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Leadership

The National Renewable Energy Laboratory is managed for the U.S. Department of Energy's Office of Energy Efficiency and Renewable Energy by the Alliance for Sustainable Energy, LLC, a partnership between Battelle and MRIGlobal.

Our management team is led by Dr. Dan Arvizu.

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Dr. Dan Arvizu

Director and Alliance President

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Dr. Dana Christensen

Deputy Laboratory Director, Science & Technology
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Ms. Bobi Garrett

Deputy Laboratory Director, Strategic Programs & Partnerships

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Mr. Ken Powers

Deputy Laboratory Director and Chief Operating Officer

Research Fellows

Our research fellows advise on the strategic direction of science and technology research at NREL and ensure our work meets the highest standards for quality and objectivity.

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Howard Branz

Research Fellow

Dr. Branz is a leader in film, crystal, and amorphous silicon photovoltaic research and development in the National Center for Photovoltaics.

Biography

Publications

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Helena Chum

Research Fellow

Dr. Chum's expertise is in renewable fuels, transportation systems, and international renewable energy activities including biomass, biofuels, and biorefineries.

Biography

Publications

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Maria Ghirardi

Research Fellow

Dr. Ghirardi's work at NREL involves photobiological hydrogen production and covers metabolic, biochemical, and genetic aspects of algal metabolism.

Biography

Publications

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David S. Ginley

Research Fellow

David S. Ginley's current activities are in the areas of the general class of defective transition metal oxides including high temperature superconductors, LiTMO2 rechargable Li battery materials, ferroelectric materials, transparent conducting oxides and electrochromic materials.

Biography

Publications

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Michael Himmel

Research Fellow

Dr. Michael Himmel is a biochemist whose work on cellulase greatly simplified and lowered the cost of converting biomass to fuel. Dr. Himmel manages the award-winning cellulase enzyme technology effort.

Biography

Publications

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Angelo Mascarenhas

Research Fellow

Dr. Mascarenhas' work focuses on spectroscopic research on semiconductor materials for photonics and advanced solar cells. He has done extensive research on harnessing the material consequences of semiconductor alloy instabilities such as spontaneous ordering and spontaneous composition modulation for optoelectronic applications.

Biography

Publications

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Garry Rumbles

Research Fellow

Dr. Rumbles is widely recognized for his research in photochemistry and photophysics of conjugated molecular systems, energy conversion in organic light emitting diodes and organic photovoltaic devices, and nanoscale morphology.

Biography

Publications

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Robert Thresher

Research Fellow

Dr. Thresher has more than 40 years of research, development, engineering, and management experience in wind technology, plant engineering, and aerospace systems. He has been a strategist for the initiation of a national research program to develop offshore wind, wave, tidal and current energy technology.

Biography

Publications

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John Turner

Research Fellow

Dr. Turner is recognized as a world–class scientist and international spokesperson for hydrogen energy and for his contribution in hydrogen production via photoelectrochemical splitting of water and in the development of fuel cells.

Biography

Publications

Research Fellows Emeriti

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Richard Ahrenkiel

Research Fellow Emeriti

Dr. Ahernkiel's area of specialization is the measurement and characterization of photovoltaic cells and materials. He is one of the world experts in the area of carrier recombination and carrier lifetime. He invented a unique technique for measuring the excess carrier lifetime in materials.

Biography

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Timothy J. Coutts

Research Fellow Emeriti

Dr. Coutts' research areas include thin-film science, photovoltaics, and thermophotovoltaics.

Biography

Publications

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Arthur J. Nozik

Research Fellow Emeriti

Dr. Nozik’s work focuses on photoelectrochemistry, solid state physics, semiconductor nanoscience, and related interdisciplinary science. In photoelectrochemical energy conversion, he has 5 U.S. patents and 15 published papers.

Biography

Publications

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Michael Seibert

Research Fellow Emeriti

Dr. Seibert's current research interests include primary processes of and water-oxidation in oxygenic photosynthesis, structure and function of [Fe]-hydrogenases, molecular engineering of hydrogenases, expression profiling in green algae, and photobiological hydrogen production.

Biography