en.Wedoany.com Reported - SUBLIME Energie in France has launched the Charlie farm-based biogas liquefaction system in Plélo, Brittany. This system can directly convert biogas into liquid form on the farm, without needing connection to the natural gas network. The unit has been installed and commissioned at the Gazéa farm.
The Charlie system increases the energy density of biogas through liquefaction, enabling its transport via road to centralized facilities. There, the biogas is upgraded into bioLNG for heavy-duty transport and liquid bioCO₂, the latter of which can replace fossil-derived carbon dioxide. This model draws on the "hub-and-spoke" logistics approach, similar to milk collection systems, where liquefied gas is gathered from multiple farms and processed at a shared hub, helping smaller or remote farms participate in renewable gas production.
The Charlie unit has been installed at the Gazéa farm, an early adopter of anaerobic digestion in Brittany. It is expected to process sufficient biogas annually to produce approximately 180 tons of bioLNG and 330 tons of liquid bioCO₂. SUBLIME Energie states that this project integrates liquefaction and downstream separation technologies, marking the final phase of its R&D program.
SUBLIME Energie estimates that due to infrastructure limitations, France's biomethane potential could reach 26 TWh by 2050, but a significant portion remains untapped. The company's model involves purchasing raw biogas from farmers, providing an additional revenue stream. Farmers do not need to invest in upgrading equipment and can also participate in project ownership.
The technology also helps reduce emissions. Anaerobic digestion can lower methane emissions from livestock manure, and bioLNG can serve as a low-carbon alternative to diesel for sectors like heavy-duty transport and shipping. SUBLIME Energie is preparing for the next project phase, Delta, which aims to connect around 10 farms to a shared processing hub, expected to be operational by 2028, with plans for further expansion in France and Europe.
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