Topic - 50Hertz

50Hertz Transmission GmbH (former name: Vattenfall Europe Transmission) is one of the four transmission system operators for electricity in Germany. It is a member of the European Network of Transmission System Operators for Electricity (ENTSO-E). It is wholly owned by Eurogrid GmbH, indirectly owned and managed by the Belgian transmission system operator Elia System Operator and Australian-based IFM Investors. - Source: Wikipedia