Renewable Energy Guarantees of Origin (REGO)

About the Scheme

The Renewable Energy Guarantees of Origin (REGO) scheme provides transparency to consumers about the proportion of electricity that suppliers source from renewable electricity. 

This scheme provides certificates called REGOs which demonstrate electricity has been generated from renewable sources. 

How does REGO work? 

One REGO certificate is issued per megawatt hour (MWh) of eligible renewable output to generators of renewable electricity. 

The primary use of REGOs in Great Britain and Northern Ireland is for Fuel Mix Disclosure (FMD). FMD requires licensed electricity suppliers to disclose to potential and existing customers the mix of fuels (coal, gas, nuclear, renewable and other) used to generate the electricity supplied. 

Guarantees of Origin 

EU Member States version of the REGO scheme is called Guarantees of Origin (GoOs). As of 1 January 2021, the EU no longer recognises UK REGOs. 

From the disclosure period beginning 1 April 2023 and onwards, GoOs are no longer recognised for use in GB FMD, FIT annual levelisation, or CfD.

Who can apply for the REGO scheme? 

Generating stations in Great Britain and Northern Ireland that produce electricity from eligible renewable energy sources can apply for and receive Renewable Energy Guarantees of Origin certificates (REGOs). 

Applications for accreditation under the scheme are made via the Renewables and CHP register. More details on this can be found on the Apply and log into the register web page. 

Our role in the REGO scheme 

Ofgem is the administrator of the REGO scheme for generation in Great Britain on behalf of the Department for Energy Security and Net Zero, and in Northern Ireland on behalf of the Northern Irish Utility Regulator (UR). 

We regularly report to HMRC and the Department for Energy Security and Net Zero and are responsible for the annual Fuel Mix Disclosure compliance deadline. 

 

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