Half a century ago, President Gerald R. Ford articulated a singular energy objective for the United States: achieving energy independence. His conviction led to the signing of the Energy Policy and Conservation Act in 1975, a landmark piece of legislation that, among other provisions, established the Strategic Petroleum Reserve (SPR). This initiative was born out of necessity, a direct response to the severe economic fallout of the 1973 oil crisis, which saw Arab members of OPEC impose an oil embargo against nations supporting Israel during the Yom Kippur War. The abrupt reduction in supplies exposed America’s growing reliance on foreign oil, leading to rampant stagflation. President Ford’s vision was to create an emergency buffer, a strategic defense against future supply disruptions and the crippling price surges they could ignite, ensuring the nation’s economic stability and the welfare of its citizens.
Today, the echoes of President Ford’s foresight resonate globally. A protracted conflict that erupted in the Middle East, its resolution still uncertain, has once again laid bare the vulnerabilities of global crude oil supply chains. The ensuing geopolitical and socio-economic turmoil, coupled with escalating prices, threatens stability in numerous nations. This volatile environment underscores a critical, emergent reality: the stockpiling of emergency oil reserves is arguably one of the most pressing needs facing countries worldwide in the modern era. The increasing frequency of crude supply disruptions—three major instances in the past six years alone, including the COVID-19 pandemic, the Russia-Ukraine war, and the current Middle Eastern conflagration—lends significant credence to this assertion. As Kenneth Medlock, Senior Director of the Center for Energy Studies at the Baker Institute for Public Policy, explains, "Strategic stocks are held to buffer supply shocks." He emphasizes that with energy security as the primary driver for maintaining these reserves, the current Middle Eastern conflict serves as a stark reminder that nations must prioritize the accumulation of emergency stockpiles. "The entire policy push behind strategic stocks is precisely for times like these."
The current crisis, often referred to as "Energy Crisis from the Blue Moons" in some reporting, escalated dramatically in late February following military actions initiated by the United States and its allies against Iran. The stated objectives of this operation, code-named "Operation Epic Fury," included neutralizing Iran’s missile capabilities, production facilities, and military infrastructure, with a paramount focus on preventing Iran from acquiring nuclear weapons. The initial expectation from the Trump administration was for a swift, decisive military intervention with minimal global repercussions. However, this assessment appears to have underestimated Iran’s capacity for asymmetric responses. The ensuing retaliatory barrage of missiles and drones across the Middle East has injected significant instability into a region that is the epicenter of global crude oil production. According to the International Energy Agency (IEA), this region accounts for approximately 30% of global oil output and 17% of natural gas production. Iran’s calculated targeting of critical oil facilities and refineries in allied nations like Saudi Arabia and Kuwait, while avoiding direct strikes on host countries for international forces, highlights a strategic approach to its counter-offensive.
A pivotal element of Iran’s strategy has been its ability to disrupt or threaten the closure of the Strait of Hormuz, a vital maritime chokepoint. This action has sent shockwaves through global energy markets. Sarah Emerson, President of the consulting firm ESAI Energy, observes, "President Trump seems to have started this conflict with limited knowledge of the Iranian regime or the critical geography of the Strait of Hormuz." She suggests that the disjointed handling of the conflict by Washington could prolong hostilities for months. In normal times, the Strait of Hormuz, a relatively narrow waterway connecting the Persian Gulf to the Gulf of Oman, is a critical artery for global trade. However, during periods of conflict, its strategic significance intensifies. It is one of the world’s busiest shipping lanes, facilitating the transit of roughly 20% of global oil consumption.
In 2025, an estimated 20 million barrels per day of crude oil and refined products traversed the Strait of Hormuz. Of this, approximately 15 million barrels per day were crude oil, representing about 34% of global crude oil trade. A significant portion of this crude, nearly 44% of the total passing through Hormuz, was destined for Asian markets, primarily China and India. For major oil-producing nations in the region, including Saudi Arabia, the United Arab Emirates (UAE), Kuwait, Qatar, Iraq, Bahrain, and Iran itself, the Strait of Hormuz is the principal export route for their crude oil. Furthermore, the UAE and Qatar rely on this waterway almost exclusively for their liquefied natural gas (LNG) exports, which constitute 19% of the global LNG trade.
The sheer volume of oil and gas transiting the Strait of Hormuz, coupled with the limited availability of viable alternative routes, means that any disruption here triggers a supply shock of unprecedented magnitude. This shock is estimated to be approximately 18 times larger than the initial disruptions witnessed at the outset of the Russia-Ukraine conflict in 2022. During the early weeks of the current Middle Eastern conflict, oil flows through the Strait of Hormuz plummeted by as much as 97%, impacting an estimated 2,000 tankers.
