Green Gas Support Scheme guidance

This guidance covers: 

• eligibility and how to apply to the scheme 
• how tariff rates are determined 
• participant obligations once registered,  
• and how to submit periodic data and receive payments.  
• It also sets out the scheme’s audit regime and compliance processes, along with other aspects of Ofgem’s administration. 

Ofgem's administration of the associated Green Gas Levy (GGL) is outlined in the Green Gas Levy Guidance. 

Choosing the right guidance for your application  

Current guidance 

Version 2.2 of the Green Gas Support Scheme Guidance is the current guidance. 

Upcoming amendments to the scheme 

Draft Version 3.0 contains proposed changes to the scheme including: 

• details of the extension to the scheme commissioning window, enabling a stage 3 application to be made until March 2030.  
• changing when sustainability audits are required, moving from registration anniversary dates to scheme years. 

These changes will take effect once the relevant regulatory amendments become law on 16 October 2026. We will update the guidance when the changes come into force. 

See the subsidiary document, 'Updates to GGSS guidance v3.0', for a summary of proposed changes made.