ᐅ Is installing solar panels on the roof worthwhile?

Hello everyone,

Despite extensive forum searches and researching sample calculations online, I have not yet found a satisfactory answer: Is a solar panel system on the roof really worth it?

It’s actually quite simple—you compare the additional costs with the ongoing savings on energy bills, add in maintenance costs and so on. Then, of course, you need to account for the opportunity cost of the capital invested. Naturally, you also have to make some assumptions, for example about the future development of electricity prices.

Can anyone share real-life experiences to shed some light on this?

Best regards
HB1

If you don’t pay for it yourself, then yes... otherwise no...

First, it would be helpful to clarify what type of system is meant by "solar system." Solar thermal for domestic hot water and/or heating support? Photovoltaic (you are referring to electricity prices)?

Alex85 schrieb:
It would first be helpful to define what kind of system is meant by "solar installation." Solar thermal for domestic hot water and/or heating support? Photovoltaic (you refer to electricity prices)?

I deliberately left that open. I’m also interested in which option is more cost-effective—if any is profitable at all. Whether the savings come from electricity or heating costs doesn’t really matter for the calculation.

If several people shower and bathe frequently, but not necessarily at the same time, solar thermal systems are a good option. From March to October, you can get hot water from the sun. Karsten

What does "worth it" mean for you? Compared to which other investment types or ROI?