Establishing a renewable energy economy based on hydrogen requires technologies that support the three enabling pillars of production, utilization, and storage. As is well known, hydrogen has the highest energy density on a gravimetric basis of any energy carrier but its volumetric energy density is much lower than conventional fuels. Materials-based storage systems have long been considered as an alternative to pressurized hydrogen gas for light duty vehicles (LDV), driven by the technical targets set by the U.S. DOE. However, the application space for hydrogen is undergoing a major expansion and now includes stationary uses as well as transportation. The associated storage capacity and delivery rates for these diverse use cases differ by orders of magnitude, making it likely that no single material will be able to meet all requirements.