A
tower comprises a base
tower member fixed on a base in the ground, a lower
tower member hingedly connected at a lower end thereof with an upper end of the base tower member through a hinge and swinging between a
lying position and a standing position, a first stage connecting tower member connected at a lower end thereof with an upper end of the lower tower member, a second stage connecting tower member connected at a lower end thereof with an upper end of the first stage connecting tower member, and a third stage connecting tower member connected at a lower end thereof with an upper end of the second stage connecting tower member. Thus formed tower is raised swingingly around the hinge from the
lying position to the standing position. A
nacelle includes a tower penetrating hole through which the tower vertically penetrates and is formed by a plurality of
nacelle sections divisible around the tower penetrating hole. After the tower is built, a plurality of
nacelle sections are collected around the tower and are connected with each other while the nacelle is penetrated by the tower. Then, the nacelle is lifted up along the tower in that state and fixed to the top end of the tower.