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.

Plug-in solar in Massachusetts

Which codes apply? In Massachusetts, plug-in solar falls under the 2026 NEC and the 2021 IRC.

A small array with its own inverter that plugs into an ordinary outlet. State record read Oct 18, 2026. Data as of Oct 26, 2026.

Codes that reach plug-in solar

The edition Massachusetts 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 Apr 24, 2026

    Where it reaches the product. Article 690 and 705 as written, which is why states write a statute to let the device plug in.

    Massachusetts Electrical Code (527 CMR 12.00), 2026 edition · 527 CMR 12.00

    The Massachusetts NEC record
  2. IRCInternational Residential Code
    2021 IRCVerified

    in force since Oct 11, 2024

    Where it reaches the product. Chapter 39, receptacles and branch circuits.

    Massachusetts Residential Code (780 CMR 51.00), Tenth Edition, Residential Volume · 780 CMR 51.00, s. R101.1

    The 2024 IRC is in development.

    The Massachusetts IRC record

Massachusetts laws that name plug-in solar

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

Law or ruleKindStageDateWhat it does
H5175 energy affordability omnibus (plug-in solar provisions reported by tracker)malegislature.govBillPartialPending–Energy omnibus in conference committee as of 2026-07-16; trackers say it carries plug-in solar rules (proposed 1,200 W, no permit or utility notice). Source (opens in a new tab)

Every Massachusetts law on plug-in solar, 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