wind power

I delevered 21 pallets of large bolts and nuts to a job site today in Cheyenne, Wy.
It went to a wind farm. They are putting up more windmills. There is a lot of them there now and a large project going on to install more. The bolts are used to put it together with. I asked the project manager how much it cost to put one windmill up. I had read some where that it was a million dollars per unit. He said that was about right. I counted over 50 of them do the math. A lot of money but the wind blows a lot in Wy. so maybe they will pay for them soon.