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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

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.-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

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)
Stephan Löffler

Senior Expert Plant Operations

Stephan Löffler has been involved in hydropower plants since 1999. His experience ranges from conception, planning, approval procedures to construction and the long-term operation of hydroelectric power plants. Overall, he looks back on more than 30 years of professional activity in the areas of mechanical and plant engineering, large pipeline construction and maintenance as well as drinking water and wastewater plant construction.


Since 2014

Managing Director, enPlan energietechnische Anlagen GmbH

2008 - 2014

Employee of AEE Aktiengesellschaft für Erneuerbare Energien

1999 - 2008

Project Engineer Hydropower, enPlan energietechnische Anlagen Gmbh


Dipl.-Ing. (FH), Leipzig University of Applied Science, Germany

1995 – 1999

Order acquisition and Project handling in drinking water and waste water plant construction, Pumpen-Wolf, Bad Salzungen, Leipzig office

1993 – 1994

Technical Employee Sales, Zehnder GmbH, Pumpen und Anlagenbau, Frankfurt am Main, branch Leipzig

1991 – 1992

Technical Employee, Agrotechnic Bau und Logistic-Service GmbH, Leipzig


Mechanical Engineer, Engineering School "Rudolf Diesel", Meißen

1987 - 1988

Maintenance of construction machinery with mobile workshop trolley

1980 – 1985

Maintenance Technician in large pipeline construction

1978 - 1980

Apprenticeship Maintenance Mechanic

E-Mail: stephan.loeffler@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