Flex Alert California: Tracker shows strain on power grid amid Bay Area heatwave


SAN FRANCISCO (KGO) — As the Bay Area reached the peak of its heat wave on Tuesday, Cal ISO issued a Flex Alert, asking Californians to conserve energy to avoid overloading the grid.

RELATED: The Best Ways to Save Power During a Flex Alert

Cal ISO, or California Independent System Operator, oversees the state’s electrical grid and infrastructure. In the hot afternoon, when most people use air conditioners and high-energy appliances, power consumption is highest, putting the greatest strain on California’s infrastructure.

The agency has created a real-time tracker that shows how close we are to this tipping point.

The capacity available to the state is approximately 51,000 megawatts. On Tuesday, we expect a peak around 52,079.

RELATED: Bay Area Heat Wave: 1 City Could Hit 118 Degrees Today

At 3 p.m., demand was about 50,000 megawatts. The number is expected to continue to climb as temperatures warm.

A screenshot shows demand versus overall power grid capacity as of 3 p.m. on September 6, 2022.

A screenshot shows demand versus overall power grid capacity as of 3 p.m. on September 6, 2022.

See how current demand compares to our maximum capacity by checking Cal ISO’s tracker.

If demand on the grid is expected to exceed capacity, the state sometimes triggers blackouts to save energy, as they did in late summer 2020.

It’s supposed to stay warm through Friday.

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Flex Alert California: Tracker shows strain on power grid amid Bay Area heatwave

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