Is plug-in solar legal in Utah?
Legal now Yes. Utah's plug-in solar law (H.B. 340) has been in effect since May 7, 2025.
| Law | H.B. 340 |
|---|---|
| Signed | Mar 25, 2025 |
| In effect since | May 7, 2025 |
| Size limit | 1,200 W |
| Safety certification | Listed by UL or an equivalent nationally recognized lab; must stop sending power to the grid in an outage |
| Telling your utility | No utility notice required |
| Renters and HOAs | Not addressed in the law |
Before you buy, check the kit’s certification against the rule above. As of our last check, certified microinverters exist (Hoymiles and APsystems, certified to UL 3700 in 2026) but we couldn’t confirm a complete kit certified as a whole system. What UL 3700 means.
What a kit would save in Utah
| Kit size | Solar per year | Saved per year |
|---|---|---|
| 400 W | 427 kWh | $48 |
| 800 W | 855 kWh | $97 |
| 1,200 W | 1,282 kWh | $145 |
Panels on a south-facing balcony railing, Utah’s average sunshine (NREL PVWatts, state average), today’s price of 13.3¢/kWh, and 85% of the output used at home. Run it for your ZIP code.
See every state’s plug-in solar status, or electricity prices and other rules in Utah.