The Multidisciplinary Integration and Networking for Increased sustainability of Geothermal HEAT (MININGHEAT) project aims at training a cluster of fifteen Early-Stage Researchers (ESRs) within a panel of internationally recognized academic and industrial actors. The program is structured in six work packages covering the project management, field and laboratory investigations, data integration, training and networking plus communication. Interactions between ESRs permit the create the link between all research activities while ensuring dissemination of scientific results and project communication. MNINGHEAT aims at understanding fluid/rock interaction processes in geothermal systems within a large range of pressure and temperature conditions. Rock alteration induces precipitation of new minerals and brine enrichment in high economic value and strategic elements (Lithium). Alteration processes are also responsible of a change in both petrophysical and mechanical properties of the reservoir. Understanding these properties is prerequisite to ensure a sustainable utilization of geothermal reservoirs while avoided any devlopment of mechanical instabilities. Field and laboratory studies will allow to reconstruct fluid flow pathways and their evolution with time in geothermal reservoirs recording an history of geothermal fluid circulations and fluid rock interaction processes at low, medium to high and high to super high temperatures. Rock microfabrics and petrophysical plus mechanical data are expected to be used for upscaling purposes using indirect geophysical data. Multiscale integrated simulations are planned to give guidelines for geothermal reservoir exploration and safe exploitation strategies overcoming the difficulties to predict potential mechanical instabilities development, thus decreasing social and economic risk. The training program will permit ESRs to develop critical transverse skills required for successful careers that go far beyond the pure research environment. ESRs will learn how to transfer their knowledge and research methodology into the development of successful industrial strategies through responsible use of geothermal reservoirs in various geological settings. ESRs will use modern communication channels to reach both a technical audience and the large public. MININGHEAT ESRs will achieve significant impact within the geothermal community and increase the social perception of geothermal energy by the population.