Supervisory Board
Christian Specht
Chairman of Supervisory Board, Lord High Mayor of City of Mannheim, Supervisory Board member since 2005 (Picture: © City of Mannheim)
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Born in Mannheim in 1966
Career
| since 8/2023 | Lord High Mayor of City of Mannheim |
| 2007 to 2023 | First Mayor of City of Mannheim Finance, public holdings, safety and public order, IT |
| since 3/2005 | Mayor of City of Mannheim (election as alderman for finance, housing, urban renewal, energy and water supply and public transport) |
| 2001 | Appointment as Director of Regional Planning Association Rhine-Neckar |
| 1997-2002 | Various positions (assistant, senior administrative director), Regional Planning Association Lower Neckar, Rhenish Pfalz Planning Consortium |
Education / training
| 1985 - 1997 | Study of law and political sciences, University of Mannheim and Ruprecht-Karls-University Heidelberg |
Positions held on other statutory supervisory boards of German companies
GBG Unternehmensgruppe GmbH, Mannheim (Chairman)
Rhein-Neckar-Verkehr GmbH, Mannheim (Chairman)
Universitätsklinikum Mannheim GmbH, Mannheim (Chairman)
Membership of comparable German and foreign company supervisory boards
GBG Wohnen GmbH, Mannheim (Chairman)
mg: mannheimer gründungszentren gmbh, Mannheim (Chairman)
MKB Mannheimer Kommunal-Beteiligungen GmbH, Mannheim (Chairman)
MWS Projektentwicklungsgesellschaft mbH, Mannheim (Chairman)
Sparkasse Rhein Neckar Nord, Mannheim (Deputy Chairman)
Stadtmarketing Mannheim GmbH, Mannheim (Deputy Chairman)
Verkehrsverbund Rhein-Neckar GmbH (VRN), Mannheim (Chairman)
Veranstaltungen - Tourismus - Marketing: Mannheim erleben GmbH (Chairman)
Status: 14th March 2025
Heike Kamradt-Weidner*
Deputy Chair of Supervisory Board, Chair of MVV Group Works Council, Supervisory Board member since 2012
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Born in Mannheim in 1969
Career
| since 2017 | Chair of MVV Group Works Council / Deputy Chair of Supervisory Board of MVV Energie AG, Mannheim |
| since 2017 | Unsalaried judge at Mannheim Labour Court |
| since 2010 | Member of Works Council (released from other duties) of MVV Energie AG, Mannheim |
| 1987-2010 | Various positions in sales, MVV Energie AG, Mannheim; Most recently deputy head of department, private customer sales / team leader for customer management |
Education / training
| 2011 | Mediator, Wismar Technical College |
| 1984 -1987 | Training as legal assistant, Mannheim |
Positions held on other statutory supervisory boards of German companies
- MVV Netze GmbH, Mannheim
Membership of comparable German and foreign company supervisory boards
- Soluvia Energy Services GmbH, Offenbach
- MVV Enamic GmbH, Mannheim
- MVV Trading GmbH, Mannheim
- Soluvia IT Services GmbH , Kiel
Status: 13th March 2025
Kathrin Biro*
Trade union secretary, Managing Director of ver.di Rhine-Neckar district, member of the Supervisory Board since October 2023
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born in 1987 in Karlsruhe, Germany
Career
| since 2023 | Managing Director ver.di Rhine-Neckar |
| 2020 | Deputy Managing Director ver.di Rhine-Neckar |
| 2014 - 2020 | Trade union secretary in the regional department for health, social services, education and science |
| 2013 - 2014 | Training as trade union secretary ver.di |
| 2009- 2012 | Trainer for chemical laboratory assistants at the Karlsruhe Institute of Technology |
| 2008- 2009 | Laboratory coordinator at the Institute of Chemical Technology at the Frauenhofer Gesellschaft |
