Even as the winds gusted dangerously just as forecasters predicted, California's biggest utility faced gripes and second-guessing Thursday for shutting off electricity to millions of people to prevent its equipment from sparking wildfires.
Gov. Gavin Newsom criticized Pacific Gas & Electric, and ordinary customers complained about the inconveniences caused by the unprecedented blackouts that began Wednesday, with many wondering: Has PG&E gone too far in its attempt to ward off another deadly fire season? And could the utility have been more targeted in deciding whose electricity was turned off and when?
PG&E, though, suggested it was already seeing the wisdom of its decision borne out. Gusts topping 75 mph (121 kph) raked the San Francisco Bay Area, and relatively small fires broke out around the state amid a bout of dry, windy weather.
"We have had some preliminary reports of damage to our lines. So we'll have to repair those damages before we can safely energize the line," spokesman Paul Doherty said.
Because of the dangerous weather in the forecast, PG&E cut power Wednesday to an estimated 2 million people in an area that spanned the San Francisco Bay Area, the wine country north of San Francisco, the agricultural Central Valley and the Sierra Nevada foothills. By Thursday evening, the weather had calmed and the number of customers in the dark was down to about 510,000.
Inspections and repairs were expected to resume at daybreak and power could be restored Friday to many more customers, Singh said.
PG&E cast the blackouts as a matter of public safety, aimed at preventing the kind of blazes that have killed scores of people over the past couple of years, destroyed thousands of homes, and run up tens of billions of dollars in claims that drove the company into bankruptcy.
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CEO Bill Johnson didn't respond to Newsom's criticisms but promised if future wind events require similar shutoffs, the utility will "do better" when it comes to communicating with customers. It's unacceptable that its websites crashed, maps were inconsistent and call centers were overloaded, Johnson said.
"We were not adequately prepared," he said.
The fire danger spread to Southern California on Thursday as raging winds moved down the state. A blaze threatened homes in the community of Fontana, and Southern California Edison shut off electricity to about 12,000 people just outside Los Angeles, with wider blackouts possible.
A blaze ripped through a trailer park in Calimesa, a city about 65 miles (104 kilometers) east of Los Angeles, destroying dozens of homes. The fire was started when trash being hauled caught fire and the driver dumped the load aside a road, according to Riverside County officials.
Winds gusting to 50 mph carried embers into dry grass and quickly spread to tightly clustered mobile homes, leading to "numerous medical emergencies," the fire department said.
Still, many of those affected by the outages, which could last as long as five days, were not so sure about the move.
Sergio Vergara, owner of Stinson Beach Market, situated on scenic Highway 1, on the Pacific Coast just north of San Francisco, operated the store with a propane generator so his customers could have coffee, milk, meat and frozen meals.
"I'm telling you as a plain human being, there is no wind, there is no heat," he said. "We never saw something like this where they just decide to shut off the power, but on the other side — preventing is a good thing, but it's creating a lot of frustration."
But in powered-down Oakland, Tianna Pasche said: "If it saves a life, I'm not going to complain about it."
For some residents, the lack of electricity is more than an inconvenience, it's life or death.
Seven Flags resident Darryl Blanton, 80, told NBC News he'd be going to bed afraid he might not wake up because he uses an electric-powered device to regulate his breathing while he's asleep.
"I've used that since 2003, and I can't sleep without that," Blanton said. "And it's bad for my health — I could have a heart attack because of not being able to sleep."
Faced with customer anger, PG&E put up barricades around its San Francisco headquarters. A customer threw eggs at a PG&E office in Oroville. And a PG&E truck was hit by a bullet, though authorities could not immediately say whether it was targeted.
Sumeet Singh, PG&E's vice president of community wildfire safety, urged people to be kind to workers out in the field, saying the employees and contractors "have families that live in your communities."
"Let's just ensure their safety as well, as they are doing this work in the interest of your safety," Singh said.
Gov. Gavin Newsom said PG&E should have been working on making its power system sturdier and more weatherproof. "They're in bankruptcy due to their terrible management going back decades," he said. "They've created these conditions. It was unnecessary."
"This is not from my perspective a climate change story so much as it is a story of greed and mismanagement over the course of decades," Newsom said later
Experts say the big shut-off will yield important lessons for the next time.
Deliberate blackouts are likely to become less disruptive as PG&E gets experience managing them and rebuilds sections of the grid so that outages can be more targeted, said Michael Wara, a researcher on energy and climate policy at Stanford University.
Grids are built and operators are trained to keep the power on at all times, so the company and its employees have little experience with intentionally turning the electricity off in response to rapidly changing weather, he said.
"That's a skill that has to be learned, and PG&E is learning it at a mass scale right now," Wara said.
After a June shut-off in the Sierra foothills, PG&E workers reported repairing numerous areas of wind damage, including power lines hit by tree branches.
"That was worth it," Wara said of the deliberate blackout. "That could have prevented a catastrophe."
Associated Press writers Terry Chea, Haven Daley, Janie Har, Daisy Nguyen, Olga R. Rodriguez and John Antczak in contributed to this story.