The severe disruption to crude oil flows has had catastrophic consequences for global oil markets, with devastating ripple effects on the broader global economy. Prior to the conflict, crude oil prices averaged around $65 per barrel. By April, this figure had surged to approximately $115 per barrel. The situation has been further complicated by the UAE’s decision to withdraw from OPEC, citing a desire to pursue its "national interests" and chart its own course in crude production. As a member for six decades, the UAE accounts for about 15% of OPEC’s production capacity. Adding to the market’s instability is the ongoing U.S. blockade of Iranian ports, a standoff that could persist for months unless a diplomatic resolution is reached. By the end of April, crude oil prices had surpassed the $120 per barrel mark, a level not seen since 2022. Adi Imsirovic, a guest lecturer at the University of Oxford, warns, "If shipping through Hormuz is not allowed for another four to six months, we can expect oil prices to rise over $150 a barrel."
A sustained crude oil price of $150 per barrel would represent an unbearable strain on the global economy. International financial institutions, including the International Monetary Fund (IMF) and the World Bank, have already revised their growth forecasts downward, citing the conflict’s impact on economic momentum. The IMF, which had previously projected global growth at 3.4% for the year, now anticipates a contraction to 2.5% with inflation reaching 5.4%, assuming the conflict continues for 60 days. In a more severe scenario, where energy supply disruptions extend into the following year, global growth could plummet to 2% for both years, with inflation exceeding 6%. Indermit Gill, World Bank Chief Economist, notes that the conflict is inflicting cumulative damage on the global economy, beginning with higher energy prices, followed by increased food costs, and ultimately, escalating inflation. The potential for extreme waves, including sharp interest rate hikes and elevated borrowing costs, looms large. "The poorest people, who spend the highest share of their income on food and fuels, will be hit the hardest, as will developing economies already struggling under heavy debt burdens. All of this is a reminder of a stark truth: war is development in reverse," Gill stated.
In response to the unprecedented disruption of crude oil supplies, nations worldwide have resorted to a range of urgent coping mechanisms aimed at averting civil unrest and mitigating the impact of soaring prices and critical shortages. These measures include tax cuts, declarations of national emergencies, encouragement of remote work, restrictions on official travel, and the closure of educational institutions to conserve energy. By the end of April, approximately 40 countries had implemented some form of tax reduction, from slashing Value Added Tax (VAT) and excise duties to entirely abolishing petroleum levies. Medlock notes, "Most economies have used tax abatements to control price volatilities," characterizing these cuts as "classical cases of desperate times calling for desperate measures."
These short-term interventions have provided some relief, particularly for less developed and frontier economies. In Kenya, for example, domestic super petrol prices reached an all-time high of KSh206.97 ($1.59) in April, up from KSh178.28 ($1.37) in March, due to global shocks. With opposition parties calling for demonstrations, the government responded by reducing VAT from 16% to 8%, bringing prices down to KSh197.60 ($1.52). However, this measure came at a significant cost to the government, which stands to lose an estimated KSh12.9 billion ($100 million) in revenue over three months.
For larger and emerging economies, a more proactive approach has involved the release of emergency strategic reserves into the market. Historically, the release of SPRs has been infrequent, typically occurring only during extreme circumstances such as wars, pandemics, adverse weather events, natural disasters, and severe economic crises. These emergency stocks are managed by governments, with some inventories also accumulated by private entities under government mandate and oversight. Data from the U.S. Energy Information Administration (EIA) indicates that by the end of the previous year, global emergency oil inventories totaled approximately 2.5 billion barrels. China, the United States, and Japan held the largest stockpiles. While Beijing has historically been discreet about its inventory levels, estimates suggest its stockpile approached 1.4 billion barrels, derived from third-party and official data on imports, exports, refining, and oil inventories. The U.S. held 413 million barrels, and Japan’s inventories were estimated at 263 million barrels. Other significant holders included Europe with around 179 million barrels, Saudi Arabia with 82 million barrels, South Korea with 97 million barrels, Iran with 71 million barrels, the UAE with 34 million barrels, and India with 21 million barrels.
The International Energy Agency (IEA), an organization requiring member states to maintain specific oil stocks and coordinate their release, provides a clear overview of global stockpiles. Collectively, its 32 members hold over 1.2 billion barrels, with an additional 600 million barrels of industry stocks held under government obligation. Since its inception in 1974, the IEA has coordinated emergency stock releases by its members six times. Notably, in 2011, members collectively released 60 million barrels in response to supply shortages caused by the Libyan civil war. In 2022, the IEA coordinated two releases totaling 180 million barrels to counter supply disruptions and price spikes stemming from Russia’s invasion of Ukraine.
