Greenmac upgrades biogas to natural gas quality. The upgraded biogas, also known as green gas or biomethane, is a sustainable form of renewable energy and can be supplied to the natural-gas grid or used as transport fuel. Our company is specialised in the design, turnkey supply and maintenance of biogas upgrading systems for 30 years.

We have broad international experience and you’ll find in us a cooperative partner in projects. We can offer you:

  • Membrane separation
  • LP Cooab® absorption
  • Capacities up from 50 to 5,000 Nm3/h
  • 24/7 Service


Why work with Greenmac?

  • Broad international experience
  • Twenty five years of exploitation in The Netherlands
  • Focused service and maintenance
  • Design and supply turnkey systems: High efficiency, low emissions, re-use of carbon dioxide possible, used as vehicle fuel or injected into the gas grid
  • The technologies are already being used in systems with capacities of between 50 and 3,500 Nm3/h
  • H2S removal with activated carbon: Drying of biogas, Cooldrying, Deepcooling, Adsorption (PSA or TSA)
  • CO2 removal: LP Cooab amine absorption, membrane technology
  • Compression of (bio) gas to the required delivery pressure
  • Gasanalysis
  • Gas quality control by adding propane or nitrogen
  • Odorisation
  • Heat recovery

    What is biogas upgrading?

    Biogas from anaerobic treatment of wastewater sludge, organic solids and manure is a valuable sustainable energy source reducing global warming from fossil fuels. As the demand for alternative renewable energy sources is rapidly increasing, biogas will play an important part. Upgraded biogas, also known as green gas, biomethane or PNG, replaces normal fossil gas and can be injected in the gas grid or used as vehicle fuel and eventually for electricity and heat production.
    Contact Greenmacfor more information!


  • Biogas Engineering and Consulting
  • Equipment suppliers

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