The entire tower and the wings are seen here. A major error shows clearly here. Normally windturbines have three wings, this one only has two! Admittedly this was easier to build. I'll go for three wings in a later edition.
The top is where alle the fun happens. The wings are attached to a couple of technic bricks, mounted on a technic axle. A single motor drives the wings. The motor is geared down 13.5:1 and that is actually still a bit too fast.