The 38^th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems  – ECOS 2025 – will be held, from the 29^th of June to the 4^th of July 2025, in Paris – France, the country of Carnot father of the thermodynamics. This edition is celebrating the 200^th year of Carnot’s book publication.

In 1824 Sadi CARNOT published, in Paris, his only book considered as a foundation of the Thermodynamics:

Réflexions sur la puissance motrice du feu et sur les machines à développer cette puissance