NSTA: North Sea cuts production losses for the first time since 2021

The North Sea Transition Authority (NSTA) has reported that UK North Sea production reached over 7.5 million BOE in 2025, an increase of 21,000 on the previous year. Production efficiency (PE), which compares actual output against maximum potential, rose one percentage point to 76%. That is progress, but it still sits below the 80% PE target the NSTA has set for the basin.

The gain came from better maintenance planning, tighter shutdown execution, and work with the NSTA to identify inactive wells that could be brought back online. According to the FT, output rose despite the North Sea being a mature, declining basin. Reuters reported the increase alongside the wider efficiency improvement, the first time since 2021 that operators cut production losses from problems with facilities, wells, and transport systems.

What this means for UK buyers

For UK commercial energy buyers, domestic supply matters because it feeds directly into the balance of gas the UK imports through LNG and pipeline. Marginally higher North Sea output does not shift the National Balancing Point (NBP) curve on its own, but a more reliable basin reduces the risk premium buyers pay when domestic supply looks fragile. The signal here is stability rather than a price cut.

NBP day-ahead across the last 12 months sets the context for reading how much steadier domestic output feeds into the curve buyers watch.

The detail worth tracking sits in the loss figures:

• Total production losses of 114 million BOE in 2025
• 73% of those losses attributed to turnarounds and shutdowns (TAR)
• Maintenance, upgrades, and inspections driving the TAR share
• First reduction in overall losses since 2021
• PE at 76% against an 80% target

Tom Wheeler, NSTA Operations Director, said the improvement shows that 'even established basins like the North Sea can generate more output for those who maintain high operational standards'. He added that the NSTA will keep supporting operators through stewardship reviews, data tools, and collaborative industry efforts.

The near-term question is whether operators sustain the loss reduction. With 73% of losses tied to TAR, the summer maintenance window shapes autumn availability, and the NSTA has flagged TAR planning as the area to watch. For buyers weighing renewal timing, steadier domestic output is one fewer source of upward pressure on the NBP curve, though import dynamics and storage still set the direction. Watch the 2026 stewardship reviews for whether PE moves closer to the 80% mark.