anx_VI__cpt_1__cpt_1__table_4

Case 1 refers to pathways in which electricity and heat required in the process are supplied by the CHP engine itself. Case 2 refers to pathways in which the electricity required in the process is taken from the grid and the process heat is supplied by the CHP engine itself. In some Member States, operators are not allowed to claim the gross production for subsidies and case 1 is the more likely configuration. Case 3 refers to pathways in which the electricity required in the process is taken from the grid and the process heat is supplied by a biogas boiler. This case applies to some installations in which the CHP engine is not on-site and biogas is sold (but not upgraded to biomethane). The values for biogas production from manure include negative emissions for emissions saved from raw manure management. The value of e_(sca) considered is equal to – 45 g CO_(2)eq/MJ manure used in anaerobic digestion. Open storage of digestate accounts for additional emissions of CH_(4) and N_(2)O. The magnitude of those emissions changes with ambient conditions, substrate types and the digestion efficiency. Close storage means that the digestate resulting from the digestion process is stored in a gas-tight tank and that the additional biogas released during storage is considered to be recovered for production of additional electricity or biomethane. No greenhouse gas emissions are included in that process. Maize whole plant means maize harvested as fodder and ensiled for preservation. BIOGAS FOR ELECTRICITY Biogas production system Technological option Greenhouse gas emissions savings – typical value Greenhouse gas emissions savings – default value Wet manure Case 1 Open digestate 146 % 94 % Close digestate 246 % 240 % Case 2 Open digestate 136 % 85 % Close digestate 227 % 219 % Case 3 Open digestate 142 % 86 % Close digestate 243 % 235 % Maize whole plant Case 1 Open digestate 36 % 21 % Close digestate 59 % 53 % Case 2 Open digestate 34 % 18 % Close digestate 55 % 47 % Case 3 Open digestate 28 % 10 % Close digestate 52 % 43 % Biowaste Case 1 Open digestate 47 % 26 % Close digestate 84 % 78 % Case 2 Open digestate 43 % 21 % Close digestate 77 % 68 % Case 3 Open digestate 38 % 14 % Close digestate 76 % 66 %

← anx_VI__cpt_1__cpt_1__table_3__row_18__cell_6 · All articles · anx_VI__cpt_1__cpt_1__table_4__text_1 →

Source: EUR-Lex (Cellar) · retrieved 2026-10-28 · Text as adopted (Official Journal); later amendments are not incorporated in this text.