Energy Storage Container Certification Requirements

Energy storage systems (ESS) are essential elements in global efforts to increase the availability and reliability of alternative energy sources and to reduce our reliance on energy generated from fossil fuels. Today, ESS are found in a variety of industries and applications, including public utilities, energy companies and grid system.

This document provides an overview of current codes and standards (C+S) applicable to U.S. installations of utility-scale battery energy storage systems.

UL can test your large energy storage systems (ESS) based on UL 9540 and provide ESS certification to help identify the safety and performance of your system.

energy storage technologies or needing to verify an installation’s safety may be challenged in applying current CSRs to an energy storage system (ESS). This Compliance Guide (CG) is intended to help address the acceptability of the design and construction of stationary ESSs, their component parts and the siting, installation, commissioning.

The third edition of the UL 9540 Standard for Safety for Energy Storage Systems and Equipment, published in April 2023, introduces replacements, revisions and additions to the requirements for system deployment.

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6 FAQs about [Energy Storage Container Certification Requirements]

Do energy storage systems need a CSR?

Until existing model codes and standards are updated or new ones developed and then adopted, one seeking to deploy energy storage technologies or needing to verify an installation’s safety may be challenged in applying current CSRs to an energy storage system (ESS).

Who can benefit from energy storage testing & certification services?

We provide a range of energy storage testing and certification services. These services benefit end users, such as electrical utility companies and commercial businesses, producers of energy storage systems, and supply chain companies that provide components and systems, such as inverters, solar panels, and batteries, to producers.

What is the energy storage standard?

The Standard covers a comprehensive review of energy storage systems, covering charging and discharging, protection, control, communication between devices, fluids movement and other aspects.

What are energy storage systems (ESS)?

Energy storage systems (ESS) consist of equipment that can store energy safely and conveniently, so that companies can use the stored energy whenever needed.

What is energy storage system installation review and approval?

4.0 Energy Storage System Installation Review and Approval The purpose of this chapter is to provide a high-level overview of what is involved in documenting or validating the safety of an ESS as installed in, on, or adjacent to buildings or facilities.

Do electric energy storage systems need to be tested?

It is recognized that electric energy storage equipment or systems can be a single device providing all required functions or an assembly of components, each having limited functions. Components having limited functions shall be tested for those functions in accordance with this standard.

Energy Storage Container Certification Requirements