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Research Staff

Photo of Achilles Karagiozis

Achilles Karagiozis

Center Director I-Technical

Achilles Karagiozis is the director of NREL’s Buildings and Thermal Sciences Center. He manages a multidisciplinary team of approximately 150 researchers within the laboratory’s Buildings, Concentrating Solar Power, and Geothermal Technologies groups. | 303-384-7521

Photo of Roderick Jackson

Roderick Jackson

Laboratory Program Manager II-Mechanical Engineering

Dr. Roderick Jackson is the laboratory program manager for buildings-related research at NREL. He works closely with senior laboratory management to set the strategic agenda for NREL's buildings portfolio, including all research, development, and market implementation activities, which aim to improve the energy efficiency of building materials and practices. | 303-275-4809

Photo of Bill Livingood

Bill Livingood

Group Manager, Commercial Buildings

Bill is an expert in building energy analysis, computational thermal analysis, and data acquisition and an inventor on three patents for power generation technologies. As manager of the commercial buildings research team, he oversees the development of next generation simulation capabilities and guidance documents such as the Advanced Energy Design Guides (AEDG) that provide building- and U.S. climate zone-specific design recommendations. | 303-384-7490

Photo of David Roberts

Dave Roberts

Manager, Residential Buildings Research Group

David joined NREL in 2008. David is the Residential Buildings Research Group Manager. He supports DOE research activities including the Building America program. David has been working in the area of energy efficiency in buildings since 1989 and is a licensed Professional Engineer in Colorado. He has expertise in building science, building energy simulation, and software development. Prior to joining NREL, David worked for Architectural Energy Corporation, where he led energy simulation and software development projects, and served as product manager for the REM/Rate™ home energy rating software. | 303-384-7496

Photo of Judith Vidal

Judith Vidal

Group Manager, Building Energy Science

Since Dr. Vidal joined the Building and Thermal Sciences Center in 2010, she has established an international reputation for her cutting-edge work on molten salts. In performing that research, she built a first-class laboratory for measuring the full range of thermophysical material properties and performing corrosion tests. Dr. Vidal is a joint faculty member at the Colorado School of Mines. She has diversified her expertise and capabilities in other technologies such as water splitting electrolysis, fuel cells, thermoelectrics, and biofuels. | 303-275-4290

