DUKB / Duke Energy Corporation - Corporate Bond/Note - Pengajuan SECLaporan Tahunan, Pernyataan Proksi

Certification of the Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.2.4 CERTIFICATION OF THE CHIEF FINANCIAL OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Brian D. Savoy, certify that: 1) I have reviewed this quarterly report on Form 10-Q of Duke Energy Progress, LLC; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made

// 1 // 1 Transactions position company for growth ahead $87 BILLION CAPITAL PLAN INCREASING 2025 - 2029 DEF CAPITAL PLAN BY $4 BILLION DUKE ENERGY FLORIDA EQUITY INVESTMENT ▪ Brookfield to acquire 19.7% stake in DEF ▪ Implied valuation of 2.0x 2024

Exhibit 99.2 // 1 // 1 Transactions position company for growth ahead $87 BILLION CAPITAL PLAN INCREASING 2025 - 2029 DEF CAPITAL PLAN BY $4 BILLION DUKE ENERGY FLORIDA EQUITY INVESTMENT ▪ Brookfield to acquire 19.7% stake in DEF ▪ Implied valuation of 2.0x 2024 year - end rate base ▪ Multi - tranche closing; initial closing expected early 2026 ▪ Spire to acquire Piedmont Natural Gas TN LDC busine

Certification of the Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.2.2 CERTIFICATION OF THE CHIEF FINANCIAL OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Brian D. Savoy, certify that: 1) I have reviewed this quarterly report on Form 10-Q of Duke Energy Carolinas, LLC; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements mad

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.2.6 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report of Duke Energy Ohio, Inc. (“Duke Energy Ohio”) on Form 10-Q for the period ending June 30, 2025, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Brian D. Savoy, Executive Vice Preside

Certification of the Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.2.1 CERTIFICATION OF THE CHIEF FINANCIAL OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Brian D. Savoy, certify that: 1) I have reviewed this quarterly report on Form 10-Q of Duke Energy Corporation; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made,

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.2.8 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report of Piedmont Natural Gas Company, Inc. (“Piedmont”) on Form 10-Q for the period ending June 30, 2025, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Brian D. Savoy, Executive Vice Pre

Certification of the Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.2.6 CERTIFICATION OF THE CHIEF FINANCIAL OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Brian D. Savoy, certify that: 1) I have reviewed this quarterly report on Form 10-Q of Duke Energy Ohio, Inc.; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, i

Certification of the Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.1.4 CERTIFICATION OF THE CHIEF EXECUTIVE OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Harry K. Sideris, certify that: 1) I have reviewed this quarterly report on Form 10-Q of Duke Energy Progress, LLC; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements ma

Certification of the Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.1.3 CERTIFICATION OF THE CHIEF EXECUTIVE OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Harry K. Sideris, certify that: 1) I have reviewed this quarterly report on Form 10-Q of Progress Energy, Inc.; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made,

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.2.3 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report of Progress Energy, Inc. (“Progress Energy”) on Form 10-Q for the period ending June 30, 2025, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Brian D. Savoy, Executive Vice President

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2025 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number Registrant, State of

Certification of the Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.2.8 CERTIFICATION OF THE CHIEF FINANCIAL OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Brian D. Savoy, certify that: 1) I have reviewed this quarterly report on Form 10-Q of Piedmont Natural Gas Company, Inc.; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statem

Certification of the Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.1.6 CERTIFICATION OF THE CHIEF EXECUTIVE OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Harry K. Sideris, certify that: 1) I have reviewed this quarterly report on Form 10-Q of Duke Energy Ohio, Inc.; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made,

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.2.2 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report of Duke Energy Carolinas, LLC (“Duke Energy Carolinas”) on Form 10-Q for the period ending June 30, 2025, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Brian D. Savoy, Executive Vic

Certification of the Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.1.7 CERTIFICATION OF THE CHIEF EXECUTIVE OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Harry K. Sideris, certify that: 1) I have reviewed this quarterly report on Form 10-Q of Duke Energy Indiana, LLC; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements mad

2Q 2025 EPS

News Release Media Contact: Gillian Moore 24-Hour: 800.559.3853 Analyst Contact: Abby Motsinger Office: 704.382.7624 August 5, 2025 Duke Energy reports second-quarter 2025 financial results ▪Second-quarter 2025 reported and adjusted EPS of $1.25 ▪Strong first half performance puts the company on track to deliver full year results within guidance range ▪Transaction proceeds support material strengt

Certification of the Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.1.1 CERTIFICATION OF THE CHIEF EXECUTIVE OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Harry K. Sideris, certify that: 1) I have reviewed this quarterly report on Form 10-Q of Duke Energy Corporation; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.1.3 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report of Progress Energy, Inc. (“Progress Energy”) on Form 10-Q for the period ending June 30, 2025, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Harry K. Sideris, Chief Executive Office

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.1.6 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report of Duke Energy Ohio, Inc. (“Duke Energy Ohio”) on Form 10-Q for the period ending June 30, 2025, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Harry K. Sideris, Chief Executive Offi

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.2.7 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report of Duke Energy Indiana, LLC (“Duke Energy Indiana”) on Form 10-Q for the period ending June 30, 2025, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Brian D. Savoy, Executive Vice Pr

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.1.8 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report of Piedmont Natural Gas Company, Inc. (“Piedmont”) on Form 10-Q for the period ending June 30, 2025, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Harry K. Sideris, Chief Executive

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.1.2 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report of Duke Energy Carolinas, LLC (“Duke Energy Carolinas”) on Form 10-Q for the period ending June 30, 2025, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Harry K. Sideris, Chief Execu

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 5, 2025 Commission File Nu

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 5, 2025 Commission File Number Exact Name of Registrant as Specified in its Charter, State or other Jurisdiction of Incorporation, Address of Principal Executive Offices, Zip C

Certification of the Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.1.8 CERTIFICATION OF THE CHIEF EXECUTIVE OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Harry K. Sideris, certify that: 1) I have reviewed this quarterly report on Form 10-Q of Piedmont Natural Gas Company, Inc.; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the stat

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.1.1 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report of Duke Energy Corporation (“Duke Energy”) on Form 10-Q for the period ending June 30, 2025, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Harry K. Sideris, President and Chief Exec

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.1.4 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report of Duke Energy Progress, LLC (“Duke Energy Progress”) on Form 10-Q for the period ending June 30, 2025, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Harry K. Sideris, Chief Executi

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.2.1 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report of Duke Energy Corporation (“Duke Energy”) on Form 10-Q for the period ending June 30, 2025, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Brian D. Savoy, Executive Vice President a

Certification of the Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.1.5 CERTIFICATION OF THE CHIEF EXECUTIVE OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Harry K. Sideris, certify that: 1) I have reviewed this quarterly report on Form 10-Q of Duke Energy Florida, LLC; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements mad

Certification of the Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.1.2 CERTIFICATION OF THE CHIEF EXECUTIVE OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Harry K. Sideris, certify that: 1) I have reviewed this quarterly report on Form 10-Q of Duke Energy Carolinas, LLC; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements m

Certification of the Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.2.5 CERTIFICATION OF THE CHIEF FINANCIAL OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Brian D. Savoy, certify that: 1) I have reviewed this quarterly report on Form 10-Q of Duke Energy Florida, LLC; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made,

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Exhibit 99.1 Media Contact: Gillian Moore 24-Hour: 800.559.3853 Analysts Contact: Abby Motsinger Office: 704.382.7624 Aug. 5, 2025 Duke Energy partners with Brookfield to secure investment in Duke Energy Florida, expands capital plan to $87 billion ● Brookfield invests in a 19.7% non-controlling equity interest in Duke Energy Florida for $6 billion ● Partnership supports $4 billion increase in Duk

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 4, 2025

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 4, 2025 Commission File Number Exact Name of Registrant as Specified in its Charter, State or other Jurisdiction of Incorporation, Address of Principal Executive Offices, Zip C

Certification of the Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.2.7 CERTIFICATION OF THE CHIEF FINANCIAL OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Brian D. Savoy, certify that: 1) I have reviewed this quarterly report on Form 10-Q of Duke Energy Indiana, LLC; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made,

