The IEA and OPEC are looking at the same global oil market and arriving at demand growth forecasts that differ by 65%.
When you look at the most recent monthly oil reports from each organization, the gap is hard to miss.
On 2026 oil demand growth, the IEA says:
Global oil demand is forecast to rise by 850 kb/d in 2026, up from 770 kb/d last year.
Meanwhile, OPEC says something different:
The global oil demand growth forecast for 2026 remains at a healthy 1.4 mb/d…
Those are two completely different understandings of the underlying growth and oil intensity of the global economy.
When you break it out by region, OPEC has a higher growth expectation for every single region.
The largest divergence comes in Asia Pacific, where OPEC expects oil demand to grow 660 thousand barrels per day (kbpd) this year relative to last year. For the IEA, that number is 450 kbpd.
Both organizations agree Asia Pacific is the biggest regional growth driver, very much in line with this week’s analysis at Foundations of Energy.
And interestingly, both agree that China’s demand will increase around 200 kbpd this year.
That means the IEA expects about 250 kbpd to come from the rest of Asia Pacific, while OPEC expects roughly 450 kbpd.
The difference is primarily in India, a market where forecasters consistently diverge because the pace of industrialization, vehicle fleet composition, and consumption data quality all remain genuinely uncertain. Vietnam, the Philippines, and Bangladesh contribute to the gap as well, but India is the headline.
We also see meaningful disagreement across the Americas, where OPEC sees 240 kbpd of growth while the IEA sees 110 kbpd. OPEC’s expectations for Africa, Eurasia, Europe, and the Middle East are each at least 50 kbpd higher than the IEA’s.
These deviations are a reminder that while we talk often about global oil supply and demand, we don’t know what those numbers are with great precision.
The US EIA, the IEA, OPEC, and the Energy Institute all produce views of global oil supply and demand.
And none of them agree.
Part of the discrepancy arises around global trade flows.
If the world is producing barrels that can’t make it to futures market delivery points because of sanctions or lack of infrastructure, do those barrels “count” the same way?
OPEC believes we’ve had an evenly supplied, if not undersupplied, oil market the past few years. The US EIA and IEA believe we’ve had consistent oversupplies.
This isn’t a minor footnote. It shapes how each organization models where we’re starting from, which then cascades into their demand outlooks.
For capital allocators and policymakers, the implication is uncomfortable: we’re operating with less visibility into the most consequential commodity market in the world than we might expect, given the presence of sophisticated reporting agencies.
Different communities of analysts can look at the same market and reach fundamentally different conclusions.
That persistent disagreement is one more reason why decisions about the energy transition (about when to invest, when to divest, and how fast to move) are harder than they look from the outside.
