Fuel Use-Based Methodology (Chapter 8.2)
- Determine annual consumption of each fuel combusted ((e.g. bituminous coal, residual fuel oil, distillate fuel (diesel), etc.) at the power-generating facility
- Determine the appropriate CO2 emission factors for each fuel using Equation 8.4.
- The most accurate method is to derive an emission factor for CO2 using the measured characteristics of the fuels combusted. This method requires information on the heat content, carbon content, percentage oxidization of the fuels. This information can be determined either through fuel sampling and analysis or from data provided by fuel suppliers.
If the heat content of measured carbon content for specific fuels cannot be determined, use the default emission factors in Table G.1 and G.2 1 in the LGO Protocol. If oxidation factors are unknown, use a default oxidation factor of 1.00 (100% oxidation).
Determine the appropriate CH4 and N2O emission factors for each fuel, which may be obtained from the facility’s direct monitoring based on periodic exhaust sampling. If this information cannot be obtained, use emission factors from Table G.4 in the LGO Protocol.
- Calculate each fuel’s CO2 emissions using Equation 8.5
- Calculate each fuel’s CH4 and N2O emissions using Equation 8.6.
- Convert CH4 and N2O emissions to CO2 equivalent and determine total emissions using Equation 8.8.