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.2.4 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report of Duke Energy Progress, LLC (“Duke Energy Progress”) on Form 10-Q for the period ending June 30, 2025, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Brian D. Savoy, Executive Vice

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.1.7 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report of Duke Energy Indiana, LLC (“Duke Energy Indiana”) on Form 10-Q for the period ending June 30, 2025, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Harry K. Sideris, Chief Executive

Certification of the Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.2.3 CERTIFICATION OF THE CHIEF FINANCIAL OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Brian D. Savoy, certify that: 1) I have reviewed this quarterly report on Form 10-Q of Progress Energy, Inc.; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.1.5 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report of Duke Energy Florida, LLC (“Duke Energy Florida”) on Form 10-Q for the period ending June 30, 2025, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Harry K. Sideris, Chief Executive

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.2.5 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report of Duke Energy Florida, LLC (“Duke Energy Florida”) on Form 10-Q for the period ending June 30, 2025, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Brian D. Savoy, Executive Vice Pr

1 // 1 Piedmont Tennessee LDC: Transaction Summary ▪ On July 29, 2025, Duke Energy announced the sale of its Piedmont Natural Gas Tennessee local distribution company (LDC) business to Spire for approximately $2.48 billion in cash ▪ Sale price repres

Exhibit 99.2 1 // 1 Piedmont Tennessee LDC: Transaction Summary ▪ On July 29, 2025, Duke Energy announced the sale of its Piedmont Natural Gas Tennessee local distribution company (LDC) business to Spire for approximately $2.48 billion in cash ▪ Sale price represents a 1.8x multiple of 2024 year - end rate base and a 24x multiple of 2024 earnings – a significant premium to Duke Energy’s common sto

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Exhibit 99.1 Media Contact: Gillian Moore 24-Hour: 800.559.3853 Analysts Contact: Abby Motsinger Office: 704.382.7624 July 29, 2025 Duke Energy announces sale of its Tennessee Piedmont Natural Gas business to Spire for $2.48 billion · Transaction expected to close Q1 2026 · Proceeds help efficiently fund Duke Energy’s $83 billion five-year capital plan CHARLOTTE, N.C. – Duke Energy (NYSE: DUK) tod

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 27, 2025

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 27, 2025 Commission File Number Exact Name of Registrant as Specified in its Charter, State or other Jurisdiction of Incorporation, Address of Principal Executive Offices, Zip Co

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 11-K ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Year Ended December 31, 2024 DUKE ENERGY RETIREMENT SAVINGS PLAN Commission File

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 11-K ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Year Ended December 31, 2024 of DUKE ENERGY RETIREMENT SAVINGS PLAN Commission File Number 1-32853 Issuer of Securities held pursuant to the Plan is DUKE ENERGY CORPORATION 525 South Tryon Street Charlotte, North Carolina 28202 DUK

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.1.7 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report of Duke Energy Indiana, LLC (“Duke Energy Indiana”) on Form 10-Q for the period ending March 31, 2025, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Harry K. Sideris, Chief Executiv

Certification of the Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.2.2 CERTIFICATION OF THE CHIEF FINANCIAL OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Brian D. Savoy, certify that: 1) I have reviewed this quarterly report on Form 10-Q of Duke Energy Carolinas, LLC; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements mad

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 6, 2025 Commission File Number Exact Name of Registrant as Specified in its Charter, State or other Jurisdiction of Incorporation, Address of Principal Executive Offices, Zip Code

Certification of the Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.1.3 CERTIFICATION OF THE CHIEF EXECUTIVE OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Harry K. Sideris, certify that: 1) I have reviewed this quarterly report on Form 10-Q of Progress Energy, Inc.; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made,

Duke Energy Corporation 2025 Director Compensation Program Summary

Exhibit 10.4 Effective May 1, 2025, the compensation paid to our outside directors will consist of: Type of Fee Fee Annual Board Retainer (Cash) $135,000 Annual Board Retainer (Stock) $195,000 Annual non-executive Chairman of the Board Retainer, if applicable (50% Cash/50% Stock) $200,000 Annual Lead Director Retainer, if applicable $40,000 Annual Audit Committee Chair Retainer $30,000 Annual Comp

Certification of the Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.2.5 CERTIFICATION OF THE CHIEF FINANCIAL OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Brian D. Savoy, certify that: 1) I have reviewed this quarterly report on Form 10-Q of Duke Energy Florida, LLC; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made,

Certification of the Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.1.6 CERTIFICATION OF THE CHIEF EXECUTIVE OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Harry K. Sideris, certify that: 1) I have reviewed this quarterly report on Form 10-Q of Duke Energy Ohio, Inc.; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made,

Form of Restricted Stock Unit Award Agreement

Exhibit 10.3 RESTRICTED STOCK UNIT AWARD AGREEMENT Duke Energy Corporation (the "Corporation") grants to the individual named below ("Grantee"), in accordance with the terms of the Duke Energy Corporation 2023 Long-Term Incentive Plan, as it may be amended from time to time (the "Plan") and this Restricted Stock Unit Award Agreement (the "Agreement"), the following number of Restricted Stock Units

Certification of the Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.1.5 CERTIFICATION OF THE CHIEF EXECUTIVE OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Harry K. Sideris, certify that: 1) I have reviewed this quarterly report on Form 10-Q of Duke Energy Florida, LLC; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements mad

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.1.1 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report of Duke Energy Corporation (“Duke Energy”) on Form 10-Q for the period ending March 31, 2025, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Harry K. Sideris, President and Chief Exe

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.2.7 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report of Duke Energy Indiana, LLC (“Duke Energy Indiana”) on Form 10-Q for the period ending March 31, 2025, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Brian D. Savoy, Executive Vice P

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.2.1 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report of Duke Energy Corporation (“Duke Energy”) on Form 10-Q for the period ending March 31, 2025, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Brian D. Savoy, Executive Vice President

Certification of the Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.2.3 CERTIFICATION OF THE CHIEF FINANCIAL OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Brian D. Savoy, certify that: 1) I have reviewed this quarterly report on Form 10-Q of Progress Energy, Inc.; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in

Certification of the Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.2.4 CERTIFICATION OF THE CHIEF FINANCIAL OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Brian D. Savoy, certify that: 1) I have reviewed this quarterly report on Form 10-Q of Duke Energy Progress, LLC; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made

1Q 2025 EPS

News Release Media Contact: Gillian Moore 24-Hour: 800.559.3853 Analyst Contact: Abby Motsinger Office: 704.382.7624 May 6, 2025 Duke Energy reports first-quarter 2025 financial results ▪First-quarter 2025 reported and adjusted EPS of $1.76 ▪Strong start to the year, driven by revenue growth across Electric and Gas utilities ▪Company advancing new generation to serve growing energy demand CHARLOTT

Certification of the Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.1.1 CERTIFICATION OF THE CHIEF EXECUTIVE OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Harry K. Sideris, certify that: 1) I have reviewed this quarterly report on Form 10-Q of Duke Energy Corporation; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made

Certification of the Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.2.7 CERTIFICATION OF THE CHIEF FINANCIAL OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Brian D. Savoy, certify that: 1) I have reviewed this quarterly report on Form 10-Q of Duke Energy Indiana, LLC; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made,

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.2.2 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report of Duke Energy Carolinas, LLC (“Duke Energy Carolinas”) on Form 10-Q for the period ending March 31, 2025, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Brian D. Savoy, Executive Vi

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.2.4 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report of Duke Energy Progress, LLC (“Duke Energy Progress”) on Form 10-Q for the period ending March 31, 2025, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Brian D. Savoy, Executive Vice

Certification of the Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.1.8 CERTIFICATION OF THE CHIEF EXECUTIVE OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Harry K. Sideris, certify that: 1) I have reviewed this quarterly report on Form 10-Q of Piedmont Natural Gas Company, Inc.; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the stat

Certification of the Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.2.6 CERTIFICATION OF THE CHIEF FINANCIAL OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Brian D. Savoy, certify that: 1) I have reviewed this quarterly report on Form 10-Q of Duke Energy Ohio, Inc.; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, i

