Patent ID: 8738193

Claim:
A demand control device, comprising: a communication unit for sending and receiving predetermined signals to and from a plurality of electric apparatuses; a total power consumption measurement unit for measuring a total power consumption of the plurality of electric apparatuses; a storage unit for storing a predetermined target power as a target value of the total power consumption, a maximum power consumption of each of the electric apparatuses, and a predetermined operating power target value for each of the electric apparatuses, the operating power target value being a target value for a demand control of controlling one or more electric apparatuses to be in a power-saving operation state; a target power-saving amount calculation unit for calculating a target power-saving amount which is an excess amount of the total power consumption from the predetermined target power; an apparatus calculation unit for calculating a demand control power-saving amount of each of the electric apparatuses, the demand control power-saving amount being a difference between the maximum power consumption and the operating power target value of the corresponding electric apparatus, selecting one or more electric apparatuses from all of the electric apparatuses to create a combination of the electric apparatuses so that a total value of the demand control power-saving amounts of the combination becomes equal to or greater than the target power-saving amount; a demand control information creation unit for creating demand control information for the respective electric apparatuses belonging to the combination, the demand control information including at least the corresponding operating power target value and a predetermined time of operating at the corresponding operating power target value; and a demand request creation unit for creating a demand request which is a signal for requesting operation based on the demand control information for each of the one or more apparatuses selected by the apparatus calculation unit, wherein when the predetermined time elapses, the apparatus calculation unit selects at least one or more apparatuses other than the one or more apparatuses which are in the current combination to additionally create a new combination that is different from the current combination according to predetermined rules, and the communication unit sends the demand request to the electric apparatus selected by the apparatus calculation unit, and the apparatus calculation unit selects the one or more electric apparatuses in order from the longest elapsed time from the time of sending the most recent demand request and creates the new combination.