Renewable Gas Guarantees of Origin (RGGOs)

The GGCS IS system labels each registered kWh of green gas electronically with a unique identifier known as a Renewable Gas Guarantee of Origin (RGGO), rounded to the nearest kWh. This identifier contains, for each kWh of green gas, information in code form about:

  • the technology and feedstock from which it was produced (for example, biogas from AD, landfill gas or syngas from gasification)
  • the month and year in which it was produced (MM/YY)
  • the part of the UK in which it was produced (England, Wales, Scotland, N. Ireland)
  • the registered producer
  • the kWh number, part of a sequence or range relating to that producer’s green gas injected into the grid that month.
Founder Partners and Associate Members:
British Gas
Thames Water
Milton Keynes Council
National Grid
CNG Services Ltd