Young Curly Blonde Girl Wearing A Headband In The Wind Farm With Wind Turbines

Types
Wind turbines can rotate about either a horizontal or a vertical axis, the former being both older and more common.
• Horizontal axis
Horizontal-axis wind turbines (HAWT) have the main rotor shaft and electrical generator at the top of a tower, and must be pointed into the wind. Small turbines are pointed by a simple wind vane, while large turbines generally use a wind sensor coupled with a servo motor. Most have a gearbox, which turns the slow rotation of the blades into a quicker rotation that is more suitable to drive an electrical generator.