ITEM | SOURCE | Cost |
NETWORK ELECTRICTY | My 2007/02/06 PG&E bill | 0.032 $/MJ, or ~0.115 $/kWh (I use about 53kWh per month) |
Car gas (octane) | Wikipedia | 0.022 $/MJ, or ~0.08 $/kWh |
AAA duracell (Alkaline) | allaboutbatteries.com/Target.com | 221 $/MJ, or 800 $/kWh |
Alkaline batteries | allaboutbatteries.com | 53 $/MJ, or 190 $/kWh |
Lead-acid batteries | allaboutbatteries.com | 47 $/MJ, or 170 $/kWh |
Lithium-ion batteries | allaboutbatteries.com | 1186 $/MJ, or 4270 $/kWh |
NiCd batteries | allaboutbatteries.com | 417 $/MJ, or 1500 $/kWh |