With 60 GW of renewable energy and underground salt dome storage, Hydrogen City aims to produce 2.5 billion kg of green hydrogen per year.
Hydrogen City will become a large-scale green hydrogen hub with salt dome storage capacity
Hydrogen City may not match the scale of China’s record-breaking Ningxia Baofeng Energy Group project, but the Texas-based initiative by Green Hydrogen International is set to draw global attention. Located in a sparsely populated area of South Texas, Hydrogen City will serve as an integrated hub for the production, storage, and transportation of green hydrogen. The facility will harness 60 gigawatts of renewable energy from solar and wind farms to generate hydrogen from water, which will then be stored in the nearby Piedras Pintas Salt Dome.
A dedicated pipeline network will transport the hydrogen to the port cities of Corpus Christi and Brownsville. There, it will be converted into green ammonia, sustainable aviation fuel, and even rocket fuel. Notably, SpaceX’s launch facility is located just 35 kilometers from Brownsville.
Project development begins in 2026
The project will roll out in phases. The first phase, expected to launch operations in 2026, includes installing 2 GW of electrolyzers and developing two storage sites within the Piedras Pintas Salt Dome. “Storage access,” the company explains, “is key to scaling up green hydrogen production, as it enables maximum electrolyzer utilization and buffers the variability of wind and solar generation against customer delivery.”
Green Hydrogen International estimates that over 50 salt caverns can be developed in the area, providing up to 6 TWh of energy storage capacity. The company’s ultimate goal is to reach an annual production capacity of 2.5 billion kilograms of green hydrogen, positioning Hydrogen City as a critical player in the future of sustainable energy.
