Investigators determine Southern California Edison power lines sparked deadly 2017 wildfire


The 2017 Thomas Fire that killed two people and burned 281,893 acres in Ventura and Santa Barbara counties was caused by Southern California Edison power lines, investigators announced Wednesday.
The Ventura County Fire Department and California Department of Forestry and Fire Protection found during a 13-month investigation that the fire was sparked on Dec. 4, during high winds. When two power lines "came into contact with each other," it created an "electrical arc," the Ventura County Fire Department said in a statement. "The electrical arc deposited hot, burning, or molten material on the ground, in a receptive fuel bed, causing the fire. The common term for this situation is called 'line slap,' and the power line in question is owned by Southern California Edison."
The fire wiped out vegetation north of Montecito, and when heavy rains came through on Jan. 9, 2018, they triggered mudslides. At least 20 people were killed when the hillside came tumbling down on homes below. As a result of the finding, Southern California Edison is now on the hook for $1.3 billion in insurance claims filed by victims of the Thomas Fire, and $400 million in claims related to the mudslides, the Los Angeles Times reports.
Subscribe to The Week
Escape your echo chamber. Get the facts behind the news, plus analysis from multiple perspectives.

Sign up for The Week's Free Newsletters
From our morning news briefing to a weekly Good News Newsletter, get the best of The Week delivered directly to your inbox.
From our morning news briefing to a weekly Good News Newsletter, get the best of The Week delivered directly to your inbox.
A free daily email with the biggest news stories of the day – and the best features from TheWeek.com
Catherine Garcia has worked as a senior writer at The Week since 2014. Her writing and reporting have appeared in Entertainment Weekly, The New York Times, Wirecutter, NBC News and "The Book of Jezebel," among others. She's a graduate of the University of Redlands and the Columbia University Graduate School of Journalism.
-
5 museum-grade cartoons about Trump's Smithsonian purge
Cartoons Artists take on institutional rebranding, exhibit interpretation, and more
-
Settling the West Bank: a death knell for a Palestine state?
In the Spotlight The reality on the ground is that the annexation of the West Bank is all but a done deal
-
Sudoku medium: August 23, 2025
The Week's daily medium sudoku puzzle
-
New York court tosses Trump's $500M fraud fine
Speed Read A divided appeals court threw out a hefty penalty against President Trump for fraudulently inflating his wealth
-
Trump said to seek government stake in Intel
Speed Read The president and Intel CEO Lip-Bu Tan reportedly discussed the proposal at a recent meeting
-
US to take 15% cut of AI chip sales to China
Speed Read Nvidia and AMD will pay the Trump administration 15% of their revenue from selling artificial intelligence chips to China
-
NFL gets ESPN stake in deal with Disney
Speed Read The deal gives the NFL a 10% stake in Disney's ESPN sports empire and gives ESPN ownership of NFL Network
-
Samsung to make Tesla chips in $16.5B deal
Speed Read Tesla has signed a deal to get its next-generation chips from Samsung
-
FCC greenlights $8B Paramount-Skydance merger
Speed Read The Federal Communications Commission will allow Paramount to merge with the Hollywood studio Skydance
-
Tesla reports plummeting profits
Speed Read The company may soon face more problems with the expiration of federal electric vehicle tax credits
-
Dollar faces historic slump as stocks hit new high
Speed Read While stocks have recovered post-Trump tariffs, the dollar has weakened more than 10% this year