[RedDevil]

Incorrect would be more to the point.
The fixed part of the bill is there whether you charge an EV or not.
Only the cost of the extra kWh should be counted.

Take this example.
Suppose you have solar panels and produce the same amount of electricity with them as you use; so the net use is zero.
You have to pay the service fee of $17 a month though, just for being connected to the grid (and have power at night). That's your bill for electrifying the house.

Now you buy an EV and charge it. All the net energy use goes into the car.
It may seem reasonable that you'd put the service bill full on the car than in your equasion, but that means that the cost for the house part is then nil!