Small self-extinguishing fire at a solar-linked battery storage system, South Korea

In 2019, a fire occurred at a solar-integrated battery energy storage system in South Korea, around one year after commissioning. Reporting indicates the fire was small in scale and either self-extinguished or was extinguished on site without the attendance of the fire service. Local and national fire authorities stated they held no record of being notified, and no fire scene investigation, forensic examination or electrical safety inspection was carried out by the relevant technical agencies. Reporting indicates the site was not intended to be made publicly known. The event was nonetheless included by the national ministry overseeing energy storage safety in its count of battery storage fire incidents for the period, based on information obtained through a separate industry investigation committee rather than through emergency services reporting channels.

Sources stated the battery chemistry involved was lithium ion. No formal cause was established, as no fire scene investigation took place. Sources also linked the low likelihood of the event being detected externally to the isolated location of the facility and to the fire not being reported to emergency services.

1. Report all fires at battery storage sites to emergency services and technical safety agencies regardless of scale or outcome, so that national incident data remains consistent.
2. Treat self-extinguished or site-contained fires as investigable events, with a formal root cause examination and retention of the affected modules and data logs.
3. Base national and corporate incident statistics on independent forensic investigation where possible, and record clearly where an entry rests only on informal or committee-sourced confirmation.
4. Set internal reporting thresholds that do not depend on fire service attendance, so remote or lightly staffed sites capture minor thermal events.

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