Abstract: An energy management method is provided for detecting an energy consumption of at least one consumer connected to an energy supply network, wherein relevant detection values of each energy consumption are detected by a plurality of detection devices and/or calculated from detected values. A switching device is respectively assigned to at least one of the detection devices and/or at least one group of the detection devices. The detection values detected and/or calculated by the detection device and/or the group of detection devices are each provided to the switching device according to a predefined detection device protocol for the detection device and/or the group of detection devices. The respective energy values are transmitted to a central device via a network which connects the central device to all switching devices, according to a predefined central device protocol which differs from the detection device protocol.