Oh I see, so this does not include the cost of electricity. What are your costs for both gasoline and electricity?
I commute about 100 miles per day 5 days a week and calculate my savings to be about 121/month (1456/year) in switching from gasoline to electric. There are many variables to consider so I made a spreadsheet to attempt to estimate this.
In my case I used the following assumptions based on local pricing and estimated vehicle performances:
Cost of gasoline 3.00/gal,
Cost of electricity 0.11/kWh,
ICE MPG 35,
Tesla Watts/Mile 270.
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