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Battery storageUnited StatesEIR-0190

Battery wall enters thermal runaway after shed fire in Visalia

2026Published 7 Sept 2026Responsible editor: Chief Editor

SignificantThermal / fireProvisional
Estimated damageEstimated by the register's adjusterHow? Know the real figure?
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out of service for about •• daysShown in the record →Full estimate
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Where
Shed behind a home in Visalia, California
What
Shed fire led to battery energy storage system entering thermal runaway
Response
Visalia Fire Department extinguished fire then managed hazard
Outcome
Shelter in place order lifted and roads reopened by Wednesday evening

What happened

A shed fire behind a home in Visalia, California, was extinguished by the Visalia Fire Department on a Wednesday afternoon. After the flames were out, crews identified a battery energy storage system inside the shed that had entered thermal runaway, continuing to generate intense heat and potentially hazardous emissions. Officials issued a shelter in place order for nearby residents while managing the hazard. The order was lifted and roads reopened by Wednesday evening.

Lessons learned

  1. A residential battery energy storage system can enter thermal runaway after an external shed fire is put out, so responders must check for continued heat and emissions.
  2. Nearby residents may need a shelter in place order during battery thermal runaway to avoid hazardous emissions, even after the initial fire.

More lessons on emergency response and public communication, from every incident on the register.

Not yet known

  • Cause of the shed fire
  • Battery system model and age
  • Duration of thermal runaway
  • Cost of the response

This entry is updated when these are reported. Get an alert for the next one like it.

Source

msn.com

Other entries that name Visalia

Published 2026-09-07. Written from public reporting. Descriptive, not investigative. See the data accuracy disclaimer.

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