Governor Deval Patrick signed the Global Warming Solutions Act (GWSA) into law in August 2008, making Massachusetts one of the first states in the nation to move forward with a comprehensive regulatory program to address Climate Change. more...

The Legislation: Chapter 298 of the Acts of 2008

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Overview of the Global Warming Solutions Act

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Commonwealth GWSA Steering Committee & Implementation Team

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Massachusetts Clean Energy & Climate Plan for 2020

Executive Office of Energy & Environmental Affairs (EEA), December 2010
EEA web site

Related: Public Comments Received on Global Warming Solutions Act (GWSA) Implementation, June 2010
See Public Hearings & Meetings

Background Information: Draft Climate Implementation Plan, April 2010

Web page

See also the Eastern Research Group (ERG) reports below.

Cost-Effective Greenhouse Gas Mitigation in Massachusetts: An Analysis of 2020 Potential

Draft Report by Eastern Research Group (ERG), May 2010
MS Word 980 KB | PDF 359 KB

Initial Estimates of GHG Emissions Reductions from Existing Policies

Final Report by Eastern Research Group (ERG), April 2010
MS Word 216 KB | PDF 118 KB

2009 Massachusetts Facility GHG Emissions Reports

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Preliminary 2006-2008 Massachusetts Greenhouse Gas Emissions Inventory

December 2010
MS Word 118 KB | PDF 95 KB

Appendix B: Emissions Data
MS Excel 159 KB | PDF 225 KB

Statewide Greenhouse Gas Emissions Level: Final 1990 Baseline & 2020 Business As Usual Projection

July 2009
MS Word 320 KB | PDF 540 KB

Appendix
MS Excel 700 KB | PDF 2.2 MB

MassDEP Response to Comments on Proposed 1990 Baseline & 2020 Projection
MS Word 149 KB | PDF 110 KB

GWSA Implementation Archive

Including public comment drafts of 1990 Baseline, 2020 Business As Usual Projection & Appendix
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Climate Change Adaptation Advisory Committee

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Related News Release: Patrick Administration Appoints Advisory Committee to Assess Climate Change Adaptation Strategies
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Climate Protection & Green Economy Advisory Committee

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Related News Release: Patrick-Murray Administration Appoints Business, Science Leaders to Chair Climate Advisory Committee
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Stakeholder Meeting: Suflur Hexafluoride (SF6) Emissions from Gas-Insulated Switchgear

April 9, 2012
Web Page

Public Comments Received on Global Warming Solutions Act (GWSA) Implementation

June 2010
MS Word 7.4 MB | PDF 2.3 MB

Public Discussions with Experts on Greenhouse Gas Reduction Policy

July 2009
Web page

Public Information Sessions on Climate Change Adaptation

June & July 2009
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Public Information Sessions & Hearing: Global Warming Solutions Act & Green Communities Act

May 2009
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