Eco Company visits the campus of Santa Clara University where a team of students participate in a biannual competition called the Solar Decathlon sponsored by the U.S. Department of Energy. What do they have to do to win? They must design and build the greenest, most energy efficient house. They build it, then dismantle it and take it to the Capital Mall in Washington, D.C. to be judged. While Eco Company makes themselves at home in the house that placed 3rd two years ago, Adam gets a tour of the home they are readying for this year's competition.