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November 7, 2025

▪Third-quarter 2025 reported and adjusted EPS of $1.81, representing over 11% growth versus third-quarter 2024

▪Company narrows 2025 adjusted EPS guidance range to $6.25 to $6.35 and reaffirms long-term adjusted EPS growth rate of 5% to 7% through 2029

▪Economic development tailwinds support increasing capital plan while keeping customer rates below the national average; expect to announce new 2026-2030 capital plan between $95 and $105 billion in February

CHARLOTTE, N.C. – Duke Energy (NYSE: DUK) today announced third-quarter 2025 reported EPS, prepared in accordance with Generally Accepted Accounting Principles (GAAP), and adjusted EPS of $1.81. This is compared to reported EPS of $1.60 and adjusted EPS of $1.62 for the third quarter of 2024. Adjusted EPS excludes the impact of certain items that are included in reported EPS.

Higher third-quarter 2025 adjusted results were driven by the implementation of new rates and riders, along with higher retail sales volumes. These items were partially offset by higher interest expense, milder weather and higher depreciation and property taxes on a growing asset base.

The company is narrowing its 2025 adjusted EPS guidance range to $6.25 to $6.35 and reaffirming its long-term adjusted EPS growth rate of 5% to 7% through 2029 off the 2025 midpoint of $6.30. Management does not forecast reported GAAP EPS and related long-term growth rates.

“We remain on track to deliver strong results in 2025, while advancing an energy modernization strategy that creates value for our customers, stakeholders and investors,” said Harry Sideris, Duke Energy president and chief executive officer. “With our economic development pipeline continuing to progress and concrete investment plans in place, we are reaffirming our long-term EPS growth rate and have confidence we will earn in the top half of the range beginning in 2028.”

“Furthermore, as load growth materializes across our jurisdictions, we are expecting our new five-year capital plan to be between $95 and $105 billion when we refresh the plan in February, increasing the largest capital plan in the industry.”

“As the investment needs of our utilities accelerate, customer value and affordability remain front and center,” Sideris added. “Cost management is a core competency for Duke Energy and we focus on keeping bills as low as possible – including rates well below the national average and average changes below the rate of inflation – to ensure our 10 million customers receive the service they count on at a fair price." Duke Energy News Release 2

In addition to the following summary of third-quarter 2025 business segment performance, comprehensive tables with detailed EPS drivers for the third quarter compared to prior year are provided at the end of this news release.

The discussion below of third-quarter results includes both GAAP segment income and adjusted segment income, which is a non-GAAP financial measure. The tables at the end of this news release present a full reconciliation of GAAP reported results to adjusted results.

On a reported basis, Electric Utilities and Infrastructure recognized third-quarter 2025 segment income of $1,658 million, compared to segment income of $1,451 million in the third quarter of 2024.

On an adjusted basis, Electric Utilities and Infrastructure recognized third-quarter 2025 segment income of $1,658 million, compared to segment income of $1,464 million in the third quarter of 2024. This represents an increase of $0.24 per share, excluding share dilution of $0.01 per share. Higher quarterly results were primarily due to the implementation of new rates and higher retail sales volumes, partially offset by milder weather, higher interest expense and higher depreciation and property taxes on a growing asset base.

On a reported basis, Gas Utilities and Infrastructure recognized third-quarter 2025 segment loss of $26 million, compared to segment loss of $25 million in the third quarter of 2024.

On an adjusted basis, Gas Utilities and Infrastructure recognized third-quarter 2025 segment loss of $26 million, compared to segment loss of $22 million in the third quarter of 2024. Flat quarterly results were primarily due to growth from rate increases and riders, offset by higher O&M expense and depreciation on a growing asset base.

Other primarily includes interest expense on holding company debt, other unallocated corporate costs and results from Duke Energy’s captive insurance company.

On a reported basis, Other recognized a third-quarter 2025 segment loss of $225 million, compared to segment loss of $222 million in the third quarter of 2024.

On an adjusted basis, Other recognized a third-quarter 2025 segment loss of $225 million, compared to segment loss of $206 million in the third quarter of 2024. This represents a decrease of $0.04 per share. Lower quarterly results were primarily due to higher interest expense.

Duke Energy's consolidated reported effective tax rate for the third quarter of 2025 was 10.8% compared to 11.2% in the third quarter of 2024. The decrease in the reported effective tax rate was primarily due to an increase in the amortization of income tax credits.

Duke Energy's consolidated adjusted effective tax rate was 10.8% for the third quarter of 2025 compared to 11.6% in the third quarter of 2024. The decrease in the adjusted effective tax rate was primarily due to an increase in the amortization of income tax credits.

The tables at the end of this news release present a reconciliation of the reported effective tax rate to the adjusted effective tax rate.

An earnings conference call for analysts is scheduled at 10 a.m. ET today to discuss third-quarter 2025 financial results and other business and financial updates. The conference call will be hosted by Harry Sideris, president and chief executive officer, and Brian Savoy, executive vice president and chief financial officer.

The call can be accessed via the investors' section (duke-energy.com/investors) of Duke Energy’s website or by dialing 833.470.1428 in the U.S. or 929.526.1599 outside the U.S. The confirmation code is 664572. Please call in 10 to 15 minutes prior to the scheduled start time.

