ECOS Conferences

The 2025 ECOS annual conference will be held in Paris, France. More to come.

Future confirmed ECOS annual conferences:

A Brief History of the ECOS Conferences

ECOS is the name of a series of international conferences started in 1985, that focused on modern aspects of thermal sciences with particular emphasis on Thermodynamics and its applications in energy conversion systems and processes. While thermodynamics is still an important ECOS driving topic, ECOS has taken on a much broader look at energy and its sustainability, based on its pillars of environment, economics, and society.

ECOS is the acronym for Efficiency, Cost, Optimization and Simulation of energy conversion systems and processes, keywords that best describe the contents of the presentations and discussions taking place in these conferences. The name ECOS ("home" in Greek), was coined for it in 1992 to make a point that our conferences are home for a fruitful and friendly exchange of ideas, and that we need to protect the earth as our home. The ECOS INTERNATIONAL SOCIETY was incorporated in August 2021. 

The complete list of all the international conferences held to date, including the names of the chairpersons and co-chairpersons, is as follows:

Past conferences

(Under construction)

ECOS 2023 

36th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems

June 25 - 30, Las Palmas de Gran Canaria, Spain

Organizing Committee: Ana María Blanco-Marigorta, Noemi Melián Martel, Beatriz Del Río Gamero

Honorary Chairmen: Richard Gaggioli, Ozer Arnas

ECOS 2022 

35th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems

July 3-7, Copenhagen, Denmark

Organizing Committee: Brian Elmegaard, Jonas Kjær Jensen, Wiebke Brix Markussen

ECOS 2021 

34th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems

June 28-July 2, 2021, Taormina, Italy

Organizing Committee: Enrico Sciubba, Yoshiharu Amano, Brian Elmegaard

ECOS 2020 

3nd International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems

June 29 - July 3, Osaka, Japan

Organizing Committee: Ryohei Yokoyama and Yoshiharu Amano

Honorary Chairmen: Noam Lior, Koichi Ito

ECOS 2019 

32nd International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems

June 23-27: Wroclaw, Poland

Organizing Committee: Wojciech Stanek, Zbigniew Gnutek, Slawomir Pietrowicz

Honorary Chairmen: Andrzej Ziebik, Zygmunt Kolenda

ECOS 2018 

31st International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems

June 17-21, Guimarães, Portugal

Organizing Committee: José Carlos Teixeira, Senhorinha Teixeira

Honorary Chairmen: Daniel Favrat, Silvia Nebra

ECOS 2017

30th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems

July 2-6, San Diego, California, USA

Organizing Committee: Asfaw Beyene, David MacPhee, Abel Hernandez-Guerrero

Special Issues:

Energy

ECOS 2016 

29th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems

June 19-23, Portorož, Slovenia

Organizing Committee: Alojz Poredoš, Tatiana Morosuk, Andrej Kitanovski

Honorary Chairmen: George Tsatsaronis, Noam Lior

Special issues:

Energies

ECOS 2015

28th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems

June 29 - July 3, Pau, France

Organizing Committee: Jean-Pierre Bédécarrats, Michel Feidt, Pascal Stouffs, George Tsatsaronis, Antonio Valero

Honorary Chairman: Özer Arnas 

ECOS 2014 

27th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems

June 15-19, Turku, Finland

Organizing Committee: Ron Zevenhoven, Henrik Saxén, Frank Pettersson, Özer Arnas

ECOS 2013 

26th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems

July 15-19, Guilin, China

Organizing Committee: Na Zhang, Wei Han, Hongying Ke, Jun Sui, Yongping Wang, Yingru Zhao

ECOS 2012 

25th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems

June 26-29, Perugia, Italy

Organizing Committee: Umberto Desideri, Giampaolo Manfrida, Enrico Sciubba

ECOS 2011

The 24th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems

July 4-7, Novi Sad, Serbia

Organizing Committee: Gordana Stefanović, Milorad Bojic, Noam Lior, Jovan Petrović, Vladimir Stevanović

ECOS 2010 

23rd International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems

June 14-17, Lausanne, Switzerland

Organizing Committee: Daniel Favrat, François Maréchal

 ECOS 2009

22nd International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems

August 30 - September 3, Foz do Iguaçu, Paraná, Brazil

Organizing Committee: Silvia Azucena Nebra, Silvio de Oliveira Júnior, Edson Bazzo, Arnaldo da Silva Walter 

