By Jonathan Fahey, AP | October 23, 2011 In this Sept. 14, 2011 photo, Tim Johnson poses for a portrait with solar panels on his roof in Philadelphia. Since March, he has generated 50 percent to 75 percent of his electricity with a set of solar panels ... The biggest cloud hanging over the solar industry, the high cost of panels, is ...
Saturday, October 22, 2011
The biggest cloud hanging over the solar industry, the high cost of panels, is ...
By Jonathan Fahey, AP | October 23, 2011 In this Sept. 14, 2011 photo, Tim Johnson poses for a portrait with solar panels on his roof in Philadelphia. Since March, he has generated 50 percent to 75 percent of his electricity with a set of solar panels ... The biggest cloud hanging over the solar industry, the high cost of panels, is ...
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