The U.S. Inventory of Greenhouse Gas Emissions and Sinks: Fast Facts U.S. Greenhouse Gas Emissions and Sinks (Tg CO2 Equivalents) ?990 to 2004 Gas/Source 1990 I 1991 1992 C02 ! 5 0053 ! 49fi1 8 I H OH7 7 Fossil Fuel Combustion j 4,696.6 Non-Energy Use of Fuels 117.2 Iron and Steel Production j 85.0 Cement Manufacture i 33.3 Waste Combustion j 10.9 Ammonia Production and Urea Application 19.3 Lime Manufacture j 11.2 Limestone and Dolomite Use i 5.5 Natural Gas Flaring j 5.8 Aluminum Production 7.0 Soda Ash Manufacture and Consumption j 4.1 Petrochemical Production i 2.2 Titanium Dioxide Production 1.3 Phosphoric Acid Production 1.5 Ferroalloys 2.0 Carbon Dioxide Consumption i 0.9 Zinc Production j 0.9 Lead Production 0.3 Silicon Carbide Consumption 0.1 Land-Use Change and Forestry (Sink)1 j (910.4) International Bunker Fuels* I 113.5 Biomass Combustion* 216.7 CH4 | 618.1 Landfills 172.3 Natural Gas Systems j 126.7 Enteric Fermentation 117.9 Coal Mining j 81.9 Manure Management i 31.2 Wastewater Treatment j 24.8 Petroleum Systems 34.4 Rice Cultivation 7.1 Stationary Sources 7.9 Abandoned Coal Mines j 6.0 Mobile Sources 4.7 Petrochemical Production 1.2 Iron and Steel Production 1.3 Field Burning of Agricultural Residues j 0.7 Silicon Carbide Production + International Bunker Fuels' j 0.2 N20 394.9 Agricultural Soil Management j 266.1 Mobile Sources 43.5 Manure Management j 16.3 Nitric Acid | 17.8 Human Sewage j 12.9 Stationary Sources 12.3 Settlements Remaining Settlements 5.6 AdipicAcid | 15.2 N20 Product Usage 4.3 Waste Combustion 0.5 Field Burning of Agricultural Residues 0.4 Forest Land Remaining Forest Land i 0.1 International Bunker Fuels* I 1.0 MFCs, PFCs, and SF6 | 90.8 Substitution of Ozone Depleting Substances j 0.4 HCFC-22 Production | 35.0 Electrical Transmission and Distribution j 28.6 Semiconductor Manufacture 2.9 Aluminum Production j 18.4 Magnesium Production and Processing 5.4 Total | 6,109.0 4,656.6 | 4,760.2 123.3 | 116.3 76.2 | 73.7 32.5 | 32.8 12.0 | 12.7 19.2 | 20.0 11.1 | 11.4 5.0 | 4.9 5.9 | 5.3 7.2 | 7.0 4.0 | 4.1 2.3 | 2.4 1.3 | 1.5 1.4 | 1.5 1.8 | 1.8 0.9 | 0.8 1.0 | 1.0 0.3 | 0.3 0.1 | 0.1 (908.5) | (872.6) 119.9 | 709.7 217.6 | 228.1 618.2 | 618.8 172.4 | 172.6 127.5 | 127.0 117.1 | 119.4 79.0 | 77.0 33.2 | 32.0 25.8 | 26.9 34.4 | 33.2 7.0 | 7.9 8.0 | 8.3 6.1 | 6.6 4.6 | 4.6 1.2 | 1.3 1.2 | 1.2 0.6 | 0.8 + I + 0.2 \ 0.2 409.6 | 385.5 278.5 | 252.5 45.5 | 48.5 16.8 | 16.5 17.8 | 18.3 13.3 | 13.5 12.2 | 12.4 5.7 | 5.7 14.8 | 13.1 4.2 | 3.9 0.4 | 0.5 0.4 | 0.4 0.1 | 0.1 7.0 | 0.9 82.5 | 84.3 0.8 | 2.1 30.8 | 34.9 27.3 | 24.7 2.9 | 2.9 15.6 | 14.4 5.1 | 5.4 6,072.1 | 6,146.3 Net Emission (Sources and Sinks) | 5,198.6 { 5,163.6 | 5,273.7 1993 1994 | 1995 1996 1997 1998 i 1999 2000 2001 2002 i 2003 2004 II Absolute Percent 51873 ! 52717 ! 