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Flex Alert issued for hottest days of California heat wave

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SAN DIEGO (KGTV) - Californians are asked to conserve power this week during the hottest days of the heat wave.

The California Independent System Operator Corporation issued a statewide Flex Alert from 5 p.m. to 9 p.m. Tuesday and Wednesday.

Customers are asked to turn off unnecessary lights, avoid using major appliances, and set air conditioners to 78 degrees or higher.

The ISO said the high temperatures, along with reduced electricity imports, tight natural gas supplies, and high wildfire risk led to the Flex Alert demand.

All possible resources will be available to serve the demand but conservation is needed to avoid rotating power outage, ISO officials said.

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Monday

12/08/2025

Partly Cloudy

50° / 40°

2%

Tuesday

12/09/2025

AM Fog/PM Sun

50° / 41°

10%

Wednesday

12/10/2025

AM Fog/PM Sun

51° / 42°

8%

Thursday

12/11/2025

Sunny

57° / 42°

5%

Friday

12/12/2025

Sunny

60° / 44°

6%

Saturday

12/13/2025

Partly Cloudy

61° / 44°

4%

Sunday

12/14/2025

Mostly Sunny

59° / 44°

4%

Monday

12/15/2025

Mostly Sunny

59° / 44°

4%