POWER CONTROL DEVICE, POWER CONTROL METHOD, AND POWER CONTROL PROGRAM

A power control device includes a supply power prediction unit that determines excess or deficiency of a power supply state according to a power supply and demand situation for each server deployed in a data center that changes at least one of a total number of servers operating in the data center and a power setting of each server in operation so as to eliminate excess or deficiency of the power supply state. The power control unit further changes disposition on a server of a service program operating on each server depending on the power supply state.