The exponential growth of variable renewable energy sources creates technical challenges in the electricity networks. An innovative solution for these problems is, implementing electrical energy storage into these networks. The liberalised energy system in the Netherlands gives the possibility for multiple actors to become owners of such storage system. The differences in conditions and objectives make for the storage to be used differently. The biggest distinction is made in where, before and after transmission, the cost allocation of the actor is situated. Before transmission, the storage capacity strategy is dependent on portfolio contents and balancing market incentives. After transmission, a daily cycle appears to be the best strategy to minimise costs. The shape of this daily cycle is dependent on decentralised generation of electricity. The before transmission positioning of electrical energy storage has significant positive influence on network imbalances. ... Read more