Gassco

Gassco is a Norwegian state-owned company responsible for operating the integrated system that transports natural gas from the Norwegian continental shelf to continental Europe and Great Britain. It was established by the Norwegian Ministry of Petroleum and Energy on 14 May 2001 and assumed operatorship of the Norwegian gas-transport system on 1 January 2002. Its creation formed part of a broader restructuring of Norway’s petroleum sector and reflected European requirements for separating gas-transport operations from commercial gas production and sales. The company’s role is primarily infrastructural and regulatory rather than commercial. Gassco operates the transport system on behalf of its owners while administering capacity and access for users. Its mandate requires it to treat gas producers neutrally and to make the system available on equal terms. The company’s framework is set by the Norwegian government, the Petroleum Activities Act and agreements with infrastructure owners. Gassco generally does not make a profit or loss from its operatorship; users fund operating costs through tariffs, with tariff structures also recovering infrastructure owners’ capital expenditure. Gassco operates approximately 8,800 kilometres of gas pipelines, associated riser platforms and land-based facilities. Reference material describes the system as moving roughly 100 billion cubic metres of gas annually, equivalent to around 9% of total natural-gas consumption in continental Europe. The network includes pipelines such as Statpipe, Europipe, Franpipe, Zeepipe, Langeled, Vesterled, Åsgard Transport, Oseberg Gas Transport, Norpipe, Gjøa gas pipeline and Kvitebjørn gas export. Its offshore infrastructure includes the Draupner S and E riser platforms, Heimdal Riser and B-11. The operating portfolio also includes three major Norwegian processing plants: Kårstø, Kollsnes and Nyhamna. These facilities remove natural-gas liquids and other components, compress gas for export and prepare products such as liquefied petroleum gas, naphtha and condensate for shipment. Kårstø processes rich gas and condensate from areas including Statfjord, Åsgard and Sleipner. Kollsnes processes gas from fields including Troll, Kvitebjørn and Visund and connects with the Vestprosess system serving the Mongstad area. Nyhamna processes gas from the Norwegian Sea and feeds export infrastructure serving European markets. In Europe, Gassco operates or supports receiving terminals at Emden and Dornum in Germany, Easington and St Fergus in Great Britain, and Zeebrugge and Dunkerque for Belgium and France. Through this network, Gassco provides the operational backbone for Norway’s role as a major supplier of pipeline gas to Europe. Its activities have also broadened toward future energy infrastructure. In 2024, Gassco signed a memorandum of understanding with Gascade Gastransport concerning a possible hydrogen pipeline linking Norway and Germany in the North Sea. In 2025, the Norwegian Ocean Industry Authority authorised a proposed new connection from the Troll B platform to the Kvitebjørn pipeline.

Gassco was created during a major reorganisation of Norway’s oil and gas sector. The Norwegian Ministry of Petroleum and Energy founded the company on 14 May 2001, and Gassco took over operatorship of gas transportation from the Norwegian continental shelf on 1 January 2002. Before that transition, gas-transport responsibilities had been distributed among several companies. Establishing a dedicated operator was consistent with the European Union’s gas-market rules, which encouraged a clearer separation between infrastructure operations and the commercial interests of producers and sellers. The political basis for the new operating model was set out in Norwegian parliamentary Proposition No. 36 for 2000–01 and subsequent parliamentary committee recommendations. These arrangements required the transport and processing system to serve all gas producers and directed Gassco to operate neutrally. The company was also given a strategic role in developing the gas infrastructure as a coordinated system, with the objective of using Norway’s continental-shelf resources efficiently and ensuring dependable exports. Gassco’s operatorship has two principal dimensions. Its normal operatorship covers the day-to-day running of transport and processing facilities on behalf of infrastructure owners. Its special operatorship covers system operation and capacity administration for all users of the Norwegian gas-transport system. The latter responsibilities arise directly from the Petroleum Activities Act and are intended to protect equal access and coordinated use of the network. Infrastructure owners usually finance major investments and account for them themselves, while users pay tariffs that fund system operation and recover relevant capital costs. The company’s infrastructure includes a large offshore and onshore network of pipelines, riser platforms, processing plants and European receiving terminals. Kårstø began receiving gas in 1985 and became a major processing and export facility for rich gas, natural-gas liquids and condensate. Kollsnes entered service in 1996 as part of the Troll Gas development and later received substantial capacity expansions, including additional NGL and compression facilities. Nyhamna became another key processing location for Norwegian gas from the Norwegian Sea. Together, these facilities separate gas into saleable streams, remove or recover liquids, compress dry gas and connect Norwegian production to export pipelines. Gassco’s system links the Norwegian continental shelf with Germany, Great Britain, Belgium and France. Its responsibilities include pipelines such as Statpipe, Europipe, Zeepipe, Langeled, Franpipe and Vesterled, as well as associated riser platforms and receiving terminals. The system has become an important component of European energy supply, carrying around 100 billion cubic metres of natural gas per year according to the cited reference material. More recently, Gassco has addressed both asset retirement and potential energy-system transition. It submitted a decommissioning programme for the Knarr Gas Pipeline in February 2024 after the Knarr field stopped production in May 2022. In April 2024, it signed a memorandum of understanding with Gascade Gastransport to examine a possible hydrogen connection between Norway and Germany. In April 2025, the Norwegian Ocean Industry Authority authorised a new connection point from Troll B to the Kvitebjørn pipeline. These developments illustrate Gassco’s continuing role as an operator of existing gas infrastructure while assessing how parts of the network could support future energy transport.

