Repsol has begun construction of a 100 MW renewable hydrogen electrolyser at its Cartagena industrial complex, the first large-scale unit in the company’s planned expansion of renewable hydrogen capacity. The facility, backed by over €300 million of investment, will produce up to 15,000 tonnes of renewable hydrogen a year and is expected to avoid roughly 167,000 tonnes of CO₂ emissions annually.

The project has been designated an Important Project of Common European Interest (IPCEI) and will receive €155 million via Spain’s Institute for Energy Diversification and Saving (IDAE). Enagás Renovable holds a 25 per cent stake in the development, which is forecast to create about 900 direct, indirect and induced jobs across its lifecycle.

The plant is due to enter operation in 2029 and will form a key asset in the Hydrogen Valley of the Region of Murcia, matching hydrogen output to local industrial demand. The scheme also allows for future integration of renewable hydrogen into Spain’s gas grid and the national Hydrogen Core Network.

Repsol currently accounts for around 60 per cent of Spain’s hydrogen production, roughly 360,000 tonnes a year, and supplies about 4 per cent of Europe’s hydrogen demand. Enagás Renovable contributes a portfolio of projects in renewable gases and decarbonisation, supporting wider national deployment.