We know a solar flare melted telegraph wires in the 1800's..
Question is would a EMP whether from solar flares or Nuclear explosion in upper atmosphere destroy panel permanently?..

I don't think we have an answer, but when it happens is the wrong time to find out..

I was thinking having panels and controllers stored and faraday protected for after EMP is the bet.. But then arises questions about your batteries..

Will an EMP short them out?.. All worth looking into.. I know it has me questioning my set up..