60% of 6%
they are referring to 60% efficiency of current technology..which is about 5 to 6%.
60% of 6%...this is the numbers used in their guess-tamation estimate.
10% of the desert is just a figure...solar fields would be spread all over the world where needed.
they are just trying to make a point.... about the size needed to supply the world.
use some common sense folks.
dr johnny