Battery units ignite at Townsite Solar and Storage in Boulder City, Nevada

A fire broke out in a battery storage unit at the Townsite Solar and Storage facility in Boulder City, Nevada, operated and owned by Arevon Energy, with battery systems supplied by Tesla and the plant built by EPC contractor Rosendin. Fire crews arrived within minutes and confirmed one battery unit was fully involved in flames. During the response a second, adjacent battery unit also ignited. Both units continued to burn and smoulder for approximately six hours. A multi-agency response was mounted, including local and neighbouring fire departments and the regional transportation authority, which closed a nearby stretch of highway as a precaution. No injuries were reported and officials stated there was no threat to the public. Fire crews eventually handed the site back to site personnel to continue monitoring the smouldering units. The battery system was reported to be roughly 3.8 years old at the time of the incident.

Not reported in available sources; root cause had not been determined at the time of reporting.

1. Fire propagation between adjacent battery enclosures can occur even with spacing and containment measures in place, underlining the value of physical separation and monitoring systems that detect early thermal events in neighbouring units.
2. Multi-agency coordination, including transport authorities to manage nearby roads, is an important part of an effective emergency response plan for battery storage sites.
3. Extended burn and smoulder periods should be anticipated in battery fire response planning, with clear criteria agreed in advance for when fire services hand over monitoring responsibility to site operators.

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