People want wind energy but from what I understand about windmills the cost of building, installing and maintenance you will never recoup the initial investment back from the energy it can produces so it it really saving the environment. The material have to come from some place. We have thousands of them around my area at any given time only about 2/3's of them are actually running the other third are in need of maintenance of some kind. See lots of blades getting replaced from lighting strikes, brakes failing and they self destruct. I would be curious what the actual up keep cost is for one windmill is verses the energy it produces but I bet we will never know what the true numbers are. Birds of pray won't fly by them so the rabbit and rodent population takes off. There is a lot more to wind energy than slapping up a windmill and thinking we are green now. Just sayin.