• OPEC+’s capacity-assessment exercise, critical for setting 2027 production baselines, has been delayed because some members have not submitted required data.
  • Sources expect the review to be completed by mid-November, potentially leaving less time for contentious year-end negotiations on quotas.
  • The delay does not alter current output targets, but it raises the risk of disputes over future market share and the handling of remaining supply cuts.

Data Submissions Lag

An OPEC+ exercise to assess each member’s maximum sustainable production capacity (MSC) has slipped behind schedule, according to people familiar with the matter, as several countries have yet to provide the necessary data. The delay pushes the expected completion date to mid-November, from an earlier target of September.

The assessment is meant to establish baselines for 2027 quotas, determining how much each country is allowed to pump. OPEC defines MSC as the maximum crude volume that can be brought online within 90 days and sustained for a year, including planned maintenance. Without complete submissions, the technical review cannot be finalized.

The delay does not itself change current production targets, but it compresses the timeline for ministers to agree on 2027 baselines before the alliance’s late-year policy meetings. Quotas are calculated from these baselines, making the exercise a key determinant of future market share.

Near-Term Policy Separate

The delay comes as OPEC+ appears set to keep November output targets unchanged, with the seven core producers—Saudi Arabia, Russia, Iraq, Kuwait, Algeria, Kazakhstan, and Oman—leaning toward maintaining current levels. No final decision has been made, and the group is scheduled to meet online on October 4, with the Joint Ministerial Monitoring Committee also set to review market conditions.

The group completed the phased rollback of a 1.65 million-barrel-per-day cut in September, but roughly 2 million bpd of cuts still cover most members through end-2026. The capacity review is intended to guide the eventual treatment of those remaining restrictions, making the November completion target a critical milestone.

Tensions Over Baselines

Capacity disputes have historically been fraught within OPEC, as they determine relative market share as much as they measure engineering capability. A recent precedent was Angola’s departure from the group in 2024 after it was assigned a target below its desired level. The current review, approved in late 2025 as an annual mechanism, was designed to reward members that invest in upstream capacity, according to Saudi Energy Minister Prince Abdulaziz bin Salman.

The process is complicated by geopolitical and technical factors. Russia, a key OPEC+ member, is outside the U.S.-consultant assessment process, alongside Venezuela, and its capacity faces uncertainty from sanctions. Iran’s 2027 baseline will be based on average production in August–October 2026 using OPEC secondary-source data, making current disruptions particularly consequential. Gulf producers have been trying to boost exports disrupted by the Iran war, while actual production remains below targets.

The policy debate also unfolds against sharply divergent supply-demand outlooks. The International Energy Agency projected a 2.4 million-bpd surplus in 2025 and 4.1 million bpd in 2026, while OPEC expects a more balanced market. That disagreement makes the choice of future baselines and the pace of supply restoration politically harder.

Market Implications

For traders, the delayed quota baseline adds uncertainty to the 2027 supply path, though it does not remove barrels from the market immediately. Producer revenues are at stake: countries that have invested to raise capacity have a strong fiscal interest in a higher assessment, which could support more exports. A lower assessment could constrain monetization of capital-intensive projects.

Importers and consumers face the risk of policy uncertainty and potential price volatility. Refiners, airlines, and transport firms in oil-importing economies will monitor the mid-November completion target and subsequent ministerial negotiations for signals on supply availability.

OPEC+ has not publicly commented on the delay. Sources spoke on condition of anonymity because the discussions are private. The group’s next policy meeting is scheduled for October 4, when November output levels will be considered.