For centuries, people have been harnessing the power of the wind to work for them. Now the wind can be used to generate electricity cleanly, reliably and economically.There will always be times when there is no wind or not enough to run a wind turbine. That means that wind power cannot be the only source of electricity generation. However, combining the power output from wind farms in different places can help even out the variations. Wind power installations can be as simple as one small turbine to supply electricity to a single home or farm, or as large as several thousand turbines, supplying energy to a small city. A group of wind turbines in one power generation development is often referred to as a wind farm. Most wind turbines are made in Germany and Denmark and exported around the world.