Public Relations Group, Corporate Communications Unit

Akasaka Biz Tower, 5-3-1 Akasaka, Minato-ku, Tokyo 107-6332 JAPANNovember 15, 2022

INPEX Takes FID on Kashiwazaki Clean Hydrogen/Ammonia Projectin Niigata Prefecture, JapanTOKYO, JAPAN - INPEX CORPORATION (INPEX) announced today it has taken a final
investment decision (FID) on drilling operations and the construction of facilities associated witha demonstration “Kashiwazaki Clean Hydrogen/Ammonia Project” (hereinafter “project”) to be
implemented at the INPEX-owned Higashi-Kashiwazaki Gas Field in the Hirai area of
Kashiwazaki City, Niigata Prefecture, Japan.
The project is expected to involve the transportation of natural gas produced at the INPEXoperated Gas Field in Niigata Prefecture to the Hirai area using an existing pipeline, and theproduction of 700 tons of blue hydrogen per year at a hydrogen production facility to be newly
constructed in the area.
A portion of this hydrogen will be used to produce blue ammonia per year, and the remaininghydrogen will be utilized for power generation. The CO2 generated during the production ofhydrogen and ammonia will be separated, pressurized, and injected in a subsurface gas
reservoir as a Carbon dioxide Capture, Utilization and Storage (CCUS) initiative, thereby
ensuring the production of blue hydrogen and ammonia and contributing to the low carbon
movement. INPEX plans to oversee the safety of the CO2 injection procedure as well as monitor
its effects.
This will be Japan’s first demonstration project integrating blue hydrogen and ammonia
production and usage, and one of the few in the world that have taken FID on the constructionof an actual production plant, where most of the blue hydrogen and ammonia production projectscurrently remain in the conceptual or planning stages. It is also an important project from theperspective of Japan’s energy security as it will produce clean energy from domestically sourcedgas.
The project’s hydrogen and ammonia production and CO2 recovery will be subsidized by theNew Energy and Industrial Technology Development Organization (NEDO) as an initiative for“Technology Development for the Utilization and Production of Ammonia as Fuel / Technology
development for Blue Ammonia production.”
In addition, INPEX will conduct joint research with Japan Organization for Metals and Energy
Security (JOGMEC) on the evaluation and implementation of subsurface storage of CO2 aspart of the “Demonstration test on identifying possible CO2 storage solutions utilizing domestic
depleted oil and gas fields.”

Public Relations Group, Corporate Communications Unit

Akasaka Biz Tower, 5-3-1 Akasaka, Minato-ku, Tokyo 107-6332 JAPANINPEX seeks to develop hydrogen and CCUS businesses, which represent two of the 5net zero businesses outlined in the company’s INPEX Vision @2022 announced onFebruary 9, 2022. The company plans to commercialize three or more projects by around2030 and aims to produce and supply 100 thousand tons or more of hydrogen/ammonia
per year targeting an annual CO2 injection volume of 2.5 million tons or more in around 2030
The project will serve as an initial step toward these goals. INPEX will utilize the results of thedemonstration to construct a blue hydrogen production plant in Niigata Prefecture linked toINPEX-operated natural gas fields and existing infrastructure, aiming for commercialization byaround 2030. The company will also continue to study blue hydrogen/ammonia and CCS/CCUS
project opportunities in other countries utilizing the experience gained from the project.

1．Project overview
Content-Hydrogen/ammonia production and CO2 recovery(NEDO subsidization expected)-Evaluation of CO2 storage potential of depleted oil and gas fields in Japan(Joint research with JOGMEC)
Timeline

Second half of fiscal 2022 until end of fiscal 2025

Location

INPEX Higashi-Kashiwazaki Gas Field Hirai District, Kashiwazaki City, Niigata
Prefecture

Summary1) Demonstration of production of blue hydrogen and supply of clean
electricity using blue hydrogen2) Ammonia production using a recently developed low-temperature, lowpressure synthesis process3) Evaluation and verification of CO2 storage potential of depleted oil and gas
fields in Japan
4) Confirmation of enhanced gas recovery (EGR) by CO2 injection5) Implementation of CO2 injection monitoring to confirm safety

Public Relations Group, Corporate Communications Unit

Akasaka Biz Tower, 5-3-1 Akasaka, Minato-ku, Tokyo 107-6332 JAPAN2. Project diagram

3.Rendering of completed plant

Reference
JOGMEC News Release
https://www.jogmec.go.jp/english/news/release/news_10_00018.html

Public Relations Group, Corporate Communications Unit

Akasaka Biz Tower, 5-3-1 Akasaka, Minato-ku, Tokyo 107-6332 JAPAN

About INPEX
INPEX CORPORATION is Japan’s largest exploration and production (E&P) company, and iscurrently involved in projects across multiple continents, including the Ichthys LNG Project inAustralia as Operator. Through building a cleaner upstream business and advancing hydrogenand renewables solutions, INPEX aims to become a leading energy company and continue
providing a stable and efficient supply of energy to its customers while pioneering energy
transformation towards a net zero carbon society by 2050. For more information, visit
https://www.inpex.co.jp/english/index.html.
Media Contact: INPEX Tokyo Office, Public Relations Group, Tel) +81-3-5572-0233