He also admitted that the physical location of such facilities is largely irrelevant.

Schindlbeck’s acknowledgement that US power prices – hammered down in recent years by the shale gas boom – played the decisive factor in its decision comes against a backdrop of increasing handwringing in Germany over the cost of the country’s Energiewende, or energy transition.

Munich-based Wacker announced in 2010 its plan to build a 15,000-tonne polysilicon factory in the US state of Tennessee, with more than 600 jobs to be created.