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

Paul, Lazlo, Flavia De Andrade Pereira, Anand Prakash, Sang woo Ham, Jingjuan Feng, Rich Brown, and Marco Pritoni."Open building operating system: a grid-responsive semantics-driven control platform for buildings."Science and Technology for the Built Environment 31.3 (2025) 294-311. DOI

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).

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

Nordman, Bruce, Margarita Kloss, Bijit Kundu, Nate Dewart, Anand Prakash, Laura Wong, Alanna Torres, Rachel Levine, Marco Pritoni, Jordan Shackelford, Heidi Werner, Rahul Athalye, Aditya Khandekar, Callie Clark, Chris Uraine, and Rebecca Aviles."Energy Reporting: Device Demonstration, Communication Protocols, and Codes and Standards." (2024).

2022

Paul, Lazlo, Anand Prakash, Kun Zhang, Marco Pritoni, and Richard E Brown."SolarPlus Optimizer: Integrated Control of Solar, Batteries, and Flexible Loads for Small Commercial Buildings."2022 ACEEE Summer Study on Energy Efficiency in Buildings (2022).

2021

Bennani, Imane Lahmam, Anand Prakash, Marina Zafiris, Lazlo Paul, Carlos Duarte Roa, Paul Raftery, Marco Pritoni, and Gabe Fierro."Query relaxation for portable brick-based applications."BuildSys '21: The 8th ACM International Conference on Systems for Energy-Efficient Buildings, Cities, and Transportation (2021). DOI

Helmns, Dre, David Blum, Armando Casillas, Anand Prakash, Jonathan Woolley, David Vernon, Caton Mande, Michael Woodcox, and Spencer M Dutton."Towards a Techno-Economic Analysis of PCM-Integrated Hybrid HVAC Systems."6th International High Performance Buildings Conference at Purdue (2021).

2020

Brown, Richard E, Peter Schwartz, Bruce Nordman, Jordan Shackelford, Aditya Khandekar, Neal Jackson, Anand Prakash, Srijit Ghosh, and Erik Page."Developing Flexible, Networked Lighting Control Systems That Reliably Save Energy in California Buildings." (2020). DOI