A power conditioning system that includes a fuel cell to be connected to a load, a fuel cell converter connected between the fuel cell and the load, the fuel cell converter converting an output voltage of the fuel cell at a predetermined required voltage ratio, a battery connected in parallel with the fuel cell with respect to the load, the battery serving as a power supply source different from the fuel cell, a battery converter connected between the battery and the load, the battery converter converting an output voltage of the battery at a predetermined required voltage ratio, a voltage adjusting unit configured to adjust an output voltage of the battery converter to a predetermined voltage to generate a DC link voltage for synchronizing an output voltage of the fuel cell converter and the output voltage of the battery converter, and a ripple suppressing unit configured to cause the battery converter to suppress a ripple component of the DC link voltage in a situation where the DC link voltage is higher than the output voltage of the battery.