A method and system for distribution of stand-by electric power via a network separate from the standard or ordinary electric power network is disclosed. Voltages are transformed/produced in voltage sources, TR and then branched off in control devices, S, to devices, A. The devices, A, distribute the voltages to loading equipment, for instance telecommunications devices, network equipment or medical equipment. Furthermore, surveillance devices, O, communicate with the voltage sources, the control devices, and the devices, A, to control electronic power drains, and to transfer control orders for execution.