"If two people in a household are commuting 135km/day each for 20 days/month in a Tesla Model S, electrical energy consumption of the household doubles." This

"If two people in a household are commuting 135km/day each for 20 days/month in a Tesla Model S, electrical energy consumption of the household doubles." This is a big problem if everybody wants to charge at peak times. But most people charge overnight. Smart chargers and smart grids will ensure that loads get balanced and there isn't a huge spike in demand at 7PM when everyone plugs in as they get home from work. In a future where grids are supplied largely by renewables and nuclear, EVs will benefit the grid by soaking up excess supply at off-peak times. When they're plugged in, they're effectively storage batteries on wheels.