Fig. 4
From: The potential contribution of biogas to the security of gas supply in Germany
Current contributions of biogas and biomethane to gas consumption. FED refers to the amount of energy after conversion of biogas or natural gas to heat and/or power. PED refers to the energy content of an energy carrier prior to conversion, meaning that final energy output will be lower due to conversion losses depending on the efficiency of a combustion process in the case of energetic uses