Norway’s Troll Gas Expansion Buys Europe Time—But Not New Supply

Norway has initiated production from the second phase of the Troll Phase 3 development, increasing gas output from the Troll West reservoir and aiding Europe's gas supplies. Production commenced on August 22, ahead of schedule and under budget, according to Equinor. This project does not add new gas reserves, but rather releases existing reserves, maintaining Troll A and the Kollsnes processing plant's output as other Norwegian fields mature and decline.

The 55 billion cubic meters covered by the project equals nearly two years of French gas demand. The development could potentially increase by up to 7 billion cubic meters in a single year, representing about 6% of Norway's recent annual gas exports. Troll A, which began production in 1996, remains a crucial component of Europe's gas system, supplying around 10% of European consumption.

Troll A, powered from shore, has a significantly lower operational emissions intensity than many competing gas sources. The project, which started on the same day Equinor signed a 15-year agreement to supply Germany's Uniper with more than 30 terawatt-hours of gas annually from 2027, highlights the link between Norway's upstream investments and Europe's increasing demand for long-term supply certainty.

This acceleration of Troll's production through reuse of existing platforms, pipelines, and processing plants represents a growing structural dependency on pushing more volumes through infrastructure built decades ago. While the start-up is positive for Europe, it should not be seen as a replacement for new supply. Troll's enormous resource base and existing infrastructure can sustain European gas deliveries for decades, but future production will require new projects and discoveries to replace volumes brought to market earlier.