Maine’s plug-in solar law, LD 1730, takes effect July 15, 2026 — making Maine the fifth US state where a landlord cannot prohibit a compliant plug-in solar installation. Tenants must give written notice, not ask permission, and the system must be UL 3700-certified and capped at 1,200 watts.
In two weeks, Maine renters get something almost nobody else in New England has: a law that takes the decision out of a landlord’s hands entirely.
Plug-in solar has spent the last two years moving from a niche European habit to actual US legislation. Utah went first in 2025. Then, in a single stretch of 2026, Maryland, Virginia, Colorado, and Maine all followed — four laws signed within about a month of each other. Maine’s, LD 1730, is the next one to actually flip on.
What LD 1730 actually does
Starting July 15, 2026, a landlord in Maine cannot prohibit a tenant from installing a plug-in solar system on a balcony or patio they control. That’s the headline. The mechanics matter just as much:
Maine LD 1730 · Effective July 15, 2026
Landlords cannot prohibit plug-in solar installations on balconies or patios. Tenants must notify their landlord in writing before installing — not ask for approval. Systems must carry UL 3700 certification and stay under 1,200 watts. No permit, no utility approval, no interconnection fee.
Notify, don’t ask — why that distinction matters
Most of the plug-in solar laws passed so far remove the utility as a barrier but leave the landlord relationship untouched. Maine goes a step further: a tenant doesn’t need a yes. They need to send notice, in writing, that a compliant system is going up — and the landlord’s ability to object is narrowed to genuine safety or structural concerns, not a blanket “no.”
That’s a meaningfully different power balance than a state where the law simply says “utilities must allow it,” and the lease still controls everything else.
Where Maine fits in a fast-moving picture
Five states now have enacted plug-in solar laws: Utah (effective May 2025), Colorado and Maryland (2026), Maine (effective July 15, 2026), and Virginia (signed, but not effective until January 1, 2027). Three more — California, New York, and Connecticut — have bills sitting on a governor’s desk as of mid-2026. See the full state-by-state tracker for exact wattage caps and requirements.
LD 1730 doesn’t require Maine utilities to offer net metering for plug-in systems — savings come from offsetting real-time usage, not selling power back. It doesn’t override genuine safety or structural objections from a landlord. And it doesn’t apply to condos or co-ops governed by an HOA, which can still set their own rules. It’s also worth remembering that the actual savings are modest — a single panel offsets $6–$23 a month depending on Maine’s electricity rate and the panel’s sun exposure. This is a legal unlock, not a windfall.
If you’re a Maine renter
Two weeks out, the practical move is to get ahead of it rather than wait for July 15 to roll around:
- Check your exact address. Sun exposure varies a lot balcony to balcony. Our Solar Advisor pulls a real aerial view of your building and estimates what a panel would actually earn you there.
- Draft your written notice now. You don’t need your landlord’s permission under LD 1730, but a clear, specific notice — wattage, mounting method, UL 3700 certification — heads off any confusion about whether your system qualifies.
- Pick a certified kit. Not every plug-in panel on the market meets the 1,200W cap or carries the right certification. Our recommended kits page only lists systems that clear that bar.
Maine is the fourth state this year to hand renters a real, enforceable right to generate their own power — and the most tenant-favorable one yet. If the pattern from Utah, Maryland, and Colorado holds, it won’t be the last.
Solarly 
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