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 Maine

Which codes apply? In Maine, residential energy storage systems fall under the 2026 NEC, the 2021 IRC, NFPA 1 in place of the IFC, and a fire code that predates NFPA 855.

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 Maine enforces for each code that governs the product, and the part of the code that does.

  1. NECNational Electrical Code
    2026 NECVerified

    in force since Jul 1, 2026

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

    Chapter 120, Electrical Installation Standards · 02-318 C.M.R. ch. 120; 32 M.R.S. 1153 and 1153-A

    The Maine NEC record
  2. IRCInternational Residential Code
    2021 IRCPartial

    in force since Apr 7, 2025 · Statewide, with exceptions

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

    MUBEC Chapter 5, Building Code for One and Two-Family Dwellings in Maine · 16-642 C.M.R. chs. 1 and 5; 10 M.R.S. 9721 et seq.

    The Maine IRC record
  3. IFCInternational Fire Code
    Another model codePartial

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

    Chapter 3, Fire Prevention Code (NFPA 1) and Chapter 20, Fire Safety in Buildings and Structures (NFPA 101) · 16-219 C.M.R. chs. 3 and 20; 25 M.R.S. 2452

    The Maine IFC record
  4. NFPA 855NFPA 855, Standard for the Installation of Stationary Energy Storage Systems
    Not referencedVerified

    Fire code predates NFPA 855

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

    Chapter 3, Fire Prevention Code (NFPA 1) and Chapter 20 (NFPA 101) · 16-219 C.M.R. chs. 3 and 20; 25 M.R.S. 2452

    The Maine NFPA 855 record

Maine laws that name residential energy storage systems

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

No Maine 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