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

2003

Rubinstein, Francis M, Nesrin Colak, Judy D Jennings, and Danielle Neils."Analyzing Occupancy Profiles from a Lighting Controls Field Study."CIE Session 2003 (2003).

Rubinstein, Francis M, Mehry Yazdanian, and Jim Galvin."Draft Photosensor Characterization Report." (2003).

Rubinstein, Francis M, Stephen Treado, and Pete Pettler."Standardizing Communication Between Lighting Control Devices."2003 IEEE-IAS Conference (2003).

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

Koomey, Jonathan G, and Richard E Brown."The role of building technologies in reducing and controlling peak electricity demand." (2002).

Rubinstein, Francis M, Pete Pettler, and Judy D Jennings."Dimming Every Light Cheaply."2002 ACEEE Summer Study on Energy Efficiency in Buildings 11 (2002).

Roberson, Judy A, Gregory K Homan, Akshay Mahajan, Bruce Nordman, Carrie A Webber, Richard E Brown, Marla C McWhinney, and Jonathan G Koomey."Energy Use and Power Levels in New Monitors and Personal Computers." (2002).

Roberson, Judy A, Gregory K Homan, Akshay Mahajan, Bruce Nordman, Carrie A Webber, Richard E Brown, Marla C McWhinney, and Jonathan G Koomey."Enery Use and Power Management in New Personal Computers and Monitors." (2002) 36.

Johnson, Stephen G."LEDs - An Overview of the State of the Art in Technology and Application."Light Right 5 Conference (2002).

Johnson, Stephen G, and Jerry A Simmons."Materials for Solid State Lighting."2002 Materials Research Society Spring Meeting (2002).

Kawamoto, Kaoru, Jonathan G Koomey, Bruce Nordman, Richard E Brown, Mary Ann Piette, Michael K Ting, and Alan K Meier."Electricity Used by Office Equipment and Network Equipment in the U.S.."Energy 27.3 (2002) 255-269. DOI

Webber, Carrie A, Richard E Brown, Akshay Mahajan, and Jonathan G Koomey."Savings Estimates for the ENERGY STAR Voluntary Labeling Program: 2001 Status Report." (2002).

2001

Webber, Carrie A, Judy A Roberson, Richard E Brown, Christopher T Payne, Bruce Nordman, and Jonathan G Koomey."Field Surveys of Office Equipment Operating Patterns." (2001).

Rubinstein, Francis M, Danielle Neils, and Nesrin Colak."Daylighting, Dimming, and the Electricity Crisis in California."2001 IESNA National Conference (2001).

Keith, David M, and Francis M Rubinstein."Effect of Occupancy Sensors on Energy Usage and Peak Demand in Commercial Office Buildings: Part 1."2001 Conference of the Illuminating Engineering Society of North America (IES) (2001).

Kawamoto, Kaoru, Jonathan G Koomey, Michael K Ting, Bruce Nordman, Richard E Brown, Mary Ann Piette, and Alan K Meier."Electricity Used by Office Equipment and Network Equipment in the U.S.: Detailed Report and Appendices." (2001).

Osborn, Julie G, Frances Wood, R. R Cooper Richey, Sandy Sanders, Walter Short, and Jonathan G Koomey."A Sensitivity Analysis of the Treatment of Wind Energy in the AEO99 Version of NEMS." (2001) 43.

Rubinstein, Francis M, and Pete Pettler."Final Report on Internet Addressable Light Switch." (2001).

Rubinstein, Francis M, and Pete Pettler."IBECS Network/Ballast Interface - Final Report." (2001).

Jennings, Judy D, Nesrin Colak, and Francis M Rubinstein."Occupancy and Time-Based Lighting Controls in Open Offices."Journal of the Illuminating Engineering Society 31 (2001) 86-100.

2000

Kawamoto, Kaoru, Jonathan G Koomey, Bruce Nordman, Richard E Brown, Mary Ann Piette, and Alan K Meier."Electricity Used by Office Equipment and Network Equipment in the U.S.."2000 ACEEE Summer Study on Energy Efficiency in Buildings (2000).

Rubinstein, Francis M, and Stephen G Johnson."IBECS: An Integrated Building Environmental Communications System--Its Not Your Fathers Network."2000 ACEEE Summer Study on Energy Efficiency in Buildings (2000).

Mitchell, Jeffrey C, Michael J Siminovitch, Erik Page, Kevin W Gauna, and Doug A Avery."Integrated Lighting Approach Saves Energy in Post Office Facilities."2000 ACEEE Summer Study on Energy Efficiency in Buildings (2000).

Koomey, Jonathan G."Rebuttal to Testimony on ‘Kyoto and the Internet: The Energy Implications of the Digital Economy’." (2000).

Diamond, Richard C, and Mithra M Moezzi."Revealing Myths about People, Energy, and Buildings." (2000) 12.