Terium is a trained accountant and began his career as an auditor at the Ministry of Finance (Netherlands) followed by positions at KPMG as well as Schmalbach-Lubeca.
In July 2005, Peter Terium was appointed Chief Executive Officer of RWE Trading GmbH.
[1] He was appointed Deputy Chairman of the Executive Board of RWE AG on 1 September 2011.
From 1 July 2012 until 14 October 2016 Terium was Chief Executive Officer of RWE AG.
While Rolf Martin Schmitz succeeded him in this position in 2016,[2][3] he moved to RWE's subsidiary Innogy SE, where he functions as CEO since 1 April 2016.