[adrian_b]

Like others have pointed, you have made a mistake in your computation. The currents that are required are only of hundreds of amps and the latest chargers can provide up to 1000 A.

Also like others have said, it does not matter how fast you charge a car, the total energy consumption is the same, so fast chargers do not require changes in the power supply of a charging station.

The fast chargers that enable this full charging in a few minutes have their own internal batteries, to enable them to pull only the average power from the electrical grid, not the peak power.

The new fast chargers that can achieve the times reported in TFA use a somewhat higher voltage than the older chargers, of 1000 V, to reduce the current.

[sandworm101]

Ya, i missed a 0, but chargers with batteries are irrelevant for charging stations by a highway like a modern gas station. They have a constant flow of vehicles. There will be no time for a buffer battery when the next customer is maybe 45 seconds behind the last.

A buffer battery may have a place for a home charger, but a constant-use commerical charger is a very different thing. Or think of a rental car stand at an airport, or a truck/buss depot. They will have a vehicle arriving every minute and every hour wasted charging is an hour less rental time.

[adrian_b]

A charging station must be supplied with a power determined by the number of cars it must charge during a given time interval, e.g. a day or an hour.

It does not matter if it charges 30 cars per hour by having 3 chargers that charge in 6 minutes (including connection/disconnection times) or by having 15 chargers that charge in 30 minutes.

So it is not the charging speed that matters, but the amount of electric vehicles that want to use a charging station.

The charging speed matters only for the car owners, as it determines the time they must spend at the charging station.

Normally, a charger that is 10 times faster is not 10 times more expensive, so faster chargers should also benefit the charging station owners, because they would need to invest less for servicing a given amount of traffic, by buying less chargers.

[sandworm101]

The faster the chargers the more cars can be charged per hour. Commercial vendors for "drive through" (as opposed to parked) will want the fastest chargers.