Cases are as follow:

• Identify the optimal sizes for larger cells and stacks from both techno-economical and practical point of view. Pinpoint any technical limits that may restrict the achievable size and the extent of cost reductions when innovating larger cells and stacks;
• Identify the optimal stack assembly layout into modules of > 250 kW capacity, as well as the assembly of such modules into multi-MW units;
• Based on this work, perform a thorough techno-economic analysis considering economies of scale and scalability of manufacturing processes to show that project developments allow reaching the CAPEX and OPEX KPI targets included above in order to pave the way to reach a Levelised Cost of Hydrogen (LCOH) of 3 €/kg, or under, by 2030;
• Operate successfully the cells of the optimal defined size or arrangement in the repeat unit as estimated by the action indicated above for high current density and low degradation as set out in the KPI targets included above, over 2,000 hours in relevant operating conditions;
• Validate, in terms of performance and durability over 2000h, stacks or assemblies of stacks in series to increase the power at the optimal defined size;
• Demonstrate appropriate production methods and supply chains for larger cells and stacks;
• Build a downscaled module of at least 80 kW of power. Upstream and downstream BoP components in relation to the targeted use case(s) should be included to minimise energy losses and the overall cost of the electrolyser module;
• Operate this 80-kW system in representative conditions to evaluate its efficiency (including stack and BoP components), as well as its durability for at least 2,000 h.