US Patent 10031503 Energy management device, energy management method, and energy management system

The present disclosure allows estimation of a future power demand with high precision based on power consumptions in the past. An energy management device 10 according to the present disclosure includes a communicator 111 configured to acquire information regarding a power consumption and a controller 112 configured to calculate a targeted range of a future estimated power demand to be notified to a power company based on the information regarding the power consumption. The controller 112 calculates, for each predetermined time limit, the targeted range based on statistics of the power consumptions acquired over a predetermined number of days.