Repsol to build first large-scale renewable hydrogen plant

€300 million project will produce 15,000 tonnes of renewable hydrogen annually and cut CO₂ emissions by 167,000 tonnes.

Repsol is accelerating its hydrogen strategy with the launch of its first major renewable hydrogen project — a 100 MW electrolyzer to be built at the company’s industrial complex in Cartagena, Spain. 

Developed in partnership with Enagás Renovable, which holds a 25% stake, the project represents a major milestone in Repsol’s plan to replace conventional hydrogen with renewable hydrogen across its industrial operations. The new facility will have the capacity to produce up to 15,000 tonnes of renewable hydrogen per year, which will be used as a raw material to manufacture essential products with a lower carbon footprint.

Once operational, the plant will avoid up to 167,000 tonnes of CO₂ emissions annually, equivalent to two-thirds of Spain’s total fleet of fully electric vehicles in 2024.

The project has been designated a Project of Common European Interest (IPCEI in Spanish) by the European Commission and the Spanish government, and will receive €155 million in funding through Spain’s Institute for Energy Diversification and Saving (IDAE).

Scheduled to come online in 2029, the Cartagena electrolyzer will be a cornerstone of the Hydrogen Valley of the Region of Murcia, one of Spain’s most ambitious regional hydrogen initiatives. 

Repsol is currently Spain’s largest producer and consumer of hydrogen, accounting for 60% of the country’s total production and 4% of Europe’s hydrogen consumption.