The suggested initial minimum distance between BESS structures and occupied buildings has also increased from 25 metres to 30 metres, with spacing between BESS enclosures reduced to 3ft if the unit has passed certain tests. The National Fire Chiefs Council (NFCC) has updated its guidance on the development and planning of grid-scale battery energy storage systems (BESS) Approved for publication in December 2025, the updated document supersedes guidance first issued in 2023 and is intended to support fire and rescue. Grid-scale battery energy storage systems (BESS) are regulated by the Health and Safety Executive within a robust framework which requires BESS designers, installers, and operators to take the necessary measures to ensure health and safety throughout all stages of the system's construction. This document is intended to provide guidance to local goverments considering developing ordinances or rules related to the development of utility-scale battery energy storage systems. For organizations exploring renewable energy integration or backup power, understanding this code. This engineering guide from Circuit Energy explains the critical safety, engineering, and compliance requirements for installing a commercial outdoor Battery Energy Storage System (BESS) under NFPA 855 standards. It breaks down the technical rules that determine when full regulatory compliance is.
