Building nuclear in a desert feel a bit like building hydropower dams in a desert. It does not really make sense and whatever the capacity factor is, being in a desert should increase it.

The only real drawback to building solar power in a desert is sand storms. That means the capacity factor is less relevant but life span and repair costs is a different matter. It is a bit similar to ocean wind farms. The capacity naturally goes up, but the salt water and transportation (as well as increased risks to engineers) makes life span and repair a bit more of an issue (it should be noted that most ocean based wind farms tend to use shallows and nature reserves near large cities).

But again, this project is built in a desert. The very definition of a place with consistent amount of sun. I hope the project works out.