IRES2015 468x60

In 2015 the International Renewable Energy Storage Conference (IRES) took place for the first time in cooperation with Messe Düsseldorf and OTTI e.V.

Because of the enormous successes of past IRES conferences EUROSOLAR and the World Council for Renewable Energy (WCRE) continued the IRES series in 2015. The series of IRES conferences has emerged as the leading forum for the discussion of the pressing problems with renewable energy storage by drawing together one of the largest gatherings of scientific and economic experts worldwide.

As of 2015 the participants chose from even more extensive options. Running in Düsseldorf for the first time, IRES 2015 was being held as a concurrent event with ENERGY STORAGE EUROPE (Conference & Expo) and the 4th Conference Power-to-Gas Conference (OTTI e.V.). A related trade show will feature ~100 exhibitors.

The three conferences and the exhibition took place March 9-11, 2015 in the Congress Center Düsseldorf of Messe Düsseldorf (Trade Fair Dusseldorf), Germany. Combining their events, the organizers established the most important Energy Storage meeting worldwide.

Conference Program

PDF icon List of all oral presentations
PDF icon List of all poster presentations


Conference Proceedings

Published by EUROSOLAR and the World Council for Renewable Energy (WCRE), Released April 2015, CD-ROM: Conference Presentations and Materials of the "9th International Renewable Energy Storage Conference" (IRES 2015), Düsseldorf/Germany, 9-11 March 2015 in English

2015 marked the ninth year of IRES, the successful International Renewable Energy Storage Conference, continued by EUROSOLAR and the WCRE. Industry experts acknowledge IRES as having become the central platform for sharing knowledge and exchanging ideas on a key issue of future energy supply. The IRES is the international forum at which leaders from the energy industry, business, science, associations, politics and the financial industry assemble to access and discuss fresh insights into the state of the art in energy storage, the need for storage capacity and examples of success.


  • Speakers presentations and materials of the IRES 2015
  • Poster exhibition: posters and papers of the IRES 2015


Download Area

All documents evolving around the 9th International Renewable Energy Storage Conference (IRES 2015)  - including all forms for exhibitors and presenters, information about the travel to Düsseldorf and the latest press news - can be found here.

Conference Venue

PDF iconConference Rooms

Conference Proceedings

PDF iconConfirmation Form_Oral Presentation
PDF icon
Confirmation Form_Poster Exhibition
PDF icon
Final Paper_Formalities
PDF icon
Equipment and Conference Proceedings Form_Oral Presentation
PDF icon
Equipment and Conference Proceedings Form_Poster Exhibition

Call for Papers

PDF iconCall for Abstracts

Our Partners

In cooperation with:

EnergieAgentur Logo neu groß


09-11 March 2015

Otti.png 4th Conference Power-to-Gas
11 March 2015

Media Partners:

Solarthermalworld.jpg   IRES2015 Medienpartner Energynet klein  IRES2015 Medienpartner FVEE Logo groß
 IRES2015 Medienpartner DERlab LOGO klein  DERlab call for papers  IRES2015_Medienpartner_EUROBAT.jpg
 IRES2015 Medienpartner HZwei Logo klein  IRES2015 Medienpartner Enerope Logo RGB  IRES2015 Medienpartner Going Public
 IRES2015 Medienpartner Solarserver eng IRES2015 Medienpartner Sonne Wind und Energie IRES2015 Medienpartner Navigant
 Energiewirtschaftliche Tagesfragen    



You want to know more about IRES?
Contact person: Lina Hedwig (project manager for IRES)
IRES2015[AT] |


EUROSOLAR, Messe Düsseldorf and OTTI partner up for biggest storage event yet

The three conferences, IRES (the International Renewable Energy Storage Conference and Exhibition), Energy Storage (the International Conference and Exhibition for the Storage of Renewable Energies) and the 4th Conference Power-to-Gas, which are the most important annual events in the field of energy storage, have combined in 2015 to host the co-located events in Düsseldorf.

Day one of the conference is being jointly organized and will be offering an excellent overview of all relevant topics. Days two and three are being separately organized by either partner. The IRES continues to be the conference where the newest scientific and technological advances will be presented and discussed.

EUROSOLAR, Messe Düsseldorf and OTTI e.V- announced the new partnership at the end of the ENERGY STORAGE EUROPE (conference & expo) in Düsseldorf on March 27, 2014. The partners, thereby, offer attendees even greater diversity of information, spanning the newest scientific and technological advances and application-focused Business Cases.

EUROSOLAR wants to extend a sincere thank you to all of you who have been involved in the process.

