Final Determination decisions for the network price controls between 1 April 2026 and 31 March 2031 (RIIO-3).
RIIO (Revenues = Incentives + Innovation + Outputs) is Ofgem’s framework to ensure that the monopoly companies operating our gas and electricity networks have sufficient revenue to invest in and run their networks, and deliver what customers value.
The current electricity and gas transmission and gas distribution price controls (known as RIIO-2) end on 31 March 2026. The next price control (RIIO-3) will run for five years, from 1 April 2026 to 31 March 2031. Following our review of the responses to the RIIO-3 Draft Determinations consultation, Ofgem has now published the Final Determinations for RIIO-3.
RIIO-3 Final Determination – documents
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