It would of course make more sense to distribute the solar panels around the world in deserts around the world and not just one of them, thus reducing the distribution costs and ensuring all day round power. You talk about the cost, but not the profit. Energy sells, so why not build small and use the profits to fund expansion?

I wrote about this in 2008 https://blog.siliconglen.scot/2008/08/how-africa-can-be-richer-than-middle.html