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What makes large scale batteries safe

Blog post
8/8/2025
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Utility-scale batteries are engineered to far higher safety standards, with robust systems in place to monitor, control, and minimise any fire risk. These are not consumer-grade devices scaled up. Instead, they are purpose-built infrastructure designed for safe, long-term operation.

Large-scale batteries are very different from the ones found in e-scooters or power banks. While those are smaller than a sandwich and lack advanced cooling or control systems, utility-scale batteries are housed in shipping container-sized units, cooled by industrial-grade systems, and monitored around the clock for safe and reliable operations. Batteries are already operating safely in extreme conditions around the world, reliably delivering energy when it’s needed most. And momentum is only growing. The Bloomberg NEF in their 1H 2025 Storage Market Outlook predicts global utility-scale battery capacity will reach 1,808 GW in 2035.

Large-scale batteries have advanced engineering and control systems designed for risk mitigation and resilience. They are designed with many layers of safety. From their thermal capacity that allows batteries to operate safely, fire detection and suppression systems to isolation switches, batteries are fully engineered with safety in mind backed by real-time monitoring sensors, alert systems and HVAC controls. Lithium-ion battery cells are the safest and most widely used technology for BESS projects globally. Major manufacturers have conducted fire-safety testing and have shared results on how they have been able to suppress thermal runaway failures. These batteries have been designed to meet the industry’s leading safety standards such as UL9540, UL9540A and IEC compliance. In the highly unlikely event of a damaged or faulty battery cell, thermal runaway may occur which is an overheating of the cell that can lead to a chemical reaction. To mitigate this potential risk, Eku Energy’s large-scale battery projects are equipped with industry leading safety systems that continuously monitor the system to detect, isolate and alert operators to any potential anomalies. 

Every Eku Energy BESS project is designed with safety in mind, including clear firefighting access, buffer zones, and dedicated water suppression systems. We prepare comprehensive Fire Hazard and Management Plans for all projects, incorporating advanced fire detection and protection measures.

By working closely with local fire authorities throughout the development and operation of our batteries, we ensure that our projects follow global best practices for fire safety and environmental responsibility, keeping the safety of communities at the heart of everything that we do.