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  • German BioEnergie Association. Member of the scientific and political board
  • German Solar Association
  • German Wind Power Associaation
  • VDI
  • Research Center for Energy Economics (FfE)
  • Eurosolar e.V.

Dr. -Ing.
Matthias Eichelbrönner

Managing Director

Matthias Eichelbrönner advises companies, investores and institutions in matters of project development, financing, implementation and operation of renewable energies projects. Based on 25 years of expericence his consultation includes issues related to engineering, feasibility studies as well as the financeability of projects and related due diligence of projects transactions or project restructuring.

He focuses on bioenergy, solar energy, hydro power and wind power as well as storage technologies for customers in Germany and Europe. In addition, he is operating in Asia.

Matthias Eichelbrönner founded together with Dipl.-Ing. (FH) Daniel Heiler the company E.Quadrat GmbH in the year 2006. Since 2011 he is Visiting Professor for Renewable Energies at University of Applied Sciences Mannheim.


Since 10/2011

Visiting Professor for Renewable Energies, University of Applied Sciences Mannheim

01/2008 - 01/2010

Interimsmanagement Technical Director Europe, EPV Solar Inc., USA


Founder E.Quadrat GmbH, Mannheim

07/2004 – 10/2005

Managing Director, MVV BioPower GmbH, Mannheim

06/2003 –10/2005

Supervisory Board, Biomasse Rhein-Main GmbH, Flörsheim

10/2001 – 12/2004

Managing Director, MVV Erneuerbare Energien GmbH

05/2000 – 10/2001

Technical Advisor to CTO, MVV Energie AG

04/1997 – 04/2000

Foundation and Management, German BioEnergy Association, Bonn


Doctoral Degree Engineering, Technical University Berlin

01/1990 – 03/1997

Officer Renewable Energies and Energy Efficiency, Forum für Zukunftsenergien e. V., Berlin

08/1987 – 12/1989

Project Engineer, Solar-Wasserstoff-Bayern GmbH, Munich

05/1986 – 08/1987

Research Associate, Research Center for Energy Economics, Munich


Master of electrical engineering, Technical University Munich

E-Mail: Matthias.Eichelbroenner@equadrat-gmbh.eu

Tatjana Pauling

Managing Director

Energy Markets

Tatjana Pauling has a long-term experience in energy procurement and energy cost optimization. For over 20 years, she has been working for a range of well-established energy service and contracting companies, being in charge of all kinds of industry projects and covering issues such as power and gas purchasing, emissions trading, renewables as well as energy taxes and charges. She joined the E.Quadrat team in 2017 and became partner in 2021.


Since 2021

Managing Director and Partner, E.Quadrat, Mannheim


Senior Expert Energy Markets, E.Quadrat, Mannheim


Procurement Energy and Fuels, Bosch Energy and Building Solutions GmbH, Heidelberg


Project Manager Energy Markets, Bosch Energy and Building Solutions GmbH, Heidelberg


Project Manager Energy Procurement / Project Management, Energiecontracting Heidelberg AG, Heidelberg


Director Energy Procurement, STEAG Energie-Contracting GmbH, Heidelberg


Senior Account Manager, Energipartner GmbH, Essen and Düsseldorf


Junior Consultant, ConEnergy Beratung für die Energiewirtschaft GmbH & Co. KG, Essen


Dipl.-Ing. Power and Process Engineering, TU Berlin

E-Mail: tatjana.pauling@equadrat-gmbh.eu

Dipl.-Ing. (FH)
Jürgen Petroll


Jürgen Petroll has been working for more than 20 years in the energy sector. He focuses on the designing/ planning of generation assets in the field of district heating, bioenergy, combined heat and power generation, supervision and implementation of energy efficiency provisions as well as advising on question of energy management (provision of fuel, contracting, project financing). Based on his experience he assisted key accounts as well as the public sector in realizing projects over the past years.


