Ofgem Shortlists 16 LDES Projects Under Cap and Floor Scheme

⚡ AI Executive Summary

UK energy regulator Ofgem has identified a shortlist of long-duration electricity storage projects eligible for support through its cap and floor mechanism, a policy framework designed to reduce investment risk for technologies that store energy over extended periods. The provisional selection represents a significant step in commercializing storage assets that can discharge power across multiple days or seasons, addressing a critical gap in grid flexibility as renewable penetration increases. This development signals growing policy confidence in long-duration storage economics and deployment timelines. For grid operators, LDES projects offer demand flexibility and seasonal balancing capabilities that batteries alone cannot provide; the cap-floor framework aims to unlock financing for technologies still climbing cost curves. Success of these projects will influence how networks manage renewable intermittency and could reshape the role of hydrogen and thermal storage in future system architecture.