Codes of Record

What applies to my job?

Pick the state and the product you build, install, or inspect. The card below answers from each state’s own record.

Residential energy storage systems in Montana

Which codes apply? In Montana, residential energy storage systems fall under the 2023 NEC, the 2024 IRC, the 2021 IFC, and the 2020 NFPA 855 through the fire code.

Wall or floor units at a one- or two-family home, about 5 to 20 kWh each, up to 80 kWh in a garage or outdoors. State record read Oct 24, 2026. Data as of Oct 26, 2026.

Codes that reach residential energy storage systems

The edition Montana enforces for each code that governs the product, and the part of the code that does.

  1. NECNational Electrical Code
    2023 NECPartial

    in force since Sep 26, 2026

    Where it reaches the product. Article 706, energy storage systems, with 705 for the interconnection and 710 for stand-alone operation.

    National Electrical Code (NFPA 70) under the Montana state building code · ARM 24.301.401

    The Montana NEC record
  2. IRCInternational Residential Code
    2024 IRCPartial

    in force since Sep 26, 2026

    Where it reaches the product. Section R328, stationary storage battery systems in dwellings.

    International Residential Code, 2024 Edition, as adopted in the Montana state building code · ARM 24.301.154

    The Montana IRC record
  3. IFCInternational Fire Code
    2021 IFCPartial

    Where it reaches the product. Chapter 12, energy systems, section 1207, which also points to NFPA 855.

    International Fire Code 2021 Edition (2021 IFC) · ARM 23.12.601

    The 2024 IFC is proposed.

    The Montana IFC record
  4. NFPA 855NFPA 855, Standard for the Installation of Stationary Energy Storage Systems
    2020 NFPA 855Partial

    Through the IFC, chapter 12 · Edition derived from the fire code the state adopts

    Where it reaches the product. Chapter 15, one- and two-family dwellings and townhouses.

    Department of Justice rule adopting the IFC · ARM 23.12.601

    The Montana NFPA 855 record

Montana laws that name residential energy storage systems

Statutes, rules, and commission orders are tracked state by state.

No Montana law or rule on the site names residential energy storage systems. The product page shows the states that have one.

For information only. Your local building or fire official decides which code applies. We check state records often but can miss a recent change, so confirm with your official before you design, permit, or install. Terms of use