University of Illinois at Urbana-Champaign
The team's Gable Home produces up to four times the energy it needs, yet looks like a traditional home. It incorporates 100-year-old barn wood and high-efficiency solar panels on the outside and features a familiar gable roof profile. Inside, materials such as optimized windows, insulation and appliances mean the house can be heated with a single hair dryer. Learn more about this house.