The Pine Tree State joins Utah and Virginia in advancing a law that establishes rules for small plug-in solar generation devices.
The Maine State House in Augusta
MonsieurNapoléon, CC BY-SA 3.0
With the state Senate’s passage of LD 1730 on April 2, 2026, Maine became the third state in the U.S. to pass legislation allowing citizens to use small plug-in solar devices to offset some of their electricity usage — joining Utah, which passed the nation’s first bill in 2025, and Virginia, which acted earlier this year.
Like the previous bill’s Maine’s law would allow any retail electricity customer to install and use a single plug-in photovoltaic or battery system up to 1,200 watts.
The devices may be connected to standard outlets as long as they comply with certain National Electrical Code and UL safety standards.
Notably, the Maine bill is the first to specifically mention the new standards being developed under the UL 3700 outline of investigation, but it would also allow devices certified to comparable standards from other testing laboratories, or that meet the requirements of the National Electrical Code (NEC). 
The bill also prohibits utility companies from requiring interconnection agreements or fees to be paid by customers that use these devices. 
However, unlike the bills in Virginia and Utah, LD 1730 would create two classes of plug-in solar and battery systems defined by their output wattage. 
Owners of systems with power output greater than 420 watts would be required to have the devices installed by a licensed electrician, and required to notify their utility company of their use of the device within 30 days of installation. 
DIY installations of systems with 420 watts or less of power output would be allowed, with no requirement to notify the utility.
Absent from the Maine bill are the kinds of tenant protections that made the Virginia bill unique. The law does have a section regarding a tenant’s use of an eligible device, but it is limited to a requirement that the tenant ensures the system does not compromise the rental property or violate safety codes, and will reverse any changes they make to the structure when removing the device.
While Maine has a “solar rights” law on the books, the current statute only protects the rights of Maine renters to use “solar clothes-drying devices.” As written, the existing solar rights law allows restrictions on solar devices for a number of reasons, including “on residential property in common ownership with 3rd parties or common elements of a condominium.”
The bill, entitled “An Act to Make Small Plug-in Solar Generation Devices Accessible for All Maine Residents to Address the Energy Affordability Crisis,” will now head to the desk of governor Janet Mills, who will have 10 days to veto or sign it into law.
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