Why was my public charging bill so high? / Cost-tracker auditing the true per-mile cost with a spreadsheet

Cost-tracker auditing the true per-mile cost with a spreadsheet

Three contributors reported normal use: an Ioniq 5 charging without issue, a per-minute stop that favored them, and a year of truck costs below gas.

What people actually reported
459 kWh for $71 per-minute vs $154 for 393 kWh
“I got 459 kWh for $71 there, while Colorado was billed per kWh and cost $154 for 393 kWh.”
@jason_riddle
47c/kWh Tesla charging works out to ~23c per mile
“My Lightning does a bit over 2 mi/kWh, so at the 47 cents my local Tesla charger charges that's around 23 cents a mile.”
@cory_baxter
Saw one EVgo station go from 49c to 69c in a day
“EVgo is all over the place on price... here in CT I've seen the same station be 49 cents at 6am and 69 cents at 5pm.”
@mdonnelly_
Nebraska per-minute: 459 kWh for $71; Colorado 393 kWh $154
“I got 459 kWh for $71 there, while Colorado was billed per kWh and cost $154 for 393 kWh.”
@jason_riddle
Works out to ~23¢/mi, nearly $16 per gallon-equivalent
“My Lightning does a bit over 2 mi/kWh, so at the 47 cents my local Tesla charger charges that's around 23 cents a mile. I converted it to a gallon equivalent at 34 kWh/gal and got almost $16, which looked so wrong I figured I'd botched something.”
@cory_baxter
Questions still raised in the forum