Plug-in solar in Maine
Maine LD 1730 was signed by Governor Janet Mills on April 6, 2026, as Chapter 644, with an effective date on or after July 15, 2026. The law allows plug-in solar devices up to 1,200 watts with tiered installation and utility notification requirements based on system size.
Days until law takes effect
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Effective date: July 15, 2026
Plug-in solar will be legal in Maine as of July 15, 2026. You cannot connect a plug-in system to the grid until that date.
Get notified the day this law takes effect
We'll email you as soon as plug-in solar becomes legal in Maine — so you know exactly when you can install.
Where LD 1730 stands right now
Introduced
Committee
Floor Vote
Signed
Apr 6, 2026
Takes effect
Jul 15, 2026
Signed
Governor Janet Mills signed LD 1730 into law as Chapter 644, with an effective date on or after July 15, 2026.
Recent updates
Apr
6
2026
Governor Janet Mills signed LD 1730 into law as Chapter 644, with an effective date on or after July 15, 2026.
Apr
2
2026
The Maine Legislature gave final approval to LD 1730, sending the plug-in solar bill to the governor's desk.
Mar
24
2026
The Maine House of Representatives passed LD 1730 on enactment by a vote of 79–65.
Mar
18
2026
The Maine Senate passed LD 1730 to be engrossed as amended by a vote of 29–3.
Mar
17
2026
The Maine Senate accepted the committee's majority Ought To Pass As Amended report for LD 1730 by a vote of 25–8.
Mar
12
2026
The Committee on Energy, Utilities and Technology reported LD 1730 out with a divided report — majority Ought To Pass As Amended and minority Ought Not To Pass.
Jan
29
2026
The Committee on Energy, Utilities and Technology held a work session on LD 1730 and voted 10–2 in favor of passage.
Apr
22
2025
LD 1730, sponsored by Senator Nicole Grohoski and Representative Gary Friedmann, was introduced in the 132nd Legislature and referred to the Committee on Energy, Utilities and Technology.
What an 800W system saves in Maine
Monthly savings
$20
Annual savings
$238
Payback period
~5 yrs
Based on 25.47¢/kWh avg rate · 800W system · 3.9 peak sun hours/day
Products Available in Maine
Maine has passed enabling legislation (LD 1730). Plug-in grid connections take effect on the law's effective date — browse certified systems and components available in Maine in the meantime.
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