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

2015

Zhou, Xin, Da Yan, Tianzhen Hong, and Xiaoxin Ren."Data Analysis and Stochastic Modeling of Lighting Energy Use in Large Office Buildings in China."Energy and Buildings 86 (2015) 275-287. DOI

Feng, Xiaohang, Da Yan, and Tianzhen Hong."Simulation of Occupancy in Buildings."Energy and Buildings 87 (2015) 348-359. DOI

Li, Cheng, Tianzhen Hong, and Da Yan."An Insight into Actual Energy Use and Its Drivers in High-Performance Buildings." (2015).

Hong, Tianzhen, Hongsan Sun, Yixing Chen, Sarah C. Taylor-Lange, and Da Yan."An occupant behavior modeling tool for co-simulation."Energy and Buildings (2015).

2014

Hong, Tianzhen, Cheng Li, Richard C. Diamond, Da Yan, Qi Zhang, Xin Zhou, Siyue Guo, Kaiyu Sun, and Jingyi Wang."Integrated Design for High Performance Buildings." (2014).

2013

Zhu, Dandan, Tianzhen Hong, Da Yan, and Chuang Wang."A Detailed Loads Comparison of Three Building Energy Modeling Programs: EnergyPlus, DeST and DOE-2.1E."Building Simulation 6.3 (2013) 323-335. DOI

Zhou, Xin, Tianzhen Hong, and Da Yan."Comparison of Building Energy Modeling Programs: HVAC Systems." (2013).

Hong, Tianzhen, Hung-Wen Lin, Wen-Kuei Chang, Liping Wang, William J. N. Turner, Da Yan, Dandan Zhu, Xin Zhou, Chuang Wang, Chen Peng, and Xiaoxin Ren."Building Performance Simulation." (2013).

Zhou, Xin, Da Yan, Tianzhen Hong, and Dandan Zhu."Building energy modeling programs comparison Research on HVAC systems simulation part." (2013).

Zhu, Dandan, Da Yan, Tianzhen Hong, and Chuang Wang."Comparison of Building Energy Simulation Programs: Dest, EnergyPlus and DOE-2." (2013).

Zhou, Xin, Da Yan, Xiaoxin Ren, and Tianzhen Hong."Data Analysis and Modeling of Lighting Energy Use in Large Office Buildings." (2013).

2012

Zhu, Dandan, Tianzhen Hong, Da Yan, and Chuang Wang."Comparative research in building energy modeling programs."China Annual HVACR Conference (2012).

2011

Zhu, Dandan, Chuang Wang, Da Yan, and Tianzhen Hong."A Comparison of DeST and EnergyPlus."China HVAC Simulation Conference (2011).