Take a look here for information too:
http://www.solarexpert.com/

They've got a lot of great info there. I've been meaning to delve into that area for quite some time, but haven't gotten around to it yet. (This Year!) Our Local Utility (LIPA) is giving instructional seminars I think and saw that they are giving rebates of $6 per Watt as an incentive to install solar.

Bill


Bill