What is Porthos?

The Netherlands has clear climate objectives: the emission of greenhouse gases must be reduced by 49% in 2030 and by 95% in 2050 compared with 1990. One way to achieve the climate objectives is to capture CO for use or for storage underground (Carbon Capture Utilisation and Storage, CCUS in short). The national coalition agreement and the national Climate Agreement underline the importance of CCUS for the energy transition.

Porthos is preparing a project to transport CO₂ from industry in the Port of Rotterdam and store this in empty gas fields beneath the North Sea. Porthos stands for Port of Rotterdam CO₂ Transport Hub and Offshore Storage.

 

 

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Companies capture CO2 that is released during their production processes and supply this to the Porthos collective pipeline that will run through the Rotterdam port area.

Porthos will transport the CO2 via the collective pipeline to the compressor station. The CO2 will be pressurised there before being transported via a pipeline beneath the North Sea to a platform some 20 km off the coast.
The Porthos infrastructure is also suitable for transporting CO2 for use in industries, such as greenhouse horticulture where it enables plants to grow faster.

The CO2 will be pumped into empty gas fields approximately 3 km beneath the North Sea seabed.

How will Porthos be utilised?

  • 1CO2 capture
  • 2CO2 transport
  • 3CO2 storage

How will Porthos be utilised?

Companies capture CO2 that is released during their production processes and supply this to the Porthos collective pipeline that will run through the Rotterdam port area.

Porthos will transport the CO2 via the collective pipeline to the compressor station. The CO2 will be pressurised there before being transported via a pipeline beneath the North Sea to a platform some 20 km off the coast.
The Porthos infrastructure is also suitable for transporting CO2 for use in industries, such as greenhouse horticulture where it enables plants to grow faster.

The CO2 will be pumped into empty gas fields approximately 3 km beneath the North Sea seabed.

Porthos is an initiative of

Porthos is a partnership between the Port of Rotterdam Authority, Gasunie and EBN. These state shareholdings play an important role in the Dutch energy landscape. They aim to contribute to reducing CO emissions in the Netherlands as well as play an active role in the energy transition.

Each of the organisations brings its own experience and expertise to this CCUS project: the Port of Rotterdam Authority will be focusing on the local situation and market, Gasunie can offer extensive experience with gas infrastructure and transport, and EBN will be sharing its expertise in the area of deeper soil layers and offshore infrastructure.

For more information about the partners:

 

Veelgestelde vragen

Why is this CO​2​ project being developed?

Porthos offers companies the opportunity to reduce their CO2 emissions during the period in which they have not yet made the transition to biobased, renewable or circular. This enables companies to contribute to the Netherlands’ climate objectives and to the energy transition, even if the alternatives are still not sufficiently available or developed.

CCUS can be introduced more quickly than, for instance, the electrification of industrial processes or the use of ‘green’ hydrogen as energy source. CCUS is also a more inexpensive measure than for example switching homes from natural gas or driving electric. The long-term objective continues to be the sustainability of production processes.

Where will the CO​2​ pipeline be laid?

The pipeline on land will be laid in the existing pipeline strip along the A15 via Botlek-Vondelingenplaat up to Maasvlakte. Porthos is  currently looking into two possible routes: a northern and a southern route. For both routes, the pipeline on land will be approximately 30-33 km. A pipeline will also be laid beneath the North Sea seabed to an empty gas field some 20 km off the coast.

The final route choice depends on various factors, including the technical possibilities, the location of the compressor station, the costs and the environmental impact. The latter will be investigated in the Environmental Impact Assessment (EIA).

In which fields will the CO​2​ be stored? Who owns the fields?

Porthos is focusing on the transport and storage of CO2 in empty gas fields P18-2, P18-4 and P18-6. TAQA has extracted gas from these fields, and the fields are available for storage. The existing P18A platform operated by TAQA can be used for the injection of CO2.

When will the storage of CO​2 start​?

Porthos is currently working on the technical details, the Environmental Impact Assessment (EIA) and is also making agreements with companies and the government. Porthos expects to take a final investment decision in mid-2021. As soon as the investment decision has been taken, the construction of the infrastructure will start. It is expected that the system will be operational by the end of 2023.

Which parties will be supplying CO​2​?

Porthos signed partnership agreements (Joint Development Agreements) with four companies in autumn 2019: ExxonMobil, Shell, Air Liquide and Air Products. The agreements stated that the companies will work in parallel over the coming nine months on preparations for the capture, transport and storage of CO2. The companies’ commitment is not binding: the companies can still withdraw, and other companies can join.