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Interlock House

Project Engineer Tim Lentz working on the Interlock House's roof in Washington D.C.

Iowa State Project Engineer Tim Lentz, foreground, and Team Alberta student Leah Battersdy, right, work on the roofs of their houses during the U.S. Department of Energy Solar Decathlon 2009 on the National Mall in Washington D.C. Credit: Stafano Paltera / U.S. Department of Energy Solar Decathlon

Iowa State University is excited to be the first team from the State of Iowa to participate in the U.S. Department of Energy's Solar Decathlon. Our house, the Interlock House, showcases new practices in construction that use less energy and create less waste, feature unique building components and products developed in collaboration with the ISU Biocomposites Research Team, increases energy awareness, and demonstrates Iowa State University's commitment to sustainability.

The Interlock House, designed and built as a free-standing solar-powered dwelling, fulfills the call of our university's president, Gregory Geoffroy, for students, faculty, and staff to join the Live Green! initiative to reduce the university's carbon footprint and become a model of energy efficiency.

We invite you to explore our website to learn more about the Interlock House, sustainability, and energy efficiency.

Major sponsors Iowa State University U.S. Department of Energy Solar Decathlon U.S. Department of Energy National Renewable Energy Laboratory