World's first off-grid solar-to-hydrogen plant to be built in Spain

A new partnership between Israeli startup H2Pro and renewable energy developer Doral Hydrogen is set to build the world’s first off-grid solar-to-hydrogen plant in Extremadura, Spain. This project aims to produce green hydrogen directly from solar power without relying on grid electricity, addressing the high costs and technical challenges associated with conventional electrolyzers that require steady baseload power. By using H2Pro’s Decoupled Water Electrolysis (DWE) technology, which separates hydrogen and oxygen production and can handle intermittent renewable energy without hardware damage, the plant will enable flexible, efficient hydrogen production that matches the fluctuating output of solar power. The initial phase will feature a 5 MW DWE system paired with 10 MWp of solar capacity, with plans to scale up to a 50 MW renewable fuels facility supported by 80 MWp of solar generation. The produced hydrogen will be immediately blended into existing natural gas pipelines operated by Enagás, allowing for early revenue generation without costly infrastructure changes.