INTRODUCTION

INTRODUCTION (Vertical-Axis Wind Turbines)

Throughout human history, wind energy has been harnessed for small-scale applications such as pumping water from wells or operating grain and textile mills. Today, wind energy can be converted into electricity, and the costs of producing wind energy have reduced by 80% since the last century. Now, wind energy is considered the cheapest type of renewable energy available. 

A vertical axis wind turbine (VAWT) has blades mounted on the top of the main shaft structure, rather than in the front like an aircraft rotor. The generator is usually placed at the tower base. Used less often than their horizontal counterparts, VAWTs are more practical in residential areas