It's delusional.

The scenario is predicated entirely by the assumption that the only value of power generation to Algerians, for example, is the market value of surplus capacity, stock, and distribution ("Who are they going to sell it to? The Americas? Russia?"); and energy export is a prerequisite of "economic integration" signified by some amount of EUR reserves accumulated entirely as revenue share of exclusive marketing to EU customers.

That's your inner, patronizing imperialist speaking obliquely about the intractable problem of increasing energy consumption in Europe. This golem cannot conceive of an African nation obtaining project financing to acquire a discrete productive means and extinguish debt. It cannot conceive of any competitive supplier of plant and equipment other than the tools in its chest. Precious hates BRIC brac.

Do you know much wind capacity is actually installed in Algeria? Could you estimate much more renewable energy will Algeria require to (1) replace fossil fuel marked-to-OPEC (2) service its public and private sector population over 80 years or so? This last goal is the most important measure of civilization, by the way, beside industrial capabilities and excess manufacturing capacity, exemplified by Algeria's partners in "economic integration."

Some information is in the Desertec prospectus, for example,

In 2050, we envisage that the EU-NA power system will have a total electricity consumption of at least 5000 TWh/a, with approximately 25% of this demand in [ALL OF] North Africa and the remainer in Europe. In total, only 60% (3000 TWh/a) of the system-wide electricity supply is produced in Europe, whereas 40% (2000 TWh/a) is produced in [ALL OF] North Africa.