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

1987

Sweitzer, Glenn, Dariush K Arasteh, and Stephen E Selkowitz."Effects of Low-E Glazing on Energy Use Patterns in Nonresidential Daylighting Buildings."ASHRAE Transactions 93 (1987) 1553-1566.

Arasteh, Dariush K, John Hartmann, and Michael D Rubin."Experimental Verification of a Model of Heat Transfer Through Windows."ASHRAE Transactions 93 (1987).

Yu, Phillip C, and Carl M Lampert."In-Situ Spectroscopic Studies of Electrochromic Hydrated Nickel Oxide Films."Proceedings of the (1987) 834.

Rubin, Michael D."Progress Report FY 1987: Development of TiN Low-E Coatings." (1987).

Rubin, Michael D."Progress Report: Optical Properties of Thermochromic VO2 Coatings for Windows." (1987).

Sullivan, Robert, and Stephen E Selkowitz."Residential Heating and Cooling Energy Cost Implications Associated with Window Types."ASHRAE Transactions 93 (1987) 1525-1539.

Papamichael, Konstantinos M, and Stephen E Selkowitz."Simulating the Luminous and Thermal Performance of Fenestration Systems."Lighting Design + Application (1987).

Lampert, Carl M."Stability and Durability of Electrochromic Switching Films for Glazings." (1987).

Hartmann, John, Michael D Rubin, and Dariush K Arasteh."Thermal and Solar-Optical Properties of Silica Aerogel for Use in Insulated Windows."12th National Passive Solar Conference (1987).

1986

Yu, Phillip C, Gholam-Abbas Nazri, and Carl M Lampert."Spectroscopic and Electrochemical Studies of Electrochromic Hydrated Nickel Oxide Films."Solar Energy Materials 16.1-3 (1986) 1-17.

Klems, Joseph H, and H Keller."Measurement of Single and Double Glazing Thermal Performance under Realistic Conditions Using The Mobile Window Thermal Test (MoWITT) Facility."1987 ASME Solar Energy Division Conference (1986).

Selkowitz, Stephen E, Konstantinos M Papamichael, and Michael Wilde."A Concept for an Advanced Computer-Based Building Envelope Design Tool."Proceedings of the International Daylighting Conference (1986).

Arasteh, Dariush K, Russell Johnson, and Stephen E Selkowitz."Definition and Use of a Daylight Coolness Index."International Daylighting Conference (1986).

Kim, Jong-Jin, Konstantinos M Papamichael, Stephen E Selkowitz, Mark Spitzglas, and Michael F Modest."Determining Daylight Illuminance in Rooms Having Complex Fenestration Systems."Proceedings of the International Daylighting Conference (1986).

Kim, Jong-Jin, Konstantinos M Papamichael, and Stephen E Selkowitz."Development of Regression Equations for a Daylighting Coefficient-of-Utilization Model."Proceedings of the International Daylighting Conference (1986).

Johnson, Russell, and Stephen E Selkowitz."Light Guide Design Principles."International Daylighting Conference (1986).

Warren, M, Stephen E Selkowitz, Oliver C Morse, Charles C Benton, and James E Jewell."Lighting System Performance in an Innovative Daylighted Structure: An Instrumented Study."International Daylighting Conference, November 5-7, 1986 (1986).

Papamichael, Konstantinos M, and Frederick C Winkelmann."Solar-Optical Properties of Multilayer Fenestration Systems."Proceedings of the International Daylighting Conference Technical (1986).

Papamichael, Konstantinos M, Francis M Rubinstein, Stephen E Selkowitz, and Gregory J Ward."The Integration of Operable Shading Systems and Lighting Controls."Proceedings of the International Daylighting Conference (1986).

Benton, Charles C, M Warren, Stephen E Selkowitz, Rudolph R Verderber, J McBride, Oliver C Morse, and James E Jewell."A Field Evaluation of Daylighting System Performance."Advanced Building Technology, 10th CIB Congress, September 21-26, 1986 (1986).

Warren, M, Charles C Benton, Rudolph R Verderber, Oliver C Morse, Stephen E Selkowitz, and James E Jewell."Evaluation of Integrated Lighting System Performance in a Large Daylighted Office Building."1986 ACEEE Summer Study on Energy Efficiency in Buildings, August 17-23, 1986 (1986).

Kessel, Jeffrey."Transmittance Measurements in the Integrating Sphere."Applied Optics 25 (1986) 2752-2756.

Benton, Charles C, B Erwine, M Warren, and Stephen E Selkowitz."Field Measurement of Light Shelf Performance in a Major Office Installation."11th National Passive Solar Conference, June 8-14, 1986 (1986).

Sullivan, Robert, Yu Joe Huang, James Bull, Isaac Turiel, Ronald L Ritschard, and Stephen E Selkowitz."Thermal Analysis of Buildings - Configuration Perturbations and Observed Climate Interface."ASHRAE Transactions 92 (1986).

Selkowitz, Stephen E, and J.W Griffith."Effective Daylighting in Buildings - Revisited."Lighting Design + Application (1986).