Out-of-service Edison tower sparked 2025 Eaton Fire that killed 19 near Los Angeles, 18-month probe concludes
An official investigation found an out-of-service Southern California Edison transmission tower sparked the deadly January 2025 Eaton Fire near Pasadena, confirming the utility's suspected role 18 months after the blaze killed 19 people and destroyed thousands of homes.
The ignition source confirmed
The Eaton Fire, which tore through the San Gabriel Mountains and foothill communities north of Los Angeles in January 2025, was started by an out-of-service Southern California Edison transmission tower. A final investigation report released on Tuesday, August 4, by the California Department of Forestry and Fire Protection (Cal Fire) and the Los Angeles County Fire Department concluded that two rapid-succession electrical arcing events on the idle SCE tower dropped burning material onto a dry receptive fuel bed.
The fuel bed ignited approximately 12 seconds after the material was seen falling, investigators wrote. Extreme weather conditions (high temperatures, low humidity, and powerful winds) then drove the fire into a conflagration that engulfed Altadena, Pasadena, Sierra Madre, La Canada Flintridge, and the San Gabriel Mountains. The fire was fully contained 24 days later, on January 31, 2025.
- Two electrical arcing events occur in quick succession on an out-of-service SCE tower, dropping burning material.
- The dry receptive fuel bed ignites approximately 12 seconds after the burning material is seen falling.
- Strong winds rapidly spread the fire into a conflagration, engulfing Altadena, Pasadena, and surrounding areas.
- The Eaton Fire is fully contained 24 days later.
- The final investigation report by Cal Fire and LA County Fire is released after 18 months, confirming the cause.
The human and structural toll
Nineteen people died in the Eaton Fire. More than 9,400 homes and businesses were destroyed or damaged, according to the report. The fire scorched more than 14,000 acres (57 square kilometers). Eighteen of the 19 people who died lived in west Altadena.
We have taken our potential role in the start of this fire seriously from the very beginning.
The utility's spokesperson, Kathleen Dunleavy, said SCE had previously acknowledged it was likely its equipment was associated with the ignition. SCE spokesperson David Eisenhauer confirmed the utility had received the county fire report and was reviewing it.
- Eaton Fire (deaths)
- 19
- Palisades Fire (deaths)
- 12
The parallel Palisades Fire and an unresolved arson case
At the same time the Eaton Fire was burning, the Palisades Fire was raging at the western edge of Los Angeles. That fire killed 12 people and destroyed more than 6,800 structures. Jonathan Rinderknecht, 29, was charged with arson in connection with the Palisades Fire; prosecutors alleged he started a fire on New Year's Day 2025 that was initially extinguished but smoldered underground and reignited on January 7 in the fierce winds. His federal trial ended in a mistrial in late June 2026 after the jury deadlocked, with ten of the twelve jurors favouring acquittal. Prosecutors said they would retry the case, and Judge Anne Hwang set a new trial for 19 October, ordering Rinderknecht held in custody until then.
- Eaton Fire (structures)
- 9400
- Palisades Fire (structures)
- 6800
Legal and financial exposure
Federal prosecutors in Los Angeles sued SoCal Edison last fall, alleging the company's negligence caused the Eaton Fire and another blaze, and seeking to recover tens of millions of dollars in damage to thousands of acres of Angeles National Forest land. The utility has also been sued by hundreds of residents impacted by the fire. Separately, SCE opened a compensation fund for survivors last October and says it has paid out more than $314 million to victims so far.
SoCal Edison has filed its own claims in litigation earlier this year, arguing that Los Angeles county agencies failed to send timely evacuation warnings to residents in east and west Altadena. The utility also claimed that water agencies, including Pasadena Water and Power, did not provide enough water as the fire spread, leaving firefighters with limited resources. Los Angeles county declined to comment on those filings.
What was lost
Among the thousands of structures burned to the ground were a number of historic buildings used in film and television production. The mansion seen on the comedy series Hacks, a 1915 Spanish Colonial Revival, was destroyed, with only its facade still standing. The Altadena Town & Country Club, which appeared in Mad Men, Starsky & Hutch, and The Wonder Years, was lost. The Eliot Arts Magnet Academy School, featured in Rob Zombie's Halloween, and the amphitheater from American Pie 2 and Ghost Whisperer were also destroyed.
