Alternate numbers: typical home solar installation delivers 10-15 kWh per day. Tesla model 3 has 50kWh battery and 220 mile range.
15kWh * (220 miles / 50 kWh) = 60 miles of charge a day.
If your commute is less than 30 miles each way you don't touch the grid to charge. Of course if you plan on getting or have an electric car you can always get a larger system.
