Repsol advances 100MW electrolyser
Green hydrogen will be used to decarbonise Cartagena refinery and other local industry applications in southern Spain
A consortium led by Spanish energy firm Repsol has advanced plans for the installation of a 100MW electrolyser in southern Spain. The €215mn ($212mn) electrolyser will be situated in the Escombreras Valley near Cartagena and will produce green hydrogen that will be used to displace natural gas in local industrial applications. Repsol owns and operates a large refinery at Cartagena that will replace the grey hydrogen used in its operations with green hydrogen from the electrolyser. French utility Engie, which is also a partner in the electrolyser project, will use the hydrogen to create heat in its industrial processes. Meanwhile, renewable oxygen, produced by the electrolyser alongside hydro

Also in this section
14 May 2025
Defining moment for US hydrogen sector as House Republicans seek termination of green tax credits
13 May 2025
Existing specifications have been a good starting point for standardisation of hydrogen quality, but they need rethinking—a 99.5 mol-% specification is a promising candidate
12 May 2025
The sector needs a standard covering hydrogen quality for the entire value chain, but no single hydrogen quality covers the needs of all stakeholders
9 May 2025
Hydrogen quality is an increasingly important area for the sector. Though well-established standards are in place, they typically cover only certain parts of assets and value chain