ECOS 2008

21st International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems

June 24-28, Krakow-Gliwice, Poland

Organizing Committee: Andrzej Ziebik, Zygmunt Kolenda, Wojciech Stanek

ECOS 2007 

20th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems

June 25-28, Padova, Italy

Organizing Committee: Mirandola, Ö. Arnas

ECOS 2006

19th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems

July 12-14, Aghia Pelagia, Greece  

Organizing Committee: C.A. Frangopoulos, C. Rakopoulos, G. Tsatsaronis

Honorary Chairmen: E.P. Gyftopoulos, G. Hatsopoulos

ECOS 2005

18th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems

June 20-22, Trondheim, Norway

Executive Council: J.E. Hustad

Organizing Committee: S. Kjelstrup

ECOS 2004 

17th International Conference on Efficiency, Costs, Optimization, Simulation and Environmental Impact of Energy and Process Systems

July 7-9, Guanajuato, Mexico

Organizing Committee: R. Rivero

Executive ommittee: G. Tsatsaronis, M.J. Moran

 ECOS 2003

16th International Conference on Efficiency, Costs, Optimization, Simulation and Environmental Impact of Energy Systems

June 30 - July 2, Copenhagen, Denmark

Organizing Committee: B. Qvale

Executive Committee: N. Houbak, M.J. Moran

ECOS 2002

15th International Conference on Efficiency, Costs, Optimization, Simulation and Environmental Impact of Energy Systems

July 3-5, Berlin, Germany

Organizing Committee: G. Tsatsaronis, M.J. Moran

Honorary Chairman: K.F. Knoche

ECOS 2001 

Efficiency, Costs, Optimization, Simulation and Environmental Impact of Energy Systems

July 4-6, Istanbul, Turkey

Organizing Committee: Öztürk, A. Bejan, M. Feidt, Y.A. Gögü

Honorary Chairman: E.P. Gyftopoulos

ECOS 2000

International Conference on Efficiency, Costs, Optimization, Simulation and Environmental Aspects of Energy and Process Systems

July 5-7, Enschede, The Netherlands

Organizing Committee: G.G. Hirs, G. Tsatsaronis, M.J. Moran

Honorary Chairman: J. Szargut

ECOS 1999

Efficiency, Costs, Optimization, Simulation and Environmental Aspects of Energy Systems

June 8-10, Tokyo, Japan

Organizing Committee: M. Ishida, G. Tsatsaronis, M.J. Moran, H. Kataoka

ECOS 1998 

Efficiency, Costs, Optimization, Simulation and Environmental Aspects of Energy Systems and Processes

July 8-10, Nancy, France

Organizing Committee: M. Feidt, A. Bejan, M.J. Moran, G. Tsatsaronis

Honorary Chairmen: E.P. Gyftopoulos, P. Le Goff

 TAIES 1997

Thermodynamic Analysis and Improvement of Energy Systems

June 10-13, Beijing, China  

Organizing Committee: Jingyi Chen, E. Sciubba

Executive Committee: Ruixian Cai, M.J.Moran, G. Tsatsaronis

ECOS 1996

International Symposium on Efficiency, Costs, Optimization, Simulation and Environmental Aspects of Energy Systems

June 25-27, Stockholm, Sweden

Organizing Committee: G. Svedberg, G. Manfrida, M.J.Moran, G. Tsatsaronis

ECOS 1995 

International Conference on Efficiency, Costs, Optimization, Simulation and Environmental Impact of Energy Systems

July 11-14, Istanbul, Turkey

Organizing Committee: Y.A. Gögü, A. Öztürk, G. Tsatsaronis

FLOWERS 1994

Florence World Energy Research Symposium

July 6-8, Florence, Italy

Organizing Committee: E. Carnevale, G. Manfrida, F. Martelli

ENSEC 1993

Energy Systems and Ecology

July 5-9, Krakow, Poland 

Organizing Committee: J. Szargut, G. Tsatsaronis, Z. Kolenda, A. Ziebik

ECOS 1992 

International Symposium on Efficiency, Costs, Optimization and Simulation of Energy Systems

June 15-18, Zaragoza, Spain

Organizing Committee: A. Valero, G. Tsatsaronis 

 ATHENS 1991

Analysis of Thermal and Energy Systems

June 3-6, Athens, Greece  

Organizing Committee: G. Tsatsaronis, C.D. Rakopoulos

Executive Committee: D.A. Kouremenos, R.A. Gaggioli, M.J. Moran

FLOWERS 1990

Florence World Energy Research Symposium

May 28 - June 1, Florence, Italy

Organizing Committee: S.S. Stecco, M.J. Moran

TAIES 1989

Thermodynamic Analysis and Improvement of Energy Systems 

June 5-8, Beijing, China

Organizing Committee: C.H. Wu, R.A. Gaggioli

Executive Committee: Ruixian Cai, M.J. Moran

IS2LATS 1988

4th International Symposium on 2nd Law Analysis of Thermal Systems

May 25-29, Rome, Italy

Organizing Committee: R. Melli, E. Sciubba

Executive Committee: R.A. Gaggioli, M.J. Moran, E.Sciubba