Submitted by Mitchell Waite on September 16, 2013
I'm trying to calculate for a Model S P85 the MPG equivalent (MPGe), the cost per mile of driving and how much it costs to fill the battery 100%. The goal here is to compare it to the cost using gas.
My calculations are like this:
Current Max distance with full charge = 265 miles (there seems to be different values for this in the forum)
Maximum charge = 85 Watts
Cost of electricity in SF Bay area, California (using PG&E cost calculator http://www.pge.com/myhome/myaccount/charges/ and Tier 4@34 cents per kWh and 84 kWh) = $29
$29 / 265 = .109 = 11 cents per mile
265 / $29 = 9.13 = 9 miles per dollar
I thought about using this link to figure out the Tesla Model S MPG3 but its too complicated
Anyone have some simple way to do this calculation or a web site that will do it?