As the digital communication over the power lines becomes more installed, I am sure that chargers will become smart enough to wait until a signal from the PoCo to start charging. They could even go to a cell phone model where the vehicle charger won't turn on until an account number is given to the power company.

If it will only take 90 minutes, I don't care if the car charges at 7 PM or 3 AM. If I get a discount from the utility to charge my vehicle after 10 PM, I would pay for a smarter charger.

Larry