I currently only track energy for my washer and dryer using plugs they are both connected to. Actually real purpose of those was for automation of alerts when things were done however when the Energy area came into HA extra bonus. But that’s all I’m monitoring. I’ve looked at those devices that connect to the mains in the circuit box but am unsure if they provide real value. Isn’t that just going to give me a whole house we don’t know what is using what reading? Plus HA will also include what’s coming from the plugs on the washer and dryer in the totals so will show a higher energy usage than what is really being used.