On July 11–12, the U.S. Department of Energy's (DOE’s) Office of Energy Efficiency and Renewable Energy hosted the first Sustainable Transportation Summit in Washington, D.C. The summit brought together transportation and mobility leaders to discuss the technology, policy, and market innovations that hold the potential to shape the transportation system of the future. The H2USA Breakout Session on July 12 featured three panels discussing H2USA and H2 @ Scale. The first panel provided an overview of H2USA, a public-private collaboration between DOE, industry, state agencies, and other key stakeholders to address key challenges in deploying hydrogen infrastructure. The second panel covered stakeholder perspectives on hydrogen infrastructure. The third panel introduced a new DOE lab initiative called H2 @ Scale, which offers the potential for renewable hydrogen as a flexible, clean energy carrier that can accelerate market penetration of renewables while also deeply decarbonizing our energy system.