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.1.2 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report of Duke Energy Carolinas, LLC (“Duke Energy Carolinas”) on Form 10-Q for the period ending March 31, 2025, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Harry K. Sideris, Chief Exec

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.2.3 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report of Progress Energy, Inc. (“Progress Energy”) on Form 10-Q for the period ending March 31, 2025, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Brian D. Savoy, Executive Vice Presiden

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.2.6 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report of Duke Energy Ohio, Inc. (“Duke Energy Ohio”) on Form 10-Q for the period ending March 31, 2025, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Brian D. Savoy, Executive Vice Presid

Certification of the Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.1.4 CERTIFICATION OF THE CHIEF EXECUTIVE OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Harry K. Sideris, certify that: 1) I have reviewed this quarterly report on Form 10-Q of Duke Energy Progress, LLC; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements ma

Certification of the Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.1.7 CERTIFICATION OF THE CHIEF EXECUTIVE OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Harry K. Sideris, certify that: 1) I have reviewed this quarterly report on Form 10-Q of Duke Energy Indiana, LLC; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements mad

Form of Performance Award Agreement

Exhibit 10.2 PERFORMANCE AWARD AGREEMENT Duke Energy Corporation (the "Corporation") grants to the individual named below ("Grantee"), in accordance with the terms of the Duke Energy Corporation 2023 Long-Term Incentive Plan, as it may be amended from time to time (the "Plan") and this Performance Award Agreement (the "Agreement"), the following number of Performance Shares (the "Award"), on the D

Certification of the Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.2.1 CERTIFICATION OF THE CHIEF FINANCIAL OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Brian D. Savoy, certify that: 1) I have reviewed this quarterly report on Form 10-Q of Duke Energy Corporation; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made,

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.2.5 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report of Duke Energy Florida, LLC (“Duke Energy Florida”) on Form 10-Q for the period ending March 31, 2025, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Brian D. Savoy, Executive Vice P

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.1.8 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report of Piedmont Natural Gas Company, Inc. (“Piedmont”) on Form 10-Q for the period ending March 31, 2025, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Harry K. Sideris, Chief Executive

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.1.4 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report of Duke Energy Progress, LLC (“Duke Energy Progress”) on Form 10-Q for the period ending March 31, 2025, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Harry K. Sideris, Chief Execut

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.1.3 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report of Progress Energy, Inc. (“Progress Energy”) on Form 10-Q for the period ending March 31, 2025, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Harry K. Sideris, Chief Executive Offic

Certification of the Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.1.2 CERTIFICATION OF THE CHIEF EXECUTIVE OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Harry K. Sideris, certify that: 1) I have reviewed this quarterly report on Form 10-Q of Duke Energy Carolinas, LLC; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements m

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.2.8 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report of Piedmont Natural Gas Company, Inc. (“Piedmont”) on Form 10-Q for the period ending March 31, 2025, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Brian D. Savoy, Executive Vice Pr

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.1.6 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report of Duke Energy Ohio, Inc. (“Duke Energy Ohio”) on Form 10-Q for the period ending March 31, 2025, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Harry K. Sideris, Chief Executive Off

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2025 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number Registrant, State of

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.1.5 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report of Duke Energy Florida, LLC (“Duke Energy Florida”) on Form 10-Q for the period ending March 31, 2025, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Harry K. Sideris, Chief Executiv

Certification of the Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.2.8 CERTIFICATION OF THE CHIEF FINANCIAL OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Brian D. Savoy, certify that: 1) I have reviewed this quarterly report on Form 10-Q of Piedmont Natural Gas Company, Inc.; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statem

###

Exhibit 99.1 24-Hour: 800.559.3853 May 2, 2025 Duke Energy announces key leadership appointments § Julie Janson, EVP and CEO, Duke Energy Carolinas, to retire after a distinguished 37-year career with the company § Kodwo Ghartey-Tagoe, Alex Glenn and Louis Renjel to be appointed to new leadership positions, reflecting the depth of Duke Energy’s leadership team § Cameron McDonald to join the compan

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 29, 2025

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 29, 2025 Commission file number Exact Name of Registrant as Specified in its Charter, State or other Jurisdiction of Incorporation, Address of Principal Executive Offices, Zip C

Entry into a Material Definitive Agreement, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 14, 2025 Commission file number Exact Name of Registrant as Specified in its Charter, State or other Jurisdiction of Incorporation, Address of Principal Executive Offices, Zip C

Amendment No. 2 and Consent, dated as of March 14, 2025, by and 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.

Exhibit 10.1 Execution Version AMENDMENT NO. 2 and Consent, dated as of March 14, 2025 (this “Agreement”), among DUKE ENERGY CORPORATION (the “Company”), DUKE ENERGY CAROLINAS, LLC (“Duke Energy Carolinas”), DUKE ENERGY OHIO, INC. (“Duke Energy Ohio”), DUKE ENERGY INDIANA, LLC (“Duke Energy Indiana”), DUKE ENERGY KENTUCKY, INC. (“Duke Energy Kentucky”), DUKE ENERGY PROGRESS, LLC (f/k/a PROGRESS EN

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.       )

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.       ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by R

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.       )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.       ) Filed by the Registrant x Filed by a Party other than the Registrant ¨ Check the appropriate box: ¨ Preliminary Proxy Statement ¨ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ¨

Articles of Merger of Diamond Acquisition Corporation into Progress Energy, Inc. and Articles of Incorporation of Progress Energy, Inc., effective July 2, 2012.

Exhibit 3.9 ARTICLES OF MERGER OF DIAMOND ACQUISITION CORPORATION INTO PROGRESS ENERGY, INC. Pursuant to North Carolina General Statutes Section 55-11-05, the undersigned entity does hereby submit the following Articles of Merger as the surviving corporation in a merger between two North Carolina corporations. 1.The name of the surviving corporation is Progress Energy, Inc., a corporation organize

Certification of the Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.2.5 CERTIFICATION OF THE CHIEF FINANCIAL OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Brian D. Savoy, certify that: 1) I have reviewed this annual report on Form 10-K of Duke Energy Florida, LLC; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2024 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period fromto Commission File Number Registrant, State of Incor

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.

EXHIBIT 24.1 DUKE ENERGY CORPORATION Power of Attorney 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, 2024 (Annual Report) The undersigned Duke Energy Corporation, a Delaware corporation, and certain of its officers and/or directors, do each hereby constitute and appoint Lynn J. Good, Brian D. Savoy, David S. Ma

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.2.4 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Annual Report of Duke Energy Progress, LLC (“Duke Energy Progress”) on Form 10-K for the period ending December 31, 2024 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Brian D. Savoy, Executive Vice

Certification of the Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.2.8 CERTIFICATION OF THE CHIEF FINANCIAL OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Brian D. Savoy, certify that: 1) I have reviewed this annual report on Form 10-K of Piedmont Natural Gas Company, Inc.; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statement

Duke Energy Corporation Clawback Policy

Exhibit 97 DUKE ENERGY CORPORATION CLAWBACK POLICY (Adopted as of September 20, 2023) 1.

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.2.6 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Annual Report of Duke Energy Ohio, Inc. (“Duke Energy Ohio”) on Form 10-K for the period ending December 31, 2024 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Brian D. Savoy, Executive Vice Preside

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.2.1 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Annual Report of Duke Energy Corporation (“Duke Energy”) on Form 10-K for the period ending December 31, 2024 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Brian D. Savoy, Executive Vice President a

Certification of the Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.2.4 CERTIFICATION OF THE CHIEF FINANCIAL OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Brian D. Savoy, certify that: 1) I have reviewed this annual report on Form 10-K of Duke Energy Progress, LLC; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, i

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.1.1 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Annual Report of Duke Energy Corporation (“Duke Energy”) on Form 10-K for the period ending December 31, 2024 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Lynn J. Good, Chair and Chief Executive Of

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.1.3 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Annual Report of Progress Energy, Inc. (“Progress Energy”) on Form 10-K for the period ending December 31, 2024 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Lynn J. Good, Chief Executive Officer of

Consent of Independent Registered Public Accounting Firm.

