SOLAR POWER GENERATION SYSTEM AND CONTROL DEVICE

A solar power generation system includes solar cell panels, power conversion devices, and a control device; the plurality of power conversion devices convert direct current power supplied from the plurality of solar cell panels into alternating current power corresponding to a power system, the plurality of power conversion devices supply, to the power system, the alternating current power; the control device includes a total output value calculation part, a difference calculation part, and an upper limit command value calculation part, the total output value calculation part is configured to calculate a total active power value indicating a magnitude of currently-outputtable active power from all of the plurality of power conversion devices, the difference calculation part is configured to calculate a difference between a total upper limit command value and the total active power value, and calculate a difference per device of the plurality of power conversion devices.