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August 6, 2024

▪Second-quarter 2024 reported EPS of $1.13 and adjusted EPS of $1.18

▪Strong performance in the first half of the year sets the stage for full year results within guidance range

▪Constructive outcomes build momentum and provide foundation for continued growth

CHARLOTTE, N.C. – Duke Energy (NYSE: DUK) today announced second-quarter 2024 reported EPS of $1.13, prepared in accordance with Generally Accepted Accounting Principles (GAAP), and adjusted EPS of $1.18. This is compared to reported loss per share of $(0.32) and adjusted EPS of $0.91 for the second quarter of 2023.

Adjusted EPS excludes the impact of certain items that are included in reported EPS. The difference between second-quarter 2024 reported and adjusted EPS includes the impact of charges related to the Duke Energy Carolinas South Carolina rate case order, as well as results of discontinued operations.

Higher second-quarter 2024 adjusted results were driven by growth from rate increases and riders, higher sales volumes and improved weather. These items were partially offset by higher interest expense and depreciation on a growing asset base.

The company is reaffirming its 2024 adjusted EPS guidance range of $5.85 to $6.10, and long-term adjusted EPS growth rate of 5% to 7% through 2028 off the 2024 midpoint of $5.98. Management does not forecast reported GAAP EPS and related long-term growth rates.

“We’ve had an excellent first half of the year, delivering on grid and generation investments and collaborating with stakeholders to advance the energy transition across our jurisdictions,” said Lynn Good, Duke Energy chair and chief executive officer.

“We have clear growth visibility driven by our $73 billion capital plan. Our fully regulated portfolio combined with our track record of constructive regulatory outcomes has us well positioned to deliver value for our customers, communities and shareholders." Duke Energy News Release 2

In addition to the following summary of second-quarter 2024 business segment performance, comprehensive tables with detailed EPS drivers for the second quarter compared to prior year are provided at the end of this news release.

The discussion below of second-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 second-quarter 2024 segment income of $1,090 million, compared to reported segment income of $850 million in the second quarter of 2023. In addition to the drivers outlined below, second-quarter 2024 results include the impact of charges related to the Duke Energy Carolinas South Carolina rate case order, which was treated as a special item and excluded from adjusted earnings.

On an adjusted basis, Electric Utilities and Infrastructure recognized second-quarter 2024 segment income of $1,115 million, compared to adjusted segment income of $850 million in the second quarter of 2023. This represents an increase of $0.34 per share. Higher quarterly results were primarily due to growth from rate increases and riders, higher sales volumes and improved weather, partially offset by higher depreciation on a growing asset base and higher interest expense.

On a reported and adjusted basis, Gas Utilities and Infrastructure recognized second-quarter 2024 segment income of $6 million, compared to reported and adjusted segment income of $25 million in the second quarter of 2023. This represents a decrease of $0.02 per share. Lower quarterly results were primarily driven by higher expenses partially offset by growth from riders and other retail margin.

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 and adjusted basis, Other recognized a second-quarter 2024 segment loss of $200 million, compared to reported and adjusted segment loss of $161 million in the second quarter of 2023. This represents a decrease of $0.05 per share. Lower quarterly results were primarily due to higher interest expense.

Duke Energy's consolidated reported effective tax rate for the second quarter of 2024 was 13.1% compared to 13.7% in the second quarter of 2023.

Duke Energy's consolidated adjusted effective tax rate was 13.4% for the second quarter of 2024 compared to 13.8% in the second quarter of 2023.

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 second-quarter 2024 financial results and other business and financial updates. The conference call will be hosted by Lynn Good, chair and chief executive officer, Harry Sideris, president, 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 187230. Please call in 10 to 15 minutes prior to the scheduled start time.

A recording of the webcast with transcript will be available on the investors' section of the company’s website on August 7.

