I installed solar panels last year, and ever since the beginning, I have a feeling they're not producing as much 'as they should'. But I had no way to compare, to prove my point. If I get 10kWh of production for a certain day, is that good or not?
So I started going through the web interface of my remote monitoring (comes standard with each installation). I noticed there is a kind of 'kiosk URL' with a unique code in it, that shows you a 1 page overview of your installation's daily, montly and yearly solar production. If I could have several of those URLs for other people's installations too, then I could start comparing! I found someone with the same solar panel provider and got a second kiosk URL.
I started with a (PHP) component that can take one of those Kiosk URLs and extract the data, and that worked fine. This was step 1