Faller Gmbh
Nordex Wind Generator

2 x 2 x 13-3/16" 5 x 5 x 33cm
Walthers Part # 272-130381, p. 466 Walthers 2012 HO Scale Reference
HO scale, $59.99, currently in stock at Walthers

 
Based on a prototype installed in the Black Forest in 1996, it's typical of modern units seen around the world. Includes 12-16V AC motor and three-blade propeller.