• 2025

  Troll B–Kvitebjørn connection authorised

  [1]Gasscoen.wikipedia.org

  The Norwegian Ocean Industry Authority authorised a new connection point from Troll B to the Kvitebjørn pipeline.

• 2024

  Hydrogen infrastructure cooperation begins

  [1]Gasscoen.wikipedia.org

  Gassco and Gascade Gastransport signed a memorandum concerning a possible Norway–Germany hydrogen pipeline.

• 2022

  Knarr field production ends

  [1]Gasscoen.wikipedia.org

  Production from the Knarr field ceased in May 2022, preceding the proposed removal of its associated gas pipeline.

• 2006

  Sixth Kollsnes export compressor enters operation

  [1]Gasscoen.wikipedia.org

  Kollsnes added a sixth export compressor, increasing the plant’s ability to process and export gas.

• 2005

  Additional Troll A compression installed

  [1]Gasscoen.wikipedia.org

  A new compressor was installed on the Troll A platform to support the Kollsnes-linked system.

• 2004

  Kollsnes NGL capacity expands

  [1]Gasscoen.wikipedia.org

  A new NGL extraction plant began operating at Kollsnes.

• 2002

  Gassco assumes gas-transport operatorship

  [1]Gasscoen.wikipedia.org

  On 1 January 2002, Gassco took over operatorship of gas transportation from the Norwegian continental shelf.

• 2001

  Gassco is established

  [1]Gasscoen.wikipedia.org

  The Norwegian Ministry of Petroleum and Energy founded Gassco on 14 May 2001 during a restructuring of the country’s gas-transport sector.

• 1996

  Kollsnes processing plant enters service

  [1]Gasscoen.wikipedia.org

  The Kollsnes plant became operational on 1 October 1996 as part of the Troll Gas development.

• 1985

  Kårstø receives its first gas

  [1]Gasscoen.wikipedia.org

  The Kårstø complex received its first gas through a pipeline from the Statfjord field on 25 July 1985, and began forwarding dry gas to Emden later that year.

A neutral, state-owned infrastructure operator focused on safe, reliable and non-discriminatory transportation and processing of Norwegian natural gas rather than gas production or gas marketing.

• Natural-gas infrastructure · 2002

  Integrated gas transport system

  Gassco operates the integrated pipeline and riser system that moves Norwegian natural gas from offshore fields to processing plants and export terminals. The network includes approximately 8,800 kilometres of pipelines and serves continental Europe and Great Britain. Gassco’s responsibility covers safe operation, coordination and capacity administration rather than ownership of all the underlying assets.

• Gas processing services · 1985

  Gas processing

  At Kårstø, Kollsnes and Nyhamna, Gassco operates facilities that separate methane and other gas components, recover natural-gas liquids, stabilise condensate and compress dry gas for export. Processing outputs include methane, ethane, propane, butanes, naphtha and stabilised condensate, depending on the facility and incoming field streams.

• Gas import-terminal operations

  European receiving terminals

  Gassco operates or supports receiving facilities that bring Norwegian pipeline gas into European markets. The cited facilities include Emden and Dornum in Germany, Easington and St Fergus in Great Britain, and terminals serving Belgium and France at Zeebrugge and Dunkerque.

• Hydrocarbon liquids handling · 1985

  Natural-gas liquids and condensate handling

  The Kårstø complex separates and stores LPG components, naphtha and stabilised condensate. Propane and butanes can be shipped to customers worldwide, while dry gas continues through export pipelines. The facility therefore combines gas treatment with marine handling of associated liquid products.

• 2025

  Troll B connection to Kvitebjørn pipelineOther

  Background

  A proposed new connection would link production infrastructure at the Troll B platform with the Kvitebjørn pipeline.

  Action taken

  The Norwegian Ocean Industry Authority authorised Gassco to add the connection point in April 2025.

  Source

• 2024

  Knarr Gas Pipeline decommissioning programmeM&A

  Background

  The Knarr field stopped producing in May 2022, leaving its associated gas pipeline subject to decommissioning planning.

  Action taken

  Gassco submitted a programme in February 2024 for removal of the Knarr Gas Pipeline.

  Source

• 2024

  Hydrogen pipeline cooperation with GascadeStrategy

  Background

  Norway and Germany explored future energy infrastructure that could complement or succeed parts of the existing natural-gas system.

  Action taken

  Gassco signed a memorandum of understanding with Gascade Gastransport for a possible hydrogen pipeline between Germany and Norway through the North Sea.

  Source

1. 1Gasscoen.wikipedia.org