Don't have much info on small individual house classed mills...they are available here in Canada, and I think from what I have seen their about 3 to 8 feet in diameter (depending on power output requirements) I could be wrong, ....go wind power....Natural.....constant renewable .....no pollution......FREE !!!!!
Here is some info from a bigger wind project here in my area:
http://www.canhydro.com/www2005/proj...wleyridgewind/