5 3?5 3 I H H08 7 H H80 9 I H 6?fl 1 1 H 69H 0 1 H 864 H 4,887.1 | 4,952.3 119.3 | 130.6 69.3 | 73.3 34.6 | 36.1 13.5 | 14.2 20.4 | 21.1 11.6 | 12.1 4.9 | 5.5 6.8 | 6.9 6.4 | 5.7 4.0 | 4.0 2.6 | 2.7 1.6 | 1.7 1.3 | 1.5 1.7 | 1.8 0.8 | 0.8 1.0 | 0.9 0.3 | 0.3 0.1 | 0.1 (752.0) | (747.8) 99.8 | 97.7 222.3 | 237.3 606.9 | 612.4 172.4 | 170.2 128.3 | 128.9 118.8 | 120.4 65.2 | 65.1 32.8 | 35.1 27.7 | 28.9 32.2 | 31.7 7.0 | 8.2 7.8 | 7.8 6.9 | 8.1 4.6 | 4.4 1.4 | 1.5 1.3 | 1.3 0.6 | 0.8 + I + 0.7 i 0.7 450.6 | 404.1 312.7 | 261.5 50.8 | 52.3 17.0 | 17.0 18.6 | 19.6 13.7 | 14.2 12.6 | 12.8 5.9 | 6.2 14.0 | 15.0 4.5 | 4.5 0.4 | 0.5 0.3 | 0.5 0.1 | 0.1 0.9 | 0.9 88.3 | 89.0 4.7 | 9.6 31.8 | 31.6 28.9 | 26.3 3.6 | 4.0 13.8 | 12.1 5.5 | 5.4 6,333.2 | 6,377.2 4,996.7 | 5,184.2 132.7 | 132.0 73.5 | 67.6 36.8 | 37.1 15.7 | 17.2 20.5 | 20.3 12.8 | 13.5 7.4 | 7.8 9.0 | 8.5 5.8 | 6.2 4.3 | 4.2 2.8 | 2.8 1.7 | 1.7 1.5 | 1.6 1.9 | 2.0 0.8 | 0.8 1.0 | 1.0 0.3 | 0.3 0.1 | 0.1 (614.9) | (603.8) 700.7 | 702.3 241.9 | 244.3 608.9 | 599.0 163.2 | 158.7 128.1 | 129.0 123.0 | 120.5 65.8 | 63.1 36.1 | 34.7 29.9 | 30.7 31.1 | 30.8 7.6 | 7.0 8.1 | 8.3 8.2 | 8.4 4.3 | 4.2 1.5 | 1.6 1.3 | 1.3 0.7 | 0.8 + I + 0.7 i 0.7 454.2 | 462.9 308.1 | 314.4 53.4 | 54.2 17.1 | 17.0 19.9 | 20.7 14.2 | 14.4 12.9 | 13.5 6.0 | 6.2 17.2 | 17.0 4.5 | 4.5 0.5 | 0.5 0.4 | 0.4 0.2 | 0.2 0.9 | 0.9 94.8 | 114.1 24.1 | 34.6 27.0 | 31.1 21.2 | 23.8 5.0 | 5.5 11.9 | 12.5 5.6 | 6.6 6,483.3 | 6,684.7 5,581.2 | 5,629.3 j 5,868.4 | 6,080.9 5,242.7 | 5,271.8 139.6 | 152.8 71.8 | 67.7 38.3 | 39.2 17.8 | 17.1 20.7 | 21.9 13.7 | 13.9 7.2 | 7.4 7.9 | 6.6 6.2 | 6.4 4.4 | 4.3 2.9 | 3.0 1.8 | 1.8 1.5 | 1.6 2.0 | 2.0 0.8 | 0.9 1.0 | 1.1 0.3 | 0.3 0.2 | 0.2 (641.3) | (744.0) 109.9 | 774.6 233.2 | 217.2 588.8 | 579.5 151.6 | 144.4 128.0 | 125.4 118.3 | 116.7 62.6 | 62.8 36.4 | 38.8 31.7 | 32.6 30.3 | 29.7 7.5 | 7.9 7.3 | 6.8 7.5 | 6.9 4.0 | 3.8 1.6 | 1.7 1.3 | 1.2 0.8 | 0.8 + I + 0.7 i 0.2 420.5 | 440.6 276.6 | 301.1 54.8 | 54.8 17.3 | 17.4 21.2 | 20.9 14.6 | 14.9 13.5 | 13.4 6.2 | 6.2 10.3 | 6.0 4.8 | 4.8 0.4 | 0.4 0.4 | 0.5 0.3 | 0.4 7.0 | 7.0 120.1 | 133.4 45.2 | 54.5 30.0 | 40.1 21.2 | 16.7 6.3 | 7.1 11.0 | 9.1 6.4 | 5.8 6,710.2 | 6,773.7 5,342.4 | 5,533.7 160.6 | 140.7 63.8 | 65.3 40.0 | 41.2 17.6 | 17.9 20.6 | 19.6 13.5 | 13.3 8.1 | 6.0 6.9 | 5.8 6.5 | 6.2 4.2 | 4.2 3.1 | 3.0 1.9 | 1.9 1.5 | 1.4 2.0 | 1.7 0.8 | 1.0 1.1 | 1.1 0.3 | 0.3 0.1 | 0.1 (765.7) | (759.5) 105.2 | 707.4 222.3 | 226.8 569.0 | 566.9 141.6 | 139.0 121.7 | 126.7 116.8 | 115.6 58.9 | 56.3 38.1 | 38.0 33.6 | 34.3 28.5 | 27.8 8.3 | 7.5 7.0 | 7.3 6.9 | 7.2 3.6 | 3.5 1.7 | 1.7 1.2 | 1.2 0.8 | 0.8 + I + 0.7 i 0.7 419.4 | 416.2 281.2 | 278.2 54.1 | 53.1 17.4 | 17.8 20.1 | 19.6 15.4 | 15.5 13.4 | 13.9 6.2 | 6.0 5.5 | 6.0 4.8 | 4.8 0.4 | 0.4 0.4 | 0.5 0.5 | 0.4 0.9 | 0.9 131.5 | 134.7 62.8 | 71.2 30.4 | 29.8 16.1 | 15.3 7.2 | 6.3 9.0 | 9.0 6.0 | 3.2 6,814.9 | 6,982.3 6,069.0 | 6,029.6 j 6,049.2 | 6,222.8 57952 ! 