Solar / Photovoltaic from an economic perspective

Well, the warranty unfortunately helps little to nothing because most manufacturers have filed for bankruptcy after 5-6 years... So you get no more and no less than the legally mandated 2 years of warranty...

Then you should handle it like f-pNo; large companies mostly have successors. Aside from that, I wouldn't put the - possibly due - trust in a small no-name when it comes to new technology either.

Rhenish regards

I have...nevertheless, the investment is hardly worth it...but it is good for the conscience...

I have... nevertheless the investment is hardly worth it... but it is good for the conscience...

Somehow you are very negative about photovoltaics. Pure feed-in will probably hardly pay off. With self-consumption and the guaranteed further rising electricity prices (who do you think pays for the new, expensive underground lines? Increase of the Renewable Energy Act surcharge!) it is a worthwhile investment. Reasonable modules do not break down after a few years either.

Reasonable modules don’t break down after just a few years.

Well, I really think that’s a myth... they all just boil down to the basics...

I’m not negative... I just mean you don’t have to sugarcoat anything here... a standard roof equipped with photovoltaics or solar thermal in our latitudes isn’t worthwhile... the investment simply doesn’t pay off because the area is too small, but the problems are the same as with a large system... namely wear and other defects... hotspots, cracks, defective diodes, etc.

However, I think it’s great that people install photovoltaics or solar thermal on their roofs... I also think it’s great when I see an electric car on the street... but none of it is profitable...

Provided the solar system generates 100% of the hot water 365 days a year, otherwise it looks even worse.

...and provided you get the EUR 3,000.00 financed at 0.00%. Otherwise, you can subtract another 30 euros from the approx. 160 euros....

--> I'm glad that despite the planned gas boiler, I can avoid putting something on the roof.

Somewhat generalized and you probably have neither.

Without wanting to make a big calculation now, a photovoltaic system pays off after about 12-15 years - depending on the agreed feed-in tariff, the interest rate, the repayment rate, the achieved self-consumption, and the current electricity price.

...

Without an example calculation, such statements are unfortunately not convincing. Didn’t you even do any calculations?