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Mitigating Greenhouse Gas Emissions

Reducing greenhouse gas emissions in the Commonwealth of Massachusetts.

The Global Warming Solutions Act (GWSA) of 2008 requires a 25% reduction in greenhouse gas (GHG) emissions from all sectors of the economy below the 1990 baseline emission level in 2020 and at least an 80% reduction in 2050.

The Act Creating A Next-Generation Roadmap for Massachusetts Climate Policy, signed into law in 2021, requires at least 50% emissions reduction by 2030, at least 75% emissions reduction by 2040, and at least net zero GHG emissions by 2050, provided that in no event shall the level of emissions in 2050 be higher than a level 85% below the 1990 level.

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Top tasks

GWSA Implementation Progress  MA Decarbonization Roadmap  Clean Energy and Climate Plan for 2025 and 2030 

All other tasks

Public Meetings  Adapting to Climate Change 

What you need to know

GWSA Background  GHG Emissions and Mitigation Policies  GWSA Implementation Advisory Committee  Clean Energy and Climate Plan for 2020   GWSA 10-Year Progress Report  Climate Change Planning Efforts 

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