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H2 , Madrid

Household decarbonisation: designing Spain’s first residential hydrogen installation

The use of green hydrogen, generated from low-carbon technologies or through renewable energy sources, has the potential to help decarbonise the built environment. 

Referred to as a clean gas, Hydrogen is seen by many as one of the key enablers of our energy transition, which can help drive our efforts to meet decarbonisation targets, such as those set out by the European Union in the European Green Deal.

Renewable hydrogen installations for use in buildings, however, pose several particularly complex technical, regulatory and safety challenges.

Appointed by Madrileña Red Gas, Arup designed the first renewable hydrogen installation in Spain that will generate heat and domestic hot water for 100 houses in Valdemoro (Community of Madrid), which construction is foreseen to install during 2023. Main challenge is that manufactures are still developing boilers for 100% hydrogen so technical information is limited.

Arup’s experts delivered mechanical, electrical and public health engineering (MEP), as well as energy consultancy services for the design of the building and storage facility, hydrogen distribution system, and boiler room. The installation also needed advisory work on the urban viability and health and safety conditions.

Project Summary


1st in Spain

0tCO2local emissions

Conceptual, preliminary design and project feasibility

To achieve the construction of an efficient hydrogen installation in the Spanish residential sector, Arup brought in a collaborative team that had previously worked on industrial gas and hydrogen projects. 

Our specialists used their first-hand experience from the design and construction management of hydrogen generation, storage and distribution facilities in the UK to address the technical, regulatory and safety challenges linked to renewable hydrogen installations for consumers.

The ability to provide an understanding of the local context and an in-depth technical knowledge from feasibility through to detailed design and construction, has been largely dependent on local presence and expertise – including knowledge of gas networks, permit management, business case analysis, stakeholder engagement, and cost estimation for the two residential buildings.