A month ago, I bought a 2020 Bolt. I am using only a 120 volt outlet for now. My state has an incentive for installing a L2 charger for customers (I own a marina and also live here) but the grant is only available in the fall and is not retroactive. Actually 120 is fine for me in that my usual trip is 45 miles round trip every couple of days. That's called retired. I live in Nebraska and it is somewhat cold now, so I leave the Bolt plugged in constantly, even though it may have a full charge. My problem is that my electricity bill for this past month is 50% higher even though the average temperature was 10 degrees higher than the previous month. Do I need to charge it and then unplug it once it is full. Selecting a departure time is difficult since I tend to go on a whim not a schedule.