Ofgem has launched a call for input regarding its role in implementing a cap and floor regime for Long Duration Electricity Storage (LDES), as directed by the Department for Energy Security and Net Zero (DESNZ). Stakeholders are invited to provide feedback to aid in the development of the regime, which aims to promote investment in LDES projects. Ofgem has outlined its initial thoughts on the cap and floor model, allocation approach, and timescales, and is seeking views on key aspects, including project eligibility criteria, assessment methodology, and the approach to setting caps and floor levels. The call for input closes on 8 January 2025. Ofgem, in collaboration with DESNZ, plans to publish technical details of the regime in winter 2024/25, with a decision on approved projects expected by Q2 2026.