Mark Ruth is the group manager for the Industrial Systems and Fuels group in NREL's Strategic Energy Analysis Center. He leads analysis projects focused on the interface between energy sectors including electricity and industry. His current interests include the H2@Scale concept, which focuses on the potential for hydrogen as an interface with inherent storage between electricity and industry and transportation; the potential for industrial combined heat and power systems to provide grid support; and financial opportunities of tightly coupled nuclear-renewable hybrid energy systems. He has been at NREL for 25 years, where he has also been involved in bioenergy, hydrogen, and distributed energy technology analysis and development.