U.S. Department of Energy Solar Decathlon - College Students Competing for a Clean Energy/Cool House Future For the next two weekends, there are 14 creatively efficient small homes on display at the Great Park in Irvine, CA. Sponsored by the DOE, the Solar Decathlon challenges teams of students to create sub-1000sf homes that: Cost less than $250,000 to build Have systems that heat, cool, run appliances, provide hot water and [...]