California gas prices could skyrocket by as much as 75 percent by the end of 2026 with the expected shutdown of oil refineries in the state, according to an analysis released May 5 by a researcher at the University of Southern California (USC).
Regular gasoline prices could rise from an average of $4.82 in April 2025 to as high as $8.44 a gallon by the end of next year, said the report, authored by Professor Michael Mische at the Marshall School of Business.
Two Phillips 66 refineries in Los Angeles—about 8 percent of the state’s oil refining capacity—are slated to close by the end of this year. Valero Energy Corp. also announced last month it will shut down or restructure its Benicia refinery in the San Francisco Bay area—which accounts for about 9 percent of refining capacity—by April 2026, increasing concerns over gas prices and supply….