And consider that there are efficiency losses every time energy is changed. That is, a diesel-electric
generator operates at less than 100% efficiency. Then a battery does not store electricity at 100% efficiency. Finally, an electric vehicle also is less than 100% efficient in turning the battery power into moving the car.
So all these losses in efficiency are stacked up and leads to a vehicle that is far less efficient than a vehicle that just runs off a diesel engine directly.
And consider that there are efficiency losses every time energy is changed. That is, a diesel-electric generator operates at less than 100% efficiency. Then a battery does not store electricity at 100% efficiency. Finally, an electric vehicle also is less than 100% efficient in turning the battery power into moving the car.
So all these losses in efficiency are stacked up and leads to a vehicle that is far less efficient than a vehicle that just runs off a diesel engine directly.
Add the resistance loss in the transmission lines to your equation as well.
Im also guessing "transmitting" gas via truck causes less losses per unit energy than transmission losses over cables.