40 CFR Appendix Table C-1 to Subpart C of Part 98 - Table C–1 to Subpart C of Part 98—Default CO2 Emission Factors and High Heat Values for Various Types of Fuel
Default CO2 Emission Factors and High Heat Values for Various Types of Fuel
| Fuel type | Default high heat value | Default CO2 emission factor |
|---|---|---|
| Coal and coke | mmBtu/short ton | kg CO2/mmBtu |
| Anthracite | 25.09 | 103.69 |
| Bituminous | 24.93 | 93.28 |
| Subbituminous | 17.25 | 97.17 |
| Lignite | 14.21 | 97.72 |
| Coal Coke | 24.80 | 113.67 |
| Mixed (Commercial sector) | 21.39 | 94.27 |
| Mixed (Industrial coking) | 26.28 | 93.90 |
| Mixed (Industrial sector) | 22.35 | 94.67 |
| Mixed (Electric Power sector) | 19.73 | 95.52 |
| Natural gas | mmBtu/scf | kg CO2/mmBtu |
| (Weighted U.S. Average) | 1.026 × 10−3 | 53.06 |
| Petroleum products—liquid | mmBtu/gallon | kg CO2/mmBtu |
| Distillate Fuel Oil No. 1 | 0.139 | 73.25 |
| Distillate Fuel Oil No. 2 | 0.138 | 73.96 |
| Distillate Fuel Oil No. 4 | 0.146 | 75.04 |
| Residual Fuel Oil No. 5 | 0.140 | 72.93 |
| Residual Fuel Oil No. 6 | 0.150 | 75.10 |
| Used Oil | 0.138 | 74.00 |
| Kerosene | 0.135 | 75.20 |
| Liquefied petroleum gases (LPG) 1 | 0.092 | 61.71 |
| Propane 1 | 0.091 | 62.87 |
| Propylene 2 | 0.091 | 67.77 |
| Ethane 1 | 0.068 | 59.60 |
| Ethanol | 0.084 | 68.44 |
| Ethylene 2 | 0.058 | 65.96 |
| Isobutane 1 | 0.099 | 64.94 |
| Isobutylene 1 | 0.103 | 68.86 |
| Butane 1 | 0.103 | 64.77 |
| Butylene 1 | 0.105 | 68.72 |
| Naphtha (<401 deg F) | 0.125 | 68.02 |
| Natural Gasoline | 0.110 | 66.88 |
| Other Oil (>401 deg F) | 0.139 | 76.22 |
| Pentanes Plus | 0.110 | 70.02 |
| Petrochemical Feedstocks | 0.125 | 71.02 |
| Special Naphtha | 0.125 | 72.34 |
| Unfinished Oils | 0.139 | 74.54 |
| Heavy Gas Oils | 0.148 | 74.92 |
| Lubricants | 0.144 | 74.27 |
| Motor Gasoline | 0.125 | 70.22 |
| Aviation Gasoline | 0.120 | 69.25 |
| Kerosene-Type Jet Fuel | 0.135 | 72.22 |
| Asphalt and Road Oil | 0.158 | 75.36 |
| Crude Oil | 0.138 | 74.54 |
| Petroleum products—solid | mmBtu/short ton | kg CO |
| Petroleum Coke | 30.00 | 102.41. |
| Petroleum products—gaseous | mmBtu/scf | kg CO |
| Propane Gas | 2.516 × 10−3 | 61.46. |
| Other fuels—solid | mmBtu/short ton | kg CO2/mmBtu |
| Municipal Solid Waste | 9.95 3 | 90.7 |
| Tires | 28.00 | 85.97 |
| Plastics | 38.00 | 75.00 |
| Other fuels—gaseous | mmBtu/scf | kg CO2/mmBtu |
| Blast Furnace Gas | 0.092 × 10−3 | 274.32 |
| Coke Oven Gas | 0.599 × 10−3 | 46.85 |
| Fuel Gas 4 | 1.388 × 10−3 | 59.00 |
| Biomass fuels—solid | mmBtu/short ton | kg CO2/mmBtu |
| Wood and Wood Residuals (dry basis) 5 | 17.48 | 93.80 |
| Agricultural Byproducts | 8.25 | 118.17 |
| Peat | 8.00 | 111.84 |
| Solid Byproducts | 10.39 | 105.51 |
| Biomass fuels—gaseous | mmBtu/scf | kg CO2/mmBtu |
| Landfill Gas | 0.485 × 10−3 | 52.07 |
| Other Biomass Gases | 0.655 × 10−3 | 52.07 |
| Biomass Fuels—Liquid | mmBtu/gallon | kg CO2/mmBtu |
| Ethanol | 0.084 | 68.44 |
| Biodiesel (100%) | 0.128 | 73.84 |
| Rendered Animal Fat | 0.125 | 71.06 |
| Vegetable Oil | 0.120 | 81.55 |
1 The HHV for components of LPG determined at 60 °F and saturation pressure with the exception of ethylene.
2 Ethylene HHV determined at 41 °F (5 °C) and saturation pressure.
3 Use of this default HHV is allowed only for: (a) Units that combust MSW, do not generate steam, and are allowed to use Tier 1; (b) units that derive no more than 10 percent of their annual heat input from MSW and/or tires; and (c) small batch incinerators that combust no more than 1,000 tons of MSW per year.
4 Reporters subject to subpart X of this part that are complying with § 98.243(d) or subpart Y of this part may only use the default HHV and the default CO2 emission factor for fuel gas combustion under the conditions prescribed in § 98.243(d)(2)(i) and (d)(2)(ii) and § 98.252(a)(1) and (a)(2), respectively. Otherwise, reporters subject to subpart X or subpart Y shall use either Tier 3 (Equation C–5) or Tier 4.
5 Use the following formula to calculate a wet basis HHV for use in Equation C–1: HHVw = ((100 − M)/100)*HHVd where HHVw = wet basis HHV, M = moisture content (percent) and HHVd = dry basis HHV from Table C–1.