| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a roof having solar cells in which less margin portions without solar cell panels are left, and a roof surface is effectively utilized. SOLUTION: A plurality of solar cell panels 10 to convert the solar beam into the electric power are provided on a roof having solar cells. A plurality of kinds of solar cell panels 10A, 10B different in output voltage are provided as a plurality of solar cell panels 10, and these solar cell panels 10A, 10B are combined with each other to form a plurality of solar cell groups G1-G4. These solar cell groups G1-G4 are same in output voltage. The whole roof area can be effectively utilized since the small solar cell panels 10B are installed in a margin area left behind after the solar cell panels 10A as many as possible are installed.</p> |
