The energy performance of six high-performance buildings around the United States wasmonitored in detail. The six buildings include the Visitor Center at Zion National Park; theNational Renewable Energy Laboratory Thermal Test Facility, the Chesapeake Bay FoundationMerrill Center, the BigHorn Home Improvement Center; the Cambria DEP Office Building; andthe Oberlin College Lewis Center.Evaluations began with extensive monitoring for a minimum of one year, which was usedto calibrate energy simulation models. This paper will discuss differences between the designenergy targets and actual performance, common mistakes in implementing "state-of-the shelf"building technologies, commissioning experiences, policy implications, and lessons learned forfuture buildings. Overall, energy performance of the buildings will be compared to each otherand to code compliant base-case buildings.The owners and design teams for each building had aggressive energy saving goalsranging from 40% to a net-zero energy performance. Some of the design teams also hadambitious goals regarding other dimensions of sustainability such as water management, buildingmaterials selection, or obtaining a high LEED? score. The focus of this paper is on energyperformance. Computer simulations were used for each building during the design process. Allbuildings used daylighting and good thermal envelopes as part of their high-performancefeatures. Other high-performance features include mechanical and passive evaporative cooling,radiant heating, natural ventilation, mixed-mode ventilation, ground source heat pumps,photovoltaic, and passive solar strategies. A set of performance metrics are presented anddiscussed. All of the buildings used much less energy on an annualized basis than comparablecode compliant buildings.
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