I imagine the electric vehicle charging could be time-shifted to overnight. Between 10pm and 6am Also, energy for water heaters and home heating vary a bit acr

I imagine the electric vehicle charging could be time-shifted to overnight. Between 10pm and 6am Also, energy for water heaters and home heating vary a bit across the country. Electricity is more common in some parts than in others. Even in places that are overwhelmingly gas or propane fueled, the 10% of systems that are electrically powered represent a small but significant opportunity to time-shift demand. A/C is definitely the largest culprit here, though. And precooling does work if you lower the temperature of the interior thermal mass of the house. I used to do it when I was subject to random 4-hour A/C shutoffs as part of my discount plan. If I got the house down to 66˚F before the shutoff occurred, the house would remain comfortable for a couple hours. I may have used an overall larger amount of power to do this, but it was the "right" power: drawn from neighbors' solar rather than generating plants.