The new edition of the UL9540A fire safety standard for battery energy storage systems (BESS) “establishes a new precedent in the testing and certification ecosystem.”

With battery storage safety under increasing scrutiny, Wanxiang A123 Systems and Hithium have unveiled new products and large-scale fire testing (LSFT), respectively.

BESS Large-Scale Fire Testing (LSFT) has been adopted as part of best practice thinking on safety validation, with at least a dozen companies announcing tests and results and many more expected going forward. It becomes mandatory in the 2026 edition of NFPA 855.

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Battery storage products from prominent international providers Sungrow, Wärtsilä and Chint Power have undergone recent fire safety tests.

A proprietary explosion control system performed effectively in three recent safety tests conducted on Wärtsilä battery storage equipment.

Andrew Early and Ben Echeverria of EPC Burns & McDonnell offer their strategies for navigating the complexities of large-scale battery storage.

Energy storage system safety is being taken to new levels, as evidenced by the fire testing efforts of Chinese market players, writes Carrie Xiao.

Carrie Xiao’s exclusive reporting from SNEC 2025 continues with the latest in modular battery storage system design and approaches to fire safety.

A trio of major players in the battery storage system integration space have unveiled recent Large-Scale Fire Testing (LSFT) results.