La Française de l'Energie S.A. is a French independent multi-energy producer dedicated to achieving Net Zero emissions through local, low-carbon energy solutions. Specializing in the capture and valorization of mine gas from former mining basins in Hauts-de-France, Lorraine, Wallonia (Belgium), and other regions, the company transforms methane into strategic, clean gas, green electricity, and heat via short-circuit production models. It operates six sites, including five power-generation facilities with 12 MW installed cogeneration capacity and one gas grid injection site, while expanding into solar-thermal projects like France's largest such park in Creutzwald and photovoltaic developments on industrial brownfields. Revenue streams include electricity sales (around 70%), gas (25%), heat (1-2%), and emerging activities in biogas purification, liquefaction into Bio-GNL, Bio-CO2, and green hydrogen production. With subsidiaries like Gazonor and Cellcius, and ISO 9001 certification, La Française de l'Energie plays a key role in industrial ecology, reducing CO2 emissions—targeting one million tonnes avoided annually—and supporting Europe's ecological transition by replacing imported energy with territorial resources.