[JeremyD]

I've been looking at this too - sunny florida makes a good argument - especially to power AC systems. Unfortunately the cost is way up there for the cost benefit. I did design my house with the roof in mind to some day take advantage of this when the cost came down and the efficiency came up. I had the roof designed so you could not see the rear panel area from the street and a large semi protected area at optimal tilt to the sun.