Offshore technology firm Allseas has successfully completed the pipeline installation phase for the Porthos carbon dioxide transport and storage project, a significant step in the Netherlands' first large-scale carbon capture and storage (CCS) initiative. 

The CCS project, expected to be operational next year, aims to store CO2 beneath the North Sea, a move that will help the Netherlands meet its climate goals. 

Allseas' vessel Lorelay laid the 20-kilometer, 16-inch pipeline, which will transport captured CO2 from Rotterdam's industrial area to depleted gas fields. With the pipeline now in place, the project will move into the trenching phase, burying the pipeline for long-term protection and reliability.

Launched in October 2023, work on the pipeline faced a temporary setback on May 7 due to a technical issue with on-board tensioning equipment, but operations quickly resumed.

A gas platform will be converted for reuse by Porthos to inject the CO2 into depleted gas fields located approximately four kilometers under the North Sea, within a sealed reservoir of porous sandy rock.

Porthos is a joint venture among Energie Beheer Nederland, Gasunie, and the Port of Rotterdam. The project received support through a Connecting Europe Facility subsidy from the European Commission.

Dorus Bakker, Director of Finance at Porthos, previously highlighted Rotterdam's strategic role in the broader energy transition, encompassing CCS, sustainable transport, and hydrogen production, during the gasworld European CO2 Summit in March. 

The successful completion of this pipelaying phase marks a crucial milestone for the Netherlands' efforts to reduce industrial carbon emissions.