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Climate Adaptation

Looming California Heat Wave May Strain Electricity Supplies

  • Grid managers say all power plants needed, defer maintenance
  • State suffered blackouts last year during historic heat
Photographer: David Paul Morris/Bloomberg

California is about to get hit with a heat wave that could strain electricity supplies and will require all power plants to be available, managers of the state’s grid warned.

“Triple-digit heat” is expected to begin Tuesday and last through June 18, though it’s not expected to trigger rolling blackouts like those that left more than a million Californians in the dark last August, the California Independent System Operator said Friday. Demand for electricity will likely surge enough that the agency advised power plant operators to defer scheduled maintenance, starting Wednesday afternoon.