Yes — Utah has a plug-in solar law

Utah wrote the playbook. HB 340, passed unanimously in 2025 and in force since May 7, 2025, created the legal category of a portable solar generation device: a system of up to 1,200 watts that plugs into an ordinary 120-volt outlet and is used to offset the household's own consumption.

Almost every state law since has copied its structure. The device must be certified by Underwriters Laboratories or an equivalent lab, comply with the National Electrical Code, and include protection that prevents it from energizing the building during a power outage — the anti-islanding feature that keeps line workers safe.

What the law does for you#

• No interconnection agreement. You don't file an application with Rocky Mountain Power before plugging in.
• No net metering. Surplus electricity that flows back to the grid is not credited. Size the system to your daytime base load so most of the output is consumed at home.
• Utility liability shield. The utility is not liable for damage or injury caused by your equipment, so your own homeowners or renters insurance matters.

Is it worth it in Utah?#

Utah has some of the best sun in the country but one of the lowest residential electricity prices, so the payback is slower than in coastal states. A well-placed 800 W kit typically pays for itself in the second half of a ten-year window — faster if you can tilt it south and use most of what it produces during the day.