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.
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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: Intelligent Façades

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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).

2008

Wetter, Michael, and Philip Haves."A Modular Building Controls Virtual Test Bed for the Integration of Heterogeneous Systems."SimBuild 2008, July 30-August 1 (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).

Hughes, Glenn D.."Moving from Niche to Mainstream Markets: Addressing the High Cost of Daylighting Systems." (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

Kiliccote, Sila, Mary Ann Piette, David S. Watson, and Glenn D. Hughes."Dynamic Controls for Energy Efficiency and Demand Response: Framework Concepts and a New Construction Case Study in New York."2006 ACEEE Summer Study on Energy Efficiency in Buildings (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."Advancement of Electrochromic Windows." (2006).

Clear, Robert D.."Summary results of visual comfort measurements at the electrochromic windows testbed." (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).

Lee, Eleanor S., Dennis L. DiBartolomeo, and Stephen E. Selkowitz."Daylighting control performance of a thin-film ceramic electrochromic window: Field study results."Energy and Buildings 38 (2005) 30-44.

2004

Kohler, Christian, Howdy Goudey, and Dariush K. Arasteh."A First-Generation Prototype Dynamic Residential Window." (2004) 11.

Lee, Eleanor S., Stephen E. Selkowitz, Glenn D. Hughes, and David A. Thurm."Market Transformation Opportunities for Emerging Dynamic Facade and Dimmable Lighting Control Systems."2004 ACEEE Summer Study on Energy Efficiency in Buildings (2004).

Selkowitz, Stephen E., and Eleanor S. Lee."Integrating Automated Shading and Smart Glazings with Daylight Controls."International Symposium on Daylighting Buildings (2004) B13-B20.

Lee, Eleanor S., Mehry Yazdanian, and Stephen E. Selkowitz."The Energy-Savings Potential of Electrochromic Windows in the US Commercial Buildings Sector." (2004).

Lee, Eleanor S., Dennis L. DiBartolomeo, Francis M. Rubinstein, and Stephen E. Selkowitz."Low-Cost Networking for Dynamic Window Systems."Energy and Buildings 36 (2004) 503-513.

2003

Selkowitz, Stephen E., Øyvind Aschehoug, and Eleanor S. Lee."Advanced Interactive Façades — Critical Elements for Future Green Buildings?."GreenBuild, the annual USGBC International Conference and Expo (2003).

Selkowitz, Stephen E., Eleanor S. Lee, and Øyvind Aschehoug."Perspectives on Advanced Façades with Dynamic Glazings and Integrated Lighting Controls."CISBAT 2003, Innovation in Building Envelopes and Environmental Systems, International Conferences on Solar Energy in Buildings (2003).