Costs for heat pump, water, and electricity

To be honest, I doubt that the meter generally includes the heating electricity of the heat pump. From my point of view, that could be system electricity (circulation pump, etc.) of the heat pump and hallway lighting as you already mentioned. Otherwise, the numbers simply don’t add up. Is there no main electricity meter that basically "measures" the entire house connection? I would expect something like that anyway, and I assumed that in my instructions. I would only use the total heat quantities to distribute the electricity costs. So each proportional heat quantity to total heat quantity * total electricity costs. That’s what I meant by allocating.

So how is it arranged, do the residents each have their own electricity supply contract, or did you receive a total electricity bill?

Maybe I expressed myself incorrectly. To break it down a bit more. There is no overall electricity bill. There are a total of 5 electricity meters. Each residential unit has its own electricity meter and is also billed individually by the residential units, meaning each residential unit has its own electricity provider. The 5th electricity meter is the "common" one. It includes everything like hallway lighting, but is also supposed to be connected to the heat pump and also has a separate electricity provider contract. I assume that, in addition, the electricity that is necessary for the operation of the heat pump is measured there. (i.e. electric auxiliary heater and compressor!?)

Oh, I see. Okay, that's under General Hot Water. What kind of meter is that? Where is it?

And what consumption is listed on the bill from the general meter?

I have had good experiences with the online tools at eddi24 to create heating and additional cost statements for tenants. The price is really reasonable, which also makes the tenant happy. And once it is set up, the stored values can be directly accessed the following year. The tenants receive a neat statement as a pdf print, including a small statistical comparison to their consumption from the previous year and compared to the total consumption of the building.

The best program is useless if it is unclear what the meters show or if they are installed incorrectly. It is naturally problematic if the heat pump and [Gemeinstrom] are connected to the same meter.

The hot water meter under General is a heat meter installed on a pipe next to the heat pump. The meter has "Warmwasser" written on it with a marker. There is no invoice yet.