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 Illinois

Which codes apply? In Illinois, residential energy storage systems fall under local adoption of the NEC, local adoption of the IRC, another model code 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 Illinois enforces for each code that governs the product, and the part of the code that does.

  1. NECNational Electrical Code
    Local adoptionPartial

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

    20 ILCS 3105/10.09-1 (as amended by P.A. 103-510)

    The Illinois NEC record
  2. IRCInternational Residential Code
    Local adoptionPartial

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

    20 ILCS 3105/10.18; 815 ILCS 670/15

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

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

    Illinois Fire Prevention and Safety Rules · 41 Ill. Adm. Code 100.7

    The Illinois 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.

    Fire Prevention and Safety rules adopting NFPA 101 (2015), with NFPA 1 (2015) for one section · 41 Ill. Adm. Code 100.7

    The Illinois NFPA 855 record

Illinois laws that name residential energy storage systems

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

No Illinois 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