A power management apparatus (120) includes management information storage means (121) capable of storing a condition under which each consumer management apparatus (100) receives power (first condition) and a condition under which each consumer management apparatus (100) supplies power (second condition), power control means (123) for supplying or received power to or from the consumer management apparatuses (110), and information control means (122) for controlling the consumer management apparatus (110) and power control means (123). Each consumer management apparatus (110) includes a distributed power supply (111), a load (112), and control means (113) that controls the distributed power supply 112. When the information control means (122) detects that one consumer management apparatus (110) has satisfied the first condition, it requests another consumer management apparatus (100) satisfying the second condition to supply power and supplies the power to the first consumer management apparatus (110) via the power control means (123).