2. ENERGY UNITBTU CONTENT 1 barrel (42 gallons) of crude oil5,800,000 Btu 1 gallon of gasoline124,238 Btu (based on U.S. consumption, 2008) 1 gallon of diesel fuel138,690 Btu 1 gallon of heating oil138,690 Btu 1 barrel of residual fuel oil6,287,000 Btu 1 cubic foot of natural gas1,027 Btu (based on U.S. consumption, 2008) 1 therm of natural gas102,700 Btu (based on U.S. consumption, 2008) 1 gallon of propane91,033 Btu 1 short ton of coal19,977,000 Btu (based on U.S. consumption, 2008) 1 kilowatt-hour of electricity3,412 Btu

5. From 2010 Colorado Utilities Report