DualMetha

About DualMetha

DualMetha operates within the renewable energy sector, focusing on the production of biomethane through an advanced anaerobic digestion process. The company develops, builds, and operates methanization units that convert organic waste into green energy, primarily for injection into the gas grid or for use as vehicle fuel. Its business model encompasses the entire value chain, from project development and investment to the construction and operation of its methanization sites.

The company's history began in 2017 with the start of its research and development program on hybrid methanization. This period of lab development and model creation, led by co-founder Yann Mercier, culminated in the filing of its first patents. A significant milestone was the construction of the Prémery pilot site in 2019, which became operational in 2021, validating the technology and leading to the construction of a second site. By 2023, the process at the pilot site was stabilized. The firm has attracted strategic investment from major energy infrastructure operators Enagás and Teréga, who each acquired a 20% stake to support the startup's development.

DualMetha's patented technology distinguishes itself by combining continuous liquid digestion with discontinuous solid digestion. This hybrid approach is designed to process a wide variety of feedstocks, including difficult, dry, and fibrous materials like manure and straw, without requiring intensive pre-treatment. The system involves loading solid biomass into peripheral tanks where it undergoes percolation, being showered with digestate from a central pre-digester to initiate anaerobic degradation. The enriched liquid then moves to a continuous, mixed-flow digester for further processing. This dual process allows the system to handle inputs containing foreign materials like plastics or stones and results in more stable biomethane production, reduced maintenance, and 35% less energy consumption compared to conventional methods. The final biomethane is injected into the gas network, and the solid digestate is recovered for agricultural use.