58159 ! H 877 7 I H 988 0 98? 7 I 196% 5,486.9 | 5,501.8 131.0 | 136.5 57.8 | 54.6 41.4 | 42.9 18.6 | 18.9 16.7 | 18.5 12.8 | 12.3 5.7 | 5.9 6.1 | 6.2 4.5 | 4.6 4.1 | 4.1 2.8 | 2.9 1.9 | 2.0 1.3 | 1.3 1.3 | 1.2 0.8 | 1.0 1.0 | 0.9 0.3 | 0.3 0.1 | 0.1 (768.0) | (768.6) 978 | 895 200.5 | 194.4 560.3 | 559.8 136.2 | 139.8 125.6 | 125.4 114.6 | 114.7 55.5 | 52.5 38.9 | 39.3 34.7 | 35.8 27.4 | 26.8 7.6 | 6.8 6.6 | 6.2 6.6 | 6.0 3.3 | 3.2 1.4 | 1.5 1.1 | 1.0 0.8 | 0.7 + I + 0.7 i 0.7 412.8 | 407.4 282.9 | 277.8 50.0 | 47.5 18.1 | 18.0 15.9 | 17.2 15.6 | 15.6 13.5 | 13.2 5.8 | 6.0 4.9 | 5.9 4.8 | 4.8 0.5 | 0.5 0.5 | 0.4 0.4 | 0.4 0.9 | 0.8 124.9 | 132.7 78.6 | 86.2 19.8 | 19.8 15.3 | 14.5 4.5 | 4.4 4.0 | 5.3 2.6 | 2.6 6,893.1 | 6,915.8 5,571.1 | 5,656.6 960.0 133.5 | 153.4 36.2 53.3 | 51.3 (33.7) 43.1 | 45.6 12.3 19.4 | 19.4 8.4 15.3 | 16.9 (2.4) 13.0 | 13.7 2.5 4.7 | 6.7 1.2 6.1 | 6.0 0.2 4.6 | 4.3 (2.7) 4.1 | 4.2 0.1 2.8 | 2.9 0.7 2.0 | 2.3 1.0 1.4 | 1.4 (0.1) 1.2 | 1.3 (0.7) 1.3 | 1.2 0.3 0.5 | 0.5 (0.4) 0.3 | 0.3 (+) 0.1 | 0.1 + (774. 8) | (780.1) 130.3 84.1 | 94.5 (19.0) 202.1 | 277.2 (5.5) 564.4 | 556.7 (61.3) 142.4 | 140.9 (31.4) 124.7 | 118.8 (7.9) 115.1 | 112.6 (5.3) 54.8 | 56.3 (25.6) 39.2 | 39.4 8.2 36.6 | 36.9 12.1 25.9 | 25.7 (8.8) 6.9 | 7.6 0.4 6.5 | 6.4 (1.4) 5.8 | 5.6 (0.4) 3.0 | 2.9 (1.8) 1.5 | 1.6 0.5 1.0 | 1.0 (0.3) 0.8 | 0.9 0.2 + I + (+) 0.7 i 0.7 (0.1) 386.1 | 386.7 (8.2) 259.2 | 261.5 (4.6) 44.8 | 42.8 (0.6) 17.5 | 17.7 1.4 16.7 | 16.6 (1.2) 15.8 | 16.0 3.1 13.6 | 13.7 1.4 6.2 | 6.4 0.8 6.2 | 5.7 (9.5) 4.8 | 4.8 0.5 0.5 | 0.5 0.1 0.4 | 0.5 0.1 0.4 | 0.4 0.3 0.8 | 0.9 (0.1) 131.0 | 143.0 52.2 93.5 | 103.3 102.9 12.3 | 15.6 (19.4) 14.0 | 13.8 (14.8) 4.3 | 4.7 1.8 3.8 | 2.8 (15.6) 3.0 | 2.7 (2.7) 6,959.1 | 7,074.4 965.4 6,125.1 | 6,147.2 i 6,184.3 | 6,294.3 1,095.7 20.4% 30.9% (39.6)% 36.9% 77.3% (12.5)% 21 .8% 21.1% 3.9% (38.3)% 1 .5% 30.4% 72.7% (8.8)% (35.0)% 37.5% (46.5)% (9.3)% 33.2% (14.3)% (16.7)% (2.5)% (9.9)% (18.2)% (6.2)% (4.5)% (31 .2)% 26.4% 49.0% (25.5)% 6.2% (18.0)% (6.1)% (37.6)% 38.6% (20.8)% 27.2% (66.7)% (35.6)% (2.1)% (1 .7)% (1 .5)% 8.8% (6.8)% 24.2% 11.5% 14.8% (62.2)% 10.8% 9.8% 38.5% 556.3% (11.7)% 57.5% 25,845.2% (55.4)% (51 .7)% 61 .7% (84.5)% (50.0)% 15.8% 21.1% + Does not exceed 0.05 Tg C02 Eq " Sinks are only included in net emissions total. b Emissions from International Bunker Fuels and Biomass Combustion are not included in totals. Note: Totals may not sum due to independent rounding. Emissions weighted using GWP values from IPCC Second Assessment Report (1996) in keeping with UNFCCC reporting guidelines. 