Does anyone know whether it makes sense to setup solar arrays closer to users or to concentrate them in sunny places and send them throughout the country? e.g. an analysis of whether we should setup all the solar farms in Nevada for the whole country... set them up in the general south and transmit north... or will each state have their own farms?
High voltage transmission lines are really quite efficient, and concentrating generation is usually the right choice. That said, it doesn't make sense to have just a single place for the entire country, as there are multiple grids in the US (primarily East, West, and Texas), and with very long transmission you can get into phase issues.
But one effect of ever cheaper solar is that transmission costs start to dominate generation costs, because transmission is not getting cheaper.
Cheap solar and storage requires rethinking every aspect and all conventional wisdom about the grid. Storage in particular is a massive game changer on a scale that few in the industry understand.