MES technologies, such as liquid air energy storage (LAES), gravity-based energy storage (GES), and geomechanical pumped storage are leading this energy revolution, offering innovative solutions to meet the increasing demands of the energy storage industry. Hence, mechanical energy storage systems can be deployed as a solution to this problem by ensuring that electrical energy is stored during times of high generation and supplied in time of high demand. This work presents a thorough study of mechanical energy storage systems. As the global shift towards decarbonization accelerates, the need for long-duration energy storage solutions is growing. Explore energy storage resources Simple physics meets advanced. In addition to compressed air energy storage solutions, pumped-storage power plants have established themselves as large-scale facilities for stationary electromechanical storage of energy.