If you have a property of over a half-acre with an unobstructed view and exposure to a good amount of wind, you may be able to significantly reduce or eliminate your electric bill. The Skystream 3.7 wind turbine mounts on a 35 to 70 foot tower and can take a 20 to 90% chunk out of the residential electric bill of those with the right location.
The Skystream 3.7 can generate 400 kw a month with winds of 12 mph. It taps into the existing power company system and starts generating power at wind speeds over 8 mph. As wind speeds increase less power is taken from your power utility, if you generate more wind power than your household can consume your utility meter will actually spin backwards creating a credit.
No wiring changes to your home electrical system are necessary and federal guidelines mandate that local power companies allow your connection. Zoning by-laws usually require a permit to erect the tower. The turbine has 12-foot-long blades, can make about as much noise as an air conditioner and, though no data is in, may endanger the occasional bird.
Price: around $10k