Exhibit 23.1.3 CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM We consent to the incorporation by reference in Registration Statement No. 333-267583-06 on Form S-3 of our report dated February 27, 2025, relating to the consolidated financial statements of Duke Energy Progress, LLC and subsidiaries appearing in this Annual Report on Form 10-K of Duke Energy Progress, LLC for the year ended

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.1.8 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Annual Report of Piedmont Natural Gas Company, Inc. (“Piedmont”) on Form 10-K for the period ending December 31, 2024 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Lynn J. Good, Chief Executive Offi

Certification of the Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.1.6 CERTIFICATION OF THE CHIEF EXECUTIVE OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Lynn J. Good, certify that: 1) I have reviewed this annual report on Form 10-K of Duke Energy Ohio, Inc.; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in lig

Consent of Independent Registered Public Accounting Firm.

Exhibit 23.1.7 CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM We consent to the incorporation by reference in Registration Statement No. 333-267583-01 on Form S-3 of our report dated February 27, 2025, relating to the consolidated financial statements of Piedmont Natural Gas Company, Inc. and subsidiaries appearing in this Annual Report on Form 10-K of Piedmont Natural Gas Company, Inc.

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.2.8 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Annual Report of Piedmont Natural Gas Company, Inc. (“Piedmont”) on Form 10-K for the period ending December 31, 2024 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Brian D. Savoy, Executive Vice Pre

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.1.4 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Annual Report of Duke Energy Progress, LLC (“Duke Energy Progress") on Form 10-K for the period ending December 31, 2024 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Lynn J. Good, Chief Executive O

Certified copy of resolution of the Board of Directors of the registrant authorizing power of attorney.

EXHIBIT 24.2 DUKE ENERGY CORPORATION CERTIFIED RESOLUTIONS Form 10-K Annual Report Resolutions FURTHER RESOLVED, that each officer and director who may be required to execute such 2024 Form 10-K or any amendments thereto (whether on behalf of the Corporation or as an officer or director thereof, or by attesting the seal of the Corporation or otherwise) be and hereby is authorized to execute a Powe

Certification of the Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.2.2 CERTIFICATION OF THE CHIEF FINANCIAL OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Brian D. Savoy, certify that: 1) I have reviewed this annual report on Form 10-K of Duke Energy Carolinas, LLC; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made,

Consent of Independent Registered Public Accounting Firm.

Exhibit 23.1.4 CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM We consent to the incorporation by reference in Registration Statement No. 333-267583-03 on Form S-3 of our report dated February 27, 2025, relating to the consolidated financial statements of Duke Energy Florida, LLC and subsidiaries appearing in this Annual Report on Form 10-K of Duke Energy Florida, LLC for the year ended D

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.2.5 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Annual Report of Duke Energy Florida, LLC (“Duke Energy Florida”) on Form 10-K for the period ending December 31, 2024 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Brian D. Savoy, Executive Vice Pr

Certification of the Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.1.4 CERTIFICATION OF THE CHIEF EXECUTIVE OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Lynn J. Good, certify that: 1) I have reviewed this annual report on Form 10-K of Duke Energy Progress, LLC; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in

Certification of the Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.1.5 CERTIFICATION OF THE CHIEF EXECUTIVE OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Lynn J. Good, certify that: 1) I have reviewed this annual report on Form 10-K of Duke Energy Florida, LLC; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in l

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.2.7 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Annual Report of Duke Energy Indiana, LLC (“Duke Energy Indiana”) on Form 10-K for the period ending December 31, 2024 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Brian D. Savoy, Executive Vice Pr

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.1.7 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Annual Report of Duke Energy Indiana, LLC (“Duke Energy Indiana”) on Form 10-K for the period ending December 31, 2024 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Lynn J. Good, Chief Executive Off

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.1.2 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Annual Report of Duke Energy Carolinas, LLC (“Duke Energy Carolinas”) on Form 10-K for the period ending December 31, 2024 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Lynn J. Good, Chief Executive

Consent of Independent Registered Public Accounting Firm.

Exhibit 23.1.5 CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM We consent to the incorporation by reference in Registration Statement No. 333-267583-05 on Form S-3 of our report dated February 27, 2025, relating to the consolidated financial statements of Duke Energy Ohio, Inc. and subsidiaries appearing in this Annual Report on Form 10-K of Duke Energy Ohio, Inc. for the year ended Decem

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.1.5 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Annual Report of Duke Energy Florida, LLC (“Duke Energy Florida") on Form 10-K for the period ending December 31, 2024 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Lynn J. Good, Chief Executive Off

Certification of the Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.2.7 CERTIFICATION OF THE CHIEF FINANCIAL OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Brian D. Savoy, certify that: 1) I have reviewed this annual report on Form 10-K of Duke Energy Indiana, LLC; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.2.3 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Annual Report of Progress Energy, Inc. (“Progress Energy”) on Form 10-K for the period ending December 31, 2024 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Brian D. Savoy, Executive Vice President

Certification of the Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.1.7 CERTIFICATION OF THE CHIEF EXECUTIVE OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Lynn J. Good, certify that: 1) I have reviewed this annual report on Form 10-K of Duke Energy Indiana, LLC; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in l

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.2.2 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Annual Report of Duke Energy Carolinas, LLC (“Duke Energy Carolinas”) on Form 10-K for the period ending December 31, 2024 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Brian D. Savoy, Executive Vic

Certification of the Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.1.2 CERTIFICATION OF THE CHIEF EXECUTIVE OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Lynn J. Good, certify that: 1) I have reviewed this annual report on Form 10-K of Duke Energy Carolinas, LLC; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in

By-Laws of Progress Energy, Inc. (formerly Diamond Acquisition Corporation), effective July 2, 2012.

Exhibit 3.10 BYLAWS OF DIAMOND ACQUISITION CORPORATION ARTICLE I OFFICES SECTION 1.0 l REGISTERED OFFICE - The registered office of Diamond Acquisition Corporation (the "Corporation") shall be established and maintained at the office of CT Corporation System, 150 Fayetteville Street, Box 1011, Raleigh, NC, 27601, and said CT Corporation System shall be the registered agent of t h e Corporation in

Certification of the Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.2.1 CERTIFICATION OF THE CHIEF FINANCIAL OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Brian D. Savoy, certify that: 1) I have reviewed this annual report on Form 10-K of Duke Energy Corporation; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in

Certification of the Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.1.8 CERTIFICATION OF THE CHIEF EXECUTIVE OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Lynn J. Good, certify that: 1) I have reviewed this annual report on Form 10-K of Piedmont Natural Gas Company, Inc.; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements

Certification of the Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.1.1 CERTIFICATION OF THE CHIEF EXECUTIVE OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Lynn J. Good, certify that: 1) I have reviewed this annual report on Form 10-K of Duke Energy Corporation; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in li

Certification of the Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.2.3 CERTIFICATION OF THE CHIEF FINANCIAL OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Brian D. Savoy, certify that: 1) I have reviewed this annual report on Form 10-K of Progress Energy, Inc.; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in li

Certification of the Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.2.6 CERTIFICATION OF THE CHIEF FINANCIAL OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Brian D. Savoy, certify that: 1) I have reviewed this annual report on Form 10-K of Duke Energy Ohio, Inc.; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in l

List of Subsidiaries

EXHIBIT 21 LIST OF SUBSIDIARIES The following is a list of certain Duke Energy subsidiaries (50% owned or greater) and their respective states or countries of incorporation as of December 31, 2024: 226HC 8me LLC (Delaware) Advance SC LLC (South Carolina) Baker House Apartments LLC (North Carolina) Bison Insurance Company Limited (South Carolina) Caldwell Power Company (North Carolina) Carofund, Inc.

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.1.6 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Annual Report of Duke Energy Ohio, Inc. (“Duke Energy Ohio”) on Form 10-K for the period ending December 31, 2024 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Lynn J. Good, Chief Executive Officer

Duke Energy Corporation Securities Trading Policy, as amended May 9, 2024

Exhibit 19 DUKE ENERGY CORPORATION SECURITIES TRADING POLICY Applicability: Enterprise Originator: Office of the General Counsel – Legal Department Approval: Duke Energy Corporation Board of Directors Effective Date: October 25, 2007 Last Amendment Date May 9, 2024 I.

