Apparatus and method for dispensing liquid and gaseous hydrogen

A service station, in particular a hydrogen service station for filling a motor vehicle with a gaseous and/or a liquid medium, in particular with gaseous or liquid hydrogen, is disclosed. The station includes a) a reservoir for storing a liquid medium, b) a liquid medium dispensing unit which is supplied with the liquid medium from the reservoir, c) a compressor, an evaporator, a heating system, and an intermediate reservoir for intermediate storage of a compressed gaseous medium, d) a gaseous medium dispensing unit mounted downstream of the intermediate reservoir, e) a fuel cell which is supplied by the gaseous medium coming from the reservoir and/or the intermediate reservoir and supplies power to the compressor, and f) a control unit which is powered by the fuel cell and used for controlling the compressor, the gaseous medium dispensing unit and/or the liquid medium dispensing unit.