Massive power outage hits San Francisco, shuts down businesses, BART station, cable cars, traffic lights

A massive blackout likely caused by a fire at a PG&E substation swept through San Francisco on Friday, darkening homes and businesses for hours, shutting down a subway station and all the cable cars, and knocking out streetlights across a wide swath of the city. The power outage, which at its height affected 88,000 customers, struck just after 9 a.m. when a fire erupted at a Pacific Gas and Electric Co. depot at Larkin and Eddy streets.
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