Visitor tour the U.S. Department of Energy Solar Decathlon 2011 in Washington, D.C., Friday, Sept. 30, 2011, with Arlington, VA, left, and the Lincoln Memorial, right, in the background. (Credit: Stefano Paltera/U.S. Department of Energy Solar Decathlon) Search “solar decathlon 09 blog” from Solar Decathlon Highlights

Search “solar decathlon 09 blog”

Visitor tour the U.S. Department of Energy Solar Decathlon 2011 in Washington, D.C., Friday, Sept. 30, 2011, with Arlington, VA, left, and the Lincoln Memorial, right, in the background. (Credit: Stefano Paltera/U.S. Department of Energy Solar Decathlon)