Solar Energy

May 10, 2018

2009 Solar Decathlon

2009 Solar Decathlon
solar energy
Image by Dept of Energy Solar Decathlon
Visitors observe Penn State’s solar-powered home featuring a living green wall used to grow spices and herbs for cooking during the U.S. Department of Energy Solar Decathlon on the National Mall in Washington, D.C., Friday, Oct. 09, 2009. (Photo by Stefano Paltera/US Dept. of Energy Solar Decathlon)

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