Tech Insights

UL 9540

Last updated May 16, 2025, generated by Sumble

What is UL 9540?

UL 9540 is a safety standard for energy storage systems (ESS) and equipment. It covers the safety requirements for ESS intended for installation in specific locations and applications, including residential, commercial, and grid-connected systems. The standard evaluates the design, construction, and performance of ESS to ensure they operate safely and reliably. ESS certified to UL 9540 are commonly used in grid-tied and off-grid energy storage applications for backup power, self-consumption of renewable energy, and demand response.

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What other technologies are related to UL 9540?

UL 9540 Complementary Technologies

UL 1973

UL 1973 covers batteries for use in stationary, vehicle auxiliary power, and light electric rail applications. It's complementary to UL 9540 as UL 9540 covers energy storage systems, of which batteries are a component. UL 1973 provides the battery safety standard that can be used for UL 9540 certification.

mentioned alongside UL 9540 in 54% (72) of relevant job posts

UL 1741

UL 1741 is the standard for inverters, converters, and controllers used in distributed energy systems. Since energy storage systems often integrate with distributed generation, UL 1741 is complementary as it provides a standard for key components used within systems certified under UL 9540.

mentioned alongside UL 9540 in 39% (84) of relevant job posts

IEEE 1547

IEEE 1547 is a standard for interconnecting distributed resources with electric power systems. Energy storage systems certified under UL 9540 often interconnect with the grid, making IEEE 1547 complementary as it governs the interconnection requirements.

mentioned alongside UL 9540 in 22% (84) of relevant job posts