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Old 04-27-2009, 12:05 PM   #17 (permalink)
Ernie Rogers
Ernie Rogers
Join Date: Feb 2008
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Oh, I had overlooked your message earlier, Robert,

Excellent post, thank you.

Ernie Rogers

Originally Posted by RobertSmalls View Post
There's a good discussion of this topic on Wikipedia, at Miles per gallon of gasoline equivalent - Wikipedia, the free encyclopedia
You could make a case for heat-equivalent, extractable energy equivalent, dollar-equivalent, or CO2-equivalent methods for comparing gas to electric. I'm inclined to favor CO2 methods, using the average US carbon intensity of electricty, which I think is .6kgCO2/KWh. With gasoline at 2.421kgCO2/gal, you have 4KWh/gal.

So I'd say Ryland is getting 14mpg(CO2equiv, US average electric mix).

As I've said in other threads, electric cars don't reduce CO2 emissions by themselves. Low-carbon electric generation is required.
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