2026-SC-INT 00004
Published On: 07/08/2026

Question: For 2026 SC Battery RFP, can the study deposit be posted as a Letter of Credit or it needs to be posted as cash?

Answer: The Study Deposit must be posted as cash.

2026-SC-INT 00003 (revised 07/07/2026)
Published On: 07/07/2026

Question: We would like to oversize our interconnection request at time of interconnection application over and above the max allowable 100 MW indicated by the RFP. Are we able to do that via the RSC, or do you require a separate interconnection application for the second phase?

Answer: RSC interconnection request amounts must relate to only eligible projects sizes in the 2026 SC Battery RFP document section B(a) for UOT proposals and section B(b) for ESSA proposals and not oversized.

2026-SC-INT 00002
Published On: 06/25/2026

Question: What date will the 2026 Resource Solicitation Cluster (RSC) open?

Answer: The 2026 Resource Solicitation Cluster (RSC) used for the 2026 SC Battery RFP will open July 15, 2026. This date will be updated in 2026 SC Battery RFP Document 11 and posted on or around July 7 with final documents to the RFP website.

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.