Wind turbines harness the wind’s energy to generate electricity. The turbines, consisting of two or three blades, are mounted on tall towers to capture the wind. Wind turbines can stand-alone for water pumping, communications, or for use by individual homeowners or farmers to supply electric power. Wind farms are clusters of wind turbines that generate electricity. The largest wind farms in the United States are in Texas, which has a total installed capacity of 7,118 megawatts. The following chart indicates the top five states with their capacity for electricity generated by wind: