Written Question·Department for Energy Security and Net Zero·UIN 94445

Energy Supply

Tabled: 25 November 2025
Answered: 3 December 2025

Question

Wera Hobhouse

Liberal DemocratBath

To ask the Secretary of State for Energy Security and Net Zero, whether they have made an assessment of the adequacy of the four-month notice period given to suppliers to recover additional costs under RIIO-3.

Answer

Michael Shanks
Ofgem, as the independent regulator, sets funding and investment allowances for gas and electricity transmission, and gas distribution networks through its RIIO-3 price control process. Final Determinations for RIIO-3 will be confirmed by Ofgem in Decembe...

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