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: 3rd Apr 2014
  • Guidance
  • 1 Associated documents
This draft document is available for public comment until 1 May 2014. It has been updated to include greater clarity and additional guidance for reporting supply volumes under the Renewables Obligation (RO).

  • Published: 1st Apr 2014
  • Guidance
  • 1 Associated documents
This document provides an overview of the generating technologies that might be eligible under the Renewables Obligation (RO) scheme, explains how generators become accredited and sets out the information we require from generators in order to issue ROCs.

  • Published: 1st Apr 2014
  • News, updates and statements
  • 1 Associated documents
This document provides an overview of the changes made to the FMS, Sustainability Criteria, Sustainability Audit and Generator guidance documents, as part of the Renewables Obligation (Amendment) Order 2014 for England and Wales.

  • Published: 1st Apr 2014
  • News, updates and statements
  • 0 Associated documents
Operators of generating stations in Northern Ireland should continue to refer to the documents published before 1 April 2014 on the ‘Fuelled Stations and FMS’ and ‘Biomass Sustainability’ webpages.

  • Published: 10th Mar 2014
  • Other
  • 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: 28th Feb 2014
  • Reports & plans
  • 2 Associated documents
The Renewables Obligation Annual Report gives an overview of scheme activity during the period 1 April 2012 to 31 March 2013.

  • Published: 12th Feb 2014
  • News, updates and statements
  • 1 Associated documents
This document records the buy-out price and mutualisation ceilings for the Renewables Obligation for the 2014-15 obligation period. The buy-out price and the mutualisation ceiling are updated annually to reflect changes in the Retail Prices Index.

  • Published: 20th Jan 2014
  • Guidance
  • 1 Associated documents
This draft document is available for public comment until 28 February 2014. It has been updated to incorporate the biomass sustainability amendments outlined in the illustrative draft of the Renewables Obligation (Amendment) Order 2014.

  • Published: 20th Jan 2014
  • Guidance
  • 1 Associated documents
This draft document is available for public comment until 28 February 2014. It has been updated to incorporate the biomass sustainability amendments outlined in the illustrative draft of the Renewables Obligation (Amendment) Order 2014.

  • Published: 20th Jan 2014
  • Guidance
  • 1 Associated documents
This draft document is available for public comment until 28 February 2014. It has been updated to incorporate the biomass sustainability amendments outlined in the illustrative draft of the Renewables Obligation (Amendment) Order 2014.

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