Given an on-the-grid, non-solar house, is it more energy efficient to charge your phone in your house or in your car? If there would be a difference for gas-powered and electric vehicles, please explain that as well.
In: Technology
It won’t make much difference, but the most efficient would be charging from the house. The large-scale nature of power generation like that means there’s less overhead per watt generated. Second would be charging from the electric car, because it’s being charged by the grid, and is providing voltage directly.
The worst would be charging from a gas car, because 70% of the energy in the fuel is wasted as heat. They’re horrifically inefficient. Of course, any heat engine will suffer from this (including the power plant), but a car is less efficient than that even.
It would take a *lot* of charging to notice any difference in cost.
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