Inventory of U.S. Greenhouse Gas Emissions and Sinks: 1990-2019

View the Inventory of U.S. Greenhouse Gas Emissions and Sinks: 1990–2019 (published 2021), developed by the U.S. Government to meet annual U.S. commitments under the United Nations Framework Convention on Climate Change (UNFCCC).

• 2021 Complete Report (pdf) (April 2021, 430-R-21-005)
  Full, complete Inventory report. Corrected per corrigenda.
• 2021 Upfront (pdf) (April 2021, 430-R-21-005)
  Includes title page, acknowledgements, and preface.
• 2021 Table of Contents (pdf) (April 2021, 430-R-21-005)
  Includes the main inventory document’s table of contents.
• 2021 Executive Summary (pdf) (April 2021, 430-R-21-005)
  Includes data and discussion on the overall estimates and trends in the inventory.
• 2021 Chapter 1: Introduction (pdf) (April 2021, 430-R-21-005)
  Includes background information on how EPA compiles the Inventory and a summary of results for key category and uncertainty analyses.
• 2021 Chapter 2: Trends in Greenhouse Gas Emissions (pdf) (April 2021, 430-R-21-005)
  Includes a synthesis of data on emission and sinks trends over time.
• 2021 Chapter 3: Energy (pdf) (May 2021, 430-R-21-005)
  Includes emissions data related to the energy sector. (corrected per corrigenda).
• 2021 Chapter 4: Industrial Processes and Product Use (pdf) (April 2021, 430-R-21-005)
  Includes emissions data related to the industrial processes product use sector.
• 2021 Chapter 5: Agriculture (pdf) (April 2021, 430-R-21-005)
  Includes emissions data related to the agricultural sector.
• 2021 Chapter 6: Land Use, Land Use Change, and Forestry (pdf) (April 2021, 430-R-21-005)
  Includes emissions and sinks data related to land use, land use change, and forestry.
• 2021 Chapter 7: Waste (pdf) (May 2021, 430-R-21-005)
  Includes emissions data related to the waste sector. (corrected per corrigenda).
• 2021 Chapter 8: Other (pdf) (April 2021, 430-R-21-005)
  Includes information on IPCC’s other sector.
• 2021 Chapter 9: Recalculations and Improvements (pdf) (April 2021, 430-R-21-005)
  Includes the recalculations and improvements discussion comparing the 1990-2018 inventory submissions to the 1990-2019 inventory submission.
• 2021 Chapter 10: References (pdf) (April 2021, 430-R-21-005)
  Includes a list of references used in the main inventory document.
• 2021 All Annexes (pdf) (April 2021, 430-R-21-005)
  Full, complete Annex which contains further information, more detailed explanations of methodologies, more detailed data, and additional information on greenhouse gas emissions and sinks, supplementing the main Inventory document.
• 2021 Annex Introduction and Table of Contents (pdf) (April 2021, 430-R-21-005)
  Includes the table of contents for the Annex.
• 2021 Annex 1: Key Category Analysis (pdf) (April 2021, 430-R-21-005)
  Includes a summary and details on the key category analysis.
• 2021 Annex 2: Methodology and Data for Estimating CO2 Emissions from Fossil Fuel Combustion (pdf) (April 2021, 430-R-21-005)
  Includes further explanation, data, and methodology for emissions related to the energy sector.
• 2021 Annex 3 - Part A: Methodological Descriptions for Additional Source or Sink Categories (pdf) (April 2021, 430-R-21-005)
  Includes further explanation, data, and methodology for source and sink categories other than CO2 from fossil fuel combustion.
• 2021 Annex 3 - Part B: Methodological Descriptions for Additional Source or Sink Categories (pdf) (April 2021, 430-R-21-005)
  Includes further explanation, data, and methodology for source and sink categories other than CO2 from fossil fuel combustion.
• 2021 Annex 4: IPCC Reference Approach for Estimating CO2 Emissions From Fossil Fuel Combustion (pdf) (April 2021, 430-R-21-005)
  Includes the methodology and more detailed data related to estimating emissions from fossil fuel combustion according to IPCC's Reference Approach.
• 2021 Annex 5: Assessment of the Sources and Sinks of Greenhouse Gas Emissions Not Included (pdf) (April 2021, 430-R-21-005)
  Includes information on greenhouse gas emission sources and sinks which are not included from the Inventory's analysis.
• 2021 Annex 6: Additional Information (pdf) (April 2021, 430-R-21-005)
  Includes additional information including global warming potentials (GWPs), abbreviations, and non-greenhouse gas emissions data.
• 2021 Annex 7: Uncertainty (pdf) (April 2021, 430-R-21-005)
  Includes data and information on the uncertainty analyses run on Inventory source and sink categories as well as the overall uncertainty of the Inventory.
• 2021 Annex 8: QAQC Procedures (pdf) (April 2021, 430-R-21-005)
  Includes information on QA/QC Procedures used in the development of Inventory sources.
• 2021 Expert Review Comment Log (pdf)
  Summary of Expert Review comments and responses.
• 2021 Public Review Comment Log (pdf)
  Summary of Public Review comments and responses
• 2021 Annex 9: Use of EPA Greenhouse Gas Reporting Program in Inventory (pdf) (April 2021, 430-R-21-005)
  Includes information on use of EPA's Greenhouse Gas Reporting Program in the Inventory.
• Corrigenda (pdf) (May 2021, 430-R-21-005)
  Includes documented changes made to the main text and annex documents after the initial publication.