If you understand MPGe, you can probably stop reading now.
1 gallon of gas will generate 115,000 BTU's. It takes 33.7KWH to create the equivalent energy. So MPGe is the number of miles a car is expected to travel on 33.7KWH. Using this fact, I played around with a couple numbers.
The i4 has an 81KWH battery which would be equivalent to a 2.4 gallon tank (assuming one could convert the entire 2.4 gallons directly into electricity.) It would cost me $12.07 to fill up the i4 assuming todays average US premium gas price $5.03.
To charge at home at $0.11/KWH means I'm paying an equivalent gas price of $3.71/gl. But if I am using a DC charger costing $0.45/KWH, I would be paying the equivalent of $15.17/gl. It would cost me $8.90 total at home and $36.41 at the fast charger.
If I use a L2 32amp charger for an hour, I will get about 7.7KWH or less than a quart of gas in equivalency. I think this is particularly effective against that free charge/free gas argument. You can get your gas at a rate of about .5 ounces/minute. It would be even less if adjusted for the cost of electricity vs cost of gas. The gas price should also include the storage and distribution costs which are built into the electricity cost.
1 gallon of gas will generate 115,000 BTU's. It takes 33.7KWH to create the equivalent energy. So MPGe is the number of miles a car is expected to travel on 33.7KWH. Using this fact, I played around with a couple numbers.
The i4 has an 81KWH battery which would be equivalent to a 2.4 gallon tank (assuming one could convert the entire 2.4 gallons directly into electricity.) It would cost me $12.07 to fill up the i4 assuming todays average US premium gas price $5.03.
To charge at home at $0.11/KWH means I'm paying an equivalent gas price of $3.71/gl. But if I am using a DC charger costing $0.45/KWH, I would be paying the equivalent of $15.17/gl. It would cost me $8.90 total at home and $36.41 at the fast charger.
If I use a L2 32amp charger for an hour, I will get about 7.7KWH or less than a quart of gas in equivalency. I think this is particularly effective against that free charge/free gas argument. You can get your gas at a rate of about .5 ounces/minute. It would be even less if adjusted for the cost of electricity vs cost of gas. The gas price should also include the storage and distribution costs which are built into the electricity cost.
