Air-water heat pump current consumption and data

We have everything in beige, it's super comfortable. Even in the height of summer it only gets pleasantly warm on the terrace.

The heating now only runs every other day for a few hours. We should be done soon...

You deduce this from your offer? Is this your data basis that is valid for all of Germany? Seriously?

The assumption of 800 kWh/kWp is also not exactly valid nationwide in Germany.
But since with full feed-in (which nobody recommends anymore) it rather becomes a narrow plus-minus-zero story, even a bit of self-consumption helps. Unless the electricity price falls below €0.08/kWh on average for the next 20 years.

Conversely, one can also simply calculate from which kWp price one reaches the profit zone:

Price_threshold = Yield_per_kWp_per_year * Feed-in_tariff * Remuneration_duration

Yield_per_kWp_per_year is the 800 or elsewhere rather 950+ kWh/kWp -> can still be multiplied by a factor like 0.95 for the average yield over 20 years (degradation)
Remuneration_duration is the 20,x years (the started year also counts, IIRC).

Since the topic often comes up regarding solar yield and what color the terrace slabs should be

3 measurements on the subject

1x tiles inside the house in anthracite behind the window

Do the panes still have a significant damping effect?

What about 70% maximum feed-in? Do you have to consume 30% yourself?

What about 70% maximum feed-in? Do you have to consume 30% yourself?

There are different variants. First of all, with the 70% limitation you don't really have a big loss, because exceeding 70% is only reached at relatively few times. Usually, 70% is softly regulated. This means that a maximum of 70% of the system's capacity is fed into the grid. If you have self-consumption before the feed-in point, you can of course draw power from that (at least the house's base load). Hard regulation means that actually only 70% is forwarded directly in the inverter ==> in reality this means that with a good south orientation you lose about 5% of the annual output. But you save yourself the purchase of a smart meter. Or there are solutions with ripple control receivers. But these are not worthwhile for small systems (quite high costs).

70% soft and good is. The normal base load at least for me with 350-400wh will never absorb the peak. But there are enough consumers that can be run alternately around midday. Washing machine, cooking, electric car, dishwasher, hot water, etc.

And that only since mid-April. That goes on until mid-September. With the heat pump in heating mode, you don't have to worry about that anymore.