The produced methane and methanol are transferred in a centralised storage unit, where the fuels are kept in compressed (CNG) and liquid form, respectively. From this centralised location, the energy carriers collected from several biogas plants with power-to-X are either used as fuels for electrification or delivered to a steam reforming unit to produce H2 . These units can be operated either with or without CO2 capture units, leading to different impacts on carbon emissions and operational costs .