Hi Rikard, afaik this can easily be done with a < group > app device as in-between. It can group devices with matching capabilities and it sums the values without flows.
When you add a group app device, and select ‘power’ as matching capability, you’ll be able to select your individual power devices.
Now, you can add a power summarizer, and select the group device as input.
As example, I added the “1.Growatt”, another 2 Growatts (not in screenshot) and “4.SlimMeter” power sensors to a group device called “3.Power devices.”
Then the summarizer “3.Power devices” shows the total power of the grouped devices:
