I live in the UK. It rains here. however with a 5kw array, and a 13kwh battery, we are self sufficient for at least 6 months of the year (as in 0kw from grid)

I live in the UK. It rains here. however with a 5kw array, and a 13kwh battery, we are self sufficient for at least 6 months of the year (as in 0kw from grid) and at worst 40% in the midst of winter. Today I have generated 10kwhr and its only 14:00. Germany should have no real issues with solar production. I mean its not great, but its not anywhere near as bad as you imply.