The biggest factor is how much of the EV charging can be done at algorithmically controlled times. If the load can be computer controlled to exactly fit the su

The biggest factor is how much of the EV charging can be done at algorithmically controlled times. If the load can be computer controlled to exactly fit the supply curve, the electricity becomes extremely cheap to provide. If that same load can basically instantly switch from charging, to paused, to discharging we end up with an extremely smart and efficient grid that can very effectively utilize high variance generation sources.