If the U.S. produces more oil than it exports, why do prices still rise here?

At first glance, it seems puzzling. The United States is now one of the largest oil producers in the world and in many periods produces more petroleum than it consumes. If that is the case, students naturally ask: shouldn't domestic prices be insulated from global shocks?

 

The short answer is no, because oil markets are fundamentally global.

 

Crude oil is a globally traded commodity. Even if the United States produces a large volume of oil, the price that producers receive—and refiners pay—is determined largely in the global benchmark markets, particularly Brent and West Texas Intermediate (WTI). If a supply disruption occurs in the Middle East, or if global demand increases in Asia or Europe, prices tend to adjust worldwide. American producers can export oil, and American refiners can import oil, so domestic prices remain tightly linked to international markets. In economic terms, oil is part of an integrated global market, not a closed domestic one.

 

Another factor students often overlook is the role of the U.S. Strategic Petroleum Reserve (SPR). The SPR is the world's largest emergency stockpile of crude oil, created after the 1970s oil embargo to help cushion supply disruptions. The reserve stores crude oil in large underground salt caverns along the Gulf Coast of Texas and Louisiana, where the geology allows enormous quantities of oil to be stored safely and relatively cheaply.

 

According to the Department of Energy, these caverns were created by dissolving salt formations deep underground and can hold hundreds of millions of barrels of crude oil. The entire system has an authorized capacity of about 714 million barrels and currently holds a little over 400 million barrels, meaning it is well below full capacity.

 

The SPR acts as a strategic buffer, not a daily supply source. Oil stored there cannot immediately offset large market movements because it can only be withdrawn at a limited rate and is intended primarily for major disruptions such as wars, natural disasters, or severe supply shocks. Even when releases occur, they mainly help stabilize markets temporarily rather than permanently change the underlying global supply-demand balance.

This also illustrates an important limitation of many risk models used in finance. Traditional Value-at-Risk (VaR) approaches often assume that price movements follow relatively stable statistical distributions. But commodity markets—especially oil—are heavily influenced by global geopolitical events, policy decisions, and sudden supply disruptions. When an unexpected event shifts expectations about global supply or demand, prices can move far more dramatically than a normal distribution would predict. In statistical terms, these markets exhibit fat tails, meaning extreme price changes occur more frequently than simple models assume. The global integration of oil markets, combined with the possibility of large supply shocks, is one reason risk managers often complement traditional VaR models with alternative approaches that better account for tail risk.

 

Markets that depend on geopolitics rarely behave like the tidy bell curves we put in our spreadsheets.