This chapter describes and performs four in-depth case studies of existing occupied net or near net-zero energy buildings (Net ZEBs). The purpose of the case studies is to illuminate realistic aspects of the design process, construction process, the final designs, and the operation of the buildings based on measured data. Following this, redesign studies are provided where the authors investigate alternative solutions to achieve net-zero energy or to achieve it more effectively. The case study buildings are diverse in type, climate, and Net ZEB strategy, offering considerable insight into Net ZEBs from conception to occupancy. Rather than acting as models from which exact Net ZEB design replicas should be developed, the case studies are intended to inspire new design approaches and consideration of alternative pathways to the level of net-zero energy. They are also intended to provide examples of strengths and deficiencies in the design processes and tools used.

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Keywords Case study buildings, Construction process, Design process, Net-zero energy buildings (Net ZEBs)
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Athienitis, A. (Andreas), & O'Brien, W. (2015). Net ZEB case studies. In Modeling, Design, and Optimization of Net-Zero Energy Buildings (pp. 241–350). doi:10.1002/9783433604625.ch07