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MassDEP Emissions Inventories

The agency prepares inventories on a periodic basis under the federal Clean Air Act and the Massachusetts Global Warming Solutions Act.
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Clean Air Act Emissions Inventories

Massachusetts 2011 Periodic Emissions Inventory: Summary, Open PDF file, 792.78 KB (English, PDF 792.78 KB)
Massachusetts 2011 Periodic Emissions Inventory: Complete, Open ZIP file, 38.22 MB (English, ZIP 38.22 MB)
Massachusetts 2008 Periodic Emissions Inventory: Introduction, Open PDF file, 56.81 KB (English, PDF 56.81 KB)
Massachusetts 2008 Periodic Emissions Inventory: Data, Open PDF file, 137.95 KB (English, PDF 137.95 KB)
Massachusetts 2005 Periodic Emissions Inventory: Introduction, Open PDF file, 21.72 KB (English, PDF 21.72 KB)
Massachusetts 2005 Periodic Emissions Inventory: Data, Open PDF file, 62.2 KB (English, PDF 62.2 KB)
Massachusetts 2002 Base Year Emissions Inventory, Open PDF file, 443.44 KB (English, PDF 443.44 KB)
Tables: Massachusetts 2002 Statewide Emissions, Open PDF file, 821.65 KB (English, PDF 821.65 KB)
Massachusetts 1996 Periodic Emissions Inventories, Open PDF file, 243.51 KB (English, PDF 243.51 KB)
Tables: Massachusetts 1996 Periodic Emissions Inventories, Open XLS file, 145 KB (English, XLS 145 KB)

Diesel Particulate Matter Inventories

Massachusetts 2016 Diesel Particulate Matter Inventory Report, April 2018, Open PDF file, 9.32 MB (English, PDF 9.32 MB)
Massachusetts 2016 Diesel Particulate Matter Inventory Appendices 3-7, April 2018, Open XLSX file, 1.31 MB (English, XLSX 1.31 MB)
Massachusetts 2016 Diesel Particulate Matter Inventory MOVES Files, April 2018, Open ZIP file, 59.71 MB (English, ZIP 59.71 MB)
Massachusetts 2002 Diesel Particulate Matter Inventory Report, September 2007, Open PDF file, 517.57 KB (English, PDF 517.57 KB)
Massachusetts 2002 Diesel Particulate Matter Inventory Appendices, September 2007, Open PDF file, 1.25 MB (English, PDF 1.25 MB)

Greenhouse Gas Baseline & Inventory

Response to Comments on the Statewide Greenhouse Gas Emissions Level: 1990 Baseline Update, and Addendum and 2nd Addendum to the Update, December 2022 , Open PDF file, 595.47 KB (English, PDF 595.47 KB)
2nd Addendum to Statewide GHG Level: Proposed 1990 Baseline Update, June 2022, Open PDF file, 1.04 MB (English, PDF 1.04 MB)
Addendum to Statewide GHG Level: Proposed 1990 Baseline Update, February 2022, Open PDF file, 1000.59 KB (English, PDF 1000.59 KB)
Statewide Greenhouse Gas Emissions Level: Proposed 1990 Baseline Update, Including Appendices A & B, May 2021, Open PDF file, 1.42 MB (English, PDF 1.42 MB)
Appendix C: Massachusetts Annual Greenhouse Gas Emissions Inventory: 1990-2023, Open XLSX file, 1.72 MB (English, XLSX 1.72 MB)
Appendix D: 2001 Draft Electricity Emissions Factors (Including Imports), Open XLS file, 1.19 MB (English, XLS 1.19 MB)
Appendix E: 2002 Draft Electricity Emissions Factors (Including Imports), Open XLS file, 1023.5 KB (English, XLS 1023.5 KB)
Appendix F: 2003 Emissions from Electricity Consumed in Massachusetts , Open XLS file, 1.05 MB (English, XLS 1.05 MB)
Appendix G: 2004 Emissions from Electricity Consumed in Massachusetts, Open XLS file, 1.04 MB (English, XLS 1.04 MB)
Appendix H: 2005 Emissions from Electricity Consumed in Massachusetts, Open XLS file, 1.27 MB (English, XLS 1.27 MB)
Appendix I: 2006 Emissions from Electricity Consumed in Massachusetts, Open XLS file, 1.27 MB (English, XLS 1.27 MB)
Appendix J: 2007 Emissions from Electricity Consumed in Massachusetts, Open XLS file, 1.27 MB (English, XLS 1.27 MB)
Appendix K: 2008 Emissions from Electricity Consumed in Massachusetts, Open XLS file, 1.28 MB (English, XLS 1.28 MB)
Appendix L: 2009 Emissions from Electricity Consumed in Massachusetts, Open XLS file, 1.29 MB (English, XLS 1.29 MB)
Appendix M: 2010 Emissions from Electricity Consumed in Massachusetts, Open XLS file, 1.3 MB (English, XLS 1.3 MB)
Appendix N: 2011 Emissions from Electricity Consumed in Massachusetts, Open XLS file, 1.31 MB (English, XLS 1.31 MB)
Appendix O: 2012 Emissions from Electricity Consumed in Massachusetts, Open XLS file, 1.37 MB (English, XLS 1.37 MB)
Appendix P: 2013 Emissions from Electricity Consumed in Massachusetts, Open XLS file, 1.41 MB (English, XLS 1.41 MB)
Appendix Q: 2014 Emissions from Electricity Consumed in Massachusetts, Open XLS file, 1.38 MB (English, XLS 1.38 MB)
Appendix R: 2015 Emissions from Electricity Consumed in Massachusetts , Open XLS file, 1.45 MB (English, XLS 1.45 MB)
Appendix S: 2016 Emissions from Electricity Consumed in Massachusetts , Open XLS file, 1.49 MB (English, XLS 1.49 MB)
Appendix T: 2017 Emissions from Electricity Consumed in Massachusetts, Open XLS file, 1.74 MB (English, XLS 1.74 MB)
Appendix U: 2018 Emissions from Electricity Consumed in Massachusetts, Open XLSX file, 850.92 KB (English, XLSX 850.92 KB)
Appendix V: 2019 Emissions from Electricity Consumed in Massachusetts , Open XLSX file, 889.1 KB (English, XLSX 889.1 KB)
Appendix W: 2020 Emissions from Electricity Consumed in Massachusetts, Open XLS file, 1.89 MB (English, XLS 1.89 MB)
Appendix X: 2021 Emissions from Electricity Consumed in Massachusetts, Open XLSX file, 940.07 KB (English, XLSX 940.07 KB)
Appendix Y: 2022 Emissions from Electricity Consumed in Massachusetts, Open XLSX file, 1019.72 KB (English, XLSX 1019.72 KB)
Appendix Z: 2023 Emissions from Electricity Consumed in Massachusetts, Open XLSX file, 1.02 MB (English, XLSX 1.02 MB)
Response to Comments on Statewide GHG Emissions Baseline & Projection Update, July 2016, Open PDF file, 160.73 KB (English, PDF 160.73 KB)
Statewide Greenhouse Gas Emissions Baseline & Projection Update (including Appendices A & B), July 2016, Open PDF file, 456.97 KB (English, PDF 456.97 KB)
Statewide Greenhouse Gas Emissions Level: 1990 Baseline & 2020 Business As Usual Projection, July 2009, Open PDF file, 543.4 KB (English, PDF 543.4 KB)

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