Navigating Lithium-Ion Codes

NOVEMBER 2, 2021


by Matthew Balmer, Senior Design Engineer

Various domestic and international agencies established codes and standards disseminating fire safety requirements for the various Energy Storage Systems (ESS) chemistries available in the stream of commerce. These agencies include, but are not limited to:



The below figure depicts how these codes form a hierarchy that pass down safety requirements starting from building construction to ESS installation and application and finalize at ESS testing and ESS safety systems.


These codes are reviewed on a routine basis by a diverse committee ensuring these codes serve the best interest for public safety, advance ESS development/utilization, and inspire nascent technologies. 


But where does Mitsubishi Electric and/or your ESS manufacturer fit into the bigger picture? The breakdown is actually quite simple.


Mitsubishi Electric and the ESS manufacturer provide information required for the design and approval process. Below is a summary of the documentation that often encompasses a sound engineering submittal package:


  • Equipment specifications
  • Drawings
  • Supporting information
  • Construction drawings
  • Equipment manuals
  • Commissioning plan
  • Facility staff training
  • Seismic bracing (when required)
  • System interconnection
  • Systems testing data
  • System maintenance

The owner/engineer then utilizes this information to develop design packages for submittal to the authorities having jurisdiction (AHJ) for review and approval. Mitsubishi Electric's sole objective is to deliver safe and reliable UPS/ESS systems.


We work closely with ESS manufacturers to developed ESS schemes that can be developed in a large variety of applications. Specifically, the lithium-ion battery surge has produced a complex web of anxieties and has increased health and safety requirements for both the public and firefighters.


With this in mind, Mitsubishi Electric partners with established lithium ion suppliers, and as a team, focus on understanding and complying with codes from the system component level to the installation and application level.


Ultimately, navigating the sea of fire safety codes and standards is a formidable task. But, it is also a crucial part of the safety process. Public health and safety are paramount to both our business and yours - we thoroughly verify and validate all ESS designs with our UPS before taking it to market. This guarantees delivery of the safest and most reliable ESS to our valued customers.

Stay up-to-date on industry trends & insights

Follow us on social media