Last reviewed on 12-01-2023

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

♦ Category: Energy

IPCC: 1A1ai - Fuel Combustion Activities - Energy Industries - Main Activity Electricity and Heat Production - Electricity Generation
Sector: Electricity Generation (In State) : Merchant Owned

♦ Activity: Fuel combustion - Biomethane

♦ Greenhouse gas: Nitrous oxide ( N2O )

► Year 2018 —

● Greenhouse gas emission estimate —

Amount: 13.19 tonnes of N2O Emitted (3,931 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 = 45,539,157,549 scf of Biomethane
Basis: Data
Reference: CARB (2021). Summary of 2008 to 2019 data from California's Greenhouse Gas Mandatory Reporting Program. Reported emissions are available at: https://ww2.arb.ca.gov/our-work/programs/mandatory-greenhouse-gas-emissions-reporting

● Parameters and Constants used in calculations —

Parameter: Heat content = 461 btu / scf
Reference: CARB (2021). Summary of 2008 to 2019 data from California's Greenhouse Gas Mandatory Reporting Program. Reported emissions are available at: https://ww2.arb.ca.gov/our-work/programs/mandatory-greenhouse-gas-emissions-reporting
Parameter: N2O emission factor = 6.282E-07 g / btu
Reference: CARB (2021). Summary of 2008 to 2019 data from California's Greenhouse Gas Mandatory Reporting Program. Reported emissions are available at: https://ww2.arb.ca.gov/our-work/programs/mandatory-greenhouse-gas-emissions-reporting
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: 2.896E-04 g of N2O per scf of Biomethane
0.0863 g of CO2eq. per scf of Biomethane