Supporting Information S1: This supporting information contains additional information on structural vulnerabilities of the energy system of the metropolitan region Bremen-Oldenburg, as well as a discussion of issues that arose during a near power shortage in February 2012 in Germany, France, Austria, and Switzerland.

Supporting Information S2: This supporting information contains tables showing (1) the evolution of the 30-year averages of selected climate parameters in the climate scenarios for MPR and (2) climate change impact on the relative frequency of voltage range deviations in a distribution grid.

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