Education
| 2005 – 2008 | Training as a chemical laboratory assistant at the Karlsruhe Research Center |
Status: 14th March 2025
Angelo Bonelli*
Trade Union Secretary ver.di Rhine-Neckar
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Born in Mannheim in 1975
Career
| since 2021 | Member of the Supervisory Board MVV Energie AG, Mannheim |
| since 2010 | Trade Union Secretary, Division 2, Utilities and Disposal Sector in Rhine-Neckar District, State Division Baden-Württemberg and Mittelbaden-Nordschwarzwald and Division 9, Telecommunications/IT in Rhine District minus Neckar |
| 2007 - 2010 | Chair of Works Council and Deputy Chair of General Works Council at Deutsche Telekom Kundenservice GmbH, Bonn |
| 1998 - 2007 | Chair of Works Council (released from other duties) at T-Mobile Deutschland GmbH, Mannheim |
| 1997 - 1998 | Commercial employee in customer service at T-Mobile Deutschland GmbH, Mannheim, member of Works Council |
Education
| 1993 - 1996 | Training as wholesale and export merchant at Thyssen Schulte GmbH, Mannheim |
Positions held on other statutory supervisory boards of German companies
- TransnetBW GmbH Stuttgart
Status: 13th March 2025
Timo Carstensen*
Deputy Chairman of Works Council of Stadtwerke Kiel AG, Supervisory Board member since 2012
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Born in Kiel in 1973
Career
| since 2011 | Deputy Chairman of Works Council of Stadtwerke Kiel AG, Kiel |
| 2006 - 2011 | Member of Works Council (released from other duties) of Stadtwerke Kiel AG, Kiel |
| 1994 - 2006 | Specialist worker, welding technology / master welder, Stadtwerke Kiel AG, Kiel |
Education / training
| 2000 | Master welder, SLV Nord Hamburg |
| 1990 - 1994 | Training as industrial mechanic / specialist in plant technology, Stadtwerke Kiel AG, Kiel |
Positions held on other statutory supervisory boards of German companies
- Stadtwerke Kiel AG, Kiel
Status: 14th March 2025
Sabine U. Dietrich
Supervisory Board Member, Consultant, Supervisory Board member since 2020
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Born in Munich in 1960
Career
| 2012 - 2015 | Board Director at BP Europe SE, Bochum |
| 2010 - 2011 | Director Safety & Operational Risk, Head of HSSEQ, Head of Ethics & Compliance, bp Europa SE, Bochum |
| 2005 - 2010 | Vice President Operations, Remediation Management EMEA & Asia Pacific bp plc., London/UK |
| 2005 | Innovation Project Leader “Refining & Marketing” India bp plc., Mumbai/India |
| 1999 - 2004 | Various roles in Commercial, Asset, and M&A Integration departments in Germany/Austria/Switzerland bp Europe |
| 1997 - 1999 | Business Development Manager Vietnam bp plc., Ho Chi Minh City, Vietnam |
| 1991 - 1997 | Various European management roles (including Business Improvement, People Task Force, Project Engineer) bp Europe, Brussels/Belgium |
| 1989 - 1990 | Product Planner & Project Management Steigenberger Hotels, Frankfurt |
Education / training
| 1992 | Registration as architect with Chamber of Architects, Berlin |
| 1984 - 1989 | Study of engineering, majoring in construction/architecture TU Berlin |
| 1978 - 1982 | A-levels (“Abitur”), evening class Schule für Erwachsenenbildung SfE, Berlin |
| 1976 - 1978 | Commercial training (clerical qualification) Isaria Reisen, Munich |
Positions held on other statutory supervisory boards of German companies
- Commerzbank AG, Frankfurt am Main
- H&R GmbH & Co. KG aA, Salzbergen
Status: 14th March 2025
Detlef Falk*
Chairman of Works Council of Stadtwerke Kiel AG, Supervisory Board member since 2007
