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    Researchers in the Building & Industrial Energy Systems Division (BIES) at Lawrence Berkeley National Laboratory work closely with industry, government and key decision makers to inform and develop building and industrial energy systems that increase energy efficiency, save money and improve health and safety for building occupants.

    The BIES Division engages in innovative and creative research to advance energy efficiency in the built environment, one of the world's most critical energy and environmental challenges because buildings are the world's largest energy-users.

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    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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    • Windows & Daylighting
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    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.

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Publications: Solar Control:Exterior Shading

Publications By Research Area

  • Cool Roofs & Walls
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  • Electronics, Lighting & Networks
  • Energy & Financing
  • Energy Analytics
  • FLEXLAB® and Systems Integration
  • High Tech & Industrial
  • Indoor Air Quality
  • Modeling & Simulation
  • The Grid & Demand Response
  • Windows & Daylighting
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2018

Wang, Taoning, Gregory J Ward, and Eleanor S Lee."Efficient modeling of optically-complex, non-coplanar exterior shading: Validation of matrix algebraic methods."Energy and Buildings 174 (2018) 464 - 483. DOI

2015

Hoffmann, Sabine, and Eleanor S Lee."Potential energy savings with exterior shades in large office buildings and the impact of discomfort glare."Fourth BEST Conference Building Enclosure Science & Technology (BEST4) (2015).

2009

Lee, Eleanor S, Stephen E Selkowitz, Dennis L DiBartolomeo, Joseph H Klems, Robert D Clear, Kyle S Konis, Robert J Hitchcock, Mehry Yazdanian, Robin Mitchell, and Maria Konstantoglou."High Performance Building Facade Solutions: PIER Final Project Report." (2009).
Lee, Eleanor S, Stephen E Selkowitz, Dennis L DiBartolomeo, Joseph H Klems, Robert D Clear, Kyle S Konis, Maria Konstantoglou, and Mark Perepelitza."Innovative Façade Systems for Low-energy Commercial Buildings." (2009).

2007

Lee, Eleanor S, and Aslihan Tavil."Energy and visual comfort performance of electrochromic windows with overhangs."Building and Environment 42.6 (2007) 2439-2449. DOI

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