OPEC lowers 2026 global oil demand growth forecast
Global oil demand will increase by 200,000 barrels per day year-on-year in 2026, according to the Organization of the Petroleum Exporting Countries’ October oil market report published on October 14, 2026, marking a significant downward revision from earlier projections.
OPEC Cuts 2026 Demand Growth Projections
Vienna-based reporting by Xinhua on October 14, 2026, detailed that the Organization of the Petroleum Exporting Countries lowered its global oil demand growth forecast for 2026 to 200,000 barrels per day. That figure cuts the group’s September estimate in half, down from a previously projected increase of 400,000 barrels per day. The downward revision reflects diverging consumption patterns between developed and developing economies.
Demand inside the Organisation for Economic Co-operation and Development is set to contract by roughly 200,000 barrels per day in 2026 compared to the previous year. Conversely, non-OECD nations will offset that decline by adding roughly 400,000 barrels per day of new demand over the same period.
Rebound Expected in 2027 as Reserves Fill
Despite the cooling pace expected through 2026, market momentum is slated to accelerate sharply the following year. OPEC forecasts that global oil demand will expand by approximately 2.6 million barrels per day year-on-year in 2027. That figure marks an upward revision from an earlier estimate of 2.4 million barrels per day.
The upcoming acceleration is driven by widespread national efforts to refill depleted strategic petroleum reserves. Haitham al-Ghais confirmed during his Riyadh address, as reported by Investing.com, that the currently delayed demand will materialize in 2027 as accumulated requirements begin to assert themselves across global markets.

Energy Sector Underinvestment Strains Infrastructure
The broader supply chain is already feeling the pinch of constrained capital expenditures. Al-Ghais stated during the WPC Energy Congress that the world has underinvested across upstream, midstream, and downstream energy sectors. According to the Investing.com coverage, those investment gaps—particularly in refining capacity—are visibly impacting current market operations.
Al-Ghais added that the global economy will require 23% more primary energy between now and 2050 to sustain projected economic growth.