Renewable Energy Guarantees of Origin (REGO)

All EU member states are required to establish and maintain a Renewable Energy Guarantees of Origin (REGO) scheme. The purpose of the scheme is to promote and increase the contribution of renewable energy sources to electricity production across the EU, providing a common platform to facilitate the trade of renewable electricity between member states.

In addition, the scheme sets out increased transparency to consumers, allowing them choice to purchase renewable or non-renewable electricity.

We administer the scheme for generation in Great Britain on behalf of the Department of Energy and Climate Change (DECC), and in Northern Ireland on behalf of the Northern Ireland Authority for Utility Regulation. The scheme came into effect in October 2003 in Great Britain and November 2003 in Northern Ireland. The regulations governing the schemes were amended in 2010.

REGO is also the name of the certificate we issue to certify that the electricity was produced from eligible renewable energy sources. We issue REGOs to accredited generating stations located in Great Britain and Northern Ireland.

One REGO is issued for each megawatt hour (MWh) of eligible renewable output generated (with effect from 5 December 2010). Prior to 5 December 2010 one REGO was issued for each kilowatt hour (kWh) of eligible renewable output generated. 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 their customers, and potential customers, the mix of fuels (coal, gas, nuclear, renewable and other) used to generate the electricity supplied annually.

If you have any questions relating to the REGO scheme that you are not able to find the answer for in the relevant sections of our website or guidance documents, please contact our Renewables and Combined Heat and Power team on 020 7901 7310 or renewable@ofgem.gov.uk

Publications and updates

  • Published: 10th Jun 2011
  • Guidance
  • 1 Associated documents
This document provides background to the Renewable Energy Guarantees of Origin (REGO) scheme and explains the processes the operator of a generating station, or their agent, must go through to receive REGOs.

  • Published: 1st Jun 2010
  • Open letters & correspondence
  • 1 Associated documents
Letter sent to all generators and suppliers explaining the process for submitting claims for REGOs (Renewable Energy Guarantees of Origin) in the Fuel Mix Disclosure process for 2010.

  • Published: 22nd Mar 2010
  • Other
  • 1 Associated documents
This document includes details of Renewable Energy Guarantees of Origins (REGOs) that are held by Suppliers for the 2009 Fuel Mix Disclosure Compliance.

  • Published: 20th May 2009
  • Other
  • 1 Associated documents
Letter sent to all generators and suppliers explaining the process for submitting claims for REGOs (Renewable Energy Guarantees of Origin) 2009

  • Published: 29th Jan 2009
  • Other
  • 1 Associated documents
Letter from NI Authority regarding the administration of NI REGOs being carried out by Ofgem.

  • Published: 16th Dec 2005
  • Decisions
  • 1 Associated documents
The purpose of the guidelines is to help suppliers with the presentation of the fuel mix information to help customers understand the information.