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Utah

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Plug-In Solar Legal Guide

First US state to legalize plug-in solar. Systems must be UL-listed and plug into a standard 120V or 240V outlet. No permit, no utility notification required under 1,200W.

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New to plug-in solar?

Plug-in solar lets anyone generate free electricity — no roof, no permit, no contractor. A single panel on your balcony can meaningfully cut your bill, especially as rates keep rising.

Law Summary

Signed
Mar 2025
Effective
May 2025
Max size
1200W AC
Rate/kWh
$0.140
Sun hrs
5.5h/day
No permitNo utility approvalNo net meteringITC expired

Verify with your state utility commission before installing. FAQ →

Legal DisclaimerLaws change. Information on this site reflects our best understanding of current statutes as of the date shown. It is not legal advice. Verify requirements with your state utility commission, local building department, and a qualified attorney before installation.

Electricity Cost Trend

6.0%/yr avg — Moderate
Rates up 34% over the past 5 years
From $0.105/kWh in 2021 → $0.140/kWh today. Every year you delay solar, your bills compound.
6.0%
avg. annual increase
Historical avg. residential rate ($/kWh)
$0.105
2021
$0.111
2022
$0.118
2023
$0.125
2024
$0.132
2025
$0.140
2026
20-year projected rate
$0.449/kWh
at 6.0%/yr escalation
Extra you'll pay over 20 yrs*
$2,350
vs. today's rates (1,000 kWh/mo household)
Best time to go solar
Now
Each year of delay = a year of higher grid bills

Payback Calculator

Pre-filled with Utah's average rate ($0.140/kWh) and 5.5 daily peak sun hours. Adjust sliders to match your situation.

Default: 5.5h/day (Utah avg)
$1,200
$900$2,200
800W
400W1200W
60%
30%100%
$0.140/kWh
$0.080/kWh$0.400/kWh
Rate Escalation Scenario
Year 1 Generation
819 kWh
68 kWh/mo
Year 1 Savings
$115
$10/mo
Payback Period
9 yrs
by year 9
25-Year Savings
$5,841
net $4,641
Panels typically last 25–30 years with a 25-year output warranty. Microinverters carry a 10–25 year warranty depending on brand. Battery modules degrade faster — expect 10–15 years before capacity drops below 80%. The 25-year savings figure above assumes the panel and inverter run for the full window; budget ~$200–$400 for an inverter swap around year 15 if needed.
Cumulative Savings vs. Break-even ($)
Selected scenario2% escalation8% escalationBreak-even
Year-by-year table
YearkWh UsedRateSavingsCumulative
1819$0.140$115$115
2815$0.148$121$236
3811$0.157$128$363
4807$0.167$135$498
5803$0.177$142$640
6799$0.187$150$789
7795$0.199$158$947
8791$0.211$166$1,114
9Paid off787$0.223$176$1,289
10783$0.237$185$1,474
11779$0.251$195$1,670
12775$0.266$206$1,876
13771$0.282$217$2,093
14767$0.299$229$2,322
15764$0.317$242$2,564
16760$0.336$255$2,819
17756$0.356$269$3,087
18752$0.377$284$3,371
19748$0.400$299$3,670
20745$0.424$315$3,986
21741$0.449$333$4,318
22737$0.476$351$4,669
23734$0.504$370$5,039
24730$0.535$390$5,429
25726$0.567$412$5,841

Best-fit kits for Utah

sorted by your payback period
2yr payback~$5,672 lifetime

Hoymiles HMS-800-2T-NA Microinverter

UL 1741 dual-MPPT microinverter (North-America model). Pair with your own panels for a custom build. 99.8% MPPT efficiency, integrated WiFi monitoring. Throttle to ≤600W for Maine compliance.

Output
800W
Lifespan
20 yrs
Panel warranty: 0 yr
Inverter: 12 yr
UL1741IEEE1547
$169~$85/yr avg cost
Buy on Amazon ↗
2yr payback~$5,662 lifetime

APsystems EZ1 Microinverter

Plug-in dual-module microinverter for 120V circuits — the inverter used in the US Solar Supplier 810W kit. UL 1741 with built-in monitoring. Configurable output for state-cap compliance.

Output
800W
Lifespan
20 yrs
Panel warranty: 0 yr
Inverter: 12 yr
UL1741IEEE1547
$179~$90/yr avg cost
Buy on Amazon ↗
5yr payback~$5,242 lifetime

EcoFlow STREAM Microinverter Kit

Battery-free version of the STREAM system — just the microinverter for plug-in daytime generation. Add EcoFlow battery modules later. Utah-only sale under HB 340.

Output
800W
Lifespan
25 yrs
Panel warranty: 25 yr
Inverter: 10 yr
UL1741FCC
$599~$120/yr avg cost
Buy on Amazon ↗

Payback estimates use your current slider settings with each product's wattage and price. We earn an affiliate commission on purchases at no extra cost to you.

