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Los Angeles CNN  — 

The power outages that have affected much of Northern California this week have cost San Jose alone at least half a million dollars, the city said Thursday, giving one of the first cost estimates of the massive power shutoffs by utility Pacific Gas & Electric.

Pacific Gas & Electric intentionally cut power to almost 800,000 customers in Northern California on Wednesday to prevent wildfires caused by high winds downing live power equipment – a process the utility had warned they’d be more aggressive about this year. While the company has since restored power for many affected areas, about 84,000 remain without electricity.

“This is not … a climate change story as much as a story about greed and mismanagement over the course of decades,” Newsom said Thursday. “Neglect, a desire to advance not public safety but profits.”

Students walk back into  class after a recess at a school in San Jose, California. They relied on sunlight after a Pacific Gas & Electric power shutdown turned out the lights.

The same winds will affect Southern California, too

Meanwhile, the same powerful winds are moving into Southern California, where a local utility company has started turning off the lights for thousands of people. Southern California Edison cut power to almost 24,000 customers as winds picked up in the region Thursday.

“The highest we’ve seen so far is 64 miles per hour in Warm Springs in the mountains of LA County,” said Keily Delerme, a meteorologist for the National Weather Service. “The most concerning thing is the combination of the winds and dry conditions.”

Some school districts canceled classes Thursday and Friday.

Police officers patrol a street during a power outage in Oakland, California.

More than a quarter million still without power

In Northern California, the power is trickling back on.

More than half of the customers affected had power back by end of Thursday and only about 84,000 customers remained without power on Friday, PG&E said.

The financial impact of the shutoff has been devastating.

Mayor Sam Liccardo said they expect some compensation from PG&E for the public cost.

Tod Pickett, who operates a sports memorabilia shop in Placerville, estimated he’s lost thousands of dollars.

“When the wind blows we have to turn the power off,” Pickett said. “It’s crazy … people are losing food, people are losing revenue for not being able to work.”

Critics say PG&E is getting away with inconveniencing its customers and costing businesses instead of upgrading its infrastructure to prevent fires.

Improved weather conditions

But the end of the misery may be near in Northern California.

Weather conditions are getting better, and the utility said it’ll start its safety inspections and repairs in some areas, a first step to restoring power. The company said while it has about 6,300 personnel ready to start inspections, it could take several days to restore power to everyone.

The power shutoff could last days, officials have said. The PG&E blackout region stretches from south of San Jose to areas north of Eureka.

Ultimately, if the power is off for two days, it could cost up to $2.6 billion, according to Michael Wara, the director of the Climate and Energy Policy Program at Stanford University’s Woods Institute.

“This is very disruptive to people’s lives and businesses to not have electric power,” Wara told CNN. “An economy as large as California’s, when you black out a significant fraction of the state, there are going to be large economic impacts.”

CNN’s Paul Vercammen contributed to this report