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 Delaware

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

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 Delaware 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.

    County and municipal building/electrical codes (16 Del.C. 7601); Reg. 701 does not apply to one and two family dwellings in normal use · 1 DE Admin. Code 701 section 1.3.1.2; 16 Del.C. 7601

    The Delaware NEC record
  2. IRCInternational Residential Code
    Local adoptionPartial

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

    16 Del.C. 7601

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

    Not one- and two-family dwellings. Regulation 701, the State Fire Prevention Regulations, does not apply to one- and two-family dwellings in normal use or maintenance.

    Delaware State Fire Prevention Regulations (NFPA 1, Fire Code, 2024) · 1 DE Admin. Code 701 section 3.1.1; 29 DE Reg. 509 (12/01/25)

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

    in force since Jan 1, 2026 · Adopted directly

    Not one- and two-family dwellings. Regulation 701, which carries NFPA 855, does not apply to one- and two-family dwellings in normal use or maintenance.

    Delaware State Fire Prevention Regulations, 2026 update · 29 DE Reg 509 (12-01-25)

    The Delaware NFPA 855 record

Delaware laws that name residential energy storage systems

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

No Delaware 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