The €4.9bn ($5.9bn) merger of E.ON and fellow German utility Innogy has raised questions of “fairness” over the value of the deal and the future of employees, said Innogy's management and supervisory boards.

Earlier this year, E.ON launched a voluntary public takeover offer for Innogy at €40.00 per share, aiming to acquire RWE’s 76.8% stake in Innogy as part of a wide-ranging swap of assets and shareholdings.