Windspire : Backyard Wind Turbine
Windspire is a vertical axis wind turbine which can generate 25 - 30% of the power needed in a home. The design was inspired by a 3 000 years old wind mill used by Egyptians to grind wheat. The 9 meter tall devices can be plugged into household power. Customers can also view in their home computer how much power is generated by the Windspire.
