Global Warming Solutions Act

The Global Warming Solutions Act (GWSA), signed by Governor Patrick in August of 2008, created a framework for reducing heat-trapping emissions to levels that scientists believe give us a decent chance of avoiding the worst effects of global warming. It requires reductions from all sectors of the economy to reach a target of a 25% reduction of Greenhouse Gas (GHG) emissions by 2020 and an 80% reduction by 2050.

Progress Toward Massachusetts Clean Energy & Climate Goals

Massachusetts is proof that striving for reductions in greenhouse gas emissions doesn't hinder economic progress.

Massachusetts & the Regional Greenhouse Gas Initiative (RGGI)

In January 2007, Massachusetts joined the Regional Greenhouse Gas Initiative (RGGI), a cooperative effort by Northeast and Mid-Atlantic states to reduce emissions of carbon dioxide, a greenhouse gas that contributes to global climate change. To address this important environmental issue, RGGI and its member states have developed a regional strategy for controlling emissions, including a market-based, multi-state cap-and-trade program that requires electric power generators to reduce their emissions of carbon dioxide.

Transportation Programs

Learn more about MassDEP's transportation programs and initiatives that help reduce greenhouse gas emissions

Reducing Non-Energy Greenhouse Gas Emissions

Information on Stationary Equipment Refrigerants SF6 and semiconductor manufacturers.

Massachusetts Greenhouse Gas Emissions Reporting Program

Reporting of greenhouse gas emissions provides data that is important for developing emission reduction targets and plans, and for measuring progress toward goals.

How to Get Involved

Contribute your ideas to state greenhouse gas policy discussions and take steps to reduce your personal, household and community carbon footprints.

Greenhouse Gas (GHG) Emissions in Massachusetts

Learn about statewide levels in 1990, projections for 2020 without additional restrictions, and required reporting of facility emissions data to guide state target-setting and progress measurement.