"The machine is different from all the other projects that aim to derive energy out of waves. It can be used in a calm sea as the Mediterranean, even if its efficiency in the ocean could be five times bigger" Grassi said.

Wind and solar stand as the most recognizable clean, green dynamos. In the U.S.A. these technologies have survived for decades mostly without the aid of government subsidies (unlike coal and oil), and many claim that renewables could take off with just a