BaNosser,
Have you looked at these brand spanking new solar shingles that were just announced by Dow? Supposedely they go on just like regular shingels; and are supposed to be cost effect relative to other shingles. (I haven't done the math on them myself). Maybe they are worth looking into? Just a thought...
http://news.dow.com/dow_news/corporate/2009/20091005b.htm
- 67GTO