ENERGY MANAGEMENT CONTROLLER, ENERGY MANAGEMENT SYSTEM, CHARGE/DISCHARGE CONTROL METHOD AND PROGRAM

An energy management system (1) includes an energy management controller (2) and a power conditioning system (6) that charges and discharges a storage battery (80) installed in an electric vehicle (8). The energy management controller (2) includes: a charge/discharge controller that is configured to, in accordance with an operation mode having an operation right among a plurality of operation modes, control charging and discharging of the storage battery (80) through the power conditioning system (6); and an operation right granter that is configured to determine an operation mode to which the operation right is to be granted next based on a predetermined transition condition, and to grant the operation right to the operation mode determined thereby.