Name Position Email Phone        
Adhikari, Rajendra Researcher III-Software Development 303-275-3955
Allen, Amy Researcher II-Mechanical Engineering 303-275-4271
Balamurugan, Sivasathya Pradha Researcher II-Software Engineering 303-275-3883
Ball, Brian Engineering 303-275-4569
Benne, Kyle Researcher IV-Software Engineering 303-275-4603
Bernal Heredia, Willy Electrical and Mechanical Engineer 303-384-7404
Bianchi, Carlo Researcher II-Mechanical Engineering 303-275-3648
Bonnema, Eric Researcher III-Mechanical Engineering 303-384-6185
Booten, Chuck Senior Engineer 303-275-3167
Brackney, Larry Researcher V-Data Science
Burkett, Lena Building Science Research Engineer 202-488-2232
Charan, Tanushree Researcher II-Mechanical Engineering 303-384-7249
Chen, Jianli Postdoctoral Researcher-Mechanical Engineering 303-275-3730
Chinde, Venkatesh Researcher III-Mechanical Engineering 303-275-4825
Chintala, Rohit Postdoctoral Researcher-Electrical Engineering 303-275-4286
Christensen, Dane Researcher V-Mechanical Engineering 303-384-7437
Coleman, Tim Researcher III-Software Engineering 303-275-3743
Cui, Shuang Postdoctoral Researcher-Mechanical Engineering 303-275-4693
Dahlhausen, Matthew Researcher III-Mechanical Engineering 303-384-6348
Deru, Michael Researcher V-Mechanical Engineering 303-384-7503
Doherty, Bennett Researcher I-Mechanical Engineering 303-275-4545
Earle, Lieko Senior Research Engineer 303-275-4355
El Kontar, Rawad Researcher III-Mechanical Engineering 303-275-3705
Faramarzi, Ramin Researcher V-Mechanical Engineering 303-384-7330
Field-Macumber, Kristin Researcher III-Mechanical Engineering 303-384-7376
Fleming, Katherine Database and Web Applications Engineer 303-275-4331
Fontanini, Tony Researcher III-Model Engineering 303-275-3286
Frank, Steve Professional IV-Engineer 303-275-4249
Gentile Polese, Luigi Lead, Controls and Advanced Analytics 303-275-4362
Goldwasser, David Researcher IV-Software Engineering 303-275-3785
Guglielmetti, Rob Researcher III-Software Engineering 303-275-4319
Harris, Chioke Research Engineer 303-275-3904
Hayes, Miles Researcher III-Mechanical Engineering 303-275-4614
Henze, Gregor Contingent Worker 303-384-6408
Horowitz, Scott Senior Research Engineer 303-384-7560
Horsey, Ry Software Developer - Commercial Buildings Energy Modeling 303-275-4919
Houssainy, Sammy Researcher II-Mechanical Engineering
Jackson, Roderick Laboratory Program Manager II-Mechanical Engineering 303-275-4809
Jin, Xin Researcher IV-Control Engineering 303-275-4360
Jones, Dalton Researcher II-Software Engineering 303-275-3262
Karagiozis, Achilles Center Director I-Technical 303-384-7521
Kim, Janghyun Researcher III-Mechanical Engineering 303-384-7459
Kozubal, Eric Sr. Mechanical Engineer 303-384-6155
Kung, Tau Research Engineer 303-275-4357
Langner, Rois Researcher IV-Mechanical Engineering
Leach, Matt Researcher IV-Mechanical Engineering 303-384-7987
Lee, Edwin Researcher III-Mechanical Engineering 303-275-3110
Li, Yanfei Researcher III-Systems Engineering 303-384-6204
Livingood, Bill Group Manager, Commercial Buildings 303-384-7490
Long, Nicholas Senior Engineer 303-384-6183
Macumber, Dan Engineering 303-384-6172
Maguire, Jeff Research Engineer 303-275-4309
Mayernik, Jack Researcher III-Decision Support Analysis 202-488-2209
Merket, Noel Research Engineer 303-275-3156
Meyer, Ryan Researcher III-Mechanical Engineering 303-275-4776
Odukomaiya, Wale Postdoctoral Researcher-Directors Fellowship 303-630-2420
Parker, Andrew Researcher III-Mechanical Engineering 303-275-4568
Pathak, Maharshi Researcher II-Model Engineering 303-275-3106
Petersen, Anya Senior Software Engineer 303-275-4598
Pflaum, Noah Researcher III-Mechanical Engineering 303-384-7527
Phillips, Lucas Researcher II-Mechanical Engineering 303-384-6482
Pless, Shanti Researcher V-Mechanical Engineering 303-384-6365
Polly, Ben Senior Research Engineer 303-384-7429
Praprost, Marlena Researcher II-Mechanical Engineering 303-275-3909
Present, Elaina Researcher III-Mechanical Engineering 303-275-4324
Reyna, Janet Researcher III-Mechanical Engineering 303-275-3218
Roberts, Dave Manager, Residential Buildings Research Group 303-384-7496
Robertson, Joe Research Engineer 303-275-4575
Rothgeb, Stacey Senior Engineer 303-275-4361
Rozenfeld, Hernan Researcher IV-Software Engineering 303-384-6152
Schott, Marjorie Project Manager II NEX-Research
Sparn, Bethany Researcher IV-Systems Engineering 303-384-7442
Speake, Andrew Researcher II-Mechanical Engineering 303-275-3253
Studer, Danny Researcher III-Mechanical Engineering 303-275-4368
Swindler, Alex Researcher III-Software Engineering 303-275-3265
Torcellini, Paul Principal Engineer 303-384-7528
Trenbath, Kim Industrial Engineer 303-275-3710
Van Dyke, Barbara Business Support II-Administrative Associate 303-384-7440
Vidal, Judith Group Manager, Building Energy Science 303-275-4290
Wheeler, Grant Researcher III-Mechanical Engineering 303-275-4577
Wilson, Eric Senior Research Engineer 303-275-4676
Winkler, Jon Senior Research Engineer 303-275-4356
Woods, Jason Senior Research Engineer 303-384-6189
Zhang, Liang Researcher III-Mechanical Engineering 303-275-4389
Zhou, Yueyue Researcher II-Mechanical Engineering 303-384-7510
Zuo, Wangda Contingent Worker 303-275-4615