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Photo of Mary J. Biddy

Mary Biddy

Strategic Analysis Platform Lead | 303-384-7904

Research Interests

  • The economic, social, and sustainability effects of the emerging bioeconomy

  • Bioproducts market and technology development—understanding and identifying barriers and critical needs

  • Utilization of advanced modeling approaches to investigate integrated and optimized biorefinery technologies and platforms

  • Process design and economic analysis

  • Production of premium fuels and chemicals from thermochemical, biochemical, and hybrid pathways

  • Sustainability analysis

  • Process optimization, integration, and scale-up

  • Fuel properties, characterization, and specifications—how biofuels vary from petroleum fuels

  • Bioproduct and bio-intermediate characterization

  • Understanding the economics and technical challenges of refinery integration of biomass intermediates from a refiner's perspective

  • Novel catalysts for upgrading to fuels and chemicals

  • Separation strategies—scale implications for bioprocessing

Affiliated Research Programs

  • Strategic and Market Analysis (PI)

  • Economic and Sustainability Analysis (contributor)

  • Biological & Catalytic Conversion of Sugars & Lignin (collaborator)

Areas of Expertise

  • Techno-economic analysis

  • Process design and optimization

  • Market assessments and evaluations

  • Strategic analysis

  • Thermodynamics and statistical mechanics

  • Rheology


  • Ph.D., Chemical Engineering, University of Wisconsin

  • B.S., Chemical Engineering, Texas A&M University Kingsville

Professional Experience

  • Strategic Analysis Platform Lead, National Renewable Energy Laboratory (NREL), National Bioenergy Center (NBC), 2012present

  • Chief Modeler and Engineering and Economics Subtask Lead, National Advanced Biofuels Consortium, NREL, 20102013

  • Senior Research Engineer – Biorefinery Analysis, NREL NBC, 2009present

  • Senior Research Engineer, Aromatics and Acetyls, BP, 20062009


  1. "Hydroxide catalysts for lignin depolymerization," U.S. Patent No. 9,631,146 (2017)

  2. "Nanoparticle modified lubricants and waxes with enhanced properties," U.S. Patent Application No. 20090053268 (2009)

Featured Publications

  1. Process Design and Economics for the Conversion of Lignocellulosic Biomass to Hydrocarbons via Indirect Liquefaction: Thermochemical Research Pathway to High-Octane Gasoline Blendstock Through Methanol/Dimethyl Ether Intermediates, NREL Technical Report (2015)

  2. "Lignin Valorization: Improving Lignin Processing in the Biorefinery," Science (2014)

  3. "Alkaline pretreatment of corn stover: Bench-scale fractionation and stream characterization," ACS Sust. Chem. Eng. (2014)

  4. "Clean fractionation pretreatment reduces enzyme loadings for biomass saccharification and reveals the mechanism of free and cellulosomal enzyme synergy," ACS Sust. Chem. Eng. (2014)

  5. "Evaluation of clean fractionation pretreatment for the production of renewable fuels and chemicals from corn stover," ACS Sust. Chem. Eng. (2014)

  6. "Techno-Economic Analysis of Liquid Fuel Production from Wood Biomass via Hydrothermal Liquefaction (HTL) and Upgrading," Applied Energy (2014)

  7. Process Design and Economics for the Conversion of Lignocellulosic Biomass to Hydrocarbons: Dilute-Acid and Enzymatic Deconstruction of Biomass to Sugars and Biological Conversion of Sugars to Hydrocarbons, NREL Technical Report (2013)

  8. "A perspective on oxygenated species in the refinery integration of pyrolysis oil," Green Chemistry (2014)

  9. Ex-Situ Catalytic Fast Pyrolysis Technology Pathway, NREL Technical Report (2013)

  10. Whole Algae Hydrothermal Liquefaction Technology Pathway, NREL Technical Report (2013)

  11. In-Situ Catalytic Fast Pyrolysis Technology Pathway, NREL Technical Report (2013)

  12. Catalytic Upgrading of Sugars to Hydrocarbons Technology Pathway, NREL Technical Report (2013)

  13. Algal Lipid Extraction and Upgrading to Hydrocarbons Technology Pathway, NREL Technical Report (2013)

  14. Biological Conversion of Sugars to Hydrocarbons Technology Pathway, NREL Technical Report (2013)

  15. Syngas Upgrading to Hydrocarbon Fuels Technology Pathway, NREL Technical Report (2013)

  16. "Multiple coproducts needed to establish cellulosic ethanol industry," Ethanol Producer Magazine (2012)

  17. "Single-step syngas-to-distillates (S2D) process based on biomass-derived syngas–A techno-economic analysis," Bioresource Technology (2012)

  18. Gasoline from wood via integrated gasification, synthesis, and methanol-to-gasoline technologies, NREL Technical Report (2011)

  19. "Gasoline from woody biomass via thermochemical gasification, methanol synthesis, and methanol-to-gasoline technologies: A technoeconomic analysis," Industrial & Engineering Chemistry Research (2011)

  20. "Techno-economics of the production of mixed alcohols from lignocellulosic biomass via high-temperature gasification," Environmental Progress and Sustainable Energy (2010)

View all NREL Publications for Mary Biddy.

Awards and Honors

  • Biofuels Digest Top 125 People in the Advanced Bioeconomy (2015)

  • NREL Staff Award for Outstanding Achievement (2014)

  • NREL President's Award (2010, 2011, 2014)

  • BP Tallow Chandlers Young Technologist Medal Winner (2008)

  • DOE Computational Science Graduate Fellow (20012006)

  • Tau Beta Pi Fellow, Williams No. 21 (20002001)

Please contact me with research questions, ideas for collaborations, and questions about the process design, economic evaluations and strategic analysis projects at NREL. Please do NOT contact me directly for jobs—see instead information on NREL's Director's Postdoctoral Fellowship program or on NREL Careers in general.