Abstract: The energy supply device having a plurality of energy panels in the form of roof tiles, with which a part of a building is covered and which have an energy module serving to absorb solar energy, which energy module is connected to a power supply line. According to the invention at least one metal pipeline is provided on an outer side of the building, which pipeline carries the energy panels that are mechanically and thermally connected to the pipeline, in which a cable channel, serving to receive the power supply line, and at least one fluid channel are provided, through which a fluid heat transport medium can be conveyed, with which thermal energy can be transferred from the energy panel to a thermal energy sink.