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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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

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2010

Harris, Jeffrey P., Richard C. Diamond, Carl Blumstein, Chris Calwell, Maithili Iyer, Christopher T. Payne, and Paul Siderius."Towards a Policy of Progressive Efficiency."People-Centered Initiatives for Increasing Energy Saving (2010).

Koomey, Jonathan G., Hashem Akbari, Carl Blumstein, Marilyn A. Brown, Richard E. Brown, Chris Calwell, Sheryl Carter, Ralph Cavanagh, Audrey Chang, David Claridge, Paul P. Craig, Richard C. Diamond, Joseph H Eto, William Fulkerson, Ashok J. Gadgil, Howard S. Geller, José Goldemberg, Charles A. Goldman, David B Goldstein, Steve E. Greenberg, David Hafemeister, Jeffrey P. Harris, Hal Harvey, Eric Heitz, Eric Hirst, Holmes Hummel, Daniel M. Kammen, Henry Kelly, John A. Laitner, Mark D. Levine, Amory Lovins, Gil Masters, James E. McMahon, Alan K. Meier, Michael Messenger, John Millhone, Evan Mills, Steven M. Nadel, Bruce Nordman, Lynn K. Price, Joseph J. Romm, Marc Ross, Michael Rufo, Jayant A. Sathaye, Leon J. Schipper, Stephen H. Schneider, James L. Sweeney, Malcolm Verdict, Diana Vorsatz, Devra Wang, Carl Weinberg, Richard Wilk, John Wilson, and Ernst Worrell."Defining a standard metric for electricity savings."Environmental Research Letters 5.1 (2010). DOI

2002

Koomey, Jonathan G., Chris Calwell, John A. Laitner, Jane Thornton, Richard E. Brown, Joseph H Eto, Carrie A. Webber, Cathy Cullicott, Robert H. Socolow, Dennis Anderson, and John Harte."Sorry, wrong number: The use and misuse of numerical facts in analysis and media reporting of energy issues."Annual Review of Energy and the Environment 2002 27 (2002) 119-158. DOI