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

2009

Coffey, Brian E., Sam Borgeson, Stephen E. Selkowitz, Joshua S. Apte, Paul A. Mathew, and Philip Haves."Towards a Very Low Energy Building Stock: Modeling the U.S. Commercial Building Sector to Support Policy and Innovation Planning."Building Research & Information (2009).

Coffey, Brian E., Sam Borgeson, Stephen E. Selkowitz, Joshua S. Apte, Paul A. Mathew, and Philip Haves."Towards a Very Low Energy Building Stock: Modeling the US Commercial Building Stock to Support Policy and Innovation Planning."Building Research and Information 37:5 (2009).

2006

Arasteh, Dariush K., Stephen E. Selkowitz, Joshua S. Apte, and Marc LaFrance."Zero Energy Windows."2006 ACEEE Summer Study on Energy Efficiency in Buildings (2006).

Apte, Joshua S., and Dariush K. Arasteh."Window-Related Energy Consumption in the US Residential and Commercial Building Stock." (2006).

2002

Apte, Joshua S., Dariush K. Arasteh, and Yu Joe Huang."Future Advanced Windows for Zero-Energy Homes."ASHRAE Transactions 109, pt 2 (2002) 871-888.