en.Wedoany.com Reported - The joint venture between Iberdrola España and bp, Castellón Green Hydrogen, has completed construction of a 25 MW green hydrogen plant to serve the Castellón refinery, and has now entered the testing phase.

The two companies expect the plant to begin producing green hydrogen before the end of this year, making it the largest operational green hydrogen facility in Spain by 2026. The 25 MW electrolyzer is powered by renewable electricity through a power purchase agreement (PPA) signed by Iberdrola, which will supply 200 GWh annually from its solar and wind projects. The electrolyzer uses proton exchange membrane (PEM) technology and consists of five 5 MW modules supplied by the U.S. company Plug Power, with which Acciona formed a joint venture in 2021.

The green hydrogen, produced through water electrolysis powered by renewable electricity, will meet European requirements for renewable fuels of non-biological origin (RFNBO) and support bp's transformation of the Castellón refinery into an integrated energy hub. The expected 2,800 tonnes of green hydrogen per year will replace part of the gray hydrogen currently produced from natural gas at the refinery. The project investment exceeds €70 million, with participation from the Valencia Institute of Energy Technology (Instituto Tecnológico de la Energía, ITE), and has received €15 million in financing from the renewable hydrogen innovation value chain and knowledge assistance program under Spain's Recovery, Transformation and Resilience Plan, funded by the European Union's NextGenerationEU. The Spanish Ministry for Ecological Transition and the Demographic Challenge, through the Institute for Energy Diversification and Saving (IDEA), has approved the reallocation of up to €211 million in financing from the IPCEI Hy2USE project to Castellón.