A turbine ventilator includes a housing having a hub, a tube having a lower segment secured to the hub, a seat disposed on an upper portion of the tube, an electric generator disposed on the seat and having a rotor and an extension secured to the rotor and extended out of the generator, a carrier rotatably attached to the tube, and a number of blades each having a lower portion secured to the carrier and an upper portion secured to the extension of the rotor for rotating the extension of the rotor relative to the generator in order to generate an electric energy. The extension of the rotor includes a relatively shorter length for allowing the rotor to be effectively rotated relative to the generator by the blades.