Californians braced for rolling blackouts today as a major coastal storm delivered another blow to a state reeling from tight supplies of electricity. Energy officials declared their highest level power emergency, meaning that entire neighborhoods could lose power for an hour at a time to ease the strain on the system. Officials said as many as two million residents could be affected. The Diablo Canyon nuclear power plant north of Los Angeles cut back to 20 percent of normal output because of the storm. Scott Horsley reports.
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