No dust or humidity challenge over here, the problem that those who installed solar are facing is always in the rainy season where it can go on for days with no sun at all.
But this can be fixed if one has high numbers of solar panel installed, charging will be slow but power will still be available, mining Bitcoin is very easy if you have solar installed already, it only start to become challenging if you plan to run more Asic miners.
Another well known challenge is night mining, using battery backup for mining isn't always advisable as it wears off the power of your battery backup very quickly.
Thank you for your insightful response, Somegory. You’ve raised some very practical points that every solar-based miner faces.
In South Asia, we deal with the same "no sun" issue during the monsoon season. My current approach to mitigate this is focusing on system efficiency rather than just adding more panels. Since I am working on a small scale, I prioritize low-voltage DC setups to avoid a 15-20% energy loss that usually happens during DC-to-AC inversion.
Regarding your point about battery wear, I completely agree. Running heavy ASIC miners on battery backup is definitely a "battery killer." This is why I am experimenting with using solar power only during peak sunlight hours for the main load, and keeping the battery backup strictly for maintaining the controller's stability or low-power nodes.
Using a 10A10 diode has also helped me ensure there is no leakage back to the panels at night, preserving every bit of charge in the 20Ah battery.
Have you ever experimented with "Solar-Only" mining schedules (mining only when the sun is up) to save the battery bank? I’d love to know your thoughts on that.