SUPERCHARGER
One of my first tests was to use a dash cam as a video recorder of SuperCharger sessions:
- > 60kW - it costs $0.26/min to charge
- =< 60 kW - it cost $0.13/min.
There is no advantage to carry extra miles to the next charger but you must reach the charger. By adjusting speed to maintain a minimum reserve miles, you can reach the next SuperCharger with 15-30 miles of reserve charge. This gives the fasted charge rate at a cost of ~$0.16/kWh, or ~$0.04/mi. Below 60 kW, the price goes from $0.13/kWh to much higher at slower rates but sometimes you need the range. Rule of thumb:
- ~16 minutes above 60 kW gives ~50% charge, ~120 miles
- ~70 minutes gives a 100% charge
Our charging protocol is my wife and I do a biology break and I leave her there for refreshments. I park at the SuperCharger and walk the dogs back to where the wife is. A short break and I return to the car and drive back to load the wife and dogs.
With gasoline costing ~$2.50/gal, the Model 3 SuperCharger costs return about 64-94 MPG depending on weather and use of AC or other accessories.
Bob Wilson