We will be delighted to welcome you to Düsseldorf for the 9th IRES, March 9-11, 2015!


Scientific Steering Committee

Each year, the scientific steering committee forms the conference program based on the international call for abstracts. With the gathered expertise from European universities and companies, the IRES conference guarantees a top-nodge conference program with innovative presentations and a cutting-edge poster presentation.

Dirk Uwe SauerProf. Dr. Dirk Uwe Sauer
RWTH Aachen University, Germany (Scientific Conference Chair)

Dr. Dirk-Uwe Sauer is Professor of "Electrochemical Energy Conversion and Storage Systems" in the Faculty for Electrical Engineering and Information Technology at RWTH Aachen University. Prior to his professorship, he was head of the storage systems group and of off-grip and rural electrification at the Fraunhofer Institute for Solar Energy Systems ISE in Freiburg, Germany. He holds a Ph.D. from the University of Ulm on the topic of Optimization of the usage of lead-acid batteries in photovoltaic hybrid systems, with special emphasis on battery ageing. His main research topics are electrochemical energy storage (batteries) and autonomous power supply systems.

pdroegeProf. Peter Droege
President EUROSOLAR, University of Liechtenstein, Vaduz, Liechtenstein

Peter Droege is General Chairman of the World Council for Renewable Energy; President of An internationally renowned expert on advanced urban design, planning, Professor Droege holds the first Chair for Sustainable Spatial Development at the University of Liechtenstein, and a Conjoint Professorship at the University of Newcastle's School of Architecture and Built Environment. A prolific writer and editor, he has produced the seminal scholarly volumes "Intelligent Environments" and "Urban Energy Transition" (both Elsevier, and 100 Percent Renewable - Energy Autonomy in Action' (Routledge)'. The author of The Renewable City: A Comprehensive Guide to an Urban Revolution Wiley), he is also co-editor of Climate Design (ORO).

Luisa CabezaProf. Dr. Luisa Cabeza
University of Lleida, Lleida, Spain

Luisa F. Cabeza is professor at the University of Lleida, where she leads one of the biggest research group on thermal energy storage in the world, GREA (, since 1999. She has a degree in Chemical Engineering (1992) and in Industrial Engineering (1993), a Master’s Degree in Industrial Management (1995) and a PhD in Industrial Engineering (1996). She spent two years as a researcher at the U.S. Department of Agriculture Eastern Regional Research Center (USDA-ERRC) in Philadelphia. In 1999 she joined the University of Lleida (UdL) where she set up GREA (Agro-Environmental Engineering Research Group), one of the biggest research group on thermal energy storage in the world. She has published more than a hundred articles in scientific reviews, as well as several chapters for books. She is an active participant in such international forums as IEA (International Energy Agency), IPCC (Intergovernmental Panel on Climate Change), RHC (Renewable Heating & Cooling) and the European Technology Platform.

Jose EtcheverryDr. José Etcheverry
York University, Toronto, Canada

Jose Etcheverry is a professor in the Faculty of Environmental Studies of York University. Dr. Etcheverry’s research is centred on climate change mitigation and renewable energy policies with a focus on practical policy solutions, collaborative approaches and effective communication strategies.
Dr. Etcheverry is Co-Chair of the Sustainable Energy Initiative (SEI of York University. The SEI is a research and training organization that involves the Faculty of Environmental Studies, the Toronto Region and Conservation Authority and international organizations such as Aalborg University, the Universidad de Taracapá, and the Nordic Folkecenter for Renewable Energy.The SEI was established to develop innovativepedagogical, research, and knowledge mobilizationopportunitiesto advance integrated and comprehensive renewable energy solutions in Canada and around the world.
Dr. Etcheverry is a founding member of the International Renewable Energy Agency's Learning Partnership ( and the RETScreen International Training Institute. He is the current President of the Canadian Renewable Energy Association, a member of the Committee of Chairpersons of the World Council for Renewable Energy (, a member of the experts roster of the Go 100% Renewable Energy and member of the Innovation Network of the Japan Renewable Energy Foundation.

Andreas HauerDr. Andreas Hauer
ZAE Bayern, Garching, Germany

Dr. Andreas Hauer studied Physics at the Ludwig-Maximilians-University in Munich, Germany. He made his PhD at the technical University in Berlin. Now is Head of the Department “Technology for Energy Systems and Renewable Energy” at the Bavarian Center for Applied Energy Research, ZAE Bayern. There he is responsible for a number of national and international research projects focussed on thermal energy storage, thermal driven heat pumps / chillers for industrial and building applications. Dr. Hauer is an international known expert on thermal energy storage. For 7 years he was the secretary of the Executive Committee of the Energy Storage Programme within the International Energy Agency IEA. At the moment he is leading a working group on material development for thermal energy storage within the technology network of the IEA. On the national level he is member of the board of directors of the 2012 established Bundesverband Energiespeicher (BVES), German Energy Storage Association.

