That's the bottleneck though, isn't it? (Assuming all the rest is 100% true.) Where's the infrastructure to provide 3 MW chargers all over the place? 6 to 10 charging bays at one station = 18 - 30 MW. That's a lot.
CATL is deploying 1MW which is the 4 min charge in a sedan semi trucks are the 1-3MW it’s a different plug type. Much larger obviously.
The Chinese GBT standard plug does 1MW by design as is they have 800-1000V standards not the 450 Tesla uses cept Cyber truck which is a 800V architecture.
They have ISO container sized megapacks next too their MW chargers BYD and CATL both make them in 10-14.5 MWh sizes to a standard 20ft map box.
One iso box handles 4 stalls which at 10 foot standard lane widths is two on each long side of the box
4 min charges is theoretically 15 per hour per stall but you have to move and plug times so 10 is probably a reasonable number.
40 megawatt minutes per stall per hour. It works out to 2.66MWh over the 4 stalls or 66.6kWh per EV which is 70% of a 95kWh pack or what it would take to go from 10% to 80% in 4 min at a megawatt in a 95kWh sized pack.
How many 4 min charges are in a 14.5MWh megapack... 217 @ 4 min and 1 MW
This assumes zero taken from the grid during those sessions. If we limit charging the megapack to just off peak times a 12 hour window you need a 1.2MW grid tie this is 100 amps at a typical T&D 12,000v local distribution line , near major office parks you will have 32,000v lines. 100 amps at 12kv is single phase all T&D is triple phase so you would have three 12,000v lines and need 36 amps from each for a 1.2MW load to fill you megapack off peak.
Two megapacks holds 434 x 4 min charging opportunities or 11 hours of 4 stalls charging 10 per hour an avg of 6 min per cycle with one min to pull in plug and one min to pull plug and out. CC card or app charge negotiating is in those one min blocks too. Probably generous in 10 per hour.
China already does this they have mega packs right next to their GBT hyper fast chargers. Their grid is a triple phase system with 400v 3p to individual homes and condos the 240v is phase to neutral and 400v phase to phase in a Y set up, it’s brilliant. The GBT plug also supports 3p so even AC charging is fast there. 22kw @400v 3P is the GBT standard plug. That’s 88 charge mi per hour. Their avg distance is less than our 40 too it’s equal to 13 miles when converted from km. It takes 8.86 min to put 13 miles in a Model 3 sized EV at 22kw 3p 400v rates. There is a reason why NEV are more than 50% of all sales in China now. They saturated the urban areas with L2 and now rolling out hyper fast for longer trips. If you go to a city all the condos have L2 poles along the outside spaces and also along the walls in the parking decks they are ubiquitous now all of them are 3p GBT standard. Private home ownership is rising fast but Shanghai is like 95% condos and apartments yet 50% are EVs because L2 is everywhere and power is cheap compared to gasoline 1/10 it’s cost per mile.