There are a lot of folks out there building their own using car alternators, treadmill motors and so forth as the generator and old tv antenna towers for mounting it on.

You should do plenty of research and take safety VERY seriously. Improperly installed windmills can kill.

12 ac pond in NW Missouri. 28' max depth at full pool. Fish Present: LMB, BG, RES, YP, CC, WB, HSB, WE, BCP, WCP, GSH.