /s/ LYNN J. GOOD Lynn J. Good Date: February 27, 2023 E-32 PART IV SIGNATURES Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized. Date: February 27, 2023 DUKE ENERGY PROGRESS, LLC (Registrant) Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the By: /s/ LYNN J. GOOD Lynn J. Good Chief Executive Officer registrant and in the capacities and on the date indicated. (i) /s/ LYNN J. GOOD Lynn J. Good Chief Executive Officer (Principal Executive Officer) (ii) /s/ BRIAN D. SAVOY Brian D. Savoy Executive Vice President and Chief Financial Officer (Principal Financial Officer) (iii) /s/ CYNTHIA S. LEE Cynthia S. Lee Vice President, Chief Accounting Officer and Controller (Principal Accounting Officer) (iv) Directors: /s/ KODWO GHARTEY-TAGOE Kodwo Ghartey-Tagoe /s/ R. ALEXANDER GLENN R. Alexander Glenn /s/ LYNN J. GOOD Lynn J. Good /s/ DHIAA M. JAMIL Dhiaa M. Jamil /s/ JULIA S. JANSON Julia S. Janson Date: February 27, 2023 E-33 PART IV SIGNATURES Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized. Date: February 27, 2023 DUKE ENERGY FLORIDA, LLC (Registrant) Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the By: /s/ LYNN J. GOOD Lynn J. Good Chief Executive Officer registrant and in the capacities and on the date indicated. (i) /s/ LYNN J. GOOD Lynn J. Good Chief Executive Officer (Principal Executive Officer) (ii) /s/ BRIAN D. SAVOY Brian D. Savoy Executive Vice President and Chief Financial Officer (Principal Financial Officer) (iii) /s/ CYNTHIA S. LEE Cynthia S. Lee Vice President, Chief Accounting Officer and Controller (Principal Accounting Officer) (iv) Directors: /s/ KODWO GHARTEY-TAGOE Kodwo Ghartey-Tagoe /s/ R. ALEXANDER GLENN R. Alexander Glenn /s/ LYNN J. GOOD Lynn J. Good /s/ DHIAA M. JAMIL Dhiaa M. Jamil /s/ JULIA S. JANSON Julia S. Janson Date: February 27, 2023 E-34 PART IV SIGNATURES Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized. Date: February 27, 2023 DUKE ENERGY OHIO, INC. (Registrant) Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the By: /s/ LYNN J. GOOD Lynn J. Good Chief Executive Officer registrant and in the capacities and on the date indicated. (i) /s/ LYNN J. GOOD Lynn J. Good Chief Executive Officer (Principal Executive Officer) (ii) /s/ BRIAN D. SAVOY Brian D. Savoy Executive Vice President and Chief Financial Officer (Principal Financial Officer) (iii) /s/ CYNTHIA S. LEE Cynthia S. Lee Vice President, Chief Accounting Officer and Controller (Principal Accounting Officer) (iv) Directors: /s/ R. ALEXANDER GLENN R. Alexander Glenn /s/ LYNN J. GOOD Lynn J. Good /s/ DHIAA M. JAMIL Dhiaa M. Jamil Date: February 27, 2023 E-35 PART IV SIGNATURES Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized. Date: February 27, 2023 DUKE ENERGY INDIANA, LLC (Registrant) Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the By: /s/ LYNN J. GOOD Lynn J. Good Chief Executive Officer registrant and in the capacities and on the date indicated. (i) /s/ LYNN J. GOOD Lynn J. Good Chief Executive Officer (Principal Executive Officer) (ii) /s/ BRIAN D. SAVOY Brian D. Savoy Executive Vice President and Chief Financial Officer (Principal Financial Officer) (iii) /s/ CYNTHIA S. LEE Cynthia S. Lee Vice President, Chief Accounting Officer and Controller (Principal Accounting Officer) (iv) Directors: /s/ R. ALEXANDER GLENN R. Alexander Glenn /s/ KELLEY A. KARN Kelley A. Karn /s/ STAN PINEGAR Stan Pinegar Date: February 27, 2023 E-36 PART IV SIGNATURES Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized. Date: February 27, 2023 PIEDMONT NATURAL GAS COMPANY, INC. (Registrant) Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the By: /s/ LYNN J. GOOD Lynn J. Good Chief Executive Officer registrant and in the capacities and on the date indicated. (i) /s/ LYNN J. GOOD Lynn J. Good Chief Executive Officer (Principal Executive Officer) (ii) /s/ BRIAN D. SAVOY Brian D. Savoy Executive Vice President and Chief Financial Officer (Principal Financial Officer) (iii) /s/ CYNTHIA S. LEE Cynthia S. Lee Vice President, Chief Accounting Officer and Controller (Principal Accounting Officer) (iv) Directors: /s/ LYNN J. GOOD Lynn J. Good /s/ DHIAA M. JAMIL Dhiaa M. Jamil /s/ BRIAN D. SAVOY Brian D. Savoy Date: February 27, 2023 E-37 PART IV Intentionally Left Blank 

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