Table 2. Carbon Emission Factors (Kilograms-carbon per million Btu)
| Fuel Type |
Carbon Coefficient at |
Combustion Fraction |
Adjusted Emissions |
Petroleum |
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Motor Gasoline |
19.35 |
0.990 |
19.16 |
Liquefied Petroleum Gas |
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Used as Fuel |
16.87 |
0.995 |
16.79 |
Used as Feedstock |
17.11 |
0.200 |
3.42 |
Jet Fuel |
19.33 |
0.990 |
19.14 |
Distillate Fuel |
19.95 |
0.990 |
19.75 |
Residual Fuel |
21.49 |
0.990 |
21.28 |
Asphalt and Road Oil |
20.62 |
0.000 |
0.00 |
Lubricants |
20.24 |
0.600 |
12.14 |
Petrochemical Feedstocks |
19.37 |
0.200 |
3.87 |
Kerosene |
19.72 |
0.990 |
19.52 |
Petroleum Coke |
27.85 |
0.500 |
13.93 |
Petroleum Still Gas |
17.51 |
0.995 |
17.42 |
Other Industrial |
20.31 |
0.990 |
20.11 |
Coal |
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Residential and Commercial |
25.92 |
0.990 |
25.74 |
Metallurgical |
25.55 |
0.990 |
25.28 |
Industrial Other |
25.61 |
0.990 |
25.38 |
Electric Utility1 |
25.74 |
0.990 |
25.48 |
Natural Gas |
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Used as Fuel |
14.47 |
0.995 |
14.40 |
Used as Feedstocks |
14.47 |
0.774 |
11.20 |
| 1Emission factors
for coal used for electricity generation are specified by coal supply region and types of
coal, so the average carbon contents for coal varies througout the forecast. The
1997 average is 25.74. Source: Energy Information Administration, Emissions of Greenhouse Gases in the United States 1997, DOE/EIA-0573(97), (Washington, DC, October 1998). |
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