SK On passes large-scale fire test, bolstering ESS safety credentials
SK On, the battery manufacturing unit of SK Group, passed a major fire safety test for its energy storage systems (ESS), clearing a key hurdle as the company seeks to expand in the global market for grid-scale energy storage. The company said Wednesday that its ESS products met evaluation criteria under UL 9540A, a North American standard used to assess how thermal runaway in batteries can spread…
SK On, the battery manufacturing unit of SK Group, recently passed a significant fire safety test for its energy storage systems (ESS). This accomplishment comes as the company strives to increase its presence in the global market for grid-scale energy storage. SK On announced on Wednesday that its ESS products met the evaluation criteria under UL 9540A, a North American standard utilized to determine how thermal runaway in batteries can spread heat and fire to adjacent equipment.
The extensive fire test mimicked real-world conditions found in an energy storage system fire, assessing whether flames or excessive heat spread to nearby battery containers. Recent tightening of requirements in March aimed to establish more precise criteria for evaluating fire propagation. During the test, battery cells in adjacent containers did not encounter thermal runaway due to heat originating from the burning container, and temperatures within those containers remained within the evaluation limits, according to SK On.
The company credited the successful outcome to a system design that releases heat gradually over an extended period, mitigating sudden temperature increases.
Written by urgent.news from The Korea Times's reporting — not their text. Machine-written — may contain errors; check the original before relying on it.
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