| Building Technology and Urban Systems

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.

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2012

Zhou, Nan, John Romankiewicz, and David Fridley."White Paper on Energy Efficiency Status of Energy-Using Products in China (2012)." (2012).

Zhou, Nan, and Lixuan Hong."Urban RAM User Guide (in Chinese)." (2012).

Zhou, Nan, Nina Zheng, David Fridley, and Nina Khanna."International Review of the Development and Implementation of Energy Efficiency Standards and Labeling Programs." (2012).

Price, Lynn K, Nan Zhou, David Fridley, Stephanie Ohshita, Hongyou Lu, Nina Zheng, Cecilia Fino-Chen, and Nina Khanna."Development of a Low-Carbon Indicator System for China."Habitat International (2012).

Ke, Jing, and Nan Zhou."GREAT Tool User Manual (in Chinese)." (2012).

2011

Price, Lynn K, Nan Zhou, David Fridley, Stephanie Ohshita, Hongyou Lu, Nina Zheng, Cecilia Fino-Chen, and Nina Khanna."Development of a Low-Carbon Indicator System for China." (2011).

Zhou, Nan, Nina Zheng, Cecilia Fino-Chen, David Fridley, Cao Ning, and Nina Khanna."Status of the Local Enforcement of Energy Efficiency Standards and Labeling Program in China." (2011).

Zhou, Nan, Lynn K Price, Stephanie Ohshita, Nina Zheng, Hu Min, and Nina Khanna."A Guidebook for Low-Carbon Development at the Local Level." (2011).

Zhou, Nan, Lynn K Price, Nina Zheng, Jing Ke, Ali Hasanbeigi, and Nina Khanna."National Level Co-Control Study of the Targets for Energy Intensity and Sulfur Dioxide in China." (2011).

Fridley, David, Michael A McNeil, Nina Zheng, Virginie E Letschert, Jing Ke, Yamina Saheb, and Nina Khanna."Analysis of Potential Energy Saving and CO₂ Emission Reduction of Home Appliances and Commercial Equipments in China."Energy Policy 39.8 (2011) 4541-4550. DOI

Zheng, Nina, Nan Zhou, Lynn K Price, Stephanie Ohshita, and Nina Khanna."A Low Carbon Development Guide for Local Government Actions in China."ECEEE Summer Study, Giens, France, June 6-11,2011 (2011).

Zhou, Nan, David Fridley, Michael A McNeil, Nina Zheng, Jing Ke, and Mark D Levine."Peak CO₂? China’s Emissions Trajectories to 2050." (2011).

Price, Lynn K, Mark D Levine, Nan Zhou, David Fridley, Nathaniel T Aden, Hongyou Lu, Michael A McNeil, Nina Zheng, Yining Qin, Ping Yowargana, and Nina Khanna."Assessment of China’s Energy-Saving and Emission-Reduction Accomplishments and Opportunities During the 11th Five Year Plan."Energy Policy 39 (2011) 2165-2178.

Zhou, Nan, David Fridley, Michael A McNeil, Nina Zheng, Jing Ke, Mark D Levine, and Nina Khanna."China’s Energy and Carbon Emissions Outlook to 2050." (2011) 83.

Zhou, Nan, Michael A McNeil, and Mark D Levine."Assessment of Building Energy-Saving Policies and Programs in China During the 11th Five Year Plan." (2011).

Zhou, Nan, Michael A McNeil, and Mark D Levine."Assessment of Building Energy-Saving Policies and Programs in China During the 11th Five Year Plan." (2011).

Fridley, David, Nina Zheng, Yining Qin, and Nina Khanna."Inventory of China’s Energy-Related CO₂ Emissions in 2008." (2011).

Zhou, Nan, David Fridley, Michael A McNeil, Nina Zheng, Virginie E Letschert, Jing Ke, and Nina Khanna."Analysis of Potential Energy Saving and CO₂ Emission Reduction of Home Appliances and Commercial Equipments in China." (2011).

DeFilippo, A, Samveg Saxena, Vi H Rapp, Jyh-Yuan Chen, and Robert W Dibble."Extending the lean flammability limit of gasoline using a microwave assisted sparkplug." (2011).

2010

Zhou, Nan, Mark D Levine, and Lynn K Price."Overview of Current Energy Efficiency Policies in China."Energy Policy 38.11 (2010) 6439-6452. DOI

Zhou, Nan, Michael A McNeil, and Mark D Levine."Assessment of Building Energy-Saving Policies and Programs in China During the 11th Five Year Plan."The 2010 International Energy Program Evaluation Conference, Counting on Energy Programs (2010).

Zheng, Nina, Nan Zhou, David Fridley, and Nina Khanna."Comparative Analysis of Modeling Studies on China’s Future Energy and Emissions Outlook." (2010).

Aden, Nathaniel T, Yining Qin, and David Fridley."Lifecycle Assessment of Beijing-Area Building Energy Use and Emissions: Summary Findings andPolicy Applications." (2010).

Zhou, Nan, David Fridley, Michael A McNeil, Nina Zheng, Virginie E Letschert, Jing Ke, and Nina Khanna."Analysis of Potential Energy Saving and CO₂ Emission Reduction of Home Appliances and Commercial Equipments in China."The 2010 American Council for an Energy Efficient Economy's Summer Study on Energy Efficiency in Buildings (2010).

Zhou, Nan, David Fridley, Nina Zheng, André Pierrot, and Nina Khanna."China Energy Efficiency Round Robin Testing Results for Room Air Conditioners." (2010).