World Wind Day
was celebrated in 2007 on June 15 and has since became an annual event.
The main goal of World Wind Day is to promote wind power as a clean and renewable source of energy.
Wind power is a key component of many countries efforts to meet their renewable energy targets and reduce their carbon emissions.
The United States is the second largest producer of wind power in the world, after China.
Wind turbines can be used to generate electricity in wide range of wind speeds, from as little as 4 miles per hour to as much as 90 miles per hour.
The first wind turbine was built in 1887 in Scotland by Professor James Blyth
The Largest wind turbine in the world is in Demark
and has rotor diameter of 164 meters.