CycleØ inaugurates Spain’s first biomethane plant with ammonia stripping

Biomethane producer CycleØ has partnered with Spanish livestock farm Granja La Carbona to install the first biomethane facility in Spain that integrates ammonia stripping technology - transforming manure into sustainable fertiliser.
The process transforms ammoniacal nitrogen contained in the liquid fraction of the digestate byproduct of anaerobic digestion into a sustainable fertiliser suitable for use on all the farm's crops.
CycleØ invested €2.5 million in the development and construction of the facility in Granja La Carbona, which has a maximum production capacity of 15,000 MWh per year. That is enough power to reduce the equivalent of 9,000 tonnes of CO2 emissions annually, according to the company.
CycleØ’s industrial subsidiary, FNX, developed, designed, and built the biogas upgrading technology used in this plant. This includes proprietary, optimised membrane-based cleaning and biogas compression equipment that allows the plant to produce Bio-CNG or Bio-LNG with 99% purity.
“We’re very excited about this project,” said Jordi Berengué Piqué, managing director of FNX. “This is an excellent example of how our modular biogas upgrading technology can bring numerous benefits to the agri-food sector, reducing greenhouse gas emissions and developing circular economy models.”
The small-scale plant joins another facility in Vilanant, Catalonia, to become CycleØ’s second operational installation in Spain and the company’s first fully developed, owned, built and operated facility in the country.
In the coming months, CycleØ will complete its third Spanish facility, located on another livestock farm near Granja La Carbona.
The company has invested €2 million in the plant, which will produce 10 GWh of biomethane per year, equivalent to the annual consumption of 1,250 households.
“The biomethane we produce can be injected into existing gas grids, and the Bio-CNG or Bio-LNG can be used as fuel for heavy transport,” explained CycleØ CEO Laurence Molke. “Through projects like this one, we’re investing in Spain’s emerging bioenergy market and helping meet national decarbonisation targets—while working with farmers to reduce costs and increase sustainability.”