Virtual Battery for Solar panels

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1

Hello,

I have a virtual battery in my solar system (I can send back the power to grid and then use it later).
I would like to create an virtual sensor which can monitor my battery charge level in kWh.
Can you help my how to do it?

I have a shelly 3em sensor next to my utility meter and I have a sensor.total_house_power which is measuring the total power going in and out from my house. positive values - power going from grid to house, negative values - power is going from house to grid.
I have also two sensors with are measuring the total imported energy and total exported energy sensor.energy_export_sum and sensor.energy_import_sum

do you have any idea how can i calculate the charge of my virtual battery?

thank you

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3

‘’’ I’m facing the same challenge right now and somehow I’m not getting anywhere.
I found an integration called Battery_sim (Github).
The installation via HACS worked easily. Unfortunately the application shows a strange phenomenon. The charging process always ends after exactly 10 seconds.
Did you get further with your search. Would you like to try out Battery_Sim?’’’

4

In my case this sensor works fine. Im using shelly 3em pro for consumption measuring and i added total sensors to import/export.
thank you for tip :slight_smile:

5

What exactly is the battery charge? The difference of sent to the grid minus consumed from the grid?

If so, that would be a simple template sensor (exported - imported) and maybe some other math for a percent if there is a cap or something.

I don’t have anything like this, so I apologize if I’m missing something.

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yes its imported - exported(with some capping). the Battery_sim has all the features to simulate the battery. It can also simulate the Import Export energy.

7

Hi Benjamin, could you please share how your code? Im trying to use this integration but no luck so far.
Thanks

8

im using Shelly 3EM 3-phase Net Metering templates for Import, export and consumption
to monitor the import export via shelly and use net metering and then i used sensor.power_import and sensor.power_export values