The storage of electricity produced by intermittent renewable sources is the bottleneck of the transition towards a fully green energy landscape. Besides technical suitability, the stationary storage with battery technologies applied to buffer the temporal mismatch between electricity production and demand have to comply with very tight economic constraints to be competitive with fossil fuel combustion technologies, to allow for further nurturing of a sustainable energy transition. Moreover, sensitive aspects concerning the secured supply of critical raw materials and the strategic technological independence are now at the forefront of the discussions and need to be addressed natively to any battery technology to be developed. The consortium for ZABSES project brings the partners together from both sides of the Rhine; and proposes to setup the basis for an innovative European-based practical solution. The ZABSES project aims at demonstrating that a rechargeable alkaline zinc – air battery (ZAB) technology, being made of abundant, environmentally friendly, intrinsically safe and robust materials, without issues for recycling step and presenting auspicious life cycle costs, could be more advantageous than state-of-the-art Li-ion batteries for the stationary electricity storage. The objective of this project is to demonstrate, with the construction of a prototype (TRL 4), that such battery technology will fulfil requirements in terms of load profiles for the energy storage for residential and grid renewable production. This objective relies on promising preliminary results already gained by the partners involved in the project namely: (i) from Sunergy a solution for the zinc electrode based on the development of a NiZn battery, making 2000 cycles at 100% depth of discharge, and a zinc electrode for ZAB with a surface capacity up to 400 mAh·cm-2, (ii) a consolidated approach for bi-functional air electrode with 150 load cycles at 10 mA/cm2 (and during 2h charge and 2h discharge)in half cell tests, from ZSW. Starting from TRL 2-3, bi-functional air cathode charge-discharge capability has to be improved greatly. An iterative and integrated approach, joining experiment and modelling, will be adopted to develop cutting-edge materials and electrode architecting, to secure the output and to unveil a deeper understanding of electrode processes down to the atomic scale level, this within the framework of battery cell prototype. The French-German consortium gathers together the University of Cergy-Pontoise’s laboratory LPPI (France), the non-profit research institution ZSW (Germany) at the interface between University and Industry, the R&D SME Sunergy (France), the Research Institute Deutsches Zentrum für Luft- und Raumfahrt / Helmholtz-Institut Ulm (Germany) and the company Varta Microbattery GmbH for a concerted development of a performant rechargeable ZAB prototype.