Repsol is making further progress in its industrial decarbonisation strategy through renewable hydrogen and will install its second large-scale electrolyser at its Petronor refinery in Muskiz close to Bilbao in Northern Spain. Last September, the company approved the construction in Cartagena of its first large electrolyser, with a capacity of 100 megawatts (MW).

The new 100MW infrastructure will require an investment of €292m for commissioning in 2029. Recognised by the European Commission as an Important Project of Common European Interest (IPCEI), it will have the support of the Government of Spain and will receive €160m through NextGenerationEU funds from the Spanish Recovery, Transformation, and Resilience Plan.

The electrolyser will have the capacity to produce up to 15,000 tons of renewable hydrogen per year, which will mainly be used in processes at the Petronor the refinery itself. As part of the Basque Hydrogen Corridor, it will also supply renewable gas to the region’s industry, driving its decarbonisation with a key contribution, as it will prevent the emission of up to 167,000 tons of CO₂ per year, equivalent to the emissions saved by two-thirds of the 100% electric vehicle fleet in Spain in 2024.