Is plug-in solar legal in Maine?

What the Maine law says

• Size. Up to 1,200 W of AC output.
• Safety listing. UL 3700.
• Telling the utility. Yes. Only for systems over 420 W, within 30 days of installing.
• Timing. July 2026, 90 days after the session ended. The exact day is not confirmed.

Public Law Chapter 644. Utilities cannot require approval or charge fees.

What this means if you live here

The law is in force, so the question is less "is it allowed" and more "which product can I actually buy". Look at the certification line above before you pay for anything. A kit that is not listed to what the law asks for is the place people tend to get stuck.

Renters, condos and apartments

Nothing we have read about the law in Maine covers renters, landlords or condo associations, so we will not guess. Your lease and your landlord's rules still apply.

What it might save you

We have not put a Maine savings figure on this page yet, because we have not finished checking the state electricity price and a solar output figure for Portland. Our calculator is the place to try your own numbers once the US version is up. The method is on the methodology page.

Nearby states we have covered

New Hampshire. See the full state tracker to compare rules.

How Maine compares

Other states with a law in force: Utah, Maryland and Vermont. For a different picture, see Virginia. A law in force is the easy case to understand, but the kit itself still matters. If you want the plain-English version of what a panel, an inverter and a plug are doing, read how plug-in solar works.