Changes

All grid-connected commercial wind turbines today are built with a horizontal axis type rotor which is installed on top of a tower. Most horizontal axis turbines built today are two- or three-bladed, although some have fewer or more blades. The purpose of the rotor is to convert the linear motion of the wind into rotational energy that can be used to drive a generator. Most of the systems have a gearbox, which turns the slow rotation of the blades into a quicker rotation that is more suitable to drive an electrical generator. Click on the link below to see detailed description about horizontal axis wind turbines.

== Onshore and Offshore Wind Turbines ==