Brian Vad MathiesenProf. Dr. Brian Vad Mathiesen
Aalborg University, Aalborg, Denmark

Brian Vad Mathiesen is Professor, Programme Director for MSc in Sustainable Cities and Deputy head of the Strategic Research Centre for 4th Generation District Heating Technologies and Systems at Aalborg University. His main research interest is concentrated on Smart Energy Systems and analyses of going towards 100% renewable energy systems. It covers technical energy system analyses of large-scale integration of fluctuating renewable energy sources, feasibility studies and public regulation and technological change in an international, national, regional and city scale. Prof. Dr. Mathiesen is affiliated to the Sustainable Energy Planning Research Group at the Dept. of Development and Planning. He has recently been responsible for the analyses in the CEESA project and involved in the Heat Road Map Europe Studies.

Marco MerloDr. Marco Merlo
Politecnico di Milano, Milan, Italy

Dr. Marco Merlo works as assistant professor in the Department of Energy, Electric Power Systems, in Politecnico di Milano – Italy. His research is testified by more than 100 papers and publications (including volume chapters for international editors, publications on national and international journals, on national and international conferences), dealing with security, regulation and control issues of power systems.

The research activity of Marco Merlo has evolved along three main conceptual axes:

  • Planning and operation of electric transmission systems: voltage security, network congestions, quality and reliability of supply.
  • Dispersed Generators (DG), energy efficiency, Smart Grid: impact of DG on the existing distribution infrastructures (hosting capacity). The research effort on the electric distribution networks led to the participation in a dedicated laboratory of the Politecnico di Milano: SmartDGlab.
  • Final users management: identify viable solutions to effectively integrate the (low voltage) final user into the electric market, i.e. to implement Demand Side Management procedure for the domestic users.


Halime PaksoyProf. Dr. Halime Paksoy
Çukurova Universiy, Adana, Turkey

Dr. Paksoy is currently a professor in the Chemistry Department, and also the Director of the Center for Environmental Research at Çukurova University, Adana, Turkey.  She is a chemical engineer who has been concentrating on thermal energy storage technologies since 1992. She serves as the Turkish Delegate and current Chair of the Executive Committee of the Energy Conservation through Energy Storage Implementing Agreement (IEA ECES IA – Representing Turkey, Dr. Paksoy has signed the Implementing Agreement with the International Energy Agency on behalf of Çukurova University in 1995. Halime Paksoy leads the thermal energy storage team at Cukurova University currently with one masters and six PhD students. Their main research is on fundamental and applied energy storage studies, as well as on developing thermal energy storage materials and their applications in buildings and industry. She is associate editor responsible for energy storage in the International Journal of Solar Energy Society.

Dr. Marion Perrin
Atomic Energy and Alternative Energies Commission INES, Le Bourget-du-Lac, France

Dr. Marion Perrin is a Senior researcher in electrical storage, with 15 years experience in particular in renewable energies storage applications. Following 4 years with ZSW in Germany she gets a PhD from the university of Nancy, France, related to the Improvement of lead acid batteries via mechanical compression. She enters CEA, the French nuclear authority, in 2002 where she starts building up and leading European programmes dealing in particular with storage for stand alone PV systems, moving rapidly towards grid connected systems with the development of distributed generation. After a 2 years adventure with the Conergy, acting as an electrical storage expert in the department for power electronics, she is now leading a 40 people business unit at CEA, dealing with the intelligence for storage technology management in order to size, select technology and optimise cost of ownership of storage in stand alone, electric vehicle and grid connected applications.

Bernhard RiegelDr. Bernhard Riegel
Hoppecke Batterien GmbH, Brilon, Germany

After Dr. Bernhard Riegel was awarded his doctor degree in 1994 by the University of Stuttgart he worked as a scientific assistant at Max Planck Institute for Solid State Research. Thereafter, he started a two year postgraduate time at the University of Texas. In 1998 he started to work with electrochemical energy storage at the Center for Solar Energy and Hydrogen Research (ZSW) in Ulm, with main focus on lead-acid and nickel metal hydride technology. Since 2001 he has worked in the research and development department of Hoppecke Batterien GmbH. In 2003, he took over the management of R&D. With the establishment of the Hoppecke Advanced Battery Technology GmbH, Dr. Riegel took over the R&D activities for the Hoppecke group, this involves the electrochemical storage technologies, lead-acid, alkaline batteries, lithium ions as well as the electronic and energy storage system development in Brilon, Zwickau and Shanghai.

