Construction costs are currently skyrocketing

95% of the time this will happen and that would even be a good thing, at the latest in 2024.
Photovoltaics is one of the few things in house construction that actually pays off within 10 years.
The carport for the convertible, for example, will never pay off.

Well yes - but not in the current times...

Interest rates have risen massively... Photovoltaic prices have risen massively...

If I have to borrow 20k for 0.8% more at construction prices of 2400/sqm my God...

20k more for 3.2% and 3000/sqm construction price is a different ballgame.

Edit:

Does a mandate count from the date of the building application approval or the actual start of construction?

Edit: Does the approval date of the building application or the actual start of construction count for a requirement?

Until now, the date of the decision was considered the milestone. But since those up there are fickle, anything is possible in the future. In BaWü there is already a photovoltaic requirement for new buildings, or am I mistaken?

Since 05/2022 yes...

What do you think will happen in the market when from 2023 onwards there is nationwide photovoltaic for all new buildings... Then I will retrain as well and make a killing...

I just meant that it often has a bit of a stale aftertaste specifically in DE.

The stale aftertaste in DE is mainly due to the fact that for many years people have taken the easy way out and relied on marketing nonsense and inflated engines (keyword Plug-In Hybrid) instead of real innovations. That made development less stressful and was easily sold to Uwe and Renate ("We've always driven brand XYZ!"). As if that weren't bad enough, people then also complain that in the meantime other manufacturers have put their not-so-harmonious sounding indicator on the left and overtaken us in terms of innovations.
Best regards from Bavaria.

If the ,

I doubt that with the prices that have now been mentioned. Especially if you have to take up additional capital for it and finance it at 3%. It may be that it will get better again in a few years when capacities are also larger. But in the short term, a further increase in demand is the last thing that makes sense

special topic, material has become 30% more expensive, but electricity has also caught up. If photovoltaics amortize in under 10 years, I would consider it sensible.

One can only hope the government doesn't come up with the idea of making photovoltaics mandatory from 2023 for all new buildings... then the builders will be hit with additional costs of 10-35k again :/

I personally very much hope so. I can't understand this whining from you and other builders. You may perceive it as "being forced upon you", but please be aware that building is the ultimate luxury and the photovoltaic system is probably the only trade that pays for itself.