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Q56. How is this reporting rule different from the Inventory of U.S. Greenhouse Gas Emissions and Sinks report (Inventory)?

A56. The Inventory is a comprehensive top-down national assessment of national greenhouse gas (GHG) emissions, and uses national energy data and other national statistics.  The use of the aggregated national data means that the national emissions estimates are not broken down at the geographic or facility level.  In contrast, this reporting rule focuses on bottom-up data and individual sources above appropriate thresholds.  While the rule will provide more specific data, it will not provide full coverage of total annual U.S. GHG emissions, as is required in the development of the Inventory of U.S. Greenhouse Gas Emissions and Sinks in reporting to the United Nations Framework Convention on Climate Change (UNFCCC).  The Inventory is developed by EPA annually, in consultation with other U.S. agencies, as a required under the UNFCCC.

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