1990-2004 Trends • Total GHG emissions rose 16 percent since 1990 (increasing 1.3 percent since 2000) • Dominant gas emitted was C02, mostly from fossil fuel combustion • Methane emissions decreased by 10 percent • Nitrous oxide emissions decreased by 2 percent • HFC, RFC, and SF6 emissions have grown by 58 percent U.S. GHG Emissions by Gas Annual Percent Change in U.S. GHG Emissions 1.7% 8,000 - 7,000 - 6,000 - 5,000 - 4,000 - 3,000 - 2,000 - 1,000 - 0 - I MFCs, PFCs, &SF6 Nitrous Oxide Methane Carbon Dioxide Emissions Allocated to Economic Sector 6,109 6,072 6,146 6333 6,377 6,483 6,685 6,710 6,774 6,815 6,893 6916 6,959 7£4 3 1,500- CT fc Electricity Generation Transportation Industry -Agriculture Commercial Residential 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 United States Environmental Protection Agency Office of Atmospheric Programs (6207J) • April 2006 ------- The U.S. Inventory of Greenhouse Gas Emissions and Sinks: Reference Tables and Conversions Global Warming Potentials (100 Year Time Horizon) Carbon dioxide (C02) 1 1 Methane (CH,)* 21 23 Nitrous oxide (N20) 310 296 HFC-23 11,700 12,000 HFC-125 2,800 3,400 HFC-134a 1,300 1,300 HFC-143a 3,800 4,300 HFC-152a 140 120 HFC-227ea 2,900 3,500 HFC-236fa 6,300 9,400 HFC-4310mee 1,300 1,500 CF, 6,500 5,700 C2F6 9,200 11,900 C,F10 7,000 8,600 C6F14 7,400 9,000 SF6 23,900 22,200 1 IPCC Second Assessment Report (1 996) b IPCC Third Assessment Report (2001) * The methane GWP includes the direct effects and those indirect effects due to the production of tropospheric ozone and stratospheric water vapor. The indirect effect due to the production of C02 is not included. Note: GWP values from the IPCC Second Assessment Report are used in accordance with UNFCCC guidelines. Global Warming Potential (GWP) is defined as the cumulative radiative forcing effects of a gas over a specified time horizon resulting from the emission of a unit mass of gas relative to a reference gas. The GWP-weighted emissions of direct greenhouse gases in the U.S. Inventory are presented in terms of equivalent emissions of carbon dioxide (C02), using units of teragrams of carbon dioxide equivalents (Tg C02 Eq.). Conversion: Tg = 109kg = 106 metric tons = 1 million metric tons The molecular weight of carbon is 12, and the molecular weight of oxygen is 16; therefore, the molecular weight of C02 is 44 (i.e., 12 + [16x2]), as compared to 12 for carbon alone. Thus, carbon comprises 12/44ths of carbon dioxide by weight. Conversion from gigagrams of gas to teragrams of carbon dioxide equivalents: TgCO. Eq.