Equinor and its partners have agreed to invest just over NOK4bn (EUR359m) in a new subsea development known as the Troll West Increased gas recovery North (TWIN) project, aimed at boosting gas output from the Troll field in the Norwegian North Sea (Equinor press release, 19/06/2026). The Troll field, located on the Norwegian Continental Shelf (NCS), is a major gas supplier for Europe and contains around 40% of Norway’s total gas reserves.
The TWIN project represents the third stage of the ongoing Troll phase 3 development. It is expected to produce approximately 11 bcm of gas over its operational lifetime. The development will consist of two new wells drilled from a subsea template, connected to existing subsea infrastructure through a new pipeline. The TWIN project is part of a wider strategy to maximise production from the western section of the Troll reservoir. It follows the second stage of Troll phase 3, which is scheduled to start production in 2026.
According to the company’s statement, “The second step will come on stream during 2026 and will ensure continued high production from Troll A and Kollsnes towards 2030. Both the platform and the onshore plant are powered by electricity from shore, meaning the gas will be produced with very low emissions”.
Equinor’s partners in the project include Petoro (56%), Shell (8.2%), TotalEnergies (3.7%), and ConocoPhillips (1.6%).