Yay, at last some of the hidden benefits of solar are being talked about, thanks for posting Enrique.
Like you I've been flumoxed to understand why countries in hot places haven't gone solar long ago.
Particularly shocking to me is island economies, Cuba comes to mind as a place that could have solved its energy and wealth problems long ago, if the government there had maximised what they could have done with several donations of solar farms from China, they could have used the energy from those to create more panels and thus more farms, and installations everywhere, quickly becoming 100% solar, but that would have resulted in wealth for all people in Cuba, which is maybe not what the Cuban government want, much as they claim otherwise.
Logically, concentrated political power doesn't like solar much, as it is distributed in nature, it isn't as useful to large establishments / empire as the concentrated energy available by extraction.
In fact, it actually threatens the big grid and energy industry.
Imagine the "jobs", energy, and materials that will be reclaimed, if we could let grids go.
Of course we can, and actually must do.
Vietnam is a great example of what can be done, the only thing they are missing is local hydrogen backup, but I think that is coming now with scaleable hydrogen products like "Enapter".
The only thing stopping them now is their government insisting on perpetuating their grid.