SUEDOSTLINK - Key Persons


Alexander Sewohl

Job Titles:
  • Press Officer

Andrea Ludwig

Job Titles:
  • Chairman of Workers Council, 50Hertz, Berlin

Anne-Sophie König

Job Titles:
  • Social Media Manager and Press Relations

Axel Happe


Boris Rogowski

Job Titles:
  • Compliance Coordinator

Brigita Jeroncic

Job Titles:
  • Head of Energy Policy

Britta Petersen


Christiaan Peeters

Job Titles:
  • Chairman / Chief Executive Officer Elia Group ( Belgium )

Dr. Dirk Biermann

Job Titles:
  • Chief Markets & System Operations Officer ( CMO )
Dr. Dirk Biermann, born in 1969, has been Chief Markets and System Operations Officer since 2012. Prior to his current position, he acted as proxy for the company and held the position of Head of Energy Management. As such, he was responsible for the company's energy trading activities, which also includes ancillary services, EEG affairs and balancing group management as well as market development and congestion management. In 1999, Dr Biermann joined VEAG, as it was called at the time. He later moved on to the Vattenfall Europe Holding in 2002, where he took up a leading position in the Grid Strategy Department in 2004.

Dr. Frank Golletz - CTO

Job Titles:
  • Chief Technical Officer
Dr. Frank Golletz, born in 1960, has been the Chief Technical Officer for 50Hertz since 2011. Before, he acted as proxy and Head of the Assets/Grid Projects Department at 50Hertz. Between 1992 and 1997, Frank Golletz was in charge of substations at the Dresden Grid Operation Department of VEAG. He was also stationed at the VEAG branch in Bad Lauchstädt, where he managed grid operations for Saxony-Anhalt and Thuringia.

Dr. Lutz-Christian Funke

Job Titles:
  • Secretary General / KfW Bank Group

Dr. Rainer Frank

Dr. Rainer Frank has been appointed as ombudsman of 50Hertz. He is a lawyer specialized in criminal law and in the area of economic criminal cases especially.

Jan Roessel


Johanna Martens

Job Titles:
  • Social Media Manager and Press Relations

Karin Erhard

Job Titles:
  • Deputy Chair / Managing Member of the Executive Board of the IG

Katrin Dietl

Job Titles:
  • Press Officer

Klemens Lühr


Lisa Wollny


Marco Nix

Job Titles:
  • Chief Financial Officer ( CFO
Marco Nix, born in 1974, has been responsible for 50Hertz's Finance Department since July 2015. Since 2009, the business economist was Head of Controlling at 50Hertz and in addition from April 2014 onwards the Chief Corporate and Financial Officer of Elia Grid International . Born in Berlin, Nix previously held senior positions in the financial sector of the Vattenfall Group. His professional career in the energy sector began in 2001 at the Berlin based energy company Bewag.

Marie Bartels


Markus Berger

Job Titles:
  • Chief Infrastructure Development Officer Elia System Operator SA ( Belgium )

Michael von Roeder

Job Titles:
  • Chief
Michael von Roeder is Chief Digital and IT Officer at 50Hertz and member of the steering committee of the Belgian-German Elia Group since late 2019 and responsible for the digital transformation of the Group. Prior to his position at 50Hertz, he was CEO of Sensorberg. Until mid of 2016 he was in charge of IT operations at Vattenfall. As COO he led the iconmobile group from 2009 to 2010. Michael von Roeder was manager at Vodafone and Accenture in London, Tokio und Düsseldorf. He studied Technology Management, Organization und International Business in Stuttgart and Lausanne.

Ralf Schloms

Job Titles:
  • Vice Chairman of Workers Council, 50Hertz, Neuenhagen

Robert Weigert

Job Titles:
  • Head of Treasury

Stefan Kapferer

Job Titles:
  • CEO of 50Hertz
  • Chief Executive Officer ( CEO
Stefan Kapferer has been CEO of 50Hertz since December 2019 and is also a member of the steering committee of the Belgian-German Elia Group. He looks back on a long career in politics and business. For several years he was State Secretary in various ministries at state and federal level - e.g. from 2011 on at the Federal Ministry of Economics. From 2014 to 2016 Kapferer was Deputy Secretary-General of the OECD in Paris.

Stefan Tophofen


Sylvia Borcherding - CHRO

Job Titles:
  • Chief Human Resources Officer
  • Chief Human Resources Officer ( CHRO )
Sylvia Borcherding is Chief Human Resources Officer at 50Hertz since 2019. Before, she has held leading positions in the Metro group, at healthcare provider IAS and at outsourcing specialist Capita.

Volker Gustedt

Job Titles:
  • Press Officer

Yvonne Post

Job Titles:
  • Offshore Projects