Sizing Hydrogen Systems: Solving the Storage Challenge for Industrial Projects and Power-to-X

This webinar is broadcast in English.

Storage is the missing link in many green hydrogen projects. On one side, intermittent renewable energy production; on the other, continuous industrial demand: without the right buffer storage solution, dozens of projects remain blocked.

In this webinar, Vallourec presents Delphy, its vertical, modular, and turnkey compressed hydrogen storage solution — designed to bridge the gap between cylinders (hundreds of kg) and salt caverns (tens of thousands of tons), precisely in the 1 to 100 tonnes of H₂ range that the market needs.

Agenda:

• Why storage creates value: electricity price arbitrage, supply chain optimization, avoidance of oversized installations, and supply security (estimated at ~1 €/kg H₂ in LCOH savings).

• Delphy technology: hydrogen stored in vertical underground piping assemblies (cavity up to 15 m diameter, 100 m depth), at 200–350 bar (option up to 500 bar for refueling stations).

• A safe-by-design solution: safety perimeter reduced by half, footprint up to 30 times more compact than above-ground solutions, water-filled ring that naturally eliminates explosive atmospheres.

• Technology maturity: demonstrator operating in France since 2023, DNV RP A-203 qualification, and PED compliance.

• A real case study: e-SAF production (300 MW, pre-FEED stage) generating €8M annual benefit and approximately 2-year payback period.

A practical session for project developers, industrial players, and Power-to-X stakeholders looking to secure their hydrogen supply and unlock the profitability of their projects.