BESS Fire Safety

For us, fire safety isn't an afterthought—it's the very foundation

Our energy storage systems are engineered with safety at their core, setting new benchmarks for the industry. From rigorous testing to proactive community engagement, we lead with responsibility, innovation, and transparency.

Built-in safety: product features that set us apart

Quantum3 architecture

Our high-density AC block system includes string-level power conversion and rack-level control, enabling precise thermal and electrical management.

Fire and explosion mitigation

Each unit is equipped with our proprietary Active Ignition Mitigation System (AIMS) (i.e., sparker system) that works in conjunction with door-mounted deflagration panels.

Cybersecure battery management

Wärtsilä's proprietary Battery Management System (BMS), Power Distribution Units (PDUs), and PCS ensure safe operation through real-time diagnostics, cell balancing, fault isolation, and much more.

Low-GWP cooling systems

Our sustainable thermal design minimises environmental impact while maintaining optimal operating temperatures.

Anomaly detection

GEMS Pulse provides built-in analytics to detect early signs of thermal anomalies, such as cell temperature deviations, allowing proactive intervention.

24/7 monitoring

Around-the-clock remote diagnostics and rapid-response protocols ensure issues are identified and addressed before escalation.

Rigorous testing and validation

A high-energy dense BESS can burn for hours if ignited, which is why containment is critical. Our latest tests align with the published C800:2025 standard, setting new safety benchmarks for energy storage systems in 2026.

Exceeds UL 9540A standards

Wärtsilä conducts large-scale fire testing that simulates worst-case scenarios, going beyond UL 9540A standards - demonstrating our strong commitment to safety.

Multiple large-scale fire tests (LSFTs)

We have completed four LSFTs across our Quantum product portfolio with each one demonstrating no unit-to-unit propagation under extreme conditions.

Explosion testing

To validate our integrated explosion control systems, we've conducted explosion testing using explosive gas mixtures - advancing safety standards and demonstrating the BESS's ability to mitigate deflagration during abnormal thermal events.

For us, fire safety isn't an afterthought—it's the very foundation

Built-in safety: product features that set us apart

Rigorous testing and validation

Exceeds UL 9540A standards

Wärtsilä conducts large-scale fire testing that simulates worst-case scenarios, going beyond UL 9540A standards - demonstrating our strong commitment to safety.

Wärtsilä conducts large-scale fire testing that simulates worst-case scenarios, going beyond UL 9540A standards - demonstrating our strong commitment to safety.

Multiple large-scale fire tests (LSFTs)

We have completed four LSFTs across our Quantum product portfolio with each one demonstrating no unit-to-unit propagation under extreme conditions.

We have completed four LSFTs across our Quantum product portfolio with each one demonstrating no unit-to-unit propagation under extreme conditions.

Explosion testing

To validate our integrated explosion control systems, we've conducted explosion testing using explosive gas mixtures - advancing safety standards and demonstrating the BESS's ability to mitigate deflagration during abnormal thermal events.

To validate our integrated explosion control systems, we've conducted explosion testing using explosive gas mixtures - advancing safety standards and demonstrating the BESS's ability to mitigate deflagration during abnormal thermal events.

Independent oversight

Testing is conducted with independent consultants, insurers, fire authorities, and customers, with a strong emphasis on transparency.

Testing is conducted with independent consultants, insurers, fire authorities, and customers, with a strong emphasis on transparency.