Wind Power- How Good Is It?

By Clarissa



Wind power. How good is it? Man has been using wind power for a long time. The actual wind mill was invented in China almost 2000 years ago. Only recently have wind mills been used as an energy source. One windmill can only power a few machines at a time. So power companies have built "wind farms" to power neighborhoods and work areas in place of using power lines. These farms of over 600 wind mills can power up to 140,000 homes. Wind farms need to be built in places where the wind blows at least 14 mph. A wind mill is, of course, powered by air. The turbines are connected to a shaft which is a generator inside the shaft and is powered when the turbine spins caused by the air. Wind mills also have an automatic shut off in a wind storm and tornadoes. Wind mills are now paving the way to a newer more efficient way to create energy without damaging the environment.