Is it "simply" a cloud-connected pilot wire controller? I don't really see anything about what I understand about virtual power plants.

Also, why is a Linky meter necessary, shouldn't it work with any electricity meter?

On another note I don't understand how pilot wires aren't more widespread outside of France. I bought my radiators in France because I couldn't find here anything that would be easy to control, and anything controllable at all was 5 to 10 times as expensive.

I got it installed via engie less than a week ago. But I can only manage it through engie.

Do you know if I can manage it through my own Home Assistant instance?