The Jülich System Analysis researchers have conducted a study on the European energy transition, focusing on the inclusion of air and sea transport decarbonization needs to achieve greenhouse gas neutrality by 2050. Green hydrogen plays a vital role in this transition, particularly for the production of synthetic fuels like Power to Liquid (PtL). The study estimates a significant increase in green hydrogen demand, with Germany alone requiring 700 TWh annually for PtL production by 2050. The research team also emphasizes the importance of expanding the European energy network to facilitate the export of green hydrogen from countries like Spain, Norway, Italy, and Greece to meet the demands of other European countries, particularly Germany. To achieve this, a substantial expansion of renewable electricity generation in Europe is necessary, along with the development of transport networks and hydrogen storage infrastructure. The study highlights the competitive nature of European hydrogen production and the importance of expanding renewable energies to maintain cost-effectiveness. Additionally, the research addresses the limitations of nuclear energy in a climate-neutral and cost-effective European energy supply, emphasizing the role of green hydrogen in the future energy landscape.