NOTICE OF FILING Application of Duke Energy Carolinas, LLC for Approval of New Cost Recovery Mechanism and Portfolio of Demand-Side Management and Energy Efficiency Programs (See Docket No. 2024-303-E) Docket No. 2013-298-E Why is this Notice Important? • This Notice is for electric customers of Duke Energy Carolinas, LLC (“DEC” or the “Company”) and interested persons. The Company filed an Application on October 13, 2025, seeking approval of a new demand response (“DR”) program and a modification to an existing DR program with the Public Service Commission of South Carolina (“Commission”). The Commission decides whether these proposals will be approved. What is the Company asking the Commission to approve? • The Company’s Application requests that the Commission approve the following: o New DR Program: The Company is requesting approval of a new DR program entitled NonResi- dential Storage Demand Response Program (the “Storage DR Program”). o Modification to Existing DR Program: The Company is requesting approval of modifications to its existing Commission-approved DR program entitled PowerShare® Nonresidential Load Curtailment Program (the “PowerShare Program”). Why is the Company Requesting These Approvals? • These proposals are directly responsive to stakeholder feedback. An overview of each proposal is outlined below. Additional details are included in the Company’s Application. o New DR Program: • The Company designed the Storage DR Program to increase participation in, and expand the benefits of, energy dispatch across commercial, industrial, governmental, and other non-resi- dential customer groups. • This program offers incentives to non-residential customers that make their energy storage system available for the Company to control (i.e., charge, discharge, or store energy) during certain DR events (a minimum level of 30 control events a year and a maximum of 36 con- trol events annually for up to 4 hours during each event). • In return, customers will be paid certain incentives, including a monthly capacity credit and an energy credit, for the energy dispatched from their installed equipment during such event(s). o Modification to Existing DR Program: • The Company designed the modifications to the PowerShare Program to provide customers with flexibility under the existing program and increase participation. • The existing PowerShare Program offers incentives to non-residential customers that effectively manage their energy consumption upon 30-minutes notice from the Company, thereby providing the Company with a source of capacity across the entire year through load reduction. • The modifications in the Application provide additional tiered notification windows (10 min- utes and 120 minutes), along with corresponding tiered incentive levels. The Company also proposes to incorporate an automatic control option into the existing program, which would allow customers to automatically curtail their load upon notification from the Company. The Company’s Application states that the Storage DR Program and the PowerShare Program, as mod- ified by the Application, are cost-effective under the Utility Cost Test, Total Resource Cost Test, and the Ratepayer Impact Measure Test. The Company is not seeking an increase in rates at this time. These modifications were filed according to S.C. Code Ann. Section 58-27-820 and S.C. Code Ann. Sections 58-37-10 et seq. and S.C. Code Ann. Regs. 103-823, Order No. 2024-445, Order No. 2021-33, Order No. 2025-669 and the Rules of Practice and Procedure of the Commission. For the Company’s complete proposal visit: https://dms.psc.sc.gov/Attachments/Matter/6f4cf9d0-7a7c- 4137-bc7f-5f16838b7d52 For the entire Case visit: https://dms.psc.sc.gov/Web/Dockets/Detail/114654 Who Can I Talk to About This Notice? Duke Energy Carolinas, LLC 803-988-7132 Office of Regulatory Staff 803-737-5230 or 1-800-922-1531 Department of Consumer Affairs 803-734-4200 or 1-800-922-1594 Public Service Commission 803-896-5100 How Can I Participate in this Case? A stakeholder may participate in the case by the ways listed below. Option A: File a Letter of Protest by • Emailing the completed Letter of Protest to contact@psc.sc.gov; or • Mailing the completed Letter of Protest to 101 Executive Center Drive, Suite 100, Columbia, SC 29210. More information is available here: https://psc.sc.gov/consumer-info/file-letter-protest Option B: File a Petition to Intervene. An Intervenor becomes a party in the case. Intervenors have the right to testify, cross-examine witnesses, seek reconsideration of the Commission’s Final Decision, and must follow the Commission’s Rules of Practice and Procedure. To intervene, you must: • Email a Petition to Intervene to contact@psc.sc.gov no later than Wednesday, January 7, 2026; or • Mail a Petition to Intervene to 101 Executive Center Drive, Suite 100, Columbia, SC 29210 no later than Wednesday, January 7, 2026. Please include your email address. **You must give a copy of your Petition to Intervene to all Parties in this case. Petitions to Intervene must meet the requirements of Commission Regulation 103-825 and must be approved by the Commis- sion. Pursuant to Commission Order No. 2025-669, Initial Comments regarding the Company’s Application are due Thursday, January 22, 2026 and the Company’s Responsive Comments are due Wednesday, February 4, 2026. In the above referenced case, if the proposed tariffs contain any request for a change of rates, the proposed rates may be changed by the Commission. Persons seeking further information about these procedures should contact the Commission at 803-896-5100 or visit its website at www.psc.sc.gov.