Geothermal power has become popular recently due to its benefits, such as minimal emissions, reliability, and stability. Another important aspect of geothermal energy is that it is not affected by weather conditions, unlike solar or wind energy. This book chapter presents a comprehensive thermodynamic assessment of a combined multigeneration scheme designed for cleaner production, emphasizing the significance of using renewable energy sources such as geothermal energy. In order to achieve sustainable energy goals and lower greenhouse gas emissions, geothermal energy is essential. The integrated system includes components such as geothermal energy plant (GEP), CO2 power plant (CPP), Kalina power plant (KPP), hydrogen production and compression plant (HPCP), greenhouse heating plant (GHP), and drying plant (DP). The energy and exergy performances of the scheme are analyzed using a combination of thermodynamic principles and mathematical modeling, and were found to be 42.57% and 33.61% for the overall plant, showcasing the performance of each component. Additionally, the system incorporates hydrogen production with a 0.0086 kg/s rate, highlighting the potential for clean fuel generation and energy storage. The results indicate significant improvements in thermodynamic performance indicators as the system operates, demonstrating the viability of geothermal energy and hydrogen production for sustainable and cleaner energy practices. This study highlights the significance of geothermal energy and hydrogen production in moving toward a cleaner future and offers insightful information for improving and optimizing geothermal energy systems.