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Cal ISO, or the California Independent System Operator, oversees the state's power grid and infrastructure. In the afternoon hours on hot days, when most people are running air conditioners and high-energy appliances, power use is highest, putting the most pressure on California's infrastructure.
The agency created a real-time tracker that shows how close we are to that tipping point.
The available capacity for the state is about 50,000 megawatts. On Thursday, we're forecasted to peak around 43,000.
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As of 1:20 p.m., demand was around 35,600 megawatts. That's up from 29,000 at 9 a.m. The number is expected to keep climbing as temperatures heat up.
See how current demand compares to our maximum capacity by viewing Cal ISO's tracker.
If demand on the grid if expected to exceed capacity, the state sometimes triggers rolling blackouts to conserve energy, as they did in the late summer of 2020.
It's supposed to stay hot through Friday, but Thursday is expected to be the hottest day of the week.
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