I was talking with Ryan Lanham today about his Ocean Thermal Energy Foundation:

http://otec.pbworks.com/

As a futurist, I am very into alternative energy (like fuel cells), and Ryan starting telling me about the new OTEC design.

The older OTEC model uses thermal difference between ocean layers to power turbines, but the new design uses those differences to power desalinization and create raw Hydrogen, which can then be used in the emerging hydrogen economy.