POWER CONTROL SYSTEM AND METHOD AND PROGRAM FOR CONTROLLING POWER CONTROL SYSTEM

If electric power is used at a level such that a circuit breaker will shut off when a user operates a device, it is not possible to use the device which the user wants to use unless usable power is increased by intentionally performing an operation of reducing electric power of other devices in use. A power control device (3) includes a priority setting section (16) capable of setting a use priority of a home appliance connected wirelessly or via cable or an adapter connected to the home appliance. The home appliance or the adaptor connected to the home appliance operates within the usable power of a result of the inquiry to the power control device (3). When there is no excess in usable power over the required power in the inquiry, the power control device (3) reduces the power of a device having a lower priority than the device which has transmitted the inquiry in order to use the device with the higher priority.