This course is an intensive primer on technologies, economics, and policies driving the emerging hydrogen economy. Centered on the pivotal role hydrogen can play in sustainable transforming the energy sector, this course explains why its unmatched energy density, zero‑carbon combustion, and compatibility with existing gas infrastructure make it a cornerstone of national energy security and sustainability strategies. Designed for engineers, technical managers, and research scientists who are interested in future hydrogen solutions, this course uniquely integrates recent technical advancements of blue and green hydrogen production pathways, and renewable power‑to‑gas energy storage option that leverage underground reservoir capabilities. By the end of the course, participants will be able to (1) compare leading blue‑hydrogen production technologies and associated CCS systems; (2) assess power‑to‑gas and subsurface storage schemes as grid‑balancing tools; (3) evaluate green‑hydrogen production options tied to regional natural resources; and (4) apply techno‑economic and life‑cycle methods to quantify costs, emissions, and policy barriers across the hydrogen supply chain.