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Born in Kiel in 1964
Career
| since 2012 | Deputy Chairman of MVV Group Works Council |
| since 2011 | Chairman of Works Council of Stadtwerke Kiel AG, Kiel |
| 2007 | Deputy Chairman of Works Council of Stadtwerke Kiel AG, Kiel |
| 2006 | Member of Works Council (released from other duties) of Stadtwerke Kiel AG, Kiel |
| 1995 - 2006 | Construction manager, strategy and controlling, district heating systems and grids, Stadtwerke Kiel AG, Kiel |
| 1989 - 1995 | Specialist worker, district heating systems and grids, Stadtwerke Kiel AG, Kiel |
Education / training
| 1990 | Recognised qualification as “Industry Master Tradesman – Metal Specialism” |
| 1982 - 1989 | Training as machinist, Stadtwerke Kiel AG, Kiel |
Positions held on other statutory supervisory boards of German companies
- Stadtwerke Kiel AG, Kiel
Membership of comparable German and foreign company supervisory boards
- Soluvia Energy Services GmbH, Offenbach
- Soluvia IT-Services GmbH, Kiel
Status: 14th March 2025
Martin F. Herrmann
Business Angel and Mentor, Supervisory Board member since 2021
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Born in Düsseldorf in 1967
Career
| since 2020 | Business angel & mentor Cooperation with StartupYard accelerator and support for international start-ups as business angel and mentor |
| 2016 - 2019 | COO Retail, Executive Board member, innogy SE, Essen, Germany |
| 2012 - 2019 | CEO, innogy Česká republika a.s. (until 9/2016: RWE Česká republika a.s.), Prague, Czech Republic |
| 2013 - 2019 | CEO, innogy Grid Holding, a.s. (until 9/2016: RWE Grid Holding, a.s.), Prague, Czech Republic |
| 2010 - 2016 | CEO, RWE East, s.r.o., Prague, Czech Republic |
| 2007 - 2013 | CEO, RWE Transgas, a.s. (since 1/2013: RWE Supply & Trading CZ, a.s.), Prague, Czech Republic |
| 2004 - 2007 | CFO, Deputy CEO, RWE Transgas, a.s. (until 4/2005 Transgas, a.s.), Prague, Czech Republic |
| 2002 - 2004 | CFO, Executive Board member, Transgas, a.s., Prague, Czech Republic |
| 2001 - 2002 | Vice President, Head of Industry Group Utilities, Commerzbank AG, Frankfurt am Main, Germany |
| 2000 - 2001 | Project Manager, M&A, Commerzbank AG, Frankfurt am Main, Germany |
| 1995 - 1999 | Head of Investment Banking department, Commerzbank AG, Prague Office, Prague, Czech Republic |
| 1994 - 1995 | Project Manager Relationship Management Central & Eastern Europe, Commerzbank AG, Frankfurt am Main, Germany & Prague, Czech Republic |
| 1993 - 1994 | Trainee, Relationship Management Central & Eastern Europe Commerzbank AG, Frankfurt am Main, Germany & Prague, Czech Republic |
Education / training
| 1988 - 1993 | Study of economics (Dipl.-Volkswirt), Westfälische Wilhelms-Universität, Münster, Germany |
| 1986 - 1988 | Bank traineeship, Dresdner Bank AG, Duisburg Branch, Duisburg, Germany; qualification as bank clerk |
Membership of comparable German and foreign company supervisory bodies
- Česká pošta, s.p., Prag, Czech Republic (Chairman)
Status: 14th March 2025
Barbara Hoffmann
Auditor, Tax Advisor, Supervisory Board member since 2016
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Born in Neunkirchen / Saar in 1955
Career
| since 2019 | Self-employed auditor in her own firm |
| since 2017 | Partner and Managing Director at 3D GmbH Steuerberatungsgesellschaft |
| 2014-2018 | Partner and Managing Director at 3D GmbH, Wirtschaftsprüfungsgesellschaft, Mannheim / Leipzig |
| since 1995 | Self-employed auditor with own practice |
| since 1990 | Self-employed tax advisor with own practice |
