PROJECT OVERVIEW

The HyCavern Project

HyCavern develops next-generation lined rock cavern technology for safe, scalable underground hydrogen storage in Europe.

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Project Activities

Steel & Coating Innovation

Laser-based manufacturing and protective coatings for hydrogen-resistant steel liners.

Concrete & Geological Systems

Low-carbon concrete and rock–interface performance for safe underground storage.

Simulation & Optimization

Digital tools to design, assess, and optimise cavern systems.

Advanced Monitoring

Real-time sensing and digital twins for system integrity

System Validation (TRL5)

Large-scale testing under realistic operating conditions.

Site Selection Toolkit

Decision-support tools for optimal storage deployment.

Techno-Economic Analysis

Understanding costs, markets, and business potential.

Communication & Outreach

Engaging stakeholders, sharing results and long-term impact.

Expected Impact

Energy System Resilience

Large-scale storage to balance renewable energy supply

Improved energy security and system flexibility

Support for seasonal hydrogen storage needs

Industrial Decarbonization

Reliable hydrogen supply for industrial processes

Support for low-carbon steel, chemicals, and manufacturing

Reduced dependence on fossil-based energy systems

Energy System Resilience

Validation of lined rock cavern technology for hydrogen

New materials and monitoring systems for underground storage

Scalable storage solutions adaptable to multiple geological settings

Hydrogen Needs Storage. Europe Needs Scale.

Europe’s transition to a hydrogen-based energy system requires large-scale underground storage solutions capable of balancing renewable variability and industrial demand. However, current storage options are geographically limited, technically constrained, and not easily replicable across diverse geological conditions.

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Country Involved

13

Professional Partners

2

Universities