NFPA 855
Standard for the Installation of Stationary Energy Storage Systems
- Issuing body
- National Fire Protection Association
- Current edition
- 2026
- Published
- 2025
- Last verified
- 2026-08-06
Edition year and cycle stage confirmed. The exact Standards Council issuance date for the 2026 edition is not established here.
What it covers
The controlling US installation standard for stationary energy storage. It governs where a system may be placed, how much energy may be sited in one location, the separation required between units and from exposures, and what fire detection, suppression, ventilation and explosion control the installation must carry. Requirements vary by technology and by whether the installation is indoors, outdoors, or near occupied space.
Editions
- 2026 In force 2025
Reworked how large-scale fire testing evidence is used to justify an installation, with the test basis in Annex G.11 brought into line with the sixth edition of UL 9540A. Separation and explosion control provisions were reorganized alongside that change.
- 2023 Superseded 2022
- 2020 Superseded 2019
Next edition & pipeline
Official source
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View NFPA 855 at National Fire Protection Association ↗