Greg Bosscawen, manager of renewable energy for Pacific Gas and Electric Co., walks past solar panels at PG&E's Vaca-Dixon solar energy site near Vacaville, Calif., Tuesday, April 12, 2011. Gov. Jerry... more 
Greg Bosscawen, manager of renewable energy for Pacific Gas and Electric Co., walks past solar panels at PG&E's Vaca-Dixon solar energy site near Vacaville, Calif., Tuesday, April 12, 2011. Gov. Jerry Brown signed legislation, Tuesday, that would require California utilities to get one-third of their power from renewable sources, giving the state the most aggressive alternative energy mandate in the U.S. less 
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Associated Press | Photo By Rich Pedroncelli
Tue, Apr 12, 2011 3:31 PM EDT