The following table presents a reconciliation of GAAP reported EPS to adjusted EPS for third-quarter 2025 and 2024 financial results:

(In millions, except per share amounts)			After-Tax Amount			3Q 2025 EPS			3Q 2024 EPS
EPS, as reported						$	1.81		$	1.60
Adjustments to reported EPS:
Third Quarter 2025
Discontinued Operations			—			—
Third Quarter 2024
System Post-Implementation Costs			$	16					$	0.02
Preferred Redemption Costs			16						0.02
Discontinued Operations(a)			(22)						(0.03)
Total adjustments(b)						$	—		$	0.02
EPS, adjusted						$	1.81		$	1.62

(a)    Represents the operating results and net impairment reversal recognized related to the sale of the Commercial Renewables business disposal group.

(b)    Total EPS adjustments may not foot due to rounding.

Management evaluates financial performance in part based on non-GAAP financial measures, including adjusted earnings, adjusted EPS and adjusted effective tax rate. Adjusted earnings and adjusted EPS represent income (loss) from continuing operations available to Duke Energy Corporation common stockholders in dollar and basic per share amounts, adjusted for the dollar and per share impact of special items. The adjusted effective tax rate is calculated using pretax earnings and income tax expense, both adjusted to include the impact of noncontrolling interests and preferred dividends and to exclude the impact of special items. Special items represent certain charges and credits, which management believes are not indicative of Duke Energy's ongoing performance.

Special items included within the financial statement periods presented, which management does not believe are reflective of ongoing costs, are described below:

•System Post-Implementation Costs represents the net impact of charges related to nonrecurring customer billing adjustments as a result of implementation of a new customer system.

•Preferred Redemption Costs represents charges related to the redemption of Series B Preferred Stock.

Management uses these non-GAAP financial measures for planning, forecasting, and to report financial results to the Board of Directors, employees, and stockholders, as well as analysts and investors. The most directly comparable GAAP measures for adjusted earnings, adjusted EPS and the adjusted effective tax rate are Net Income (Loss) Available to Duke Energy Corporation common stockholders (GAAP reported earnings (loss)), Basic earnings (loss) per share Available to Duke Energy Corporation common stockholders (GAAP reported earnings (loss) per share), and the reported effective tax rate, respectively.

Due to the forward-looking nature of forecasted adjusted EPS and related growth rates, the information to reconcile those amounts to the most directly comparable GAAP financial measure is not available, as management is unable to project special items, such as legal settlements, impacts of regulatory orders or asset impairments, for future periods.

Management evaluates segment performance based on segment income and other net loss. Segment income and other net loss are defined as income (loss) from continuing operations net of income attributable to noncontrolling interests and preferred stock dividends. Segment income and other net loss include intercompany revenues and expenses that are eliminated in the Condensed Consolidated Financial Statements. Management also uses adjusted segment income and adjusted other net loss as measures of historical and anticipated future segment performance. Adjusted segment income and adjusted other net loss are non-GAAP financial measures, as they represent segment income and other net loss adjusted for special items, as discussed above. Management believes the presentation of adjusted segment income and adjusted other net loss provide useful information to investors, as they provide additional relevant comparison of a segment’s or Other's performance across periods. The most directly comparable GAAP measures for adjusted segment income and adjusted other net loss are segment income and other net loss.

Due to the forward-looking nature of forecasted adjusted segment income and forecasted adjusted other net loss and related growth rates, the information to reconcile these amounts to the most directly comparable GAAP financial measures are not available, as management is unable to project special items, as discussed above.

Duke Energy’s adjusted earnings, adjusted EPS, adjusted effective tax rate, adjusted segment income, and adjusted other net loss may not be comparable to similarly titled measures of another company because other companies may not calculate the measures in the same manner.

Duke Energy (NYSE: DUK), a Fortune 150 company headquartered in Charlotte, N.C., is one of America’s largest energy holding companies. The company's electric utilities serve 8.6 million customers in North Carolina, South Carolina, Florida, Indiana, Ohio and Kentucky, and collectively own 55,100 megawatts of energy capacity. Its natural gas utilities serve 1.7 million customers in North Carolina, South Carolina, Tennessee, Ohio and Kentucky.

Duke Energy is executing an ambitious energy transition, keeping customer reliability and value at the forefront as it builds a smarter energy future. The company is investing in major electric grid upgrades and cleaner generation, including natural gas, nuclear, renewables and energy storage.

More information is available at duke-energy.com and the Duke Energy News Center. Follow Duke Energy on X, LinkedIn, Instagram and Facebook, and visit illumination for stories about the people and innovations powering our energy transition.

