Renewables Obligation (RO)

The Renewables Obligation (RO) is the main support mechanism for renewable electricity projects in the UK. Smaller scale generation is mainly supported through the Feed-In Tariff scheme (FITs).

The RO came into effect in 2002 in England and Wales, and Scotland, followed by Northern Ireland in 2005. It places an obligation on UK electricity suppliers to source an increasing proportion of the electricity they supply from renewable sources.

For information on how the obligation level is set each year please see the Department of Energy and Climate Change website.

Renewables Obligation Certificates (ROCs) are green certificates issued to operators of accredited renewable generating stations for the eligible renewable electricity they generate. Operators can trade ROCs with other parties. ROCs are ultimately used by suppliers to demonstrate that they have met their obligation.

Where suppliers do not present a sufficient number of ROCs to meet their obligation, they must pay an equivalent amount into a buy-out fund. The administration cost of the scheme is recovered from the fund and the rest is distributed back to suppliers in proportion to the number of ROCs they produced in respect of their individual obligation.

If you have any questions relating to the Renewables Obligation that you are not able to find the answer for in the relevant sections of our website or guidance documents, please call our Renewables team on 020 7901 7310 or email: renewable@ofgem.gov.uk

Publications and updates

  • Published: 22nd Apr 2015
  • Guidance
  • 1 Associated documents
This guide will help you to submit an application for accreditation under the Northern Ireland Renewables Obligation (NIRO) scheme for your MCS (Microgeneration Certification Scheme) certified solar photovoltaic (PV) or wind installation.

  • Published: 13th Apr 2015
  • Factsheets
  • 0 Associated documents
This page is for operators of solar photovoltaic (PV) generating stations in England, Wales and Scotland affected by the closure of the RO scheme to large-scale solar PV on 1 April 2015.

  • Published: 13th Apr 2015
  • Guidance
  • 1 Associated documents
This document provides an overview of the generating technologies that might be eligible under the Renewables Obligation (RO) scheme.

  • Published: 13th Apr 2015
  • Guidance
  • 1 Associated documents
This guide can help establish the date that your generating station was or will be commissioned in line with the definition provided in RO legislation.

  • Published: 31st Mar 2015
  • Guidance
  • 1 Associated documents
This document lists the deadlines for data submission for the purpose of issuing Renewables Obligation Certificates (ROCs) and Renewable Levy Exemption Certificates (LECs) and the dates by which Ofgem intends to issue ROCs and Renewable LECs for the...

  • Published: 16th Feb 2015
  • Reports & plans
  • 1 Associated documents
The Renewables Obligation annual report provides an overview of scheme activated between 1 April 2013 and 31 March 2014.

  • Published: 12th Feb 2015
  • News
  • 0 Associated documents
To inform our stakeholders and suppliers about the value of the Renewables Obligation (RO) buy-out price and mutualisation ceiling applicable for the 2015-16 RO year.

  • Published: 28th Jan 2015
  • Closed: 25th Mar 2015
  • Consultations & responses
  • 2 Associated documents
This is our consultation and response which details how we will administer the closure of the RO to large-scale solar PV and the associated grace periods.

  • Published: 19th Nov 2014
  • Data and statistics, News
  • 0 Associated documents
We have just redistributed the 2013-14 RO late payment fund, paying a total of £6,171,656 to suppliers who presented Renewables Obligation Certificates (ROCs) this year.

  • Published: 17th Oct 2014
  • Data and statistics, Open letters & correspondence
  • 0 Associated documents
This week we have redistributed the Renewables Obligation (RO) buy-out fund for 2013/14.

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