This idea is so poorly conceived. Imagine installing and maintaining something like this. How are those panels supposed to stay clean?The panels and the cover should both be built but they should not be the same thing. No current panels are engineered for this application so they would have to be custom made. Just getting the project to the point where the first panel could be installed would cost millions. We could get started now installing commercially available shade covers and ground mounted solar. Ground mounted solar is simple to clean, simple to maintain, and simple to replace.
I agree the idea looks like a great way to reclaim the space, reduce evaporation, and generate power I just think the money would be better spent on a plan the optimized for expenses and longevity instead of optimizing for novelty.