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EPA Greenhouse Gas Data Sets
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Learn more about the differences between data collected through the inventory and the GHGRP (PDF) (2 pp, 461K, About PDF)
U.S. Greenhouse Gas Inventory
EPA develops the national greenhouse gas inventory each year to track the national trend in emissions and removals since 1990. The national greenhouse gas inventory is submitted to the United Nations in accordance with the Framework Convention on Climate Change 
. The national greenhouse gas inventory is a comprehensive, sectoral level accounting of all human-related sources of greenhouse gas emissions in the United States. The emissions presented in the U.S. greenhouse gas inventory are generally based on national-level statistics.
Greenhouse Gas Emissions from Large Facilities
Through EPA's Greenhouse Gas Reporting Program facilities that emit 25,000 metric tons or more per year of GHGs are required to annually report their GHG emissions to EPA. This facility-level data provides a "bottom-up" accounting of the major sources of GHG emissions associated with stationary fuel combustion and industrial processes. Well over half of total U.S. greenhouse gas emissions are accounted for in this facility level data set, including nearly complete coverage of major emitting sectors such as power plants and refineries.
Greenhouse Gas Emissions Associated with Products Supplied
Through EPA's Greenhouse Gas Reporting Program certain suppliers of natural gas, petroleum products and industrial gases are required to report the GHG quantities that would result from the release, combustion or oxidation of these products. The majority of direct GHG emissions associated with the transportation, residential and commercial sectors are accounted for by these suppliers.