Electric vehicles/energy

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Suppose all vehicles were a certain type, how much energy would be needed worldwide?

Vehicle type Powering the vehicles Manufacturing the vehicles
Battery electric vehicles 1.08 terawatts Status quo + 0.15 terawatts
Fuel cell vehicles 2.30 terawatts unknown
Status quo, for comparison
(fossil fuel vehicles, mostly)
3.38 terawatts equivalent
fuel energy consumption

- Wattages are total energy consumption divided by time. Not peak power.

A mix of vehicle types is a likely scenario - so expect the wattage to be somewhere in between.

Rooftop solar could provide more than enough energy for this, but only if there's a solution to solar/challenge 1.

The numbers come from: Calc:If all vehicles were electric