Storages crucial for large scale integration of fluctuating renewables Market forecasts for residential battery storages very promising Especially lithium-ion battery systems very interesting for the use in grid-connected PV applications Lithium-ion batteries on the way to be profitable, dependent on the specific application and the corresponding boundary conditions (1) But: Cost still have to be decreased → Detailed cost analyses important Multiple use of storage systems may improve the economics and is crucial from a technical point of view Advanced operating control strategies combine self consumption with additional grid services But: There are more flexibility options in the (distribution) grid, which also have to be considered → Smart integrated system solutions necessary.
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