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

2025

Levinson, Ronnen M, Donghan Kim, Howdy Goudey, Sharon S Chen, Hui Zhang, Ali Ghahramani, Charlie Huizenga, yingdong He, Akihisa Nomoto, Alexander Merritt, Edward A Arens, Ana Alvarez Suarez, David Ritter, Markus Tarin, and Robert Prickett."Hot, Cold, or Just Right? An Infrared Biometric Sensor to Improve Occupant Comfort and Reduce Overcooling in Buildings via Closed-loop Control: Project Report." (2025).

2018

Ličina, Veronika Földváry, Toby Cheung, Hui Zhang, Richard de Dear, Thomas Parkinson, Edward A Arens, Chungyoon Chun, Stefano Schiavon, Maohui Luo, Gail Brager, Peixian Li, Soazig Kaam, Michael A Adebamowo, Mary Myla Andamon, Francesco Babich, Chiheb Bouden, Hana Bukovianska, Christhina Candido, Bin Cao, Salvatore Carlucci, David K.W Cheong, Joon-Ho Choi, Malcolm Cook, Paul Cropper, Max Deuble, Shahin Heidari, Madhavi Indraganti, Quan Jin, Hyojin Kim, Jungsoo Kim, Kyle S Konis, Manoj K Singh, Alison Kwok, Roberto Lamberts, Dennis Loveday, Jared Langevin, Sanyogita Manu, Cornelia Moosmann, Fergus Nicol, Ryozo Ooka, Nigel A Oseland, Lorenzo Pagliano, Dušan Petráš, Rajan Rawal, Ramona Romero, Hom Bahadur Rijal, Chandra Sekhar, Marcel Schweiker, Federico Tartarini, Shin-ichi Tanabe, Kwok Wai Tham, Despoina Teli, Jorn Toftum, Linda Toledo, Kazuyo Tsuzuki, Renata De Vecchi, Andreas Wagner, Zhaojun Wang, Holger Wallbaum, Lynda Webb, Liu Yang, Yingxin Zhu, Yongchao Zhai, Yufeng Zhang, and Xiang Zhou."Development of the ASHRAE Global Thermal Comfort Database II."Building and Environment 142 (2018) 502 - 512. DOI

2012

Dutton, Spencer M, Hui Zhang, Yongchao Zhai, Edward A Arens, Youness Bennani Smires, Samuel L Brunswick, Kyle S Konis, and Philip Haves."Application of a stochastic window use model in EnergyPlus."SimBuild 2012, 5th National Conference of IBPSA-USA, August 1-3, 2012 (2012).

Bauman, Fred S, Thomas L Webster, Stefano Schiavon, Hui Zhang, Edward A Arens, Kwang Ho Lee, Tyler Hoyt, Darryl J Dickerhoff, Timothy Moore, Wilmer Pasut, Sabine Hoffmann, Tiefeng Yu, and Elliot Nahman."Advanced Design and Commissioning Tools for Energy-Efficient Building Technologies."Final report to California Energy Commission (CEC) Public Interest Energy Research (PIER) Program (2012).

2011

Bauman, Fred S, Thomas L Webster, David Lehrer, Edward A Arens, Hui Zhang, John Goins, Darryl J Dickerhoff, Stefano Schiavon, Sabine Hoffmann, Tiefeng Yu, David Fannon, Mark Perepelitza, and Krystyna Zelenay."Advanced Integrated Systems Tools Development and Performance Testing."Final report to California Energy Commission (CEC) Public Interest Energy Research (PIER) Program (2011).

2007

Bauman, Fred S, Thomas L Webster, Hui Jin, Wolfgang Lukaschek, Corinne Benedek, Edward A Arens, Paul F Linden, Anna Lui, Walter F Buhl, and Darryl J Dickerhoff."Energy Performance of Underfloor Air Distribution Systems."California Energy Commission, PIER Building End-Use Energy Efficiency Program (2007).

Bauman, Fred S, Thomas L Webster, Hui Jin, Wolfgang Lukaschek, Corinne Benedek, Edward A Arens, Paul F Linden, Anna Lui, Walter F Buhl, and Darryl J Dickerhoff."Energy Performance of Underfloor Air Distribution Systems." (2007).

1999

Modera, Mark P, Tengfang T Xu, Helmut E Feustel, Nance Matson, Charlie Huizenga, Fred S Bauman, Edward A Arens, and Tom R Borgers."Efficient Thermal Energy Distribution in Commercial Buildings." (1999).

1993

Bauman, Fred S, R.S Helm, Edward A Arens, William J Fisk, and David Faulkner."Air Movement, Comfort, and Ventilation in Partitioned Work."ASHRAE Journal 35.3 (1993) 42-50.

1991

Bauman, Fred S, David Faulkner, Edward A Arens, William J Fisk, Lucy P Johnston, Pleasant J McNeel, David Pih, and Hui Zhang."Air movement, comfort and ventilation in partitioned workstations."ASHRAE Transactions 98 Part 1 (1991) 756-780.