My main gripe with solar is that it doesn't last long enough. The panels have to be replaced about every two decades, but they take a bit more than two decades to amortize. This is why everyone I know that wanted to get into solar did not get into solar.
Have you run your numbers recently because a 20+ year break-even isn't common? I wonder if you have some highly subsidized power or something because most places would be under 10.
The decision to not do solar was made last year, so that's how old the numbers are. It was made together with the people selling solar. It's very dependent on the direction your roof is facing and how much roof space you have. Also, installing solar is expensive (20k€ to 30k€) here in Germany, so despite power also being super expensive it still makes no sense. There's one neighbor that did it and kinda regrets it, since it's more expensive all around.
My main gripe with solar is that it doesn't last long enough. The panels have to be replaced about every two decades, but they take a bit more than two decades to amortize. This is why everyone I know that wanted to get into solar did not get into solar.