Stationary power storage system

A stationary power storage system, comprising:

• a plurality of power storage devices;
• a plurality of current sensors provided in the plurality of power storage devices, respectively;
• and
• a control device configured to control a current value of each of the plurality of power storage devices, wherein
• each of the plurality of power storage devices is configured to be switchable between conduction and interruption in accordance with a command from the control device,
• the control device is configured to:
• select at least one power storage device to be used for energy management from the plurality of power storage devices and interrupt a current of at least one power storage device that has not been selected,
• for the energy management, control a current value of the at least one power storage device that has been selected,
• during execution of the energy management, acquire an output value, when no current flows, of at least one current sensor of the plurality of current sensors, the at least one current sensor corresponding to the at least one power storage device that has not been selected, and
• perform output correction for the at least one current sensor of the plurality of current sensors when no current flows.