Notice of Filing and Public Hearing Duke Energy Carolinas, LLC's and Duke Energy Progress, LLC's Application for Certificates of Public Convenience and Necessity for New Natural-Gas Fueled Generation Facilities to Be Located in Person and Catawba Counties, North Carolina to Be Used in Providing Service to Customers in South Carolina Docket No. 2026-30-E Why is this Notice Important? • Duke Energy Progress, LLC ("DEP") and Duke Energy Carolinas, LLC ("DEC," and together with DEP, the "Companies") filed an Application for Certificates of Public Convenience and Necessity ("Certificate" or "Certificates") with the Public Service Commission of South Carolina ("Commission") for major utility facilities now under construction in the Companies' balancing authority areas in North Carolina that will also serve DEC's and DEP's customers in South Carolina. What are the Companies Requesting in this Case? The Companies are requesting the Commission issue an order that includes the following findings of fact and conclusions of law: (1) The Companies' plans to construct two 1,365 megawatt ("MW") natural gas-fueled combined cycle ("CC") electric generating facilities at DEP's existing Roxboro Steam Plant in Person County, North Carolina ("Person County CCs") and an 850 MW (total) simple-cycle combustion turbine ("CT") facility under construction at DEC's Marshall Steam Station in Catawba County, North Carolina ("Marshall CTs", and collectively, the "Facilities") are consistent with the Commission's prior orders and the Companies' various Integrated Resource Plan filings; (2) The Companies compared the Person County CCs and Marshall CTs to a variety of generation options and confirmed the need for these Facilities to serve South Carolina customers; (3) The Facilities will support system economy, reliability, and public convenience and necessity and are needed to reliably serve the resource needs of South Carolina customers; (4) The Application for Certificates for the Person County CCs and Marshall CTs is granted as filed; and (5) Such other relief as may be justified and supported by the Application. The case was filed according to S.C. Code Ann. § 58-33-110(10) et seq. (2015 & Supp. 2025), and a hearing has been scheduled according to S.C. Code Ann. Section 58-33-130 and S.C. Code Ann. Regs. 103-817. For information on this entire Case, visit: https://dms.psc.sc.gov/Web/Dockets/Detail/119593 A public hearing is scheduled in this case to begin on Tuesday, April 28, 2026, at 10:00 a.m. with only attorneys present and no witnesses, and reconvening on Thursday, May 21, 2026, at 10:00 a.m., to receive evidence and hear from witnesses and continuing, if necessary, on Friday, May 22, 2026, at the call of the Chairman, at the Public Service Commission, 101 Executive Center Drive, Hearing Room, Columbia, South Carolina 29210. Livestream: https://www.scetv.org/live/public-service-commission Intervention deadline: Thursday, March 19, 2026 Manner to file Letters of Protest: File Public Comments or Letters of Protest by emailing contact@psc.sc.gov or mail Public Comments or Letters of Protest to 101 Executive Center Drive, Suite 100, Columbia, SC 29210. For questions regarding this filing, contact the Office of Regulatory Staff at 1-800-922-1531, the South Carolina Department of Consumer Affairs at 1-800-922-1594, Duke Energy Carolinas, LLC and Duke Energy Progress, LLC, 803-988-7132, or for public information on this filing, contact the Public Service Commission at 1-803-896-5100. February 11, 2026 GRR