How Wind Turbines Work
In fact wind is a form of solar energy (of course not illustrated through sunlight). Winds are caused by the uneven heating of the atmosphere by the sun, the irregularities of the earth's surface, and rotation of the earth. And wind flow patterns are modified by the earth's terrain, bodies of water, and vegetation. Humans use this wind flow, or motion energy, for many purposes: sailing, flying a kite, and even generating electricity (this is what we need for a green energy).
The terms wind energy or wind power describe the process by which the wind is used to generate mechanical power or electricity.
Wind turbines convert the kinetic energy in the wind into mechanical power. This mechanical power can be used for some specific tasks (such as grinding grain or pumping water) or a generator can convert this mechanical power into electricity.
So how do wind turbines make electricity?
Simply stated, a wind turbine works the opposite of a fan. Instead of using electricity to make wind, like a fan, wind turbines use wind to make electricity. The wind turns the blades, which spin a shaft, which connects to a generator and makes electricity.
This aerial view of a wind power (wind energy) plant shows how a group of wind turbines can make electricity for the utility grid. The electricity is sent through transmission and distribution lines to homes, businesses, schools, and so on.