| 1987-1990 | Managing director of a tax advisor company, Stuttgart |
Education / training
| 1995 | Qualification as auditor |
| 1987 | Qualification as tax advisor |
| 1982-1985 | Postgraduate studies in tax law and tax theory |
| 1977-1982 | Study of business administration (Dipl.-Kauffrau), University of Mannheim |
Positions held on other statutory supervisory boards of German companies
- Berliner Stadtreinigungsbetriebe, Anstalt des öffentlichen Rechts, Berlin
Status: 14th March 2025
Dr. Simon Kalvoda*
Head of Facility Management at MVV Energie AG, Member of the Supervisory Board since 2022
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born 1969 in Andernach
Career
| 2017 to date | Head of Facility Management Department, MVV Energie, Mannheim |
| 2011 - 2017 | Chair of Management/Commercial Director, Soluvia GmbH, Mannheim |
| 2010 - 2017 | Commercial Director at Soluvia Billing GmbH, Soluvia Metering GmbH, Offenbach/Main, and Soluvia IT Services GmbH, Kiel |
| 2006 - 2010 | Technical Director at 24/7 Netze GmbH, Mannheim |
| 2006 | Head of Grids Division, MVV Energie, Mannheim |
| 2004 - 2006 | Head of Grids Management Department, MVV Energie, Mannheim |
| 2002 - 2004 | Executive Board Assistant Technology, MVV Energie, Mannheim |
| 1999 - 2002 | Consultant, McKinsey & Company Inc., Berlin |
| 1995 - 1999 | Doctoral Student then Academic Employee, Max Planck Institute for the Physics of Complex Systems, Dresden |
Training / Qualifications
| 1995 - 1998 | Doctorate in Physics (Dr. rer. nat.), Technische Universität Dresden |
| 1989 - 1995 | Degree in Physics, Ruprecht-Karls-Universität, Heidelberg |
Status: 14th March 2025
Gregor Kurth
Igneo Infrastructure Partners (Igneo), London, Great Britain; Member of the Supervisory Board since 2020
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Born in Cologne in 1981
Career
| since October 2020 | Partner, Infrastructure Investments, First Sentier Investors, London, Great Britain |
| since 2019 | Head of Transactions, Infrastructure Investments, First State Investments, Great Britain |
| 2015 - 2019 | Director, Infrastructure Investments, First State Investments, Great Britain |
| 2013 - 2015 | Associate Director, Infrastructure Investments, First State Investments, Great Britain |
| 2010 - 2013 | Senior Executive, Infrastructure Investments, First State Investments, Great Britain |
| 2008 - 2009 | Investment Analyst, 3i Group plc., Frankfurt |
| 2006 - 2008 | Analyst, Deutsche Bank AG, Frankfurt |
Education / training
| 2005 - 2006 | Master of Science (M.Sc.) in International Accounting and Finance, Sir John Cass Business School, Great Britain |
| 2002 - 2005 | Bachelor of Science (B.Sc.) in International Business Economics, University of Maastricht, Netherlands |
Membership of comparable German and foreign company supervisory boards
- Utilitas Group, Tallinn, Estonia
- Owlcasle Holdings Limited, London, Great Britain
- westconnect GmbH, Essen, Germany
- terralayr AG, Zug, Schweiz
Status: 13th March 2025
Thoralf Lingnau*
Member of Works Council MVV Energie AG, Supervisory Board Member since 2020
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Born in Stralsund in 1965
Career
| Since 2018 | Works Council member (released from other duties), MVV Energie AG, Mannheim |
| 2010 - 2018 | Organisation manager, MVV Energie AG, Mannheim |
| 2006 - 2010 | Controller, MVV Energie AG, Mannheim |
| 1991 - 2006 | Project manager, project controller for major projects, MVV Energie AG, Mannheim |
Education / training
