[dragontamer]

Sometime in the next 10 years, we'll have "smart grid" systems which will coordinate high-load activities such as car charging, appliance usage, air conditioners and more.

"Smart grid" doesn't exist yet however. For now, people will plug in their vehicles... maybe synchronized after 8pm (or whenever "night-time" energy kicks in, to save a bit of $$$), and charge at 7kW from their 3-phase power unit for the next 2 or 3 hours.

The energy companies will see this as a big spike at 8pm when the car-charger timers automatically go off, and then the energy usage will let off by 12-midnight or so.