Great Britain Fuel Mix Disclosure 2026: Renewable Energy Guarantees of Origin (REGOs)
Summary
Ofgem has issued procedural guidance to electricity suppliers and generators with Renewable and Electricity Register accounts on how to hold REGOs for GB Fuel Mix Disclosure 2026. The letters set out the administrative process for the 2026 FMD cycle; they do not change the underlying REGO scheme rules, eligibility, or trading mechanics.
Why it matters
Routine annual operational guidance for an existing scheme. The deeper REGO question, that certificates are decoupled from physical delivery and let suppliers badge unbundled imports as 'renewable' without locational or temporal matching, is untouched here.
Key facts
- •Applies to GB Fuel Mix Disclosure 2026 cycle
- •Two letters issued: one for generators, one for suppliers
- •Addressed to holders of Renewable and Electricity Register (RER) accounts
- •Published 18 May 2026 as guidance, not consultation or decision
- •Scheme: REGO (Renewable Energy Guarantees of Origin)
Timeline
Areas affected
Memo
Great Britain Fuel Mix Disclosure 2026: Renewable Energy Guarantees of Origin (REGOs) | Ofgem Please enable JavaScript in your web browser to get the best experience. BETA This site is currently in BETA. Help us improve by giving us your feedback . Close alert: Great Britain Fuel Mix Disclosure 2026: Renewable Energy Guarantees of Origin (REGOs) Publication type: Guidance Publication date: 18 May 2026 Topic: Electricity supply, Electricity generation Scheme name: REGO Print this page Share the page Share on Facebook Share on Twitter Share on LinkedIn Guidance for electricity suppliers and generators, explaining the process for holding Renewable Energy Guarantees of Origin for GB FMD 2026. This letter to all electricity suppliers and generators holding an account on the Renewable and Electricity Register (RER) explains the process for holding Renewable Energy Guarantees of Origin (REGOs) for GB Fuel Mix Disclosure 2026. Documents GB FMD REGO Letter for Generators [PDF, 229.48KB] GB FMD REGO Letter for Suppliers [PDF, 136.49KB] Print this page Share the page Share on Facebook Share on Twitter Share on LinkedIn Close