Stop 2: Longtime high-performance-home builder Don Ferrier, of Ferrier Custom Homes, invited tour attendees into an interesting Energy Value Housing Award winner he built in 2006, nestled into mature cottonwood and pecan trees. The house is built with SIPs and an ICF-formed thermal mass floor, and is designed and oriented to maximize natural daylighting and passive solar heat gain in the winter, and to reduce heat gain during cooling periods. The house includes a prototype water-tower chiller, a unique sealed, pressurized and conditioned crawl space that acts as a heat sink, and a Galvalume reflective metal roof that reflects most of the heat that hits it. Parked on the permeable-paved driveway was a natural-gas-powered Honda Civic with its home refueling station (called Phill) that connects to an existing natural gas line and will fill the car overnight for a 200-mile range.