I wasn’t aware that anyone had made bulletproof solar collectors. I would expect much vandalism form those fenced out.
Ever heard of polycarbonate? Almost indestructible. It’s what they make bulletproof glass out of. Why not put a Lexan shield over the top of the panels? The material is clear and used for aircraft canopies so I don’t see how that wouldn’t be an answer along with other engineering details that would prevent access to the panels without actually crossing over the wall.
I agree. The Mexicans are going to take pot shots at the solar panels with rifles, and if close enough, throw rocks at it...unless they can make panels with metal like aluminum.