Homeassistant Switch Problems with no Power Entity

Question

Homeassistant Switch Problems with no Power Entity

Closed this issue 2 months ago · 16 comments

Describe the bug

When the homeassistant-switch charger template is configured, EVCC continuously issues unauthenticated requests to Home Assistant (GET /api/states/...) and logs a repeating 404: Not Found.
The component keeps polling, causing log spam and confusion. E

Configure a charger using the homeassistant-switch template.
Start EVCC with -l trace.
Observe repeated requests to Home Assistant and repeating 404 lines.

`chargers:

name: knx_steckdose
type: template
template: homeassistant-switch
baseurl: http://homeassistant.local:8123
token:
switchentity: switch.haustur_steckdose
standbypower: 15`

[ha-switch] TRACE 2025/09/16 23:27:44 GET http://homeassistant.local:8123/api/states/ [ha-switch] TRACE 2025/09/16 23:27:44 404: Not Found [ha-switch] TRACE 2025/09/16 23:27:44 GET http://homeassistant.local:8123/api/states/ [ha-switch] TRACE 2025/09/16 23:27:44 404: Not Found (repeats…)

Steps to reproduce

Configure a charger using the homeassistant-switch template.
Start EVCC with -l trace.
Observe repeated requests to Home Assistant and repeating 404 lines.

...

Configuration details

chargers:
  - name: knx_steckdose
    type: template
    template: homeassistant-switch
    baseurl: http://homeassistant.local:8123
    token: <token>
    switchentity: switch.haustur_steckdose
    standbypower: 15

Log details

[ha-switch] TRACE 2025/09/16 23:27:44 GET http://homeassistant.local:8123/api/states/
[ha-switch] TRACE 2025/09/16 23:27:44 404: Not Found
[ha-switch] TRACE 2025/09/16 23:27:44 GET http://homeassistant.local:8123/api/states/
[ha-switch] TRACE 2025/09/16 23:27:44 404: Not Found
(repeats…)

What type of operating system or environment does evcc run on?

HomeAssistant Add-on

External automation

I have made sure that no external automation like HomeAssistant or Node-RED is active or accessing any of the mentioned devices when this issue occurs.

Nightly build

I have verified that the issue is reproducible with the latest nightly build

Version

No response

Answer 1 · 2025-09-17T05:03:10.000Z

Yes the Long lived token is required :-) expected behavior even when running as ha addon

Answer 2 · 2025-09-17T06:22:14.000Z

Token is installed.

Answer 3 · 2025-09-17T06:25:28.000Z

If it is working close the issue if not update information since original issue was " without providing token."

Answer 4 · 2025-09-17T06:28:12.000Z

Sorry, that was wrong.

Answer 5 · 2025-09-17T06:36:48.000Z

you might need quotes around the token..

Answer 6 · 2025-09-17T06:47:47.000Z

I configured an HA switch in the ui... and see the same 404 when testing the switch...

Answer 7 · 2025-09-17T07:15:23.000Z

it is getting the Information but also seems to do 2 other calls to states

[ha-switch] TRACE 2025/09/17 09:12:04 GET http://10.100.1.2:8123/api/states/
[ha-switch] TRACE 2025/09/17 09:12:04 404: Not Found
[ha-switch] TRACE 2025/09/17 09:12:04 GET http://10.100.1.2:8123/api/states/
[ha-switch] TRACE 2025/09/17 09:12:04 404: Not Found
[ha-switch] TRACE 2025/09/17 09:12:04 GET http://10.100.1.2:8123/api/states/input_boolean.test
[ha-switch] TRACE 2025/09/17 09:12:04 {"entity_id":"input_boolean.test","state":"on","attributes":{"editable":true,"friendly_name":"Test"},"last_changed":"2025-09-17T07:02:55.810278+00:00","last_reported":"2025-09-17T07:02:55.810278+00:00","last_updated":"2025-09-17T07:02:55.810278+00:00","context":{"id":"01K5B7QH229S8S7C4NS42W3FE0","parent_id":null,"user_id":null}}

Answer 8 · 2025-09-17T07:28:27.000Z

I guess it should query the powerEntity only if configured....

Answer 9 · 2025-09-17T07:30:20.000Z

@spuky indeed, it seems like it will poll the status no matter what. this may be related: #23312 (comment)

Answer 10 · 2025-09-17T07:32:21.000Z

and also provide success during config..
https://github.com/user-attachments/assets/d0720abf-ae53-4152-9336-9bf4997ac165

ok so gh does not show inline video :-(

Answer 11 · 2025-09-17T07:43:43.000Z

I did it first via gui and then again with yaml configuration. Both have mainly the same issue.

Answer 12 · 2025-09-17T09:05:23.000Z

@cookingeek Can you adjust the title to: Homeassistant Switch Problems with no Power Entity

Answer 13 · 2025-09-17T09:09:36.000Z

Can I test your changes?

Answer 14 · 2025-09-17T09:15:21.000Z

if you know how to compile evcc feel free to do so...

Answer 15 · 2025-09-17T09:26:25.000Z

other option is to create an number helper with a 0 in ha and provide that as a power entity.. if you only whant a clean log...

Answer 16 · 2025-09-17T11:25:38.000Z

For the moment the best Option is to fake the Power Entity in HA by creating an template helper...

Example for a device that pulls 300W when on :

{{ 300 if is_state('switch.exampledevice', 'on') else 0 }}