Patent ID: 7830033

Claim:
A system for producing electricity from wind energy, comprising: a turbine section comprising: a shaft; at least first and second turbines rotatably mounted to said shaft and arranged to rotate independently of one another and in opposite directions about said shaft when subjected to a same wind; and at least one generator coupled to said at least first and second turbines and arranged to convert rotation of said first and second turbines into electricity, said at least one generator being mounted so as to be fixed relative to said shaft, the magnitude of electricity generation by said at least one generator being related to a torque induced on said shaft by said at least one generator responsive to rotation of said turbines relative to said shaft, said turbines having aerodynamic characteristics which provide in combination with the effect of the electricity generation by said at least one generator a situation where a sum of torques acting on said shaft is substantially zero; wherein electricity generated by said at least one generator is conducted to an energy utilization device for usage or to electricity storage.