Number of sewage gas generating plants in the United Kingdom (UK) 2007-2023
As of 2023, there were 198 operational sewage gas plants in the United Kingdom. Between 2007 and 2023, figures saw a net increase, peaking in the latter year. Sewage gas is a form of biomass used as an energy source, with sewage sludge digestion adding 1,008 gigawatt hours of electricity to the UK's power mix in 2022.