Reuters: California Governor Jerry Brown on Monday laid out an ambitious plan for 50 percent of the state's electricity to be generated by renewable resources over the next 15 years and to cut petroleum usage by drivers. Brown, who was sworn in for an unprecedented fourth term, said he would also seek to double the energy efficiency of existing buildings and make heating fuels cleaner. "I envision a wide range of initiatives: more distributed power, expanded rooftop solar, micro-grids, an energy imbalance...