Hi. I have just added a Aqara Smart Plug to Raspberry 4 based Home Assistant installation running 2022.4.0 via Conbee II stick and deCONZ integration, and started dipping my toe to Energy related topic. Very interesting!
The smart plug is connected to washing machine, which takes 2200W max. The plug gets a switch and three sensors (power, consumption, temperature) created in HA. In Developer → Template view I can see that for consumption
- sensor device_class = energy,
- unit_of_measurement = kWh, and
- state_class =total_increasing
which I guess is a basic requirement. All good?
I turned washing machine on and started to look at dashboard data. On the right the kWh figures seem to be cumulative (which I expected) and W figures make sense as well, but sensor values on the left (1st and 2nd) seem to show zero all the time. Or maybe just momentarily show something else.
Where it gets even more odd is when I take a look at the Energy view, which after an hour tells that this washing machine has used 20 kWh, where the cumulative value from sensor tells that it took total of 1.1 kWh.
After another hour it shows 30 kWh, then 40 kWh - just as it was treating the sensor in a wrong way.
Have I done something wrong or is this an integration issue or HA bug. Ideas?