This is a guide for plan review and inspections for lithium ion-based ESS installations. The technologies in scope include stationary and mobile energy storage. Not in scope include small portable generators, UPS, battery banks used in telecom applications. This document references the current edition of codes and standards (NFPA 855-2023, NFPA 1-2021, 2024 IRC, 2024 IFC, 2023 NEC, UL 9540-2nd Edition and UL 9540A-4th Edition
Published Date: May 4, 2025
Number of pages: 12
Staff Contact: Casey Granata