For instance, the surplus of electricity at the fuelling station can be sold to the neighbouring users, while an equivalent amount of electricity is purchased at the fuel synthesis plant. To correctly evaluate this case, a sensitivity analysis considering the effect of a grid utilisation fee is included. The use of two different electrolysers at the two different location is an option, but it is economically less viable. This is because it reduces the overall utilisation factor of the electrolysis unit: the fuelling station electrolyser would work throughout the year, while the electrolyser at the biogas plant would work only when excess electricity is available. The excess H2 delivered to the biogas plant is used in the synthesis unit, which operates identically to the electricity case. The produced methanol or methane are transported to the final location and stored in liquid or compressed form, respectively. When H2 is needed, due to lack of renewable electricity, methane and methanol are reformed with steam to produce H2. This is performed in a dedicated unit, including steam reforming and water-gas-shift reaction and which can be operated with pre-combustion CO2 capture.