Country: RGGOs are specific to the UK gas grid and should be used only to reflect biomethane consumption within the UK. For multinational companies, it’s important not to apply RGGOs to operations outside the UK, as these certificates are not transferable across markets.

Price: RGGO prices are generally higher than electricity-based EACs like REGOs. This is due to limited biomethane supply, higher production costs, and growing demand from organisations looking to reduce their gas-related emissions or enhance voluntary ESG disclosures.

Vintage: The vintage refers to when the biomethane was produced and injected into the gas grid. Organisations should ensure the vintage of their RGGOs aligns with the reporting year of their gas consumption to maintain consistency and credibility in disclosures.

Feedstock: RGGOs can be linked to a variety of feedstocks, including food waste, agricultural waste, and energy crops. Some buyers may prefer specific feedstocks based on sustainability narratives, circular economy goals, or reputational alignment.

By taking these factors into consideration, organisations can ensure their RGGO procurement is both credible and aligned with broader sustainability objectives.

RGGOs are managed via the GGCS registry. Each unit contains detailed data on production date, feedstock, and injection location. Once claimed, they are retired to prevent double-counting — ensuring traceability and credibility in your emissions reporting.