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

2021

Mathew, Paul A, Lino Sanchez, Sang Hoon Lee, and Travis Walter."Assessing the Energy Resilience of Office Buildings: Development and Testing of a Simplified Metric for Real Estate Stakeholders."Building Vol.11(3) No.96 (2021). DOI

2020

Bergfeld, Katie, Paul A Mathew, Marshall Duer-Balkind, James Perakis, Pegah Noori khah, Travis Walter, and Andrew Held."Making Data-Driven Policy Decisions for the Nation’s First Building Energy Performance Standards."ACEEE Summer Study on Buildings 2020 (2020). DOI

Sanchez, Lino, Paul A Mathew, Sang Hoon Lee, and Travis Walter."Developing and Evaluating a Metric for Office Building Energy Resilience During a Power Outage."2020 Summer Study on Energy Efficiency in Buildings (2020).

2019

Walter, Travis, and Paul A Mathew."Is the BPD Nationally Representative? A Comparison of the Building Performance Database to the Commercial Buildings Energy Consumption Survey." (2019).

2016

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

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

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).

Brown, Richard E, Travis Walter, Laurel N Dunn, Claudine Y Custodio, and Paul A Mathew."Getting Real with Energy Data: Using the Buildings Performance Database to Support Data-Driven Analyses and Decision-Making." (2014).