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

2017

Piette, Mary Ann, Tianzhen Hong, William J. Fisk, Norman Bourassa, Wanyu R. Chan, Yixing Chen, H.Y. Iris Cheung, Toshifumi Hotchi, Margarita Kloss, Sang Hoon Lee, Phillip N. Price, Oren Schetrit, Kaiyu Sun, Sarah C. Taylor-Lange, and Rongpeng Zhang."Small and Medium Building Efficiency Toolkit and Community Demonstration Program." (2017). DOI

2016

Chan, Wanyu R., Randy L. Maddalena, J. Chris Stratton, Toshifumi Hotchi, Brett C. Singer, Iain S. Walker, and Max H. Sherman."Healthy Efficient New Gas Homes (HENGH) Pilot Test Results." (2016).

2014

Hult, Erin L., Henry Willem, Phillip N. Price, Toshifumi Hotchi, Marion L. Russell, and Brett C. Singer."Formaldehyde and acetaldehyde exposure mitigation in US residences: In-home measurements of ventilation control and source control." (2014).

2013

Noris, Federico, Gary Adamkiewicz, William W. Delp, Toshifumi Hotchi, Marion L. Russell, Brett C. Singer, Michael Spears, Kimberly Vermeer, and William J. Fisk."Indoor environmental quality benefits of apartment energy retrofits."Building Environment 68 (2013) 170–178. DOI

Willem, Henry, Erin L. Hult, Toshifumi Hotchi, Marion L. Russell, Randy L. Maddalena, and Brett C. Singer."Ventilation Control of Volatile Organic Compounds in New U.S. Homes: Results of a Controlled Field Study in Nine Residential Units." (2013).

2012

Lunden, Melissa M., David Faulkner, Elizabeth Heredia, Sebastian Cohn, Darryl J. Dickerhoff, Federico Noris, Jennifer M. Logue, Toshifumi Hotchi, Brett C. Singer, and Max H. Sherman."Experiments to Evaluate and Implement Passive Tracer Gas Methods to Measure Ventilation Rates in Homes." (2012).

2011

Singer, Brett C., Alexander D. Sherman, Toshifumi Hotchi, and Douglas P. Sullivan."Pollutant Removal Efficiency of Residential Cooking Exhaust Hoods."Proceedings of the The 11th International Conference on Indoor Air Quality and Climate (2011).

2009

Singer, Brett C., Michael G. Apte, Douglas R. Black, Toshifumi Hotchi, Donald Lucas, Melissa M. Lunden, Anna G. Mirer, Michael Spears, and Douglas P. Sullivan."Natural Gas Variability in California: Environmental Impacts and Device Performance - Experimental Evaluation of Pollutant Emissions from Residential Appliances." (2009).

2005

Singer, Brett C., Alfred T. Hodgson, Toshifumi Hotchi, Katherine Y. Ming, Richard G. Sextro, Emily E. Wood, and Nancy J. Brown."Sorption of organic gases in residential bedrooms and bathrooms."Proceedings of the 10th International Conference on Indoor Air Quality and Climate - Indoor Air 2005 2(9) (2005) 2314-2319.