Is plug-in solar legal in Connecticut?
Legal now Yes. Connecticut's plug-in solar law (HB 5340 (Public Act 26-127)) has been in effect since Oct 1, 2026.
| Law | HB 5340 (Public Act 26-127) |
|---|---|
| Signed | June 4, 2026 |
| In effect since | Oct 1, 2026 |
| Size limit | 1,200 W, one device per meter |
| Safety certification | Listed by UL or an equivalent lab to UL 1741; must shut off 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 Connecticut
| Kit size | Solar per year | Saved per year |
|---|---|---|
| 400 W | 372 kWh | $77 |
| 800 W | 744 kWh | $155 |
| 1,200 W | 1,115 kWh | $232 |
Panels on a south-facing balcony railing, Connecticut’s average sunshine (NREL PVWatts, state average), today’s price of 24.5¢/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 Connecticut.