U.S. Department of Energy announced the winners of the 2009 Department of Energy Solar Decathlon competition on the National Mall in Washington, D.C.
The active competition lasted for a week, with the prototype home designs open to the public through Sunday. Team Germany's winning "Cube House" design produced a surplus of power even during three days of rain. This is the team's second-straight Solar Decathlon victory, after winning the previous competition in 2007.
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