A massive power outage plunged large swaths of San Francisco into darkness Saturday, knocking out electricity to about 130,000 homes and businesses and leaving self-driving cars stalled in city streets.
Pacific Gas and Electric Co. did not immediately say what caused blackouts to roughly one-third of the utility company’s customers in the city. Fire officials posted on X at about 3:15 p.m. that at least some of the blackouts were caused by a fire that broke out inside a PG&E substation at 8th and Mission streets. -- More...

