I use Sonoff S31 smart plugs, flashed with Tasmota and connected to Home Assistant. It allows fine-grain monitoring of anything that plugs in to the wall, even if you disable the remote on/on switch (like for the fridge/deep freeze). LED bulbs use basically nothing and so can be removed from the equation, then all that’s left is built-in temp/humidity/air units and car chargers (though most of those have great metrics built in)