The assignment pertains the execution extensive energy system studies in the North European context with a focus on the North Sea, Denmark, Germany and the Netherlands. The first study needs to be finalized before July 1st 2021. It is expected that the assignment will be extended to perform an additional series of in-depth studies, based on the tools and knowledge developed in the period until July 2021. It is also expected that specific focus studies need to be developed to increase the quality of the overall energy system studies and to respond on specific requests of the stakeholders involved.