Biogas & Biofuel

Designing an anaerobic digestion plant requires expertise in biology, chemistry, mechanical engineering, and automation, and involves transforming organic matter into controllable energy.

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With project experience ranging from 5 to 200 MW, serving clients from startups to major established operators, we are the partner of choice for the deployment of renewable gas and fuels derived from biomass, sludge, and waste.

From conceptual design to detailed engineering, we implement the integration of methanation processes, hydrothermal gasification, pyrolysis, and syngas treatment.

We draw on an extensive network of expertise to manage the entire project scope within the site boundaries and support our clients in preparing and submitting applications for environmental and planning permits.

Our Activities and Achievements

  • R&D Partnership: technical and economic studies of the low-carbon gas value chain, evaluation of innovative technologies for reducing the carbon footprint (reforming, CO₂ capture, methanation, liquefaction, hydrothermal gasification), calculation and benchmarking of performance indicators,

  • Feasibility and Pre-FEED: analysis and recommendations for technology selection, development of preliminary studies and the project master plan, from site layout to regulatory procedures. Environmental assessment (GHG, emissions, etc.) and economic assessment (OPEX, CAPEX), analysis of associated risks, and identification of solutions and optimization pathways,

  • FEED, procurement, and supply: given the maturity of these processes, we have particularly advanced project references, extending to detailed studies and the supply of equipment and construction contracts in the field of hydrothermal gasification and the pyro-gasification value chain, including methanation, syngas treatment for injection, and CO₂ liquefaction.

Our services and deliverables

  • Comparative technology analysis / technical-economic studies,

  • Definition of ATEX zones, GHG emissions, and environmental impact,

  • Material and energy balance, plant sizing and layout,

  • Optimization of safety, maintenance, and reliability aspects,

  • OPEX/CAPEX cost analysis and risk management,

  • Assistance with permit applications.

Biomass and Biogas Solutions

  • Anaerobic Digestion

  • Hydrothermal Gasification

  • Pyro-gasification

  • Syngas processing

Our Strengths in Biogas/Biofuel

  • Several years of experience in innovation and R&D serving major energy companies,

  • Participation in numerous partnerships that have secured funding (European funds, ADEME, regional funds, etc.),

  • Active members of France Hydrogène, AT2E, GT GH, Neopolia, Bretagne Pôle Naval, Evolen, etc.

  • Support and consulting for entrepreneurs, startups, and new subsidiaries of major corporations regarding regulations and biogas and biofuel solutions.

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Group presence

The Snef Group operates across four continents—the Americas, Europe, Africa, and Oceania—in 30 countries and 80 cities, with a network spanning more than 100 international locations.