LEMTA is proud to organize the 34th French Thermal Engineering Conference, which will be held in Nancy from June 2 to 5, 2026, on the theme: Thermal Engineering & Decarbonization of Industry. The aim of this annual congress of the French Thermal Engineering Society is to inform the thermal engineering community about the challenges posed by the decarbonization of industry, with less than a quarter of a century to go before the 2050 carbon neutrality target. We invite all researchers, industrialists, and doctoral students to come and share their recent work in any field of thermal engineering and its applications. All work will be presented in poster form during dedicated sessions and may give rise to a written communication (with DOI). Thematic workshops will also be scheduled alternately with plenary conferences.