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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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: Energy Efficiency

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2013

Fridley, David, Nina Zheng, Nan Zhou, Jing Ke, Ali Hasanbeigi, William R Morrow III, Lynn K Price, and Nina Khanna."China Energy and Emissions Path to 2030." (2013).

Walker, Iain S, Darryl J Dickerhoff, David Faulkner, and William J. N Turner."Energy Implications of In-‐Line Filtration in California." (2013).

Payne, Christopher T, Andrew R Weber, and Abby Semple."Energy-efficient Public Procurement Best Practice in Program Delivery SEAD Initiative Procurement Working Group." (2013).

2012

Zhou, Nan, John Romankiewicz, Edward L Vine, Nina Khanna, and David Fridley."International Review of Frameworks for Impact Evaluation of Appliance Standards, Labeling, and Incentives." (2012).

Fujita, K Sydny, and Margaret Taylor."Achieved and Potential Energy Savings through Energy Efficient Procurement." (2012).

Ke, Jing, Lynn K Price, Stephanie Ohshita, David Fridley, Nina Khanna, Nan Zhou, and Mark D Levine."China’s Industrial Energy Consumption Trends and Impacts of the Top-1000 Enterprises Energy-Saving Program and the Ten Key Energy-Saving Projects."Energy Policy 50 (2012) 562-569. DOI

Wang, Liping, Paul A Mathew, and Xiufeng Pang."Uncertainties in energy consumption introduced by building operations and weather for a medium-size office building."Energy and Buildings 53 (2012) 152 - 158. DOI

Wang, Liping, Paul A Mathew, and Xiufeng Pang."Uncertainties in energy consumption introduced by building operations and weather for a medium-size office building."Energy and Buildings 53 (2012) 152 - 158. DOI

Zhou, Nan, Nina Khanna, David Fridley, and John Romankiewicz."International Review of Framework for Standards & Labeling Setting and Development." (2012).

Taylor, Margaret, and K Sydny Fujita."Program Potential: Estimates of Federal Energy Cost Savings from Energy Efficient Procurement." (2012).

Taylor, Margaret, and K Sydny Fujita."The Path to Savings: Understanding the Federal Purchase of Energy-Consuming Products." (2012).

Fridley, David, Nina Zheng, Nan Zhou, Jing Ke, Ali Hasanbeigi, William R Morrow III, Lynn K Price, and Nina Khanna."China Energy and Emissions Paths to 2030 (2nd Edition)." (2012).

Zheng, Nina, Nan Zhou, Cecilia Fino-Chen, David Fridley, and Nina Khanna."Evaluation of Local Enforcement of Energy Efficiency Standards and Labeling Program in China."International Energy Program Evaluation Conference (2012).

Zhou, Nan, Nina Zheng, David Fridley, John Romankiewicz, and Nina Khanna."International Comparative Analysis of Appliance Efficiency Standards & Labeling Programs: Implications for China."ACEEE Summer Study on Energy Efficiency in Buildings (2012).

Zheng, Nina, Nan Zhou, Cecilia Fino-Chen, David Fridley, and Nina Khanna."Local Enforcement of Appliance Efficiency Standards and Labeling Program in China: Progress and Challenges."2012 ACEEE Summer Study on Energy Efficiency in Buildings (2012).

Ke, Jing, Nina Zheng, David Fridley, Lynn K Price, Nan Zhou, and Nina Khanna."Potential Energy Savings and CO₂ Emissions Reduction of China’s Cement Industry." (2012).

Zhou, Nan, John Romankiewicz, and David Fridley."White Paper on Energy Efficiency Status of Energy-Using Products in China (2011)." (2012).

Taylor, Margaret, and K Sydny Fujita."Who Buys What? Understanding Federal Procurement of Energy Efficient Products."American Council for an Energy Efficient Economy (2012).

Taylor, Margaret, K Sydny Fujita, Larry L Dale, and James E McMahon."An Exploration of Innovation and Energy Efficiency in an Appliance Industry."European Council for an Energy Efficiency Economy (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).

Mills, Evan, and Paul A Mathew."Monitoring-Based Commissioning: Benchmarking Analysis of 24 University Buildings in California."Energy Engineering (2012).

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