=/ Gg \x(GWP)x/ T9 \ ^otgasj ^.ODOGgJ Guide to Metric Unit Prefixes I Prefix/Symbol Atto (a) Femto (f) Pico (p) Nano (n) Micro (jj ) Mill! (m) Centi (c) Deci (d) — Deca (da) Hecto (h) Kilo (k) Mega (M) Giga (G) Tera (T) Peta (P) Exa (E) Factor 10-18 10-15 10-12 10-9 10-6 10-s 10-2 10-1 10° 101 102 103 106 109 1012 1015 1018 .000000000000000001 .000000000000001 .000000000001 .000000001 .000001 .001 .01 .1 1 1 10 100 1,000 1 ,000,000 1 ,000,000,000 1 ,000,000,000,000 1 ,000,000,000,000,000 1 ,000,000,000,000,000,000 Unit Conversions 1 pound 1 kilogram 0.454 kilograms 2.205 pounds 1 short ton 1 metric ton 1 cubic foot 0.9072 metric tons 1.1023 short tons 0.02832 cubic meters = 16 ounces = 35.27 ounces = 2,000 pounds = 1,000 kilograms = 28.3168 liters 1 U.S. gallon = 3.78541 liters = 0.03175 barrels = 0.02381 barrels petroleum 1 liter = 0.2642 U.S. gallons = 0.0084 barrels = 0.0063 barrels petroleum 1 barrel = 31.5 U.S. gallons =119 liters = 0.75 barrels petroleum 1 barrel petroleum = 42 U.S. gallons = 159 liters 1 foot 1 meter 0.3048 meters 3.28 feet 12 inches 39.37 inches 1 mile 1 kilometer 1.609 kilometers 0.6214 miles 5,280 feet 3,280.84 feet 1 square mile 1 square kilometer 1 acre 2.590 square kilometers 0.386 square miles 43,560 square feet 640 acres 100 hectares 0.4047 hectares = 4,047 square meters Energy Conversions The common energy unit used in international reports of greenhouse gas emissions is the joule. A joule is the energy required to move an object one meter with the force of one Newton. A terajoule (TJ) is one trillion (1012) joules. A British thermal unit (Btu, the customary U.S. energy unit) is the quantity of heat required to raise the temperature of one pound of water one degree Fahrenheit at or near 39.2 Fahrenheit. 1 TJ = 2.388x10" calories 23.88 metric tons of crude oil equivalent 9.478xl08Btu 277,800 kilowatt-hours Energy Btu MFJtu MMBtu BBtu TBtu QBtu Units British thermal unit Thousand Btu Million Btu Billion Btu Trillion Btu Quadrillion Btu I Btu |xl03Btu |xl06Btu |xl09Btu |xl012Btu |xl015Btu Source for all data: U.S. Inventory of Greenhouse Gas Emissions and Sinks 1990-2004 (EPA 2006) C02 Emissions from Fossil Fuel Combustion Fuel Combusted x Carbon Content Coefficient x Fraction Oxidized x (44/12) May include adjustments for carbon stored in fossil fuel-based products, emissions from international bunker fuels, or emissions from territories. Carbon Intensity of Different Fuel Types The amount of carbon in fossil fuels per unit of energy content varies significantly by fuel type. For example, coal contains the highest amount of carbon per unit of energy, while petroleum has about 25 percent less carbon than coal, and natural gas about 45 percent less. Converting Various Physical Units to Energy Units The values in the following table provide conversion factors from physical units to energy equivalent units and from energy units to carbon contents. These factors can be used as default factors, if local data are not available. Conversion Factors to Energy Units (Heat Equivalents) Heat Contents and Carbon