Yep. This is the missing piece: the grid is going to get a whole lot smarter. There is big money to make for the companies that move into this space. It's just getting started.If they don’t already, wall chargers could monitor load on the grid, and reduce charging rate or even pause charging for a period to collectively manage the load.
Also if my iPhone is smart enough to delay charging to reduce the time that it spends full charged (to improve it’s lifespan) then surely a car could do the same.
It uses artificial intelligence to predict when my iPhone will be disconnected from the charger and only charges it to 100% shortly beforehand, and not as soon as possible.
Combined with data from the grid, the same technology could be used to actively manage the load on the local and national electricity infrastructure.