The kitchen features polished-concrete floors, a Cambria countertop, and an Energy-Star rated refrigerator from Kitchen Aid. The cooktop, oven, and dishwasher are from Bosch. "With the exception of the experimental technologies, everything we’ve used is available off the shelf," Koenig says. "What really sets this project apart is that we’ve put all the pieces together. Everyone out there building a home should start with passive design and a well-insulated envelope."