Totallly Clean and most efficient design for wind power

Helix Savonious Design Wind Turbine.

Though the vertical design ensure optimal wind capture but with horizotal design, more wind can be funnel through a tube and gain the most power without losing any energy. and a horizontal design turbine would take less space and more stable to setup on top of the roof. and with it, a very small wind will be captured to generate power.

check out the vertical design at http://www.inhabitat.com/2007/11/08/helix-wind-turbine-small-wind-gets-smart/
Change to wind power for anyone living in the range of any windy city or tall building. anywhere there's a wind this will work. very little wind power is needed to turn a helix Savonious turbine.