CCS Exploration Drilling Ops Cleared for Launch Offshore Japan

Why It Matters

The clearance represents Japan’s first offshore carbon capture and storage drilling, a pivotal step toward large‑scale CO₂ sequestration that underpins the country’s heavy‑industry decarbonization and net‑zero commitments.

Key Takeaways

• Metropolitan CCS JV cleared for offshore drilling off Kujukuri, Chiba.
• First well (Kujukuri-Oki A) to start within four months, 1,900 m deep.
• Project targets CO₂ from Nippon Steel and Keiyo industrial complex.
• Storage goal set for early 2030s, supporting Japan’s net‑zero roadmap.
• JV commits to safety and local fisheries stakeholder engagement.

Pulse Analysis

Japan is accelerating its carbon capture and storage (CCS) agenda as part of a broader strategy to meet its 2050 net‑zero target. The government’s CCS Business Act, enacted in 2022, provides a regulatory framework that encourages offshore sequestration, a critical complement to on‑shore projects that face space constraints. By designating the Kujukuri offshore zone in September 2025, the Ministry signaled strong policy backing, while JOGMEC’s engineering design work underscores the technical rigor required to commercialize CCS at scale.

The Metropolitan CCS joint venture, combining Inpex’s offshore expertise with Kanto Natural Gas Development’s gas handling capabilities, is poised to become a flagship project. Drilling will commence with the Kujukuri‑Oki A well, a jack‑up barge‑based operation targeting the Ohara cap rock and underlying reservoir formations of the Kazusa Group. A second well, Kujukuri‑Oki B, will follow, extending the geological assessment across a 5‑km to 13‑km offshore corridor. The timeline—first well in four months, second three months later—aligns with the JV’s goal to begin CO₂ injection by the early 2030s, linking captured emissions from Nippon Steel’s East Nippon Works and the broader Keiyo industrial complex via a dedicated pipeline.

If successful, the project could catalyze a new wave of offshore CCS initiatives across Japan’s industrial belts, offering a replicable model for other carbon‑intensive sectors. It also provides a tangible signal to investors that regulatory certainty and public‑private collaboration can de‑risk large‑scale climate infrastructure. However, challenges remain, including ensuring long‑term storage integrity, managing marine ecosystem impacts, and securing financing for the multi‑billion‑dollar investment required. The JV’s emphasis on safety and stakeholder engagement, particularly with local fisheries, will be critical to maintaining social license and achieving the broader decarbonization objectives.