UPDATE (July 9): Cal ISO has extended a Flex Alert to a second day because of anticipated high energy demand amid extreme heat throughout the state.

A second Flex Alert has been called for Saturday, July 10 between 4 p.m. and 9 p.m.

Residents are urged to conserve energy by avoiding use of major appliances, setting thermostats to 78 degrees or higher, turning off unnecessary lights and unplugging unused appliances.

BAKERSFIELD, Calif. (KGET) — State energy officials have issued a Flex Alert for Friday asking residents to conserve energy as demand during extreme heat is expected to put a strain on the power grid.

The California Independent System Operator has called for the Flex Alert for Friday between 4 p.m. and 9 p.m.

CalISO says conservation could ease the strain on the grid and during time when solar energy resources are diminished or unavailable.

Residents are advised to avoid using major appliances during Flex Alert hours. To conserve energy residents are asked to use fans instead of air conditioning, set thermostats to 78 degrees or higher and turn off all unnecessary lights.

When a Flex Alert is in effect, if demand continues to outpace supply, CalISO could call utilities to implement rotating power outages as a last resort. Officials are not expecting that Friday.