- Stack efficiency: 77-88% HHV (at medium current density) and 69-72% at high current density. If the novel electrodes could be implemented at industrial size, efficiency at high current density could increase up to 73-76% HHV.
- Current density: 0.5 A/cm2 with novel membranes and up to 0.7 A/cm2 for novel electrodes tested at pilot scale.
- Gas purities: 65% and 20% HTO improvement at 30 barg with new cell assembly and novel membranes respectively (in comparison with commercial membranes).
- Reaction time: few seconds at warm conditions with SoA power electronics.
- CAPEX: below 600€/kW for installations of more than 6 MW.
The final design of the MW HP AWE has been achieved on the basis of the development, validation and demonstration of a HP AWE industrial prototype.
Thanks to the improvements in terms of dynamic electrolyser performance, new and potentially profitable business models are available to investors and operators of alkaline electrolyser in future. Potential exemptions from end-user prices for electricity such as RES surcharges or network charges can be significant for profitable electrolyser integration into power systems.
The works done in cell improvement, regarding novel cell assemblies, membranes and electrodes have contributed to increase the knowledge on capabilities for development of AWE. Some of the materials developed in the project could be upscaled and manufactured to match the market requirements.
The results on dynamic testing and protocols have contributed to the development of test designs, in order to establish the requirements for dynamic operation and AST for AWE providing grid balancing services.
The C&CS developed in ELYntegration to allow connectivity with grid operators is the basis to add features based on data analytics such as optimized operation (with energy efficiency and robustness criteria) or predictive maintenance which are demanded by electrolysis industry today.