Wind power is the conversion of wind energy into useful forms of energy through wind turbines, windmills, and sails. It is a renewable source of energy. For homeowners with at least half an acre of land in a windy area, a wind turbine could provide a reliable source of energy. Building a small wind turbine costs around $1,500-2,000 while constructing an entire wind farm costs $1.3-1.7 million. The closest wind farm to the authors' location is 30 miles away and has 12 turbines. Wind energy has reduced global warming by efficiently generating electricity without pollution.