SolaX ORI Energy Storage System Completes Large-Scale Fire Test Under Extreme Conditions

Energy storage safety is increasingly being assessed not by individual component performance alone, but by how a complete system behaves under severe and credible fault conditions.

On 21st  May 2026, SolaX completed a system-level extreme fire test on its ORI large-scale energy storage system, witnessed by UL Solutions. The test was designed to reflect real energy storage site layout and to evaluate the system's ability to limit fire propagation, isolate risk and maintain key system functions during an extreme fire scenario.

The test configuration consisted of 4sets of  DC battery containers and 1set of PCS&Transformer station, creating a multi-unit layout closer to a real large-scale energy storage installation. Unlike single-container or component-level tests, this system-level setup assessed how battery containers, power conversion equipment, communication systems, cabling and structural protection measures perform together under abnormal conditions.

For energy storage owners, developers and investors, this distinction matters. A fire event is not only a product safety issue. It can also affect plant availability, insurance assessment, asset protection, emergency response planning and long-term project bankability. As deployment of large-scale energy storage accelerates across global markets, system-level validation is becoming an increasingly important reference point for project stakeholders.

The test covered the fire development process following the initiating event, including fire growth, development and extinguishment. It focused on several key safety indicators commonly reviewed in large-scale energy storage fire propagation assessments, including thermal runaway propagation, temperature rise in adjacent containers, structural integrity, cable fire risk, BMS communication continuity and fire alarm system response.

According to the test observations, the ORI system achieved system-level non-propagation, with no observed fire spread to adjacent battery containers or to the AC/PCS container. Key observations and measurement points are summarized below.

The results indicate that the ORI system's compartmentalization design, thermal isolation strategy, cable protection and system-level safety architecture were effective in limiting risk under the tested conditions.

"Energy storage safety must be proven at system level, not only at component level," said Andrey Yang, Head of Global Large-Scale Energy Storage Sales of SolaX. "For customers, the real question is how the system behaves when exposed to extreme conditions. This test gives project stakeholders a clearer view of ORI's fire isolation capability, structural resilience and system-level safety performance."

The test involved full-scale equipment, a dedicated test site, monitoring systems and third-party witnessing, providing a high level of scenario realism and technical credibility. For SolaX, the exercise forms part of its broader approach to integrating safety validation into product development, system design and long-term operational support.

As large-scale energy storage becomes a critical part of renewable energy infrastructure, customers are placing greater emphasis on fire safety, operational resilience and full lifecycle asset value. SolaX said it will continue to advance the ORI energy storage platform through rigorous testing, system-level engineering and continuous product improvement.