Shellies Discovery Script

[MarijnWi]

I have some issues with the utility meter when I reboot my HA.
My utility meter looks like this in my configuration.yml:

utility_meter:
  daily_solar_energy:
    name: Solar Total Energy Daily
    source: sensor.shelly_em_solar_meter_total_returned_0
    cycle: daily

It gives me a peak number when I want to check the Energy panel when I rebooted my HA.
I think there might be a problem described like here:

Issue with Utility Meter after rebooting

Hi, I am using Shelly 3EM through MQTT, and finally I have used following code to clear out the problem of getting unavalaible / unknown state of total power meter converted to 0 on restart: sensor: - platform: template sensors: energy_consumption: friendly_name: "Total energy consumption" unit_of_measurement: kWh value_template: "{{ (states('sensor.shelly_3em_shelly_3em_hlavni_meter_total_0')|float + states('sensor.shelly_3em_shelly_3em_hlavni_meter_total_1…

So a availability_template with a check on the is_state (as described in the article in te link) should resolve the problem (I hope). But I do not know how to the availability_template to the template of the sensor (for example: sensor.shelly_em_solar_meter_total_returned_0)

Any idea how to solve this please?

Thanks a lot

Marijn