This generator, being of the type made up of rotating joined nuclei of radial palettes or blades, such as helixes, submerged in currents of air in order to rotate the nucleus of a transformer of mechanical energy to electrical energy, has the special feature of including a wide conduit, of reduced height, positioned between the wheels of both sides of a vehicle, the said conduit being completely open at its ends and including on its upper face a transversal aperture and a revolving axis to which all the revolving bodies are joined, half of the same emerging from the upper face of the conduit, and the said axis being mechanically coupled to an energy transformer.