Green Gas Support Scheme guidance

Guidance

Publication date

Scheme name

GGSS

The Green Gas Support Scheme (GGSS) is designed to support the deployment of new anaerobic digestion (AD) biomethane plants to increase the proportion of green gas in the gas grid. Support will be provided to registered biomethane producers based on the volume of eligible biomethane, produced from AD, that they inject into the gas grid. The Regulations currently allow applications to be made until 30 November 2025. Regulation amendments have been laid, which when in effect will change this date to 31 March 2028. 

This guidance outlines Ofgem’s administration of the GGSS. This guidance is for biomethane producers wishing to apply to the scheme, tariff guarantee holders, and scheme participants but associated industries and organisations, consumer groups and the public sector may also be interested in this document.

Ofgem's administration of the associated Green Gas Levy (GGL) is outlined in a separate document, which is available here: Green Gas Levy Guidance.

Updates

There are currently two versions of the guidance published here:

  • version 1.2 of the Green Gas Support Scheme guidance which is applicable until the regulation amendments come into force on 4 June 2024
  • version 2.0 of the draft Green Gas Support Scheme guidance for comment which will be relevant from 4 June 2024

Draft Green Gas Support Scheme guidance (version 2.0)

An updated version of the Green Gas Support Scheme guidance has been published in draft format. This will supersede version 1.2 when the regulation amendments laid on 14 May 2024 come into force on 4 June 2024.

The draft Green Gas Support Scheme guidance (version 2.0) aligns with the Green Gas Support Scheme Regulations 2021, as amended by the Green Gas Support Scheme (Amendment) Regulations 2022 and 2024 regulation amendments will come into force on 4 June 2024. It also includes new information on how to apply for additional capacity. All changes have been summarised in a separate subsidiary document.

Recent regulation amendments

The amendments to the regulations will:

  • extend the period the scheme is open to applications to 31 March 2028
  • enable the registration of heat pumps so that heat supplied to the anaerobic digesters and biomethane production process from a registered eligible heat pump is exempt from heat deduction in the calculation of payments

Send us your feedback

Let us know if you have suggestions for changes or improvements on our draft for comment guidance (version 2.0), particularly around the clarity of the updates. When the regulation amendments come into effect, an updated version of the guidance will be published by us. Your feedback will inform our work around this.

This is not a consultation on our administrative approach to the policy, or on the policy itself.

Read the proposed guidance and let us know if: 

  • the overall tone of the draft guidance is easy to read and understand
  • there are any sections that could be explained more clearly
  • the draft guidance is clear and simple to use
  • any sections are ambiguous

All responses should be sent to future.heatpolicy@ofgem.gov.uk by 31 May 2024. Please refer to the related paragraph number in your feedback.