“…Note that this analysis does not consider materials required to build and support the infrastructure for the hydrogen economy. To meet projected demands for hydrogen, low-cost hydrogen transportation (e.g., pipelines, gas and liquid trucking) and storage technologies (e.g., absorptive or chemical carrier materials; compressed gas, cold/cryo, liquid hydrogen storage, salt caverns, and lined hard rock storage) also need to be developed, designed, and commercialized (DOE, 2023;Liu et al, 2022;Moreira & Laing, 2022).…”