PG&E plans a 10-year effort to put power lines underground to reduce fire risk.

Pacific Gas & Electric introduced an bold plan on Wednesday to put 10,000 miles of its power lines underground to forestall the type of wildfires that led the utility to chapter courtroom in 2019.

The challenge, which might contain about 10 p.c of the lines at the moment above floor, might price tens of billions of dollars to perform.

The power firm, California’s largest electrical energy supplier, mentioned the work would purpose first at areas most weak to wildfires and increase all through its service territory, which incorporates 5.5 million electrical clients in Northern and Central California.

PG&E’s announcement adopted a preliminary report during the last week to state regulators that its gear could have triggered the Dixie Fire, one of many state’s largest blazes, which has burned at the very least 85,000 acres. The fire is spreading in Butte County, the place the utility’s gear triggered a fire that destroyed the city of Paradise and killed 85 folks in 2018.

Although utilities throughout the nation have more and more moved their power lines underground, none have proposed a challenge on the dimensions of PG&E’s plan.

“We need you to know that we are working night and day to solve this incredible problem,” Patricia Ok. Poppe, chief govt of PG&E Corporation, the utility’s father or mother.

Mark Toney, govt director of the Utility Reform Network, which represents shoppers earlier than the California Public Utilities Commission, mentioned that decreasing wildfire threat was a precedence however that the utility should develop a plan that might fund the large challenge with out overburdening ratepayers, who already are paying monumental prices. The challenge might price $40 billion primarily based on about $four million per mile estimated for underground power line proposals that PG&E has submitted to state regulators, Mr. Toney mentioned.

“We’d be living in a world where only the wealthy could afford electricity,” Mr. Toney mentioned. “PG&E needs a plan to reduce the most risk possible at the least cost possible to ratepayers.”

On a name with reporters, Ms. Poppe mentioned the utility hoped to get the per-mile expense down sufficiently to put the general price at $15 billion to $20 billion. “We can’t put a price on the risk reduction and safety,” she mentioned.

The firm mentioned that it might set up about a quarter-mile of power lines underground a day however that it aimed to improve that to 1,000 miles or extra a yr to forestall fires.

PG&E has been a focus of the influence of local weather change since a collection of record-setting wildfires started burning by means of Northern California in 2017, a number of of them brought on by the utility’s gear.

The utility has taken a number of steps to forestall fires, together with putting in gear to monitor climate circumstances and to permit lines to be shut off remotely. But the effectiveness of these efforts has more and more come below query, notably after the corporate reported that its gear may need triggered the Dixie Fire. The wildfire season has months to go earlier than its peak.

State regulators and the courts have fined the utility billions of dollars for failing to keep its gear and inflicting fires. The firm, which emerged from chapter final yr after amassing $30 billion in wildfire legal responsibility, pleaded responsible to 84 counts of involuntary manslaughter associated to the Paradise fire.

It was the second felony conviction for the utility. In 2016, PG&E was discovered responsible of federal fees associated to a fuel pipeline explosion six years earlier within the San Francisco suburb of San Bruno that killed eight folks.