Transportation energy data book: edition 23 - Oak Ridge National ...

11–6
Most U.S. transportation sector carbon emissions come from petroleum fuels (98%). Motor
gasoline has been responsible for about 60% of U.S. carbon emissions over the last twenty
years.
Table 11.5
U.S. Carbon Emissions from Energy Use in the Transportation Sector, 1990–2001
(million metric tons of carbon)
1990 1995 2001
Fuel Emissions Percentage Emissions Percentage Emissions Percentage
Petroleum
Motor
gasoline 260.5 60.4% 279.0 61.0% 308.0 60.2%
LPGa 0.4 0.1% 0.3 0.1% 0.2 0.0%
Jet fuel 60.1 13.9% 60.0 13.1% 65.6 12.8%
Distillate fuel 75.6 17.5% 85.1 18.6% 107.5 21.0%
Residual fuel 21.6 5.0% 19.4 4.2% 17.8 3.5%
Lubricants 1.8 0.4% 1.7 0.4% 1.6 0.3%
Aviation gas 0.8 0.2% 0.7 0.2% 0.7 0.1%
Subtotal 420.8 97.5% 446.2 97.5% 501.4 98.0%
Other energy
Natural gas 9.8 2.3% 10.4 2.3% 9.2 1.8%
Electricityb 0.7 0.2% 0.9 0.2% 1.0 0.2%
Total 431.3 100.0% 457.5 100.0% 511.6 100.0%
Source:
U.S. Department of Energy, Energy Information Administration, Emissions of Greenhouse Gases in the
United States, 2001, Washington, DC, December 2002, Table 9, and annual.
(Additional resources: www.eia.doe.gov)
a Liquified petroleum gas.
b Share of total electric utility carbon dioxide emissions weighted by sales to the transportation sector.
TRANSPORTATION ENERGY DATA BOOK: EDITION 23—2003