INPEX is going to make a feasibility study (FS) jointly with Green Hydrogen International (GHI) of American startup regarding the mass production of green hydrogen and green ammonia in the southern area of Texas.
　
GHI founded in 2019 is engaged in the development of green hydrogen. The company deems that rock salt dome is most efficient to store a large volume of hydrogen for a long time, and is developing to make a mass production and supply network of green hydrogen including its storage using salt dome.
　
The research done by the two companies deals with the mass production of green hydrogen and ammonia being promoted by GHI in the southern area of the State of Texas.

In the project green hydrogen is produced by renewable energy in the state. In addition, the produced green ammonia is exported to the world from the Port of Corpus Cristi.

According to GHI’s plan, the water electrolysis device to be installed will adopt 2.2GW specifications having an output capacity of hydrogen of 280,000 tons (approx. 3.5 billion Sm3) to produce hydrogen and 1 million tons per year of ammonia. The hydrogen storing capacity of salt dome will be 24,000 ton (about 300 million Sm3).

The construction is planned to start in 2026 and they will start commercial production in 2029.