FoxESS Community - Owners & Installers Forum

I just stumbled over a study from a german university (htw berlin) that tested the foxess h3 10 with 6x ECS 2900 and found a hint there.
Allthough foxess got a good general result there it looks like the efficiency with a consumption load < 500 W is really bad (40 % to 70 %)
That would explain my ...

"That would only be true if your grid consumption is never used to charge your batteries"
Of course grid consumption should not be used to charge my batteries! That's the idea of the "self-use" mode I selected. Only solar power not exported to grid should be used to charge the batteries. That's how ...

Sorry. That doesn't add up for me.
I think power that I consume directly from the grid cannot be part of the efficiency calculation for the inverter and storage. The power that I consume directly from grid should not be reduced by the converter. So imho it cannot be part of the efficiency ...

I can also post the other values

September 2024 (Month) Production 970 kWh, Export 689 kWh, Sell-Consumption 280 kWh, Self Sufficiency 143 kWh, Grid Purchase 100 kWh, Consumption 244 kWh
October 2024 (Month) Production 448 kWh, Export 141 kWh, Sell-Consumption 306 kWh, Self Sufficiency 192 kWh ...

Hello alll!

Maybe somebody can explain what is going on here. In the readings of my mobile app I have a large difference beetween Self-Consumption and Self-Sufficiency. And that is constant, not only on one day.

My Setup:
Inverter: H3-12.0-E
Storage: 3x ECS 4100

My self sufficiency is only about ...