The latest test standards for battery energy storage devices

What is a battery energy storage system?

Battery Energy Storage Systems (BESS) are transforming modern energy infrastructure. These systems integrate renewable energy, stabilize grids, and provide backup power. Safety remains a top priority as we adopt these advanced technologies.

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.

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.

Are fire protection requirements not related to battery energy storage system equipment covered?

1.3 Fire protection requirements not related to battery energy storage system equipment are covered by appropriate installation codes. 1.4 See Figure 1.1 for a schematic of the test sequence in this document. See Appendix a which explains: c) Interpretation and application of the results.

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.

Does ul 9540a certify a battery energy storage system?

UL 9540A does not certify products. Instead, it offers important data for designing safer battery energy storage systems (BESS). It also helps with following installation codes like NFPA 855. NFPA 855 is the guideline for installing Battery Energy Storage Systems (BESS).