Midwest farmers are tilting at wind turbines - Los Angeles Times
I drove through the St. Leon wind turbine farm this weekend. (My son was playing hockey in Morden. His team finished with a bronze) Very impressive, I have not been there in three or so years.
We are considering putting something up at the farm, but we lack the capital (so far).
According to a spread sheet I downloaded our farm's best option would be to wind generate about 1/2 our power need.
I will post the address but I had to adjust my browser to let them track some of my address data to access the site. It's an interesting tool
http://www.smallwindenergy.ca/calculator/wind.php?turbine=4&page=update&costkwh=0.0863&outofrange=0&wind=6&wind_mini=5&wind_small=5.5&wind_medium=5.5&wind_large=5.5&type=1kW