| 摘要 |
PROBLEM TO BE SOLVED: To provide an energy management device capable of intuitively grasping time length where a load can be operated by electric power supplied from a storage battery device, and to provide an energy management system, and an energy management method.SOLUTION: An EMS (energy management system) 200 comprises: a display unit 240 for displaying an object corresponding to a load 120; and a control unit 230 for controlling a display mode of the object according to a power storage amount V of a storage battery 141 so as to display time length T where the load 120 can be operated by electric power supplied from a storage battery device 140. |
