Mayor of Madrid and King of Spain inaugurate green hydrogen pilot

July 2, 2026 |

In Spain, the president of the Community of Madrid, Isabel Díaz Ayuso, has inaugurated with Her Majesty King Felipe VI the Center for Water and Energy Innovation of Canal de Isabel II, in the framework of the commemoration of the 175th anniversary of the public company, which has the Honorary Presidency of the monarch.

Both have known their new facilities, located in the Wastewater Treatment Station (WWTP) Arroyo Culebro Cuenca Media Alta, in Pinto. The complex is a national reference for its size, the use of cutting-edge processes and its strategic role in the circular economy. Since 2012, it has supplied high-quality regenerated water to make 100% recycled paper. In fact, last year almost 3 cubic hectometers of the 15 reused in the region went to this industry. 

The new Innovation Center brings together pioneering projects that combine renewable generation technologies with reuse measures linked to urban wastewater treatment. Among the new infrastructures is a green hydrogen production plant that employs reclaimed (rather than potable) water and uses clean energy sources. 

It can generate about 400 kilos of green hydrogen daily, equivalent to that which would need a vehicle powered by this material to travel 40,000 kilometers by road. Almost half of the production will go to the refueling of trucks to decarbonize heavy mobility. In addition, it can be used for industrial uses and the obtaining of synthetic biofuels, also considered renewable. 

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Category: Research

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