Haffner Energy

Haffner Energy is a French technology and engineering company specializing in the production of renewable hydrogen and decarbonized syngas from biomass residues. Its proprietary Hynoca process uses thermolysis and reforming to convert lignocellulosic feedstocks into hydrogen, with biochar as a co-product that enables carbon-negative footprints. The company designs, builds, and licenses modular plants for industrial decarbonization, mobility fuels, and the supply of intermediates for e-fuels and synthetic fuels.

Founded in 1993 and headquartered in Vitry-le-François, France, Haffner Energy operates across Europe and North America and is listed on Euronext Growth Paris. Its solutions target sectors seeking to replace fossil-based hydrogen and gas, valorize local biomass, and reduce lifecycle emissions through circular, waste-based feedstocks.