Instead of a windmill, try a Sky Serpent...
Rather than a single giant rotor with 50-foot-long blades, Doug Selsam´s "Sky Serpent" design uses several small rotors attached to a single shaft. By placing the rotors in precise positions and angles, each rotor can harvest its own wind, and avoid simply stealing the wake from the adjacent rotor. The entire turbine is hooked up to a single generator, which produces about the same amount of power as a turbine that uses 10 times as much blade material, Selsam says.
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