Summary
UK energy regulator Ofgem plans to introduce a new financial commitment for Battery Energy Storage Systems (BESS) in Great Britain's grid connection queue, known as the Oversubscribed Technologies Commitment Fee (OTCF), with fees starting at £3,000 per MW and rising to £25,000 per MW. The measure aims to cut an oversupply of projects and prioritize those that can demonstrate a minimum level of financial commitment. The proposed fee structure is expected to come into force in July 2027 as part of a modification to Great Britain's connection and use of system code (CUSC).