A solar power generation system is provided which can disconnect serial connection of a plurality of solar power generation panels in case of fire and prevent electric shock to a worker by water jetting. A solar power generation system 110 for converting solar energy to electric power includes a plurality of solar power generation panels 111 which is connected in series and a switch 115 which enables to disconnect or connect the serial connection of the plurality of solar power generation panels 111, and the switch 115 operates when receiving a specific control signal. This makes it possible to disconnect the serial connection of the plurality of solar power generation panels 111, and prevent electric shock to the worker by water jetting in case of fire.