Five years ago, solar power prices slid. Then they edged down and slipped a bit more. Like ice skidding off a rooftop, those once pricey solar panels have moved into a new arena of things that regular people could conceivably afford.
Maybe there’s something to this solar power thing, with it’s renewable-ness and positive ROIs. Major U.S. retailers, who understand narrow profit margins and keeping expenses down better than anyone, have installed hundreds of megawatts of PV panels. See who’s converting to sun power.