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

◦The ability to implement our business strategy, including meeting forecasted load growth demand, grid and fleet modernization objectives, and our carbon emission reduction goals, while balancing customer reliability and affordability;

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

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

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

◦The costs of decommissioning nuclear facilities could prove to be more extensive than amounts estimated and all costs may not be fully recoverable through the regulatory process; Duke Energy News Release 6

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

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

◦Industrial, commercial and residential decline in service territories or customer bases resulting from sustained downturns of the economy, storm damage, reduced customer usage due to cost pressures from inflation, tariffs, or fuel costs, worsening economic health of our service territories, reductions in customer usage patterns, or lower than anticipated load growth, particularly if usage of electricity by data centers is less than currently projected, energy efficiency efforts, natural gas building and appliance electrification, and use of alternative energy sources, such as self-generation and distributed generation technologies;

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

◦Advancements in technology, including artificial intelligence;

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

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

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

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

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

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

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

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

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

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

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

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

◦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; Duke Energy News Release 7

◦The level of creditworthiness of counterparties to transactions;

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

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

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

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

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

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

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

◦Asset or business acquisitions and dispositions may not be consummated or yield the anticipated benefits, which could adversely affect our financial condition, credit metrics or ability to execute strategic and capital plans; and

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

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

A – Recorded in Income (Loss) from Discontinued Operations, net of tax, on the Condensed Consolidated Statements of Operations.

A – Net of $4 million tax benefit. $17 million recorded within Operating Revenues on the Condensed Consolidated Statements of Operations related to nonrecurring customer billing adjustments as a result of implementation of a new customer system.

B – Net of $1 million tax benefit. $1 million recorded within Operations, maintenance and other and $3 million recorded within Other Income and expenses on the Condensed Consolidated Statements of Operations related to nonrecurring customer billing adjustments as a result of implementation of a new customer system.

C – $16 million recorded within Preferred Redemption Costs on the Condensed Consolidated Statements of Operations related to the redemption of Series B Preferred Stock.

D – Recorded in Income (Loss) from Discontinued Operations, net of tax, on the Condensed Consolidated Statements of Operations.

A – Net of $6 million tax benefit at Duke Energy Carolinas and $2 million tax benefit at Duke Energy Progress.

•$33 million recorded within Impairment of assets and other charges, $2 million recorded within Operations, maintenance and other, and an $11 million reduction recorded within Interest Expense on the Duke Energy Carolinas' Condensed Consolidated Statement of Operations related to the 2024 South Carolina rate case order.

•$9 million recorded within Impairment of assets and other charges on the Duke Energy Progress' Condensed Consolidated Statement of Operations related to the 2024 South Carolina rate case order.

B – Net of $4 million tax benefit. $17 million recorded within Operating Revenues on the Condensed Consolidated Statements of Operations related to nonrecurring customer billing adjustments as a result of implementation of a new customer system.

C – Net of $1 million tax benefit. $1 million recorded within Operations, maintenance and other and $3 million recorded within Other Income and expenses on the Condensed Consolidated Statements of Operations related to nonrecurring customer billing adjustments as a result of implementation of a new customer system.

D – $16 million recorded within Preferred Redemption Costs on the Condensed Consolidated Statements of Operations related to the redemption of Series B Preferred Stock.

E – Recorded in Income (Loss) from Discontinued Operations, net of tax, on the Condensed Consolidated Statements of Operations.

(a)    Income tax related to non-pass-through entities for tax purposes.

(a)    Includes block and seasonal pricing.

(b)    Electric Utilities and Infrastructure includes higher grid modernization riders and transmission revenues.

(c)    Electric Utilities and Infrastructure includes impacts from DEF multiyear rate plan revenue increases, effective January 2025 (+$0.06), DEC North Carolina Year 2 rates, effective January 2025, and DEC South Carolina rates, effective August 2024 (+$0.03), DEI rates, effective February 2025 (+$0.03), DEP North Carolina Year 2 rates, effective October 2024, (+$0.02) and DEK rates, effective July 2025 (+$0.01). Gas Utilities and Infrastructure includes impacts from Piedmont North Carolina rates, effective November 2024.

(d)    Electric Utilities and Infrastructure excludes rate case impacts.

(e)    Electric Utilities and Infrastructure includes higher property taxes.

(a)    Electric Utilities and Infrastructure includes transmission revenues and higher grid modernization riders. Gas Utilities and Infrastructure includes higher construction and pipeline integrity riders in Ohio and Kentucky, as well as higher revenues from the Tennessee Annual Review Mechanism and the South Carolina Rate Stabilization Act mechanism.

(b)    Electric Utilities and Infrastructure includes impacts from DEC North Carolina Year 2 rates, effective January 2025, and DEC South Carolina rates, effective August 2024 (+$0.18), DEF multiyear rate plan revenue increases, effective January 2025 (+$0.15), DEI rates, effective February 2025 (+$0.08), DEP North Carolina Year 2 rates, effective October 2024 (+$0.06) and DEK rates, effective July 2025 (+$0.01). Gas Utilities and Infrastructure includes impacts from Piedmont North Carolina rates, effective November 2024.

(c)    Electric Utilities and Infrastructure includes higher grid maintenance and generation outage costs, as well as other corporate costs in the current year.

(d)    Electric Utilities and Infrastructure excludes rate case impacts.

(e)    Electric Utilities and Infrastructure includes higher property taxes.

(a)    See Reported to Adjusted Earnings Reconciliation for a detailed reconciliation of Segment Income/Other Net Loss to Adjusted Earnings.