| 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.

1996

Fujii, Hiroaki, Christian F Kisielowski, Joachim Krüger, Michael S.H Leung, Ralf Klockenbrink, Michael D Rubin, Eicke R Weber, and Joachim Krüger."Impact of Growth Temperature, Pressure and Strain on the Morphology of GaN Films."Materials Research Society Symposium N – III-V Nitrides 449 (1996) 227. DOI

Berman, Sam M, George Fein, Don L Jewett, Blaine R Benson, T.M Law, Alan M Myers, and Mark A Bullimore."Lighting Spectral Effect on Landolt C Performance is Enhanced by Blur and Abolished by Mydriasis."Journal of the Illuminating Engineering Society 25.1 (1996) 42-50.

Taha, Haider."Modeling impacts of increased urban vegetation on ozone air quality in the South Coast Air Basin."Atmospheric Environment 30 (1996) 3423-3430. DOI

Kisielowski, Christian F, Joachim Krüger, Michael S.H Leung, Ralf Klockenbrink, Hiroaki Fujii, Tadeusz Suski, Sudhir G Subramanya, Joel W Ager, Michael D Rubin, Eicke R Weber, and Joachim Krüger."Origin of Strain in GaN Thin Films."23rd International Conference on the Physics of Semiconductors 4 (1996) 513.

Anders, André, and T Schulke."Predicting Ion Charge State Distributions of Vacuum Arc Plasmas." (1996).

Anders, André."The Periodic Table of Vacuum Arc Charge State Distributions." (1996).

Anders, André, Ian G Brown, and R.G MacGill."Vacuum-Spark Metal Ion Source Based on a Modified Marx Generator." (1996).

1995

Özer, Nilgün, Carl M Lampert, and Michael D Rubin."Optical and Electrochemical Characteristics of Niobium Oxide Films Prepared by Sol-Gel Process and Magnetron Sputtering: A Comparison."Solar Energy Materials and Solar Cells 40.4 (1995) 285-296. DOI

Özer, Nilgün, Din-Guo Chen, and Carl M Lampert."Preparation and Properties of Spin-Coated Nb₂O₅ Films by the Sol-Gel Process for Electrochemical Applications."Thin Solid Films 277.1-2 (1995) 162-168.

Chan, James S, Nathan W Cheung, Lawrence F Schloss, Erin C Jones, William S Wong, Nathan Newman, Xiaohong Liu, Eicke R Weber, A Gassman, and Michael D Rubin."Thermal Annealing Characteristics of Si and Mg-implanted GaN Thin Films."Applied Physics Letters 68.19 (1995) 2702-2704. DOI

Klems, Joseph H, Jeffrey L Warner, and Guy O Kelley."A Comparison Between Calculated and Measured SHGC For Complex Fenestration Systems."ASHRAE Transactions 102, Part 1 (1995).

Finlayson, Elizabeth U, Dariush K Arasteh, Michael D Rubin, John Sadlier, Robert Sullivan, Charlie Huizenga, Dragan C Curcija, and Mark Beall."Advances in Thermal and Optical Simulations of Fenestration Systems: The Development of WINDOW 5."Thermal Performance of the Exterior Envelopes of Buildings VI Conference (1995).

Koomey, Jonathan G, Mike Cramer, Mary Ann Piette, and Joseph H Eto."Efficiency Improvements in U.S. Office Equipment: Expected Policy Impacts and Uncertainties." (1995).

Özer, Nilgün, and Carl M Lampert."Electrochemical Lithium Insertion in Sol-gel Deposited LiNbO₃ Films."Solar Energy Materials and Solar Cells 39.2-4 (1995) 367-375. DOI

Griffith, Brent T, Fredric A Beck, Dariush K Arasteh, and Daniel Turler."Issues Associated with the Use of Infrared Thermography for Experimental Testing of Insulated Systems."Thermal Performance of the Exterior Envelopes of Buildings VI Conference (1995).

Koomey, Jonathan G, Alan H Sanstad, and Leslie J Shown."Magnetic Fluorescent Ballasts: Market Data, Market Imperfections, and Policy Success." (1995).

Klems, Joseph H, Mehry Yazdanian, and Guy O Kelley."Measured Performance of Selective Glazings."Thermal Performance of the Exterior Envelopes of Buildings VI Conference (1995).

Sullivan, Robert, Michael D Rubin, and Stephen E Selkowitz."Reducing Residential Cooling Requirements Through the Use of Electrochromic Windows."Proceedings of the Thermal Performance of the Exterior Envelopes of Buildings VI Conference (1995).

Koomey, Jonathan G, Richard E Brown, R. R Cooper Richey, Francis X Johnson, Alan H Sanstad, and Leslie J Shown."Residential Sector End-use Forecasting with EPRI-REEPS 2.1: Summary Input Assumptions and Results." (1995).

Griffith, Brent T, Daniel Turler, and Dariush K Arasteh."Surface Temperatures of Insulated Glazing Units: Infrared Thermography Laboratory Measurements."ASHRAE Transactions 102.2 (1995).

Sezgen, Osman, and Jonathan G Koomey."Technology data characterizing refrigeration in commercial buildings: Application to end-use forecasting with COMMEND 4.0." (1995).

Griffith, Brent T, Dariush K Arasteh, and Daniel Turler."Gas Filled Panels: An Update on Applications in the Building Thermal Envelope."BETEC Fall Symposium, Superinsulations and the Building Envelope (1995).

Anders, André, and Simone Anders."Working Principle of the Hollow-Anode Plasma Source."Plasma Source Science and Technology 4.4 (1995) 571-575. DOI

Jennings, Judy D, Richard E Brown, Mithra M Moezzi, Evan Mills, and Robert Sardinsky."An Assessment of the U.S. Residential Lighting Market." (1995).

Salsbury, Tim I, Philip Haves, and Jonathan A Wright."A Fault Detection and Diagnosis Method Based on First Principles Models and Expert Rules."Tsinghua HVAC-95 (1995).