SYSTEM, COMPUTER-READABLE STORAGE MEDIUM, AND METHOD

A system includes a control unit configured to select, from among a plurality of vehicles, a vehicle to be put on standby in a state where a power supply state is turned on to be able to provide a power resource to a power network, and perform control to bring the selected vehicle into a state where the power resource is able to be provided to the power network, and to cause another vehicle to sleep. The control unit is configured to sequentially select a vehicle, which is to be put on standby in a state where the power resource is able to be provided in order to provide a primary adjustment force to the power network, from among a plurality of vehicles belonging to the same group of groups divided by estimating an amount of power resource which is able to be provided to the power network.