Certification of the Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.1.3 CERTIFICATION OF THE CHIEF EXECUTIVE OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Lynn J. Good, certify that: 1) I have reviewed this annual report on Form 10-K of Progress Energy, Inc.; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in ligh

Consent of Independent Registered Public Accounting Firm.

Exhibit 23.1.2 CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM We consent to the incorporation by reference in Registration Statement No. 333-267583-02 on Form S-3 of our report dated February 27, 2025, relating to the consolidated financial statements of Duke Energy Carolinas, LLC and subsidiaries appearing in this Annual Report on Form 10-K of Duke Energy Carolinas, LLC for the year end

Consent of Independent Registered Public Accounting Firm.

EXHIBIT 23.1.1 CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM We consent to the incorporation by reference in Registration Statement Nos. 333-267693, 333-267583 and 333-284530 on Form S-3, and Registration Statement Nos. 333-271680, 333-213930, 333-210068, 333-203940, 333-172899, 333-168502, 333-168500, 333-141023 (including Post-effective Amendment No. 1 thereto), and 333-132933 (includ

Consent of Independent Registered Public Accounting Firm.

Exhibit 23.1.6 CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM We consent to the incorporation by reference in Registration Statement No. 333-267583-04 on Form S-3 of our report dated February 27, 2025, relating to the consolidated financial statements of Duke Energy Indiana, LLC and subsidiary appearing in this Annual Report on Form 10-K of Duke Energy Indiana, LLC for the year ended Dec

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 13, 2025 Commission File Number Exact Name of Registrant as Specified in its Charter, State or other Jurisdiction of Incorporation, Address of Principal Executive Offices, Zi

4Q 2024 EPS

EX-99.1 2 er-20241231xearningsreleas.htm EX-99.1 News Release Media Contact: Gillian Moore 24-Hour: 800.559.3853 Analyst Contact: Abby Motsinger Office: 704.382.7624 February 13, 2025 Duke Energy reports fourth-quarter and full-year 2024 financial results ▪2024 reported EPS of $5.71 and adjusted EPS of $5.90, closing the year within guidance range ▪Constructive regulatory outcomes in 2024 support

Duke Energy Indiana Summary of 2024 Rate Case Order (IURC Cause No. 46038)

Exhibit 99.1 Duke Energy Indiana Summary of 2024 Rate Case Order (IURC Cause No. 46038) •On April 4, 2024, Duke Energy Indiana (DEI) filed a general rate case with the Indiana Utility Regulatory Commission (IURC). This is the first base rate case filed by DEI since 2019. The filing requests an overall approximate 16.2% increase in retail revenues, or approximately $492 million: oThe rate case fili

Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 29, 2025 Commission file number Exact Name of Registrant as Specified in its Charter, State or other Jurisdiction of Incorporation, Address of Principal Executive Offices, Zip

Resolution of Duke Energy Corporation regarding Power of Attorney

Exhibit 24.2 DUKE ENERGY CORPORATION CERTIFICATE The undersigned officer of DUKE ENERGY CORPORATION, a Delaware corporation (the “Corporation”), does hereby certify that attached hereto is a true and complete copy of a resolution adopted at a meeting of the Board of Directors of the Corporation with respect to the Registration Statement, which resolution is presently in full force and effect. IN W

As filed with the Securities and Exchange Commission on January 27, 2025

TABLE OF CONTENTS As filed with the Securities and Exchange Commission on January 27, 2025 Registration No.

Calculation of Registration Fee Table

Calculation of Filing Fee Tables S-3 Duke Energy CORP Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effective Date Filing Fee Previously Paid in Connection with Unsold Securities to be Carried Forward Newly Registered Securities Fees to be Paid 1 Equity Common Stock 457(a) 2,396,762 $ 109.

Power of Attorney of certain officers and directors of Duke Energy Corporation

Exhibit 24.1 DUKE ENERGY CORPORATION POWER OF ATTORNEY Registration Statement on Form S-3 The undersigned Duke Energy Corporation, a Delaware corporation, and certain of its officers and directors, do each hereby constitute and appoint Michael P. Callahan, David S. Maltz and Elizabeth H. Jones, and each of them, to act as attorneys-in-fact for and in the respective names, places and stead of the u

Amendment to Change in Control Agreement between Harry K. Sideris and Duke Energy Corporation.

Exhibit 10.1 AMENDMENT TO AGREEMENT The change in control agreement by and between Harry K. Sideris and Duke Energy Corporation dated as of October 1, 2019 (the “Agreement”), as amended on May 8, 2024, is hereby further amended, effective as of April 1, 2025, as follows: 1. The first sentence of Section 4.1(B) of the Agreement is hereby deleted in its entirety and replaced with the following: “(B)

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 10, 2025 Commission File Number Exact Name of Registrant as Specified in its Charter, State or other Jurisdiction of Incorporation, Address of Principal Executive Offices, Zip

Duke Energy Board of Directors Appoints Harry Sideris as President and Chief Executive Officer, Effective April 1 Succeeds Lynn Good, Who Retires as Chair and CEO

Exhibit 99.1 Duke Energy Board of Directors Appoints Harry Sideris as President and Chief Executive Officer, Effective April 1 Succeeds Lynn Good, Who Retires as Chair and CEO § Sideris, a 29-year company veteran, also joins the board of directors; lead independent director Ted Craver becomes independent chair, both effective April 1 § In her more than 11 years as CEO, Good transformed Duke Energy

DUKE ENERGY CORPORATION DUKE ENERGY PREMIERNOTES® VARIABLE DENOMINATION FLOATING RATE DEMAND NOTES

Registration No. 333-267693 Filed Pursuant to Rule 424(b)(3) DUKE ENERGY CORPORATION DUKE ENERGY PREMIERNOTES® VARIABLE DENOMINATION FLOATING RATE DEMAND NOTES PRICING SUPPLEMENT (To Prospectus dated September 30, 2022) The Date of this Pricing Supplement is December 23, 2024 The Duke Energy PremierNotes Variable Denomination Floating Rate Demand Notes (the “Notes”) bear interest at a floating rat

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.2.8 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report of Piedmont Natural Gas Company, Inc. (“Piedmont”) on Form 10-Q for the period ending September 30, 2024, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Brian D. Savoy, Executive Vic

Certification of the Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.2.4 CERTIFICATION OF THE CHIEF FINANCIAL OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Brian D. Savoy, certify that: 1) I have reviewed this quarterly report on Form 10-Q of Duke Energy Progress, LLC; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made

Certification of the Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.2.1 CERTIFICATION OF THE CHIEF FINANCIAL OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Brian D. Savoy, certify that: 1) I have reviewed this quarterly report on Form 10-Q of Duke Energy Corporation; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made,

Certification of the Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.1.5 CERTIFICATION OF THE CHIEF EXECUTIVE OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Lynn J. Good, certify that: 1) I have reviewed this quarterly report on Form 10-Q of Duke Energy Florida, LLC; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, i

Certification of the Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.2.3 CERTIFICATION OF THE CHIEF FINANCIAL OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Brian D. Savoy, certify that: 1) I have reviewed this quarterly report on Form 10-Q of Progress Energy, Inc.; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number Registrant, Stat

3Q 2024 EPS

News Release Media Contact: Gillian Moore 24-Hour: 800.559.3853 Analyst Contact: Abby Motsinger Office: 704.382.7624 November 7, 2024 Duke Energy reports third-quarter 2024 financial results ▪Third-quarter 2024 reported EPS of $1.60 and adjusted EPS of $1.62 ▪Company restores 5.5 million outages from historic storm season ▪Robust economic development and population migration continue to support lo

Certification of the Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.2.5 CERTIFICATION OF THE CHIEF FINANCIAL OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Brian D. Savoy, certify that: 1) I have reviewed this quarterly report on Form 10-Q of Duke Energy Florida, LLC; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made,

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.2.6 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report of Duke Energy Ohio, Inc. (“Duke Energy Ohio”) on Form 10-Q for the period ending September 30, 2024, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Brian D. Savoy, Executive Vice Pr

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.2.3 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report of Progress Energy, Inc. (“Progress Energy”) on Form 10-Q for the period ending September 30, 2024, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Brian D. Savoy, Executive Vice Pres

