 In 2016, the nuclear energy company of E.ON was renamed PreussenElektra GmbH.PreussenElektra was established in Berlin in 1927 when electricity suppliers "Grosskraftwerk Hannover AG", "Preussische Kraftwerke Oberweser AG", and "Gewerkschaft Grosskraftwerk Main-Weser" merged to form PreussenElektra.It operated two thermal power stations, Borken in Hesse and Ahlem in Hanover, and eight hydroelectric stations.