Unless you are a structural engineer, don't even think about a home made tower (or a cloned one) - Theres an awful lot more to a wind turbine tower than a bit of steel holding it up in the air. Resonance, making sure the natural frequency doesn't clash with the excitation frequency of the turbine, fatigue analysis to name but 3....

We've heard of a number of folk doing their own thing and trying non manufacturer supplied towers and it ALWAYS ends in grief.

Manufacturers put a lot of effort into making sure towers are compatible with the turbines, for good reasons, so its a lot less hassle just to use those towers in the long run.

Cheers

Bryan
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Bryan Rendall