How do wind energy energy sources work?

Wind turbines, or windmills have a generator inside it, which rotate and produce electricity. They don't pollute, but they spoil the view and you need about 1,500 to replace 1 coal-fired power station. They're noisy and if the wind stops or is too strong, the turbine won't spin. This means when there's a high demand its impossible to increase the supply. The initial cost is high and they produce 75-80% of electricity. Its renewable.