To provide a wind turbine generator having a brushless structure arranged to call attention of a viewer by attaching a light to a movable object, especially, the rotor of a wind turbine generator and lighting the light with generated power thereby obtaining a conspicuous rotating light.

A light source for light such as an LED is attached to a rotor or/and a hub, a power generation coil is attached to the hub side, thereby secures a permanent magnet to the nacelle side.