Mark Jacobson, 
Solar Power From the Sahara Is Debated - Along with dictatorships and war zones, the route crosses "resource nationalist" regimes such as Libya that could discourage investment, says Samuel Ciszuk, a Middle East and North Africa energy analyst for IHS Global Insight in London. Hermann Scheer, a German parliamentarian and president of Eurosolar, a nonprofit group that promotes renewable power, has a litany of reasons to doubt Desertec, beginning with its technology: Solar thermal plants use mirrors to concentrate sunlight and create steam to drive turbines that generate electricity. Most require water for condensation and cooling—a scarce resource in the Sahara (...) In May, France—concerned that German corporate interests might dominate the initiative—announced its own project, called Transgreen, to build a network of high-voltage, direct-current cables that would be necessary to carry electricity generated in Africa to Europe.
http://online.wsj.com/article/SB10001424052748704657504575411371922245304.html?mod=googlenews_wsj
Aller pomper l'électricité solaire saharienne (et de fait puiser dans les réserves d'eau douce locales) pour alimenter les européens est
tout simplement absurde : l'urgence, c'est d'alimenter les africains en électricité renouvelable, pas les européens !
- Olivier
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