A guy in Hong Kong developed a sort of windmill that operates in LOW WIND and is a very simple design (unlike most windmills, which need tons of maintenance)
He uses plastic for the building material, to keep costs down. 4 KW/h a day for $250! Wow! That's about 1/100 what solar would cost.
I'm VERY VERY VERY tempted...
http://store.motorwavegroup.com/20-turbines-with-generator-wthout-mounting-fra.htmlHe said his turnaround time is 8 weeks, though. He's the first to invent these, and there will probably be a lot of demand!