Delphy Hydrogen Storage
Revolutionizing hydrogen storage
Delphy is an innovative underground hydrogen storage system with minimal surface footprint, enhanced safety parameters and a modular design.
Delphy: Pioneering Hydrogen Underground Storage
Vallourec’s Delphy is a breakthrough solution that enables compressed gaseous hydrogen to be stored underground in pipe assemblies. With its minimal surface footprint, modular design and optimized safety parameters, it delivers unique technical features:
- Storage capacity of 1 to 100 metric tons of hydrogen
- Vertical design up to 100 meters / 330 ft deep
- Withstands high pressures up to 500 bar / 7,500 psi
High Safety
- Uses proven hydrogen-qualified alloys & connections
- Subsurface design engineered with state-of-the-art passive and active safety features
Low Footprint
- Vertical design occupies up to 30 times less acreage than above-ground storage
- Underground design for reduced vulnerability and easier stakeholder acceptance
Flexibility & Modularity
- Modular design for site-specific optimal configuration
- Inbuilt scalability enables future evolutions
“Safety Perimeter Halved Compared to Above-Ground Alternatives”
Watch the Delphy hydrogen storage video
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Rigorously Tested & Fully Validated
Vallourec’s fully-functional Delphy demonstrator in northern France has successfully undergone comprehensive testing for materials, functionality, safety, maintenance, and more.
- Entire solution validated by independent bodies
- Compliance with Pressure Equipment Directive
- Technology qualified according to DNV-RP-A203