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.2.1 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report of Duke Energy Corporation (“Duke Energy”) on Form 10-Q for the period ending September 30, 2024, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Brian D. Savoy, Executive Vice Presid

Certification of the Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.1.3 CERTIFICATION OF THE CHIEF EXECUTIVE OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Lynn J. Good, certify that: 1) I have reviewed this quarterly report on Form 10-Q of Progress Energy, Inc.; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in l

Certification of the Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.1.4 CERTIFICATION OF THE CHIEF EXECUTIVE OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Lynn J. Good, certify that: 1) I have reviewed this quarterly report on Form 10-Q of Duke Energy Progress, LLC; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made,

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.2.4 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report of Duke Energy Progress, LLC (“Duke Energy Progress”) on Form 10-Q for the period ending September 30, 2024, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Brian D. Savoy, Executive

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.1.4 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report of Duke Energy Progress, LLC (“Duke Energy Progress”) on Form 10-Q for the period ending September 30, 2024, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Lynn J. Good, Chief Execut

Certification of the Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.2.6 CERTIFICATION OF THE CHIEF FINANCIAL OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Brian D. Savoy, certify that: 1) I have reviewed this quarterly report on Form 10-Q of Duke Energy Ohio, Inc.; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, i

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.1.7 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report of Duke Energy Indiana, LLC (“Duke Energy Indiana”) on Form 10-Q for the period ending September 30, 2024, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Lynn J. Good, Chief Executiv

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.1.6 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report of Duke Energy Ohio, Inc. (“Duke Energy Ohio”) on Form 10-Q for the period ending September 30, 2024, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Lynn J. Good, Chief Executive Off

Certification of the Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.2.8 CERTIFICATION OF THE CHIEF FINANCIAL OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Brian D. Savoy, certify that: 1) I have reviewed this quarterly report on Form 10-Q of Piedmont Natural Gas Company, Inc.; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statem

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.1.5 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report of Duke Energy Florida, LLC (“Duke Energy Florida”) on Form 10-Q for the period ending September 30, 2024, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Lynn J. Good, Chief Executiv

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.1.2 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report of Duke Energy Carolinas, LLC (“Duke Energy Carolinas”) on Form 10-Q for the period ending September 30, 2024, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Lynn J. Good, Chief Exec

Certification of the Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.2.7 CERTIFICATION OF THE CHIEF FINANCIAL OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Brian D. Savoy, certify that: 1) I have reviewed this quarterly report on Form 10-Q of Duke Energy Indiana, LLC; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made,

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.2.7 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report of Duke Energy Indiana, LLC (“Duke Energy Indiana”) on Form 10-Q for the period ending September 30, 2024, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Brian D. Savoy, Executive Vi

Certification of the Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.1.1 CERTIFICATION OF THE CHIEF EXECUTIVE OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Lynn J. Good, certify that: 1) I have reviewed this quarterly report on Form 10-Q of Duke Energy Corporation; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in

Certification of the Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.2.2 CERTIFICATION OF THE CHIEF FINANCIAL OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Brian D. Savoy, certify that: 1) I have reviewed this quarterly report on Form 10-Q of Duke Energy Carolinas, LLC; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements mad

Certification of the Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.1.2 CERTIFICATION OF THE CHIEF EXECUTIVE OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Lynn J. Good, certify that: 1) I have reviewed this quarterly report on Form 10-Q of Duke Energy Carolinas, LLC; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made,

Certification of the Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.1.8 CERTIFICATION OF THE CHIEF EXECUTIVE OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Lynn J. Good, certify that: 1) I have reviewed this quarterly report on Form 10-Q of Piedmont Natural Gas Company, Inc.; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statemen

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 7, 2024 Commission File Number Exact Name of Registrant as Specified in its Charter, State or other Jurisdiction of Incorporation, Address of Principal Executive Offices, Zip

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.2.5 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report of Duke Energy Florida, LLC (“Duke Energy Florida”) on Form 10-Q for the period ending September 30, 2024, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Brian D. Savoy, Executive Vi

Certification of the Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.1.6 CERTIFICATION OF THE CHIEF EXECUTIVE OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Lynn J. Good, certify that: 1) I have reviewed this quarterly report on Form 10-Q of Duke Energy Ohio, Inc.; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.1.1 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report of Duke Energy Corporation (“Duke Energy”) on Form 10-Q for the period ending September 30, 2024, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Lynn J. Good, Chair and Chief Executi

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.2.2 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report of Duke Energy Carolinas, LLC (“Duke Energy Carolinas”) on Form 10-Q for the period ending September 30, 2024, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Brian D. Savoy, Executiv

Certification of the Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.1.7 CERTIFICATION OF THE CHIEF EXECUTIVE OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Lynn J. Good, certify that: 1) I have reviewed this quarterly report on Form 10-Q of Duke Energy Indiana, LLC; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, i

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.1.8 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report of Piedmont Natural Gas Company, Inc. (“Piedmont”) on Form 10-Q for the period ending September 30, 2024, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Lynn J. Good, Chief Executive

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.1.3 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report of Progress Energy, Inc. (“Progress Energy”) on Form 10-Q for the period ending September 30, 2024, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Lynn J. Good, Chief Executive Offic

and The Bank of New York Mellon Trust Company, N.A., as Trustee, and form of global debenture included therein

Exhibit 4.1 DUKE ENERGY CORPORATION TO THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A. Trustee Thirty-fourth Supplemental Indenture Dated as of August 22, 2024 $1,000,000,000 6.45% FIXED-TO-FIXED RESET RATE JUNIOR SUBORDINATED DEBENTURES DUE 2054 TABLE OF CONTENTS1 ARTICLE I 6.45% FIXED-TO-FIXED RESET RATE JUNIOR SUBORDINATED DEBENTURES DUE 2054 Section 1.01. Establishment 1 Section 1.02. Definiti

DUKE ENERGY Corporation $1,000,000,000 6.45% FIXED-TO-FIXED RESET RATE JUNIOR SUBORDINATED DEBENTURES DUE 2054 UNDERWRITING AGREEMENT

Exhibit 99.1 Execution Version DUKE ENERGY Corporation $1,000,000,000 6.45% FIXED-TO-FIXED RESET RATE JUNIOR SUBORDINATED DEBENTURES DUE 2054 UNDERWRITING AGREEMENT August 19, 2024 BofA Securities, Inc. Goldman Sachs & Co. LLC J.P. Morgan Securities LLC Morgan Stanley & Co. LLC RBC Capital Markets, LLC Santander US Capital Markets LLC Truist Securities, Inc. As Representatives of the several Under

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 22, 2024 DUKE ENERGY CORPORATION (Exact Name of Registrant as Specified in its Charter) Delaware 001-32853 20-2777218 (State or Other Jurisdiction of Incorporation) (Commission

Table 1: Newly Registered and Carry Forward Securities

Calculation of Filing Fee Tables S-3 Duke Energy CORP Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effective Date Filing Fee Previously Paid in Connection with Unsold Securities to be Carried Forward Newly Registered Securities Fees to be Paid 1 Debt 6.

$1,000,000,000 6.45% Fixed-to-Fixed Reset Rate Junior Subordinated Debentures due 2054

TABLE OF CONTENTS  Filed Purusant to Rule 424(b)(5)  Registration Statement No. 333-267583 PROSPECTUS SUPPLEMENT (To Prospectus dated September 23, 2022) $1,000,000,000 6.45% Fixed-to-Fixed Reset Rate Junior Subordinated Debentures due 2054 Duke Energy Corporation is offering $1,000,000,000 aggregate principal amount of 6.45% Fixed-to-Fixed Reset Rate Junior Subordinated Debentures due 2054 (the “

Duke Energy Corporation $1,000,000,000 6.45% Fixed-to-Fixed Reset Rate Junior Subordinated Debentures due 2054 Pricing Term Sheet

Filed pursuant to Rule 433 August 19, 2024 Relating to Preliminary Prospectus Supplement dated August 19, 2024 to Prospectus dated September 23, 2022 Registration Statement No.

