I had weeks last January and February where the total house consumption per week was around 400kWh. That also included the weekday charging of the electric car (7kWh), open ERRs, and a heating curve of 30/21/0.
I just don't understand why your place runs at 28/21/0, while we have similar temperatures in the house. Upstairs 20-21 degrees, ground floor 22-23 degrees, basement 17 degrees (heating off). It can't just be due to the windows, and if it is, then the stone itself is as well.
So we are back to the idea of turning off the basement.
That would be interesting to know. Can you take a picture of the amount of heat?
Yes, I will. I have just reset it. The heat pump just turned on now. Tomorrow at 8 pm I will write down the amount of heat. Or is the amount of heat in the Dta, then I can even take the value from yesterday directly.
I don't really get the data thing. Does the photovoltaic now factor into the values? It really looks very good with . Could it be that it's already scratching KFW40?
Edit: What is the ht value of your building envelope ?