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Is plug-in solar legal in Utah?
Legal (law in force) HB 340 (2025)
- Introduced
- Passed one chamber
- Passed both chambers
- Signed
- In effect (2025-05-07)
Yes. Utah has a plug-in solar law in force allowing systems up to 1,200 W (HB 340 (2025)).
Max system size1,200 Wper dwelling
Electrician / permitNot required by the lawunder the law
Tell the utility?Noneno interconnection agreement
CertificationUL / NRTL listedrequired by the law
What this means for you
✓ What you can do
- Plug a certified kit of up to 1,200 W into a standard outlet without a utility interconnection agreement.
- Skip utility paperwork entirely; no application, fee or approval.
✕ Not yet / not allowed
- Get paid for power you export; size the kit to your daytime use.
- Use an uncertified marketplace inverter; it is outside the law and unsafe.
- Override a lease or HOA covenant; the law does not address landlords.
What the rules say
Utah was first. Since May 7, 2025, one certified plug-in device up to 1,200 W can go into a standard 120 V outlet with no utility approval, no interconnection agreement and no fee. The law is silent on export credit, so size the kit to what you use during the day.
Before you plug in: Utah checklist
- Keep the system at or under 1,200 W of inverter output.
- Buy a kit whose certification matches the law (UL / NRTL listed). Check the label, not the marketing copy.
- No utility notice or approval is needed. Keep the receipt and certification in case your utility asks.
- Renting or in an HOA? The law does not override your lease or covenants, so get written permission first.
- Plug into a wall outlet, never an extension cord or power strip, and keep shared-circuit kits under about 400 W.
The rules in detail
| Law | HB 340 (2025): Solar Power Amendments |
|---|---|
| Signed | March 25, 2025 |
| Effective | May 7, 2025 |
| Max system size | 1,200 W |
| Certification | Certified by Underwriters Laboratories or an equivalent nationally recognized testing laboratory; meets most recent NEC; anti-islanding feature. |
| Utility notice / approval | None; utility may not require approval. |
| Permit / electrician | None in statute. |
| Exported power | Not subject to net metering program; exempt from interconnection requirements/agreements; silent on export compensation. |
| Avg. electricity price | 13.12¢ per kWh |
- Sponsor: Rep. Raymond Ward.
- Outlet / circuit: standard 120-volt AC outlet.
- Utility liability: electrical corporation not liable for any damage or injury (54-15-601(3)(b)).
Legislative background
- Rocky Mountain Power helped draft; passed unanimously.
Savings preview: 800 W kit in Utah
Adjust for your setup →≈ $130/year
Frequently asked questions
Is plug-in solar legal in Utah?
Yes. Utah has a plug-in solar law in force allowing systems up to 1,200 W (HB 340 (2025)).
Do I need a permit or electrician for plug-in solar in Utah?
Not required by the law. A dedicated circuit is still a sensible safety practice.
Do I have to tell my utility in Utah?
No. None; utility may not require approval.
What can an 800 W plug-in kit save in Utah?
Roughly 992 kWh and about $130 per year at Utah's average residential rate of 13.12¢/kWh, assuming a typical balcony or patio mount. See the calculator for your exact setup.