ValueCompensation of 90% of eligible electricity network charges (TNUoS, DUoS, BSUoS) for certified EIIs from claim month April 2026 (raised from 60%); paid as quarterly electricity support payments via Elexon
DeadlinesRolling quarterly claim windows — claims due within about a month of each quarter end (window extended to two months from April 2026 per government response)
RequirementsValid EII certificate from Department for Business and Trade for the claim month; register on Elexon NCC portal; quarterly claims with invoices or projected network costs as evidence
CaveatsGreat Britain only; funded by the EII Support Levy on suppliers (levy rises from 4/1/2027 to fund the 90% rate); compensation claimable on network charges incurred from 4/1/2024; claim-window discipline matters — late quarterly claims can be lost
Last verified2026-08-24