Well, I should say there not called Windmills as I mentioned above, that's just what most people refer to them as. Actually there Wind Turbines - Anyway , I doubt that tip speed is correct , but I'll find out tomorrow - Maybe .

I just started with WindConnect RMT, a subsidiary of BP Alternative Energy North America Incorporated (Oakville, California) AND Alliant Energy. They recently completed construction and began operation of a $215 million, 130-megawatt (MW) windfarm in Benton County in Fowler, Indiana. I here for phase 2

Geo-technical if your interested -

http://www.rmtinc.com/public/pdf/Wind2_Geotechnical.pdf

Make sure your vested in one of the companies above - I'm guessing 5-10 years you'll be able to retire on that stock if you thru enough in the pot. This is getting BIG really fast. Don't even think I'm kidding. - Prolly the best finacial tip you can get right now.