Total kWh production needed for EV / local peak sun hours = size of ideal solar system (in kW) Convert the solar panel wattage of the brand of choice to kilowatts by dividing by 1,000.

In practice, here's what that could look like: Let's say the total system cost for your home is $25,000. You know you qualify for $10,000 in incentives, so now the net cost is $15,000. You also ...