Alfa Laval selected as technology provider for electrolyzer cooling in one of Europe’s largest renewable hydrogen projects

September 3, 2026 |

In Sweden, Alfa Laval announced its selection as the technology provider for electrolyzer cooling equipment for the Onuba H2 project, a flagship initiative within the Andalusian Green Hydrogen Valley. This milestone project, led by Moeve, represents the largest renewable hydrogen project in Southern Europe.

The Onuba H2 project, located at the La Rábida Energy Park in Huelva, is set to become the largest electrolyzer plant in Southern Europe. With an initial electrolysis capacity of 300 MW and the option to expand by an additional 105 MW, the facility is expected to produce 45,000 tons of green hydrogen annually. As the industrial anchor for the Andalusian Green Hydrogen Valley, the most ambitious renewable hydrogen project in Spain and one of the most significant in Europe, Onuba will play a pivotal role in decarbonizing the transport and industrial sectors.

Alfa Laval will supply state-of-the-art heat transfer equipment to Moeve for the Onuba H2 electrolyzer plant including balance of plant cooling, electrolyzer cooling, and gas cooling. Altogether, the scope consists of 60 Alfa Laval heat exchangers. These advanced cooling solutions are critical for maintaining optimal operating conditions within the electrolyzer, ensuring efficiency, reliability, and safety in the large-scale renewable hydrogen production, the company said.

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Category: Hydrogen

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