Federal regulators have told six utilities and grid operators that they violated reliability standards during a 2011 blackout that left millions without power in Southern California and Mexico.
More than 4,000 customers in the areas of Chatsworth and Porter Ranch are without power Sunday evening.
Authorities say electricity has been fully restored to Southern California Edison (SCE) customers impacted by an underground vault explosion in Irvine.
Some Southern California residents are outraged by a state bill that would allow three utility companies to charge customers up to $10 a month to cope with the loss of revenue due to the popularity of solar panels.
San Diego Gas & Electric on Friday restored power to all 123,000 customers hit by an overnight outage in San Diego and Orange counties when two transmission lines tripped offline simultaneously near the Marine Corps base.
It could be a long, hot summer for Orange County residents and businesses who may face power shortages following the shutdown of the San Onofre nuclear power plant.
A federal panel Monday sided with environmentalists who have called for lengthy hearings on a plan to restart the ailing San Onofre nuclear power plant — a decision that further clouds the future of the twin reactors.
Electricity Saturday was restored to four Anaheim-area hotels after two suspected copper thieves allegedly caused a power outage.
The agency that coordinates the state’s electricity supply said Tuesday that California should have adequate amounts of power on hand this summer.
Electricity Sunday was restored to a San Pedro neighborhood hours after an alleged hit-and-run driver struck a power pole.
Newberry Springs residents are angered by the construction of a 27-acre solar farm they claim has ruined their views of the mountains.
The troubled San Onofre nuclear power plant in California could be restarted safely and run at full power, but the risk of a breakdown would increase to vexing levels after 11 months.
Steps are quietly being taken to prepare for possibly restarting the troubled San Onofre nuclear power plant.
Federal regulators Wednesday pressed the operator of the San Onofre nuclear power plant for more analysis on its damaged steam generators.
Power has been restored to most Southern California Edison customers in the Malibu area.