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

Shackelford, Jordan, Alastair Robinson, Cynthia Regnier, and Sang Hoon Lee."Getting Beyond Widgets: Performance of Efficient Indoor Air Quality System Retrofit Packages for Schools." (2023). DOI

2022

Regnier, Cynthia, Paul A Mathew, Leo Rainer, and Christopher CaraDonna."Systems Packages for Washington State Building Performance Standard Incentive Program: Phase 1 Analysis." (2022).

2020

Mathew, Paul A, Cynthia Regnier, Jordan Shackelford, and Travis Walter."Energy Efficiency Package for Tenant Fit-Out:Laboratory Testing and Validation of Energy Savingsand Indoor Environmental Quality."Energies (2020). DOI

2019

Mathew, Paul A, Philip Coleman, Janie Page, Cynthia Regnier, Jordan Shackelford, Greg Hopkins, Matt Jungclaus, and Victor Olgyay."Energy Efficiency and the Real Estate Lifecycle: Stakeholder Perspectives." (2019).

2018

Regnier, Cynthia, Paul A Mathew, Alastair Robinson, Peter Schwartz, Jordan Shackelford, and Travis Walter."Beyond Widgets: Validated Systems Energy Savings and Utility Custom Incentive Program Systems Trends."2018 Summer Study on Energy Efficiency in Buildings (2018). DOI

Mathew, Paul A, Cynthia Regnier, Travis Walter, and Jordan Shackelford."ComEd – LBNL ‘Beyond Widgets’ Project Automated Shading Integrated with Lighting and HVAC Controls System Program Manual." (2018).

Regnier, Cynthia, Paul A Mathew, Alastair Robinson, Peter Schwartz, Jordan Shackelford, and Travis Walter."Energy Cost Savings of Systems-Based Building Retrofits: A Study of Three Integrated Lighting Systems in Comparison with Component Based Retrofits." (2018).

Regnier, Cynthia, Kaiyu Sun, Tianzhen Hong, and Mary Ann Piette."Quantifying the benefits of a building retrofit using an integrated system approach: A case study."Energy and Buildings 159 (2018). DOI

Ravache, Baptiste, and Cynthia Regnier."Stasis PCM Test Results." (2018).

2017

Robinson, Alastair, Paul A Mathew, Cynthia Regnier, Peter Schwartz, Jordan Shackelford, and Travis Walter."California Publicly‐Owned Utilities (POUs) – LBNL ‘Beyond Widgets’ Project Task‐ambient lighting and occupancy‐based plug load control System Program Manual ." (2017).

Regnier, Cynthia, Paul A Mathew, Alastair Robinson, Jordan Shackelford, Peter Schwartz, and Travis Walter."Xcel Energy – LBNL ‘Beyond Widgets’ Project Workstation Specific Lighting with Daylight Dimming Controls System Program Manual." (2017).

2016

Regnier, Cynthia, Paul A Mathew, Alastair Robinson, Peter Schwartz, and Travis Walter."Beyond Widgets – Systems Incentive Programs for Utilities."ACEEE (2016).