[Syngas]

Take a look at the Youtube Channel "State of Charge", It is focused on EV chargers and EVs, including the infamous NOX.
They have discussed this type of charger in some detail. They do work, they appear to be cost effective, and there are several options, depending on where you live. And when they cut back power, they do it by modulating the EVSE (charger). We have a chargepoint flex which can be set to charge our NOX at various reduced rates. I have ours dialed down from 48 to 20 amps, for example.