I know this is the home of tech skeptics, and I respect that. But this one has me interested.
http://sheerwind.com/
It brings the mechanics down to the ground level. No big props moving at high speed through the air. In theory, you could put chicken wire over the openings and reduce bird kills to nearly zero.
The claims of increased output are a bit unbelievable to me, but even if it just gets the same output, I think it is a better design than your standard windmill.
Opinions?