Is a solar power system worth it, experiences?

Solar thermal energy is not worth it for me at all. Calculated savings of 200 per year. Then after 20 years I've covered the costs.

Hello,

Solar thermal energy is not profitable for me at all. Calculated savings 200 per year. Then after 20 years I have covered the costs.

It's not really that simple. A heating system or hot water preparation practically never pays off, meaning whoever likes to freeze and accepts cold wash water saves the most money! But who actually likes that? Whether it "pays off" can therefore only be represented by a comparison. Furthermore, a clear distinction must be made between new buildings and existing buildings. Solar thermal systems have the problem of storing thermal energy versus user behavior. With photovoltaics, this essential problem disappears completely, since unused energy can be sold.
The desire of builders to receive "gifts (MAP)" often leads to a money pit regarding the final energy costs to be paid ;-)

best regards

We are currently building and completely forgoing geothermal energy, photovoltaic systems, solar collectors & Co. To still meet the requirements of the legislator, more savings must be made through insulation and sealing. Everything else can be retrofitted at some point, as pipes are prepared up to the attic and underfloor heating is installed in all rooms. In my opinion, these calculations about cost-effectiveness are purely theoretical anyway, because you don't even know if the system will function without issues until day X. Acquisition costs + maintenance costs + repairs + performance loss + ... form a sum that must be compared to conventional consumers. It is more a matter of personal preference than an ecologically and economically sensible investment.