Trina Storage has completed large-scale fire testing of its Elementa 2 Pro energy storage system, evaluating the system’s enclosure integrity and fire isolation and the reliability of critical systems under extreme fire conditions.
The test was conducted in accordance with the latest editions of CSA/ANSI C800-2025, NFPA 855-2026, and UL 9540A (November 2025), and went beyond standard criteria by reducing the spacing between containers to just 10 centimeters, creating a more severe thermal challenge to assess system-level safety margins.
During testing, the initiation container experienced sustained flames exceeding 1300°C, simulating an extreme fire scenario. Cells in adjacent containers remained far below critical safety limits, with cell temperature in back-to-back containers below 43.9°C, that in side-by-side containers below 23.9°C and the cell temperature in face-to-face containers below 28.6°C.
These temperatures are well below the cell venting points, surpassing UL 9540A acceptance criteria and outperforming typical industry benchmarks. No thermal propagation occurred, demonstrating the effectiveness of the system’s multi-layered safety design, including enclosure structure, fire-resistant materials and thermal protection strategies.
Throughout the fire exposure, the fire alarm in the initiation container continued operating until power was lost, confirming the robustness of the communication system under extreme conditions.
Post test inspections showed that electrical cabinets in the initiation container remained intact, with internal separation maintained by multi-layer isolation. Adjacent containers remained structurally sound and fully functional. Fire protection systems in adjacent containers maintained 100% availability, module-level thermal management systems remained operational and cell charge/discharge performance was unaffected.