Alfa Laval has been selected to provide critical cooling technology for Moeve’s Onuba H2 project in Huelva, Spain, a 300 MW green hydrogen development that is set to become the largest electrolyser plant in Southern Europe.
The project, located at Moeve’s La Rábida Energy Park, forms the industrial anchor of the Andalusian Green Hydrogen Valley. Its initial 300 MW of electrolysis capacity could later be expanded by another 105 MW, while planned green hydrogen production is expected to reach approximately 45,000 tonnes per year.
Alfa Laval will supply a total of 60 heat exchangers for the facility, covering balance-of-plant cooling, electrolyser cooling and gas cooling. The equipment will help maintain the operating conditions required for efficient, reliable and safe large-scale hydrogen production.
Cooling technology for large-scale green hydrogen production
Thermal management is an important part of electrolyser operation, particularly as green hydrogen projects move towards larger industrial capacities.
For Onuba H2, Alfa Laval’s heat-transfer equipment will be integrated into different parts of the electrolysis system to manage temperatures during hydrogen production and associated processes.
“We are honored to contribute with our expertise and technology to the Onuba H2 project, which stands at the forefront of Europe’s energy transition,” said Thomas Møller, President of Alfa Laval’s Energy Division.
He added that the company’s heat-transfer technologies are intended to support efforts to decarbonise industry and transport while contributing to European energy security.
Onuba H2 targets 45,000 tonnes of green hydrogen annually
Led by Moeve, Onuba H2 is positioned as a major component of Spain’s emerging renewable hydrogen industry. The project is expected to produce 45,000 tonnes of green hydrogen annually, providing renewable hydrogen for applications aimed at reducing emissions from transport and industrial activities.
The development is part of the wider Andalusian Green Hydrogen Valley, which has been recognised by the European Commission as a Project of Common Interest (PCI). According to Alfa Laval, the designation can facilitate access to public grants and subsidies.
The project is particularly focused on sectors where direct electrification can be difficult, including energy-intensive industries and heavy transport. Renewable hydrogen can replace more carbon-intensive fuels and feedstocks in some of these applications.
Andalusia builds its green hydrogen industry
The Onuba H2 project is designed to take advantage of Andalusia’s renewable energy resources, existing industrial infrastructure and strategic location.
For Alfa Laval, participation in the project also highlights the wider supply chain required to move green hydrogen production to industrial scale. Electrolysers represent the core production technology, but large facilities also depend on supporting systems for cooling, gas handling and other balance-of-plant functions.
With 300 MW planned initially, a potential additional 105 MW and expected production of 45,000 tonnes of green hydrogen per year, Onuba H2 is set to become a significant part of the Andalusian Green Hydrogen Valley and Moeve’s renewable hydrogen ambitions in Spain.