An information distribution server 50 acquires owner information on owners of a plurality of electronic devices 1 charged by a charging device 20 from the electronic devices 1 through the charging device 20, determines a configuration of a group constituted by a plurality of owners who are charging the electronic devices 1 by the charging device 20, by using the plurality of pieces of acquired owner information, acquires information corresponding to the determined configuration of the group from a database 40 that stores information according to a configuration of a group constituted by a plurality of owners, and causes the acquired information to be transmitted to the electronic devices 1 charged by the charging device 20 from the charging device 20.