Thermal Runaway

Thermal runaway describes an uncontrolled chain reaction inside a battery cell, where rising temperature releases more and more heat and the process reinforces itself. Without effective countermeasures, this can lead to smoke, fire, or in rare cases an explosion. A reliable BMS, along with cell chemistry with high thermal stability (like sodium-ion) significantly reduces this risk.

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More on safety and reliability at PHENOGY

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Technology & Safety

Battery Fire Safety

Battery fire safety encompasses all structural, technical, and organizational measures that minimize a battery storage system's fire risk and limit damage if…

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Fire Protection Concept
Technology & Safety

Energy Density

Energy density indicates how much energy a battery can store relative to its weight (gravimetric, in Wh/kg) or its volume (volumetric, in Wh/l).

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Gravimetric Energy Density, Volumetric Energy Density
Technology & Safety

Fire Safety Requirements (NFPA 855)

In the US, fire safety for battery storage systems is governed primarily by the NFPA 855 fire code and UL 9540A testing standard, which set requirements for…

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NFPA 855, Fire Code Compliance

Further reading

Grid Strain, Increasing Natural Disasters, and Regulatory Uncertainty: The Urgent Need for Local Resilience
Snow plough clearing a city street during a winter storm
Article
Grid & Resilience
Energy Market & Policy
03.07.2025

Grid Strain, Increasing Natural Disasters, and Regulatory Uncertainty: The Urgent Need for Local Resilience

The United States stands on the verge of a major transformation in its energy supply. While record growth in solar installations and electric vehicle adoption creates optimism, grid congestion, slow permitting processes, and uncertainty in the regulatory landscape threaten to stall this progress.

Suzanne Dickerson
Managing Director North America, PHENOGY Inc.
Scaling Smarter: How PHENOGY Is Moving into Series Production
Representatives of PHENOGY and HDAT at the announcement of their strategic partnership for battery storage
Article
Energy Market & Policy
Company & Team
12.10.2026

Scaling Smarter: How PHENOGY Is Moving into Series Production

Together with our partner HDAT, we are bringing battery energy storage systems to market.

Marcel Kloppenburg
Chief Marketing Officer