Last reviewed on 06-22-2018

Documentation of California's Greenhouse Gas Inventory (11th Edition - Last updated on 11-06-2019)

♦ Category: Energy

IPCC: 1A1ai - Fuel Combustion Activities - Energy Industries - Main Activity Electricity and Heat Production - Electricity Generation
Sector: Electricity Generation (Imports) : Specified Imports : Oregon : Hermiston Power (OR)

♦ Activity: Electricity generation - Primary fuel: Natural Gas

♦ Greenhouse gas: Methane ( CH4 )

► Year 2013 —

● Greenhouse gas emission estimate —

Amount: 4.05 tonnes of CH4 Emitted (101.14 tonnes CO2 Eq.)
Basis: Calculation
Calculation: [Electricity Generation] * [CH4 emission factor]
Reference: ARB (2016). Technical support document on GHG inventory methodologies for the 2000-2014 inventory. See Discussion of emissions from electricity imports available at: ttps://ww3.arb.ca.gov/cc/inventory/pubs/reports/2000_2014/ghg_inventory_00-14_technical_support_document.pdf#https://ww3.arb.ca.gov/cc/inventory/pubs/reports/2000_2014/ghg_inventory_00-14_technical_support_document.pdf

● Activity level used in calculations —

Activity: Electricity generation = 564,024,740 kWh of Primary fuel: Natural Gas
Basis: Data
Reference: ARB (2019). Summary of 2008 to 2017 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: CH4 emission factor = 7.196E-03 g / kWh
Reference: ARB (2016). Technical support document on GHG inventory methodologies for the 2000-2014 inventory. See Discussion of emissions from electricity imports available at: ttps://ww3.arb.ca.gov/cc/inventory/pubs/reports/2000_2014/ghg_inventory_00-14_technical_support_document.pdf#https://ww3.arb.ca.gov/cc/inventory/pubs/reports/2000_2014/ghg_inventory_00-14_technical_support_document.pdf
Constant: Global warming potential of CH4 = 25
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: 7.173E-03 g of CH4 per kWh of Primary fuel: Natural Gas
0.179 g of CO2eq. per kWh of Primary fuel: Natural Gas
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