Climate mitigation efficacy of anaerobic digestion in a decarbonising economy

Anaerobic digestion (AD) – the process of producing “biogas” from organic matter like crops and wastes – has presented itself as the silver bullet to everything from producing green gas for heating and transport, to producing fertiliser for our crops. However, our research shows that, at best, AD is a sub-optimal sticking plaster solution, and at worst, it is sometimes actually perpetuating the problems it claims to solve.