Abstract: The degrees of exhaust emission suppression and contribution to the environment are evaluated, and a point is added according to the degree of contribution. A system is configured by including an electric vehicle (100), an electric power company (110), a management center (120), a network (130) that connects these, and the like. A battery of the electric vehicle (100) is charged with electric power supplied mainly by the electric power company (110), and various kinds of charge-related information are transmitted to and received from the management center (120) or the like via the network (130) or the like. At the time of charging, the electric vehicle (100) uses wireless communications, for example, to transmit and receive various kinds of data to and from a server (121) via a radio base station (131) and the network (130).