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The need for storage capacity depending on the share of renewable energies is discussed based on the review of 16 relevant studies with the focus on Germany and Europe. Furthermore, the transferability to other situations is analyzed.

Several estimates for required storage power and energy capacity can be derived from the studies, which at the same time reflect particularly the influence of the technology mix for the energy supply system assumed. Thus, an analysis of total balancing need caused by the use of fluctuating renewable energy sources was found to be more promising than the analysis of the need for storage or the potential for specific storage technologies. The analysis of the general transferability of results on balancing and storage need from one region to another shows that a use of estimates for other situations requires an adequately detailed case-dependent consideration of various framework …