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 %). That is, all energy currently consumed, including heat, electricity, fossil fuels, etc., would be produced in the form of electricity by solar cells. The colors in the map show the local solar irradiance averaged over three years from 1991 to 1993 (24 hours a day) taking into account the cloud coverage available from weather satellites.I like this because it gives you a good perspective as to how much space would be needed. Looked at this way, it does not appear to be that much land at all and all of the land he suggests is desert.
|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|
Now all we need is for the progress ratio to kick in and get solar panel prices down so that solar electricity is cheaper than burning coal. Hopefully sometime around 2023 if not sooner.
via loster.com via Wikipedia