Vattenfall Europe Nuclear Energy GmbH has ownership in three nuclear power plants in Germany. It is located in Überseering 12 22297 Hamburg. http:--www. firmendb. de-firmen-375297. php Brunsbüttel Nuclear Power Plant (66 7 % Vattenfall Europe Nuclear Energy GmbH 33 3 % E. ON) taken out of service in 2007. Krümmel Nuclear Power Plant (50 % Vattenfall Europe Nuclear Energy GmbH 50 % E. ON) reactor not in service since 4 July 2009.