The scheme reported in figure shows how electricity is primarily used to supply the mobility requirements. The system can be equipped with batteries to operate a peak shaving, allowing for a certain intra-day flexibility. In this study, batteries are accounted to ensure a maximum capacity equivalent to 12 hours of supply. This allows a continuous supply over the day for about 50 % of the solar year. When electricity supply overcomes the demand and the batteries are full, the excess electricity is fed to the chemical synthesis unit, which is interconnected with a biogas plant. The chemical synthesis unit includes an electrolyser, a H2 buffer tank and the synthesis section, where H2 and CO2 obtained from biogas upgrading are mixed and converted to methane or methanol. These products are stored either as compressed natural gas (CNG) or as liquid methanol. The products are transferred to a centralised reelectrification facility, which has a larger capacity than the synthesis location. This allows increasing the efficiency and decreasing the cost of the electrification process by economy of scale. For this reason, it is considered that the reforming/combustion of the energy storage molecules utilises only 1/5 of the capacity of the centralised unit, generating CAPEX saving thanks to the economy of scale. The specific CAPEX considered hence refers to a plant that is 5 times larger than the biofuel output of the designed plant. The electricity production is performed in a combined cycle for methane and in a fuel cell for methanol. The fuel-toelectricity efficiency is similar for the two cases, and it is approximately 50 %. In the future efficiency of methanol turbines could increase significantly, with efficiencies up to 60 % .