The grid upgrade can cost millions for a DC fast charging station.
The inverter to make the DC power can cost 100,000.
Why not skip all this and have a diesel engine coupled to a 400V DC generator, thereby skipping the inverter and grid upgrade?
I think this would be cheaper, and lower capex and operational costs. Not to mention, most streets have natural gas lines which could power the diesel engines with a cheap and clean burning fuel. Natural Gas is very cheap around 4c/kwh. A 20% efficient generator, would yield 16c/kwh.
If this was economically feasible people would do it. It’s waaaay easier formPower plants to add a bazillion watts of capacity in normal places. What you’re describing does exist and has been done on remote areas, but those areas lack demand to do this often. With the exception of extreme weather events like heat waves there is plenty of capacity. And what you’re describing would not be economically feasible if you’re just trying to cover the exceptions.
Don’t fall for the propaganda. There is plenty of power, we are not running out. As more grid scale batteries come online and we change from a generate the exact amount we can use model this problem will be alleviated in the near future.