Energy Storage Autonomy in Renewable Energy Systems Through Hydrogen Salt Caverns

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Main Authors: Franzmann, David, Schubert, Thora, Heinrichs, Heidi, Kukla, Peter A., Stolten, Detlef
Format: Preprint
Published: 2025
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author Franzmann, David
Schubert, Thora
Heinrichs, Heidi
Kukla, Peter A.
Stolten, Detlef
author_facet Franzmann, David
Schubert, Thora
Heinrichs, Heidi
Kukla, Peter A.
Stolten, Detlef
contents The expansion of renewable energy sources leads to volatility in electricity generation within energy systems. Subsurface storage of hydrogen in salt caverns can play an important role in long-term energy storage, but their global potential is not fully understood. This study investigates the global status quo and how much hydrogen salt caverns can contribute to stabilizing future renewable energy systems. A global geological suitability and land eligibility analysis for salt cavern placement is conducted and compared with the derived long-term storage needs of renewable energy systems. Results show that hydrogen salt caverns can balance between 43% and 66% of the global electricity demand and exist in North America, Europe, China, and Australia. By sharing the salt cavern potential with neighboring countries, up to 85% of the global electricity demand can be stabilized by salt caverns. Therefore, global hydrogen can play a significant role in stabilizing renewable energy systems.
format Preprint
id arxiv_https___arxiv_org_abs_2504_12135
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Energy Storage Autonomy in Renewable Energy Systems Through Hydrogen Salt Caverns
Franzmann, David
Schubert, Thora
Heinrichs, Heidi
Kukla, Peter A.
Stolten, Detlef
General Economics
Economics
The expansion of renewable energy sources leads to volatility in electricity generation within energy systems. Subsurface storage of hydrogen in salt caverns can play an important role in long-term energy storage, but their global potential is not fully understood. This study investigates the global status quo and how much hydrogen salt caverns can contribute to stabilizing future renewable energy systems. A global geological suitability and land eligibility analysis for salt cavern placement is conducted and compared with the derived long-term storage needs of renewable energy systems. Results show that hydrogen salt caverns can balance between 43% and 66% of the global electricity demand and exist in North America, Europe, China, and Australia. By sharing the salt cavern potential with neighboring countries, up to 85% of the global electricity demand can be stabilized by salt caverns. Therefore, global hydrogen can play a significant role in stabilizing renewable energy systems.
title Energy Storage Autonomy in Renewable Energy Systems Through Hydrogen Salt Caverns
topic General Economics
Economics
url https://arxiv.org/abs/2504.12135