ISO

Joe Moore / Valley Public Radio

People use more energy when it’s hot, and California’s power grid operator has issued a Flex Alert because of the current heat wave.

Cal-ISO is the state’s Independent System Operator. When the forecast for demand gets close to the state’s power generating capacity, the operator calls a Flex Alert. Stephanie McCorkle with Cal-ISO says it’s most important to conserve during the peak usage hours between 11:00 a.m. and 6:00 p.m.

"Electricity is not something you can bottle up and store on a shelf. It is basically consumed the instant it is produced.”