Inventory of U.S. Greenhouse Gas Emissions and Sinks: 1990-2021
View the Inventory of U.S. Greenhouse Gas Emissions and Sinks: 1990–2021 (published 2023), developed by the U.S. Government to meet annual commitments under the United Nations Framework Convention on Climate Change (UNFCCC).
Recommended citation: EPA (2023). Inventory of U.S. Greenhouse Gas Emissions and Sinks: 1990-2021. U.S. Environmental Protection Agency, EPA 430-R-23-002. https://www.epa.gov/ghgemissions/inventory-us-greenhouse-gas-emissions-andsinks-1990-2021.
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| Document | Description | Data Files |
|---|---|---|
| 2023 Complete Report (pdf) | Full, complete Inventory report. | 2023 Main Report Tables (zip) |
| 2023 Corrigenda (pdf) | Includes documented changes made to the main text and annex documents after publication on 4/13/23 to correct typographical errors, etc. | |
| 2023 Upfront (pdf) | Includes title page, acknowledgements, and preface. | |
| 2023 Table of Contents (pdf) | Includes the main inventory document’s table of contents. | |
| 2023 Executive Summary (pdf) | Includes data and discussion on the overall estimates and trends in the inventory. | 2023 Executive Summary Tables (zip) |
| 2023 Chapter 1: Introduction (pdf) | Includes background information on how EPA compiles the Inventory and a summary of results for key category and uncertainty analyses. | 2023 Introduction Tables (zip) |
| 2023 Chapter 2: Trends in Greenhouse Gas Emissions (pdf) | Includes a synthesis of data on emission and sinks trends over time. | 2023 Trends in Greenhouse Gas Emissions and Removals Tables (zip) |
| 2023 Chapter 3: Energy (pdf) | Includes emissions data related to the energy sector. | 2023 Energy Tables (zip) |
| 2023 Chapter 4: Industrial Processes and Product Use (pdf) | Includes emissions data related to the industrial processes and product use sector. | 2023 Industrial Processes Tables (zip) |
| 2023 Chapter 5: Agriculture (pdf) | Includes emissions data related to the agricultural sector. | 2023 Agriculture Tables (zip) |
| 2023 Chapter 6: Land Use, Land-Use Change, and Forestry (pdf) | Includes emissions and sinks data related to land use, land use change, and forestry. | 2023 Land Use, Land-Use Change, and Forestry Tables (zip) |
| 2023 Chapter 7: Waste (pdf) | Includes emissions data related to the waste sector. | 2023 Waste Tables (zip) |
| 2023 Chapter 8: Other (pdf) | Includes information on emissions from the "Other" IPCC sector. | |
| 2023 Chapter 9: Recalculations and Improvements (pdf) | Includes the recalculations and improvements discussion comparing the previous Inventory submission covering 1990-2020 to the current Inventory covering 1990-2021. | 2023 Recalculations and Improvements Tables (zip) |
| 2023 Chapter 10: References (pdf) | Includes a list of references used in the main inventory document. | |
| 2023 All Annexes (pdf) | 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. | 2023 Annex Tables (zip) |
| 2023 Annex Introduction and Table of Contents (pdf) | Includes the table of contents for the Annex. | |
| Includes a summary and details on the key category analysis. | 2023 Annex 1 Tables (zip) US GHG Inventory 2023 Annex 1 Supplemental Tables (xlsx) | |
| 2023 Annex 2 (pdf) | Includes further explanation, data, and methodology for emissions related to the energy sector. | 2023 Annex 2 Tables (zip) |
| 2023 Annex 3- Part A (pdf) | Includes further explanation, data, and methodology for source and sink categories other than CO2 from fossil fuel combustion. | 2023 Annex 3 Tables (zip) |
| 2023 Annex 3- Part B (pdf) | Includes further explanation, data, and methodology for source and sink categories other than CO2 from fossil fuel combustion. | 2023 Annex 3 Tables (zip) |
| 2023 Annex 4 (pdf) | Includes the methodology and more detailed data related to estimating emissions from fossil fuel combustion according to IPCC's Reference Approach. | 2023 Annex 4 Fossil Fuel Combustion Tables (zip) |
| 2023 Annex 5 (pdf) | Includes information on greenhouse gas emission sources and sinks which are not included from the Inventory's analysis. | 2023 Annex 5 Assessment of the Sources and Sinks Excluded Tables (zip) |
| 2023 Annex 6 (pdf) | Includes additional information including global warming potentials (GWPs), abbreviations, and non-greenhouse gas emissions data. | 2023 Annex 6 Additional Information Tables (zip) |
| 2023 Annex 7 (pdf) | Includes additional information on the inventory uncertainty analysis. | 2023 Annex 7 Uncertainty Tables (zip) |
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Includes information on QA/QC Procedures used in the development of Inventory sources. | 2023 Annex 8 QAQC Procedures Tables (zip) |
| 2023 Annex 9 (pdf) | Includes information on use of Greenhouse Gas Reporting Program (GHGRP) data in the Inventory. | 2023 Annex 9 Use of EPA GHG Reporting in Inventory Tables (zip) |