The HEI project aims in regions to support programmes related to the energy transition to decarbonised energies. It is therefore part of the regional level but also within the priority axis of the “Environmental and Energy Transition” state. Hei is based on a new structuring that follows the reunification of Normandy. In the 2014-2020 period, although the CPERs were low and high-Norman, several research structures were already Normand or even extended to the Seine Valley: the EMC3 Laboratory of Excellence combining 7 Norman UMRs and the CARNOT Energy and Propulsion Systems Institute for Energy and Materials, the CNRS IRMA Federation and the GENESIS Equipment Ex for Materials, on which the CPIER Materials in Seine-1, the CNRS I-EPE federation for the Energy and Propulsion theme was articulated. Through their joint actions, the actors of the HEI project participate in the federation of research in Normandy, the transfer of research to the socio-economic world, and the attractiveness of Normandy to increase training through research. The LabEx EMC3 played a leading role in the structuring of Norman research since the COMUE Normandie University followed its proposals for the structuring of local research into 5 Strategic Training and Research clusters, built to correspond to the 5 Norman Interest Networks of the Region. Thus the EP2M pole is the counterpart of the RIN Materials and Energy. As such, EP2M facilitators are involved in the construction of the future SRESRI by participating in the S3 definition workshops: Energy, Mobility, Industry and Risk Management, 4 of the 6 specialisations selected. The EP2M cluster’s ambition for the next CPER and CPIER is to amplify the transformative effects of the Future Investment Programme in terms of attractiveness, excellence and innovation; Normandy (CPER) with HEI and the Seine Valley (Normandie and IDF, CPIER) with the MS-2 projects, Materials in Seine 2 and MOBISEINE, Mobility in the Seine. This ambition is part of the European strategy (Horizon Europe, cluster “Climate, Energy and Mobility”, Pilar II) and aims to support in the region the energy transition to decarbonised energies, from their productions to uses, for the “industrial transition” with the labeled sectors of the territory, automotive (MOVEO) and aeronautics (NAE/ASTECH). The project is part of UN SDG 7 (ensuring access for all to reliable, sustainable and modern energy services at an affordable cost). Indeed, Normandy has the particularity of being a low-carbon electricity producer thanks to its nuclear fleet. It is the second region of France in terms of electricity production and will become the first at the start of the EPR. Thanks to its coastal potential for the development of MREs, this rise will be further amplified by the start-up of offshore wind (3 production plants under construction) and then in the more distant future of the turbine. This growing clean electricity generation is a unique opportunity at European level to implement the energy mix, since the intermittent nature of renewable energy requires the development of new means of energy storage and conversion. The Normandy region therefore has the means to be a strong player in the production of energy on a varied energy mix, with a zero carbon goal in 2050. The project presented in this application is in the Materials Axis: Materials sciences for low carbon energies or Materials in Seine-2. This investment on the GENESIS platform in Normandy aims to assemble into a single instrument, an atomic probe and a MET which will constitute a world first for the study of materials at the ultimate scale of the atom.