Power management system and server

A server included in a power management system including a plurality of power storages, each of the plurality of power storages carrying out at least one of external charging and external power feed, the external charging being charging of the power storage with electric power supplied from outside, the external power feed being supply of electric power from the power storage to outside, the server comprising:

• a selector that selects at least one of the plurality of power storages;
• a scheduler that makes a schedule for the selected power storage;
• and
• a request processor that requests a user of the selected power storage to control at least one of the external charging and the external power feed in accordance with the made schedule, wherein
• the server
• obtains for each power storage, desire information that indicates at least one of a first desire level and a second desire level, the first desire level indicating a level of user's desire for suppression of deterioration of the power storage, the second desire level indicating a level of user's desire for acquisition of an incentive for meeting a request, and
• carries out at least one of selection of the power storage and making of the schedule based on the obtained desire information.