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50-Year Evolution of Japan’s Hydrogen Policy: Why Japan Refuses to Give Up on Hydrogen

2026.06.16 Hee-sung Kim

Hee-sung Kim

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#hydrogen #hydrogen economy
Prompted by a deep sense of crisis regarding energy security, Japan has spent the 50 years since the Oil Shock systematically advancing its hydrogen policy, progressing from foundational R&D to the construction of a global supply chain. Recently, the policy's center of gravity has shifted toward market design that incentivizes private investment by linking Contract for Difference (CfD)-based price gap compensation, Green Transformation (GX) bonds, and JOGMEC policy financing. Beyond a decarbonization-centric approach, South Korea must also re-recognize hydrogen as a vital means of securing energy security. This necessitates introducing a CfD framework reflecting business costs and appropriate returns, securing overseas clean hydrogen and ammonia supply chains, and establishing an investment ecosystem where the government and private sector share risks.
Table of Contents

  • 1. Why Japan Is Obsessed with Hydrogen

  • 2. The 50-Year Step-by-Step Evolution of Japan’s Hydrogen Policy

  • 3. Key Turning Points in Policy Evolution

  • 4. Implications of Changes in Japan’s Hydrogen Policy

  • 5. Conclusion

Executive Summary

  • ○ Japan has cultivated hydrogen for 50 years as a strategic vehicle to simultaneously achieve energy security, industrial competitiveness, and decarbonization.

    • Japan turned its focus to hydrogen amid a structural vulnerability defined by the lowest energy self-sufficiency rate among G7 nations (approx. 13–15%) and heavy reliance on fossil fuel imports.

    • The starting point stemmed from a structural sense of crisis—that "we cannot produce energy internally"—rather than carbon neutrality alone.

  • ○ Starting with basic R&D after the 1970s Oil Shock, Japan’s policy evolved through demonstration, supply chain construction, and decarbonized industrialization, recently shifting toward market creation and stimulating private investment.

  • ○ Three key strategic pivots were identified during this evolution:

    • Shift 1: From domestic demonstration-centric efforts to expanding global supply chains;

    • Shift 2: From government-led R&D to market mechanisms powered by Contract for Difference (CfD) price gap compensation, GX bonds, and policy financing;

    • Shift 3: From a single path focused solely on green hydrogen to a practical dual-track strategy embracing blue hydrogen and ammonia co-firing.

  • ○ Japan’s experience indicates that the success or failure of hydrogen policy depends on national-level institutional and market design rather than technology alone.

    • The crux lies in policy conviction—that "hydrogen is a national necessity"—and the institutional consistency that backed it up.

  • ○ Three core lessons derived from the Japanese case:

    • Redefine hydrogen as a means of energy self-reliance rather than a simple decarbonization tool, explicitly linking it with the national energy security strategy;

    • Introduce a CfD-type price support framework where project operators propose cost structures and the government subsidizes the difference, while establishing dedicated policy finance capabilities via institutions like the Korea Development Bank (KDB) and the Export-Import Bank of Korea (KEXIM);

    • Preempt supply chains focused on realistic short-term options such as blue hydrogen and ammonia before phased expansion into green hydrogen and ammonia, with the government sharing private investment risks through diplomatic and financial support.

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