Subject to Completion Preliminary Prospectus Supplement dated August 19, 2024

TABLE OF CONTENTS The information in this preliminary prospectus supplement and the accompanying prospectus is not complete and may be changed.

Certification of the Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.2.6 CERTIFICATION OF THE CHIEF FINANCIAL OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Brian D. Savoy, certify that: 1) I have reviewed this quarterly report on Form 10-Q of Duke Energy Ohio, Inc.; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, i

Certification of the Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.2.7 CERTIFICATION OF THE CHIEF FINANCIAL OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Brian D. Savoy, certify that: 1) I have reviewed this quarterly report on Form 10-Q of Duke Energy Indiana, LLC; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made,

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.2.7 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report of Duke Energy Indiana, LLC (“Duke Energy Indiana”) on Form 10-Q for the period ending June 30, 2024, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Brian D. Savoy, Executive Vice Pr

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.2.6 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report of Duke Energy Ohio, Inc. (“Duke Energy Ohio”) on Form 10-Q for the period ending June 30, 2024, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Brian D. Savoy, Executive Vice Preside

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.1.4 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report of Duke Energy Progress, LLC (“Duke Energy Progress”) on Form 10-Q for the period ending June 30, 2024, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Lynn J. Good, Chief Executive O

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.2.2 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report of Duke Energy Carolinas, LLC (“Duke Energy Carolinas”) on Form 10-Q for the period ending June 30, 2024, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Brian D. Savoy, Executive Vic

Certification of the Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.2.2 CERTIFICATION OF THE CHIEF FINANCIAL OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Brian D. Savoy, certify that: 1) I have reviewed this quarterly report on Form 10-Q of Duke Energy Carolinas, LLC; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements mad

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 6, 2024 Commission File Nu

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 6, 2024 Commission File Number Exact Name of Registrant as Specified in its Charter, State or other Jurisdiction of Incorporation, Address of Principal Executive Offices, Zip C

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.2.5 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report of Duke Energy Florida, LLC (“Duke Energy Florida”) on Form 10-Q for the period ending June 30, 2024, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Brian D. Savoy, Executive Vice Pr

Certification of the Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.1.4 CERTIFICATION OF THE CHIEF EXECUTIVE OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Lynn J. Good, certify that: 1) I have reviewed this quarterly report on Form 10-Q of Duke Energy Progress, LLC; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made,

Certification of the Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.1.6 CERTIFICATION OF THE CHIEF EXECUTIVE OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Lynn J. Good, certify that: 1) I have reviewed this quarterly report on Form 10-Q of Duke Energy Ohio, Inc.; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.1.7 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report of Duke Energy Indiana, LLC (“Duke Energy Indiana”) on Form 10-Q for the period ending June 30, 2024, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Lynn J. Good, Chief Executive Off

Certification of the Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.1.1 CERTIFICATION OF THE CHIEF EXECUTIVE OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Lynn J. Good, certify that: 1) I have reviewed this quarterly report on Form 10-Q of Duke Energy Corporation; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in

Certification of the Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.2.4 CERTIFICATION OF THE CHIEF FINANCIAL OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Brian D. Savoy, certify that: 1) I have reviewed this quarterly report on Form 10-Q of Duke Energy Progress, LLC; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made

2Q 2024 EPS

News Release Media Contact: Gillian Moore 24-Hour: 800.559.3853 Analyst Contact: Abby Motsinger Office: 704.382.7624 August 6, 2024 Duke Energy reports second-quarter 2024 financial results ▪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 mom

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.2.1 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report of Duke Energy Corporation (“Duke Energy”) on Form 10-Q for the period ending June 30, 2024, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Brian D. Savoy, Executive Vice President a

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.1.5 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report of Duke Energy Florida, LLC (“Duke Energy Florida”) on Form 10-Q for the period ending June 30, 2024, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Lynn J. Good, Chief Executive Off

Certification of the Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.1.8 CERTIFICATION OF THE CHIEF EXECUTIVE OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Lynn J. Good, certify that: 1) I have reviewed this quarterly report on Form 10-Q of Piedmont Natural Gas Company, Inc.; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statemen

Amendment to Duke Energy Corporation Executive Officer Severance Plan

EXHIBIT 10.2 AMENDMENT TO DUKE ENERGY CORPORATION EXECUTIVE SEVERANCE PLAN The Duke Energy Corporation Executive Severance Plan (the “Plan”) is hereby amended, effective May 8, 2024, as follows: 1. Section 2(u)(iii) of the Plan is hereby deleted in its entirety and replaced with the following: “(iii) only with respect to Tier I Participants, both a material diminution in the Participant’s authorit

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.2.4 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report of Duke Energy Progress, LLC (“Duke Energy Progress”) on Form 10-Q for the period ending June 30, 2024, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Brian D. Savoy, Executive Vice

Certification of the Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.2.1 CERTIFICATION OF THE CHIEF FINANCIAL OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Brian D. Savoy, certify that: 1) I have reviewed this quarterly report on Form 10-Q of Duke Energy Corporation; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made,

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.2.3 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report of Progress Energy, Inc. (“Progress Energy”) on Form 10-Q for the period ending June 30, 2024, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Brian D. Savoy, Executive Vice President

Certification of the Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.1.5 CERTIFICATION OF THE CHIEF EXECUTIVE OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Lynn J. Good, certify that: 1) I have reviewed this quarterly report on Form 10-Q of Duke Energy Florida, LLC; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, i

Certification of the Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.1.2 CERTIFICATION OF THE CHIEF EXECUTIVE OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Lynn J. Good, certify that: 1) I have reviewed this quarterly report on Form 10-Q of Duke Energy Carolinas, LLC; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made,

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.1.8 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report of Piedmont Natural Gas Company, Inc. (“Piedmont”) on Form 10-Q for the period ending June 30, 2024, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Lynn J. Good, Chief Executive Offi

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.1.2 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report of Duke Energy Carolinas, LLC (“Duke Energy Carolinas”) on Form 10-Q for the period ending June 30, 2024, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Lynn J. Good, Chief Executive

Certification of the Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.2.5 CERTIFICATION OF THE CHIEF FINANCIAL OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Brian D. Savoy, certify that: 1) I have reviewed this quarterly report on Form 10-Q of Duke Energy Florida, LLC; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made,

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.1.3 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report of Progress Energy, Inc. (“Progress Energy”) on Form 10-Q for the period ending June 30, 2024, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Lynn J. Good, Chief Executive Officer of

Amendment to Duke Energy Corporation Executive Officer

EXHIBIT 10.1 AMENDMENT TO AGREEMENT The change in control agreement by and between [●] and Duke Energy Corporation dated as of [●] (the “Agreement”), is hereby amended, effective as of [●], 2024, as follows: 1. Section 1(T)(iii) of the Agreement is hereby deleted in its entirety and replaced with the following: “(iii) both a material diminution in the Executive’s authority, duties or responsibilit

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.1.6 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report of Duke Energy Ohio, Inc. (“Duke Energy Ohio”) on Form 10-Q for the period ending June 30, 2024, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Lynn J. Good, Chief Executive Officer

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number Registrant, State of

Certification of the Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.1.3 CERTIFICATION OF THE CHIEF EXECUTIVE OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Lynn J. Good, certify that: 1) I have reviewed this quarterly report on Form 10-Q of Progress Energy, Inc.; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in l

Certification of the Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.2.8 CERTIFICATION OF THE CHIEF FINANCIAL OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Brian D. Savoy, certify that: 1) I have reviewed this quarterly report on Form 10-Q of Piedmont Natural Gas Company, Inc.; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statem

Certification of the Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.1.7 CERTIFICATION OF THE CHIEF EXECUTIVE OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Lynn J. Good, certify that: 1) I have reviewed this quarterly report on Form 10-Q of Duke Energy Indiana, LLC; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, i

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.2.8 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report of Piedmont Natural Gas Company, Inc. (“Piedmont”) on Form 10-Q for the period ending June 30, 2024, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Brian D. Savoy, Executive Vice Pre

Certification of the Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.2.3 CERTIFICATION OF THE CHIEF FINANCIAL OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Brian D. Savoy, certify that: 1) I have reviewed this quarterly report on Form 10-Q of Progress Energy, Inc.; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.1.1 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report of Duke Energy Corporation (“Duke Energy”) on Form 10-Q for the period ending June 30, 2024, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Lynn J. Good, Chair and Chief Executive Of

