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

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.

Berman, Sam M, Don L Jewett, Larry R Bingham, Richard M Nahass, Franklin Perry, and George Fein."Pupillary Size Differences Under Incandescent and High Pressure Sodium Lamps."Journal of the Illuminating Engineering Society Winter (1987) 3-20.

Clear, Robert D, and Sam M Berman."To Average, or Not To Average."Lighting Design + Application 17 (1987) 28-31.

1986

Verderber, Rudolph R, James E Jewell, and Oliver C Morse."Building Design: Impact on the Lighting Control System for a Daylighting Strategy."1987 IEEE-IAS Annual Meeting (1986).

Rubinstein, Francis M, Gregory J Ward, and Rudolph R Verderber."The Effect of Control Algorithm Photosensor Response on the Performance of Daylight Linked Lighting Systems."1986 International Daylighting Conference (1986).

Rubinstein, Francis M, T. T Alan Clark, Michael J Siminovitch, and Rudolph R Verderber."The Effect of Lighting System Components on Lighting Quality, Energy Use, and Life-Cycle Cost."1986 IEEE-IAS National Conference (1986).

Clark, T. T Alan, Francis M Rubinstein, Michael J Siminovitch, and Rudolph R Verderber."The Effects of Fixture Type and HVAC Integration on Fluorescent Lamp-Ballast Performance."1986 IEEE-IAS National Conference (1986).

Hollister, Donald D."Overview of Advances in Light Sources."SPIE Conference (1986).

Verderber, Rudolph R."Energy and Lighting Decisions."ASEAN Workshop (1986).

Zhou, T, L Wang, Donald D Hollister, Sam M Berman, and Robert W Richardson."Magnetic Enhancement of Ultraviolet Radiation Efficiency of Low Pressure Hg-Ar Discharge."Journal of the Illuminating Engineering Society 16.1 (1986) 176-181. DOI

Clark, T. T Alan, Francis M Rubinstein, Michael J Siminovitch, and Rudolph R Verderber."Maintaining Optimum Fluorescent Lamp Performance Under Elevated Temperature Conditions."Lighting Design + Application 17 (1986) 35-41.

Berman, Sam M, and Robert W Richardson."Determination of the Excited State Density of an Optically Thick Line."Journal of Quantitative Spectroscopy and Radiation Transfer 37 (1986) 471-475.