Wind turbines use the motion of the wind to turn a shaft attached to a generator, which makes electricity. The size of the turbine and the speed of the wind determine how much electricity it will make.
Small wind systems can be the most cost-effective home-based renewable energy system, if sufficient land and wind are available. They can potentially decrease energy costs and provide an uninterrupted power supply.
For more information on this technology and to determine if it is right for your customer, please visit the U.S. Department of Energy's website.