since 2021

Partner, E.Quadrat GmbH, Mannheim

2015 - 2020

Managing Partner, E.Quadrat GmbH, Mannheim

2008 - 2015

Owner, Petroll Projektmanagement - Energiedienstleitung- und Beratung, Heidelberg

2006 - 2008

Project Manager, Imtech Contracting GmbH & Co. KG, Heidelberg

2002 - 2006

Project Manager, STEAG Energie-Contracting GmbH, Heidelberg

2000 - 2002

Head of Project, STEAG Energie-Contracting GmbH, Heidelberg

1998 - 2000

Project Engineer, Mainova AG, Frankfurt

1994 - 1998

Project Engineer / Head of Project, Engineering Consultants Lorentzen, Frankfurt


Dipl.- Ing. (FH) Power & Thermal Engineering, University of Applied Science Gießen-Friedberg, Germany

E-Mail: juergen.petroll@equadrat-gmbh.eu

Dipl.-Volksw., MSc
Martina Schweneke


Due to her professional experiences in the energy industry gained at a utility as well as at research institutes and her background of the banking sector Martina Schweneke has a sound knowledge of analysis. Thus, she analyzes and forecasts individual and macro-economic developments in the energy industry in order to derive decision and recommendations for companies and organizations. In addition, she carries out economic appraisals.


Since 2014

Analyst, E.Quadrat GmbH, Mannheim


MSc Environmental Sciences, Open University Hagen in co-operation with Fraunhofer Institute for Environmental, Safety, and Energy Technology UMSICHT

10/2009 - 04/2011

Approved Academic Assistant, Centre for European Economic Research, Mannheim, Simulation of the European emission trading

2007 – 2008

Freelancer, Wuppertal Institute for Climate, Environment and Energy, Wuppertal

2003 - 2014

Investment Controller, ACCERA Venture Partners AG, Mannheim

2001 - 2002

Junior Analyst, Dresdner Kleinwort Wasserstein Research GmbH, Frankfurt

1999 - 2001

Commercial Trainée, MVV Energie AG, Mannheim


Economist (Dipl-Vw.), University of Bonn

E-Mail: martina.schweneke@equadrat-gmbh.eu

Prof. Dr.-Ing.
Wolfgang Kottnik

Senior Expert

After more than 40 years of professional life Prof Wolfgang Kottnik has gained a varied experience, which he uses as consultant to industry as well as for his job as lecturer. Within the scope of his teaching activity at the University of Applied Sciences Mannheim he was involved in several research projects with industrial enterprises ("model city Mannheim": smart grid project, "future fleet": electric mobility, and "energy bank": local energy storage in the grid). He is accredited as energy auditor for carrying out energy audits in compliance with the energy services act according to BAFA.


Since 2016

Approved Energy Consultant for Non-Residential Buildings, Plants and Systems (BAFA)

Since 01/2015

Partner, E-Quadrat, Mannheim

04/2002 - 02/2015

Professor of Higher Education for Energy Economics, Power Plant Technology, Energy Efficiency and Project Management, University of Applied Sciences Mannheim

01/1995 - 03/2002

Professor of Higher Education for Energy Economics and Project Management, University of Applied Sciences, Flensburg

01/1988 - 12/1994

Layout Engineer and Head of Project for Huge National and International Power Plant Projects, STEAG AG, Essen

09/1974 - 12/1987

Layout Engineer for National and International Power Plant Development/ Construction and Operation, RWE AG , operating globally

E-Mail: Wolfgang.Kottnik@equadrat-gmbh.eu

M.Sc., Dipl.-Wirt.-Ing.(FH)
Oliver Franz

Projekt Member

After finishing high school and studying industrial engineering (diploma thesis on a hydropower project), Oliver Franz initially worked as an application engineer for lubrication systems for wind turbines.

To deepen his knowledge, he completed a master's degree in "Renewable Energies and Energy Efficiency" at the University of Kassel. The master thesis took place at the Fraunhofer Institute for Wind Energy and Energy System Technology.

