The consortium proposes to explore the role of gaseous products generated during alkaline electrolysis. Gas transport and bubble formation are identified as important contributors to the process limitations. Researchers will investigate fundamental bubble nucleation and behavior in strongly confined geometries mimicking electrolysis processes. Bubble size distribution and clustering inside stack configurations, combined with dissolved gas transport, will provide a more complete picture of their role in transport limitations. Experimental approaches will be paralleled by numerical simulations, to enable accurate descriptions for large-scale industrial hydrogen production through alkaline water electrolysis.