Actually picked that one as the first result in a search I did for smart MCBs… I have no particular preference for which product might be eligible, just awareness that charging EVs has to be the best use-case for Equiwatt, but many older charge-points would require replacement to participate.
An EV on a domestic charge-point is of course using something between 3.7kW and 7.3kW, beating fridges and freezers as a source of “virtual power” by a wide margin - think my freezer is 60W when the compressor is running. EVs can be disconnected almost without consequence, unlike some washing machines or dryers, which will need reset if the power goes out. As long as the EV battery is not nearly flat, shutting it off for up to an hour will not inconvenience anyone or cause damage to food in fridges etc.
The breaker looks expensive though, maybe need a large uptick in volume to get the cost down before it would be widely adopted. (I’d probably give one a try, even at the current price, if it became supported.)