Oil Glut 2026: How Big Will It Be? IEA, OPEC, and Sanctions Explained (2025)

A Looming Oil Crisis: Unraveling the Mystery of the Oversupply

The oil market is on the brink of a potential crisis, and the world is scrambling to understand the magnitude of the issue. For months, experts have been anticipating a significant oversupply, but the true size of this glut remains shrouded in uncertainty. As we delve into this complex situation, we uncover a web of factors that make predicting the future of oil prices a challenging task.

The consensus is clear: an oversupply is coming. However, the estimates of its size vary wildly, from predictions of a record-breaking super-glut to more conservative forecasts of modest inventory increases during the traditionally weaker demand period in the first quarter.

But here's where it gets controversial... If the oil market were as simple as supply and demand, we'd have a clearer picture. However, the market is far from straightforward, and the estimates of the glut's size are more like educated guesses, filled with uncertainties and hypothetical scenarios.

The International Energy Agency (IEA) sounded the alarm in its October report, warning of a larger-than-expected global oil oversupply due to surging supply and subdued demand. The Middle East's increased production, coupled with robust flows from the Americas, led to a massive 102 million-barrel surge in September, the largest increase since the pandemic, according to the IEA.

And this is the part most people miss... As these vast volumes of oil move from water to major onshore hubs, crude stocks are expected to surge, while NGLs (Natural Gas Liquids) start to drop. This shift could have significant implications for the market.

However, a week after the IEA's report, the situation took an unexpected turn. The United States imposed sanctions on Russia's top oil producers and exporters, Rosneft and Lukoil, throwing all previous estimates into question. With a wind-down period until November 21, the impact of these sanctions is uncertain, especially as they are seen as a tool by the Trump Administration to push Russia towards peace talks in Ukraine.

But how big is this oversupply? Rosneft and Lukoil have been exporting around 3 million barrels per day, accounting for approximately 3% of the global supply. Despite this, Goldman Sachs expects a limited impact on global oil imports, as core OPEC members have spare capacity to offset some of the shortfall.

Moreover, trade networks often adapt and reorganize in the aftermath of sanctions, as highlighted by Daan Struyven, Head of Oil Research at Goldman Sachs. The bank remains bearish on oil prices in the short term due to significant inventory builds in recent months.

As the sanctions loom, global trade flows are shifting once again. Russia's key buyers, China and India, are rushing to replace sanctioned barrels with alternative supplies or purchase Russian oil through non-sanctioned entities. Chinese state-owned oil giants have reportedly suspended purchases of Russian oil in the short term, while independent refiners are likely to continue seeking Russian crude but with increased caution.

Indian refiners, in particular, are being extremely careful in these early days of sanctions, especially as India seeks to reduce its massive 50% tariff on exports to the U.S.

Even with the sanctions in place, the World Bank forecasts a significant expansion of the oil glut in 2025, expecting it to rise to 65% above the 2020 high next year. With slowing oil demand growth due to EV sales and stagnating consumption in China, the World Bank predicts Brent crude oil prices to fall to a five-year low of $60 on average in 2026, down from $68 this year.

The decision by OPEC+ producers to pause their reversal of production cuts in the first quarter of 2026 is seen as a sensible move by ING's commodities strategists. The market is expected to be in peak surplus through March next year, but the recent U.S. sanctions on Russia add a layer of uncertainty to the surplus's size.

If these sanctions disrupt Russian oil flows, it could reduce the expected surplus early next year, giving OPEC+ an opportunity to reconsider its production policy in early 2026. Despite this, OPEC and its key members publicly dismiss the glut narrative, with the UAE's Energy Minister stating that they do not expect an oversupply as demand remains solid.

The pause in production hikes is a sign that OPEC+ is aiming to prevent a price slump early next year, especially if inventory builds accelerate. It also provides time for OPEC and its allies, led by Russia, to assess the impact of U.S. sanctions on Russian producers and how the market might adapt to changing trade flows.

As the world watches this unfolding drama, one thing is clear: the oil market is far from simple, and the size of the looming oversupply remains a controversial and uncertain topic. What are your thoughts on this complex situation? Do you think the sanctions will have a significant impact on the oil market, or will the market adapt and find a new equilibrium? We'd love to hear your insights in the comments below!

Oil Glut 2026: How Big Will It Be? IEA, OPEC, and Sanctions Explained (2025)
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