To arrange a plurality of wind power generators, without requiring a wide place with a simple structure by arranging a plurality of posts between upper and lower supporting wires installed on the same surfaces at least, and rotatably attaching the posts as a shaft.

A horizontal shaft wind power generator 3, on which impellers are attached in a propeller shape and which is nearly horizontally in the wind power direction, and a vertical shaft wind power generator which is nearly vertical in the wind power direction, are disposed between two masts 5, 5 which are vertically erected, at clearances where a movable part is not interfered with vertical support wires 1, 1 installed in a space on the same surfaces at least. Since a plurality of wind power generators 3 and the like are arranged with a simple structure of the masts 5, the support wires 1, 1 and the posts 2, it is possible to obtain large power at low cost, without requiring a wide installation place and without enlarging the overall size.