http://www.biogas-info.co.uk/index.php/ad-map.html This map shows operational anaerobic digestion plants in the UK (excluding those in the water industry * ). Plants can be filtered by the following categories: Agricultural – an anaerobic digester exclusively using slurries, manures, crops or crop residues produced on-farm Community – an anaerobic digester predominantly using food waste, collected from multiple sources Industrial – an anaerobic digester used to treat on-site waste, such as brewery effluent or food processing residues Each of these categories can be further filtered by the end-use of the biogas : Heat and/or Power ( CHP ) – an anaerobic digester generating biogas which is burned on-site to generate heat, power or both Biomethane to Grid (BtG) – an anaerobic digester generating and upgrading biogas, to derive biomethane for injection into the national gas grid