Which data to link to Solar panel energy dashboard

Configuration
1

Hey all.

Recently got started with home assistant and been struggling a bit with the energy dashboard. So for the only metrics I have in Home Assistant is solar panel data, which comes from the solax cloud api.

This data is fine and works correctly. I have three main values:

  • Production today, untill now
  • Production since forever
  • Current W production

I have this in my configuration

- sensor:
    - name: PV yield (Now2)
      state: "{{ states('sensor.solax_now') | float }}"
      unit_of_measurement: "Wh"
      state_class: total_increasing
      device_class: energy
      attributes:
        last_reset: "1970-01-01T00:00:00+00:00"
- sensor:
    - name: PV yield (Today)
      state: "{{ states('sensor.solax_today') | float }}"
      unit_of_measurement: "kWh"
      state_class: total_increasing
      device_class: energy
      attributes:
        last_reset: "1970-01-01T00:00:00+00:00"
- sensor:
    - name: PV yield (Total)
      state: "{{ states('sensor.solax_total') | float }}"
      unit_of_measurement: "kWh"
      state_class: total_increasing
      device_class: energy
      attributes:
        last_reset: "1970-01-01T00:00:00+00:00"

I’ve added all three of these fields into the energy dashboard, just so I could later remove the faulty ones and leave the correct one.

The problem I have is that it does not seem to realise Total and Today consumption are delta values. it just keeps on increasing them, leaving me with something like this:

Schermafbeelding 2022-04-15 om 10.20.12
Schermafbeelding 2022-04-15 om 10.20.121920×1055 51.8 KB

I don’t even understand how it even reaches those values :-). My actual generation up to now was actually (only) 4.9 kWh

So what needs to change where in order to get the correct values in there?

2

Found the issue here.

My metrics were correct. The problem was that I was querying the Solax REST API way too often, resulting in 0 values being returned. As soon as the statistics has a 0 value, and next time the real value again, it will add it up to the already existing total, skewing the stats.

I changed my polling frequency and changed my config like this:

solax_total:
      friendly_name: "PV total"
      unit_of_measurement: "kWh"
      value_template: >
        {% if value == "0" %}{{ states.sensor.solax_garage_total.state | float }}
        {% else %}{{ (states('sensor.solax_garage_total') | float) }}{% endif %}