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

Rao, Prakash, Heidi Fuchs, Amal Alsaffar, Kristina Armstrong, Sravan Chalasani, Sujit Das, Susana Garcia Gonzalez, Diane J Graziano, Unique Karki, Mini Malhotra, James McCall, Sachin Nimbalkar, Frédéric Petit, Lino Sanchez, Rob Spencer, Sarang Supekar, and Kiran Thirumaran."Advancing Manufacturing Water Resilience: Addressing Risks through New Approaches and Technologies." (2025). DOI

2020

Chalasani, Sravan, Clayton Johnson, Molly Morabito, Alexander Newkirk, Liyang Wang, Ian M Hoffman, and Christopher T Payne."Messaging for Impact: Behavioral Science-Based Communication Strategies to Advance Energy Efficiency."ACEEE 2020 Summer Study on Energy Efficiency in Buildings (2020). DOI