Ageing battery storage fire destroys building at Angang-eup solar site
EIR-0104Provisional entry. Published from first reports and rechecked automatically as more sources appear. No further update is scheduled; the entry stays provisional until new information is published.
A fire broke out at a battery energy storage system co-located with a solar power facility in Angang-eup, Gyeongju-si, Gyeongsangbuk-do, South Korea, destroying eight cabinet-type lithium-ion battery units, manufactured by LG Energy Solution, and the lightweight steel-framed building housing them. The system had been in operation for approximately eight years. Before visible smoke was reported, the system automatically sent an abnormality alert to the remote device manager's mobile phone; by the time the manager reached the site, smoke was already visible. Fire crews took around three and a half hours to extinguish the blaze. No injuries were reported. Investigators stated the fire spread from inside the battery enclosure outward, ruling out an external ignition source. The precise technical cause remains under investigation, though experts commenting on the case suggested age-related battery degradation as a possible contributing factor rather than an original manufacturing defect, since fires linked to cell manufacturing faults typically occur soon after commissioning rather than after years of operation.
The system had operated for approximately eight years since installation, and experts suggested age-related battery degradation as a possible factor, though this was not officially confirmed at the time of reporting. An automated fault-alert system notified a remote manager but did not appear to trigger any local suppression or emergency shutdown before the fire had already progressed to visible smoke.
- Remote fault-alert systems that only notify a manager by phone may not provide enough time to prevent escalation; automated alerts should be paired with immediate on-site or remote emergency isolation and suppression triggers.
- Ageing battery systems approaching or exceeding original design life may need enhanced degradation monitoring and more frequent inspection regimes, since normal end-of-life behaviour should be a graceful shutdown rather than a fire.
- Fire propagation barriers between battery units should be prioritised in retrofits of older installations to prevent a single-unit fault from destroying an entire array and its housing.
- Housing battery enclosures in combustible lightweight-panel structures increases the risk of total structural loss once a battery fire begins, so fire-rated enclosures or greater separation from combustible building materials should be considered for existing sites.
Published 2026-09-07. Written from public reporting. Descriptive, not investigative. See the data accuracy disclaimer.