Wind power

Wind power is a sort of energy, sort of. It is collected by machines such as windmills or sails. In windmills, a rotating fan-shaped structure powers an electric generator or a set of gears linked to machinery. Sails are used to power ships. Wind power is free and renewable, but has the disadvantage of being inconsistent.

External links

• http://cleantechnica.com/2009/09/15/offshore-wind-vital-to-the-future-of-europe/