Fire breaks out at Mount Signal One solar plant in California

What happened

A fire broke out at the Mount Signal One Solar Plant, which sits right off Highway 98 west of Calexico in Imperial County, California. The Imperial County Fire Department said the fire sparked at around 7 p.m. on a Wednesday. Firefighters were battling the fire when the report was published on 3 September 2026. No information on the extent of the damage had been released. The cause of the fire remains under investigation. The report does not state the capacity of the plant, the equipment involved, the operator or the owner, and it does not say whether anyone was injured or evacuated.

Contributing factors

Not reported. The cause of the fire remains under investigation.

Lessons learned

1. Operators of solar sites should have a documented fire response plan agreed in advance with the local fire department, including site access, isolation points and water supply.
2. Fires at remote or roadside solar plants can take considerable firefighting effort, so emergency contact details and site maps should be kept current for responders.
3. Early public reporting of a fire's cause and damage is limited while investigations are open, so operators should prepare clear, factual statements for stakeholders as soon as a fire is detected.

More lessons on fire suppression and firefighting, detection and monitoring, from every incident on the register.

Source

kyma.com