FOLSOM – Californians on Wednesday are being asked to conserve electricity as predicted high temperatures ramp up energy demand and tighten available power supplies.

The California Independent System Operator, on Tuesday issued a statewide Flex Alert, which will run from 4 p.m. to 9 p.m. Wednesday.

“With above-normal temperatures in the forecast across much of the state tomorrow, the power grid operator is expecting an increase in electricity demand, primarily from air conditioning use, and is calling for voluntary conservation steps to help balance supply and demand,” the ISO said in a statement Tuesday afternoon.

On Tuesday, several Bay Area cities recorded triple-digit temperatures, including 104 degrees in Concord and 101 degrees in Santa Rosa, according to the National Weather Service. Livermore topped out at 107 degrees, breaking the previous record of 105 set in 1951. The heat wave isn’t expected to last long and could begin to subside as soon as Wednesday.

Residents are being urged to take steps to conserve electricity such as turning off all unnecessary lights, delaying use of major appliances until after the alert expires and setting air conditioner thermostats to 78 degrees. The ISO said those actions can help stabilize the grid and prevent additional emergency measures, including power outages.

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