Why Oil Prices Are Rising: What's Happening to Global Oil Reserves

Global oil stockpiles are shrinking faster than at any time on record. The Energy Information Administration—the U.S. government agency that tracks oil supply—is forecasting that reserves will drop by 8.5 million barrels per day in the second quarter of 2026. The agency also projects Brent crude (the international benchmark price) will average $106 per barrel in May 2026. These numbers matter because shrinking supplies push prices up, which eventually shows up at the gas pump and in heating bills. According to the International Energy Agency, global reserves fell by 246 million barrels in March and April alone.

Why Reserves Are Shrinking So Fast

Oil supply across the world is under stress right now. The IEA projects that global oil production will drop by 3.9 million barrels per day in 2026, bringing total output to 102.2 million barrels per day. When the world produces less oil than it consumes, reserves get drained. Think of it like spending from your savings account without adding to it—eventually, the account runs low.

There's one wrinkle in the picture. U.S. crude inventories actually rose by 1.4 million barrels recently, when analysts had expected them to fall by 2.2 million barrels, according to EIA data. This suggests that while global reserves are falling, some regions are temporarily stockpiling oil because of refinery bottlenecks and transportation disruptions. The global shortage is real, but it's uneven across different parts of the world.

New Supply Is Coming—But Not Yet

OPEC, the organization of major oil-producing nations, is more optimistic about long-term supply. The organization forecasts that non-OPEC countries will produce significantly more oil: rising from 51.7 million barrels per day in 2023 to 58.8 million barrels per day by 2029. That's a 7.1 million barrels per day increase over six years.

Most of this additional supply is expected to come from U.S. shale fields, deepwater drilling off Brazil, and Canadian oil sands. But these projects take time to build and money to finance. There's real uncertainty about when—or if—all that oil will actually reach the market.

A Temporary Crisis, or a Long-Term Shift?

The broader context here is worth pausing on. We've seen oil inventory cycles before, especially during the 2014–2016 downturn, which created wild price swings. The current drawdown is just as intense, but the market has changed. These days, financial traders—not just oil companies and refineries—are betting heavily on oil futures contracts. This extra speculative money can amplify price moves when inventory reports come out, creating feedback loops between the physical oil market and the paper market for futures contracts.

What Happens Next

Inventory rebuilding is expected to begin in 2025. The IEA forecasts that reserves will start growing by an average of 720,000 barrels per day in 2025, accelerating to 930,000 barrels per day in 2026. This assumes that supply constraints ease and that OPEC increases production as planned.

When inventory levels start rising again, they typically push prices down. But this transition—from rapid depletion to rebuilding—could be bumpy. The oil market is watching weekly inventory data releases more closely than ever, and financial traders are quick to react. Even small surprises in these reports can move prices noticeably.

For anyone paying attention to energy costs or thinking about investments tied to oil, the key number to watch is how fast reserves are changing week to week. The absolute amount in storage matters less than the direction and speed of movement.