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

1997

Ehrlich, Charles K."Simulating the Visual Performance of Electrochromic Glazing for Solar Control."Journal of the Illuminating Engineering Society 27 (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.

O'Conner, Jennifer, Eleanor S Lee, Francis M Rubinstein, and Stephen E Selkowitz."Tips for Daylighting with Windows: The Integrated Approach." (1997).

Rubin, Michael D, Klaus von Rottkay, and Rebecca Powles."Window Optics."Solar Energy 62 (1997) 149-161.

1996

Rubin, Michael D, Klaus von Rottkay, Shi-Jie Wen, Nilgün Özer, and Jonathan L Slack."Optical Indices of Lithiated Electrochromic Oxides."Solar Energy Materials and Solar Cells 54.1-4 (1996) 49-57. DOI

von Rottkay, Klaus, Michael D Rubin, and Shi-Jie Wen."Optical Indices of Electrochromic Tungsten Oxide."Thin Solid Films 306.1 (1996) 10-16. DOI

Sullivan, Robert, Michael D Rubin, and Stephen E Selkowitz."Energy Performance Analysis of Prototype Electrochromic Windows."ASHRAE Transactions 103, Part 2 (1996) 149-156.

Turler, Daniel, Brent T Griffith, and Dariush K Arasteh."Laboratory Procedures for Using Infrared Thermography to Validate Heat Transfer Models."ASTM Third Symposium on Insulation Materials: Testing and Applications 3 (1996).

Klems, Joseph H, and Jeffrey L Warner."Solar Heat Gain Coefficient of Complex Fenestrations with a Venetian Blind for Differing Slat Tilt Angles."ASHRAE Symposium 103, Part 1 (1996).

Kisielowski, Christian F, Joachim Krüger, Sergei Ruvimov, Tadeusz Suski, Joel W Ager, Erin C Jones, Zuzanna Liliental-Weber, Michael D Rubin, Eicke R Weber, Michael D Bremser, Robert F Davis, and Joachim Krüger."Strain Related Phenomena in GaN Thin Films."Physical Review B 54.24 (1996) 17745-17753. DOI

Wen, Shi-Jie, John B Kerr, Michael D Rubin, Jonathan L Slack, and Klaus von Rottkay."Analysis of Durability in Lithium Nickel Oxide Electrochromic Materials and Devices."2nd International Meeting on Electrochromism (1996).

Wen, Shi-Jie, Klaus von Rottkay, and Michael D Rubin."Electrochromic Lithium Nickel Oxide Thin Film by Pulsed Laser Deposition."Electrochemical Society Meeting 96-24 (1996) 54-63.

von Rottkay, Klaus, Michael D Rubin, and John B Kerr."Optical Modeling of a Complete Electrochromic Device."2nd International Conference on Electrochromics (1996).

Özer, Nilgün, Carl M Lampert, and Michael D Rubin."Sol-Gel Deposited Electrochromic Films for Electrochromic Smart Window Glass."International Symposium on Glass Problems, International Commission on Glass (1996).

Sullivan, Robert, Eleanor S Lee, Michael D Rubin, and Stephen E Selkowitz."The Energy Performance of Electrochromic Windows in Heating-Dominated Geographic Locations."SPIE International Symposium on Optical Materials Technology for Energy Efficiency & Solar Energy Conversion XV (1996).

Moeck, Martin, Eleanor S Lee, Michael D Rubin, Robert Sullivan, and Stephen E Selkowitz."Visual Quality Assessment of Electrochromic and Conventional Glazings."SPIE Optical Materials Technology for Energy Efficiency and Solar Energy Conversion XV (1996).

Lee, Eleanor S, Liliana O Beltran, and Stephen E Selkowitz."Demonstration of a Light-Redirecting Skylight System at the Palm Springs Chamber of Commerce."1996 ACEEE Summer Study on Energy Efficiency in Buildings: Profiting from Energy Efficiency (1996).

Brown, Karl A, Carl Blumstein, Loren Lutzenhiser, Bruce Hackett, and Yu Joe Huang."Does the Air-Conditioning Engineering Rubric Work in Residences?."1996 ACEEE Summer Study on Energy Efficiency in Buildings (1996).

Frost, Karl J, Joseph H Eto, Dariush K Arasteh, and Mehry Yazdanian."The National Energy Requirements of Residential Windows in the U.S.: Today and Tomorrow."ACEEE 1996 Summer Study on Energy Efficiency in Buildings: Profiting from Energy Efficiency (1996).

Eto, Joseph H, Dariush K Arasteh, and Stephen E Selkowitz."Transforming the Market for Residential Windows: Design Considerations for DOE's Efficient Window Collaborative."1996 ACEEE Summer Study on Energy Efficiency in Buildings (1996).

Sullivan, Robert, Fredric A Beck, Dariush K Arasteh, and Stephen E Selkowitz."Energy Performance of Evacuated Glazings in Residential Buildings."ASHRAE 1996 Summer Meeting, June 22-26, 1996 102, Part 2 (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.

von Rottkay, Klaus, and Michael D Rubin."Optical Indices of Pyrolitic Tin-Oxide Glass."Materials Research Society 1996 Spring Meeting 426 (1996).

Papamichael, Konstantinos M, John LaPorta, Hannah L Chauvet, Deirdre Collins, Thomas Trzcinski, Jack A Thorpe, and Stephen E Selkowitz."The Building Design Advisor."ACADIA 1996 Conference (1996).

Moeck, Martin, and Stephen E Selkowitz."A computer-based daylight systems design tool."Automation in Construction 5 (1996).