You buy a wind turbine like this or that, then and you hang it on a kite of the corresponding size, or a blimp like TARS as mentioned on this topic, or even a helium inflated shapewave® Sharp rotor.
You buy a wind turbine like this or that, then and you hang it on a kite of the corresponding size, or a blimp like TARS as mentioned on this topic, or even a helium inflated shapewave® Sharp rotor.