The following table presents a reconciliation of GAAP reported earnings (loss) per share to adjusted earnings per share for second-quarter 2024 and 2023 financial results:

(In millions, except per share amounts)			After-Tax Amount			2Q 2024 EPS			2Q 2023 EPS
Earnings (Loss) Per Share, as reported						$	1.13		$	(0.32)
Adjustments to reported EPS:
Second Quarter 2024
Regulatory matters			$	25		$	0.03
Discontinued operations(a)			10			0.01
Second Quarter 2023
Discontinued operations(a)			$	948					$	1.23
Total adjustments(b)						$	0.05		$	1.23
EPS, adjusted						$	1.18		$	0.91

(a)    Represents the operating results and impairments 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. As discussed below, special items include certain charges and credits, which management believes are not indicative of Duke Energy's ongoing performance.

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. 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.

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

•Regulatory matters primarily represents impairment charges related to Duke Energy Carolinas' South Carolina rate case order.

Due to the forward-looking nature of any forecasted adjusted earnings guidance, information to reconcile this non-GAAP financial measure 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).

Management evaluates segment performance based on segment income and other net loss. Segment income and other net loss is defined as income (loss) from continuing operations net of income attributable to noncontrolling interests and preferred stock dividends. Segment income and other net loss includes 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 a measure of historical and anticipated future segment performance. Adjusted segment income and adjusted other net loss is a non-GAAP financial measure, as it is based upon segment income and other net loss adjusted for special items, which are discussed above. Management believes the presentation of adjusted segment income and adjusted other net loss provides useful information to investors, as it provides them with an additional relevant comparison of a segment’s performance across periods. The most directly comparable GAAP measure for adjusted segment income or adjusted other net loss is segment income and other net loss.

Due to the forward-looking nature of any forecasted adjusted segment income or adjusted other net loss and any related growth rates for future periods, information to reconcile these non-GAAP financial measures to the most directly comparable GAAP financial measures is not available at this time, as the company is unable to forecast all special items, as discussed above.

Duke Energy’s adjusted earnings, adjusted EPS and 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 8.4 million customers in North Carolina, South Carolina, Florida, Indiana, Ohio and Kentucky, and collectively own 54,800 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 clean energy transition, keeping reliability, affordability and accessibility at the forefront as the company works toward net-zero methane emissions from its natural gas business by 2030 and net-zero carbon emissions from electricity generation by 2050. The company is investing in major electric grid upgrades and cleaner generation, including expanded energy storage, renewables, natural gas and nuclear.

More information is available at duke-energy.com and the Duke Energy News Center. Follow Duke Energy on Twitter, 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 our carbon emission reduction goals;

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

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

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

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

◦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; Duke Energy News Release 6

◦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 businesses and the success of efforts to invest in and develop new opportunities; Duke Energy News Release 7

◦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; 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 any obligation to publicly update or revise any forward-looking statements, whether as a result of new information, future events or otherwise.

Note: Earnings Per Share amounts are adjusted for accumulated dividends for Series B Preferred Stock of $(0.02). Total EPS adjustments do not cross-foot due to rounding.

•$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 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 South Carolina rate case order.

•$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 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 South Carolina rate case order.

Note: (Loss) Earnings Per Share amounts are adjusted for accumulated dividends for Series B Preferred Stock of $(0.02).

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

(a)    Electric Utilities and Infrastructure includes higher grid modernization riders and transmission revenues (+$0.05).

(b)    Electric Utilities and Infrastructure includes impacts from DEC North Carolina rates, effective January 2024, (+$0.07), DEP North Carolina rates, effective October 2023, (+$0.02) and DEF multiyear rate plan revenue increases (+$0.02).

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

(a)    Electric Utilities and Infrastructure includes higher grid modernization riders and transmission revenues (+$0.08). Gas Utilities and Infrastructure includes higher revenues from Tennessee ARM (+$0.02), riders and customer growth.

(b)    Electric Utilities and Infrastructure includes impacts from DEC North Carolina rates, effective January 2024, (+$0.14), DEP South Carolina rates, effective April 2023 and DEP North Carolina rates, effective October 2023, (+$0.05) and DEK rates, effective October 2023, (+$0.01), partially offset by the impact of lower DOE nuclear fuel storage funding, net of DEF multiyear rate plan revenue increases (-$0.02). Gas Utilities and Infrastructure includes impacts from DEO rates, effective November 2023.

(c)    Primarily due to higher capacity rates.

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

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

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