POWER MANAGEMENT SYSTEM

A management system (28) includes a plurality of power management sections (32), (36), (38), (40), and (42) which manage respective power information, by dividing the power information of an entire facility complex into a plurality of management ranges, and a system controller (30) which is connected to each of the power management sections (32), (36), (38), (40), and (42) by a communication element and executes power management of the entire facility complex. Data such as a saved energy amount, CO 2 reduction amount and the like calculated in the system controller (30) is displayed by a display section (48).