Tasks of the Management Board

Tasks of the Management Board

The Management Board of Uniper SE manages the Company under its own responsibility in accordance with the law, the provisions of corporate by-laws and the rules of procedure for the Management Board and the Supervisory Board as well as the resolutions of the general meeting of shareholders. The Management Board represents the Company vis-á-vis third parties. It manages the business of the company with all its members bearing joint responsibility for its decisions.

The Management Board determines and updates business objectives, fundamental strategic orientation, corporate policy and group organization. This includes, in particular, supervision of the Group and its financial resources, the development of the human resources strategy, appointments to management positions within the Group and leadership development as well as representation of the Group to capital markets and the general public. In addition, it is responsible for the coordination and monitoring of operations in accordance with the established Group strategy.

The Management Board is appointed by the Supervisory Board and reports to the latter.

In this respect, the Management Board, headed by the CEO, reports regularly, comprehensively and in a timely manner to the Supervisory Board, on all relevant issues relating to corporate planning, business development, compliance, risk exposure and risk management. It responds to deviations in business performance from previously formulated plans and targets, providing details as to causes. The Management Board must, in principle, provide to the Supervisory Board a quarterly report on company matters as specified in Section 90 AktG (Stock Corporation Act) as well as reports on the group. The Management Board must also submit investment, financial and personnel plans for the Group to the Supervisory Board in addition to a medium-term plan.


Rules of Procedure for the Board of Management of Uniper SE
PDF - 148.35 KB
Members of the Management Board

Members of the Management Board

Effective June 1st, 2023, the Management Board consists of Michael D. Lewis, the Chief Executive Officer (CEO), Chief Sustainability Officer (CSO) and Labor Director; Dr. Jutta A. Dönges, the Chief Financial Officer (CFO); Holger Kreetz, the Chief Operating Officer (COO); and Niek den Hollander, the Chief Commercial Officer (CCO).

Michael D. Lewis

Chief Executive Officer (CEO) since June 1st, 2023

Michael Lewis

Born March 23, 1967



1985 - 1989

Leicester Polytechnic

BEng (Hons) Engineering Technology (IIi)

1989 - 1990

University of Manchester

MSc Pollution and Environmental Control

1993 - 1996

De Montfort University, Leicester

MA Environmental Law

1990 - 1991

EIA Centre, University of Manchester

Research Assistant

1991 - 1993

Wessex Water Plc

Environmental Scientist

1993 - 1999

PowerGen plc

Environmental Specialist

1999 - 2001

PowerGen plc

Strategy Analyst

2002 - 2004

PowerGen plc

UK Strategy Manager

2004 - 2007


Vice President, Corporate Strategy

2007 - 2015

E.ON Climate & Renewables GmbH

Chief Operating Officer (COO)


European Wind Energy Association (EWEA)

Member of the Board


E.ON Energy Research Centre, RWTH Aachen University

Member of the Advisory Board

2015 - 2017

E.ON Climate & Renewables GmbH

Chief Executive Officer (CEO)

2017 - 2023

E.ON UK plc

Chief Executive Officer (CEO)

Since June 2023

Uniper SE, Düsseldorf (Germany)

Chief Executive Officer (CEO), Chief Sustainability Officer (CSO) and Labor Director

Dr. Jutta A. Dönges

Chief Financial Officer since March 1st, 2023

Jutta Doenges

Born 1973




Technical University of Darmstadt, Germany

Joint masters degree in Economics and Mechanical Engineering

(Wirtschaftsingenieurwesen, Dipl.-Wirtsch.-Ing.)


Johann Wolfgang Goethe-University Frankfurt am Main; Germany

Doctorate to Dr. rer. pol.

1997 - 2010

Goldman, Sachs & Co. oHG, Frankfurt am Main, Germany

Various positions, last Executive Director Investment Banking Division

2010 - 2013

SEB AB Frankfurt Branch, Frankfurt am Main, Germany

Managing Director Corporate Finance Deutschland, Member of the global Corporate Finance Management Group


Bundesanstalt für Finanzmarktstabilisierung AöR, Frankfurt am Main, Germany

Member of the Management Board 

2016 - 2017

Bundesanstalt für Finanzmarktstabilisierung AöR, Frankfurt am Main, Germany

Chairperson of the Management Board

2018 - 2022

Finanzagentur GmbH, Frankfurt am Main, Germany

Member of the Executive Board 

Since 2020

Commerzbank AG, Frankfurt am Main, Germany

Member of the Supervisory Board
Since 2021 TUI AG, Hannover and Berlin, Germany Member of the Supervisory Board

Since 2023

Uniper SE, Düsseldorf (Germany)


Holger Kreetz

Chief Operating Officer since March 1st, 2023

Holger Kreetz

July 14, 1970 Born in Düsseldorf, Germany  
1991–1997 TU, Berlin Dipl.-Ing. (Masters) in Energy and process engineering
1998 – 2001 Australian National University, Canberra, Australia PhD in Engineering
2001 – 2006 E.ON Energy Projects GmbH, Munich, Germany  

Senior Project Executive 

2006 – 2007 E.ON Energie AG, Munich, Germany; Ankara Turkey   Project Manager
2007 – 2010 E.ON AG, Düsseldorf, Germany   Vice President New Build
2010 – 2011 E.ON New Build & Technology, Gelsenkirchen, Germany; Ratcliffe, UK   Division Head Business and Project Development
2011 – 2013 E.ON Turkey A.S, Istanbul, Turkey   Managing Director
2013 – 2016 EnerjiSA A.S. Istanbul, Turkey Chief Operating Officer
2016 – 2023 Uniper. Düsseldorf, Germany   Chief Operating Officer Asset Management
Since 2023 Uniper. Düsseldorf, Germany   Chief Operating Officer 


Niek den Hollander

Chief Commercial Officer since June 1st, 2020

Niek den Hollander

October 4, 1973

Born in Rotterdam (Netherlands)


1991 - 1997

Tilburg University

Degree: Master in Financial Econometrics


Tilburg (Netherlands)


1997 - 2002

Financial sector

Various trading positions




2002 - 2008


2002 - 2005: Various trading positions


Amsterdam (Netherlands)

2005 - 2006: Head of Structured Trading


2006 - 2008: Head of Long-term Energy Management


CFA Institute

Chartered Financial Analyst 

2006 - 2008

TiasNimbas Business School

Degree: Master in Business Administration (MBA)


Tilburg (Netherlands)


2008 - 2014


Head of Trading


Düsseldorf (Germany)


2014 - 2020


2014 - 2017: Head of Business Unit Trading


Hamburg (Germany)

2017 - 2020: Member of Executive Group Management, Head of Markets

Since 2020

Uniper SE

Chief Commercial Officer


Düsseldorf (Germany)


Our global presence

We continue to strengthen our presence in key markets, develop innovative solutions and acquire companies in prioritized areas. Uniper solutions are sold to over 100 countries and we currently operate in over 40 countries.