Well i got 6 KWH in December and the highest of the year was 81.4 KWH in June. I’m just saying that getting closer to fully consuming what you produce is much more worth than going into the grid/batterys. We also don’t produce to get to 0 KWH by external sources but that isnt the goal.

Well we are a 2 person household basically, what do you do to consume the power of 8 panels on sunny days?

4 Solar Panels are plenty, I have 2 and on sunny days you get much more than you can consume. I would recommend just getting 2 aswell (I got 870Watt peak in total) because everything else would require either some form of battery or would involve giving the energy into the power grid. Also in Germany there is a 800W limit for easier registration aswell.

“This single thing is more expensive in this country” is a stupid way to compare prices from countries.