The toughest time will be from 2 p.m. to 6 p.m., according to the agency.
The forecast peak demand is for 46,252 megawatts around 5 p.m., which would top the record 44,360 set July 21. Cal-ISO said a Stage 1 alert is possible today.
With a Stage 1 emergency, consumers are urged to reduce their use of electricity voluntarily to avoid severe conditions. A Stage 2 emergency results in voluntary interruption of service to select customers. Under a Stage 3 alert, consumers are advised that involuntary interruptions of service are in effect until the emergency passes.
The mercury is expected to top the century mark in a number of Southland communities Monday. The National Weather Service forecast highs of 105 in the Antelope Valley, 104 in the San Fernando Valley and about 95 in the San Gabriel Valley.
A cooling trend is expected starting Tuesday, gaining strength on Wednesday.
To reduce electricity consumption, Cal-ISO advises Californians to:
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