Power Output of an Ox
Emissions
Assumptions:
Ox can healthily work for 6 hours per day
100% efficiency energy conversion from mechanical to electrical
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Power output of an ox: 0.6 horsepower or 430 watts
Energy per day= .6 HP * ( .75 KW / HP ) * 6 hours a day
= 2.7 kWh / day / ox
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Assumption ~ An Ox providing 1 kWh per day will need to double its calorie intake, and this will cause it to double its methane output
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Ox power:
0.57 Horsepower or 430 watts
Emissions: 70-120 kg CO4/year
Methane ~ 23 times as potent a greenhouse
gas as CO2
Assume: Ox spends 6 hours per day used in transportation, agriculture or electricity
generation
Equivalent 0.162 kg of Methane per kWh
GHG equivalent of 3000 grams of CO2/kWh
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Comparison to other Energy Technologies:
Solar: 41 g CO2/KWh
Wind: 11 g CO2/KWh
Diesel Generator: 10,000 g CO2/kWh
Space Comparison
Solar Photovoltaics
PV Module = 200W / m^2
450W / (200W/m^2 )
= 2.25m^2
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Ox Powered Electricity
Ox = 22.5 mW / m^2
Grass fed = 12140.6 m^2
Grain fed = 36422 m^2
Assume 20,000 m^2
Cost Comparison
Ox:
Capital ~ $650
Ongoing ~ $0.50 per kWh
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450 Watt Solar Array @ $.50/Watt
Capital~ 325
$225 of PV Module
$145 battery (cost per kWh)
Ongoing ~ negligible