Construction costs are currently skyrocketing

Yes. But I understand a forum as a place to give advice at the current time and not just to talk about how great things were 15 years ago.

Currently, it is madness to acquire photovoltaics if you don't have the money lying around uselessly somewhere, but have to finance it. Period ;)

PS:
I travel a lot in Sweden, in the industry. Even many industrial electricians would struggle there. They sometimes demand absurd meticulousness... well, another topic ;)

You’re opening several can of worms at once...
If the price is right, it always works ;)
However, the price is currently not as low as it could be because there are bottlenecks. You pay a surcharge without having any benefit.

If you don’t have the cash for the house, you have to finance it. So currently for 10, 15 kWp you have to borrow 15-20,000 EUR more, at 3%.
The additional requirement also pushes you into a higher interest rate bracket...

Installed at the same time usually means through the general contractor. He’s not stupid and will easily charge you a 20-30% markup...

And then you have 15 kWp, in summer about 1,500 kWh/month... and you can’t use it... in winter you still generate 200 kWh/month and buy expensive electricity additionally

I mean... do it if you enjoy it. But you won’t save a lot of money with it.
If you’re unlucky and you get hit by a hailstorm... well, let’s not go there.

In the long run it brings you a few hundred EUR per year. All that hassle for that?

Why don’t you take rising electricity prices into account? If the purchase price of the photovoltaic system rises, but at the same time electricity prices, which will continue to rise over the next 25 years, I believe that even at today’s prices, photovoltaics are worthwhile...

Why don't you address rising electricity prices? If the purchase price of the photovoltaic system increases, but at the same time electricity prices, which will continue to rise over the next 25 years, I believe that even at today's prices, photovoltaics are worthwhile...

I completely agree with you. And prices will rise anyway due to the annually increasing CO2 price. In our family circle, we have put several 600Wp balcony power systems into operation this year. These are very small systems, but the purchase price is manageable and they can be installed by yourself without much effort. The systems pay for themselves within a few years at the current electricity prices.

But even here I notice that prices have already risen by up to 30% compared to spring. Do the systems still pay off? From my point of view, definitely!

The same applies to large photovoltaic systems. Here I hope that bidirectional charging of electric cars will soon be allowed in Germany. Then I can charge my car during the day with electricity from the photovoltaic system (in that case a large one) and at night the car would supply the electricity back. This would at least theoretically make it possible to get by completely without purchased electricity and no additional battery storage would need to be bought. And yes, the battery of our hybrid with 18kWh would be enough to power our household fully for about three days.

Yes. But I understand a forum as a place to give advice relevant to the current time and not just to talk about how great it was 15 years ago.

That is true on one hand. On the other hand, your posts always imply that there are currently only exorbitant offers that do not pay off, which simply is not true. and I are two examples from your direct forum environment.

Here I am hoping that in the near future in Germany bidirectional charging of electric cars will be allowed. Then I can charge my car during the day with power from the photovoltaic system (in this case a large one) and at night the car would feed the power back. This would theoretically make it possible to get by entirely without purchased electricity and no additional battery storage would need to be bought. And yes, the battery of our hybrid with 18kWh would be enough to supply our household completely with electricity for about three days.

We have already discussed this topic. The first question would be how much warranty you get if you also use the electric car battery for household purposes. The second very important question would be the durability of the battery. Constant charging and discharging will reduce the lifespan, and then the question is whether it is still worthwhile?

If the purchase price of the photovoltaic system increases, but at the same time the electricity prices, which will continue to rise over the next 25 years, I believe that even at today's prices, photovoltaic is worthwhile...

With electricity prices of 40 cents, every system should actually be able to pay off very well - even if the systems become more expensive. With a 10 kW system and conservatively 8,000 kWh production as well as 20% self-consumption, that is already over €500 in electricity savings per year. Over the 20-year lifetime of the system, you would therefore save around €20,000 (very roughly), plus the feed-in tariff or increased self-consumption through an electric car, etc.