Form 8-K

8-K — Duke Energy CORP

Accession: 0001104659-26-080476

Filed: 2026-07-06

Period: 2026-07-02

CIK: 0001326160

SIC: 4931 (ELECTRIC & OTHER SERVICES COMBINED)

Item: Regulation FD Disclosure

Item: Financial Statements and Exhibits

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EX-99.1 — EXHIBIT 99.1 (tm2619723d1_ex99-1.htm)

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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 2, 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

1-04928

DUKE ENERGY CAROLINAS, LLC

(a North Carolina limited liability company)

525 South Tryon Street

Charlotte,

North

Carolina 28202

800-488-3853

56-0205520

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

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 July 2, 2026, Duke Energy

Carolinas, LLC (“DEC”) reached a partial settlement (the “Stipulation”) with the Public Staff – North Carolina

Utilities Commission (the “Public Staff”) in connection with DEC'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 Stipulation will be filed next week. The Stipulation includes, among other things, agreement on certain

operating and maintenance costs and project-specific capital expenditures, rider mechanisms, and accounting adjustments.

The Stipulation does not include

an agreement on return on equity, capital structure, certain capital investments including the overall Multi-Year Rate Plan capital program,

depreciation and decommissioning, storm-related cost recovery, or performance incentive mechanisms, among other items.

The Stipulation will result in

a one-time pre-tax accounting charge of approximately $10 million, to be recognized in the second quarter of 2026.

An overview providing additional

detail on the Stipulation 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 Carolinas, LLC Fact Sheet Regarding 2026 Partial

Stipulation.

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: July 6, 2026

By:

/s/ David S. Maltz

Name:

David S. Maltz

Title:

Vice President, Corporate Legal Support, Chief Governance Officer and Corporate Secretary

DUKE

ENERGY CAROLINAS, LLC

Date: July 6, 2026

By:

/s/ David S. Maltz

Name:

David S. Maltz

Title:

Vice President, Chief Governance Officer, Corporate Secretary and Mergers and Acquisitions

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EX-99.1 — EXHIBIT 99.1

EX-99.1

Filename: tm2619723d1_ex99-1.htm · Sequence: 2

Exhibit 99.1

Duke Energy Carolinas, LLC

Updates Regarding the 2025 Rate Case Filings

in North Carolina

(Docket E-7 Sub 1329)

Background:

· On November 20, 2025, Duke Energy Carolinas (DEC) 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 15.0% overall increase in retail revenues over the two-year period, or approximately

$1,002 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 10.1% 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 $26.5 billion as of December

31, 2024, adjusted for known and measurable changes projected through March 31, 2026.

◦ The MYRP includes impacts of approximately $4.4 billion (NC retail allocation) of capital projects that are projected to go in service

over the 2-year MYRP period.

· On June 19, 2026, the Company filed an updated revenue requirement request

as part of the Company’s rebuttal testimony which reduced the requested increase to approximately $622 million over the two-year

period, which is an approximate 9.3% 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 capital structure, and has made certain other adjustments to reduce the requested

increase including withdrawing the proposed depreciation study, accelerating the amortization period for the Helene storm securitization

reconciliation, and removing Winter Storm Fern from the case to pursue future securitization.

· On July 2, 2026, DEC and the Public Staff - North Carolina Utilities Commission

(“Public Staff”) filed an Agreement and Stipulation of Partial Settlement (the “Stipulation”) with the NCUC resolving

certain issues in the case.

Major Components of the Stipulation

· The Stipulation resolves a variety of accounting and plant items and adjustments

in the case, including: payroll and benefits, bad debt expense, coal ash compliance costs amortization period, continuation of the transmission

cost allocation adjustment, and a compromised resolution on specific distribution, solar, microgrid, and other plant adjustments and smaller

adjustments proposed in the case. For the proposed MYRP2 capital program, the Stipulation resolves discrete project-level items —

including limiting the Distribution Substation and Line program reduction to the equipment retrofit program and preserving the Company's

ongoing O&M estimate — while leaving the broader MYRP2 capital disputes for litigation.

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.

· While the Stipulation does not resolve the MYRP2 proposal or the broader

MYRP2 capital disputes, it does resolve certain discrete project-level adjustments to the proposed MYRP capital projects, if the MYRP

is approved by the NCUC, for hearing efficiency.

Key issues on which the parties have not reached a compromise include

the following – these issues will be litigated at hearing:

· Performance Based Ratemaking application including the proposed MYRP2, PIMs,

and Decoupling and ESM

· ROE and capital structure

· Storm related matters such as the Hurricane Helene securitization reconciliation,

Winter Storm Fern recovery, and the storm reserve request

· Customer growth, related large load plant allocation, and large load interconnection

facilities/CIAC

· Large load tariff

· Depreciation Study

· Incentive compensation, rate case expenses, and other contested O&M items

Additional Information:

· The Stipulation is subject to the review and approval of the NCUC.

· An evidentiary hearing to review the Stipulation and remaining issues in

the case is scheduled to commence July 7, 2026.

· Subject to NCUC approval, DEC has requested total Year 1 rates to be in effect

no later than January 1, 2027.

· The Stipulation will result in a one-time pre-tax accounting charge of approximately $10 million, to be recognized in 2nd quarter

of 2026.

Reconciliation of Company Request to Reflect Stipulation

($ in millions)

Historic

Base

Case

Year 1 -

MYRP

Year 1

Total

Year 2 –

MYRP

Combined

Total

Original requested revenue requirement increase

595

132

727

275

1,002

Post-filing, pre-Stipulation adjustments

(334 )

(17 )

(351 )

(29 )

(380 )

Revised Company requested revenue requirement increase

262

115

376

246

622

Adjustments agreed to in partial stipulation

(61 )

(1 )

(62 )

(4 )

(66 )

Company requested revenue requirement increase considering agreed upon items

201

114

315

241

556

Net annualized customer rate increase

3.0 %

1.7 %

4.7 %

3.6 %

8.3 %

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.

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