1. By: Harsh Shah David Fontana Dan Leonard Bobby Gylling

2. Earliest use in sail boats First windmills used for: GGrain-grinding WWater pumping Vertical Windmill  Made in Persia  500-600 A.D. Modern Windmill  Steel blade  6 Million installed  First one for electricity

3. Requirements  Turbine  Generator  10 mi/h winds Types  Offshore nshore  Near-shore

5. $8000-$1,500,000 Pays for itself over time Funded by Government or Investors Depends on distance to city Subsidies – tax cuts

6. 30¢ per kilowatt-hour in 1980 5¢ per kilowatt-hour today 80% decrease Continue to decrease  Larger and more plants  Technological advances

7. Theoretical Potential Output  Satisfy energy need 5 times atisfy electrical need 35 times Actual Predictions  Only 20% captured  Requires 13% global land  Distance barriers

9. Least polluting alternative fuel Clean fuel  No Fuel o Emissions  Land is only resource Indirectly reduces emissions

10. Wild birds are endangered Noise pollution  Interfere with TV signals nterfere with sea animals Visual effect

11. http://youtube.com/watch?v=nt3mGDZmdYQ