A commercial wind turbine can consist of over 8,000 parts. However, there are three major parts of a wind turbine which are rotor (blades and hub), drivetrain (gearbox and generator) and control system.
When it comes to costs how much each part account for?
Rotor
Drivetrain and Nacelle
Controls, Safety System, Condition Monitoring — (3%)
Tower — (14.18%)