I would really like to know how much energy each of my home devices is consuming in real time. .
How about building a "smart" socket(s) that can transmit to a mobile app (via wi-fi)or a mobile device within a Bluetooth range the consumption of each device connected to it. It will be really useful information to know so you can turn off some of the devices you don't need. They consume energy even on stand by. The app should also have statistics for past usage, weekly/monthly usage