The Allocation Round 4 (AR4) application window closed on 14 January 2022. National Grid ESO is now reviewing applications against the relevant qualification criteria.


This stage of the AR4 process is the ‘qualification assessment window’, which will conclude on 25 February 2022. National Grid ESO will then inform applicants whether they are eligible to participate in the round.

Any non-qualifying applicants will be able to request that National Grid ESO reviews its decision on their application. If required, the review window will open on 28 February 2022 for five working days.

Further updates on AR4 will be published on this website as the round progresses. For further information on the various stages of the round, see the timelines page.