| 2006 - 2007 | Horvath Akademie, Horvath Diploma in Controlling |
| 1996 | Rationalisierungs-Kuratorium der Deutschen Wirtschaft e.V., Project management specialist |
| 1986 - 1991 | Ingenieurhochschule für Seefahrt Warnemünde/Wustrow, graduate in engineering |
| 1981 - 1983 | Rostock Vocational Training Centre, training as merchant navy sailor |
Membership in comparable domestic and foreign supervisory bodies of commercial enterprises
MVV Enamic GmbH, Mannheim
Status: 14th March 2025
Dr. Lorenz Näger
Former Deputy Chairman of the Board of Management and Chief Financial Officer of HeidelbergCement AG (now Heidelberg Materials AG), Supervisory Board member since 2011
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Born in Ravensburg in 1960
Career
| 2020 - 08/2021 | Deputy Chairman of the Board of Management and Chief Financial Officer of HeidelbergCement AG, Heidelberg |
| 2004 - 2020 | Member of Executive Board & Chief Financial Officer of HeidelbergCement AG, Heidelberg |
| 1999 - 2004 | Member of Executive Board of PHOENIX Pharmahandel AG, Mannheim |
| 1997 - 1999 | Managing Director of PHOENIX International Beteiligungs GmbH, Mannheim |
| 1993 - 1997 | Head of Corporate Development, PHOENIX Pharmahandel, Mannheim |
| 1991 - 1993 | Head of tax department, Ferd. Schulze GmbH, Mannheim |
| 1988 - 1991 | Assistant at Institute of General Business Administration and Corporate Taxation, University of Mannheim |
| 1987 - 1988 | Audit Assistant, Dr. Lipfert GmbH Wirtschaftsprüfungs- und Steuerberatungsgesellschaft, Stuttgart |
Education / training
| 1991 | Doctorate and professional qualification as tax advisor |
| 1981 - 1986 | Study of business administration, Universities of Regensburg, Swansea (Wales) and Mannheim |
Positions held on other statutory supervisory boards of German companies
- PHOENIX Pharma SE, Mannheim
- Blanc & Fischer Familienholding SE & Co.KGaA, Oberderdingen, Deutschland
Membership of comparable German and foreign company supervisory boards
- PHOENIX Pharma-Handel GmbH & Co. KG, Mannheim, Germany
Status: 14th March 2025
Alexandros Nassuphis
Managing Director bei Igneo Infrastructure Partners, London UK, Supervisory Board member since May 2025
Erik Niedenthal*
Chairman of Works Council of EVO AG, Offenbach, Supervisory Board member since 27.10.2022
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Born 1970 in Langen
Career
| since 2022 | Chairman of Works Council at Energieversorgung Offenbach AG, Offenbach |
| 2006 - 2022 | Deputy Chairman of Works Council at Energieversorgung Offenbach AG, Offenbach |
| 2004 - 2006 | Project Manager, Company Development Department |
| 2003 - 2004 | Coordination Manager, Company Development Department |
| 2001 - 2003 | IT Systems & Network Management |
| 1997 - 2001 | IT / Office Communications / Applications Management Assistant |
| 1991 - 1997 | Specialist Fitter for Network Cabling, Electrical, Air Conditioning, Ventilation and Management Technology in Metrology and Telecommunications Department |
Training / Qualifications
| 1992 - 1996 | Certified technician and trainer for vocational and work-based training, Darmstadt |
| 1987 - 1991 | Training as electrical systems fitter / electrical systems electrician, Energieversorgung Offenbach AG, Offenbach |
Positions held on other statutory supervisory boards of German companies
- Energieversorgung Offenbach AG, Offenbach (deputy chairman)
Membership of comparable German and foreign company supervisory boards
- Soluvia Energy Services GmbH, Offenbach
- Soluvia IT-Services GmbH, Kiel
Status: 14th March 2025
