To significantly reduce the cost of solar cell power generation method which has been high conventionally, for popularization.

Instead of a conventional method in which solar cells are spread all over the surface, a small solar cell module 2, wherein multiple semi- cylindrical reflecting mirrors 1 are provided in parallel for covering a required area and the light condensed at the focal point of the reflecting mirrors 1 is captured, is provided, thus significantly reducing the amount of use of solar cells. Solar light is always condensed at the focal point of the reflecting mirror module due to a sun-tracking device.