Millions of consumers choose renewable tariffs, generating more than £1bn in renewable certificate (REGO) spending since 2020. But current regulations don’t direct that money towards the clean power Britain needs during expensive peak hours. The UK’s regulation treats all renewable certificates equally—whether they represent power generated during cheap, sunny afternoons or scarce, high-demand evenings.

The Matched Clean Power Index, launching October 27 at www.matched.energy, ranks suppliers by how well they align renewable generation with customer demand. The index uses public data from Elexon, Ofgem, and NESO to track the power served to customers on a half-hourly basis for 213 TWh of consumption — roughly 75% of the UK market.

More than 30 experts across the sector have contributed to the methodology, including researchers at Imperial College and several energy suppliers.