| Building Technology and Urban Systems

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.

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2001

Akbari, Hashem, and Leanna S Rose."Characterizing the fabric of the urban environment: a case study of Salt Lake City, Utah." (2001).

Kawamoto, Kaoru, Jonathan G Koomey, Michael K Ting, Bruce Nordman, Richard E Brown, Mary Ann Piette, and Alan K Meier."Electricity Used by Office Equipment and Network Equipment in the U.S.: Detailed Report and Appendices." (2001).

Osborn, Julie G, Frances Wood, R. R Cooper Richey, Sandy Sanders, Walter Short, and Jonathan G Koomey."A Sensitivity Analysis of the Treatment of Wind Energy in the AEO99 Version of NEMS." (2001) 43.

Eto, Joseph H, and Dariush K Arasteh."A Sourcebook for Residential Window Market Transformation." (2001).

Ehrlich, Charles K, Konstantinos M Papamichael, Judy Lai, and Kenneth L Revzan."A Method for Simulating the Performance of Photosensor-Based Lighting Controls."Energy and Buildings 34 (2001) 883-889.

Akbari, Hashem, Melvin Pomerantz, and Haider Taha."Cool surfaces and shade trees to reduce energy use and improve air quality in urban areas."Solar Energy 70 (2001) 295-310. DOI

Ruck, Nancy, Øyvind Aschehoug, Sirri Aydinli, Jens Christoffersen, Gilles Courret, Ian Edmonds, Roman Jakobiak, Martin Kischkoweit-Lopin, Martin Klinger, Eleanor S Lee, Laurent Michel, Jean-Louis Scartezzini, and Stephen E Selkowitz."Daylight in Buildings. A Source Book on Daylighting Systems and Components." (2001).

Konopacki, Steven J, and Hashem Akbari."Energy impacts of heat island reduction strategies in the greater Toronto Area, Canada." (2001).

Rubinstein, Francis M, and Pete Pettler."Final Report on Internet Addressable Light Switch." (2001).

Wetter, Michael, Roberto Lamberts, Cezar O. R Negrão, and Jan Hensen."GenOpt - A Generic Optimization Program."Proceedings of the 7th IBPSA Conference I (2001) 601-608.

Rubinstein, Francis M, and Pete Pettler."IBECS Network/Ballast Interface - Final Report." (2001).

Jennings, Judy D, Nesrin Colak, and Francis M Rubinstein."Occupancy and Time-Based Lighting Controls in Open Offices."Journal of the Illuminating Engineering Society 31 (2001) 86-100.

Taha, Haider."Potential impacts of climate change on tropospheric ozone in California: A preliminary episodic modeling assessment of the Los Angeles Basin and the Sacramento Valley." (2001).

Ting, Michael K, Jonathan G Koomey, and Melvin Pomerantz."Preliminary evaluation of the lifecycle costs and market barriers of reflective pavements." (2001). DOI

Klems, Joseph H."Solar Heat Gain through Fenestration Systems Containing Shading: Summary of Procedures for Estimating Performance from Minimal Data." 108, Part 1 (2001) 512-524.

Arney, Michael, James Fairman, John Carmody, and Dariush K Arasteh."The Integrated Energy-Efficiency Window-Wall System." (2001).

Group, Windows and Daylighting."THERM 5.0 User's Manual." (2001).

Mitchell, Robin, Christian Kohler, Dariush K Arasteh, Charlie Huizenga, and Dragan C Curcija."WINDOW 5.0 User Manual for Analyzing Window Thermal Performance." (2001).

2000

Gustavsen, Arlid, Brent T Griffith, and Dariush K Arasteh."Natural Convection Effects in Three-Dimensional Window Frames with Internal Cavities."ASHRAE Transactions 107, Part 2 (2000).

Gustavsen, Arlid, Brent T Griffith, and Dariush K Arasteh."Three-Dimensional Conjugate Computational Fluid Dynamics Simulations of Internal Window Frame Cavities Validated Using IR Thermography."ASHRAE Transactions 107.2 (2000) 538-549.

Akbari, Hashem, and Leo I Rainer."Measured energy savings from the application of reflective roofs in 3 AT&T regeneration buildings." (2000).

Rubin, Michael D, and Rebecca Powles."Optical Properties of Glazing Materials at Normal Incidence."Revista della Statzione Sperimentale del Vetro (2000) 13-16.

Levinson, Ronnen M, William W Delp, Darryl J Dickerhoff, and Mark P Modera."Effects of airflow infiltration on the thermal performance of internally insulated ducts."Energy and Buildings 32.3 (2000) 345-354. DOI

Huang, Yu Joe, and Jim Brodrick."A bottom-up engineering estimate of the aggregate heating and cooling loads of the entire U.S. building stock."2000 ACEEE Summer Study on Energy Efficiency in Buildings (2000).

Wenzel, Thomas P, and Robert Sawyer."Analysis of a State Data on In-Use Emissions from Motor Vehicles (EPA Interagency Agreement DW89938103-01-1): Review of Work Completed." (2000).