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 15, 2024

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 15, 2024 Commission file number Registrant, State of Incorporation or Organization, Address of Principal Executive Offices and Telephone Number IRS Employer Identification No. 1-

Duke Energy Florida Summary of 2024 Florida Proposed Settlement Agreement (Docket #20240025)

Exhibit 99.1 Duke Energy Florida Summary of 2024 Florida Proposed Settlement Agreement (Docket #20240025) Background: · On April 2, 2024, Duke Energy Florida (“DEF”) filed a request for new base rates with the Florida Public Service Commission (“FPSC”). The company proposed a three-year rate plan that would begin in January 2025, once its current base rate settlement agreement concludes at the end

Duke Energy Carolinas Summary of 2024 South Carolina Rate Case Order (Docket 2023-388-E)

Exhibit 99.1 Duke Energy Carolinas Summary of 2024 South Carolina Rate Case Order (Docket 2023-388-E) Background: · On January 4, 2024, Duke Energy Carolinas (DEC) filed a rate case with the Public Service Commission of South Carolina (PSCSC) to request an increase in retail revenues. This is the first base rate case filed by DEC in South Carolina since 2018. The filing requests an overall average

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 3, 2024

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 3, 2024 Commission file number Registrant, State of Incorporation or Organization, Address of Principal Executive Offices and Telephone Number IRS Employer Identification No. 1-3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 11-K ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Year Ended December 31, 2023 DUKE ENERGY RETIREMENT SAVINGS PLAN Commission File

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 11-K ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Year Ended December 31, 2023 of DUKE ENERGY RETIREMENT SAVINGS PLAN Commission File Number 1-32853 Issuer of Securities held pursuant to the Plan is DUKE ENERGY CORPORATION 525 South Tryon Street Charlotte, North Carolina 28202 DUK

Thirty-third Supplemental Indenture, dated as of June 7, 2024, to the Indenture, dated as of June 3, 2008, between the

Exhibit 4.1 DUKE ENERGY CORPORATION TO THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A. Trustee Thirty-third Supplemental Indenture Dated as of June 7, 2024 $750,000,000 5.45% SENIOR NOTES DUE 2034 $750,000,000 5.80% SENIOR NOTES DUE 2054 TABLE OF CONTENTS1 ARTICLE I 5.45% SENIOR NOTES DUE 2034 Section 1.01. Establishment 1 Section 1.02. Definitions 2 Section 1.03. Payment of Principal and Interest

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 7, 2024 DUKE ENERGY CORPORATION (Exact Name of Registrant as Specified in its Charter) Delaware 001-32853 20-2777218 (State or Other Jurisdiction of Incorporation) (Commission Fi

DUKE ENERGY Corporation $750,000,000 5.45% SENIOR NOTES DUE 2034 $750,000,000 5.80% SENIOR NOTES DUE 2054 UNDERWRITING AGREEMENT

Exhibit 99.1 Execution Version DUKE ENERGY Corporation $750,000,000 5.45% SENIOR NOTES DUE 2034 $750,000,000 5.80% SENIOR NOTES DUE 2054 UNDERWRITING AGREEMENT June 5, 2024 BofA Securities, Inc. Citigroup Global Markets Inc. Mizuho Securities USA LLC MUFG Securities Americas Inc. PNC Capital Markets LLC SMBC Nikko Securities America, Inc. Wells Fargo Securities, LLC As Representatives of the sever

$1,500,000,000 $750,000,000 5.45% Senior Notes due 2034 $750,000,000 5.80% Senior Notes due 2054

TABLE OF CONTENTS   Filed Pursuant to Rule 424(b)(5)    Registration No. 333-267583 PROSPECTUS SUPPLEMENT (To Prospectus dated September 23, 2022) $1,500,000,000 $750,000,000 5.45% Senior Notes due 2034 $750,000,000 5.80% Senior Notes due 2054 Duke Energy Corporation is offering $1,500,000,000 aggregate principal amount of Senior Notes in two new series. We are offering (i) $750,000,000 aggregate

Calculation of Filing Fee Table (1) (Form Type) Duke Energy Corporation (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered Securities

Exhibit 107.1 Calculation of Filing Fee Table (1) 424(b)(5) (Form Type) Duke Energy Corporation (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Fees to Be

Subject to Completion Preliminary Prospectus Supplement dated June 5, 2024

TABLE OF CONTENTS The information in this preliminary prospectus supplement and the accompanying prospectus is not complete and may be changed.

Duke Energy Corporation $750,000,000 5.45% Senior Notes due 2034 $750,000,000 5.80% Senior Notes due 2054 Pricing Term Sheet

Filed pursuant to Rule 433 June 5, 2024 Relating to Preliminary Prospectus Supplement dated June 5, 2024 to Prospectus dated September 23, 2022 Registration Statement No.

Duke Energy Corporation (incorporated by refer

Exhibit 3.1 AMENDED AND RESTATED BY-LAWS OF DUKE ENERGY CORPORATION A Delaware corporation Effective as of December 14, 2023 May 9, 2024 TABLE OF CONTENTS ARTICLE I Offices 1 Section 1.01 Principal Office 1 Section 1.02 Registered Office and Agent 1 Section 1.03 Other Offices 1 ARTICLE II Stockholders 1 Section 2.01 Place of Stockholders’ Meetings 1 Section 2.02 Day and Time of Annual Meetings of

Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 9, 2024 Commission File Number Exact Name of Registrant as Specified in its Charter, State or other Jurisdiction of Incorporation, Address of Principal Executive Offices, Zip Code

Certification of the Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.1.4 CERTIFICATION OF THE CHIEF EXECUTIVE OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Lynn J. Good, certify that: 1) I have reviewed this quarterly report on Form 10-Q of Duke Energy Progress, LLC; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made,

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.2.2 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report of Duke Energy Carolinas, LLC (“Duke Energy Carolinas”) on Form 10-Q for the period ending March 31, 2024, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Brian D. Savoy, Executive Vi

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 7, 2024 Commission File Number Exact Name of Registrant as Specified in its Charter, State or other Jurisdiction of Incorporation, Address of Principal Executive Offices, Zip Code

Certification of the Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.1.2 CERTIFICATION OF THE CHIEF EXECUTIVE OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Lynn J. Good, certify that: 1) I have reviewed this quarterly report on Form 10-Q of Duke Energy Carolinas, LLC; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made,

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.1.3 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report of Progress Energy, Inc. (“Progress Energy”) on Form 10-Q for the period ending March 31, 2024, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Lynn J. Good, Chief Executive Officer o

Certification of the Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.2.7 CERTIFICATION OF THE CHIEF FINANCIAL OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Brian D. Savoy, certify that: 1) I have reviewed this quarterly report on Form 10-Q of Duke Energy Indiana, LLC; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made,

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.2.5 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report of Duke Energy Florida, LLC (“Duke Energy Florida”) on Form 10-Q for the period ending March 31, 2024, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Brian D. Savoy, Executive Vice P

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.1.2 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report of Duke Energy Carolinas, LLC (“Duke Energy Carolinas”) on Form 10-Q for the period ending March 31, 2024, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Lynn J. Good, Chief Executiv

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.2.4 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report of Duke Energy Progress, LLC (“Duke Energy Progress”) on Form 10-Q for the period ending March 31, 2024, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Brian D. Savoy, Executive Vice

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.2.6 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report of Duke Energy Ohio, Inc. (“Duke Energy Ohio”) on Form 10-Q for the period ending March 31, 2024, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Brian D. Savoy, Executive Vice Presid

Certification of the Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 31.1.1 CERTIFICATION OF THE CHIEF EXECUTIVE OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Lynn J. Good, certify that: 1) I have reviewed this quarterly report on Form 10-Q of Duke Energy Corporation; 2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EXHIBIT 32.2.7 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report of Duke Energy Indiana, LLC (“Duke Energy Indiana”) on Form 10-Q for the period ending March 31, 2024, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Brian D. Savoy, Executive Vice P