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

Grant, Peter, Noah Gabriel, Weiping Huang, and Tao Yang."Field Demonstration of Cost Minimizing Load Shifting Controls for 120V Heat Pump Water Heaters in Different Pricing Scenarios."2025 ASHRAE Annual Conference (2025). DOI

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).

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).

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

Grant, Peter, Tzu-Ching Su, Luis L Fernandes, Jordan Shackelford, Anand Prakash, Stephen Czarnecki, Pei-Yu Yu, and Feng-Yi Lin."OpenFacadeControl: enabling integration of automated facades with other building systems." (2024). DOI

2023

Gehbauer, Christoph, Douglas R Black, and Peter Grant."Advanced control strategies to manage electric vehicle drivetrain battery health for Vehicle-to-X applications."Applied Energy 345 (2023) 121296. DOI

Stübs, Marius, Peter Grant, and Bruce Nordman."Demonstrating Load-Shaping Capabilities of Cost Minimizing Heat Pump Water Heater Controls with Varying Price Profiles."2023 ASHRAE Summer Conference (2023).

Grant, Peter, Marius Stübs, Bruce Nordman, and Christoph Gehbauer."Stabilizing the Grid and Reducing Utility Bills Through Price-Responsive Controls for Heat Pump Water Heaters."2023 ASHRAE Summer Conference (2023).

2022

Grant, Peter, and Christoph Gehbauer."Evaluating the Impacts of Weather Forecast Inaccuracy on Performance of Model Predictive Control for Dynamic Facades."2022 Building Performance Modeling Conference and SimBuild (2022).