HoST Bioenergy contracts Five Bioenergy for five largest biogas plants in Spain

In Spain, HoST Bioenergy has signed and agreed contracts with Five Bioenergy to deliver five of the largest biogas facilities in Spain. They will be located in Castilla Leon, Aragon, and Murcia regions. The plants will include biogas upgrading systems for nearly 0.8 TWh of biomethane production and CO2 liquefaction plants to recover and liquefy the CO2 from the anaerobic digestion process. The construction of two of the projects started in early 2025.

Two of these plants, Milagros and Lorca are under construction today. The project scope for Milagros features three primary digesters and two after digesters; while in Lorca the project features six primary digesters and three after digesters. All digesters are 40 meters in diameter and 8 meters high. The complete technology package will be delivered by HoSt, such as feeding systems, mixers, roofs, sensors, control system, local pipe and cable works, and heat exchangers. This last feature also ensures a stable degree in the digester tanks during the different climates in Spain.

To maximize renewable energy production, both projects include biogas upgrading and CO₂ liquefaction technology. These systems are provided by Bright Renewables. Together, the biogas upgrading systems will yield 29 million Nm3 of biomethane and the CO₂ liquefaction systems will produce over 40,000 tons of liquid bio-CO₂ annually. The produced bio-CO₂ will be of food-grade quality.