(Nested) groups: Energy way too high (especially after restart of HA)

I have nested groups configured like this (shortened):

powercalc:
  enable_autodiscovery: false
  scan_interval: 00:10:00
  create_energy_sensors: true
  create_utility_meters: true

sensor:
  # actual total consumption
  - platform: powercalc
    entity_id: switch.shelly_3em
    power_sensor_id: sensor.shelly_3em_power_total
    energy_sensor_id: sensor.shelly_3em_energy_total

  - platform: powercalc
    create_group: Haus
    entities:

      - create_group: Wohnzimmer
        entities:
          # ...

      - create_group: Küche
        entities:
          # ...

      - create_group: Badezimmer
        entities:
          # ...

      - create_group: Schlafzimmer
        entities:
          # ...

      - create_group: Arbeitszimmer
        entities:
          # ...

      - create_group: Flur
        entities:
          # ...

Power and energy sensors for the single devices are working as expected but something is wrong with the group sensors: Power seems to be OK but the group energy sensors are way too high. Especially a restart of HA makes things worse:

Before restart:

After restart:

“Shelly 3EM” is the actual total consumption of my home. “Tuya Server” and “Kaffeemaschine” are two of my single devices.

Already checking debug logs but can’t find anything suspicious.

[bramstroker]

With your latest changes to master I have only one entry for sensor.flur_energy:

Perfect, that’s as expected

Utility meters also look good now! 😃

Nice

Regarding warnings I see a lot of State value of grouped energy sensor may never be lower than last value, skipping. [...]

Only after restart right? Than you can safely ignore this warning.

Thanks for your work and enjoy the coffee!! 😉

Thanks

[chbartsch]

So I think the current approach for the group energy sensor is error prone and should be changed. The right approach would be to let powercalc just create an riemann integral sensor for the sensor.group_power which will just integrate the group total power to kWh over time. This would be a big change/refactor so I first need to know if this solves the issue for you guys. You can try this yourself by creating this sensor from the GUI. “Configuration” -> “Devices & Services” -> “Helpers” and than select the option as indicated in the screenshot below.

After that you can also create a utility meter for this energy sensor from the same screen. Leave it running for a few days and lets see if this improves things.

Hey, I was on vacation and lost track of this topic…

I have your suggested “manual” energy and utility meter sensors up and running for a few days now and results are looking good. Even on reboot and stuff. 👍