Grid-Scale Energy Storage Technologies are the undeniable elements of sustainable energy systems for several reasons such as stabilizing variable energy generation of solar and wind farms, facilitating sector coupling, optimizing resource utilization, improving energy security and resiliency, etc. However, the widespread deployment of such systems is currently very challenging due to major technological, economic, and policy gaps. These issues could only be addressed through cutting-edge research and innovative developments driven by skilled researchers and specialists with multi-lens visions on all critical aspects. Established around a rigorously tailored plan of action, RESTORATIVE brings together the global leaders of relevant fields and industrial actors across Europe to launch a multidisciplinary platform to address the gaps by several breakthrough solutions and training 17 doctoral fellows in different disciplines. To cover the diverse factors influencing the real-world implementation of novel energy systems, the project's thorough work plan is centered around research and PhD training in "mechanical, chemical, and material engineering for technological innovations", "power engineering, and computer sciences for addressing security, reliability, and operation bottlenecks", and "energy economics, energy policy, and environmental sciences for mitigating regulatory, policy and sustainability barriers". Since state-of-the-art research consistently highlights the superiority of thermo-mechanical solutions among all energy storage classes for grid-scale applications, RESTORATIVE is dedicated to Thermo-Mechanical Grid-Scale Energy Storage Systems. Notably, the project has a comprehensive and meticulously planned program of training and career development for doctoral students, including specialized courses, schools, workshops, academic and industrial secondment, entrepreneurship skill-building, etc.