Wind Turbines Have Best Year Ever!

If you had to choose one clean-energy technology that has already proven itself to be revolutionary, it would have to be the windmill. The current incarnation is known as the 3-blade upwind turbine. In the U.S. alone, there are about 45,000 such machines. Last year was the industry's most successful ever with national capacity reaching 60,000 megawatts, enough to power the equivalent of about 15 million U.S. homes. As the wind industry has grown, its turbines have gotten bigger too-so large that a few off shore turbines now top 500 feet in height and cover a 400-foot diameter in the sweep of their rotor blades.