Peter SchossigDr. Peter Schossig
Fraunhofer ISE, Freiburg, Germany

Dr. Peter Schossig is head of department “Thermally Active Materials and Solar Cooling”  at the Fraunhofer-Institut für Solare Energiesysteme ISE, Freiburg, Germany since 2011. The focus of his scientific work lays on phase change materials (PCM) and their use for hot and cold storage, energy efficiency and solar cooling.
After his Physics studies (diploma in 1998) at the University of Freiburg, Germany he started his PhD thesis at the University of Karlsruhe (TH), Karlsruhe, Germany with the title “Micro-encapsulated phase change materials in wall composite systems” (doctoral examination in 2005). Between 2007 and 2011 Peter Schossig was operating agent of the International Energy Agency (IEA) Heat pump program HPP Annex 34 “Thermally driven heat pumps for heating and cooling”.
In 2009, Dr.-Ing. Peter Schossig was nominated and certificated for the “German Future Prize” 2009 with the project “Small spheres against climate change-energy efficiency and comfort thanks to intelligent building materials” which was a teamwork of the Fraunhofer-Institut für Solare Energiesysteme ISE, Freiburg, Germany and BASF SE, Ludwigshafen, Germany.

Tom SmolinkaDr. Tom Smolinka
Fraunhofer ISE, Freiburg, Germany

Dr. Tom Smolinka has studied energy and process engineering at the Technical University of Berlin / Germany with focus on energy conversion and heat transfer. He has worked at Fraunhofer ISE for more than 12 years in the business area hydrogen technology. Starting with electrochemical characterisation of electrodes in PEM fuel cells poisoned by CO and CO2 and fuel cell stack development he received his PhD degree in 2005. In the last years he built up the department “Chemical Energy Storage” at the Fraunhofer institute. Currently he works in the fields of PEM water electrolysis, solar hydrogen production, power to gas and redox flow batteries and is co-author of several studies on electrical energy storage.

IngoStadlerProf. Dr. Ingo Stadler
Cologne University of Applied Sciences, Cologne, Germany

Professor Ingo Stadler is a researcher and teacher at the Fachhochschule Köln (Cologne University of Applied Sciences). He is managing director of the Institute of Electrical Power Engineering, Faculty of Information, Media and Electrical Engineering, as well as of CIRE, the Cologne Institute for Renewable Energy, where he is responsible for renewable energy and energy economics. Ingo Stadler studied electrical engineering at the University of Karlsruhe. He earned a Ph.D. and was promoted to be a professor at the University of Kassel and ran a business in building systems. He accepted a professorship at the Westsächsische Hochschule Zwickau (University of Applied Sciences Zwickau). Since 2006 he has been teaching in Cologne.
The focus of his research is the integration of renewable energy and energy systems with a high proportion of renewable energy into the electric grid. His main focus is non electrical storage beyond electrical energy supply systems and demand side management. Prof. Stadler is a member of the Scientific Steering committee of the International Renewable Storage Conference (IRES) and of the International Centre for Sustainable Development of Energy, Water and Environment Systems (SDEWES). For over a decade he has worked on the program for photovoltaic power systems of the International Energy Agency (IEA). With his co-author Michael Sterner he wrote „Energiespeicher – Bedarf, Technologien, Integration“, an education book to be published by Springerverlag.

Michael SternerProf. Dr. Michael Sterner
Regensburg University of Applied Sciences, Germany

Prof. Dr.-Ing. Michael Sterner works as professor for energy storage and renewable energy systems at the Technical University of Applied Sciences in Regensburg, Bavaria in Germany. He is teaching renewable energy, energy economics, solar energy, renewable energy integration and energy storage at the Faculty of Electrical Engineering and the Technical University of Erlangen-Nuremberg. Before he was head of energy systems and energy economy at the Fraunhofer-Institute for Wind Energy and Energy System Technology, were he invented a new storage technology together with colleagues: Power-to-Gas - and implemented it in energy modeling since 2009. Meanwhile, various industry companies like E-ON and Audi have adopted the concept and built demo plants in MW scale.

He works for the German Electrotechnical Society (VDE), is a co-autor for the Special Report on Renewable Energy (SRREN) in IPCC and consulting the German government on the “Energiewende” – the transformation of energy systems.