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2017 Solar Decathlon | by Dept of Energy Solar Decathlon
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2017 Solar Decathlon

Denver Mayor Michael Hancock and Deputy Secretary of Energy Dan Brouillette experience the moss wall on the U.S. Department of Energy Solar Decathlon 2017 University of California, Berkeley and University of Denver RISE competition house at the 61st & Peña Station in Denver, Colorado. The competition and public event officially opened, Thursday, October 5, 2017. (Credit: Jack Dempsey/U.S. Department of Energy Solar Decathlon)

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Taken on October 5, 2017