UtahUtah's plug-in solar law takes effect
Is plug-in solar legal in Utah?
In effect. First state to legalize plug-in solar — HB 340 permits systems up to 1,200W with no interconnection, permit, or utility approval required.
Last reviewed: July 2026 · Compare Utah with every other state
Utah started it all. In 2025, HB 340 (Solar Power Amendments) became the first U.S. law to expressly allow plug-in solar, creating a new category for small portable solar generation devices up to 1,200W that connect directly to a standard 120V outlet — no interconnection application, permit, or utility approval required.
A bipartisan first
The bill, sponsored by Rep. Raymond P. Ward, drew unanimous bipartisan support. It required qualifying systems to meet NEC and UL certification standards, pairing a light-touch approval process with basic safety guardrails.
The ripple effect
Utah's law kicked off a nationwide movement. In the year that followed, states from Maryland to Colorado to Maine passed their own versions, and legislatures across the country introduced bills modeled on the Utah approach.
Sources & further reading
This is general guidance, not legal advice. Plug-in solar rules vary by state, utility, and local code, and they change often. Always confirm current requirements with your utility and local authority before installing.
Disclaimer: Consumers should consult with a licensed electrician to ensure their home power system is safe, up to code, and compatible with plug-in solar systems.
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