This report is available at no cost from the National Renewable Energy Laboratory (NREL) at www.nrel.gov/publications. U.S. Department of Energy (DOE) reports produced after 1991 and a growing number of pre-1991 documents are available free via www.OSTI.gov.Cover Photo by Dennis Schroeder: NREL 38588.NREL prints on paper that contains recycled content. continued development of the Transportation Technology Total Cost of Ownership modeling framework and assistance in implementing this model to this analysis. Special thanks to the NREL managers Margaret Mann and Mark Chung for their oversight through the reviewing and approval process, Dong Yeon Lee for contributing his peer review, and Chris Ramig again for their contribution as a peer reviewer as well. iv This report is available at no cost from the National Renewable Energy Laboratory (NREL) at www.nrel.gov/publications.

Cover Photo References• Shutterstock; "Detroit Skyline Images;" https://www.shutterstock.com/search/detroit+skyline; April 2020 • Green Car Reports; "Chevrolet Colorado ZH2: first ride in hydrogen fuel-cell Army truck;" https://www.greencarreports.com/news/1111351_chevrolet-colorado-zh2-first-ride-in-hydrogen-fuel-cell-army-truck; July 2017 • Crain's Detroit Business" Lipari Foods acquired by Miami-based private equity firm;" https://www.crainsdetroit.com/food-drink/lipari-foods-acquired-miami-based-private-equity-firm; January 2019 • NREL; "Market Transformation;" https://www.nrel.gov/hydrogen/market-transformation.html; April 2020• MPTA; "Flint MTA Unveils Proterra Hydrogen Fuel Cell;" https://www.mptaonline.org/content/flint-mta-unveilsproterra-hydrogen-fuel-cell; October 2016.