Wind technology has advanced significantly over the course of the past ten years. The United States has increased its wind-power output by 30% year over year. Wind turbines collect kinetic energy that wind produces and turns it into usable electricity. Because wind power is a growing industry, it has been adding jobs around the country, more than 100,000 across America.
The typical wind turbines is 80 meters tall with a large steel support hub and three attached blades. The nacelle houses the shaft, gearbox, generator, and controls for the turbine. Information is gathered on the blowing winds which guides the turbine to face the direction of the strongest wind. This allows the turbine to collect the most energy.
The modern turbine will typically begin to generate electricity once wind speeds are up to six to nine miles per hour. These speeds are known as the cut-in speed. However, if wind speeds are too great, then the turbines will shut off. On average, turbines can generate electricity over 90 percent of the time.
"A wind farm is a large number of wind turbines that are built together". Wind farms function as a single power plant that sends electricity to the grid. The electricity generated from a wind farm travels to the power grid. One the energy is on the main grid, utility operators can send the electricity to where it is needed.