Overview
Personal Profile
ResearchGate
Darlene Steward is a member of the Resources and Sustainability Group within the Strategic Energy Analysis Center at NLR. Steward’s research focuses on environmental and energy systems techno-economic analysis and research in resilience, sustainability and the circular economy.
Research Interests
Controlled environment agriculture
Agricultural decarbonization
Urban metabolism
Recovery of energy and materials from waste
Circular economy
Resilience research
Professional Experience
Principal Engineer and President, Boulder Research Enterprises (2000–2007)
Education/Academic Qualification
Master, Chemical Engineering, University of Colorado
Bachelor, Chemical Engineering, University of Colorado
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Collaborations and Top Research Areas From the Past 5 Years
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Controlled Environment Agriculture: An Opportunity to Strengthen Interagency Research Collaboration in the US Government
Boyd, A., Zankowski, P., Wheeler, R., Stokes-Draute, J., Chudnovsky, Y., Ingram, D., Tijerina, M., Mickens, M., Steward, D., Armstrong, K., Boggs, A., Neely, B., Lunney, J. & Luo, Y., 2025, In: PNAS Nexus. 4, 6, 10 p.Research output: Contribution to journal › Article › peer-review
4 Scopus Citations -
Pathways for Agricultural Decarbonization in the United States
Staie, B., Kinzer, A., Macknick, J., Wang, Y., Cortright, R., Foust, T., Ghantous, S., Lamers, P. & Steward, D., 2024, 109 p.Research output: NLR › Technical Report
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Geographically Dependent Sustainability Indicators for Comparison of Conventional Vegetable Production to Controlled-Environment Agriculture
Steward, D. & Avery, G., 2023, 25 p.Research output: NLR › Presentation
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Quantifying Agricultural Productive Use of Energy Load in Sub-Saharan Africa and its Impact on Microgrid Configurations and Costs: Article No. 121131
Farthing, A., Rosenlieb, E., Steward, D., Reber, T., Njobvu, C. & Moyo, C., 2023, In: Applied Energy. 343, 13 p.Research output: Contribution to journal › Article › peer-review
24 Scopus Citations -
Sustainable Manufacturing and the Circular Economy: U.S. Department of Energy (DOE), Energy Efficiency & Renewable Energy (EERE)
Armstrong, K., Avery, G., Bhatt, A., Burton, R., Carpenter, A., Cresko, J., Dollinger, C., Dong, W., Iloeje, C., Graziano, D., Greenblatt, J., McMillan, C., Morrow, W., Nicholson, S., Nimbalkar, S., Steward, D., Supekar, S., Thirumaran, K. & Upasani, S., 2023, 240 p.Research output: NLR › Technical Report
Awards and Honors
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U.S. Department of Energy Hydrogen Program R&D Award
Steward, D. (Recipient), 2010
Prize: Honorary award