June 28, 2011


A startup builder in the San Francisco Bay Area has a goal of producing factory built/modular houses with net zero energy performance. Their first prototype was a two-story, two bedroom, urban infill townhouse design. It has been in operation for roughly a year, and has been extensively measured and monitored, providing information about its net zero performance. The data collected to date indicate that the building is on track to achieve net zero performance. Several obstacles arose during the construction and commissioning of the building, which provided some useful lessons on integrating advanced technologies. The monitored data has provided a wealth of information and has already been used to remotely diagnose malfunctioning or improperly operated equipment.