In this photo taken Wednesday Feb. 12, 2020, are solar panels on rooftops of a housing development in Folsom, Calif. When California finalized the nation's first sweeping rooftop solar mandate for new construction last year, advocates pictured a utopia of all homes being built with solar panels, turning the clunky panels into the new norm to help the state achieve state carbon neutrality. But those images of self-sustaining abodes may be dashed, supporters warn, if an electric utility in Sacramento wins a widely watched case on Thursday, Feb. 20, deciding how the new solar mandate will be interpreted. (AP Photo/Rich Pedroncelli)
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