The European purpose of achieving a climate-neutral economy by 2050 has revived the interest in renewable hydrogen, which is currently postulated as the main player in achieving the goal of an emission-free economy. In this context, SharedH2-Sudoe becomes aware of the shared territorial imbalances and, in turn, of the renewable energy generation capacity of the Sudoe territory. For this reason and as beneficiaries, the participating entities decide to combine their knowledge and experiences to, through a collaborative action and from a transnational approach, soften the urban-rural imbalance between the three participating countries. The main objective of the project is to promote and validate the use of renewable hydrogen as a flexible and distributed energy storage solution in local energy communities, which serves as an alternative for the empowerment of strategic rural areas through the development of new sustainable economic activities, the mitigation of environmental impacts and the improvement of the quality of life of its inhabitants. SharedH2-Sudoe will deepen the technical and scientific knowledge of the sector and test innovative solutions developed in a common way, through the development of pilot actions for the generation of renewable hydrogen from photovoltaic energy for its implementation in sectors such as transport. These pilot experiences will be carried out on Spanish, Portuguese and French territory. In addition, a joint strategy for the social and economic revitalisation of rural areas will be developed, helping to retain and even attract people, with renewable hydrogen integrated into local energy communities as a tool to achieve this purpose. In addition, the project will lay the strategic basis for a roadmap in the European economy based on renewable energies, especially renewable hydrogen, and will contribute to increasing the added value of the future transfer of the solutions found to sectoral public policies.