Anaerobic digestion (AD) is the breakdown of organic material by micro-organisms in the absence of oxygen. The AD process produces biogas, biomethane, and a biofertiliser, rich in nutrients.

The AD market in the UK is growing rapidly, and is set to play a key role in the UK’s renewable energy mix and impact the UK’s Net Zero targets.

AD provides the ideal circular solution to the issue of food waste. The UK produces an estimated 9.5 million tonnes of food waste annually, only 20% of which is recycled, the remaining goes to landfill and recovery, which involves incineration.

Graphic showing foodwaste and agristock Circular economy


Corbiere Renewables plant
AD at Earnside Energy
Pipes at East London Biogas
Silos at Energen Biogas
AD at Granville Eco Park
Granville Eco Park
AD plant at Redstow Renewables
Warrens Group facility
Offices at Warrens Emerald Biogas


We are proud to operate to the highest H&S, Environmental and Quality standards within the industry, offering a responsible and transparent service and fostering constant progression across our sites.

Through constant improvement and innovation, we are committed to adding value for customers and providing the highest quality employment and working environments for our team across the UK.