2026-SC-INT 00001
Published On: 06/05/2026

Question: As we finalize our site selection and preliminary engineering, we have a question regarding transmission interconnection parameters. Could you please clarify where there are any interconnection restrictions by line voltages? If so, do they apply equally for DEC and DEP?

Answer: Projects must be directly interconnected to the Duke Energy Carolinas (DEC) or Duke Energy Progress (DEP) transmission system. For Utility Ownership Track (UOT) proposals, Preferred Battery Facility GSU Sizing is provided in Document 10, available at https://www.dukeenergyrfpcarolinas.com/2026-SC-Battery-Documents.