Broken power lines caused deadly Maui wildfire, new report shows

A report has found that broken power lines caused the deadly August 2023 wildfire in Maui.

The wildfire on the Hawaiian Island killed 102 people and destroyed more than 2,200 structures, causing more than $5 billion in damages.

The nearly 300-page report released Wednesday comes from the U.S. Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF), which worked with local officials like the County of Maui Department of Fire and Public Safety to determine the cause.

The fire was initially blamed on the combination of high winds and dry weather. However, the investigation found that the widespread destruction was caused by a single fire that started by the "undetected re-energization of broken utility lines, which caused sparks that ignited unmaintained vegetation," Maui Fire Chief Bradford Ventura said during a press conference Wednesday.

The investigation found no definitive conclusion with how the ignition started, Ventura said, but noted that the report found the fire cause to be accidental.

"The origin of the fire was the overgrown vegetation at and surrounding utility pole 25 off of Lahainaluna Road," according to the report. "The cause of the fire was the re-energization of broken utility lines which caused the ejection of molten metallic material (sparks) to fall to the base of pole 25, igniting the unmaintained vegetation below."

The investigation also ruled out the possibility that there had been two separate fires. "This, in fact, was one fire," Ventura said.

The wildfire was the fifth deadliest in U.S. history and the worst natural disaster in Hawaii's history, according to the U.S. Fire Administration. It sparked several other investigations centered on police response and the response from state and Maui county agencies.

In the days before the Aug. 8 wildfire, the Hawaii Emergency Management Agency issued a red flag warning of "gusty winds and dry fuels" creating a risk of "extreme fire."

Fingers were pointed between the local agencies and companies connected to the fire. A report from state Attorney General Anne E. Lopez found that there is no evidence that Hawaiian Electric, Hawaii Emergency Management Agency, Maui Fire Department, Maui Police and others had developed plans to deal with such a fire risk.

A preliminary Maui Police Department report in February found that the understaffed police force grappled with communications and equipment issues that hadn't been anticipated. The police investigation didn't address the utility's potential culpability for the fires, the origin of the blazes or the fire crews' response.

The report found that police went without proper protective gear while juggling frantic traffic evacuations and that emergency dispatch for the island was overwhelmed by a call volume it was unable to handle. It also noted that suspended cables and downed electrical wires were strewn across roadways, cutting off what could have been critical routes for escape.

In August, Hawaii Gov. Josh Green announced a historic $4.037 billion settlement to resolve claims arising from the tragedy. The settlement addresses roughly 450 lawsuits filed by individuals, businesses and insurance companies in both state and federal courts against seven defendants -- state of Hawaii, County of Maui, Hawaiian Electric, Kamehameha Schools, West Maui Land Co., Hawaiian Telcom and Spectrum/Charter Communications.

They say they "undertook significant efforts to find a resolution that addresses the needs and ensures the well-being of plaintiffs, all affected individuals, and their families," according to a press release from Green's office.