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
Enacted	Low-Emission Vehicle (LEV) Standards Empty column Maine LEV Standards Establishing Policies Department of Environmental Protection Rules, Chapter 127 (2012) Maine LEV Standards	Transportation	Light-Duty Vehicles	2012
Enacted	Zero-Emission Vehicle (ZEV) Mandates Empty column Model Year (MY) 2025: 22% of new passenger vehicle sales are ZEVs. Establishing Policies Chapter 127 Zero Emission Vehicle Standards (2009)	Transportation	Light-Duty Vehicles	2009
Enacted	Electric Vehicle Rebates Empty column Efficiency Maine's Electric Vehicle (EV) Incentive Program offers point-of-sale rebates for new EVs: up to $2,000 for battery EVs and $1,000 for plug-in hybrid EVs. Establishing Policies Electric Vehicle Incentive Program	Transportation	Light-Duty Vehicles
Not Enacted	Low NOx Omnibus Rules Empty column Low NOx Omnibus Rules establish stringent tailpipe emission standards for heavy duty vehicles, updated testing procedures, and technology-neutral compliance mechanisms to reduce nitrous oxide (NOx) pollution. The regulation must be adopted first by California, and other states may adopt the regulation under the federal Clean Air Act.	Transportation	Medium- and Heavy-Duty Vehicles
Not Enacted	Medium- and Heavy-Duty (MHD) Zero-Emission Vehicle (ZEV) Mandates Empty column Medium- and heavy-duty (MHD) zero-emission vehicle mandates, also known as "Advanced Clean Trucks", require automakers to produce and sell a certain number of zero-emission MHD vehicles to fulfill a quota based on a percentage of total sales in states.	Transportation	Medium- and Heavy-Duty Vehicles
Not Enacted	Medium- and Heavy-Duty Electric Vehicle (EV) Rebates Empty column Medium- and heavy-duty (MHD) electric vehicle rebates consist of programs and policies that offer rebates to make MHD electric vehicles more affordable to increase their adoption in a state.	Transportation	Medium- and Heavy-Duty Vehicles
Enacted	Public Fleet Electric Vehicle (EV) Procurement Targets Empty column 50% of the state’s new light-duty vehicles are plug-in hybrid or ZEVs by 2025 \| 100% are plug-in hybrid or ZEVs by 2030 Establishing Policies LD 1579 (2022)	Transportation	Lead by Example	2022
Not Enacted	Electric Bus Procurement Targets Empty column Electric bus procurement targets require that a certain percentage or number of school buses and/or transit buses purchased or leased by the state, transit authorities, and/or school districts must be electric or zero-emissions.	Transportation	Lead by Example
Not Enacted	Electric Vehicle (EV) Charging Infrastructure Requirements Empty column Electric vehicle (EV) charging infrastructure requirements establish mandates for the installation of EV charging infrastructure in new construction or developments, such as residential or commercial buildings, and public parking lots.	Transportation	EV Charging Infrastructure
Not Enacted	Electric Vehicle (EV) Charging Infrastructure Rebates Empty column Electric vehicle (EV) charging infrastructure rebates offer rebates to make the purchase and/or installation costs of EV charging infrastructure more affordable.	Transportation	EV Charging Infrastructure
Not Enacted	Electric Vehicle (EV) and EV Charging Infrastructure Plans Empty column Electric vehicle (EV) and EV charging infrastructure plans are documents that provide a framework to guide the development, coordination, and adoption of EVs and EV charging infrastructure.	Transportation	Transportation Plans and Targets
Not Enacted	Transportation Greenhouse Gas Emissions Reduction Targets Empty column Transportation greenhouse gas (GHG) emissions reduction targets are set by a state to limit emissions in the transportation sector. These targets aim to reduce emissions by specific amounts over time, often expressed as a percentage reduction from a baseline year.	Transportation	Transportation Plans and Targets
Not Enacted	Low Carbon Fuel Standards Empty column A low carbon fuel standard (LCFS) is a market-based mechanism to reduce the carbon intensity of transportation fuels and account for the fuel's life cycle greenhouse gas emissions.	Transportation	Transportation Plans and Targets
Partially Enacted	Bicycle Friendly States Empty column Maine is ranked 26th out of 50 in the 2022 Bicycle Friendly State rankings by the League of American Bicyclists. Establishing Policies Maine Bicycle Friendly State Scorecard Policy Components enacted enacted not-enacted not-enacted enacted 3/5	Transportation	Public and Active Transportation

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