Green Gas Certification Scheme Governance

The GGCS is run by the Renewable Energy Association’s subsidiary company, Renewable Energy Assurance Ltd. Details of these and other, related bodies are set out below.

Renewable Energy Assurance Ltd

Renewable Energy Assurance Ltd. is a wholly-owned subsidiary of the Renewable Energy Association (REA). It is a not-for-profit company that also administers the REAL Assurance Scheme (for more information see and the Biofertiliser Certification Scheme (BCS) (see below for more information).

Renewable Energy Association

The Renewable Energy Association (REA) was established in 2001 to represent British renewable energy producers and promote the use of sustainable energy in the UK. The REA’s membership is active across the whole spectrum of renewables: electric power, heat and biofuels. The REA represents a wide variety of organisations, including generators, project developers, fuel and power suppliers, equipment producers and service providers. The REA has over 650 members who range in size from major multi-nationals to sole traders, making it by far the largest renewable energy industry association in the UK. (

REA Biogas

REA Biogas is the trade association for the biogas industry in the UK. Since 2004 REA has been the unifying force championing the biogas industry, playing a major role in delivering the expansion that we are now seeing. (For more information see

Biofertiliser Certification Scheme

Under the BCS anaerobic digestion plants choose to be certified to the PAS 110 and Quality Protocol. This means the digestate produced at the plant as a result of the process can be classified as a product rather than a waste and used as a carbon-free fertiliser on crops. It is likely that green gas producers who decide to participate in the GGCS will also have applied to the BCS for certification. However, this is not a pre-condition. Plants that continue to use the environmental permitting route are welcome to participate in the GGCS. (For more information see

Other EU Certification Schemes

The GGCS is also linked to a number of gas certification schemes operating in other EU Member States.

Founder Partners and Associate Members:
British Gas
Thames Water
Milton Keynes Council
National Grid
CNG Services Ltd