I think people under-estimate the capacity of car batteries, or over-estimate their home power usage. I used about 300 kWh last month, or about 10 kWh per day.

I think people under-estimate the capacity of car batteries, or over-estimate their home power usage. I used about 300 kWh last month, or about 10 kWh per day. A Model S has an 85 kWh battery. I could run my entire house on it for 4 days and still have 150 miles of driving range.