Hi everybody,
if you use tasmota on devices capable of metering energy consumption, you can use decluttering-card to make a simple template for displaying each devices readings. I am sure this can be done better, but thought I’d share my approach anyway.
All the code is my github repo, below an example screenshot. The customization on github will use English instead of German, so don’t be put off by the screenshot 
This will only work with tasmota devices as far as I know, because everything is based on a sensor.<name>_energy_<value> template, which is created when you auto-discover these devices. Other devices (or not auto-discovered tasmota devices) might not work with this.
Hopefully this is helpful to somebody 