The German turbine manufacturer invested more than €4bn ($4.56bn) globally last year, a figure that is slated to rise in 2016, Kettwig said during the Hanover industrial fair. But he cautioned that spending in the years after that will depend on government policy.

Enercon reckons Europe's biggest onshore market will go down continuously from an expected 3.5GW this year to 2GW in 2019.