This resource provides information about six non-residential buildings designed and built to perform at zero net energy (ZNE) consumption over the course of a year. Each of these buildings has proven to be successful at achieving that level of performance for at least one year of post-construction occupancy. As the case studies illustrate, architects and engineers generally have the skills and experience to design ZNE buildings, if the goal of ZNE is embraced early in the process and involves the related disciplines with each decision.