Green Gas Support Scheme: annual report April 2024 to March 2025

The Green Gas Support Scheme (GGSS) opened to applicants in England, Scotland and Wales on 30 November 2021 and provides financial support to eligible new anaerobic digestion biomethane plants for the injection of lower carbon 'green gas' into the gas grid. In addition to decarbonisation, the GGSS also helps promote a circular economy by making use of our domestic and industrial organic wastes to heat British homes and businesses.  

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). 

As part of our statutory responsibilities administering the GGSS and associated GGL we have produced this report to provide an update on scheme activity between 1 April 2024 and 31 March 2025 (Scheme Year 4).  

Applications for registration 

• Since the start of the scheme to the end of March 2025, we have received 55 initial applications for registration. Of these, 20 have been issued with a tariff guarantee and 7 have gone on to successfully complete the registration process. 

Registered scheme participants 

• Since the start of the scheme to the end of March 2025, support payments of £20.1 million have been made to the registered participants. This is based on 321.7 GWh of eligible green gas injected into the grid. 
• This quantity of green gas is sufficient to heat 27,977 typical UK homes for a year or 117.9 million hot baths. 

The Green Gas Levy 

• A total of £9.98 million of levy payments were collected from fossil fuel gas suppliers during Scheme Year 4. 
• There were 30 incidents of statutory non-compliance recorded against suppliers in Scheme Year 4. Four of the statutory incidents involved suppliers missing a levy payment deadline. Three 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 Scheme Year 4.