[zeestephen]

Re: "12,000 watts per gallon." - "We know that the author of the above failed 9th grade science!""

I thought E=MC(sq) means energy and mass are the same thing?

Any mass can also be expressed in terms of electrical energy or heat.

Is that not correct?

[Jonty30]

The figure I use is an equivalent across the board of energy sources. Lithium is about 6% as effective as gasoline, in terms of its ability to store energy. Wind is something like 1 trillionth as effective as a gallon of gas and solar is only a bit better than wind.

Nothing, except nuclear, can beat hydrocarbons. It’s just that there is more need for copper, to electrify society than there is copper.

[Reynoldo]

E=MC ² applies to the amount of energy gained by obliterating mass.
This would be the result of fusion of the atoms involved which leaves you with less mass than you started with. Not the energy release by burning fuel.

[TexasGator]

Watts is not energy. It is power.

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I thought E=MC(sq) means energy and mass are the same thing?

Any mass can also be expressed in terms of electrical energy or heat.

Is that not correct?”

Yes, but your Calc is nonsensical.