After the merger of VEBA, the parent company of PreussenElektra, and VIAG, the owner of Bayernwerk, in 2000, PreussenElektra merged with Bayernwerk to form E.ON Energie, a subsidiary of E.ON.
The merger in 2000 between VEBA and VIAG led to PreussenElektra merging with Bayernwerk to form E.ON Energie, a subsidiary of E.ON.