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Energy Technologies Area (ETA) researchers are continually building on the strong scientific foundation we have developed over the past 50 years. We address the world’s most pressing climate challenges by bringing to market energy-efficient innovations across the buildings, transportation, and industrial sectors. ETA is at the forefront of developing better batteries for electric vehicles; improving the country's aging electrical grid and innovating distributed energy and storage solutions; developing grid-interactive, efficient buildings; and providing the most comprehensive market and data analysis worldwide for renewable technologies like wind and solar.
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The Energy Technologies Area (ETA) Strategic Plan is the guiding force for our research and development for the next ten years. It clearly charts a path toward clean-energy solutions and focuses on five detailed Strategic Initiatives. The Plan provides an in-depth look at how ETA is accelerating research to provide affordable, clean energy to all while accomplishing deep, economy-wide decarbonization, looking to avoid a rise in global average temperature while simultaneously developing solutions to increase humanity's resilience to extreme weather volatility.
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The Energy Technologies Area (ETA) is unique in translating fundamental scientific discoveries into scalable technology adoption. Our approach combines an understanding of the marketplace and the role of state and federal regulation and policies. ETA's research drives real-world, practical results that affect and improve the everyday lives of Americans and those across the globe. Saving energy and battling the Climate Crisis are key to the foundation of our research, which is driven by technoeconomic analysis and in-lab experimentation and discovery.

Publications: Daylighting Systems

Publications by Research Area

Demand Response

Electricity Markets & Policy

Energy Efficiency

Industrial Energy Analysis

Renewable Energy

Sustainable Energy & Environmental Systems

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Building Technology (BTUS)

Energy Analysis (EAEI)

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2022

Ward, Gregory J, David Geisler-Moroder, Eleanor S Lee, Jacob C Jonsson, and Taoning Wang."Daylight Simulation Workflows Incorporating Measured Bidirectional Scattering Distribution Functions."Energy and Building 259 (2022).

2021

Wang, Taoning, Gregory J Ward, and Eleanor S Lee."A Python Library for Radiance Matrix-based Simulation Control and EnergyPlus Integration."IBPSA Building Simulation 2021 (2021).

Geisler-Moroder, David, Gregory J Ward, Taoning Wang, and Eleanor S Lee."Peak extraction in daylight simulations using BSDF data."IBPSA Building Simulation 2021 (2021).

Thomson, Gregory D, Robert G Davis, Luis L Fernandes, and Taoning Wang."Achieving Integrated Daylighting and Electric Lighting Systems: Current State of the Art and Needed Research."Energies 14.13 (2021) 3833. DOI

2020

Gehbauer, Christoph, David Blum, Taoning Wang, and Eleanor S Lee."Integrated Dynamic Facade Control with an Agent-based Architecture for Commercial Buildings." (2020).

2019

Wu, Yujie, Taoning Wang, Eleanor S Lee, Jérôme H Kämpf, and Jean-Louis Scartezzini."Split-pane electrochromic window control based on an embedded photometric device with real-time daylighting computing."Building and Environment 161 (2019) 106229. DOI

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

Lee, Eleanor S, Christoph Gehbauer, Anothai Thanachareonkit, Luis L Fernandes, and Taoning Wang."Dual-Zone Solar Control Indoor Shade: Demonstration at the Ronald V. Dellums Federal Building and U.S. Courthouse, 1301 Clay Street, Oakland, California and the Lawrence Berkeley National Laboratory Advanced Windows Testbed, Berkeley, California." (2018).

2015

Konis, Kyle S, and Eleanor S Lee."Measured daylighting potential of a static optical louver system under real sun and sky conditions."Building and Environment 92 (2015) 347-359. DOI

2014

Fernandes, Luis L, Eleanor S Lee, Dennis L DiBartolomeo, and Andrew McNeil."Monitored lighting energy savings from dimmable lighting controls in The New York Times Headquarters Building."Energy and Buildings 68.A (2014) 498-514. DOI

2013

McNeil, Andrew, Jacob C Jonsson, David Appelfeld, Gregory J Ward, and Eleanor S Lee."A validation of a ray-tracing tool used to generate bi-directional scattering distribution functions for complex fenestration systems."Solar Energy 98.C (2013) 404-414. DOI

Shehabi, Arman, Nicholas DeForest, Andrew McNeil, Eric R Masanet, Jeffery B Greenblatt, Eleanor S Lee, Georgeta Masson, Brett A Helms, and Delia J Milliron."U.S. energy savings potential from dynamic daylighting control glazings."Energy and Buildings 66 (2013) 415-423. DOI

Thanachareonkit, Anothai, Eleanor S Lee, and Andrew McNeil."Empirical Assessment of a Prismatic Daylight-Redirecting Window Film in a Full-Scale Office Testbed."LEUKOS: The Journal of the Illuminating Engineering Society of North America 10.1 (2013) 19-45. DOI

McNeil, Andrew, and Eleanor S Lee."Simulated daylight performance of a new prototype prismatic window film in deep open plan offices." (2013).

McNeil, Andrew."The Five-Phase Method for Simulating Complex Fenestration with Radiance." (2013).

Zuo, Wangda, Andrew McNeil, Michael Wetter, and Eleanor S Lee."Acceleration of the matrix multiplication of Radiance three phase daylighting simulations with parallel computing on heterogeneous hardware of personal computer."Journal of Building Performance Simulation (2013). DOI

McNeil, Andrew, and Eleanor S Lee."Annual daylighting performance of a passive optical light shelf in sidelit perimeter zones of commercial buildings." (2013).

2012

Ward, Gregory J, Murat Kurt, and Nicolas Bonneel."A Practical Framework for Sharing and Rendering Real-World Bidirectional Scattering Distribution Functions." (2012).

McNeil, Andrew, and Eleanor S Lee."On the benefits of a variable-resolution bidirectional scattering distribution data format." (2012) 5.

McNeil, Andrew, and Eleanor S Lee."A validation of the Radiance three-phase simulation method for modeling annual daylight performance of optically-complex fenestration systems."Journal of Building Performance Simulation April 2012 (2012). DOI

Clear, Robert D."Discomfort Glare: What Do We Actually Know?."Lighting Research and Technology April 2012 (2012). DOI

2011

Wetter, Michael."GenOpt Generic Optimization Program, User Manual, Version 3.1.0." (2011).

Zuo, Wangda, Andrew McNeil, Michael Wetter, and Eleanor S Lee."Acceleration of Radiance for Lighting Simulation by using Parallel Computing with OpenCL."12th International Conference of the International Building Performance Simulation Association (Building Simulation 2011) (2011) p. 110-117.

Ward, Gregory J, Richard G Mistrick, Eleanor S Lee, Andrew McNeil, and Jacob C Jonsson."Simulating the Daylight Performance of Complex Fenestration Systems Using Bidirectional Scattering Distribution Functions within Radiance."Leukos, The Journal of the Illuminating Engineering Society 7.4 (2011). DOI

Park, Byoung-Chul, An-Seop Choi, Jae-Weon Jeong, and Eleanor S Lee."Performance of Integrated Systems of Automated Roller Shade Systems and Daylight Responsive Dimming Systems."Building and Environment 46.3 (2011) 747-757. DOI