SOLAR POWER GENERATION SYSTEM

Through a power cable 12 from a power collection box 10, a power conversion device 3 receives direct current power. The power conversion device 3 converts the received direct current power into alternate current power and transmits it to a power system (not shown). A plurality of air lead-in tubes 20 are laid in parallel. Each of the air lead-in tubes 20 includes a "heat exchange part", an "opening part", and a "lead-in part". The "heat exchange part" is buried in a ground 60 at aground surface on a back surface of a solar cell panel 4. The "opening part" is exposed to the ground surface. The "lead-in part" is an opening that communicates with an interior of a building 2 in which the power conversion device 3 is installed. The air lead-in tubes 20 are constructed so as to draw air in the heat exchange part from the "lead-in part" by using sucking means. As the sucking means, a lead-in fan 22 for circulating air inside the air lead-in tube 20 is provided.