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To expand upon Nathan Kaemingk's answer and put some numbers to it from a vehicle perspective:

Consider the Tesla Model S, which has an available 85kWh battery and a 265 mile range.

Consider a similar gas-powered car, which gets 35 mpg.

Gasoline contains about 33kwh of energy per gallon.

The Tesla uses 320 Wh/mile of energy (85kWh/265 miles)

The gas powered car uses 940 Wh/mile of energy (33kWh/35 miles)

Once the energy is onboard (not counting the efficiency of the power generation, oil refining, or charging), the Tesla is using only about a third as much energy as the comparable gasoline-powered car.

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