Time's up.Photo: elfonThe California Legislature is moving to put into law a regulation requiring the state's utilities to obtain a third of their electricity from renewable energy by 2020. But how did California's three big investor-owned utilities do in meeting a previous mandate to secure 20 percent of their electricity supplies from carbon-free sources by the end of 2010? Close, but not quite. Overall, the three utilities -- Pacific Gas & Electric, Southern California Edison, and San Diego Gas & Electric -- are getting 18 percent of their electricity from wind farms, solar power plants, geothermal, and biomass facilities, according …
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