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About TokyoH2.com

An independent, community-run information portal on Tokyo's hydrogen economy — professional in tone, transparent in sourcing, and clearly separate from official government sites.

Independence statement. TokyoH2.com is an independent community information portal. It is not affiliated with, endorsed by, or an official website of the Tokyo Metropolitan Government (TMG), and it does not reproduce official Tokyo emblems or logos. Official Tokyo hydrogen information is published by TMG at tokyoh2.jp and the Tokyo Hydrogen Navigator.

Mission

Tokyo is the world's most advanced large-scale hydrogen demonstration. Yet most of what happens there is published in Japanese, scattered across government PDFs and company releases. TokyoH2.com exists to close that gap: a single, English-language, professionally maintained reference for international readers — policymakers, journalists, analysts, students and businesses — who want to understand how Tokyo is building a hydrogen society.

We aim for official-grade reliability: content is written like a reference work, figures are dated and attributed, and ambiguity is flagged rather than papered over.

What we cover

Information sources & accuracy

Our primary sources are official and first-party documents:

Our rules: every key statistic is accompanied by a source link and an “as of” date. Where a precise figure cannot be verified, we use a conservative formulation (e.g. “100+”, “40+”) rather than inventing a number. Figures may be revised as official data is updated; check the source link for the latest official value.

How we differ from official sites

Tokyo's official hydrogen websites — tokyoh2.jp (TOKYO H2 Project) and the Tokyo Hydrogen Navigator — are authoritative for policy, subsidies and programs, and readers should treat them as the primary reference. TokyoH2.com differs in three ways:

  • Perspective: we are an editorial, not a program site — we explain, compare and contextualize rather than announce programs.
  • Audience: we are written for international readers and are English-only (a Japanese edition is planned).
  • Independence: we are privately run and take no position on government policy; errors in our pages are corrected transparently, on request.

Corrections & contributions

If you spot an error, outdated figure, or a development we should cover, contact us. We welcome corrections from official sources, contributions from researchers, and tips from industry.

Contact & partnership

We are happy to discuss collaborations with journalists, researchers and industry. Reach out here.

TokyoH2.com is an independent project and welcomes conversations with official bodies and partners about the future of this portal.