"Solar power systems installed in the areas defined by the dark disks could provide a little more than the world's current total primary energy demand (assuming a conversion efficiency of 8%).
From what I see, it is NOT that much area needed.
See this table from the original article:
|Location / Desert||Desert Size / |
|Irradiation / |
|Area required / |
|Australia, Great Sandy||388,500||265||141,509|
|China, Takla Makan||271,950||210||178,571|
|South America, Atacama||139,860||275||136,364|
|U.S.A., Great Basin||492,100||220||170,455|
Labels: solar energy