Household energy storage safety

Are large-scale energy storage systems safe?

Large-scale energy storage systems pose a greater risk for property and life loss than smaller systems due to their size. NFPA 855 requires 3 ft of space between every 50 kWh of energy storage for safety. However, the Authority Having Jurisdiction (AHJ) can approve closer proximities for larger storage systems based on thermal runaway test results from UL 9540A.

Are battery energy storage systems safe?

WASHINGTON, D.C., March 28, 2025 — Today, the American Clean Power Association (ACP) released a comprehensive framework to ensure the safety of battery energy storage systems (BESS) in every community across the United States, informed by a new assessment of previous fire incidents at BESS facilities.

Is energy storage safe?

Although rare, ESS fires and explosions are a possibility that should be acknowledged and prepared for. Installing UL-certified systems to NFPA standards ensures that energy storage is a safe option for everyday power needs.

How can battery storage facilities be regulated?

In addition to working with fire officials and state policymakers to advance safety standards, the industry has developed a framework to help local governments effectively regulate the construction of battery storage facilities.

Why is energy storage important?

At its core, energy storage facilities are critical infrastructure designed to protect people from power outages,” said ACP VP of Energy Storage Noah Roberts. “Like substations, transformers, and transmission lines, energy storage systems deliver needed power in times when we need it most.

What is ACP's battery storage blueprint for safety?

ACP’s Battery Storage Blueprint for Safety outlines key actions and policy recommendations for state and local jurisdictions to regulate battery storage, enforce the country’s most rigorous safety standards, and ensure coordination on safety and emergency response in all communities.