Green gas production has doubled in the last year.

The UK now has almost 90 biomethane plants injecting gas into the grid, according to a new report from the Anaerobic Digestion and Bioresources Association (ADBA).

The report explores recent growth, developments and market changes in the anaerobic digestion (AD) industry, of which biomethane is one of the popular technologies.

The number of AD plants in the UK has risen from 424 in 2015 to 540 this year, significantly increasing the nation’s capacity to recycle food waste, farm more sustainably and create more low carbon gas and electricity.

The 35% increase in capacity to around 708MW means AD could now power around 850,000 homes.

The report suggests it has already reduced the UK’s greenhouse gas emissions by nearly 1% annually.

The ADBA does warn policy uncertainty could stifle the future growth of the industry.

Charlotte Morton, Chief Executive of ADBA, said: “Incentives for renewable electricity are heavily restricted, which is a huge missed opportunity. With the right support the biogas industry could deliver 250MW of new generation capacity over the next two years – enough to add 10% to our tight winter 2018 capacity margin and bring benefits to farming, recycling and the economy.”

A new survey shows there is a strong public support for bioenergy production in the UK.