This conference paper discusses four well-documented definitions of net-zero energy: net-zero site energy, net-zero source energy, net-zero energy costs, and net-zero energy emissions, along with pluses and minuses of each.
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This paper describes how net-zero energy buildings will produce, during a typical year, enough renewable energy to offset the energy they consume from the grid.
This paper introduces a classification system for net-zero energy buildings (ZEB) based on the renewable sources a building uses.
"This study, commissioned by the Continental Automated Buildings Association (CABA), and conducted by the New Buildings Institute (NBI), details how existing and emerging building monitoring and control technologies are helping designers, owners, operators and occupants achieve and maintain zero net energy (ZNE) buildings."
Low energy or high-performance buildings form a vital component in the sustainable future of building design and construction. Rigorous integrated daylighting design and simulation will be critical to their success as energy efficiency becomes a requirement, because electric lighting usually represents a large fraction of the energy consumed. We present the process and tools used to design the lighting systems in the newest building at the National Renewable Energy Laboratory (NREL), the Research Support Facility (RSF). Daylighting had to be integrated with the electric lighting, as low energy use (50% below ASHRAE 90.1-2004) and the LEED daylight credit were contractually required, with a reach goal of being a net-zero energy building (NZEB). The oft-ignored disconnect between lighting simulation and whole-building energy use simulation had to be addressed, as ultimately all simulation efforts had to translate to energy use intensity predictions, design responses, and preconstruction substantiation of the design. We present preliminary data from the postoccupancy monitoring efforts with an eye toward the current efficacy of energy and lighting simulation methodologies.
This paper illustrates the challenges of integrating rigorous daylight and electric lighting simulation data with whole-building energy models, and defends the need for such integration in order to achieve aggressive energy savings in building designs. Through a case study example, we examine the ways daylighting – and daylighting simulation – drove the design of a large net-zero energy project.
McGraw Hill Construction Continuing Education Article December 2010 - This article discusses the energy efficiency and cost competitiveness of the Research Support Facility.
This case study highlights the design, implementation strategies, and continuous performance monitoring of NREL's Research Support Facility data center.
Low Energy Buildings: Management, Operations, and Maintenance presentation given at the NASA Net-Zero Energy workshop June 5-6, 2012
Presentation slides from Low Energy Buildings: Management, Operations, and Maintenance presentation given at the NASA Net-Zero Energy workshop June 5-6, 2012.