REMEDHYS

The main objective of REMEDHYS is to advance the maturity of aboveground solid-state hydrogen storage solutions based on metal hydrides with hydrogen chemically bounded to the metals, and operation at ambient conditions. 

This is a compact and safe hydrogen storage method, and with significant advantages compared to both compressed and liquid hydrogen storage solutions. The hydrogen storage system in REMEDYS with capacity of 100 kg H2 will operate at a pressure below 50 bar. The metal hydrides will be produced from low-cost recycles metals sourced in Europe, and then minimizing the needs to import critical raw materials to Europe. The modular hydrogen storage system will be validated in an end-user scenario with a 2 MW PEM electrolyzer and supplies of hydrogen to a hydrogen-powered offshore service supply vessel. 

REMEDHYS will contribute to implementation of regulations, codes, and standards for largescale aboveground storage systems for solid-state hydrogen storage systems. The project will also address sustainability and circularity aspects by employing a Life Cycle Assessment and make recycling of critical raw materials as an integrated part of the materials development.

The REMEDHYS consortium consists of the leading research institutions in Europe on solid-state hydrogen carriers; four research centers and two universities, and four partners from the industry. REMEDHYS will build on the experiences from the EU funded project HyCARE, 2019-2023, which had six of the REMEDHYS partners. 

THE ROLE OF FBK

 FBK leads the package of activities (WP8) that is dedicated to the foundational design and deployment of a metal hydride hydrogen storage system tailored for the demonstration site in Cuxhaven. It starts by thoroughly understanding end-user needs and site constraints to ensure the system fits technical requirements like hydrogen flow, temperature, and capacity, while also aligning with practical operational realities. 

The project develops key process documents including a Process Flow Diagram (PFD) and a functional Process and Instrumentation Diagram (P&ID) that incorporate safety instrumentation, budgeting, and risk considerations. Risk assessment follows, using methods like HAZOP  analysis to identify hazards and risks and refine the P&ID into a final version with detailed safety measures addressing both conventional and unique risks of metal hydride hydrogen storage. A key goal is to enable safer, flexible storage potentially inside buildings or underground. 

The last major task is designing and define the control strategy for managing hydrogen absorption, desorption, and system transitions. The control framework defines system operation, control loops, alarm systems, sensor requirements, and uses dynamic modelling to verify the behaviour of control loops architecture. 

Overall, WP8 integrates user requirements, technical design, safety, and control strategy into a comprehensive blueprint tailored for the Cuxhaven demonstration. This foundational work supports the advancement of novel metal hydride hydrogen storage technology that aims to be practical, economically viable, and safe, contributing to clean energy system goals. 

This aligns with the REMEDHYS project’s overall mission to develop compact, safe, solid-state hydrogen storage using metal hydrides, validated at a 100 kg capacity demonstration site in Cuxhaven integrated with hydrogen production and application systems