A process for the provision of control power using energy stores

The present invention relates to a method for the provision of control power for the stabilization of an AC network, where the AC network is operating at a preset frequency, comprising absorb an energy store, the electrical energy and can release, wherein the energy storage with at least one unit for loading and / or unloading of energy storage is connected, said unit withdraws or for loading and / or unloading of the energy accumulator the energy store energy with a power of at most less than or equal 20% of the contracted maximum performance of the energy store feeds.