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, 2026

Commission file number	Registrant, State of Incorporation or Organization, Address of Principal Executive Offices and Telephone Number	IRS Employer Identification No.

1-32853	DUKE ENERGY CORPORATION (a Delaware corporation) 525 South Tryon Street Charlotte, North Carolina 28202 800-488-3853	20-2777218
1-3382	DUKE ENERGY PROGRESS, LLC (a North Carolina limited liability company) 411 Fayetteville Street Raleigh, North Carolina 27601 800-488-3853	56-0165465

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

¨ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

¨ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

¨ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

¨ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

SECURITIES REGISTERED PURSUANT TO SECTION 12(b) OF THE ACT:

Registrant	Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Duke Energy	Common Stock, $0.001 par value	DUK	New York Stock Exchange LLC
Duke Energy	5.625% Junior Subordinated Debentures due September 15, 2078	DUKB	New York Stock Exchange LLC
Duke Energy	Depositary Shares each representing a 1/1,000th interest in a share of 5.75% Series A Cumulative Redeemable Perpetual Preferred Stock, par value $0.001 per share	DUK PR A	New York Stock Exchange LLC
Duke Energy	3.10% Senior Notes due 2028	DUK 28A	New York Stock Exchange LLC
Duke Energy	3.85% Senior Notes due 2034	DUK 34	New York Stock Exchange LLC
Duke Energy	3.75% Senior Notes due 2031	DUK31A	New York Stock Exchange LLC

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ¨

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ¨

Item 7.01. Regulation FD Disclosure.

On August 5, 2026, Duke Energy Progress, LLC (“DEP”) filed a Comprehensive Revenue Requirement Settlement (the “Comprehensive Settlement”) with the Public Staff – North Carolina Utilities Commission (the “Public Staff”) and other intervenors (together, “Intervening Parties”) in connection with DEP's application for adjustment of rates and charges and for Performance Based Regulation (“PBR”) filed with the North Carolina Utilities Commission (“NCUC”) on November 20, 2025. Testimony consistent with the Comprehensive Settlement will be filed by the end of the week. The Comprehensive Settlement resolves all revenue requirement items in the case including, among other things, (i) a return on equity of 9.8% based on a capital structure of 53% equity component in the capital structure, (ii) a retail rate base of approximately $17.8 billion for the historic base case, (iii) approximately $3.4 billion of capital in the multi-year rate plan (“MYRP”) along with an annual MYRP refund mechanism, and (iv) agreement to evaluate a one-year rate case stay out under which DEP would not file a base rate case earlier than November 1, 2028, so long as the NCUC grants deferral of cost of certain new generating assets.

The Comprehensive Settlement is expected to result in one-time pre-tax accounting charges of approximately $30 million, to be recognized in 2026. These charges are expected to be treated as special items and excluded from adjusted earnings.

An overview providing additional detail on the Comprehensive Settlement is attached to this Form 8-K as Exhibit 99.1. The information in Exhibit 99.1 is being furnished pursuant to this Item 7.01 and shall not be deemed “filed” for purposes of Section 18 of the Securities and Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that section.

Item 9.01. Financial Statements and Exhibits.

(d) Exhibits.

99.1	Duke Energy Progress, LLC Fact Sheet Regarding 2026 Comprehensive Settlement.
104	Cover Page Interactive Data File (the cover page XBRL tags are embedded in the Inline XBRL document).

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

	DUKE ENERGY CORPORATION
Date: August 5, 2026	By:	/s/ David S. Maltz
	Name: David S. Maltz
	Title: Vice President, Chief Governance Officer, Corporate Secretary and Mergers and Acquisitions

	DUKE ENERGY PROGRESS, LLC
Date: August 5, 2026	By:	/s/ David S. Maltz
	Name: David S. Maltz
	Title: Vice President, Chief Governance Officer, Corporate Secretary and Mergers and Acquisitions

Exhibit 99.1

Duke Energy Progress, LLC

Updates Regarding the 2025 Rate Case Filings in North Carolina

(Docket E-2 Sub 1380)

Background:

On November 20, 2025, Duke Energy Progress (“DEP” or the “Company”) filed a rate case with the North Carolina Utilities Commission (“NCUC”) seeking approval for increases in retail revenues. The filing included requests for Performance Based Regulation (“PBR”) mechanisms, featuring a 2-year Multi-Year Rate Plan (“MYRP”) as well as residential decoupling, performance incentive mechanisms (“PIMs”), and an earnings sharing mechanism (“ESM”).

◦

The initial filing requested an approximately 15.1% overall increase in retail revenues over the two-year period, or approximately $729 million.

◦

The rate case filing requested an overall rate of return of 7.92% based upon an ROE of 10.95% with a 53% equity component in the capital structure¹ as compared to the ROE approved in the last rate case of 9.8% with a 53% equity component in the capital structure.

◦

The historic base case in the initial filing is based on North Carolina retail rate base of approximately $17.9 billion as of December 31, 2024, adjusted for known and measurable changes projected through March 31, 2026.

◦

The MYRP includes impacts of approximately $3.9 billion (NC retail allocation) of capital projects that are projected to go in service over the 2-year MYRP period.

