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I charge my 2014 Model S 85 in my garage at our condo through a 110 outlet. I’m retired so trickle charge is fine for me. My condo association wants to put a parking space outside for electric vehicles to charge. How do I show them how much it costs to charge my car? There is no separate meter for my garage. The homeowners association pays electricity for all garage electricity. They think my car charging is costing everyone more money.
120 Volt Charging is necessarily less efficient., there is just much less amperage available and therefore the Charge Cycle will be much longer.
If you have a 10 watt bulb in a lamp and you burn it 100 hours you have used one kilowatt of power. If you have a 100 watt bulb in a lamp and you run it 10 hours you will have used 1 kilowatt of power. If you put 50 kilowatts in to a Telsa, if it takes 5 hours or 50 hours for the charge, it is still 50 kilowatts which in my area is about $5.50 USD. Some Chargers on the road by the minute. But at home you pay per kilowatt...
Then the article is so... wrong!!!
My 2020 AWD LR Model Y has a range of 316 miles on a 74 Kw battery (74,000 Watt). 74,000 watts divided by 316 miles is an average of 234.2 Wh/mile. On some of my highway trips (staying at a speed limit of 65 mph) I average 266 Wh/per mile. Which is even a greater total range.
If you have a Model S that has a range of 390 miles with a 100 Kw battery that is 390 Wh/mile. If you divide 266 by 390 you get 68%. It cost 68% as much per mile to drive a Model Y as a Model S. So, for every $1.00 of electricity the Model S uses the Model Y will only use $0.68...
Someone who wrote the article needs to go back to school....
If you drive a Model Y 10 miles per day without Jackrabbit starts, you would use 2,660 watts (or 2.66 Kw) with your electric cost being about $0.10/KwH you would be at about $0.26 per day. Since the charge system is only about 90% efficient, you would be at about $0.29/day or $3.00/month.... This would not take into account power used if you pre-heat or cool the car, or sit in it playing games...