This EPA report summarizes U.S. greenhouse gas emissions data from 1990 to 2015, showing that total emissions reached 6,587 million metric tons of CO2 equivalent in 2015, a 2.3% decrease from 2014 levels. Carbon dioxide makes up the largest share at 82% of emissions, with electricity generation and transportation being the biggest contributing economic sectors at 29% and 27% respectively. The report includes detailed emissions breakdowns by gas type, economic sector, and fuel source, along with unit conversion tables and global warming potential values for reference.Open full document
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This EPA fact sheet summarizes U.S. greenhouse gas emissions data for 2015 and trends from 1990 to 2015. It presents emissions by gas type and economic sector, noting that carbon dioxide accounts for 82% of total emissions and electricity generation is the largest sectoral source at 29%. The document includes detailed tables of emissions by source and gas, along with conversion factors and global warming potentials.