EVs won't overload the power grid, in fact they (and ice) can save it.
With California mandating all new cars be EVs by 2035, and other places doing the same, EV-skeptics argue the power grid can't handle this. This claim appeared again during the recent California heat wave that came close to overloading the California grid over a false report that the state asked EV drivers not to charge their cars. (In reality it just repeated the everyday policy to avoid charging from 4pm to 9pm on high usage days.)
But it turns out the grid has lots of spare power capacity for EVs, though it needs more energy capacity. But EVs are the perfect match for solar power and can help enable a renewable grid, combined with the slowly growing use of ice to store cooling energy to use later in the heat of the day. Forget lithium, water is the cheapest energy storage medium you'll ever get. (Real ice, not Internal Combustion Engine ICE.)