Construction costs are currently skyrocketing

We actually now have the first partial offer for our ground floor renovation. About €100/m2 for laying and connecting the underfloor heating. Only the installation of the thermostats is not included. And for the solar thermal system €10,200 for everything. Domestic hot water + heating. I think these are normal, acceptable prices. And the structural engineer charges €62/h, which is also normal according to my research.

so bad is that now, is it? sure, instead of the one-time payment a few more % would be good, but generally still okay.

04.22.-.06. 2025 27 months and 6.5% wage increase ... That means inflation of 2022 8% plus inflation of 2023 6-9% plus inflation of June 2025 = not good but better than nothing The one-time payments only compensate for the respective year and the base salary therefore rises too slowly.

Especially not when you consider that chemistry, even compared to the well-known car manufacturers, has always been exceptionally well paid.
A chemical technician working three shifts easily earns 3,500 EUR net/month upwards there, and the shift supervisor sometimes already approaches a six-figure annual salary (gross, of course).

This is now off-topic anyway:

That perhaps depends on which car manufacturer you compare it with. I can only say that the Stuttgart car manufacturers easily keep up...
I am not sure about chemistry now, but in my opinion, I would say that chemistry on average pays worse than metal, and the pinnacle of metal are the car manufacturers.

This is now off-topic:

That might depend on which car manufacturer you compare it to. I can only say that the Stuttgart car manufacturers can easily keep up...
I’m not sure about chemistry, but in my opinion, chemistry generally pays worse than metal, and the top of metal is the car manufacturers.

I don’t get my apprenticeship paid there though (chemical technician)

Classified in E4

3050€ basic salary gross
+ 305€ (10% shift allowance)

20% for rework
Holiday pay 30€ per day (30-33 days)
100% Christmas bonus
Performance bonus approx. 700-1200€

About 42-45k gross per year

It’s good, but inflation is already eating away quite a bit of the value until 2025

I don't get paid for my apprenticeship there (chemical technician)

I don't know what you want to tell me right now? Maybe I didn't understand, my statement only referred to the one from , that chemistry would pay better than automotive. I doubt that.

And for the solar thermal system 10,200€ with everything. Domestic hot water + heating. I think these are normal, acceptable prices.

I think that's a lot. In case of doubt, you've basically already paid for half a photovoltaic system. I'll just say this once (ultimately it's your decision), but I don't see any point in solar thermal here. I would leave it out and rather try to install a photovoltaic system in a few years. Even without a heat pump, it should pay off faster through self-consumption than the solar thermal system.