Lovelace: Power wheel card

yes, I’ve thought about saving these values. Might be better to have the CC variable do that? Custom component to declare/set variables

it can store several historic data, maybe easier? I use it in various other places and it works beautifully.

could you share your input_number setup? I don’t have that yet.

still, I am a bit surprised your DSMR doesn’t support this, aren’t that industry standardized configurations?