Air conditioning system

In an air conditioning system (100), a controller (3) enables circuits conducting output of a generator (13) and the direct-current power generating unit (12) to the charger (19) and an output circuit converting direct-current power of the battery (18) into alternating-current power and superimposing the resultant power on wiring if the power supplied to loads detected by a detector is equal to or smaller than the sum of the output of the generator (13) and direct-current power generating unit (12), and enables an output circuit converting direct-current power from the generator (13) into alternating-current power and superimposing the resultant power on the wiring and an output circuit converting direct-current power of the direct-current power generating unit (12) into alternating-current power and superimposing the resultant power on the wiring if the detected power exceeds the sum of the output of the generator (13) and direct-current power generating unit (12).