If we do not care about the possiblity, but only what would happen:

1. Firstly, solar panels in Sahara will power north Africa people who are struggle with poor grid outages.

2. Power generated by solar panel can be used for desalination, provide power for the desert.

3. Desert covered by solar panels, reduce ground reflectivity, resulting in increased precipitation and vegetation, which can greatly contribute to the development of rainfed agriculture and livestock in the region.