Dr. Volker Proffen
Mayor of City of Mannheim, Supervisory Board member since October 2023
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born 1978 in Mannheim
Career
| since 10/2023 | Mayor of City of Mannheim |
| 2020 – 2023 | Head of Politics, Südzucker AG, Mannheim |
| 2015 – 2020 | Sustainability Coordinator, Südzucker AG, Mannheim |
| 2009 – 2015 | Personal Assistant to the Chairman of the Executive Board, Südzucker AG, Mannheim |
| 2007 – 2009 | Consultant Harder BR GmbH, Stuttgart |
| 2003 – 2007 | Working student and doctoral candidate, Daimler AG, Stuttgart |
Education
| 2008 | Doctorate (Dr. rer.pol.) |
| 2004 – 2008 | Doctoral programme, EBS Oestrich-Winkel |
| 2002 – 2003 | Postgraduate programme, EADA Business School, Barcelona |
| 1999 – 2002 | Dual study programme, DHBW Mannheim / Friatec AG, Mannheim |
Membership of comparable domestic and foreign supervisory bodies of German companies:
- MKB Mannheimer Kommunalbeteiligungen GmbH, Mannheim (Deputy Chairman)
- MV Verkehr, Mannheim (Chairman)
Status: 14th March 2025
Tatjana Ratzel
Lawyer, Department Manager at INTER Krankenversicherung AG, Mannheim, Supervisory Board member since 2020
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Born in Ludwigshafen am Rhein in 1971
Career
| since 2013 | Lawyer, Department Manager at INTER Krankenversicherung AG, Mannheim |
| 2004 | Registration as attorney-at-law |
| since 2002 | INTER Versicherungsgruppe, Mannheim Head Office |
| 2001 - 2002 | Vereinte Krankenversicherung AG, Karlsruhe, Health Insurance division |
| 2000 - 2001 | Mannheimer Versicherung AG, Mannheim Head Office |
Education / training
| 1999 | Second State Examination in Law, graduation as fully qualified lawyer |
| 1997 - 1999 | Legal traineeship, Heidelberg District Court |
| 1997 | First State Examination in Law |
| 1991 - 1996 | Study of law at Mannheim University |
Status: 13th March 2025
Andreas Schöniger*
Deputy Chairman of Works Council of MVV Energie AG, Supervisory Board member since 2022
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Born in Ludwigshafen in 1975
Career
| since 2022 | Deputy Chairman of Works Council of MVV Energie AG, Mannheim |
| since 2017 | Member of Works Council (released from other duties) of MVV Energie AG, Mannheim |
| 1996 - 2016 | System analyst at group companies of MVV Energie AG, Mannheim |
Education / training
| 1992 - 1996 | Apprenticeship as electromechanic, MVV Energie AG, Mannheim (formerly Stadtwerke Mannheim AG) |
Membership of comparable German and foreign company supervisory bodies
- MVV Trading GmbH, Mannheim
- MVV Umwelt GmbH, Mannheim
Status: 14th March 2025
Susanne Schöttke*
State Regional Director at ver.di North, Supervisory Board member since 2021
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Born in Lübeck in 1974
Career
| since 2017 | State District Director, ver.di Nord, Lübeck |
| 2009 --2017 | Director, ver.di District Kiel-Plön, Kiel and active as trade union secretary in various divisions |
| 2006 - 2009 | Deputy Director, ver.di District Kiel-Plön, Kiel and active as trade union secretary in various divisions |
| 2001 - 2005 | ÖTV Youth Secretary (District Administration Lübeck), |
Education
| 2000 - 2004 | Postgraduate study in commercial and labour law at Fernuniversität in Hagen |
| 1994 - 1999 | Studies in educational sciences at Hamburg University and Free University of Berlin |
Positions held on other statutory supervisory boards of German companies
- Deutsche Telekom AG, Bonn
Status: 13th March 2025
* representative of the employees