However, the coordinated release necessitated by the current Middle Eastern conflict dwarfs all previous interventions. A fortnight after the war erupted, with the world grappling with the most severe crude supply disruption in decades, it became evident that strategic reserves were the primary mechanism to cushion the global economy from significant damage. Consequently, IEA members unanimously agreed to make 400 million barrels available to the market, the largest coordinated oil stock release in history, which the IEA described as "decisive and unprecedented." Fatih Birol, IEA Executive Director, remarked following the action on March 11, "Oil markets are global so the response to major disruptions needs to be global too." Birol has indicated that the agency stands ready to implement further releases if the situation warrants it, though the hope is that such measures will not be necessary. "I very much hope we don’t need to do it, but if it is – if it is needed, we are ready to act immediately," he stated during an Atlantic Council forum.
The United States has been a significant contributor to this coordinated effort, agreeing to release 172 million barrels from its SPR. By the end of April, the U.S. had released approximately 80 million barrels, with Europe being the primary recipient market. These releases are conducted on an exchange basis, where oil majors and traders purchase the stocks with the expectation of returning equivalent supplies at a later date. In one of the initial contracts awarded in March, the U.S. Department of Energy made 45 million barrels available to the market, with an agreement to receive 55 million barrels in return. Alongside the U.S., Japan and the United Kingdom have also been proactive, contributing 36 million and 13 million barrels, respectively. Emerson asserts, "Making the strategic stocks available to the market has been the right move." She highlights a distinct characteristic of the current crisis compared to previous ones: for the first time, due to the closure of the Strait of Hormuz, Saudi Arabia has been unable to fulfill its traditional role of increasing production to offset global shortages. "In most of the other past crises, we often saw Saudi crude oil production increase. It has not been the case in the current crisis."
The history of Strategic Petroleum Reserves (SPRs) dates back to proposals in the 1940s, driven by the critical role of oil in national security and military operations following World War II. However, tangible infrastructure investment for stockpiling began in the 1970s, with the U.S. as a primary example. The harrowing experiences of 1973 prompted significant investment in complex underground storage caverns within salt domes along the Texas and Louisiana Gulf Coasts. These salt caverns, chosen for their cost-effectiveness, security, and proximity to refineries and distribution points, possess a storage capacity of up to 727 million barrels. Prior to the coordinated release in March, SPR stocks had been built up to over 415 million barrels. The U.S. SPR has reached its full authorized capacity only once, in December 2009, when the recorded inventory hit 726.6 million barrels.
President Ford’s original objective was “energy independence.” Today, however, as evidenced by the current crisis, the role of emergency stocks has evolved significantly. Governments worldwide are utilizing SPRs not only to stabilize supply and mitigate price surges but also to combat inflation and, more critically, as instruments of geopolitical influence and self-defense against external aggression. China serves as a prime example. As the world’s largest crude oil importer, averaging 11.6 million barrels per day in 2025, with Russia, Saudi Arabia, Malaysia, Iraq, and Brazil as its primary suppliers, China views the accumulation of strategic stocks as a matter of existential importance. Its economy is deeply reliant on oil, and its military requires an uninterrupted fuel supply in potential conflict scenarios, such as a hypothetical confrontation with the U.S. over Taiwan.
Medlock observes, "While the release of reserves has helped avert dire impacts, they are not a panacea for long-term supply and price stability." The emergency stocks have undoubtedly provided crucial relief. With global crude oil consumption at approximately 100 million barrels per day, the release of 400 million barrels might appear modest. However, experts contend that without these strategic reserves, price spikes could have been far more severe. Indeed, crude prices saw a decline of $18 per barrel shortly after the IEA’s announcement on March 11. Furthermore, SPR releases have helped temper inflationary pressures, particularly in net oil-importing countries like India, which imports about 90% of its oil. Despite an increase in its key inflation rate from 2.75% in January to 3.4% in March, it has remained below the central bank’s 4% target.
Crucially, SPRs have helped prevent product shortages in many countries, especially in developing nations lacking the resources to build their own strategic reserves. Amassing stockpiles is an expensive and lengthy undertaking. The U.S., for instance, has invested a staggering $25.7 billion in its SPR, with $5 billion allocated to infrastructure and $20.7 billion for crude oil purchases. As a major oil producer, the U.S. purchases crude from its own companies. For net oil importers, the financial burden is considerably higher, exacerbated by the cost of replenishing stocks when crude prices are elevated. The current Middle Eastern conflict underscores the indispensable role of emergency oil inventories in mitigating global supply shocks. As global uncertainties become the norm, the imperative to accumulate and strategically deploy these reserves is likely to grow even more urgent.
