I have recently started monitoring our home’s electrical consumption on a very granular level. When we went away for a week and came back, I realized that our house was, just by existing, using an average of 4 KWH per day. That’s actually a lot although I’ve not come up with a good analogy. So, I started thinking about whether I should have shut off our hot water tank or unplugged the appliances, etc. I ended up on this page which has 10 really good items including my own. Hope it’s useful to you as well.