Sizzling temperatures in Friday’s forecast prompted the California Independent System Operator to issue a statewide Flex Alert, calling for residents to conserve electricity between 3 and 10 p.m.
Much of the Bay Area and Monterey Bay region will face excessive heat on Friday and Saturday due to a high-pressure system from the southwest, according to the National Weather Service.
The heat wave is affecting California and the southwest. In the Bay Area, it is expected to ease up on Sunday, only to return early next week.
An increase in electric demand is predicted, mostly due to residential air conditioning, which sparked the statewide Flex Alert on Friday.
Residents are urged to conserve electricity, especially during the late afternoon and early evening, when the grid is most stressed.
Consumers are urged to set air conditioner thermostats to 78 degrees or higher, turn off unnecessary lights, and use major appliances before 3 p.m. and after 10 p.m.