Do I need to tell Rocky Mountain Power?

The law has no notice step, and your utility can't require its approval before you install or use the device.

Can my utility charge me a fee?

No. The law bars any fee related to the system and any requirement to add extra equipment.

Will I get paid for extra power?

No. Portable solar devices aren't part of net metering.

What safety rules apply?

The device must be certified by UL or an equivalent lab, meet the latest National Electrical Code, and stop feeding the building during an outage.

Can my landlord stop me?

The law doesn't address renters or landlords, so your lease and building rules still apply.

Is Balcony Solar Legal in Utah?

Yes. Utah's HB 340, the Solar Power Amendments, was signed on March 25, 2025 and took effect May 7, 2025. You can plug a portable solar device of up to 1,200 watts into a standard 120-volt outlet with no interconnection agreement, utility approval or fees. It must be certified and shut off during an outage.

Utah balcony solar at a glance

Status	✅ Signed
Bill	HB 340, Rep. Raymond P. Ward and Sen. Wayne A. Harper
Signed	March 25, 2025
Effective	May 7, 2025
Size limit	1,200 W per device
Utility interconnection agreement	Not required
Utility fees	Not allowed
Certification	Certified by UL or an equivalent nationally recognized testing lab; must meet the most recent National Electrical Code
Renter / HOA rules	Not addressed in the bill text
Last checked	October 28, 2026

What HB 340 (Solar Power Amendments) actually does

Covers a portable solar generation device: a movable solar device with a maximum power output of not more than 1,200 W.
It must plug into a standard 120-volt outlet and be meant mainly to offset part of your own electricity use.
Certified hardware: certified by UL or an equivalent nationally recognized testing lab, and meets the most recent National Electrical Code.
It must have a feature that stops it from energizing the building's wiring during a power outage.
No interconnection agreement and no interconnection requirements apply.
Your utility can't require its approval, charge any fee related to the system, or make you install extra controls or equipment.
Not part of net metering, so you don't get credits for power sent to the grid.
The utility is not liable for any damage or injury caused by the device.

Renters, landlords and HOAs in Utah

The bill doesn't say anything about landlords or HOAs, so your lease and building rules still decide. Before you buy:

Read your lease and HOA rules for anything about balcony attachments or electrical devices.
Ask in writing before mounting anything to a railing.
Prefer clamp-on or freestanding mounts that don't drill into the building.

How much can balcony solar save in Utah?

Find your price per kWh on your Rocky Mountain Power or electric cooperative bill.
Check the kit's estimated yearly output for your location and the way your balcony faces (south is best, then east or west).
Multiply: yearly kWh × your price per kWh = rough yearly savings. Or use the balcony solar calculator.

Shade, railing angle and how much of the power you use while it's being made all change the result. Plug-in systems are meant to offset what your home uses, not to sell power back.

Timeline

January 28, 2025: HB 340 introduced in the House.
February 13, 2025: House passes the substitute bill 72–0.
February 28, 2025: Senate passes it 26–0.
March 25, 2025: Governor signs HB 340.
May 7, 2025: The law takes effect.

FAQ

Is balcony solar legal in Utah?: Yes. Since May 7, 2025, portable solar devices up to 1,200 watts that plug into a standard 120-volt outlet are allowed under HB 340.
Do I need to tell Rocky Mountain Power?: The law has no notice step, and your utility can't require its approval before you install or use the device.
Can my utility charge me a fee?: No. The law bars any fee related to the system and any requirement to add extra equipment.
Will I get paid for extra power?: No. Portable solar devices aren't part of net metering.
What safety rules apply?: The device must be certified by UL or an equivalent lab, meet the latest National Electrical Code, and stop feeding the building during an outage.
Can my landlord stop me?: The law doesn't address renters or landlords, so your lease and building rules still apply.

Sources

This page explains the law in plain language. It is not legal advice. Last checked October 28, 2026.