The objective of this scientific research was to optimize a hydrogen supply chain for the 400 Hz electrification of aircraft parked at the gate during layovers. The target airport is Bastia Airport in Corsica (France). We designed a hydrogen system incorporating photovoltaic shade structures, an electrolyzer to split water molecules, a hydrogen storage tank, and either a fuel cell or a hydrogen combustion engine to power e-GPUs, 400 Hz power outlets, and pushbacks. The optimized design covers 100% of the airport’s annual power needs for all flights, including the energy requirements of the e-GPUs and pushbacks. We have also secured the power supply for the control tower using this same hydrogen system, and the surplus PV energy has been partially used for self-consumption by the terminal.