Wärtsilä raises fire safety bar with Quantum3

Wärtsilä has completed three major fire safety and explosion tests for its Quantum3 battery energy storage system. The program included UL 9540A unit-level testing, Large Scale Fire Testing, and testing of the company’s Active Ignition Mitigation System (AIMS). The results strengthen Wärtsilä’s position as a leader in energy storage safety.

The tests simulated worst-case fire and explosion scenarios. They confirmed Quantum3’s ability to contain thermal runaway, prevent fire spread, and reduce risks linked to flammable gas build-up. CSA Group planned and witnessed all tests, providing third-party verification.

In UL 9540A testing, Quantum3 met all performance requirements. A thermal runaway event did not spread beyond a single cell, and no external flames or explosion hazards occurred.

In Large Scale Fire Testing, a fire burned inside a Quantum3 unit for more than 22 hours under CSA/ANSI C800:25 conditions. The fire remained contained, and no adjacent units were affected, even without suppression systems.

Wärtsilä also validated its AIMS technology. The system ignites flammable gases early in a thermal event, preventing uncontrolled deflagration and maintaining enclosure integrity.

“CSA Group was pleased to support Wärtsilä’s fire safety testing program,” said Dana Parmenter, Commercial Vice President, Industry, CSA Group.

Quantum3 is the newest addition to Wärtsilä’s Quantum portfolio. It offers a fully integrated AC-block design with advanced safety, cybersecurity, energy density, and sustainability features. Its fire-safety performance exceeds current global standards.

“These results reflect years of engineering innovation and safety-first design,” said Mishaal SyedNaveed, Product Manager – Fire Protection at Wärtsilä Energy Storage.

Wärtsilä plans to continue working with first responders, customers, and regulators to advance fire-safety standards as global battery storage deployment accelerates.

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