For one example, Electrify America is $4/month + $0.36/kWh. (You can pay the $4 and immediately cancel, before a road trip.) Assuming 4 miles/kWh, that's $36 t

For one example, Electrify America is $4/month + $0.36/kWh. (You can pay the $4 and immediately cancel, before a road trip.) Assuming 4 miles/kWh, that's $36 to drive 400 miles. Charging at home cuts the cost roughly in half. These numbers vary depending on location.