First: love the car - this is not intended to indicate it is anything but a game-changer (I posted compiled shipment numbers showing how game-changing here), the watt-hours-per-mile indicator in the car does NOT really tell you how much electricity you will need from your grid/solar connection.
I ran calculations that take into account both charger efficiency and vampire (parked) energy use and came up with numbers more like 75% overall efficiency. I've included a snapshot of the calculations below and you can download the Excel spreadsheet from http://EVTripPlanner.com/TeslaOperations.xlsx (has a lot of other stuff, too).
I ran calculations that take into account both charger efficiency and vampire (parked) energy use and came up with numbers more like 75% overall efficiency. I've included a snapshot of the calculations below and you can download the Excel spreadsheet from http://EVTripPlanner.com/TeslaOperations.xlsx (has a lot of other stuff, too).
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