Global Refinery Throughputs Decline in September 2026
Seasonal maintenance in OECD nations and rising shipping costs slowed global crude processing last month.
Updated on Oct. 20, 2026 in Oil and Gas
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Global refinery crude oil throughputs fell in September 2026 as facilities across OECD countries began scheduled seasonal maintenance. The downturn was further exacerbated by increased logistical costs for energy transport.
Why it matters
The reduction in throughputs, driven by routine seasonal adjustments, directly impacts the availability of refined petroleum products. Higher shipping expenses continue to place significant pressure on refining margins, particularly in Asian markets.
Shipping costs for crude transport from the Mideast increased by as much as $40 per barrel during the month. These rising expenses directly contributed to a decline in refining margins across Asia.
The players
OECD
The Organisation for Economic Co-operation and Development is an intergovernmental organization that promotes economic growth and world trade.
The details
Seasonal maintenance cycles in OECD countries effectively limited the global supply of finished products throughout September. Concurrently, high shipping rates from the Mideast created a cost burden that squeezed the profitability of refineries operating in Asian markets.
Timeline
September 2026: Global refinery throughputs declined and Asian margins fell.
Market Landscape
This decline follows the established pattern of seasonal maintenance shutdowns tracked by the International Energy Agency. The trend reflects a predictable cyclical shift in industrial operations that frequently impacts global commodity flows.
The tightening of refinery throughputs and higher shipping costs may lead to volatility in the pricing of refined fuel products for consumers. These industry-wide pressures can result in localized supply variations that affect pump prices for households and businesses.
The takeaway
Maintaining awareness of seasonal industrial cycles helps market participants anticipate predictable dips in product output. Consumers should monitor regional fuel price fluctuations as supply chain costs continue to impact global refining margins.
Further reading
For broader trends in the energy sector, explore the Oil and Gas section.
Live Poll
Do you expect higher refinery costs to lead to significantly higher fuel prices for your household?
