To supply low-cost electric power by use of natural energy to contribute to natural environment conservation measures, such as a prevention of global warming, by electrically combining a solar generator with a small-size wind power generator installed by use of a space of a spot suitable for wind environment, such as a roof or a top part of a building (house, building, micro tower or the like) so as to compositely generate power.

In this wind power generator, a drive rotation shaft 1 of a windmill prime mover mechanism 30, wherein a rotor 2 having cross-shaped vanes 3 and a power generator 4 are directly connected is inclined by 45 degrees, while a vertical shaft 10 provided to a stand 11 of a mounting mechanism 40 and fixing bands 7 of the power generator 4 are turnably joined and supported by a joint 8 and a coupling 9. The wind power generator has both the characteristics of dynamic lift and drag occurring in the vanes 3 of the rotor 2. By providing the wind power generator on the stand 11 mounted on a building 22 and electrically combining a solar generator with the wind power generator to complement the wind power generator, a distributed or independently completed hybrid power generating system is constituted.