| 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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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.

1989

Siminovitch, Michael J, Francis M Rubinstein, Rudolph R Verderber, and Douglas G Crawford."The Energy Conservation Potential Associated with Thermally Efficient Fluorescent Fixtures."AEE-World Energy Engineering Congress (1989).

Greenhouse, Daniel S, Ian L Bailey, Peter A Howarth, Sam M Berman, and Bernice E Rogowitz."Spatial Adaptation on Video Display Terminals."International Society for Optics and Photonics (SPIE) 1077 (1989) 27-34. DOI

Krause, Florentin, and Jonathan G Koomey."Unit Costs of Carbon Savings From Urban Trees, Rural Trees, and Electricity Conservation: A Utility Cost Perspective." (1989).

Grynberg, Anat."Validation of Radiance." (1989).

Ward, Gregory J, Francis M Rubinstein, and Anat Grynberg."Luminance in Computer-Aided Lighting Design."Building Simulation Conference (1989).

Rubinstein, Francis M, Rudolph R Verderber, and Gregory J Ward."Photoelectric Control of Daylight-Following Lighting Systems." (1989).

Clear, Robert D, and Sam M Berman."Speed, Accuracy, and VL."Journal of the Illuminating Engineering Society 19 (1989) 124-131.

1988

Berman, Sam M, Don L Jewett, George Fein, Glenn Y Saika, and F Ashford."Photopic Luminance Does Not Always Predict Perceived Room Brightness."Lighting Research and Technology 22.1 (1988) 37-41. DOI

Verderber, Rudolph R, Francis M Rubinstein, and Michael J Siminovitch."Control of Lamp Wall Temperature."IEEE-IAS Annual Conference (1988).

Verderber, Rudolph R, Oliver C Morse, and Francis M Rubinstein."Performance of Electronic Ballast and Controls with 34 and 40 Watt F40 Fluorescent Lamps."IEEE-IAS Annual Conference (1988).

Rubinstein, Francis M, Gregory J Ward, and Rudolph R Verderber."Improving the Performance of Photo-Electrically Controlled Lighting Systems."Annual IES Conference (1988).

Verderber, Rudolph R, and Michael J Siminovitch."Lighting Retrofit Considerations." (1988).

Verderber, Rudolph R."Status and Applications of New Lighting Technologies."Renewable Energy Technologies Symposium and International Exposition/The International Power Exhibition and Energy Conference (1988).

Verderber, Rudolph R, and Oliver C Morse."Performance of Electronic Ballasts and Other New Lighting Equipment (Phase II: The 34-Watt F40 Rapid Start T-12 Fluorescent Lamp)." (1988).

Ward, Gregory J, Francis M Rubinstein, and Robert D Clear."A Ray Tracing Solution for Diffuse Interreflection."Computer Graphics 22 (1988).

Clear, Robert D, and Sam M Berman."Estimation of Linear Interpolation Error."Journal of the Illuminating Engineering Society 18 (1988) 32-39.

Berman, Sam M, Daniel S Greenhouse, Ian L Bailey, Robert D Clear, and Thomas W Raasch."Human Electroretinogram Responses to Video Displays."Journal of Optometry and Vision Science 68 (1988) 645-662.

Jewett, Don L, Sam M Berman, M.R Greenberg, George Fein, and Richard M Nahass."The Lack of Effects on Human Muscle Strength of Light Spectrum and Low-Frequency Electromagnetic Radiation in Electric Lighting."Journal of the Illuminating Engineering Society (1988).

Verderber, Rudolph R."The Phase III - Efficient Lighting for U. S. Naval Ships - Interim Report." (1988).

1987

Clear, Robert D, and Sam M Berman."Lighting Recommendations as Input to Cost-Benefit Calculations."1987 IES National Conference (1987).

Verderber, Rudolph R, Oliver C Morse, Francis M Rubinstein, and Michael J Siminovitch."Measurement of Optical Efficiency of Fluorescent Luminaires."1987 IES National Conference (1987).

Morse, Oliver C, and Rudolph R Verderber."Cost Effective Lighting."NATO Advanced Study Institute Conference (1987).

Berman, Sam M, Don L Jewett, and Larry R Bingham."Comparison of Pupillary Responses to Low and High Frequency Lighting."21st Session of the Commission Internationale de lEclairage (CIE) 2 (1987).

Verderber, Rudolph R."Energy Efficient Lighting On Board Naval Ships: Phase II (The T-8 Lamp System)." (1987).

Ward, Gregory J, and Francis M Rubinstein."A New Technique for Computer Simulation of Illuminated Spaces."Journal of the Illuminating Engineering Society 17 (1987) 80-91.