How much can balcony solar save in Maine?

At Maine's average residential rate of about 28.3¢/kWh, a typical 800W plug-in kit saves roughly $198/year. Use the balcony solar calculator for a precise estimate based on your home and sun exposure.

Is plug-in solar legal in Maine?

Legal — signed into law

Yes. Maine has signed plug-in solar into law (LD 1730). Signed by Gov. Mills on April 6, 2026 (2nd state).

LD 1730 — key provisions

Two-tier rule: systems ≤420W are DIY-allowed with no utility notification; systems >420W need a licensed electrician and utility notification within 30 days.
First US law to reference UL 3700 (the national plug-in solar safety standard) by name.
Utilities cannot charge extra fees.

Avg electricity rate

28.3¢/kWh

Est. savings, 800W kit

~$198/yr

Legal size cap

1,200W

Safety basics (everywhere)

Regardless of your state's law, use a kit with a UL 1741 (or UL 3700) certified microinverter, plug into a GFCI-protected outlet on a dedicated circuit, and don't exceed the circuit's rating. These are the same safety rules the new state laws are built around.

Thinking about balcony solar in Maine?

Ask the free Energy Advisor about the rules and your savings, or jump straight to the calculator.

Estimate your exact payback

Our balcony solar calculator models production, savings, and payback for Maine using your home's sun exposure and the best available kits.

Open the balcony solar calculator →

General guidance, not legal advice. Plug-in solar law is changing quickly; this reflects our reading of Maine legislative records and reporting as of June 18, 2026. Confirm the current rule with the Maine legislature and your utility before installing. See all states →