Econ Blog
Global oil supply and demand
When global oil consumption runs ahead of production, prices follow. When production catches up, prices ease. Here's the chart that shows it directly.
If you've ever stared at a WTI price chart and wondered why crude spiked or collapsed in a given month, the answer is almost always in one number: the gap between global consumption and global production. The EIA publishes that monthly, in millions of barrels per day, and it tracks the WTI price more cleanly than any single geopolitical event does.
This post pairs the supply/demand gap with WTI spot prices on a single chart. The relationship is not subtle.
MMbbl/day as of September 1, 2026
Monthly average September 1, 2026
2016 to present, EIA STEO + FRED WTI
Red bars are months when consumption exceeded production, a supply deficit, bullish for prices. Green bars are months of production surplus, bearish for prices. The dark purple line is the 4-month moving average of the gap; the yellow-green line is WTI on the right axis. Watch how WTI inflects with (and slightly lags) the trend in the gap.
What the chart is really showing
The EIA's Short-Term Energy Outlook publishes monthly estimates of global petroleum production and consumption. Subtracting one from the other gives you a single number per month: the supply balance.
- Positive (red): consumption exceeded production. Inventories are drawing down somewhere. Bullish for prices.
- Negative (green): production exceeded consumption. Inventories are building. Bearish for prices.
The 4-month moving average filters the noise. The trend in the SMA is what WTI tracks. Single months can mislead; the rolling average rarely does.
The two lines move together most of the time, because global GDP drives both. The COVID collapse is the most dramatic divergence: consumption fell about 18.4 MMbbl/day from its prior high into the April 2020 bottom while production took longer to follow. The supply-balance chart above is just the gap between these two lines.
What SMBs do with this
For most small businesses, oil prices feed in three places:
- Fuel costs. Direct exposure for transportation, delivery, field service, and trades. Already covered in our retail-gasoline post.
- Materials costs. Anything petroleum-derived (plastics, packaging, asphalt, lubricants) moves with crude on a 6-18 month lag.
- Logistics costs. Freight rates ripple from diesel and bunker fuel into trucking, rail, and ocean shipping.
The supply balance is a leading indicator for all three. When the red bars start stacking up and the SMA trends positive, expect upward pressure on every petroleum-linked cost line in the next two quarters.
Related analysis
- Retail gasoline vs CPI energy: Where the crude balance shows up at the pump and in the energy price index.
- CPI vs Core PCE: How energy costs feed the headline inflation figure the Fed looks through.
- Real GDP growth since 2000: The demand side that drives petroleum consumption over the cycle.
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