{"data":{"id":"us/40-cfr-table-c-1-to-subpart-c-of-part-98","jurisdiction":"us","citation":"40 CFR Table C-1 to Subpart C of Part 98","heading":"Table C-1 to Subpart C of Part 98—Default CO2 Emission Factors and High Heat Values for Various Types of Fuel","body":"Default CO2 Emission Factors and High Heat Values for Various Types of Fuel\nFuel type Default high heat value Default CO2 emission factor\nCoal and coke mmBtu/short ton kg CO2/mmBtu\nAnthracite 25.09 103.69\nBituminous 24.93 93.28\nSubbituminous 17.25 97.17\nLignite 14.21 97.72\nCoal Coke 24.80 113.67\nMixed (Commercial sector) 21.39 94.27\nMixed (Industrial coking) 26.28 93.90\nMixed (Industrial sector) 22.35 94.67\nMixed (Electric Power sector) 19.73 95.52\nNatural gas mmBtu/scf kg CO2/mmBtu\n(Weighted U.S. Average) 1.026 × 10−3 53.06\nPetroleum products—liquid mmBtu/gallon kg CO2/mmBtu\nDistillate Fuel Oil No. 1 0.139 73.25\nDistillate Fuel Oil No. 2 0.138 73.96\nDistillate Fuel Oil No. 4 0.146 75.04\nResidual Fuel Oil No. 5 0.140 72.93\nResidual Fuel Oil No. 6 0.150 75.10\nUsed Oil 0.138 74.00\nKerosene 0.135 75.20\nLiquefied petroleum gases (LPG) 1 0.092 61.71\nPropane 1 0.091 62.87\nPropylene 2 0.091 67.77\nEthane 1 0.068 59.60\nEthanol 0.084 68.44\nEthylene 2 0.058 65.96\nIsobutane 1 0.099 64.94\nIsobutylene 1 0.103 68.86\nButane 1 0.103 64.77\nButylene 1 0.105 68.72\nNaphtha (\u003c401 deg F) 0.125 68.02\nNatural Gasoline 0.110 66.88\nOther Oil (\u003e401 deg F) 0.139 76.22\nPentanes Plus 0.110 70.02\nPetrochemical Feedstocks 0.125 71.02\nSpecial Naphtha 0.125 72.34\nUnfinished Oils 0.139 74.54\nHeavy Gas Oils 0.148 74.92\nLubricants 0.144 74.27\nMotor Gasoline 0.125 70.22\nAviation Gasoline 0.120 69.25\nKerosene-Type Jet Fuel 0.135 72.22\nAsphalt and Road Oil 0.158 75.36\nCrude Oil 0.138 74.54\nPetroleum products—solid mmBtu/short ton kg CO2/mmBtu.\nPetroleum Coke 30.00 102.41.\nPetroleum products—gaseous mmBtu/scf kg CO2/mmBtu.\nPropane Gas 2.516 × 10−3 61.46.\nOther fuels—solid mmBtu/short ton kg CO2/mmBtu\nMunicipal Solid Waste 9.95 3 90.7\nTires 28.00 85.97\nPlastics 38.00 75.00\nOther fuels—gaseous mmBtu/scf kg CO2/mmBtu\nBlast Furnace Gas 0.092 × 10−3 274.32\nCoke Oven Gas 0.599 × 10−3 46.85\nFuel Gas 4 1.388 × 10−3 59.00\nBiomass fuels—solid mmBtu/short ton kg CO2/mmBtu\nWood and Wood Residuals (dry basis) 5 17.48 93.80\nAgricultural Byproducts 8.25 118.17\nPeat 8.00 111.84\nSolid Byproducts 10.39 105.51\nBiomass fuels—gaseous mmBtu/scf kg CO2/mmBtu\nLandfill Gas 0.485 × 10−3 52.07\nOther Biomass Gases 0.655 × 10−3 52.07\nBiomass Fuels—Liquid mmBtu/gallon kg CO2/mmBtu\nEthanol 0.084 68.44\nBiodiesel (100%) 0.128 73.84\nRendered Animal Fat 0.125 71.06\nVegetable Oil 0.120 81.55\n1 The HHV for components of LPG determined at 60 °F and saturation pressure with the exception of ethylene.\n2 Ethylene HHV determined at 41 °F (5 °C) and saturation pressure.\n3 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.\n4 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.\n5 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.","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER C—AIR PROGRAMS","PART 98—MANDATORY GREENHOUSE GAS REPORTING","Subpart C—General Stationary Fuel Combustion Sources"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-40.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:04Z","sha256":"1f1410e25b3833ff5387dc3863fbc41fffdc1f80f23d9b41caa54f0be2cd14bc","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-98.38","next":"us/40-cfr-table-c-2-to-subpart-c-of-part-98"},"notice":"GroundRules: Original legal text. Not legal advice."}