"Brazil is that country you sometimes love to be in, and sometimes not so much. Enercon by now has been in Brazil for 20 years and, believe me, it hasn't always been just sunshine and roses," Kettwig said at a presentation during the Hanover industrial fair.

Brazil is passing through its worst political and economic crises in decades as former political allies now turned foes of President Dilma Rousseff are close to ousting her - at least temporarily - in impeachment proceedings that have stirred huge street protests.