DW-TV: Let’s pull in Jens Hobohm, an energy consultant with Prognos here in Berlin. Now Mr. Hobohm, you consult with firms and governments. How realistic in your opinion is this project Desertec? Jens Hobohm: Well, I would say it's in our hands to decide today if we want to make it happen or not. I think politicians are willing to step forward today with solar energy in northern Africa, and we need a political framework in these countries which makes it possible for investors to take huge amounts of money into their hands and put it into these new technologies.   DW-TV: You mention huge amounts of money - we're talking about 400 billion euros for this project. Where is that money going to come from? Jens Hobohm: There are a number of investors who are willing to take a risk in this. But on the other side we have to see that nobody will invest in something where he doesn't expect a return on this investment. DW-TV: Are you expecting a return on this investment? What does your gut tell you? Jens Hobohm: It depends on the political and economic framework that is set by policy because it's not a free market, you can't do this on a free market. Renewable energies are still not competitive against oil and gas. You need a certain framework that enables you to get something like a safe return so you can take long-term decisions like this one. DW-TV: The CEO of the Swedish energy provider Vattenfall has said he does not think this project is worth it, he says it's too expensive, it's too risky, and he's talking about the political uncertainties in north Africa. Do you think the geopolitical concerns here actually outweigh the financial risks? Jens Hobohm: Well, there's a nice saying: you can't dig for oil in Switzerland. And maybe you can't dig for solar also in Europe, or in Switzerland. I think yes there is a risk, there are large risks actually, and we need strong political help to realise the project, that means that on a very high politi...