Guarantees of Origin (GoOs)

All EU member states must have a Guarantees of Origins (GoOs) scheme. In the UK, our version is called Renewable Energy Guarantees of Origin (REGO). Ofgem E-Serve is required by legislation to recognise overseas GoOs if they are presented to us for the purposes of Fuel Mix Disclosure (FMD) and Feed-in Tariffs (FIT) Levelisation.

Use in Fuel Mix Disclosure and Feed-in Tariffs levelisation

GoOs label electricity from renewable sources to provide information to electricity customers on the source of their energy. They are used by suppliers for FMD compliance along with GB-issued REGOs to show how much renewable electricity they have supplied in the previous year.

GoOs are also used by suppliers to exempt themselves from some of their FIT costs via the FIT levelisation process.

How to get GoOs recognised by Ofgem E-Serve

As Ofgem E-Serve’s Renewables and CHP register is not compatible with overseas GoOs, they must be cancelled in another country’s register before being presented to us. In order to get them recognised, suppliers must read the documents provided and follow the specified processes. Suppliers must submit an audit report alongside their presented GoOs. The audit report must be written in the standard of ISAE 3000.

Publications and updates

  • Published: 4th Oct 2016
  • Guidance
  • 2 Associated documents
See how suppliers should provide information to Ofgem when presenting Guarantees of Origin for use in Great Britain Fuel Mix Disclosure and Feed-in Tariff (FIT) annual levelisation.

  • Published: 2nd Jun 2016
  • Guidance
  • 1 Associated documents
This is a further clarification on our Proof of UK consumption of overseas electricity consultation decision. In this document we have clarified answers to FAQs we've received since publishing the initial decision and clarification.

  • Published: 29th Apr 2016
  • Factsheets
  • 1 Associated documents
This is a clarification on our Proof of UK consumption of overseas electricity consultation decision. In this document we have clarified the answers to the FAQs we have received since we published the decision originally.

  • Published: 19th Apr 2016
  • Decisions
  • 2 Associated documents
This document details our decision on proof of UK consumption of overseas electricity, following our consultation

  • Published: 1st Mar 2016
  • Decisions
  • 1 Associated documents
See our summary of the responses received and actions we have taken or will take.

  • Published: 1st Mar 2016
  • Guidance
  • 2 Associated documents
See how suppliers should provide information to Ofgem when presenting Guarantees of Origin for use in Great Britain Fuel Mix Disclosure and Feed-in Tariffs (FIT) annual levelisation.

  • Published: 22nd Apr 2015
  • Charts and data
  • 1 Associated documents
This template is to be used by organisations seeking recognition of EU GoOs for use in GB Fuel Mix Disclosure (FMD).

  • Published: 15th Apr 2015
  • Guidance
  • 2 Associated documents
This document explains how organisations should present the information to Ofgem if they are seeking recognition of EU Guarantees of Origin (GoOs) for use in GB Fuel Mix Disclosure (FMD).

  • Published: 15th Jan 2015
  • Factsheets
  • 1 Associated documents
This document answers some of the most frequently asked questions around the Climate Change Levy (CCL) Exemption for Renewables and the Renewable Energy Guarantees of Origin (REGO) schemes.

  • 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.

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