Food waste is collected separately at the kerbside and taken to the AD plant. Any contamination is removed such as plastic, biodegradable bags and cutlery. The waste is then chopped up and put into a huge sealed vat.
As the food waste biodegrades it produces methane which is burnt to create electricity or turned into fuel for vehicles. The remaining waste product, or digestate, is then sold as compost.
Biodegradable bags will not degrade in Anaerobic Digestion.