Platts to launch certified UK subsidized waste biomethane GO price assessments Sep 1

Platts, part of S&P Global Commodity Insights, will launch daily price assessments for certified UK subsidized waste feedstock biomethane guarantees of origin (GO), also known as Renewable Gas Guarantees of Origin (RGGOs), on Sept. 1, 2025.

This reflects the growing trade and increased fungibility of UK waste RGGOs that have attained International Sustainability and Carbon Certification (ISCC). A growing number of UK production sites have now attained ISCC certification. Certified waste RGGOs also have greater access to continental European markets, given the increasing granularity of data provided by the Proof of Sustainability that accompanies certified volumes.

Platts will launch daily assessments for current-year and year-ahead vintages for certified UK subsidized waste RGGOs and utilize the carbon intensity value definition for waste certificates of 25 g to 0 gCO2e/MJ, reflecting a minimum trade volume of 1 GWh.

The spot assessment will reflect transactions for the current year vintages where certificates have a minimum validity of three months from the date of transaction. The forward-year assessment will reflect transactions for delivery in the next calendar year of contracts that are issued in that same calendar year.

The assessments will be published in GBP/MWh with a conversion published in Eur/MWh.

Certification is considered a voluntary standard achieved by a producer of biomethane, which the market accepts as improving fungibility of the associated guarantee of origin. This includes, but is not exclusive to, standards such as ISCC and REDCert.

The assessments below will be published to a 4:30 pm London timestamp and follow the UK holiday calendar.

The following assessments will be launched Sept. 1:

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