I would think, it would depend on the useage. Electric ranges operate on 220vac, and are on a 30 amp breaker. Natural gas ranges need no electric, except for spark ignition, and the light in the oven. If they were used at comparibly the same rate, The electric range would cost you more.

The gas range will always be cheaper than electric at todays prices, especially in California where you guys get raped and have the great governor Gray watching out for you. Note the sarcasm. It won't be cheap enough to justify replacing a perfectly good electric range in favor of a gas range. Secondly your apartment may not be plumbed for natural gas.

I have not seen studies on ranges, but the American Gas Association website shows a study where gas water heaters are twice as efficient dollar for dollar than electric.

Thanks. I'm moving in in 2 days and I'm hoping my electric bill for the first month dowsn't go off the roof.