Last reviewed on 12-01-2023

Documentation of California's Greenhouse Gas Inventory (2023 Edition - Last updated on 12-1-2023)

♦ Category: Energy

IPCC: 1A1aii - Fuel Combustion Activities - Energy Industries - Main Activity Electricity and Heat Production - Combined Heat and Power Generation (CHP)
Sector: Commercial : CHP: Commercial : Useful Thermal Output

♦ Activity: Fuel combustion - Natural gas

♦ Greenhouse gas: Nitrous oxide ( N2O )

► Year 2005 —

● Greenhouse gas emission estimate —

Amount: 0.756 tonne of N2O Emitted (225.43 tonnes CO2 Eq.)
Basis: Calculation
Calculation: [Fuel combustion] * [Heat content] * [Fuel N2O emission]
Reference: IPCC (2006). 2006 IPCC Guidelines for National Greenhouse Gas Inventories, Prepared by the National Greenhouse Gas Inventories Programme, Eggleston H.S., Buendia L., Miwa K., Ngara T., and Tanabe K. (eds). Volume 2, Chapter 2: Stationary Combustion. Published: IGES, Japan. http://www.ipcc-nggip.iges.or.jp/public/2006gl/pdf/2_Volume2/V2_2_Ch2_Stationary_Combustion.pdf

● Activity level used in calculations —

Activity: Fuel combustion = 7,349,874,135 scf of Natural gas
Basis: Data
Reference: EIA (2013). Energy Information Administration. Form EIA-906/920/923: Monthly Utility Power Plant Database. Accessed online at: https://www.eia.gov/electricity/data/eia923/#https://www.eia.gov/electricity/data/eia923/

● Parameters and Constants used in calculations —

Parameter: Heat content = 1,029 btu / scf
Reference: EIA (2021). Energy Information Administration. State Energy Consumption, Price, and Expenditure Estimates (SEDS). Available online at: https://www.eia.gov/state/seds/seds-data-complete.php?sid=CA
Parameter: N2O emission factor = 1.000E-07 g / btu
Reference: CARB Mandatory Reporting of Greenhouse Gas Regulation. Subpart C of 40 CFR Part 98 (§§98.30 to 98.38). Available online at: https://www.arb.ca.gov/cc/reporting/ghg-rep/regulation/subpart_c_rule_part98.pdf
Constant: Global warming potential of N2O = 298
Reference: IPCC (2007). Climate Change 2007: The Physical Science Basis. Contribution of Working Group I to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change. Solomon S., Qin D., Manning M., Chen Z., Marquis M., Averyt K.B., Tignor M., and Miller H.L. (eds.). http://www.ipcc.ch/publications_and_data/publications_ipcc_fourth_assessment_report_synthesis_report.htm

● Greenhouse gas emitted per unit activity (derived from values listed above) —

Amount: 1.029E-04 g of N2O per scf of Natural gas
0.0307 g of CO2eq. per scf of Natural gas