Power management equipment, power management method and power management system

The invention provides power management equipment, a power management method and a power management system. The power management equipment comprises a client management module, a data acquisition module and a storage module, wherein the client management module is used for configuring power management client modules on one or more client sides, the data acquisition module is used for acquiring data, related to power management, of one or more user accounts on one or more client sides via the power management client modules, and the storage module is used for storing the acquired data. The power management client modules are used for power management of the client sides.