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Great Britain Fuel Mix Disclosure 2025: Renewable Energy Guarantees of Origin (REGOs)
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Letter to all electricity suppliers and generators holding an account on the Renewables and CHP Register, explaining the process for holding Renewable Energy Guarantees of Origin (REGOs) for Great Britain Fuel Mix Disclosure 2025.
Main document
[GB Fuel Mix Disclosure 2025: letter for generators [PDF, 112.75KB]
](https://www.ofgem.gov.uk/sites/default/files/2025-04/GB-FMD-REGO-letter-for-generators-2025.pdf)
[GB Fuel Mix Disclosure 2025: letter for suppliers [PDF, 121.28KB]
](https://www.ofgem.gov.uk/sites/default/files/2025-04/GB-FMD-REGO-letter-for-suppliers-2025.pdf)