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 Maryland

Which codes apply? In Maryland, residential energy storage systems fall under local adoption of the NEC and the 2021 IRC. The IFC and NFPA 855 do not reach one- and two-family dwellings in Maryland.

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 26, 2026. Data as of Oct 26, 2026.

Codes that reach residential energy storage systems

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

  1. NECNational Electrical Code
    Local adoptionVerified

    The edition for one- and two-family dwellings

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

    Local electrical codes; State Fire Prevention Code does not apply to one- and two-family dwellings · COMAR 09.12.51; COMAR 29.06.01.03D

    The Maryland NEC record
  2. IRCInternational Residential Code
    2021 IRCVerified

    in force since May 29, 2023

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

    Maryland Building Performance Standards · COMAR 09.12.51; Public Safety Article 12-503

    The Maryland IRC record
  3. IFCInternational Fire Code
    Another model codeVerified

    Not one- and two-family dwellings. State matrix says the State Fire Prevention Code does not apply to one- and two-family dwellings or buildings in Baltimore City.

    State Fire Prevention Code · COMAR 29.06.01.06-.09; Public Safety Article, Title 6

    The Maryland IFC record
  4. NFPA 855NFPA 855, Standard for the Installation of Stationary Energy Storage Systems
    2023 NFPA 855Verified

    in force since Jun 23, 2025 · Through NFPA 1, chapter 52 · Edition derived from the fire code the state adopts

    Not one- and two-family dwellings. State matrix says the State Fire Prevention Code does not apply to one- and two-family dwellings or buildings in Baltimore City.

    State Fire Prevention Code, COMAR 29.06.01 · COMAR 29.06.01.08

    The Maryland NFPA 855 record

Maryland laws that name residential energy storage systems

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

No Maryland 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