Green Gas Support Scheme Annual Report: Scheme Year 5 April 2025 to March 2026
As part of our statutory responsibilities administering the GGSS and associated GGL, we have produced this report to provide an update on scheme activity during Scheme Year 5, covering 1 April 2025 to 31 March 2026.
The Green Gas Support Scheme (GGSS) opened to applicants in England, Scotland and Wales on 30 November 2021 and provides financial support to registered biomethane producers based on the volume of eligible biomethane (produced from Anaerobic Digestion) that they inject into the gas grid. In addition to decarbonisation, the GGSS helps promote a circular economy by making use of our domestic and industrial organic wastes to heat homes and businesses in Great Britain.
The GGSS is funded by a levy placed on all licensed fossil fuel gas suppliers in Great Britain, known as the Green Gas Levy (GGL).
Applications for registration
We received 68 applications for tariff guarantees (including reapplications) from scheme launch to 31 March 2026. Of these, 23 were issued with a tariff guarantee and 13 have gone on to successfully complete the registration process.
Registered scheme participants
Since the start of the scheme to the end of March 2026, support payments of almost £40.0 million have been made to the 13 registered participants. £13.6 million of this was paid during SY5.
In the scheme’s lifetime, 649.0 GWh of eligible green gas has been injected into the grid. This is sufficient to heat 56,435 typical UK homes for a year or 237.7 million hot baths.
The Green Gas Levy
A total of £59.38 million of levy payments, used to fund payments to GGSS participants, were collected from fossil fuel gas suppliers during SY5.
In SY5, 3 suppliers missed a levy payment deadline. Two of these payments were subsequently made shortly after the deadline, and in one case there was a draw down from credit cover. This meant that there was no shortfall in collection of the levy fund during SY5.