Utah

UT

HB 340 — Plug-In Solar Device Amendments

Permitted
Current Status
Last verified: March 2026

Legislative Status

Signed into law by Gov. Spencer Cox, March 2025. Passed unanimously in both chambers. Effective immediately.

Sponsored by: Rep. Raymond Ward

Legislation Progress

Enacted — Signed into Law

100%

pipeline complete

Introduced
In Committee
Passed Committee
One Chamber
Both Chambers
Gov. Desk
Enacted

Expected Timeline

Effective immediately since March 2025.

Utah Solar Data

Avg. Electricity Rate11.6¢/kWh
TOU Peak Spread
4¢/kWh
Est. Annual Savings
~$175/yr
Last UpdatedMarch 2026
Calculate UT Savings
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Key Provisions

Creates a new legal category for plug-in solar devices up to 1,200 watts. Exempts them from utility interconnection agreements. Allows self-installation without permits. Permits limited backfeeding of excess energy. No new subsidies or tax credits — purely a deregulation measure.

Effective DateMay 7, 2025
Wattage Limit1,200 watts AC output
UL 3700Referenced
PermitWaived
Utility ApprovalWaived
UL 3700 DetailsReferenced but not required (general UL certification or equivalent nationally recognized testing laboratory certification is required)
HOA / DeedNot addressed in the bill text, but external sources indicate it prohibits HOAs from banning or unreasonably restricting these systems.
RentersNot addressed in the bill text, but external sources suggest it applies to homeowners.
Net MeteringPortable solar generation devices are not subject to net metering program requirements, meaning power fed back to the grid is uncompensated.
What Makes This State Unique

Utah was the first state to pass legislation specifically for plug-in solar. It creates a new legal category for 'portable solar generation devices' that are exempt from traditional interconnection requirements and utility approval.

Notable Gaps

The bill does not include provisions for net metering credits for excess generation, and it is limited to residential properties, excluding commercial installations.

What This Means for You

What You Can Do

Buy a UL-certified plug-in solar kit (up to 1,200W), install it yourself on a balcony or yard, and plug it into a GFCI-protected 120V outlet. No permits, no utility approval, no professional installation required.

Current Limitations

Systems over 1,200W still require standard interconnection. No state rebate or tax credit is available under this law. Traditional rooftop systems still require permits.

Official Bill Reference

Enacted — Signed by Governor, March 2025
View Full Bill Text — HB 340

Opens official state legislature website in a new tab.

Utah State Overview

Key data on solar potential, demographics, utilities, and incentives.

Solar Resource
Peak Sun Hours5.47 hrs/day
Optimal Tilt32°
Best FacingDue South (180°)
Est. Annual Output (800W)1,266 kWh/yr
Best MonthsJune–August

The PVWatts energy estimate is based on an hourly performance simulation using a typical-year weather file for Cheyenne, WY. These results are based on assumptions that may not accurately represent technical characteristics of the project.

Major Utilities
Rocky Mountain Power
~1,056,003 customers
Net metering
Dixie Power
~35,000 customers
Net metering
Garkane Energy Cooperative, Inc.
~15,000 customers
Net metering

Population
3,417,734
Total Households
1,079,190
Owner-Occupied
771,940
Renter-Occupied
307,250
Single-Family Homes
707,497
Apartment Units (5+)
117,748
Median Income
$89,168
Median Home Value
$486,200

28% of Utah households are renter-occupied — approximately 307,250 households that could benefit from plug-in solar without owning their home.

Related Articles

In-depth guides and news about plug-in solar in Utah.

News6 min read

Breaking: Maine Becomes Second State to Legalize Plug-In Solar

Governor Janet Mills signed LD 1730 on April 6, 2026, making Maine the second US state to explicitly legalize plug-in solar, joining Utah. At 27.9¢/kWh — one of the highest rates in the country — the economics are compelling. Here's what the law does, who it helps, and what it means for the national movement.

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Colorado Signs HB 26-1007 Into Law: The Highest US Plug-In Solar Limit at 1,920W

Governor Jared Polis signed HB 26-1007 into law on May 7, 2026, making Colorado the 4th US state to legalize plug-in solar. With a 1,920W limit — the highest of any US plug-in solar law — Colorado opens the door to larger, more powerful systems than any other state. Provisions take effect January 1, 2027.

News Coverage

Media coverage of plug-in solar developments in Utah.

Utah becomes first US state to legalize plug-in solar

Canary MediaMarch 2025

Utah HB 340: Plug-In Solar Device Amendments signed into law

Utah LegislatureMarch 2025

Balcony solar is taking state legislatures by storm

Canary MediaFebruary 2026