2026-SC-GEN 00003 Published On: 06/09/2026
Question: This question pertains to the 2026 SC Battery RFP. Can a sponsor submit two proposals at the same substation, with one project/POI request under the UOT track, and the second project/POI under the ESSA track?
Answer: The same facility may be offered under both RFP tracks (UOT and ESSA) as long each bid complies with the requirements for the respective track and is the same POI and not a different POI.
2026-SC-GEN 00002 Published On: 05/11/2026
Question: For the 2026 SC Battery RFP are you accepting projects that are located in North Carolina?
Answer: SC Battery RFP projects must be located in South Carolina, please see the DEC DEP 2026 SC Battery Draft RFP Document, Section III (Facility Eligibility Requirements and Proposal Tracks) for details.
2026-SC-GEN 00001 Published On: 05/11/2026
Question: For DEP’s 100 MW BESS procurement (assumed ~50 MW ESSA and ~50 MW UOT), how is the 50% sponsor cap applied? Specifically, is the cap calculated at the total DEP award level (i.e., 50 MW across both ESSA and UOT), or separately within each track (i.e., up to 25 MW in ESSA and 25 MW in UOT)?
Answer: The 2026 SC Battery RFP intends for the 50% market breadth requirement to apply across the procurement total and not per track or per balancing authority area.
2026-SC-DOC 00001 Published On: 06/18/2026
Question: In the revised Draft RFP document UOT requirements in Section III.B(a) there was from "...Onsite acoustic survey" to "...onsite acoustic survey schedule". Can you please confirm that the intention is for bidders to have scheduled an onsite acoustic survey but that this does not need to be complete prior to bid submittal?
Answer: This is consistent with the response to 2025-DOC 00012 in the 2025 RFP, which confirms that the applicable bat studies do not need to be performed prior to bid submittal, but are required as part of selling a fully developed project as part of an Asset Transfer proposal. Response to 2025-DOC 00012 is provided for convenience:
For Asset Transfer proposals, as part of selling a fully developed project, the MP must complete a habitat assessment and onsite acoustic survey for all listed and proposed to be listed bat species, as well as any bat species listed or proposed to be listed after the issuance of the RFP. This is included as a condition to close, as part of selling a fully developed project to the Utility. The MP should provide a copy of the both the assessment and survey plan, prior to submittal to applicable agencies. If the MP has completed said surveys, they should include them in their bid submittal, if assessment/surveys have not been completed, Duke will review them as they are provided either in context of the RFP evaluations or within the governing Asset Purchase Agreement.
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.