Solar Panel Acreage Needed to Power the Entire Planet: 158 mi x 158 mi

The three squares on the map, below, represent how much solar panel acreage would be needed to power Germany (marked "D"), Europe (marked "EU"), and the entire planet (marked "Welt"):

Not that big, right? Just a small chunk of the Sahara Desert in Algeria.

This, according to a graduate thesis from the Technical University of Braunschweig, by Nadine May:

Read full text in Daily Kos