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.

Inverters and power control in Pennsylvania

Which codes apply? In Pennsylvania, inverters and power control systems fall under the 2020 NEC and the 2021 residential IECC.

The inverter, the power control system, and the interconnection to the grid. State record read Oct 18, 2026. Data as of Oct 26, 2026.

Codes that reach inverters and power control systems

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

  1. NECNational Electrical Code
    2020 NECPartial

    in force since Jan 1, 2026 · Statewide, with exceptions

    Where it reaches the product. Article 705, interconnected power sources, with 690 and 706 for the source and the listing the inverter must carry.

    NFPA 70 (National Electrical Code) as referenced by the Pennsylvania UCC’s 2021 IBC · 34 Pa. Code Sec. 403.21 (adopts the 2021 IBC, which references NFPA 70), Regulation #12-125

    The Pennsylvania NEC record
  2. IECC residentialInternational Energy Conservation Code, residential
    2021 IECCVerified

    in force since Jan 1, 2026 · Statewide, with exceptions

    Where it reaches the product. Where a state adopts the solar-ready or storage-ready appendix, the space and the conduit the inverter needs.

    Pennsylvania Uniform Construction Code (UCC), 2021 International Energy Conservation Code as adopted · 34 Pa. Code Sec. 403.21 as amended by Regulation #12-125 (55 Pa.B., Nov. 8, 2025); Construction Code Act, 35 P.S. 7210.304

    The 2024 IECC is in development.

    The Pennsylvania IECC residential record

Pennsylvania laws that name inverters and power control systems

On the site: one law or rule, newest first.

Law or ruleKindStageDateWhat it does
PPL distributed energy resource management planDocket P-2024-3049223Commission orderPartialIn forceJan 3, 2026Lets the utility expand its distributed energy resource management devices and manage smart inverter settings on customer solar and batteries under set conditions. Source (opens in a new tab)

Every Pennsylvania law on inverters and power control systems, with filters

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