Calculator AssumptionsSavings estimates are projections based on average sun hours, self-consumption assumptions, and rate escalation scenarios. Actual results vary by roof orientation, shading, usage patterns, and local rate schedules. The federal ITC for residential solar expired December 31, 2025.

Recommended kits for Utah

See all kits in the Kit Finder →

Best-fit kits for Utah

sorted by your payback period
2yr payback~$5,672 lifetime

Hoymiles HMS-800-2T-NA Microinverter

UL 1741 dual-MPPT microinverter (North-America model). Pair with your own panels for a custom build. 99.8% MPPT efficiency, integrated WiFi monitoring. Throttle to ≤600W for Maine compliance.

Output
800W
Lifespan
20 yrs
Panel warranty: 0 yr
Inverter: 12 yr
UL1741IEEE1547
$169~$85/yr avg cost
Buy on Amazon ↗
2yr payback~$5,662 lifetime

APsystems EZ1 Microinverter

Plug-in dual-module microinverter for 120V circuits — the inverter used in the US Solar Supplier 810W kit. UL 1741 with built-in monitoring. Configurable output for state-cap compliance.

Output
800W
Lifespan
20 yrs
Panel warranty: 0 yr
Inverter: 12 yr
UL1741IEEE1547
$179~$90/yr avg cost
Buy on Amazon ↗
5yr payback~$5,242 lifetime

EcoFlow STREAM Microinverter Kit

Battery-free version of the STREAM system — just the microinverter for plug-in daytime generation. Add EcoFlow battery modules later. Utah-only sale under HB 340.

Output
800W
Lifespan
25 yrs
Panel warranty: 25 yr
Inverter: 10 yr
UL1741FCC
$599~$120/yr avg cost
Buy on Amazon ↗

Payback estimates use your current slider settings with each product's wattage and price. We earn an affiliate commission on purchases at no extra cost to you.

Browse the full Kit Finder

Compare every UL-certified kit, microinverter, and accessory legal in Utah — filtered by your 1200W limit.

HOA & Landlord Rules

The #1 real-world blocker for renters & condo owners
Can my HOA block it?
HOA cannot block installation

Utah has no state law prohibiting HOAs from restricting plug-in solar. HOAs may ban or restrict balcony/plug-in systems through their CC&Rs. However, because plug-in systems require no permanent installation or structural modification, many HOAs have not specifically addressed them — review your CC&Rs carefully.

Can my landlord block it?
Landlord may restrict installation

HB 340 does not override landlord authority. Landlords may restrict modifications to the property. Because plug-in solar requires only an outlet (no wiring changes), it is more likely to be permitted than rooftop systems. Get written permission before installing.

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Practical tip for Utah renters and condo owners: Because plug-in solar requires no permanent installation — just an outlet — it is in a different legal category from rooftop solar. Many HOAs and landlords have not specifically addressed it in their rules. Ask in writing before assuming either yes or no.

Utility: Rocky Mountain Power

Net metering
✗ Not available
Interconnection
✓ Not required
Stance
Neutral stance

Rocky Mountain Power does NOT allow net metering for plug-in solar systems. Excess generation that flows to the grid is not credited — any unself-consumed power is simply donated to the grid. Under HB 340, systems under 1,200W do not require an interconnection agreement with RMP. Rocky Mountain Power has not formally opposed plug-in solar legislation.

Frequently Asked Questions

Do I need a permit to install plug-in solar in Utah?
No. Under HB 340, plug-in solar systems up to 1,200W do not require a building permit or utility notification. Systems must be UL-listed and comply with NEC 2023 Section 705.13.
Can I sell excess power back to the grid in Utah?
No. Plug-in solar systems in Utah are not eligible for net metering. Excess generation that flows back to the grid is not credited. This makes your self-consumption rate the most important variable in your payback calculation.
What certifications does my plug-in solar kit need?
Your system must carry UL 1741 certification. The microinverter or power optimizer must be listed for grid-interactive use. Rocky Mountain Power does not require a separate interconnection agreement for systems under 1,200W covered by HB 340.
Is there a state tax credit for plug-in solar in Utah?
Utah's residential solar tax credit (25% up to $1,600) historically applied to rooftop PV systems — its applicability to plug-in systems is unconfirmed. The federal 30% ITC expired December 31, 2025. Consult a licensed tax professional before making purchase decisions based on credits.
What happens if I exceed 1,200 watts?
Systems over 1,200W fall outside HB 340's simplified pathway and require a standard interconnection agreement with Rocky Mountain Power, plus potentially a building permit. The 1,200W limit applies to AC output, not panel nameplate DC rating.
I'm a renter. Can I install plug-in solar in Utah?
HB 340 does not override landlord authority over modifications. However, since plug-in systems require no wiring changes or permanent installation — just an outlet — landlord approval is more likely than for rooftop systems. Get written permission before installation.
Electrical Safety WarningPlug-in solar systems involve electrical connections that can cause fire, shock, or property damage if installed incorrectly. Only use UL-listed equipment. Do not modify wiring, exceed outlet amperage ratings, or bypass any safety device. Consult a licensed electrician when in doubt. This site does not provide installation advice.