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Figure 7-4 Energy Use by Mode of Transportation: 2014

Graphic Version | Excel

Total = 26 quadrillion Btu Percent Total
Air 6.2% 1,602
Rail freight 2.0% 511
Transit & Amtrak 0.6% 142
Water 3.8% 974
Pipeline 3.4% 862
Highway 0.0%  
Light-duty 61.6% 15,830
Single-unit truck 7.2% 1,862
Combination truck 14.2% 3,640
Bus 1.1% 279
  100.0% 25,702

KEY: Btu = British thermal unit

SOURCE: Air–Bureau of Transportation Statistics, Office of Airline Information. Rail–Association of American Railroads. Transit–Federal Transit Administration. Amtrak–National Railroad Passenger Corporation (Amtrak), personal communication with Energy Management Department and Government Affairs Department. Water– U.S. Department of Energy, Energy Information Administration and U.S. Department of Transportation, Federal Highway Administration. Pipeline– U.S. Department of Energy, Energy Information Administration. Highway– Federal Highway Administration as cited in U.S. Department of Transportation, Bureau of Transportation Statistics, National Transportation Statistics, table 4-6, available at as of March 2015.


The following conversion rates were used:

Jet fuel = 135,000 Btu/gallon.

Aviation gasoline = 120,200 Btu/gallon.

Automotive gasoline = 125,000 Btu/gallon.

Diesel motor fuel = 138,700 Btu/gallon.

Compressed natural gas = 138,700 Btu/gallon.

Distillate fuel = 138,700 Btu/gallon.

Residual fuel = 149,700 Btu/gallon.

Natural gas = 1,031 Btu/ft3.

Electricity 1kWh = 3,412 Btu, negating electrical system losses. To include approximate electrical system losses, multiply this conversion factor by 3.

Updated: Sunday, May 21, 2017