Here's what they reporeted, "Using satellite data for Morocco, Portuguese company Net Plan worked out how many solar photovoltaic panels were needed to power a remote relay station for phone signals. It worked and a costly backup of diesel generators was removed a year ago."
The two sunniest spots on earth are in the Pacific south of Hawaii and in the Sahara in the nation of Niger. Lots of sun, no clouds. This map is based on over two decades of digital date collected by satellites. NASA's brains and computers then generated this map. It's explicitly being released now to help solar engineers and investors decide where to place their solar collectors.