I used to work closely to this on whole home energy disaggregation. There are products for doing this, but the value is very limited.
Excluding EVs, heating and cooling is the largest factor for energy consumption followed by other large appliances. Small appliances and electronics don’t use much electricity or aren’t on long enough to matter.
If you’re interested in some product recommendations, the Sense Energy Monitor used to be a popular choice. Basically it is a set of clamps that you can attach at your breakers to monitor specific circuits. It’s good for monitoring large appliances with their own dedicated circuit. For individual appliances, a Kilowatt Meter works fine. If you want something for continuous monitoring long term, I’d look at the Eve Smart Outlet.
I have a Sense Energy Monitor. It works pretty well, but I wish they made their own smart outlets to integrate with the panel monitoring.
Anyways, some pretty clear trends emerge when tracking your energy usage. Climate control (heating, cooling, fans, dehumidifier) dominates my energy usage, then EV charging, the kitchen stuff (refrigerator, cooking, dishwasher), then electronics (and I have a ridiculous amount of them), clothes dryer and lighting. I would like more insights into my electronics for personal curiosity (which Sense can't seem to do), but in the scheme of things it probably doesn't matter. No individual electronic device is going to make much of a difference.
Excluding EVs, heating and cooling is the largest factor for energy consumption followed by other large appliances. Small appliances and electronics don’t use much electricity or aren’t on long enough to matter.
If you’re interested in some product recommendations, the Sense Energy Monitor used to be a popular choice. Basically it is a set of clamps that you can attach at your breakers to monitor specific circuits. It’s good for monitoring large appliances with their own dedicated circuit. For individual appliances, a Kilowatt Meter works fine. If you want something for continuous monitoring long term, I’d look at the Eve Smart Outlet.