Different Rotor Ideas For Wind Turbines

This One Is Great. Designed by stormbladeturbine.com

The extended post will contain different rotor designs I have found.
There are a wide variety of rotors and I would like to hear both positive and negative feedback on some of these.

check out Grimshaw Aerogenerator:

A Colossal Wind Turbine at:

http://www.ecogeek.org

The Windspire is offered by Mariah Power at
http://www.mariahpower.com/