SUSTAIN H2 Logo

Subsurface Storage
Technological Advancements &
Innovation for Hydrogen

Sustain H2 underground storage illustration showing the different layers of the earth with Hydrogen stations above pumping hydrogen into underground storage facilities.

Effective implementation of a hydrogen economy will hinge on the development of large-scale, low-cost storage solutions.

To ensure that storage is prioritized in the burgeoning hydrogen economy, GTI Energy has developed SUSTAIN H2. This collaboration was designed to accelerate the deployment of safe and cost-effective long-term underground hydrogen storage (UHS).

By leveraging scientific expertise, market insights, field experience, and industry partnerships, we aim to make significant strides in advancing UHS technology.

Key Benefits

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Implement Cross-cutting Collaboration

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Minimize Redundant Research Efforts

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Explore Complementary Opportunities

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Save Time and Costs

Where can hydrogen be stored underground?

(Click an icon in the illustration to learn more.)

Salt Caverns

Salt caverns are artificially created cavities in salt deposits, historically used for storing natural gas, hydrogen, and other energy resources.

 Mines

Previously mined rock caverns (mines), constructed in specific geological formations, can be repurposed for underground storage of gases such as compressed air.

 Aquifer

Aquifers are water-bearing sedimentary rock formations overlaid with impermeable cap rock and can be used for underground storage of natural gas or hydrogen.

 Depleted Reservoirs

Depleted oil and gas reservoirs are porous rock formations that once held hydrocarbons. After the hydrocarbons are extracted, the remaining pore space can be used for storage.

 Hard Rock Cavern

In the absence of other suitable geologies, underground solid rock cavities, created using conventional mining techniques, are used for storage in various applications, such as storing natural gas, compressed air, and hydrogen.
Diagram depicting the layers of the earth showing the underground options for gas storage such as salt caverns, mines, depleted reservoirs, aquifers and hard-rock caverns.
inside of a Salt Cavern

Salt Cavern

Salt caverns are artificially created cavities in salt deposits, historically used for storing natural gas, hydrogen, and other energy resources.

inside of a tunnel in a mine

Mines

Previously mined rock caverns (mines), constructed in specific geological formations, can be repurposed for underground storage of gases such as compressed air.

diagram showing the different layers underground for aquifers that include water stored underground in cracks and aquifers, impermeable rock, permeable rock and the aquifer layer.

Aquifer

Aquifers are water-bearing sedimentary rock formations overlaid with impermeable cap rock and can be used for underground storage of natural gas or hydrogen.

rock from a depleted reservoir

Depleted Reservoirs

Depleted oil and gas reservoirs are porous rock formations that once held hydrocarbons. After the hydrocarbons are extracted, the remaining pore space can be used for storage.

inside of a hardened rock cavern

Hard Rock Cavern

In the absence of other suitable geologies, underground solid rock cavities, created using conventional mining techniques, are used for storage in various applications, such as storing natural gas, compressed air, and hydrogen.

Learn More

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