Joint ventures operated by Gassco

Gassco is operator for several joint ventures with varying ownership

Gassled was established on 1 January 2003, when virtually all the Norwegian gas transport systems in place at that time were combined in a large new joint venture. It comprises the land-based plants at Kårstø and Kollsnes as well as pipelines linking producing fields in the North Sea and parts of the Norwegian Sea to these facilities and/or providing onward transport to the UK and continental Europe.

Haltenpipe became operational in 1996. It connects the Heidrun field in the Norwegian Sea with the Tjeldbergodden facilities, where the gas is used to produce methanol and other products.

Valemon Rich Gas Pipeline became operational in 2015. It connects the Valemon field with the Heimdal platform, where the gas is processed.

Utsira High Gas Pipeline became operational in 2015. It connects the Edvard Grieg and Ivar Aasen fields in the North Sea with the Scottish Area Gas Evacuation (Sage) transport system in the UK sector.

Knarr Gas Pipeline became operational in 2015. It connects the Knarr field in the North Sea with the Far North Liquids and Associated Gas System (Flags) transport system in the UK sector.

Nyhamna gas processing plant became operational in 2007. It was originally built to process gas from the Ormen Lange field in the Norwegian Sea. The plant was expanded in 2017 to receive gas through Polarled and became a separate joint venture on 1 October that year.

Polarled became operational in 2018. It connects Aasta Hansteen in with Nyhamna, and will also be able to handle gas from future Norwegian Sea developments.

Vestprosess became operational in 1995. It is a processing plant for gas from Kollsnes and the Sture pipeline terminal.

See the overview of the various tariff areas

The transport licences have no employees, and are organised through various committees with specific assignments.

Gassled's owners  

Petoro AS (SDFI)*

46.697 %


26.322 %

Hav Energy NCS Gas AS 15.553 %
Silex Gas Norway AS 6.428 %
Equinor Energy AS 5.000 %
Petoro AS (SDFI)* 57.813 %
Equinor Energy AS 19.063 %
ConocoPhillips Skandinavia AS 18.125 %
Vår Energi AS 5.000 %
Valemon Rich gas Pipeline  
Equinor Energy AS 66.775 %
Petoro AS (SDFI)* 30.000 %
PGNiG Ustream Norway 3.225 %
Knarr Gas Pipeline  
A/S Norske Shell 45.000 %
Wintershall Dea Norge AS 30.000 %
Idemitsu Petroleum Noreg AS 25.000 %
Utsira High Gas Pipeline  
ABP Norway AS 26.831 %
Equinor Energy A/S 24.884 %
Aker BP ASA 20.872 %
Wintershall Dea Norge AS 9.877 %
OMV (Norge) AS 8.332 %
Sval Energy AS 7.390 %
M Vest Energy AS 1.814 %
Equinor Energy AS 30.056%
Petoro AS (SDFI)* 26.138%
CapeOmega AS 18.209%
North Sea Infrastructure AS 13.700%
PGNiG Ustream Norway AS 8.188%
A/S Norske Shell 2.027%
ConocoPhillips Skandinavia AS 1.681%
Equinor Energy AS 37.076%
CapeOmega AS 28.271%
Hav Energy AS 13.255%
Petoro AS (SDFI)* 11.946%
M Vest Energy 5.000% 
ConocoPhillips Skandinavia AS 4.452%
Vestprosess DA  
Petoro AS (SDFI)* 41.000%
Equinor Energy AS 34.000%
North Sea Infrastructure AS 23.000%
ConocoPhillips Skandinavia AS 2.000%

 * Petoro serves as the licensee for the Norwegian state's direct financial interest (SDFI) in petroleum activities.

Last update: 15.07.2020