End‑use industry segmentation allocates green hydrogen to distinct demand clusters, each with unique consumption patterns and growth trajectories. Transportation, encompassing fuel‑cell electric vehicles, buses, and maritime applications, is projected to absorb about 35% of future demand, driven by decarbonization mandates. Power generation uses hydrogen for grid balancing and backup, accounting for roughly 25% as utilities integrate hydrogen‑fueled turbines and storage solutions. Heavy industry, notably steelmaking, ammonia synthesis, and refining, represents the largest share at approximately 40%, reflecting the sector’s reliance on high‑temperature process heat and feedstock replacement. This allocation informs capacity planning, as industrial off‑takers prioritize long‑term contracts and on‑site production, while transport and power sectors focus on infrastructure development and intermittency management. The distribution across these end‑use categories shapes the market’s total addressable volume and investment flows.