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Energy Storage Autonomy in Renewable Energy Systems Through Hydrogen Salt Caverns

Author

Listed:
  • David Franzmann
  • Thora Schubert
  • Heidi Heinrichs
  • Peter A. Kukla
  • Detlef Stolten

Abstract

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.

Suggested Citation

  • David Franzmann & Thora Schubert & Heidi Heinrichs & Peter A. Kukla & Detlef Stolten, 2025. "Energy Storage Autonomy in Renewable Energy Systems Through Hydrogen Salt Caverns," Papers 2504.12135, arXiv.org, revised Apr 2025.
    • Handle: RePEc:arx:papers:2504.12135
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