ARB Research Seminar

This page updated February 16, 2018

The Development of Lifecycle Data for Hydrogen Fuel Production and Delivery

Photo of Marshall Miller

Marshall Miller

Photo of Arun Raju

Arun Raju

Marshall Miller, Ph.D., University of California, Davis and Arun Raju, Ph.D., University of California Riverside’s Center for Environmental Research & Technology (CE-CERT)

February 16, 2018
Cal EPA Headquarters, 1001 "I" Street, Sacramento, CA

Presentation: 1. 2.
Research Project


The Low Carbon Fuel Standard (LCFS) currently includes several pathways for hydrogen (H2) fuels. This project was developed to provide LCFS staff with 118 additional pathways for the production of renewable hydrogen and an evaluation of renewable hydrogen production technologies anticipated to be available in the short, mid and long term timeframes. The conversion technologies addressed in the study included thermal processes, electrolytic processes, photolytic processes, and biochemical processes. A lifecycle analysis using the CA-GREET Tier 2 model was performed on a subset of the production technologies for both centralized and distributed pathways. An economic analysis using the H2A model was performed on these pathways. The resulting GHG emissions (gCO2e/MJ H2) and hydrogen cost ($/.kg) are reported. Sensitivity analyses were performed for both cost and emissions. A review of the potential to inject hydrogen into natural gas pipelines for distribution was also performed. The review considered issues such as safety, hydrogen leakage, embrittlement of pipelines, general risk, and extraction of hydrogen. The potential hydrogen demand from non-transportation fuel cell markets was estimated over a ten year timeframe. Specific markets considered were material handlers (forklifts), transport refrigeration units (TRUs), airport ground support equipment, and telecommunications backup power.

Speaker Biography

Marshall Miller, Ph.D., is a Senior Development Engineer at University of California Davis’ Institute of Transportation Studies. Dr. Miller received his Ph.D. in physics from the University of Pennsylvania. After a post-doc at the University of Chicago, he joined University of California, Davis in 1993. His work focuses on advanced technologies and fuels to increase fuel economy and reduce emissions in the transportation sector. He manages the Advanced Vehicle Propulsion Systems Laboratory at UC Davis where he studies batteries and ultracapacitors to understand their applications in vehicles. He has developed models to assess the potential greenhouse gas reductions and cost implications from the market penetration of new vehicle technologies in the light-duty and trucking sectors. He has worked with transit agencies, utilities, regulatory agencies, industry, and non-profits to understand the implications of specific vehicle and fuel technologies including fuel cells, batteries, hydrogen, and biofuels.

Arun Raju, Ph.D., is an Assistant Research Engineer at University of California Riverside’s Center for Environmental Research & Technology (CE-CERT). His research focuses on renewable fuels, energy systems analysis including techno-economic and life cycle analysis, CO2 utilization, and optimization of energy conversion pathways. He is currently Director of the Center for Renewable Natural gas (CRNG). He has a Ph.D. in Chemical Engineering from UC Riverside with a focus on gasification and related processes. He has experience in research related to synthetic fuels and chemicals production, and power generation via thermochemical pathways, including waste to energy processes. Before joining CE-CERT, Arun was the Director of Research at Viresco Energy, LLC and later served as the Director of Technology Development at Combustion Associates, Inc.

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