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.
Colum 1 +
Colum 2 +
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

1985

Warren, M, Charles C Benton, Rudolph R Verderber, Oliver C Morse, Stephen E Selkowitz, and James E Jewell."Instrumentation for Evaluating Integrated Lighting System Performance in a Large Daylighted Office Building."National Workshop on Field Data Acquisition for Building and Equipment Energy-Use Monitoring (1985).

Arasteh, Dariush K, Russell Johnson, Stephen E Selkowitz, and Deborah J Connell."Cooling Energy and Cost Savings with Daylighting."2nd Annual Symposium on Improving Building Energy Efficiency in Hot and Humid Climates (1985).

Johnson, Russell, Dariush K Arasteh, and Stephen E Selkowitz."Energy Reduction Implications with Fenestration."CLIMA 2000, World Conference on Heating, Ventilation, and Air-Conditioning (1985).

Sullivan, Robert, and Stephen E Selkowitz."Residential Window Performance Analysis Using Regression Procedures."CLIMA 2000, World Conference on Heating, Ventilation, and Air-Conditioning (1985).

Arasteh, Dariush K, and Stephen E Selkowitz."Prospects for Highly Insulating Window Systems."Conservation in Buildings: Northwest Perspective (1985).

Selkowitz, Stephen E."Window Performance and Building Energy Use: Some Technical Options for Increasing Energy Efficiency."Energy Sources: Conservation and Renewables, AIP Conference Proceedings No. 135 (1985).

Selkowitz, Stephen E."The Application of Daylighting Research Tools to Fenestration and Building Design Optimization."Architectural Applications of Design and Technology Research (1985).

Winkelmann, Frederick C, and Stephen E Selkowitz."Daylighting Simulation in the DOE-2 Building Energy Analysis Program."Energy and Buildings 8 (1985) 271-286.

Sullivan, Robert, and Stephen E Selkowitz."Energy Performance Analysis of Fenestration in a Single-Family Residence."ASHRAE Transactions 91 (1985).

Arasteh, Dariush K, Russell Johnson, Stephen E Selkowitz, and Robert Sullivan."Energy Performance and Savings Potentials with Skylights."ASHRAE Transactions 91 (1985) 154-179.

Spitzglas, Mark, Mojtaba Navvab, Jong-Jin Kim, and Stephen E Selkowitz."Scale Model Measurements for a Daylighting Photometric Data Base."Journal of the Illuminating Engineering Society 15.1 (1985) 44-61. DOI

Arasteh, Dariush K, Russell Johnson, and Stephen E Selkowitz."The Effects of Skylight Parameters on Daylighting Energy Savings." (1985).

Sullivan, Robert, and Stephen E Selkowitz."Window Performance Analysis in a Single-Family Residence."ASHRAE/DOE/BTECC Conference (1985).

1984

Selkowitz, Stephen E, Arlon J Hunt, Carl M Lampert, and Michael D Rubin."Advanced Optical and Thermal Technologies for Aperture Control."9th Passive and Hybrid Solar Energy Update (1984).

Selkowitz, Stephen E, and Robert Sullivan."Analysis of Window Performance in a Single-Family Residence."9th National Passive Solar Conference (1984) 63-68.

Navvab, Mojtaba, and Stephen E Selkowitz."Daylighting Data for Atrium Design."9th National Passive Solar Conference (1984).

Selkowitz, Stephen E."Influence of Windows on Building Energy Use."Windows in Building Design and Maintenance Conference (1984).

Kessel, Jeffrey, and Stephen E Selkowitz."Integrating Sphere Measurements of Directional-Hemispherical Transmittances of Window Systems."Illuminating Engineering Society Annual Technical Conference (1984).

Selkowitz, Stephen E, Dariush K Arasteh, and Russell Johnson."Peak Demand Savings from Daylighting in Commercial Buildings."1984 ACEEE Summer Study (1984).

Johnson, Russell, Stephen E Selkowitz, and Robert Sullivan."How Fenestration Can Significantly Affect Energy Use in Commercial Buildings."11th Energy Technology Conference (1984).

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

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

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