Provided are an arrangement information acquisition unit that acquires arrangement information indicating a position where a charging device for charging one or more storage batteries is arranged, a user position acquisition unit that acquires user position information indicating a position of the user, a charge state acquisition unit that acquires information indicating a charge state of at least one of the one or more storage batteries at specific time, and a state information generation unit that generates information to which (i) a charge state at the specific time and (ii) a charge state at an estimated time of arrival of the user at the charging device are associated for at least one of the one or more storage batteries, in accordance with (i) the arrangement information acquired by the arrangement information acquisition unit and (ii) the user position information acquired by the user position acquisition unit.