World's Largest Solar-Powered Boat

PlanetSolar is a boat powered entirely through solar energy. At 31 meters long and 15 wide, it's the largest in the world:

The 60 tonne catamaran (or is that trimaran?) has cost 18 million euro ($24.4 million USD) to create at the Knierim Yacht Club in Kiel in northern Germany and will be launched waterside next month with sea trials due between June and September. To achieve to full photovoltaic capture there are solar covered flaps that are extended at the stern and amidships.

SunPower has provided approximately 38,000 of their next generation all black photovoltaic cells, an efficiency of at least 22%, which they believe to be the highest efficiency solar cells commercially available. Maybe it's buried somewhere on the PlanetSolar site, but I missed what storage medium the boat will use once it has harnessed the sun's energy.

Link | Photogallery | Photo: Christian Charisius/Reuters

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