The Sahara Desert gets a lot of sun. In fact, it gets so much that if a mere 0.3% of its area was used for a solar plant, it could power all of Europe. So it only makes sense that 20 German companies are looking into doing just that.
The plan would be to scatter solar collectors all across northern Africa in politically stable countries rather than putting them all in one spot. It'll take years to build everything as well as $555 billion in funds, but in the long run it'll be well worth it.