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 Maryland

Which codes apply? In Maryland, plug-in solar falls under the 2017 NEC and the 2021 IRC.

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

Codes that reach plug-in solar

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

  1. NECNational Electrical Code
    2017 NECPartial

    Statewide, with exceptions

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

    COMAR 29.06.01 (State Fire Prevention Code); COMAR 09.12.50.02-1B (Model Performance Code)

    The 2023 NEC is in development.

    The Maryland NEC record
  2. IRCInternational Residential Code
    2021 IRCVerified

    in force since May 29, 2023

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

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

    The Maryland IRC record

Maryland laws that name plug-in solar

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

Law or ruleKindStageDateWhat it does
HB 1532 Utility RELIEF Act (plug-in solar provisions)mgaleg.maryland.govStatutePartialIn forceMay 12, 2026Omnibus act changing permitting, inspection and interconnection for certain residential solar; news says it exempts plug-in systems from utility fees and interconnection. Source (opens in a new tab)

Every Maryland 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