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

2013

O'Donnell, James, Tobias Maile, Cody Rose, Natasa Mrazovic, Elmer Morrissey, Cynthia Regnier, Kristen Parrish, and Vladimir Bazjanac."Transforming BIM to BEM: Generation of Building Geometry for the NASA Ames Sustainability Base BIM." (2013).

2011

Bazjanac, Vladimir, Tobias Maile, Cody Rose, James O'Donnell, Natasa Mrazovic, Elmer Morrissey, and Benjamin Welle."An Assessment of the use of Building Energy Performance Simulation in Early Design."IBPSA Building Simulation 2011 (2011).

Maile, Tobias, Vladimir Bazjanac, James O'Donnell, and Matthew Garr."A software tool to compare measured and simulated building energy performance data."IBPSA Building Simulation 2011 (2011).

O'Donnell, James, Richard See, Cody Rose, Tobias Maile, Vladimir Bazjanac, and Philip Haves."SimModel: A domain data model for whole building energy simulation."IBPSA Building Simulation 2011 (2011).

Bazjanac, Vladimir, Tobias Maile, James O'Donnell, Cody Rose, and Natasa Mrazovic."Data Enviroments and Processing in Sem-Automated Simulation with EnergyPlus."CIB W078-W102 (2011).

2008

Bazjanac, Vladimir."IFC BIM-based Methodology for Semi-Automated Building Energy Performance Simulation."CIB W78, Proc. 25th conf (2008).

O'Donnell, James, Marcus Keane, and Vladimir Bazjanac."Specification of an Information Delivery Tool to Support Optimal Holistic Environmental and Energy Management in Buildings."SimBuild 2008 (2008).

O'Donnell, James, Marcus Keane, and Vladimir Bazjanac."Utilisation of Whole Building Energy Simulation Output to Provide Optimum Decision Support for Building Managers."SimBuild 2008 (2008).

2004

Bazjanac, Vladimir."Virtual Building Environments - Applying Information Modeling to Buildings."European Conference on Product and Process Modeling in the Building and Construction Industry (ECPPM) 2004 (2004).

O'Donnell, James, Elmer Morrissey, Marcus Keane, and Vladimir Bazjanac."BuildingPI: A Future Tool for Building Life Cycle Analysis."SimBuild 2004 1st International Conference of IBPSA-USA (2004).

Bazjanac, Vladimir, and Tobias Maile."IFC HVAC Interface to EnergyPlus: A Case of Expanded Interoperability for Energy Simulation."SimBuild 2004, Building Sustainability and Performance Through Simulation (2004).

Bazjanac, Vladimir, and Tobias Maile."IFC HVAC interface to EnergyPlus - A case of expanded interoperability for energy simulation."SimBuild 2004 (2004).

Morrissey, Elmer, James O'Donnell, Marcus Keane, and Vladimir Bazjanac."Specification and Implementation of IFC Based Performance Metrics to Support Building Life Cycle Assessment of Hybrid Energy Systems."SimBuild 2004: Building Sustainability and Performance Through Simulation (2004).

Morrissey, Elmer, James O'Donnell, Marcus Keane, and Vladimir Bazjanac."Specification and Implementation of IFC Based Performance Metrics to Support Building Life Cycle Assessment of Hybrid Energy Systems."SimBuild 2004, Building Sustainability and Performance Through Simulation (2004).

Morrissey, Elmer, James O'Donnell, Marcus Keane, and Vladimir Bazjanac."Specification and Implementation of IFC-Based Performance Metrics to Support Building Life Cycle Assessment of Hybrid Energy Systems."SimBuild 2004, Building Sustainability and Performance Through Simulation (2004).

Morrissey, Elmer, James O'Donnell, Marcus Keane, and Vladimir Bazjanac."Specification of IFC Based Performance Metrics to Support Building Life Cycle Analysis of Hybrid Energy Systems."SimBuild 2004 1st International Conference of IBPSA-USA (2004).

Bazjanac, Vladimir."Building Energy Performance Simulation as Part of Interoperable Software Environments."Building and Environment 39 (2004) 879-883.

Bazjanac, Vladimir."Building energy performance simulation as part of interoperable software environments."Building and Environment 39 (2004) 879-883.

2003

Bazjanac, Vladimir."Improving building energy performance simulation with software interoperability."Building Simulation 2003 1 (2003).

2002

Bazjanac, Vladimir, James Forester, Philip Haves, Darko Sucic, and Peng Xu."HVAC Component Data Modeling Using Industry Foundation Classes."System Simulation in Buildings ’02 (2002).

Bazjanac, Vladimir."Early Lessons from Deployment of IFC Compatible Software."European Community Product and Process Modeling Conference (ECPPM 2003) (2002).

Lee, Eleanor S., Stephen E. Selkowitz, Christian Kohler, Vladimir Bazjanac, and Vorapat Inkarojrit."High-Performance Commercial Building Façades." (2002).

Bazjanac, Vladimir, James Forester, Philip Haves, Darko Sucic, and Peng Xu."HVAC Component Data Modeling Using Industry Foundation Classes."5th International Conference on System Simulation in Buildings 2002 (2002).

2001

Bazjanac, Vladimir."Acquisition of Building Geometry in the Simulation of Energy Performance."7th International IBPSA Conference Building Simulation 2001 (2001) 305-312.

Bazjanac, Vladimir, Yu Joe Huang, and Frederick C. Winkelmann."Impact of Perimeter Insulation on Heat Flow through Slabs in Residential Buildings." (2001).