| 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.

1980

Selkowitz, Stephen E, and Russell Johnson."The Daylighting Solution."Solar Age (1980) 14-20.

Bryan, Harvey J, and Robert D Clear."A Procedure for Calculating Interior Daylight Ilumination."5th National Passive Solar Conference (1980).

Lampert, Carl M."Thin Film Electrochromic Materials for Energy Efficient Windows." (1980).

Weidt, John L, and Jenny Weidt."Air Leakage of Newly Installed Residential Windows." (1980).

Bryan, Harvey J, and Robert D Clear."Calculating Interior Daylight Illumination with a Programmable Hand Calculator."Journal of the Illuminating Engineering Society 07/1981 (1980) 219-227.

King, William J."High Performance Solar Control Windows, Final Report." (1980).

Rubin, Michael D, Richard Creswick, and Stephen E Selkowitz."Transparent Heat Mirrors for Windows: Thermal Performance."5th National Passive Solar Conference (1980) 990-994.

1979

Bryan, Harvey J."A Simplified Procedure for Calculating the Effects of Daylight from Clear Skies."Illuminating Engineering Society Annual Technical Conference (1979).

Akbari, Hashem, and Tom R Borgers."Free convective laminar flow within the trombe wall channel."Solar Energy 22.2 (1979) 165-174. DOI

Goldstein, David B, and Metin Lokmanhekim."A Simple Method for Computing the Dynamic Response of Passive Solar Buildings to Design Weather Conditions."Alternative Energy Sources II (1979).

Selkowitz, Stephen E, Michael D Rubin, and Richard Creswick."Average Transmittance Factors for Multiple Glazed Window Systems."4th National Passive Solar Conference (1979) 383-386.

Lampert, Carl M."Coatings for Enhanced Photothermal Energy Collection II: Non-Selective and Energy Control Films."Solar Energy Materials 2 (1979).

Selkowitz, Stephen E."Daylighting and Passive Solar Buildings."3rd National Passive Solar Conference (1979) 271-281.

Goldstein, David B, Metin Lokmanhekim, and Robert D Clear."Design Calculations for Passive Solar Buildings by a Programmable Hand Calculator." (1979).

Weidt, John L, Jenny Weidt, and Stephen E Selkowitz."Field Air Leakage of Newly Installed Residential Windows."ASHRAE Transactions 85.1 (1979) 149-159.

Goldstein, David B."Modeling Passive Solar Buildings with Hand Calculations."3rd National Passive Solar Conference (1979) 164-169.

Selkowitz, Stephen E, and Vladimir Bazjanac."Thermal Performance of Managed Window Systems."ASHRAE Transactions 85 (1979).

Selkowitz, Stephen E."Transparent Heat Mirrors for Passive Solar Heating Applications."Passive Systems 78 (1979) 124-132.

1978

Selkowitz, Stephen E."Effective Daylighting in Buildings."Lighting Design + Application (1978) 6-8, 43-47.

Goldstein, David B."Some Analytical Models of Passive Solar Building Performance." (1978).

1977

Levin, Berton P, and Paul E Schumacher."A Discussion of Heat Mirror Film: Performance, Production Process, and Cost Estimates." (1977).

King, William J."High Performance Solar Control Office Windows." (1977).