renewable wind energy

Renewable Wind Energy and other spinning wind-energy devices - more accurately known as Renewable Wind Energy - were used for grinding grain by the 7th century AD, and were in wide use for this purpose and for pumping water by the Middle Ages; Renewable Wind Energy were brought by the French to Canada in the 17th century and were commonly used for grinding grain. Ships have used sails for at least 3000-4000 years. Before the advent of rural electrification systems, wind turbines were also used to generate electricity on farms in N America, notably on the Canadian prairies.