Decision on the closeout of the RIIO-GD1 Tax clawback for WWU

Decision

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The RIIO-GD1 price control ran from April 1 2013 to Mar 31 2021. Within RIIO-GD1 there are a number of cost areas that require specific mechanisms to close out given their uncertain nature. As a result, some areas of the price control need to be settled ("closed out") once the price control has ended. We published our decision on our close-out methodologies for all but one of the areas of the RIIO-GD1 price control in April 2022.

We are now publishing our outstanding decision on the closeout of the RIIO-GD1 Tax clawback for WWU.