CO2 in SJC
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Population of San Juan County17128
https://www.census.gov/quickfacts/sanjuancountywashington
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car ownership (vehicles per 1000 people)939
Wikipedia. List of U.S. states by vehicles per capita
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Estimated number of vehicles in San Juan County16083
(calculated based on assumptions above)
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Average vehicle operation --miles per year8863
http://www.wstc.wa.gov/StatewideTransportationSystem/documents/2014_RUCFleetJunesurvey_Report_000.pdf
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CO2 emissions from average US passenger car (kg / mile)0.404
https://www.epa.gov/greenvehicles/greenhouse-gas-emissions-typical-passenger-vehicle
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CO2 Emissions from vehicles (thousand metric tons/yr) in San Juan County58
(calculated based on assumptions above)
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Electricity
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MWh sold (OPALCO)218,021
http://www.opalco.com/about/
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kg CO2 per MWh (OPALCO)21
https://www.opalco.com/sustainability-and-the-environment/fuel-mix/
https://www.bpa.gov/p/Generation/Fuel-Mix/Pages/Fuel-Mix.aspx
Discussion with Jay Kimball, OPALCO
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CO2 Emissions per year from electricity (thousand metric tons/year)5
(calculated based on assumptions above)
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kg CO2 per MWh (hydro only)4
https://www.bpa.gov/p/Generation/Fuel-Mix/Pages/Fuel-Mix.aspx
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CO2 Emissions per year from electricity (thousand metric tons/year)1
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Average CO2 emissions per hour (tonnes/hour)0.52
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Ferries
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Estimated average number of ferries4.5
http://www.wsdot.com/ferries/vesselwatch/Default.aspx
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Estimated average number of hours each ferry operates12.8
6am to 10pm with 20% of time waiting at dock
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Fuel consumption of average WA ferry (gal diesel/hour)260
US EPA. CMV Emissions by Fuel Consumption and Power Demand Methods
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kg CO2 per gallon of diesel used in ferry10.25
WA Department of Transportation (2012). Drive or sail: comparing cost, time, and greenhouse gas emissions
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kg CO2 per ferry per hour2665
(calculated based on assumptions above)
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CO2 Emissions per year from ferries (thousand metric tons/year)56.0
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Total SJC emissions from transport, electricity and ferries (thousand tonnes/yr)118.2
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Thousand metric tonnes CO2 equivalent per year
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Electricity5
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Vehicles (gasoline & diesel)58
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Ferries56
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Growlers (after additional 36 planes added)604
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