South Korea’s steel industry is at a critical juncture. As one of the world’s largest steel producers and exporters, South Korea faces growing pressure to decarbonize while maintaining its international competitiveness. At the same time, the government has identified hydrogen-based direct reduced iron (H₂-DRI) as a key long-term pathway for steel sector decarbonization and has begun establishing policy frameworks to support this transition through the K-GX and the K-Steel Act.

However, South Korea currently lacks a clear and credible green steel standard. If weak certification criteria are adopted, steelmakers may receive green steel recognition without fundamentally transforming production processes, risking continued reliance on carbon-intensive blast furnace (BF) production. Green steel standards are not merely product-labeling tools; they influence investment decisions, green technology deployment, market development, and the pace of industrial transition.

Internationally, green steel standards are evolving rapidly. Across major standards, regulatory frameworks, and buyer initiatives, there is growing convergence around clear carbon intensity thresholds and stronger requirements for physical traceability. Taken together, these developments reflect a broader shift: green steel standards are increasingly designed to drive genuine industrial transition, rather than reward incremental emissions reductions within carbon-intensive production systems. In this context, standard design plays a decisive role in determining whether market recognition and policy support accelerate the shift away from BF-based production toward genuinely low-emission steelmaking pathways such as H₂-DRI.

For South Korea, the design of a green steel standard will play an important role in determining whether the steel sector successfully transitions toward H₂-DRI production or remains locked into BF-based pathways. To support a credible and competitive transition, South Korea should:

• Avoid mass-balance approaches that allow BF-based production systems to receive green steel recognition without fundamental technological transition.

• Adopt clear, performance-based carbon intensity thresholds grounded in real emissions reductions.

• Align green steel definitions with internationally recognized principles and emerging global trade frameworks.

• Regularly update the standard to remain aligned with technological progress and the H₂‑DRI transition.

The choices South Korea makes today in defining green steel will help determine whether its steel sector successfully transitions toward hydrogen-based production or remains locked into carbon-intensive BF pathways. A credible green steel standard can strengthen market confidence, improve international competitiveness, and accelerate the decarbonization of South Korea’s steel industry.