I actually did some back of a napkin math with this. 72 GWh equals about 45 million liters of fuel assuming 5 miles/kWh and 30MPG. Thats about 18 olympic swimming pools. That sounds impressive but then I converted it to gas station equilevants. An average gas stations sells about 3 million liters of fuel a year (at least in Europe). So the entire Supercharger network equals about 180 gas stations in miles/kilometers enabled. A lot less than I would have though. Obviously ICE cars can't be charged at home though but still. There are bout 150k gas stations in the US alone.
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If you want really rough numbers that make more assumptions
From 9.5 months ago.
“But a source familiar with the data point confirmed to Electrek that t
he fleet surpassed 9 billion total miles in September and at the time, Tesla drivers averaged almost 20 million miles per day – close to 4 times the average from just 2 years ago.”
So, 20,000,000 miles per day 9.5 months ago.
Make a rough guess and say 25,000,000 miles per day(or higher)(lets say 28 for ease of division)
Rough guess 7,000,000 kWh/day figuring between 3.5 - 4 miles per kWh
Roughly 7-9 gigawatt hours / day or roughly 230 - 270 gigawatt hours in a 30 day month.
(Where’s that 3 dot thingy for “therefore”)
Therefore:
2/3 to 3/4 (or more) charging is _not_ done at super chargers
(curious if anybody does 8 or 12 amp at 110v)
(knew an S60 that used an extension cord out window at 110v years ago at Rehoboth beach Delaware, USA as he parked it for 2-3 days since beach town)
SO you should multiply by at least 4 the number of Olympic swimming pools full of fuel not used., and ~720 gas stations like where I get peanut M&M’s (nom nom nom)