Horizontal Wind Turbine
Horizontal wind turbines (HAWT) are the most common style of wind turbine used today. They are the most efficient available wind turbine in today’s market.
A horizontal wind turbine is classified as horizontal because the axis of the rotating turbine is horizontal, or parallel to the ground.
The HAWT as many advantages if you compare it to a vertical wind turbine.
But, the biggest disadvantage of the HAWT is that it needs to be facing the wind in order to operate efficiently.
Some HAWT systems will be constructed with a wind vane and yaw mechanism, which will automatically turn the nose of the turbine to face the direction of the wind.
The diagram below shows the rotating axis of the horizontal turbine: