To provide a dreamlike power generating device that succeeded in considerable cost reduction such as a low construction cost, a low management cost and a low repair cost very easily only by setting a unit formed as a unit panel type and provided with a rotation band, to the road surface of a vehicle traffic band.

In this road surface power generating device, a unit 2 formed in a unit state and provided with the rotation band inside is installed at the traffic band of a vehicle, and the vehicle 4 advances thereon to acquire electric energy utilizing reverse rotating force by the rotation band provided inside the unit. The part of the road surface 1 may be lowered by the height of the unit panel, and the unit power generating device may be arranged at the low part so as to be flush with the height of the road surface.