James Newtons Massmind wrote: > As an example, I have a system on my roof right this moment that generated > $1,400 of electricity last year. It cost $21,000 installed (before the > rebates) so it will pay for itself in 15 of its 25 year lifespan. Actually > it will pay for itself in 10 years because of the federal and state > incentives. If the panels generated less power than it took to make them, > how could that ever be possible? See: > http://www.massmind.org/other/solar/case1.htm My disappointment with solar is a local problem. We get a lot of hail storms. Any system I might install and attempt to make it to "payback" on, would likely be destroyed or heavily damaged every three years, on average. Some panels can survive a pretty good pounding, but when Mother Nature drops 3/4" hail on your house every three to five years, solar panels on the roof don't seem like such a good idea. Nate -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist