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

2023

Gautier, Antoine, Michael Wetter, Jianjun Hu, and Hubertus Tummescheit."HVAC and Control Templates for the Modelica Buildings Library."Proceedings of the 15th International Modelica Conference 2023, Aachen, October 9-11 204 (2023). DOI

2022

Gautier, Antoine, Michael Wetter, and Matthias Sulzer."Resilient cooling through geothermal district energy system."Applied Energy 325 (2022) 119880. DOI

Hinkelman, Kathryn, Saranya Anbarasu, Michael Wetter, Antoine Gautier, and Wangda Zuo."A fast and accurate modeling approach for water and steam thermodynamics with practical applications in district heating system simulation."Energy 254 (2022) 124227. DOI

Hinkelman, Kathryn, Jing Wang, Wangda Zuo, Antoine Gautier, Michael Wetter, Chengliang Fan, and Nicholas Long."Modelica-based modeling and simulation of district cooling systems: A case study."Applied Energy 311 (2022) 118654. DOI

Hinkelman, Kathryn, Saranya Anbarasu, Michael Wetter, Antoine Gautier, Baptiste Ravache, and Wangda Zuo."Towards Open-Source Modelica Models for Steam-Based District Heating Systems."2022 Open Source Modelling and Simulation of Energy Systems (OSMSES)2022 Open Source Modelling and Simulation of Energy Systems (OSMSES) (2022). DOI

Wetter, Michael, Paul Ehrlich, Antoine Gautier, Milica Grahovac, Philip Haves, Jianjun Hu, Anand Prakash, Dave Robin, and Kun Zhang."OpenBuildingControl: Digitizing the control delivery from building energy modeling to specification, implementation and formal verification."Energy 238 (2022) 121501. DOI

2021

Long, Nicholas, Antoine Gautier, Hagar Elarga, Amy Allen, Ted Summer, Lauren Klun, Nathan Moore, and Michael Wetter."Modeling district heating and cooling systems with URBANopt, GeoJSON to Modelica Translator, and the Modelica Buildings Library.."Building Simulation 2021 (2021).

Hinkelman, Kathryn, Jing Wang, Wangda Zuo, Antoine Gautier, Michael Wetter, and Nicholas Long."A Case Study on Condenser Water Supply Temperature Optimization with a District Cooling Plant."14th International Modelica Conference (2021). DOI

Wetter, Michael, Paul Ehrlich, Antoine Gautier, Milica Grahovac, Philip Haves, Jianjun Hu, and Kun Zhang."Open Building Control." (2021).

2020

Wetter, Michael, Kyle Benne, Antoine Gautier, Thierry S Nouidui, Agnes Ramle, Amir Roth, Hubertus Tummescheit, Stuart Mentzer, and Christian Winther."Lifting the Garage Door on Spawn, an Open-Source BEM-Controls Engine.."2020 BPAC & Simbuild (2020) 518-525.

2019

Wetter, Michael, Antoine Gautier, Milica Grahovac, and Jianjun Hu."Verification of Control Sequences within OpenBuildingControl."16th IBPSA Conference (2019).