Power outage averted on Sunday, so California survives rolling blackout


The state’s power-grid managers breathed a sigh of relief Sunday night as extreme temperatures threatened but did not push California’s energy demand during its supply, but carefully watched the forecast for winds in the following week, causing more energy May be closed.

For the second day in a row, when scorching temperatures reached record-breaking peaks, the California Independent System Operator was calling for Californians to conserve energy to protect the power grid as it faced supply shortages. Officials said Sunday afternoon that they were hoping that 2.3 million customers could lose power, which begins at 7 pm if conservation efforts were not enough.

Shortly before 6pm on Sunday evening, the system announced a Stage 2 emergency for the second day in a row when capacity on the transmission line from Oregon reduced heat to 900 MW and additional generation to 260 MW.

But just after 8:30 p.m., a social-media post said the emergency was lifted “thanks to the patronage of California!”

“Sunday is probably ready for the most challenging day of the year,” Eric Schmidt, vice president of California’s Independent Systems Operator, said in a prior news conference. “We have very severe conditions in the system and an estimated height and rise of about 49,000 MW on the system.

“Our highest load capacity is around 47,100 MW, so I think it’s fair to say that without really significant protection and the help of customers today, we would have some roll outs.”

By evening, Shmit credited the efforts of residents and visitors. He said in a statement, “Consumer action to conserve energy tonight was instrumental in helping us flow electricity across the state.” “We recognize the sacrifices that consumers make in conserving energy during these very hot conditions, and appreciate their contribution.”

The flex alert was scheduled from 3 to 9 pm on Sunday and Monday to reduce stress on the power grid. This year, millions were expected to turn on their thermostats to avoid a second substantial wave of heat, affecting the state’s energy supply. If they are ordered, a rolling blackout is likely between 5 and 9 pm

If ordered to blackout today, will you lose power? Here’s how PG&E customers on the list can find out

On Saturday, the system operator declared a Stage 2 emergency after nearly 1,600 MW went offline due to a fire in Southern California. This capacity, enough to power about 1.2 million homes, went offline on Sunday morning. Officials said they regained about half of the lost generation on Saturday afternoon.

A large portion of the capacity was also lost which came from large-scale solar farms in the desert that connect to the Southern California grid. Late Saturday evening, Creek Fire in Madera County forced the closure of the 915-MW hydroelectric station, further disrupting grid resources. CAL’s director of realtime operations John Phipps said Sunday that the capacity “could change in an instant.”

Although power lines affected hundreds of miles from the Bay Area, Phipps said solar and hydropower constraints in Southern California may still affect customers here.

“Energy in a plant can feed homes at the other end of the state,” Phipps said. “If energy is lost somewhere, it can affect customers throughout California.”

This is not the first time in the summer of this year that Cal ISO has warned California residents to blackout; In August, a heat wave warned of four days, but conservation efforts prevented the outage. Regulators have also warned that a public safety power shutoff could occur later this week, as weather forecasts also note high winds, which, combined with heat, pose a serious threat to start new fires Can.