Would be kinda interesting to see a histogram of the azimuths and/or tilt angles.

In my native Netherlands I'd guess to see that peaking at ~south at say 15-30 degrees, with some lower peaks at east/west combos.

Curious to see what it would be in this dataset.

I love that idea. I don't have time for anything elaborate today but I dropped two visualisations at the bottom of the post.

I thought the thing to do these days is put them flat and as close together as practical. You lose a few points of efficiency but double the number of panels you can fit in a given area. And panels are so cheap that this trade-off makes perfect sense.

> In my native Netherlands I'd guess to see that peaking at ~south at say 15-30 degrees, with some lower peaks at east/west combos.

Folks are doing some interesting exploration of the pros and cons of different alignments, e.g.:

> When roof area is limited, the question becomes: What layout lets you install the most space-efficient solar capacity within budget on the available area? In those scenarios, an east–west (E–W) layout can outperform a south-facing layout. The South layout may be “better positioned”, but the E-W allows the installation of more panels in the same area.

* https://ases.org/east-west-vs-south-facing-solar-when-more-p...

Basically examining 'quality versus quantity', depending on what your location and roof allows.

It should be roughly correlated with latitude (the exceptions being panels on sloped roofs which will match the roof slope).

There's a helpful chart here, which happens to match your approximate latitude:

https://ratedpower.com/blog/solar-panel-orientation/