California’s power grid operator declared a stage 3 energy emergency alert Tuesday evening, warning that rotating power outages were "very possible" as a brutal heat wave walloping the state pushed electricity demand to its limits.
"Energy Emergency Alert 3 with rotating #power outages very possible. Please reduce your energy use," The California Independent System Operator (ISO) tweeted.
Several hours later, at 8 p.m., the ISO ended the alert which was initially scheduled to continue until 9 p.m.
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