Management of a distributed battery arrangement

A computer implemented method for managing a distributed battery arrangement, wherein the arrangement comprises a pool of battery assets (-), wherein the battery assets of the pool are individually owned. The method is performed by obtaining real time data relating to current state of the battery assets of the pool, wherein the current state of the battery assets of the pool comprises at least information about capacity and wear profile of the battery assets of the pool; and selecting one or more battery assets from the pool based on the obtained real time data to fulfil a capacity requirement for frequency balancing of electric grid ().