On Home Assistant restart, Kaco integration adds a second entity for every entity

[DennisZschoppe]

Configuration

Kaco Integration Version: 0.6.1
Home Assistant version: 2025.12.5
PV Inverter: KACO Powador 10.0 TL3 - Software Version: V3.32

Describe the bug

I just found this integration to integrate my Kaco Powador inverter to home assistant.
After setting the inverter up everything worked fine for the moment.
After restarting Home Assistant it added a second entity for every entity and marked the old one as unavailable.
For example, for "pv_inverter_current_power" it adds a "pv_inverter_current_power_2"
It seems that the Entity ID generation is delivering incorrect values on a restart, so HA is not able to map the entities to the original ones.
This may be related to my old Powador not being the fastest on the web interface.

Possible solution

The RASBR fork (https://github.com/RASBR/home-assistant-kaco) seems to have tackled this issue by adding Parameters to the device setup for serial number and mac address. So, it does not need to scrape that info from the device.

Thanks,
Dennis

[rfpronk]

I'm experiencing the same issue after the last AI refactored update

[KoljaWindeler]

yes, me too .. super annoying .. i guess a bigger rework is needed here .. any volunteers? :)

[rfpronk]

After removing all the original entities. Restart HA. Then trash the _2 entities. Restart HA. Now it seems stable for me on the original (without _2) entity names.

Manually renaming _2 to the original ones without the _2 suffix didn't work; after a restart it would flip again.

[mickeyreg]

Possible solution

The RASBR fork (https://github.com/RASBR/home-assistant-kaco) seems to have tackled this issue by adding Parameters to the device setup for serial number and mac address. So, it does not need to scrape that info from the device.

The above may actually be the solution, because in my configuration I sometimes see:

blueplanet 6.5 TL3
manufacturer: Kaco

and sometimes an unknown device with no name or manufacturer.

My workaround is as follows:

I also had soemething like: "pv_inverter_current_power" and "pv_inverter_current_power_2". I reneamed the first one to "pv_inverter_current_power_1" and made a helper in HA - the template sensor with code:

{{ states('sensor.pv_inverter_current_power_1') | float(0) + states('sensor.pv_inverter_current_power_2') | float(0) }}

Always only one of the above works, so my sensor.pv_inverter_current_power is always available.

[cofade]

Hit this exact issue on my Powador 10.0 TL3. Every cold start where the inverter wasn't reachable yet (boot race condition) created a new /\ entity. Fixed it by assigning \ once in \ from the last IP octet rather than from runtime data. Stable ever since. Hoping #24 gets merged.