Solar 7, the “green” house being constructed by the MIT Solar Decathlon team, will be shipped to Washington, D.C. for the U.S. Department of Energy Solar Decathlon competition in early October. Kari Williams May. 9, 2016 Facebook Twitter Reddit Print Solar 7, the “green” house being constructed by the MIT Solar Decathlon team, will be shipped to Washington, D.C. for the U.S. Department of Energy Solar Decathlon competition in early October. Kari Williams