Electric prices in the US vary from around $0.07 per kw-h to over $0.20 per kw-h, so charging cost will vary that much too.
For the largest Model S battery (100 kw-h), the math is real easy, ~$7 to ~$20. They say 300 miles range for that battery.
For the largest Model S battery (100 kw-h), the math is real easy, ~$7 to ~$20. They say 300 miles range for that battery.
I think using what is basically a penalty rate that an electric vehicle owner agrees to in order to get cheap overnight rates as the max would also be a mistake. Those customers pay ~$0.12 to charge overnight.
http://teslaliving.net/2014/07/07/measuring-ev-charging-effi...
(bumps the numbers to ~$8 and ~$24)