About Us +
Researchers in the Building Technology & Urban Systems Division (BTUS) at Lawrence Berkeley National Laboratory develop data and technologies that increase energy efficiency and improve the health, safety and comfort of building occupants, in the United States and worldwide.

We work closely with industry partners, academics and government officials to achieve these goals, and share our research widely
Research +
We are at the forefront of cutting-edge research that redefines building technology and explores all areas of urban systems.

We have been leaders for decades in developing energy-efficient windows, improving indoor air quality, coming up with new ideas to fix the nation's electricity grid, and so much more.

Visit our research areas at the right to find out more.
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Publications +
Enjoy presentations from Building Technology & Urban systems research experts on a wide variety of topics in the areas of building energy efficiency, the electricity grid and how it relates to buildings and much more.
- Presentations
News
Tools & Guides +
Explore our tools, guidebooks and software and download for free.

We offer a variety of technologies designed to simulate and model real-world circumstances to assist in energy-saving programs and help building owners build better buildings. These tools can help calculate performance of building systems like windows and shades, help consumers and builders pick the best windows for a variety of applications and much more.

Publications

Publications By Research Area

2012

Lee, Eleanor S, Erin S Claybaugh, and Marc LaFrance."End User Impacts of Automated Electrochromic Windows in a Pilot Retrofit Application."Energy and Buildings 47.April 2012 (2012) 267-284. DOI

2011

Zuo, Wangda, Andrew McNeil, Michael Wetter, and Eleanor S Lee."Acceleration of Radiance for Lighting Simulation by using Parallel Computing with OpenCL."12th International Conference of the International Building Performance Simulation Association (Building Simulation 2011) (2011) p. 110-117.

Coffey, Brian E, and Eleanor S Lee."Model-based controls for integrated shading and UFAD control: Report on initial studies." (2011).

Nouidui, Thierry Stephane, Andrew McNeil, Christian Kohler, Brian E Coffey, and Eleanor S Lee."Modeling solar heat gains of complex fenestration systems using bidirectional scattering distribution functions." (2011).

Ward, Gregory J, Richard G Mistrick, Eleanor S Lee, Andrew McNeil, and Jacob C Jonsson."Simulating the Daylight Performance of Complex Fenestration Systems Using Bidirectional Scattering Distribution Functions within Radiance."Leukos, The Journal of the Illuminating Engineering Society 7.4 (2011). DOI

Park, Byoung-Chul, An-Seop Choi, Jae-Weon Jeong, and Eleanor S Lee."Performance of Integrated Systems of Automated Roller Shade Systems and Daylight Responsive Dimming Systems."Building and Environment 46.3 (2011) 747-757. DOI

Konis, Kyle S, Eleanor S Lee, and Robert D Clear."Visual Comfort Analysis of Innovative Interior and Exterior Shading Systems for Commercial Buildings using High Resolution Luminance Images."LEUKOS The Journal of the Illuminating Engineering Society of North America 7.3 (2011). DOI

2009

Lee, Eleanor S, Stephen E Selkowitz, Dennis L DiBartolomeo, Joseph H Klems, Robert D Clear, Kyle S Konis, Robert J Hitchcock, Mehry Yazdanian, Robin Mitchell, and Maria Konstantoglou."High Performance Building Facade Solutions: PIER Final Project Report." (2009).

Lee, Eleanor S, Stephen E Selkowitz, Dennis L DiBartolomeo, Joseph H Klems, Robert D Clear, Kyle S Konis, Maria Konstantoglou, and Mark Perepelitza."Innovative Façade Systems for Low-energy Commercial Buildings." (2009).

Lee, Eleanor S, Dennis L DiBartolomeo, Joseph H Klems, Robert D Clear, Kyle S Konis, Mehry Yazdanian, and Byoung-Chul Park."Field Measurements of Innovative Indoor Shading Systems in a Full-Scale Office Testbed."ASHRAE Transactions 115.2 (2009) 706-728.

Mardaljevic, John, Lisa Heschong, and Eleanor S Lee."Daylight metrics and energy savings."Lighting Research + Technology 41.3 (2009) 261-283. DOI

Konstantoglou, Maria, Jacob C Jonsson, and Eleanor S Lee."Simulating Complex Window Systems Using BSDF Data."26th Conference on Passive and Low Energy Architecture (PLEA), June-22-24 (2009).

2008

Jonsson, Jacob C, Eleanor S Lee, and Michael D Rubin."Light-scattering properties of a woven shade-screen material used for daylighting and solar heat-gain control."SPIE Optics+Photonics (2008).

2007

Lee, Eleanor S, Glenn D Hughes, Robert D Clear, Luis L Fernandes, Sila Kiliccote, Mary Ann Piette, Francis M Rubinstein, and Stephen E Selkowitz."Daylighting the New York Times Headquarters Building: Final Report: Commissioning Daylighting Systems and Estimation of Demand Response." (2007).

Lee, Eleanor S, and Aslihan Tavil."Energy and visual comfort performance of electrochromic windows with overhangs."Building and Environment 42.6 (2007) 2439-2449. DOI

Lee, Eleanor S, Robert D Clear, Gregory J Ward, and Luis L Fernandes."Commissioning and verification procedures for the automated roller shade system at The New York Times Headquarters." (2007).

Lee, Eleanor S, Robert D Clear, Gregory J Ward, and Luis L Fernandes."Quick Start Guide: Commissioning and verification procedures for the automated roller shade system at The New York Times Headquarters." (2007).

2006

Lee, Eleanor S, Dennis L DiBartolomeo, Joseph H Klems, Mehry Yazdanian, and Stephen E Selkowitz."Monitored Energy Performance of Electrochromic Windows Controlled for Daylight and Visual Comfort."2006 ASHRAE Annual Meeting 112 Issue 2 (2006).

Clear, Robert D, Vorapat Inkarojrit, and Eleanor S Lee."Subject Response to Electrochromic Windows."Energy and Buildings 38.7 (2006) 758-779. DOI

Lee, Eleanor S, Stephen E Selkowitz, Robert D Clear, Dennis L DiBartolomeo, Joseph H Klems, Luis L Fernandes, Gregory J Ward, Vorapat Inkarojrit, and Mehry Yazdanian."Advancement of Electrochromic Windows." (2006).

Lee, Eleanor S, Stephen E Selkowitz, Robert D Clear, Dennis L DiBartolomeo, Joseph H Klems, Luis L Fernandes, Gregory J Ward, Vorapat Inkarojrit, and Mehry Yazdanian."A Design Guide for Early-Market Electrochromic Windows." (2006).

Tavil, Aslihan, and Eleanor S Lee."Effects of Overhangs on the Performance of Electrochromic Windows."Architectural Science Review (2006).

Lee, Eleanor S, and Stephen E Selkowitz."The New York Times Headquarters Daylighting Mockup: Monitored Performance of the Daylighting Control System."Energy & Buildings 38 (2006) 914-929.

2005

Tavil, Aslihan, and Eleanor S Lee."The Impact of Overhang Designs on the Performance of Electrochromic Windows."ISES 2005 Solar World Congress (2005).

Lee, Eleanor S, Stephen E Selkowitz, Glenn D Hughes, Robert D Clear, Gregory J Ward, John Mardaljevic, Judy Lai, Mehlika Inanici, and Vorapat Inkarojrit."Daylighting the New York Times Headquarters Building: Final Report." (2005).