After his time as a research assistant at the Competence Center for Energy Economics, Energy Efficiency and Electric Mobility at University of Applied Sciences Mannheim, he started working for E.Quadrat in the field of renewable energies, electric mobility and energy management.


Since 2016

Project Member, E.Quadrat GmbH & Co. Energy Experts KG, Mannheim

2012 – 2016

Research Assistant at the Competence Center for Energy Economics, Energy Efficiency and Electric Mobility, University of Applied Sciences Mannheim

2008 – 2010

Master's Degree in "Renewable Energies”, University of Kassel; Master Thesis at Fraunhofer IWES, Kassel

2005 – 2008

Application Engineer in the team Wind Energy at SKF Lubrication Systems Germany AG, Hockenheim

2000 – 2004

Industrial Engineering, University of Applied Sciences Mannheim; Diploma Thesis at Pfalzwerke AG, Ludwigshafen

E-Mail: oliver.franz@equadrat-gmbh.eu

Dipl.-Ing. (FH)
Daniel Heiler

Senior Expert

Wärmeversorgung und Wärmenetze

Daniel Heiler founded, together with Dr. Matthias Eichelbrönner, E.Quadrat GmbH in the year 2006 and headed the company until 2020. Mr. Heiler can rely on expertise gained while working with district heating systems for more than 30 years, both abroad and in Germany. After some projects in the fields of biogas and bioenergy, Mr. Heiler lately was adviser to a deep geothermal project near Munich for several years. The project also comprises a district heating system with a length of some 60 km (trace) for a small city. Mr. Heiler has deeper experience concerning balancing power, especially connected with Power to Heat facilities, and he is also specialized in solar heat in combination with district heating, as well as preparation of heating and cooling concepts in combination with renewable energies.


12/2011 - 12/2020

Adviser for district heating and energy concepts (heating and cooling) including implementation and survey of projects, Bosch EBS, Heidelberg

07/2008 - 11/2011

Managing Director, Astherm group, Oberhaching-München; develeopment of a deep geothermal project till start of the drilling process, including a district heating concept; development and impelemntation of an interconnection to a neighbouring geothermal project


Founder of E.Quadrat GmbH, Mannheim

10/2002 - 09/2005

Member of the Board, MVV Polska, Warsaw

08/1998 - 10/2002

Founder & Technical Director, MVV ESCO Polska, Warsaw

07/1995 - 08/1998

Project Manager, MVV Consulting, East Europe

02/1992 - 07/1995

Deputy Head of Department Heat Generation and Heat Management, MVV Mannheim

09/1986 - 02/1992

Department Basic Design: Development of Compact Heating Stations and District Heating Valves & AGFW Association Work, MVV Mannheim

02/1983 - 09/1986

Project Engineer for Heating, Ventilation and Air Conditioning, Süba, Hockenheim


Dipl. - Ing. (FH) for Supply Techniques, University of Applied Science Esslingen

E-Mail: daniel.heiler@equadrat-gmbh.eu

Christoph Kwintkiewicz

Senior Expert

Power, Heat, Cooling and Water Systems
Bio-energy, CHP and ORC


since 2019

Freelance consultant E.Quadrat GmbH & Co. Energy Experts KG

since 2010

Director / shareholder, ANNIES Export NZ Ltd. (Australian Newzealand New Innovative Energy Solutions)


Technical Director, Invest Energy Sdn. Bhd., Selangor, Malaysia


Director / shareholder, Key Energy Ltd., Tauranga, New Zealand


Consultant, PE projects energy GmbH, manager branch office Baden-Württemberg


Energy consultant IHK Certificate, Chamber of Commerce and Industry Munich, Germany


Director, KKR GmbH, Germany


BcS Material Sciences, FAU University of Erlangen-Nürnberg

E-Mail: christoph.kwintkiewicz@equadrat-gmbh.eu