I live in a cold climate and so my apartment stall is electrified in order to run a block heater. The way that it works here is that I am charged for power usage off of that stall outlet, but my unit has a breaker that allows me to turn it off and on. I think charging ports could operate similarly, hopefully offering some kind of smarter scheduling that allows you to only have it active when your car is in the stall and needs charging.