To provide a power supply controller, which can prevent power from going down when apparatuses connected to two or more plug sockets are started at the same time and besides can efficiently start two or more apparatuses, a power supply control method, a program for control of power supply, and a power supply control system.

The power supply controller 100 abstracts the features of the power consumption pattern of each plug socket part as a unit, and educes the relation between the power consumption value and the time from the features of this power consumption pattern, and makes a power supply pattern, based on this relation, and supplies each plug socket part with power, based on the power supply pattern.