Northeast

Maine

Maine was the first state to set greenhouse gas reduction targets in 2003, and emissions decreased by 74% between 1990 and 2021. The transportation sector is driving the state’s emissions, primarily due to the geographically spread-out population. Long winters place the residential sector’s emissions closely behind transportation, as buildings require significant heating in the state’s colder months.

GHG Reduction Targets

All targets relative to 2005 levels

2030 :

45%

2045 :

Carbon neutral

Governor

Janet T. Mills (Democrat)

House Party

Democratic Majority

Senate Party

Democratic Majority

Legislative session

1/3/24 - 4/17/24

US Climate Alliance Status

Member

Key Offices & Links

27

Policies Enacted or In Progress

across 7 policy areas

See all

35

Policy Opportunities

across 6 policy areas

See all

Northeast

9 states

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

Compare with other states

Progress by Policy Area

Enacted
In-progress
Partially Enacted
Not Enacted

Glossary of Terms

Status	Policy	Policy Area	Policy Category	YR Enacted
Not Enacted	Buy Clean Requirements Empty column Buy clean requirements mandate or incentivize the use of low-carbon construction materials, such as concrete and steel, in public projects to address embodied carbon.	Industry, Materials, and Waste Management	Industrial Decarbonization
Enacted	Hydrofluorocarbon (HFC) Regulations Empty column The state prohibits the use of certain HFCs in specific stationary refrigeration and air-conditioning products that are manufactured or used in Maine. Establishing Policies LD 226 (2021)	Industry, Materials, and Waste Management	F-gas Regulations	2021
Not Enacted	Sulfur Hexafluoride (SF6) Regulations Empty column Sulfur hexafluoride (SF6) regulations include phasedown commitments, reporting requirements, bans, or other measures that reduce SF6 usage and emissions.	Industry, Materials, and Waste Management	F-gas Regulations
Not Enacted	Oil and Gas Methane Regulations Empty column Oil and gas methane regulations include phasedown commitments, reporting requirements, leak detection and repair, or other measures that reduce methane emissions from oil and gas production.	Industry, Materials, and Waste Management	Oil and Gas Regulations
Not Enacted	Fracking Bans Empty column Fracking bans prohibit the practice of hydraulic fracking for the production of oil and/or natural gas by a certain year. Legislation often requires an environmental agency or department to promulgate regulations.	Industry, Materials, and Waste Management	Oil and Gas Regulations
Not Enacted	Landfill Methane Regulations Empty column Landfill methane regulations include rulemakings, emissions monitoring, emissions control, or other measures that reduce methane emissions from decaying organic waste in landfills.	Industry, Materials, and Waste Management	Waste Management
Not Enacted	Food Waste Bans and Targets Empty column Food waste bans and targets include policies that prohibit certain entities that generate specified amounts of food waste (typically commercial businesses and larger institutions) from sending this waste to landfills. Targets aim to reduce total food waste by a certain percentage each target year.	Industry, Materials, and Waste Management	Waste Management

Maine

Key Offices & Links

27

35

Northeast

Progress by Policy Area

Climate Governance and Equity

Cross-Sector

Electricity

Buildings and Efficiency

Transportation

Industry, Materials, and Waste Management

Natural and Working Lands

Greenhouse Gas Emissions Projections in Maine