“The 60 tonne catamaran costs 18 million euro ($24.4 million USD). The ship was created at the Knierim Yacht Club in Kiel, Northern Germany, and was launched successfully in March, 2010, after 14 months of building. To achieve to full photovoltaic capture there are solar covered flaps that are extended at the stern and amidships.”
I don’t know, I think you get more bang for your buck with sails.
Sure is pretty to look at, though.