Cost per gallon of synthetic 'gas'

[Curtis Burisch]

Well folks, last time I posted, I screwed up royally. I was equating
kilowatt-hours with kilojoules, and the result is a 3600x inflated figure.

Revised table:

Energy density of petrol (per kilogram)        45,000.00  kJ / kg
Density of petrol                                 737.22  kg / m^3
Energy density of petrol (per litre)           33,174.90  kJ / L
Metric/imperial conversion factor                0.26417  gallons / L
Energy density of petrol (per gallon)         125,580.66  kJ / gallon
Kilojoules per kilowatt-hour                        3600  kJ / kWh
Cost per kilowatt-hour (hypothetical)              $0.01  $ / kWh
Cost per kilojoule (hypothetical)           $0.000002778  $ / kJ
Price per gallon (hypothetical)                    $0.35  $ / gallon

Obviously this is vastly different! (but remember these figures assume 100%
conversion efficiency, and there will clearly be losses; they also ignore
attendant ecological question marks.)

Regards
Curtis