Hopefully one day power demanded from power plants would actually be highest at night, rather than during the day as it is now

See winter in many locations, especially winter weekend nights.

6-7/8 PM is often a secondary or primary peak.  And I expect most PHEV & EV owners to come home, plug in and fix dinner (overriding or ignoring any time of day feature, missing on the Telsa BTW).  Thereby adding to the Peak & grid stress.

Time will, of course, tell.  But the current SUV owners are not likely to become model citizens when they go EV IMHO.

Best Hopes,

Alan

Keep in mind that most EV users WONT plug in every night in order to preserve and extend the lifetime of their batteries, unless recharging obstacles are overcome and we can recharge 10,000 times or more with no loss :P I would be willing to wager most EVs would be plugged in once every 4-5 days on average.