House consumption as a device

[imautohuttraeger]

The energy dashboard already shows the house consumption with actual power in Watt and daily Energie in kWh.

I am looking for an easy way to get these data into a virtual utility device type "general, kWh". As the calculation of these data is already done in the background obviously, I thought I could maybe pick the data via dzvents script, but without extra calculation, so that the figures are really identical.

Is this possible - and if yes: How?

[madpatrick]

If you have data available you can do almost everything with it
Make a dummy devices and place the data into it

[imautohuttraeger]

Sure. But where do I get the data from? I only see it in the right bubble of the energy dashboard (actual power and daily energy). So it is calculated and displayed already but I don't know how to address these data in a script.

I want to avoid of calculating it in parallel with possible slightly different results and additional unnecessary workload for Domoticz

[madpatrick]

You data in the Energy dashboard is defined in the settings of the Energy dashboard
This is setup by yourself. The must be devices measuring the power, otherwise you have a very smart system

[imautohuttraeger]

Got you. Sure. I know I can calculate it from P1, solar and batterie. I just thought I could avoid it, because the system is already doing this calculation process somewhere in the background.

[waltervl]

As the data is calculated by the Energy dashboard itself it is not put into a device.

You can use the same logic as used in the energy dashboard to calculate the house consumption and put it into an Energy device by a dzvents script.
The logic is in the file: https://github.com/domoticz/domoticz/bl ... troller.js

Code: Select all

  fTotalHomeUsage (kWh today):
  Grid used + Solar generated − Grid returned
    + Battery discharged (if configured)
    − Battery charged (if configured)

[imautohuttraeger]

Thanks. With AI help, I could make this script and it works well. (Comments by Claude in German - sorry)

Code: Select all

return {
    on = {
        devices = { 743, 747, 746, 906 }
    },
    execute = function(domoticz, item)
        local pvcounter = domoticz.devices(743)
        local importcounter = domoticz.devices(747)
        local exportcounter = domoticz.devices(746)
        local battery = domoticz.devices(906)
        local dummyVerbrauch = domoticz.devices(816)

        -- Aktuelle Leistung berechnen
        -- battery.actualWatt: negativ = Entladen (liefert zusätzlich Energie an den Haushalt
        -- -> muss addiert werden), positiv = Laden (Energie fließt in die Batterie statt in
        -- den Haushalt -> muss abgezogen werden)
        local aktuelleLeistung = pvcounter.actualWatt + importcounter.actualWatt - math.abs(exportcounter.actualWatt) - battery.actualWatt

        -- Nur den Watt-Wert übergeben; kWh übernimmt Domoticz selbst (Energy read = computed)
        dummyVerbrauch.update(0, string.format("%.1f;0", aktuelleLeistung))
    end
}

Maybe grid import and export could even be fetched directly from the P1 device, but I had it as separate devices already.