Windmills, also called wind turbines, are used for a wide variety of purposes, which include pumping water, grinding meal into flour, generating electricity and aerating ponds. The use of windmills has increased in popularity since they are considered green, meaning they cause no harm to the environment.
Additionally, windmills offer a cleaner energy alternative to fossil fuels. Windmills operate solely with the wind and do not emit any toxins into the air, which is great for the environment. Since the amount of fossil fuels available for consumption is finite, windmills also offer a solution to the growing energy crisis in first-world countries.