Battery storage systems are first and foremost a tool in the energy market. Unlike a hammer, they can be used in a variety of ways. In recent years, including at the ees Europe Conference, the use cases for storage have been discussed in detail. Whether battery storage turns out to be a successful tool depends on how it is used. In this session, we will show you how battery storage systems are being optimized, e.g. in virtual power plants, to maximize their return on investment and avoid negative consequences, such as accelerated aging.