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

2014

Fernandes, Luis L., Eleanor S. Lee, Dennis L. DiBartolomeo, and Andrew McNeil."Monitored lighting energy savings from dimmable lighting controls in The New York Times Headquarters Building."Energy and Buildings 68.A (2014) 498-514. DOI

2013

Lee, Eleanor S., Luis L. Fernandes, Howdy Goudey, Jacob C. Jonsson, Dragan C. Curcija, Xiufeng Pang, Dennis L. DiBartolomeo, and Sabine Hoffmann."A Pilot Demonstration of Electrochromic and Thermochromic Windows in the Denver Federal Center, Building 41, Denver, Colorado." (2013).

2011

Wen, Yao-Jung, Dennis L. DiBartolomeo, Francis M. Rubinstein, and Antonio Ruzzelli."Co-simulation based building controls implementation with networked sensors and actuators."Third ACM Workshop on Embedded Sensing Systems for Energy-Efficiency in Buildings Proceedings of BuildSys 2011 (2011) 55. 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.

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).

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).

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

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.

2002

Lee, Eleanor S., and Dennis L. DiBartolomeo."Application issues for large-area electrochromic windows in commercial buildings."Solar Energy Materials and Solar Cells 71.4 (2002) 465–491. DOI

2000

Lee, Eleanor S., Dennis L. DiBartolomeo, and Stephen E. Selkowitz."Electrochromic Windows for Commercial Buildings: Monitored Results from a Full-Scale Testbed."ACEEE 2000 Summer Study on Energy Efficiency in Buildings, Efficiency and Sustainability, August 20-25, 2000 (2000).

Jennings, Judy D., Francis M. Rubinstein, Dennis L. DiBartolomeo, and Steven L. Blanc."Comparison of Control Options in Private Offices in an Advanced Lighting Controls Testbed."Journal of the Illuminating Engineering Society (2000).

1998

Lee, Eleanor S., Dennis L. DiBartolomeo, and Stephen E. Selkowitz."Thermal and daylighting performance of an automated venetian blind and lighting system in a full-scale private office."Energy and Buildings 29.1 (1998) 47–63. DOI

Vine, Edward L., Eleanor S. Lee, Robert D. Clear, Dennis L. DiBartolomeo, and Stephen E. Selkowitz."Office Worker Response to an Automated Venetian Blind and Electric Lighting System: A Pilot Study."Energy and Buildings 28.2 (1998) 205-218. DOI

Lee, Eleanor S., Dennis L. DiBartolomeo, Edward L. Vine, and Stephen E. Selkowitz."Integrated Performance of an Automated Venetian Blind/Electric Lighting System in a Full-Scale Private Office."ASHRAE/DOE/BTECC Conference, Thermal Performance of the Exterior Envelopes of Buildings VII (1998).

Lee, Eleanor S., Dennis L. DiBartolomeo, and Stephen E. Selkowitz."The Effect of Venetian Blinds on Daylight Photoelectric Control Performance."Journal of the Illuminating Engineering Society 28 (1998).

1997

Lee, Eleanor S., Dennis L. DiBartolomeo, and Stephen E. Selkowitz."Thermal and Daylighting of an Automated Venetian Blind and Lighting System in a Full-Scale Private Office."Energy and Buildings 29 (1997) 47-63.

1996

DiBartolomeo, Dennis L., Eleanor S. Lee, Francis M. Rubinstein, and Stephen E. Selkowitz."Developing a Dynamic Envelope/Lighting Control System with Field Measurements."Journal of the Illuminating Engineering Society 26 (1996) 146-164.

1994

Lee, Eleanor S., Stephen E. Selkowitz, Francis M. Rubinstein, Joseph H. Klems, Liliana O. Beltran, and Dennis L. DiBartolomeo."A Comprehensive Approach to Integrated Envelope and Lighting Systems for New Commercial Buildings."ACEEE 1994 Summer Study on Energy Efficiency in Buildings (1994).

Lee, Eleanor S., Stephen E. Selkowitz, Francis M. Rubinstein, Joseph H. Klems, Liliana O. Beltran, Dennis L. DiBartolomeo, and Robert Sullivan."Developing Integrated Envelope and Lighting Systems for Commercial Buildings."Solar '94: Golden Opportunities for Solar Prosperity (1994).

1993

Selkowitz, Stephen E., Eleanor S. Lee, Francis M. Rubinstein, Joseph H. Klems, Konstantinos M. Papamichael, Liliana O. Beltran, Dennis L. DiBartolomeo, and Robert Sullivan."Realizing the DSM Potential of Integrated Envelope and Lighting Systems."2nd National New Construction Programs for Demand-Side Management Conference (1993).

1985

DiBartolomeo, Dennis L., and Joseph H. Klems."Simple Phase-Sensitive Detector for Wheatstone Bridge Resistance Measurements."Review of Scientific Instruments 56 (1985) 755-757.

1982

Klems, Joseph H., and Dennis L. DiBartolomeo."Large-Area, High-Sensitivity Heat-Flow Sensor."Review of Scientific Instruments 53 (1982) 1609-1612.