I've actually been wanting a windmill setup myself. A guy right across the hill from me here has one and it alwaysseems like it's spinning very fast. It takes a half a basement full of cells to hold his power though from what I heard?I think it would take a bit more than that. I was thinking the amp draw might be much. I'll have to warm up the 'Ohm's Law' brain cell.
I worked awhile for a small windmall mfg. Renewable during the day and if your on the grid an 120/12v inverter at night. For some day when I have money to dream.