CelZa: Green Hydrogen Link Between Portugal and Spain

CelZa is part of the H2med project.

CelZa is a strategic 270km pipeline project dedicated to transporting green hydrogen between Portugal and Spain, connecting Celorico da Beira to Zamora respectively. This 100% hydrogen transmission infrastructure will link the future national hydrogen backbones of both countries, supporting the integration of the Iberian network into the wider European system. Each of the two involved transmission system operators, REN and Enagás, will be responsible for developing the interconnection section within their respective territories—approximately 184 km in Portugal and 86 km in Spain.

CelZa Project Objectives

CelZa will play a key role in exporting renewable hydrogen produced in Portugal from most notably solar and wind sources, to the European market. Concretely, CelZa’s transmission capacity will be of 0.75 million tonnes of hydrogen per year (MTPA).

CelZa Key Figures & Technical Data

CelZa
Pipeline
Length 270km
Diameter 28”
Maximum depth /
Operating pressure Up to 100 bars
Compressor station
Power ≈ 30 MW
Maximum transmission capacity 0.75 Mt per year
Budget ≅ 350 million €

The routes

TheRoutes_Celza_new_1804_New
  • 248 km of pipeline length
  • 0.75 MTPA (million tonnes per annum) of transmission capacity
  • ≈ €350 million budget
  • Target commissioning: Early 2030s

Project Owners

Project timeline

2026

Application for CEF funds for construction.

Q4 2026

Public consultation on Environmental Impact Assessment.

2027

FID (Final Investment Decision).

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