PR-244-21700-R01 Underground Storage Define and Refine Scope for Hydrogen

In an effort to enhance understanding of underground hydrogen storage (UHS), Pipeline Research Council International, Inc. ("PRCI") contracted C-FER Technologies (1999) Inc. to perform an engineering assessment and literature review. The overall goal of the project is to provide PRCI with a five-year strategy to address the major technical challenges and knowledge gaps pertaining to UHS. This singular milestone has been divided into five tasks: (1) Current State-of-the-art (SOTA) for UHS; (2) UHS Gap Analysis; (3) Roadmap; (4) Roadmap Project List; and (5) Comprehensive Five-year Strategy. This report is the deliverable for Task 5; however, the deliverables for Tasks 1 to 4 are included as sections of this report and are also available as stand-alone documents (as requested by PRCI).