| 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.

1984

Jorgenson, Gordon."A Literature Study on Electrochromic and Thermochromic Materials: Final Report." (1984).

Siminovitch, Michael J, Francis M Rubinstein, and Rudolph R Verderber."An Experimental Methodology for Determining the System Performance of Fluorescent Lamp, Ballast, Fixture Combinations Operating Under Realistic Application Conditions." (1984).

Clear, Robert D, and Sam M Berman."Analysis of a Visual Performance Experiment."Journal of the Illuminating Engineering Society 14 (1984) 448-465.

Karayel, Mahmut, Mojtaba Navvab, Eliyahu Neeman, and Stephen E Selkowitz."Daylight Availability Data for San Francisco."Energy and Buildings 6 (1984) 273-281.

Siminovitch, Michael J, Francis M Rubinstein, and Rudolph R Verderber."Determining Lamp/Ballast System Performance with a Temperature Controlled Integrating Chamber."Journal of the Illuminating Engineering Society 14 (1984) 364-378.

Lampert, Carl M."Electrochromic Materials and Devices for Energy-Efficient Windows."Solar Energy Materials 11 (1984).

Lampert, Carl M."Electrochromic Materials for the Regulation of Solar Energy Transmission through Windows." (1984).

Klems, Joseph H."Error Analysis of In-Situ Field Tests of Fenestration Performance."Energy and Buildings 8 (1984) 165-173.

Borgers, Tom R, and Hashem Akbari."Free convective turbulent flow within the trombe wall channel."Solar Energy 33.3-4 (1984) 253-264. DOI

Johnson, Russell, Robert Sullivan, Stephen E Selkowitz, Shirley Nozaki, Craig Conner, and Dariush K Arasteh."Glazing Energy Performance and Design Optimization with Daylighting."Energy and Buildings 6.4 (1984) 305-317. DOI

Klems, Joseph H."Measurement of Fenestration Net Energy Performance: Considerations Leading to Development of the Mobile Window Thermal Test (MoWiTT) Facility."Journal of Solar Energy Engineering (1984).

Selkowitz, Stephen E."Nomographs for Predesign Analysis of the Potential Electrical Eenrgy and Load Savings from Daylighting." (1984).

Neeman, Eliyahu, Glenn Sweitzer, and Edward L Vine."Office Worker Response to Lighting and Daylighting Issues in Workspace Environments: A Pilot Survey."Energy and Buildings 6 (1984) 159-171.

Verderber, Rudolph R."Review of Lighting Control Equipment and Applications."Lighting Design + Application 16 (1984).

Choi, U.S, Russell Johnson, and Stephen E Selkowitz."The Impact of Daylighting on Peak Electrical Demand."Energy and Buildings 6.4 (1984) 387-399. DOI

Neeman, Eliyahu, and Stephen E Selkowitz."Windows, Skylights and Atria - Occupants Visual/Subjective Comparison."ASHRAE Transactions 90 (1984).

1983

Neeman, Eliyahu, and Stephen E Selkowitz."Daylight Availability as a Function of Atmospheric Conditions."5th Conference on Atmospheric Radiation (1983).

Haves, Philip."SERI-RES: a Thermal Simulation Model for Passive Solar and Low Energy Buildings."Design methods for Passive Solar Buildings Conf (1983).

Selkowitz, Stephen E, and Carl M Lampert."Advanced Optical and Thermal Technologies for Aperature Control."Passive and Hybrid Solar Energy Update (1983).

Berman, Sam M, Daniel S Greenhouse, Ian L Bailey, and Arthur Bradley."Experimental Studies Relating Environmental Lighting Flicker to Visual Fatigue in VDT Operators."20th Session of CIE (CIE Session 83) (1983).

Research, Lighting Systems."Energy-Efficient H.I.D. Solid-State Ballast: Phase II Final Report." (1983).

Selkowitz, Stephen E, Russell Johnson, Robert Sullivan, and S Choi."Impact of Fenestration on Energy Use and Peak Loads in Daylighted Commercial Buildings."8th National Passive Solar Conference (1983) 187-192.

Selkowitz, Stephen E."New Tools for Analyzing Thermal and Daylighting Performance of Fenestration in Multistory Buildings."International Symposium on the Design of Multistory Buildings for Physical and Environmental Performance, June 1-3, 1983 (1983).

Haves, Philip."Selection and Sizing of Low Energy Cooling Systems for More Humid Climates."2nd International Passive and Low Energy Architecture Conference (1983).

Eto, Joseph H."Optimal Cogeneration Systems for High-Rise Office Buildings."18th Intersociety Energy Conversion Engineering Conference (1983).