A wind turbine is a large, fan-like structure that converts wind into energy that can be harnessed by humans. Wind itself comes from kinetic energy in the air, caused by uneven heating of the atmosphere by the sun, the rotation of the earth, and irregularities on the earth’s surface. The wind turbines convert the air’s kinetic energy into either mechanical or electrical energy, which can then be used to power the utility grid. The turbines come in a variety of sizes and at times are placed in groupings called wind farms–they can power individual homes or larger communities depending on the size of the turbine and the number grouped together.
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