2026 South Carolina Battery RFP

Duke Energy is conducting a Request for Proposal for battery energy storage systems (BESS) in South Carolina. This RFP solicits proposals for utility-owned or third-party owned battery storage projects that can contribute to Duke Energy's resource needs and operational flexibility requirements. The RFP is part of Duke Energy's integrated resource planning process and covers the acquisition of battery storage assets or services.

Key Scope Elements: Proposals must comply with Duke Energy's technical standards for energy storage systems, including specified requirements for battery technology, inverters, monitoring systems, and safety equipment. The RFP documents include technical guidance for asset transfer procedures, survey requirements (including LiDAR standards and ALTA/topo surveys), geotechnical investigations, and interconnection requirements. Respondents must meet Duke Energy's approved vendor list requirements and provide detailed financial information including letters of credit, surety bonds, and balance sheet documentation.

Major Deliverables and Contractual Requirements: Successful respondents will be required to execute an Asset Purchase Agreement (APA) with multiple exhibits including assignment and assumption agreements, bill of sale, LGIA assignments, lessor estoppel certificates, and real property assignment documents. Respondents must also be prepared to enter into an Energy Storage Services Agreement (ESSA) with Duke Energy. The RFP includes specific requirements for project site documentation, survey mapping, and technical specifications.

Important Dates and Process Milestones: The RFP documents were released for stakeholder review in April 2026. This draft RFP is open for stakeholder comments and questions through the portal. Duke Energy has established a 2026 Resource Solicitation Cluster (RSC) Process that governs the timeline for proposal submission, evaluation, and selection. Stakeholder meetings and Q&A sessions are conducted throughout the process to address inquiries and clarifications.