[Toymeister]

Here is a completely different angle: whole house energy monitoring.

Three models will identity which appliances are using how much electricity by percentage and kwh. Why this may be important is you can point the finger on what is costing you and then modify your behavior to save. Maybe the garage freezer isn't worth as much as it costs you maybe you didn't know leaving the ceiling fan on 24/7 costs you $8.72 a month. The apps will name the appliances. Who knew that it is a quarter cent to toast your bread?

If you knew your "always on" stuff was 18% of your bill you might identify what they are. You would be surprised how little your fridge cost. Point is information is power.

One of these cost about 300.00 One is a European brand that I don't recall, Neurio (Amazon) and Sense (direct sales from website)

Edit to add: it does tell you how much heating, ac, water heater, and the dryer cost to the penny.