To provide a distributed power supply system, capable of making effective use of energy resources by autonomously performing cooperative operation for each of a plurality of distributed power supply units, attaining equipment scale reduction, and making effective use of each equipment.

This distributed power supply system comprises a wind-power generation unit 110, a photovoltaic generation unit 120, a power storage unit 130, a flywheel unit 140 and a load unit 150 which are connected mutually through a DC bus 100, and a parallel unit 170 with mains for connecting the DC bus 100 to an AC bus 160. Voltage fluctuations in the DC bus 100 are allowed to lie within a prescribed range, and the operation of each unit connected with the DC bus 100 is performed, based on the voltage of the DC bus 100.