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The following explains how direct GHG emissions reported by facilities are aggregated to the totals for each industry grouping displayed on ghgdata.epa.gov. In the simplest case, where facilities report emissions from only one process, the total emissions reported by that facility are included in the appropriate industry groups total emissions. This is often the case for landfills, and for some facility's who only report emissions from the combustion fossil fuels. For facilities that only reported GHG emissions from fossil fuel combustion in 2010, the emissions are included in the total for their industry group as defined . The Government and Commercial and Other Industrial industry groups are solely made up of facilities who reported emissions from stationary combustion only (note that some stationary combustion only facilities are included in other industry groups as well).

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