Table 16. U.S. Methane Emissions from Stationary Combustion Sources, 1990-1998
(Thousand Metric Tons of Methane)
| Source | 1990 | 1991 | 1992 | 1993 | 1994 | 1995 | 1996 | 1997 | P1998 |
| Residential | |||||||||
| Coal | * | * | * | * | * | * | * | * | * |
| Distillate Fuel | 4 | 4 | 4 | 5 | 4 | 4 | 5 | 5 | 5 |
| Natural Gas | 4 | 4 | 5 | 5 | 5 | 5 | 5 | 5 | 4 |
| LPG | * | * | * | * | * | * | 1 | 1 | * |
| Wood | 512 | 541 | 569 | 483 | 474 | 526 | 525 | 382 | 377 |
| Total | 521 | 550 | 578 | 493 | 483 | 535 | 535 | 392 | 387 |
| Commercial | |||||||||
| Coal | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Fuel Oil | 1 | 1 | 1 | 1 | 1 | 1 | 1 | * | * |
| Natural Gas | 3 | 3 | 3 | 3 | 3 | 4 | 4 | 4 | 4 |
| LPG | * | * | * | * | * | * | * | * | * |
| Wood | * | * | * | * | * | * | * | * | * |
| Total | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 |
| Industrial | |||||||||
| Coal | 7 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 |
| Fuel Oil | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Natural Gas | 11 | 12 | 12 | 13 | 13 | 14 | 14 | 14 | 14 |
| LPG | 2 | 2 | 3 | 2 | 3 | 3 | 3 | 3 | 3 |
| Wood | 4 | 4 | 4 | 4 | 5 | 5 | 5 | 5 | 5 |
| Total | 26 | 26 | 26 | 27 | 28 | 28 | 29 | 28 | 28 |
| Electric Utility | |||||||||
| Coal | 10 | 10 | 10 | 10 | 10 | 10 | 11 | 11 | 11 |
| Fuel Oil | 1 | 1 | 1 | 1 | 1 | * | * | * | 1 |
| Natural Gas | * | * | * | * | * | * | * | * | * |
| Wood | * | * | * | * | * | * | * | * | * |
| Total | 11 | 11 | 11 | 11 | 11 | 11 | 12 | 12 | 12 |
| Total All Fuels | |||||||||
| Coal | 17 | 17 | 17 | 17 | 17 | 17 | 18 | 18 | 18 |
| Fuel Oil | 7 | 7 | 7 | 7 | 7 | 6 | 7 | 6 | 6 |
| Natural Gas | 19 | 20 | 20 | 21 | 21 | 22 | 23 | 23 | 22 |
| LPG | 3 | 3 | 3 | 3 | 3 | 3 | 4 | 4 | 3 |
| Wood | 517 | 545 | 573 | 488 | 478 | 530 | 530 | 387 | 383 |
| Total | 563 | 591 | 620 | 536 | 527 | 579 | 581 | 437 | 432 |
| *Less than 500 metric tons of methane. P = preliminary data. Notes: Data in this table are revised from the data contained in the previous EIA report, Emissions of Greenhouse Gases in the United States 1997, DOE/EIA-0573(97) (Washington, DC, October 1998). Totals may not equal sum of components due to independent rounding. Sources: U.S. Environmental Protection Agency, Office of Air Quality Planning and Standards, Compilation of Air Pollutant Emission Factors, AP-42, web site www.epa.gov/ttn/chief; Energy Information Administration, State Energy Data Report 1996, DOE/EIA-0214(96) (Washington, DC, October 1998); Monthly Energy Review, DOE/EIA-0035(99/09) (Washington, DC, September 1999); and Annual Energy Review 1997, DOE/EIA-0384(97) (Washington, DC, July 1998), p. 267. |
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