The Green Gas Support Scheme Regulations 2021

Jurisdiction: GB

Commencement: 30th November 2021

Amends: New Legislation

Mini Summary

These Regulations introduce the Green Gas Support Scheme and Green Gas Levy. They are relevant to licenced gas suppliers who are required to pay a quarterly levy to fund the scheme and scheme participants who are provided with a tariff guarantee for biomethane injected into the grid.


The Green Gas Support Scheme (GGSS) is introduced from 30th November 2021, to facilitate and encourage the production of biomethane for injection into the grid by anaerobic digestion*. Under the GGSS those that produce, or are proposing to produce, biomethane for injection by anaerobic digestion can apply for a tariff guarantee for the production of the biomethane.

*Anaerobic digestion is the bacterial fermentation of biomass in the absence of oxygen.

The scheme will run for 4 years until 30th November 2025 and any biomethane injected into the grid after this date is not eligible for the tariff guarantee.

The GGSS is funded by the Green Gas Levy (GGL). All licenced fossil fuel gas suppliers in Great Britain are required to pay a quarterly levy which is based on the number of meter points they serve. Further information on the GGL duties can be found below.

Ofgem is the Authority responsible for administering the GGSS and the associated GGL.


Various duties for businesses.



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