Biomethane technology that’s driving the clean energy transition
Biomethane engineering expertise
With more than 10 years in the energy sector, and as part of the CycleØ group, we have the engineering expertise to build leading solutions for the entire biogas production chain.
We design, build, test, and install skid-mounted biomethane upgrading and liquefaction technology. Our modular units are simple to install in remote sites, allowing us to access distributed feedstock sources.
Because each biomethane project is unique, our processes and technology can adapt to the client’s needs to achieve best-in-class efficiency.
What is biomethane?
Also known as green gas or renewable natural gas (RNG), biomethane is mainly composed of methane, making it a great alternative to fossil natural gas. Methane, when released into the air, becomes a potent greenhouse gas, with up to 80 times the warming effect of CO2.
We produce biomethane by capturing methane emissions from organic sources (such as waste from food and agriculture) to generate biogas, a gas that contains mostly methane and CO2. Biogas is then purified through a process known as upgrading.
Greater energy efficiency than biogas
While biogas is a valuable source of carbon-neutral energy, its impurities and low methane content (between 45 to 75% by volume) decrease its energy efficiency. Besides, biogas can only be used near where it’s produced, making it generally unsuitable for broader applications.
Instead, biogas can be upgraded to produce biomethane, which can be used directly to replace fossil natural gas. Our biomethane has >99% methane content, making it more efficient and versatile than biogas.
Decarbonising the gas grid
Biomethane can be injected directly into the gas grid to replace fossil natural gas. This makes it ideal for a seamless shift to net-zero energy.
Carbon-neutral transport
Biomethane is one of the best solutions for decarbonising heavy-duty vehicle fleets and marine transport vessels, which are sectors that are hard to electrify.
Bespoke solutions for the entire biomethane value chain
At our manufacturing facilities located in the Spanish Basque country, we design, manufacture and test our market-leading modular, skid-mounted biogas upgrading and biomethane liquefaction units.
Proprietary biogas upgrading technology
Our modular, membrane-based upgrading technology employs a three-stage process that separates CO2 from methane to produce biomethane with more than 99% methane purity. We provide flexible upgrading solutions that achieve maximum efficiencies.
Plug-and-play biomethane liquefaction
Our modular, small to medium-scale liquefaction units can be easily transported and installed in remote locations. Our technology employs a closed loop refrigeration system that self-generates nitrogen, which means no external fluids are required for liquefaction, simplifying the plant´s operation.
Experts in integrated biogas management
Innovation is in our DNA. At FNX, we have developed leading upgrading and liquefaction technology from scratch. We continue to improve on our technology and create new processes to deliver market-leading solutions, all at a competitive cost. Beyond manufacturing, we have the know-how to provide integrated management for biomethane projects.
Get in touch to learn more
Agri-food producers
Biomethane is a sustainable waste management solution that reduces costs and brings benefits to farmers and rural communities. Contact us to see how we can work together.
Technical Partners
Whether you want to know more about our technology, be supplied with green gas or benefit from green certificates, we have a solution for you.
CycleØ Projects
We’re part of the CycleØ Group, a leading biomethane platform that develops, builds, owns and operates green gas projects that deliver biomethane for vehicular (Bio-G2V) and grid injection (Bio-G2G) applications. We provide the engineering expertise and the upgrading and liquefaction technology to bring these projects to life.
Farm La Carbona, Spain
The first biomethane plant to integrate ammonia stripping in Spain has a bioCNG maximum production capacity of 15,000 MWh per year, using primarily cow manure as feedstock.
Lleida, Spain
Located at less than 5 kilometres from Farm La Carbona, where another CycleØ project is located, this farm will produce 10 GWh of biomethane per year, using primarily cow manure as feedstock.
Vilanant, Spain
The Vilanant plant is the first Bio-G2V-CNG project in Spain. Currently operational, this 0.5 Mwh plant uses cow manure as feedstock to produce biomethane for vehicular applications.
Faenza, Italy
One of the largest 100% vehicular biomethane plants in Europe, the Faenza plant will produce an estimated 9 million kilograms of Bio-CNG (equivalent to 140 Gwh) for vehicle fuel.
Farm La Carbona, Spain
The first biomethane plant to integrate ammonia stripping in Spain has a bioCNG maximum production capacity of 15,000 MWh per year, using primarily cow manure as feedstock.
Lleida, Spain
Located at less than 5 kilometres from Farm La Carbona, where another CycleØ project is located, this farm will produce 10 GWh of biomethane per year, using primarily cow manure as feedstock.
Vilanant, Spain
The Vilanant plant is the first Bio-G2V-CNG project in Spain. Currently operational, this 0.5 Mwh plant uses cow manure as feedstock to produce biomethane for vehicular applications.
Faenza, Italy
One of the largest 100% vehicular biomethane plants in Europe, the Faenza plant will produce an estimated 9 million kilograms of Bio-CNG (equivalent to 140 Gwh) for vehicle fuel.
