Gassco
Norwegian state-owned gas transmission company operating the Gassled pipeline system and major processing plants including Kollsnes.
Gassco's exit nominations, the daily read on Norwegian pipeline exports, recovered to 319.8 mcm/day on 11 July 2026 as Equinor's Asgard field returned from maintenance, weeks after a Troll A compressor fault cut 34.6 mcm/day from 26 May.
Last refreshed: 28 September 2026 · Appears in 1 active topic
Why did Gassco file a Troll outage notice and how much Norwegian gas went offline?
Timeline for Gassco
Reported exit nominations recovering to 319.8 mcm/day
European Energy Markets: Storage and Norway absorb the gas shockmanaged throughput on Gassled infrastructure during outage
European Energy Markets: Troll A extended to 31 May; 51 mcm/day worst caseFiled the regulatory outage notice as operator of the Kollsnes processing plant
European Energy Markets: Troll fault pulls Norwegian gas offlineBackground
Gassco is the state-owned operator of Gassled, the pipeline network that carries Norwegian gas to Britain and continental Europe. Its daily exit nominations and outage notices are the market's earliest read on Norwegian exports, which supply roughly a quarter of EU gas. In July 2026 those nominations recovered to 319.8 mcm/day after summer field maintenance.
Established in 2001 and wholly owned by the Norwegian state, Gassco acts as a neutral, non-commercial operator: it owns no gas and does not trade, but runs transport and processing capacity on behalf of shippers. It operates the Kollsnes, Kårstø and Nyhamna processing plants and receiving terminals in Germany, Belgium, France and Britain. Gassco has its headquarters on Karmøy, north of Stavanger.
The model puts most of Norway's export capacity under one operator. When a field such as Troll loses output, as it did from 26 May 2026, Gassco's notices are how the rest of Europe learns of it.
Exit nominations recovered by mid-July
Gassco's system took its sharpest 2026 hit in late May. A compressor fault on Troll A cut 34.6 mcm/day of Norwegian send-out from 26 May, and Gassco filed the regulatory notice for the outage at the Kollsnes end of the chain, where Troll gas is processed.
By 11 July the picture had reversed. Exit nominations across Gassled, the daily volumes shippers commit to take out of the Norwegian system, recovered to 319.8 mcm/day as Equinor's Asgard field returned from maintenance. That rebound gave European storage enough Norwegian gas to keep injecting through that week's price swings without drawing on gas already stored, and Gassco's daily nominations were the first place traders saw Norway's supply come back.
What does Gassco do and who owns it?
Why did Norway's gas exports to Europe fall in late May 2026?
How does Gassco's pipeline system connect Norwegian gas fields to European consumers?
What is Norway's share of European gas supply?
What are Gassco's exit nominations and why do traders watch them?
Why did Norwegian gas exit nominations recover in July 2026?
Written with AI from Lowdown's published reporting. Not individually reviewed by an editor. Updated 28 September 2026. Editorial standards.