Construction costs are currently skyrocketing

Well, it doesn’t look much different at the Umweltbundesamt either.

I’m missing fracked and US LNG exported to DE in the graphic.
I mean that seriously – where do we stand in this case?

Look at the bottom right of the graphic.
A knave who thinks evil of it.

Whereas modern pellet heating systems or condensing boilers aren’t really that bad and have nothing to do with a classic stove. But the CO2 emissions of the heat pump are quite amusing.

Well, it doesn’t look much different at the Federal Environment Agency either.

Is the fine dust from the heat pump basically calculated from the electricity mix? Otherwise, it can’t be explained, or am I missing something?

Is the fine dust with the heat pump then basically calculated from the electricity mix? Otherwise, it can't be explained, or am I missing something?

That is probably from the electricity mix. If you take "green electricity," it looks different.
It is also unclear whether it is about primary energy or the generated heat energy. If the former, the COP is missing in the calculation for the heat pump.

That will probably come from the electricity mix. If you take "green electricity," it looks different.

And, where does the green electricity come from when the heat pump is preferably in operation, that is from November to March?! Hardly from solar, and the wind doesn't always blow either. If you order green electricity, the provider only has to have bought it in the annual balance overall, meaning: in winter, they also buy a lot of coal and gas electricity. Of course, because what doesn't exist, they can hardly sell!

It is also unclear whether it concerns primary energy or the generated heat energy. If the former, then the COP of the heat pump is missing in the calculation.

Based on 1 kWh of supplied heat energy.

The advantage of the heat pump is that any improvement in the electricity mix automatically applies to all end devices without having to replace them. The same applies to the car. And since both tend to be durable goods, that is also a factor not to be underestimated.

We had an outdoor Schuko socket installed, fed with 5x2.5 mm2. In the box, it is three-phase protected with its own RCD. Initially, only one phase of the Schuko was used, it all cost around 150 euros. In the meantime, we were able to perfectly connect a wall box with 11 kW to it (22 kW would require a thicker cross-section).

For photovoltaics: The electrician was commissioned to install an empty conduit, M32, which he laid with some overhang from the HAR to under the roof covering. We also hired the roofer to install the empty conduit through the roof covering in a second step and seal it at the top with a sealed coupling. Total also around 150 euros.

If you later need more than one string (one per roof side or roughly every 50 m2), take a thicker empty conduit or even two. And make sure the electrician does not make the bending radius too tight.

I have meanwhile received information on what will be done specifically and have taken your points into account:

Me: Questions about photovoltaic provision and wall box provision:
What specific services are covered by the additional costs?
For the preparation of the photovoltaic system, 2x empty conduits M32 should be laid over the roof covering and sealed, ideally with photovoltaic cable already pulled through. Do you cover this?

Answer (short and sweet :)): Yes

Me: Similarly for the wall box. Outdoor Schuko socket with empty conduit and pulled-in cable. Secured in the distribution box with its own RCD. Is all this covered by the additional costs or "even more"? Could you please specify a bit more concretely?

Answer: Cable routing and connection in the distribution box. Junction box for later expansion of a wall box.

So ok or should I pay attention to something else? 1,500 euros net costs for both preparations together. Sounds pretty expensive compared to Scout* 300 euros :(