Solar Panels in northern Africa

This is a region that is full of desert lands and that gets a lot of sunlight. Most of the land is uninhabited and really dirt cheap. I think the best possible utilization for this land is to build massive solar farms over it. The energy generated on those solar farms could be stored as hydrogen from the electrolysis of sea water. The hydrogen would then be sold on the market just like oil is today. This could fuel the future, a future global economy of 345 trillion dollars where everyone has the same level of affluence as an American citizen.