Within this paper, the methodologies and tools used, as well as their relationship, in the industrialization process of two different prototypes of alkaline water eletrolyzers will be analyzed. The goal of this thesis is to provide an analysis of the industrialization process as a whole. Through the application of different methodologies, many of the steps necessary to complete the industrialization process and begin production will be explored. Within the product development process of the two prototypes, new and innovative methodologies and components, which are the intellectual property of the company, were used. For this reason, no sensitive and undisclosed data will be discussed within the paper instead examples will be considered.