DEEP RESEARCH · POSCO HYDROGEN STEEL
POSCO Hydrogen Steel: Electricity Cost Is the Key Risk in the KRW 40 Trillion Shift
A news memo on why electricity cost and policy support become the bottlenecks when steelmaking moves from coal to hydrogen
0. Bottom Line First
POSCO's KRW 40 trillion hydrogen-steel push is less about whether low-carbon steel is the right direction and more about whether cheap hydrogen and cheap electricity can be secured at scale.
Official fact: According to the Maeil Business News summary, POSCO is investing KRW 40 trillion to make molten iron with hydrogen instead of coal, and plans to begin construction this year on a pilot plant costing KRW 800 billion.
Interpretation: The technological direction is set, but if expensive electricity and hydrogen remain the operating baseline, equipment investment alone will not secure competitiveness. To compete with countries such as Germany and Japan, where trillion-won-scale support is being deployed in the early market, Korea needs to examine power-procurement rules and subsidies together.
1. Key Numbers in the News
| Item | Source detail | Investor read |
|---|---|---|
| Total investment | KRW 40 trillion | This is a long-term shift in the steelmaking method, not a small process improvement. |
| Pilot plant | KRW 800 billion, construction to begin this year | The first gate for testing technology, cost, and power procurement before commercialization. |
| Process change | Use hydrogen instead of coal to make molten iron | Carbon reduction requires simultaneous change in feedstock and energy. |
| Main bottleneck | Expensive hydrogen and electricity | Hydrogen-steel economics are directly tied to power tariffs and hydrogen supply cost. |
2. Cost-Structure Frame
The article card's key line is that the plant cannot operate without cheap hydrogen and electricity. It also says POSCO wants direct purchases of nuclear power, while the government is reluctant. In my view, that is the most important policy variable in the hydrogen-steel investment case.
Official fact: The article summary says Germany and Japan are pouring trillion-won-scale support into the early hydrogen-steel market.
Interpretation: Hydrogen steel is hard to solve through corporate capex alone. Differences in power prices, subsidies, and procurement rules can become direct differences in steelmaker cost competitiveness.
3. Checkpoints
- After pilot-plant construction begins, watch the actual operating-cost disclosures and power-procurement structure.
- Track whether the government supports the transition through nuclear direct purchase, industrial electricity tariffs, hydrogen subsidies, or some combination.
- Compare Korea's early cost-offset mechanisms with those of Germany and Japan.
Sources
- Original Naver Blog post: https://m.blog.naver.com/PostView.naver?blogId=star_of_self&logNo=224130443324
- Maeil Business News article: https://m.mk.co.kr/news/business/11920121