Energy storage systems comprise various internal modules that work cohesively to store, manage, and deploy energy efficiently. Key modules include battery systems, power conversion systems, control systems, and thermal management units. Each module is integral to enhancing performance. . Energy storage systems will be fundamental for ensuring the energy supply and the voltage power quality to customers. This survey paper offers an overview on potential energy storage solutions for addressing grid challenges following a "system-component-system" approach. Think of it as a financial tool for your energy assets: it allows you to decouple the moment of energy generation from the moment of energy consumption. They are crucial to integrating renewable energy sources, meeting peak demand, increasing power quality, and ensuring power stability. Among the many grid storage technologies. . This Technical Briefing provides information on the selection of electrical energy storage systems, covering the principle benefits, electrical arrangements and key terminologies used. Recognized for their indispensable role in ensuring grid stability and seamless integration with renewable energy sources. These storage. .