Hydrogen bus blaze in west France: seven buses lost, investigation underway

A fire broke out on Thursday, January 2, at the Optymo bus depot in Danjoutin, Territoire de Belfort (west of France) destroying seven hydrogen-powered buses. Firefighters contained the fire after several hours, and the risk of explosions has been ruled out. No injuries were reported, but nearby residents were temporarily confined due to air pollution concerns.

A total of 52 firefighters and 21 vehicles from various fire stations were deployed to the scene. The national police were also present to carry out initial investigations. A local prosecutor has opened an investigation into the cause of the fire. Each hydrogen bus, made by Van Hool, is valued at approximately €700,000.

Fuel cell buses went on fire in Danjoutin

The cause of the fire is still under investigation, but there is no indication that a technical failure of the buses caused the incident. Belfort began using hydrogen-powered buses in 2023 and aims to have half of its fleet running on hydrogen by 2025.

The fire, as reported on local media, started around 2:20 AM, and smoke was visible from the A36 highway, several kilometers away. Seven hydrogen buses at the Optymo depot were completely destroyed by the flames.

Air quality tests were conducted, and the all-clear was given after confirming there was no immediate danger from fumes.

Environmental checks were carried out within a 500-meter radius of the fire, including in nearby commercial zones.

Public transport services resumed by 7:00 AM, with the Optymo bus network back to normal operation. Firefighting efforts were completed by late morning, but a monitoring team remains in place.