there are different types of windmills which windmill to use is dependent on the requirement. wind turbines it is a three rotor designed windmill this windmill are used to convert the kinetic energy i.e energy of motion of the wheel due to wind into mechanical energy.it is connected to a generator which converts into electricity.
virtually every small town and polder in the netherlands has one or more windmills. the zaanstreek alone has had over a thousand industrial windmills each with a name and well-documented history (see list of windmills at zaanse schans ).
a windmill is a structure that converts wind power into rotational energy by means of vanes called sails or blades specifically to mill grain () but the term is also extended to windpumps wind turbines and other applications. windmills were used throughout the high medieval and early modern periods; the horizontal or panemone windmill first appeared in greater iran during the 9th century
the first american windmill was invented by daniel halladay in 1854 in connecticut. halladay patented a windmill that did not require the constant attention of an operator. his windmill was made of wood and required a lot of maintenance. but as time went by metal windmills were introduced and found to be more reliable.
multi-bladed wind pumps can be found worldwide and are manufactured in the united states argentina china new zealand south africa and australia. commonly known in the us and canada as a "weathercock" because it behaves much like a traditional weather vane moving with the direction of the wind (but also measuring wind speed).