POWER SUPPLY MANAGEMENT SYSTEM

A power supply management system includes: a charge history information acquisition unit for acquiring charge history information on a charge history of a moving body storage battery; a transmission and distribution network power cost information acquisition unit for acquiring transmission and distribution network power cost information; a stored electric charge value evaluation unit for evaluating a value of an electric charge stored in the moving body storage battery, based on charge history information; and a power supply control unit for determining which of first supply power, discharged from the moving body storage battery, and second supply power, transmitted from a transmission and distribution network, is used by power supply processing, as electric power to be supplied to an electric load, based on a cost of the second supply power and a value of an electric charge, stored in the moving body storage battery.