Low-Income Homeowners Get Free Solar Panels Thanks to Cap & Trade

Despite plunging prices in the last seven years, rooftop solar arrays remain an expensive home improvement, costing $15,000 or more. A 2013 study by the liberal research and advocacy group Center for American Progress found that 67 percent of solar arrays installed in California went to ZIP codes with a median household income between $40,000 and $90,000. Wealthier areas accounted for almost all of the rest.