·	On July 24, 2026, the Company filed an updated revenue requirement request as part of the Company’s rebuttal testimony, which reduced the requested increase to approximately $610 million over the two-year period, which is an approximate 12.3% overall increase in retail revenues.

As part of the revised revenue requirement request, the Company has requested a 10.48% ROE with a 53% equity component in the capital structure and made certain other adjustments to reduce the requested increase.

·	On August 5, 2026, DEP and the Public Staff, as well as other intervening parties (together, the “Intervening Parties”), filed a Comprehensive Revenue Requirement Settlement (“Comprehensive Settlement”) with the NCUC resolving all remaining revenue requirement issues in the case.

Major Components of the Comprehensive Settlement

·	The Comprehensive Settlement resolves all revenue requirement issues between the Company and the Intervening Parties in the case, including agreement on 9.8% ROE and 53% equity component in the capital structure and various accounting and plant items.
·	The historic base case is based on North Carolina retail rate base of approximately $17.8 billion
·	The MYRP will include approximately $3.4 billion of capital (NC retail allocation) projected to go in service over the 2-year MYRP period, along with an annual MYRP refund mechanism (based upon both the number of projects and amount of capital placed in service in a rate year compared to what was approved for that rate year).
·	The Comprehensive Settlement resolves issues related to the mechanics of the decoupling mechanism and ESM.
·	DEP will extend the amortization of deferred coal ash costs from five years to eight years.

¹ Overall rate of return includes the provisions of the CCR settlement which includes a 150 basis point reduction in the ROE with a 52% equity component for the capital structure allowed for coal ash deferrals during the amortization period.

·	DEP will increase the flow back of production tax credits (PTC) to customers from $40 million annually in the Company’s original request to $120 million annually for 2027 and 2028.
·	DEP agrees to a $10 million shareholder contribution to support bill assistance through the Share the Light Fund and health and safety repairs through the Helping Home Fund.
·	The Company will evaluate the potential to delay its next base rate case filing until no earlier than November 1, 2028. The Company has indicated that it can agree to this delay if permitted to defer costs directly associated with the Commission-approved Person County CC1 and Marshall CTs, from the time each plant is placed in service until such costs can be reflected in new base rates with a full Weighted Average Cost of Capital (“WACC”) during the deferral period.
·	The parties agree to support a separate proceeding to evaluate a large load tariff, with the intention to complete that proceeding prior to new rates going into effect.
·	The Comprehensive Settlement results in a revised revenue requirement increase of $338 million over the two-year period, an average annual rate increase of 3.4% over two years.

Additional Information:

·	The Comprehensive Settlement is subject to the review and approval of the NCUC.
·	An evidentiary hearing to review the Comprehensive Settlement and other issues in the case is scheduled to begin on August 11, 2026.
·	Subject to NCUC approval, DEP has requested total Year 1 rates to be in effect no later than January 1, 2027.
·	The Comprehensive Settlement is expected to result in one-time pre-tax accounting charges of approximately $30 million, to be recognized by DEP in 2026. These charges are expected to be treated as special items and excluded from adjusted earnings.

Reconciliation of Company Request to Reflect the Comprehensive Settlement

($ in millions)	Historic Base Case			Year 1 - MYRP			Year 1 Total			Year 2 – MYRP			Combined Total
Original requested revenue requirement increase	$	401		$	127		$	528		$	200		$	729
Post-filing adjustments by Company		(82	)		(17	)		(99	)		(19	)		(119	)
Revised Company requested revenue requirement increase	$	319		$	110		$	429		$	181		$	610
Reduced ROE (10.48% to 9.8%)		(84	)		(4	)		(87	)		(6	)		(93	)
MYRP adjustments		--			(12	)		(12	)		(22	)		(34	)
Extended amortization of deferred coal ash costs		(28	)		--			(28	)		--			(28	)
Increased PTC giveback		(80	)		--			(80	)		--			(80	)
Other stipulated adjustments		(37	)		--			(37	)		--			(37	)
Revised revenue requirement increase after Comprehensive Settlement	$	90		$	94		$	185		$	153		$	338
Net annualized customer rate increase		1.8	%		1.9	%		3.7	%		3.1	%		6.8	%

Note: Totals may not add due to rounding

Cautionary Statement Regarding Forward-Looking Statements

This document includes forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. Forward-looking statements are based on management’s beliefs and assumptions. These forward-looking statements are identified by terms and phrases such as "anticipate," "believe," "intend," "estimate," "expect," "continue," "should," "could," "may," "plan," "project," "predict," "will," "potential," "forecast," "target," "outlook," "guidance," and similar expressions. Various factors may cause actual results to be materially different than the suggested outcomes within forward-looking statements; accordingly, there is no assurance that such results will be realized. These risks and uncertainties are identified and discussed in Duke Energy’s Form 10-K for the year ended December 31, 2025, and subsequent quarterly reports filed with the Securities and Exchange Commission (“SEC”) and available at the SEC’s website at www.sec.gov. In light of these risks, uncertainties and assumptions, the events described in the forward-looking statements might not occur or might occur to a different extent or at a different time than Duke Energy has described. Duke Energy expressly disclaims an obligation to publicly update or revise any forward-looking statements, whether as a result of new information, future events or otherwise.