Abstract: A stored power production source management device of an embodiment includes an acquisition unit, a power storage management unit, and a discharging management unit. The acquisition unit acquires first information indicating a power supply source when a power storage is charged. The power storage management unit stores information indicating a power supply source for power stored in the power storage in a data storage in association with an amount of stored power on the basis of the first information. The discharging management unit specifies a power supply source for the power to be discharged on the basis of information indicating the power supply source stored in the data storage when the power storage is discharged, and subtracts the amount of power to be discharged from the amount of power corresponding to the specified power supply source in the data storage.

Abstract: According to one embodiment, an electric power supply-and-demand control apparatus includes a measuring module which measures an output power characteristic of dispersed power sources arranged in various places in an electric power system. The electric power supply-and-demand control apparatus includes a determination module which determines based on the output power characteristic measured by the measuring module whether to set each of the dispersed power sources in various places as a dispatching object for an electric power supply-and-demand plan at a specific time on a specific date.