The field of application determines the system capacity and nominal power (specification). The used storage technology (e.g. kinetic energy storage, lithium-ion battery etc.) has to be selected and designed (design). Making these decisions without considering the operational strategy leads to an under- or overdesized storage system. A main driver of the profitability of energy storage systems is its operational strategy and it should be considered from the very beginning in the development process.
The operational strategy determines the behavior of the energy storage system in the field of application. For an optimal behavior, the operational strategy has to consider the systems state of charge as well as the applications future demands.
As a result, operational strategy has a high impact on the overall system properties. Considering the operational strategy in the state of specification and design allows for an optimal decision. An intelligent operational strategy allows for a considerable reduction of the system capacity. By avoiding unnecessary charge and discharge cycles, the energy efficiency increases and the deterioration of the system is reduced. Hence, an appropriate operational strategy also lowers the operating costs and increases the system’s lifetime.