Photovoltaic system: Costs, saving potential? - Experiences?

€7250 net should rather bring 6.6 kWp. I wouldn’t pay more than €1100 net anymore, even for “smaller” systems.
Of course, it always depends on the components, LG is simply more expensive than JA. Whether it’s worth it is another question ...

The numbers vary everywhere. We buy electricity in BW at about 30ct/kWh, rather a bit more plus 13€/month basic fee. We sell the electricity for 10.08ct/kWh, monthly advance payment 30€/month net. How do you get to 600€ compensation per year with 4 kWp (without subsidy you are only allowed to feed in max 70% of that)?

Are you talking about me?
We would only get to about €198 through feed-in. The last column adds feed-in and the savings potential of the "not purchased grid electricity" through self-generation.

okay, with the savings you can definitely calculate it. We have had our photovoltaic system in operation since 11/2019 and have since purchased about €700 less electricity. In April, for example, only 6 kWh...