Skip to main content
Home
  • About Us +

    Researchers in the Building & Industrial Energy Systems Division (BIES) at Lawrence Berkeley National Laboratory work closely with industry and key decision makers to inform and develop energy systems that save money and boost competitiveness in the U.S. industrial and building sectors.

    • Access, Directions
    • Division Structure
    • Our Websites
    • Partners
    • Staff
    • Testing Capabilities
    • Art Rosenfeld
    • Join Our Mailing List
    • Resources
  • Research +

    We are at the forefront of cutting-edge research that redefines how to optimize energy performance in the industrial and building sectors.

    We have been leaders for decades in developing high-performance windows, innovating technologies for nation-wide grid reliability, creating new solutions that integrate modeling, control, and analytics, and so much more.

    Visit our research areas at the right to find out more.

    Colum 1 +
    • Windows & Daylighting
    • FLEXLAB® & Systems Integration
    • Electronics, Lighting & Networks
    • Modeling & Simulation
    • Indoor Air Quality
    • High Tech & Industrial
    Colum 2 +
    • Decision Science
    • Energy Analytics
    • Cool Roofs & Walls
    • Urban Systems
  • Publications
  • News
  • Tools & Guides +

    Explore our tools, guidebooks and software and download for free.

    We offer a variety of software and tools to support optimizing building and industrial energy systems and technologies.

    • Whole Building
    • Occupant Behavior
    • Lighting
    • Windows and Envelope Materials
    • Cool Surfaces
    • City and Districts

Commercial Building Systems

Applied research to achieve efficient commercial buildings

Staff

Commercial Building Systems

  • Contact Us
  • Staff
  • Publications
  • Energy Efficiency and Financial Valuation
  • Staff
  • Affiliates
Cynthia Regnier
Head
Iain Walker
Deputy
Jessica Granderson
Division Director
Eliot Crowe
Joshua Kace
Brennan Less
Bo Shen
Reshma Singh
Carolyn Szum
Nan Zhou
Loading

U.S Department of Energy   UC Berkeley

©2026 Energy Technologies Area, Berkeley Lab

OUR ORGANIZATION

  • Lawrence Berkeley National Laboratory
  • Energy Technologies Area
  • Building & Industrial Energy Systems Division
  • Join Our Mailing List
  • Privacy and Security Notice