POSCO to Build Hydrogen-Based Steelmaking Ecosystem with HyREX Technology, First Demonstration in Pohang
POSCO Group plans to build a 300,000-ton-per-year hydrogen-based steelmaking facility in Pohang by 2028, using its HyREX technology. The company aims to expand this ecosystem to Gwangyang and other regions, with government support for clean energy and market policies. POSCO expects significant economic impact and carbon reductions from this initiative.
How this was made
The 30-second read
Why it matters
The announcement positions POSCO as a pioneer in green steel, potentially attracting ESG funds but carries execution risk.
Market read
While the plan is ambitious, its long‑term nature limits immediate trading impact; relevance lies in sector‑wide ESG trends.
What to watch
Potential regulatory, hydrogen supply, and technology scaling challenges may delay benefits.
Background
POSCO, South Korea's leading steelmaker, unveiled its HyREX hydrogen steelmaking roadmap at a government‑hosted K‑GX event.
Market effects
Highlights growing demand for hydrogen‑based steel, may benefit related equipment and hydrogen supply firms.
Supports South Korea's green industrial policy and could boost local hydrogen infrastructure projects.
Signals broader shift toward low‑carbon steel, relevant for global steel and energy transition investors.
Counterpoint
The project’s long horizon and high capital cost could strain POSCO’s balance sheet without immediate returns.
Key entities
- companyPOSCO
South Korean steel producer launching hydrogen steelmaking demo plant.
- government_programK‑GX Strategy
National green transformation initiative supporting low‑carbon projects.



