Coal and gas-fired power plants have become "largely uneconomic to operate", especially due to the speedy growth of renewable energy sources, the company noted.

E.ON chief executive Johannes Teyssen was quoted by Financial Times as saying that "We can’t just continue operating conventional plants in the hope something will change."

The company would decide on the closure of its Irsching power station in Bavaria in March and other plants could follow, Teyssen noted.

The German government already announced its plans to replace nuclear power with renewable energy sources by 2022, adding to the boom in green energy investments.