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

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., Nancy Wallace, Paulo Issler, Baptiste Ravache, Philip Coleman, and Cindy Zhu."Do energy costs really affect commercial mortgage default risk? New results and implications for energy efficiency investments."2018 Summer Study on Energy Efficiency in Buildings (2018). DOI

Singh, Reshma, Paul A. Mathew, Jessica Granderson, Yash Shukla, Amiya Ranjan Behera, and Michael Pitt."Packaged Scalable Energy Information Systems for Hotels."Journal of Facilities Management 16.2 (2018) 119 - 141. 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).

2017

Iyer, Maithili, Satish Kumar, Sangeeta Mathew, Hannah Stratton, Paul A. Mathew, and Mohini Singh."Establishing a commercial building energy data framework for India: Approaches, use cases, and institutions."INSPIRE 2017 (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).

Wallace, Nancy, Paulo Issler, Paul A. Mathew, and Kaiyu Sun."Impact of Energy Factors on Default Risk in Commercial Mortgages." (2017).

Mathew, Paul A., Kaiyu Sun, Baptiste Ravache, Paulo Issler, and Nancy Wallace."Impact of Energy Use and Price Variations on Default Risk in Commercial Mortgages: Case Studies." (2017).

Shehabi, Arman, Mohan Ganeshalingam, Laurèn DeMates, Paul A. Mathew, and Dale A. Sartor."Characterizing the Laboratory Market." (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

Iyer, Maithili, Satish Kumar, Sangeeta Mathew, Hannah Stratton, Paul A. Mathew, and Mohini Singh."Establishing a Commercial Buildings Energy Data Framework for India: A Comprehensive Look at Data Collection Approaches, Use Cases and Institutions." (2016).

Berger, Michael A., Paul A. Mathew, and Travis Walter."Big Data Analytics in the Building Industry."ASHRAE Journal (2016) 38-45.

Granderson, Jessica, Erin L. Hult, Samuel Fernandes, Paul A. Mathew, and Robin Mitchell."Unlocking Energy Efficiency in Small Commercial Buildings through Mechanical Contractors."Journal of Architectural Engineering (2016).

Mathew, Paul A., Sangeeta Mathew, Satish Kumar, Mohini Singh, Hannah Stratton, and Maithili Iyer."India Commercial Buildings Data Framework: A Summary of Potential Use Cases." (2016).

Iyer, Maithili, Hannah Stratton, Sangeeta Mathew, Satish Kumar, Paul A. Mathew, and Mohini Singh."Review of Building Data Frameworks Across Countries: Lessons for India." (2016).

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

Singh, Reshma, Paul A. Mathew, Jessica Granderson, Rohini Srivastava, and Yash Shukla."Caring for the Energy Health of Healthcare Facilities U.S.– India Joint Center for Building Energy Research and Development (CBERD)." (2016).

Mathew, Paul A., Nancy Wallace, Elena Alschuler, and Leonard Kolstad."Commercial mortgages: An underutilized channel for scaling energy efficiency investments?."ACEEE (2016).

Mathew, Paul A., Philip Coleman, Nancy Wallace, Paulo Issler, Lenny Kolstad, and Robert Sahadi."Energy Factors in Commercial Mortgages: Gaps and Opportunities." (2016).

2015

Mills, Evan, Jessica Granderson, Wanyu R. Chan, Richard C. Diamond, Philip Haves, Bruce Nordman, Paul A. Mathew, Mary Ann Piette, Gerald Robinson, and Stephen E. Selkowitz."Green, Clean, & Mean: Pushing the Energy Envelope in Tech Industry Buildings." (2015).

Mathew, Paul A., Laurel N. Dunn, Michael D. Sohn, Andrea C. Mercado, Claudine Custudio, and Travis Walter."Big-data for building energy performance: Lessons from assembling a very large national database of building energy use."Applied Energy 140 (2015) 85 - 93. DOI

2014

Mathew, Paul A., Laurel N. Dunn, Michael D. Sohn, Andrea C. Mercado, Claudine Y. Custodio, and Travis Walter."Big-Data for Building Energy Performance: Lessons from Assembling a Very Large National Database of Building Energy Use." (2014).

Custodio, Claudine Y., Travis Walter, Laurel N. Dunn, Andrea C. Mercado, Richard E. Brown, and Paul A. Mathew."Data Preparation Process for the Buildings Performance Database." (2014).

Sarraf, Saket, Shilpi Anand, Yash Shukla, Paul A. Mathew, and Reshma Singh."Building Energy Benchmarking in India: An Action Plan for Advancing the State-of-the-Art." (2014).