Plug-in solar in Washington
Which codes apply? In Washington, plug-in solar falls under the 2023 NEC and the 2021 IRC.
Codes that reach plug-in solar
The edition Washington enforces for each code that governs the product, and the part of the code that does.
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NECNational Electrical CodeThe Washington NEC record2023 NECVerified
in force since Apr 1, 2024
Where it reaches the product. Article 690 and 705 as written, which is why states write a statute to let the device plug in.
Electrical safety standards, administration, and installation (chapter 296-46B WAC), adopting NFPA 70-2023 · WAC 296-46B-010; chapter 19.28 RCW
The 2026 NEC is adopted, not yet in force for December 31, 2026.
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IRCInternational Residential CodeThe Washington IRC record2021 IRCVerified
in force since Mar 15, 2024
Where it reaches the product. Chapter 39, receptacles and branch circuits.
State Building Code Adoption and Amendment of the 2021 Edition of the International Residential Code (chapter 51-51 WAC) · WAC 51-51-003; WAC 51-51-008; chapter 19.27 RCW
The 2024 IRC is proposed for May 3, 2027.
Washington laws that name plug-in solar
On the site: one law or rule, newest first.
| Law or rule | Kind | Stage | Date | What it does |
|---|---|---|---|---|
| Washington plug-in solar bill (2026) | Bill | Lead onlyDid not pass | – | A plug-in solar bill was heard and opposed by utilities and an electrical workers union; reported stalled. Source (opens in a new tab) |
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