This doctoral thesis presents a thorough investigation into the simulation and optimal management of energy storage technologies within the framework of smart energy systems. From an extensive review of existing literature to the development of innovative optimization techniques, the thesis navigates the intricate landscape of renewable energy optimal utilization in various contexts. The research outcomes may have practical implications for policy makers, system operators, and researchers working towards the development of sustainable and resilient energy infrastructures. The findings of the thesis can contribute to the advancement of knowledge in the field of energy storage technologies and their optimal management within smart energy systems. Using the potential of energy storage technologies in reshaping the energy landscape, this work hopes to pave the way for a cleaner and more efficient future.