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Inventory of U.S. Greenhouse Gas Emissions and Sinks [1]

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Date: 2017-02-08 12:44:36-05:00

About the Inventory of Greenhouse Gas Emissions and Sinks

EPA develops an annual report, called the Inventory of U.S. Greenhouse Gas Emissions and Sinks (Inventory), that tracks U.S. greenhouse gas emissions and sinks by source, economic sector, and greenhouse gas going back to 1990. EPA has prepared the Inventory of U.S. Greenhouse Gas Emissions and Sinks since the early 1990s. This annual report provides a comprehensive accounting of total greenhouse gas emissions for all man-made sources in the United States, including carbon dioxide removal from the atmosphere by “sinks,” (e.g., through the uptake of carbon and storage in forests, vegetation, and soils) from management of lands in their current use or as lands are converted to other uses. The gases covered by the Inventory include carbon dioxide, methane, nitrous oxide, hydrofluorocarbons, perfluorocarbons, sulfur hexafluoride, and nitrogen trifluoride.

The national greenhouse gas inventory is submitted to the United Nations in accordance with the Framework Convention on Climate Change. In preparing the annual emissions and sinks inventory report, EPA collaborates with hundreds of experts representing more than a dozen U.S. government agencies, academic institutions, industry associations, consultants and environmental organizations. EPA also collects greenhouse gas emissions data from individual facilities and suppliers of certain fossil fuels and industrial gases through the Greenhouse Gas Reporting Program.

Trends

Overview of U.S. Greenhouse Gas Emissions in 2021 Note: All emission estimates from the Inventory of U.S. Greenhouse Gas Emissions and Sinks: 1990–2021. Land Use, Land-Use Change, and Forestry in the United States is a net sink and offsets 12% of these greenhouse gas emissions. This net sink is not shown in the above diagram.



Larger image to save or print.

Key findings from the 1990-2021 U.S. Inventory include:

In 2021, U.S. greenhouse gas emissions totaled 6,340.2 million metric tons of carbon dioxide equivalents, or 5,586.0 million metric tons of carbon dioxide equivalents after accounting for sequestration from the land sector.

Emissions increased in 2021 by 6 percent (after accounting for sequestration from the land sector). The increase in total greenhouse gas emissions was driven largely by an increase in CO 2 emissions from fossil fuel combustion. In 2021, CO 2 emissions from fossil fuel combustion increased by 7 percent relative to the previous year. This increase in fossil fuel consumption emissions was due primarily to economic activity rebounding after the height of the COVID-19 pandemic.

emissions from fossil fuel combustion. In 2021, CO emissions from fossil fuel combustion increased by 7 percent relative to the previous year. This increase in fossil fuel consumption emissions was due primarily to economic activity rebounding after the height of the COVID-19 pandemic. Greenhouse gas emissions in 2021 (after accounting for sequestration from the land sector) were 17 percent below 2005 levels.

See the Data Highlights to learn more about the latest inventory findings.

U.S. Greenhouse Gas Emissions by Economic Sector in 2021 Total U.S. Greenhouse Gas Emissions by Economic Sector



Image to save or print Total U.S. Greenhouse Gas Emissions by Economic Sector and Electricity End-Use



Image to save or print Note: All emission estimates from the Inventory of U.S. Greenhouse Gas Emissions and Sinks: 1990–2021. Greenhouse gas emissions from commercial and residential buildings increase substantially when emissions from electricity end-use are included, due to the relatively large share of electricity use (e.g., heating, ventilation, and air conditioning; lighting; and appliances) in these sectors. Also, if emissions from electricity use are allocated to the industrial end-use sector, industrial activities account for a much larger share of U.S. greenhouse gas emissions. Land Use, Land-Use Change, and Forestry in the United States is a net sink and offsets 12% of these greenhouse gas emissions. This net sink is not shown in the above diagram.

See the Data

EPA has developed an interactive tool that provides access to data from the national greenhouse gas inventory. Visit the Greenhouse Gas Inventory Data Explorer to create customized graphs, examine trends over time, and download the data.

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[1] Url: https://www.epa.gov/ghgemissions/inventory-us-greenhouse-gas-emissions-and-sinks

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