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Porthos: CCS on megascale

The project

PORTHOS is a project to install and operate a CO2 transport and storage hub, connecting multiple CO2 emission sources in the Rotterdam industrial complex with depleted gas fields for permanent storage of the captured CO2.

The Port of Rotterdam CO2 Transport Hub and Offshore Storage project PORTHOS is an initiative by three state-owned companies: the Port of Rotterdam, Gasunie, and EBN. To ensure ample supply of captured CO2 and commercial viability, PORTHOS was developed in close contact with launching industrial customers Shell, ExxonMobil, Air Liquide and Air Products and with the Dutch government for financial support.


Scope and Dimensions

The system consists of an open-access onshore pipeline backbone, a compressor station near the coast and an offshore pipeline to a platform and three depleted gas fields for storage capacity. The total project lifetime costs (Capex and Opex) amount to some €3-3,5 billion. Porthos will be the largest CCS hub project in the world, once delivered.


DAREL acted as project director and advisor, kick-started and managed the project through Assessment and Concept Select into FEED stage. DAREL subsequently advised on potential expansion of PORTHOS.


The annual direct CO2 emissions avoided approximately 2,5 million tons of CO2 and 35-40 million tons over the project lifetime of 15 years.


  • Infrastructure

  • CO2

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