| 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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2025

Paul, Lazlo, Ettore Zanetti, Jingjing Liu, Armando Casillas, Anand Prakash, David Blum, Robert Nirenberg, and Marco Pritoni."BOPTEST as a Platform for Building Controls and Grid-Interactive Buildings Workforce Training." (2025). DOI

Fuchs, Heidi."Energy Management Policy – The Voluntary Approach U.S. Case Study." (2025).

Paul, Lazlo, Sang woo Ham, Anand Prakash, Armando Casillas, Tao Yang, and Marco Pritoni."HP-FLEX: Field demonstration of the semantics-driven configuration of a Model Predictive Control system to make heat pumps flexible." (2025). DOI

Rapp, Vi H."Integrated Energy Management Training for Creating the Next Generation of Strategic Energy Managers." (2025).

Therkelsen, Peter L."ISO 50100: Ensuring Fairness and a Level Playing Field for U.S. Manufacturers in Global Emissions Reporting and International Trade." (2025).

Robinson, Gerald."Maturing Rational Design Methodologies and Industry Consensus Engineering Standards: Critical Fastened Joints - Solar PV Industry." (2025). DOI

Fuchs, Heidi, and Patty Angus."The Role of Leadership in Implementing 50001 Ready." (2025).

2024

Belaid, Youba Nait, Miguel Heleno, and Kristina Hamachi LaCommare."Reconductoring Economic and Financial Analysis (REFA) Tool." (2024).

Rogers, Ethan, and Vi H Rapp."US DOE Webinar: Energy Management Systems Training Materials." (2024).

Paul, Lazlo, Marco Pritoni, Cynthia Regnier, Jason S MacDonald, Richard E Brown, and Cecilia Johnson."Architecting the Future: Exploring Coordinated Control Frameworks for Connected Communities."ACEEE Summer Study (2024).

Casillas, Armando, Thomas Defauw, Sang woo Ham, Dre Helmns, Lazlo Paul, Anand Prakash, Weiping Huang, Peter Grant, and Marco Pritoni."Demystifying Thermal Energy Storage Integrated Heat Pump Systems: Development of Generalized Sizing and Control Algorithms for Demand Flexibility."ACEEE Summer Study (2024).

Casillas, Armando, Jessica Granderson, Yimin Chen, John House, Guanjing Lin, Weiping Huang, Guhan Velmurugan, and Marco Pritoni."Innovating the next generation of commercial smart building software."ACEEE Summer Study (2024).

Ham, Sang woo, Lazlo Paul, Armando Casillas, Anand Prakash, Donghun Kim, Richard E Brown, Marco Pritoni, and Peter Grant."Practical challenges of model predictive control (MPC) for grid interactive small and medium commercial buildings."ACEEE Summer Study (2024).

Agarwal, Shreya, Marco Pritoni, Jessica Collier, Jeff Wanner, Ruth Taylor, Meghan McNulty, and Mary M Bryan."Through the looking glass: analyzing barriers to adoption of advanced rooftop unit controls through human-centered observational research."ACEEE Summer Study (2024).

Rogers, Ethan, and Vi H Rapp."Update on DOE ISO 50001 Programs." (2024).

Pereira, Flavia De Andrade, Lazlo Paul, Marco Pritoni, Armando Casillas, Anand Prakash, Weiping Huang, Conor Shaw, Susana Martin-Toral, Donal Finn, and James O’ Donnell."Enabling portable demand flexibility control applications in virtual and real buildings."Journal of Building Engineering 86 (2024) 108645. DOI

Shehabi, Arman, Sarah Josephine Smith, Alex Hubbard, Alexander Newkirk, Nuoa Lei, Md AbuBakar Siddik, Billie Holecek, Jonathan G Koomey, Eric R Masanet, and Dale A Sartor."2024 United States Data Center Energy Usage Report." (2024). DOI

Liu, Jingjing, Mary Ann Piette, Marco Pritoni, Bruce Nordman, Peter Grant, Sarah Josephine Smith, Richard E Brown, Joe Bourg, Felipe Godinez, Matt Fung, and Mark S Martinez."Assessing Customer Experience and Business Models around Price-to-Device Communication and Smart Control Pathways in CalFlexHub." (2024). DOI

Fuchs, Heidi, and William Miller."DOE 50001 Ready Update." (2024).

Schmick, Rory."ISO 50111: Standardizing Decarbonization with Energy Management Systems." (2024).

Fuchs, Heidi."Making Energy Management Systems Case Studies Easily Searchable and Shareable." (2024).

2023

Yin, Rongxin, Jingjing Liu, Mary Ann Piette, Jiarong Xie, Marco Pritoni, Armando Casillas, Lili Yu, and Peter Schwartz."Comparing simulated demand flexibility against actual performance in commercial office buildings."Building and Environment 243 (2023) 110663. DOI

Sartori, Igor, Harald Taxt Walnum, Kristian S Skeie, Laurent Georges, Michael D Knudsen, Peder Bacher, José Candanedo, Anna-Maria Sigounis, Anand Prakash, Marco Pritoni, Jessica Granderson, Shiyu Yang, and Man Pun Wan."Sub-hourly measurement datasets from 6 real buildings: Energy use and indoor climate."Data in Brief 48 (2023) 109149. DOI

Pereira, Flavia De Andrade, Marco Pritoni, Susana Martin-Toral, Donal Finn, and James O’Donnell."A semantics-driven framework for scalable demand flexibility control applications."Computing in Construction (2023). DOI

Peffer, Therese, Gabe Fierro, Paul Raftery, Carlos Duarte Roa, Marco Pritoni, Michael Wetter, Anand Prakash, Lazlo Paul, and Erik Paulson."Skewering the silos: using Brick to enable portable analytics, modeling and controls in buildings."Center for the Built Environment (2023).