News from GGCS

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GGCS Guidance Documents

Posted: 26 May, 2026. Written by Jesse Scharf

The GGCS publishes a range of guidance documents for its members on both operational and policy issues. Numbering of document reflects the sequence of which version 1.0 of the document was originally published and some documents have since been been withdrawn or merged into other documents.  

Documents 1, 2, and 7 related to the operation of Producer and Trader accounts can be downloaded from the “Further Information” section below. 

• GGCS Guidance Document 1 - Producer Account User Guide - Those operating Producer accounts should always have read this document
• GGCS Guidance Document 2 - Trader Account User Guide - Those operating Trader accounts should always have read this document
• GGCS Guidance Document 7 - RGGO transfers to and from the Green Gas Certification Scheme

The following documents can be accessed here. Where documents were published several years ago, then there may be more recent developments and you should contact the Scheme (info@greengas.org.uk) with further questions.  

• GGCS Guidance Document 4a - Allocation of carbon savings at different levels v1.1
• GGCS Guidance Document 9 - Recognition of RGGOs within the EU ETS and UK ETS v1.3
• GGCS Guidance Document 11 - Impact of Brexit on the GGCS v1.2
• GGCS Guidance Document 12 - Environmental Reporting Guidelines in the UK v1.1
• GGCS Guidance Document 15 - GGCS Green Gas Certificates and the GHG Protocol v1.5
• GGCS Guidance Document 21 - Environmental Benefits and Impacts of Biomethane v1.2
• GGCS Guidance Document 23 - Union Database for Biofuels v1.0

A model agreement for buying and selling RGGOs is available here.

Further Information:

• GGCS Guidance Document 1 Producer Account User Guide v2 (2.48 MB)
• GGCS Guidance Document 2 Trader Account User Guide v20 (1.56 MB)
• GGCS Guidance Document 7 RGGO transfers to and from the Green Gas Certification Scheme v25 (0.87 MB)