 Lithium-ion battery technologies offer high energy density and long cycle life, making them suitable for use in stationary energy storage systems. These systems can be designed to meet the needs of different applications, such as peak shaving, frequency regulation, and renewable energy integration. The review provides guidelines for selecting the most appropriate battery technology, system architecture, and operating strategies for each type of application. It also discusses the importance of considering the entire system when optimizing performance and maximizing profits. Future research should focus on developing a holistic system-level approach that considers both the individual components and the overall system. This article was authored by Holger, C. Hesse, Michael Schimp, Daniel Cusevik, and others.