It wasn't too long ago that rooftop solar panels were yet another expensive add-on for high end homes, but then again, it wasn't too long ago that only the rich kids at your high school could afford pocket calculators, let alone mobile phones. Affordable solar power is starting to make its way down the income ladder, and a pair of statewide California solar programs show how that's good news for utility customers and taxpayers, too.Affordable ...
http://cleantechnica.com/2013/02/22/in-california-affordable-solar-pow
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