Moeve has marked the start of construction of Onuba, the first phase of the Andalusian Green Hydrogen Valley, at its energy park in Palos de la Frontera, Huelva. The initial facility is designed for 300 MW of electrolysis capacity, with an option to add a further 105 MW. The first phase represents a joint investment of more than €1 billion, including associated infrastructure.
The company expects the plant to be capable of producing approximately 45,000 tonnes of renewable hydrogen annually. It intends to use the output to support lower-emission fuels for road, aviation and maritime transport and to serve industrial decarbonisation needs. These figures are project expectations rather than operating results: the facility has only just entered construction.
Moeve retains a 51% majority stake. Hy24 and the Spanish public-private finance institution COFIDES have joined as partners with a combined 29% interest, while Enagás Renovable and Alter Enersun hold the remaining 20%. The European Union has designated the first phase a Project of Common Interest, and the development has secured €304 million of Spanish government funding backed by the EU’s NextGenerationEU programme for 405 MW of the wider hydrogen valley.
Moeve says Onuba will incorporate a digital twin and a shared data and industrial internet platform from the design stage, intended to support monitoring and predictive operations. The company places the project within a broader plan for hydrogen production at its energy parks in Huelva and San Roque, Cádiz. Construction of this first phase is the immediate test of that strategy, requiring the electrolysers, renewable power supply and associated infrastructure to come together at industrial scale.
