How to get the house load

[kevinverelst]

Hi,

I'm using this integration for my H3-5.0-E inverter and would like to combine this with the https://github.com/nathanmarlor/foxess_em one. But it seems an entity showing the house load is required. Since "Load power" isn't available, any idea which one I can use?

I found out that just adding the phase ones results in like 11W which is wrong.
More info on this issue

[rsaemann]

Calculating the Houseload would be something like all 3 phases pf the inverter output+ all 3 phases of the inverters ESP output + all three pases of the meter import (!import of meter power is negative power!)
You would have to decide if charging the batteries is already a house load in your case (I would vote it is not (yet)).

I am thinking about a reasonable balance of powers to calculate the house load. If you alread have a working solution, please share it.

[kevinverelst]

Mmh, since I'm not using ESP, I don't think I need that one.
I now have a dashboard setup with some data (not all correct) from my inverter.
As you can see, I was generating 2.626Watts and charging my battery with 1.688Watts. While trying to figure out where I can see the house load(or power we are currently using to run everything except the battery) I noticed that the 'sensor.inverter_system_losses' came pretty close to the expected number as you can see in the screenshot. I'm not sure but is that correct?

The 14Watts at the bottom is 'sensor.inverter_load_power' but that is just a weird number

[mafischerhei]

Hi!
"'sensor.inverter_system_losses'". I don't think it's the house load, because it turns to small negative numbers as soon as the battery is empty and there is no solar power.

But, yes, what I would like to have, too is: An easy way to get the "house load"(power now) as well as "(paid) energy (power now)from the grid" .

Any help to get these two would be great. (I'm new to home assistant)

Thanks a lot for your work!

[rsaemann]

sensor.inverter_system_losses ist the heat loss of the inverter only. It is calculated from the energy balance. The problem is, that the values used to calculate the balance are not collected at a single point in time. So if you switch something off, it might happen, that suddenly there is negative loss because the input is still high, but the load output is already low.
The only way to deal with this would be to receive all values of the inverter at once. But this is currently not possible with the HA modbus data call-method. Every sensor value is requested on its own and the are some seconds between each value.