It was nice to struggle with some math once again. Some of my knowledge is a bit rusty, but working with it brings it back fast enough. It is also not that difficult and especially if you know what it is good for, a little bit of effort can give really rewarding results: https://www.bbcamping.eu/reflections/the-geometry-of-sunlight/

#sunset #darksky #pvcells #maths #solarpower #homebeforedark #blog #sustainability