UL 9540A

Entity

UL 9540A standardizes testing for battery energy storage system fire safety.

Sector: battery-storage
HQ: US
Stories: 2 on MGRID.org

Stories about UL 9540A (2)

NYC Drops the Battery Storage Review Threshold to 1 kWh and Requires Engineer Peer Review

June 9, 2026 · Power Quality

3 sources New York City now regulates indoor battery storage directly, and its 1 kilowatt-hour threshold pulls small commercial systems into a permit process that needs an independent engineer to…
UL9540A Tests Drive BESS Safety Standard

April 4, 2026 · Energy Storage

3 sources The updated UL 9540A standard now mandates system-level testing for Battery Energy Storage Systems, moving beyond component-specific evaluations. This change aims to improve the safety and reliability of…