Mitsubishi Power battery spinoff completes large-scale fire testing of its HD5 energy storage platform
Prevalon Energy, a Mitsubishi Power spinoff known for its energy storage solutions, announced it has successfully completed large-scale fire testing (LSFT) of its HD5 energy storage enclosure — demonstrating fire containment under “extreme” conditions.
The test, conducted at a certified facility in accordance with CSA TS-800, simulated a thermal runaway event in a fully functional HD5 unit. Four enclosures were configured in a standard back-to-back, side-to-side arrangement. The initiating unit was subjected to aggressive conditions to ensure full thermal propagation. Results confirmed that the fire was fully contained within the initiating unit, with no impact on adjacent enclosures and all battery modules remaining below critical thermal thresholds.
“Ensuring the safety and reliability of our energy storage systems is paramount,” said Alejandro Schnakofsky, Chief Technical Officer at Prevalon Energy. “The successful completion of this rigorous testing validates our design approach and provides our customers with confidence in the robustness of our solutions.”
The HD5 Platform includes integrated fire mitigation technologies—thermal barriers and strategic component layout—designed to isolate and contain thermal events. These systems align with the latest UL and NFPA safety standards, Prevalon Energy claims.
“Safety and reliability are critical for energy storage,” said Tom Cornell, President and CEO of Prevalon Energy. “The completion of this Large-Scale Fire Test is a true testament to the dedication of our team in delivering not only cutting-edge technology but also peace of mind to our customers.”
Prevalon is also tackling another key challenge: acoustics. The company is developing low-noise solutions to meet strict community sound regulations.
In February 2024, Mitsubishi Power rebranded its battery energy storage solutions (BESS) business into a standalone and legally separated company, Prevalon. Prevalon brings experience from the BESS business at Mitsubishi Power – over 30 projects, and three gigawatt hours (GWh) of utility-scale battery energy storage systems (BESS) deployed globally. Mitsubishi Power said Prevalon will operate “with the agility of a startup.”
Prevalon Energy now boasts a pipeline of more than 30 projects, encompassing 4+ GWh of energy storage. In May 2024, the first of three Origis Energy solar + storage projects came online in Mississippi, marking a significant milestone for Prevalon, which supplied a 50 MW BESS for Golden Triangle II.
Originally published in Factor This Power Engineering.
