Northeast

Maine

Maine was the first state to set greenhouse gas reduction targets in 2003, and emissions decreased by 17% between 1990 and 2022. Transportation is the highest-emitting sector, primarily due to the geographically spread-out population. While renewables fuel two thirds of in-state electricity generation, around 50% of households use petroleum products for home heating, a higher share than any other state.
GHG Reduction Targets
All targets relative to 1990 levels
2030
45%
2045
Carbon neutral
Governor
Janet T. Mills (Democrat)
House Party
Democratic Majority
Senate Party
Democratic Majority
Legislative session
1/7/26 - 4/15/26
Electricity market structure
Deregulated
Largest source of GHG emissions
Transportation
Local control status
Home rule

33

Policies Enacted or In Progress
across 7 policy areas

36

Policy Opportunities
across 6 policy areas

Northeast

9 states
This map shows the occurrence of climate policies passed at the state-level. Higher numbers represent more climate policies enacted.

The State Climate Policy Dashboard tracks only passed policies and does not include bills currently proposed in legislative sessions. The website is intended to illustrate the current status of policies for each state, as well as key resources and model states for each policy.

Much of the information contained in this database is derived from the public domain, with links to resources provided. The information provided is made available solely for general information purposes and does not constitute legal advice. Click here for full Terms of Use.

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