This is the first of two volumes of in-depth case studies of zero-net-energy (ZNE) buildings, that is, of buildings designed so that the energy used by the building over the course of a year is equal to the amount of energy supplied by its on-site renewable energy system. In this first volume, six non-residential buildings of different sizes and types are discussed in detail, covering the general background of the projects, the design strategies developed and employed for the climate and building type, the design features and systems utilized to achieve ZNE performance and the computer modeling tools used in evaluating the effectiveness of these features and systems as well as the expected overall building performance. This book goes beyond recent publications on ZNE buildings with its reporting and analysis of the actual measured energy use and renewable energy production, including graphs and charts of this performance over a full year, confirming actual achievement of the zero-net-energy goal. Monthly and annual performance is then compared to the “predicted” energy consumption, with discussion of possible reasons for differences. Each case study concludes with a candid discussion of post-occupancy issues for the building with particular mention of those that appear to be common to each ZNE building. The book is intended primarily for design professionals as well as building owners who may be considering a zero-net-energy goal for a new or renovated building project, but it is also suitable for non-professionals who wish to develop an understanding of the eminent practicality of this emerging type of building. The book is focused on Design as the key ingredient in these successful buildings. Enhanced by many beautiful photographs and illustrations, it is attractive and easy to read, while still providing detailed technical information common to all the case study buildings.