You can easily throw solar panels in a land fill. It isn't a big problem. Slag heaps from coal is already a much larger problem than a solar panel landfill would ever be. A single coal mine has a bigger slag problem than all the worlds solar panels combined.

Yes, we should take the problem serious, but it is also grossly overrated. It is certainly not a reason to avoid solar panels.

https://www.solarquotes.com.au/blog/recycling-solar-panel-wa...