Deep geothermal energy, particularly from crystalline systems, holds significant promise as a clean and sustainable energy source, but it also presents a unique set of challenges in terms of exploration, technological development, and risk management. The GeoLaB project is at the forefront of efforts to unlock this potential, aiming to advance our understanding of crystalline geothermal reservoirs through high-resolution experiments conducted at an Underground Research Laboratory (URL) scale. By leveraging state-of-the-art technologies and methodologies, GeoLaB seeks to provide critical insights into the dynamics of these deep reservoirs and improve the management of induced seismicity, a key concern in the development of geothermal energy from crystalline basement rocks. In addition to its direct research focus, GeoLaB is strategically positioned to create synergies with other large-scale geothermal initiatives, such as the Utah FORGE project, enabling the exchange of knowledge, data, and best practices. This collaborative approach is essential for accelerating the technological advancements necessary to make deep geothermal energy a reliable and scalable energy source. GeoLaB’s research is focused on several critical aspects of reservoir dynamics, including fluid flow, heat transfer, and the impact of deep geothermal activities on the surrounding environment, especially with respect to induced seismic events. The current exploratory phase of GeoLaB is centered on the verification of the Tromm region as a suitable site for further development. This involves an extensive program of geophysical surveys, drilling operations, and detailed geological and hydrogeological analyses to gather the data necessary to assess the region's geothermal potential. These field activities are being supported by cutting-edge digital modeling tools, including the development of a digital twin, which is playing a pivotal role in planning, advanced simulations, and visualizing the complex subsurface conditions of the region. The digital twin is a key component in ensuring that the project moves forward with a high degree of precision and foresight. By simulating various geological scenarios and operational conditions, the digital twin allows researchers and engineers to predict the behavior of the reservoir under different exploration and development strategies. This helps to identify potential challenges and risks early in the process, ensuring that mitigation measures can be implemented before they become critical issues. Overall, the GeoLaB project is making significant strides in addressing the scientific, technological, and operational challenges of harnessing deep geothermal energy from crystalline reservoirs. By combining high-resolution experiments with advanced digital modeling and collaboration with other large-scale research initiatives, GeoLaB is well-positioned to contribute valuable knowledge and innovations that will help unlock the vast untapped potential of deep geothermal energy. The ongoing infrastructure development, combined with the comprehensive exploratory activities in the Tromm region, will pave the way for future breakthroughs in the sustainable and efficient use of geothermal resources. As these efforts continue to unfold, they will provide valuable insights not only for geothermal energy production but also for the broader field of underground energy resources.

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