Energy and energy conversion factors
Energy content of biofuels
Per capita energy consumption
US 327GJ/yr, 7900 Kg oil equivalent
2.4 KWH/day = 875 KWH/yr = 67 Kg gasoline/yr - 22Kg/work year
Gasoline 48 MJ/Kg = 13 KWH
Ethanol - 24 MJ/Kg
Lead acid battery - 0.108 MJ/Kg
Lithium ion battery - 0.5 MJ/Kg
NiMH battery - 0.3 MJ/Kg
U-235 - 7.7 E7 MJ/Kg
Capacitor - 2.5KJ/Kg
Metal-air batteries