Report: Utility equipment sparked fatal 2018 California fire

LOS ANGELES — A 2018 wildfire that killed three people and destroyed 1,600 homes was sparked by Southern California Edison equipment, according to a report by investigators released this week as the utility said it was looking into whether its power lines may have caused a huge blaze still smoldering Friday south of Los Angeles.

A redacted version of the Woolsey Fire investigation report obtained by the Ventura County Star concludes Edison equipment associated with an electrical circuit was the cause of the blaze two years ago northwest of Los Angeles.

Edison said in October 2019 that its equipment was likely the cause, and the report further supports that claim.

Under strong winds, a guy wire on a steel pole arced and connected with an energized conductor, causing “heated material” to fall on the vegetation down below, the documents state.

A “communication line” was also hooked up to that steel pole, and it became energized by the incident. A second fire was reported about a quarter of a mile away underneath the communication line, according to the documents.

The Star’s reporting on Thursday came as Edison was investigating whether its equipment caused the Silverado Fire that broke out earlier this week in hills near Irvine. According to Edison’s report to utility regulators, a “lashing wire” that ties a telecommunications line to a supporting cable may have come into contact with a separate 12,000-volt conductor line above it.

The Silverado Fire and another blaze just to the north, the Blue Ridge Fire, spurred the evacuation of 130,000 people in Orange County. All evacuation orders were lifted Thursday and firefighters were making significant progress against the twin blazes. Two firefighters suffered serious burns and at least 17 buildings were damaged or destroyed.

The release of the full investigation report into the Woolsey Fire has been delayed by a criminal investigation by the California Attorney General’s Office.

However, Los Angeles County Superior Court Judge William Highberger said the criminal probe no longer outweighed the public’s right to know what happened.