#7 Excellent ideas here.
Love the colors. Especially like the contrast between the orange sun in the bg, and the green/blue color gradient on the 'swooshes', could you please make the 1 'swoosh' underneath it the same color?
Also - is it possible to bend the swooshes into a bit more of a windmill shape? maybe (just a suggestion) you can find some inspiration here:
http://www.allsmallwindturbines.com/images/turbines/MARC-Twister-1000-T%20.jpghttp://www.allsmallwindturbines.com/images/turbines/helixwind25.jpghttp://www.allsmallwindturbines.com/images/turbines/vertikalrotor0.3.jpgThe font is just ok, could we try a little bit more unique font(s)?
Altogether extremely promising, thanks so much!