Wind is a variable energy source. It blows in accordance with weather conditions, height, and location. The wind blows more at levels high above the ground than it does at the surface. Some areas are more windy than others. Harnessing the wind for the generation of power depends on the construction of wind turbines that are tall enough and located in optimally windy locations.
National energy independence will be served by the use of wind to produce electricity. The hope is that if the variability problems of wind power can be solved, the cost of electricity from wind sources will be much less in the future than the cost from other sources of non-renewable energy.