Content Coefficients of Various Fuel Types Fuel Type Carbon Content Coefficients Fraction Heat Content (Tg Carbon/QBtu) Oxidized Solid Fuels Anthracite Coal Bituminous Coal Sub-bituminous Coal Lignite Coke Unspecified Gas Fuels Natural Gas Liquid Fuels Crude Oil (Million Btu/Short Ton) 22.57 23.89 17.14 12.87 24.80 25.00 Btu/Cubic Foot 1,030 Million Btu/Barrel 5.80 Natural Gas Liquids and LRGs 3.72 Motor Gasoline Aviation Gasoline Kerosene Jet Fuel Distillate Fuel Residual Fuel Naphtha for Petrofeed Petroleum Coke Other Oil for Petrofeed Special Naphthas Lubricants Waxes Asphalt & Road Oil Still Gas Misc. Products 5.22 5.05 5.67 5.67 5.83 6.29 5.25 6.02 5.83 5.25 6.07 5.54 6.64 6.00 5.80 28.26 25.49 26.48 26.30 31.00 25.34 14.47 20.33 16.99 19.33 18.87 19.72 19.33 19.95 21.49 18.14 27.85 19.95 19.86 20.24 19.81 20.62 17.51 20.33 0.99 0.99 0.99 0.99 0.99 0.99 0.995 0.99 0.995 1.00' 0.99 0.99 0.99 0.99 0.99 0.99 0.99 0.99 0.99 0.99 0.99 0.99 0.99 0.99 Note: For fuels with variable heat contents and carbon content coefficients, 2004 U.S. average values are presented. All factors are presented in gross calorific values (GCV) (i.e., higher heating values). ' Fraction oxidized for motor gasoline is 1.00 in the transportation sector, 0.99 in other sectors. Density Conversions Methane (Natural Gas) Carbon dioxide Natural gas liquids Unfinished oils Alcohol Liquefied petroleum gas Aviation gasoline Naphtha jet fuel Kerosene jet fuel Motor gasoline Kerosene Naphtha Distillate Residual oil Lubricants Bitumen Waxes Petroleum coke Petrochemical feedstocks Special naphtha Miscellaneous products cubic meter cubic meter metric ton metric ton metric ton metric ton metric ton metric ton metric ton metric ton metric ton metric ton metric ton metric ton metric ton metric ton metric ton metric ton metric ton metric ton metric ton 35.32 cubic feet 35.32 cubic feet 11.60 barrels 7.46 barrels 7.94 barrels 11.60 barrels 8.90 barrels 8.27 barrels 7.93 barrels 8.53 barrels 7.73 barrels 8.22 barrels 7.46 barrels 6.66 barrels 7.06 barrels 6.06 barrels 7.87 barrels 5.51 barrels 7.46 barrels 8.53 barrels 8.00 barrels 0.676 kilograms 1.854 kilograms 1,844.20 liters 1,186.04 liters 1,262.36 liters 1,844.20 liters 1,415.00 liters 1,314.82 liters 1,260.72 liters 1,356.16 liters 1,228.97 liters 1,306.87 liters 1,186.04 liters 1,058.85 liters 1,122.45 liters 963.46 liters 1,251.23 liters 876.02 liters 1,186.04 liters 1,356.16 liters 1,271.90 liters Note: Gas densities are at room temperature and pressure. For more information on calculating C02 emissions per kWh, download eGRID at: For other related information, see: http://www.epa.gov/cleanenergy/egrid http://www.epa.gov/globalwarming http://unfccc.int Download the Inventory at: http://www.epa.gov/globalwarming/publications/emissions ------- |