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The Energy Shock & Disproportionate Inflation

Jan Gunash · Co-Founder & CGO · June 15, 2026

The best questions are not always the comfortable ones. Like: when the price of oil rises by a known amount, how much inflation does that actually produce, and why does the answer differ so dramatically depending on which country you live in? And when the strategic buffer designed to absorb that shock is at half capacity while the disruption that triggered it remains unresolved, what do the numbers say about how much more the world can absorb?

These questions have calculable answers this week. U.S. consumer inflation hit a three-year high of 4.2%. The World Bank projects developing economy inflation a full percentage point higher than before the conflict. The Strait of Hormuz has been effectively closed for more than three months. This edition works through the actual arithmetic of how a closed strait becomes a higher grocery bill, why that arithmetic is different in Lagos than in London, and why the data to do this calculation is not reaching the people living through its result.

The Pass-Through Arithmetic

Start with the mechanism, because the mechanism is where the data lives. Economists measure how oil prices become consumer prices using a figure called the pass-through elasticity. The most widely cited estimate, from an IMF study of 72 economies, is that a 10% increase in global oil prices raises domestic headline inflation by about 0.4 percentage points on impact, with the effect fading over roughly two years (source: IMF).

Apply that to the current shock. Brent crude rose from $71 per barrel in February to a peak of $117 in April, a 65% increase. Using the IMF elasticity, that implies roughly 2.6 percentage points of direct headline inflation impact globally on impact, before second-round effects. That is the raw arithmetic of the shock: a 65% oil move, multiplied by the pass-through coefficient, produces a headline inflation contribution in the range of 2.6 points at the global average.

The Federal Reserve's structural modelling adds the second-round detail. A 10% rise in real oil prices raises U.S. headline inflation by about 0.15 percentage points in the first year through direct channels, with an additional 0.06 percentage points of core inflation as the cost works through domestic goods and import prices (source: Federal Reserve). The direct effect is fast and visible at the pump. The second-round effect is slower, embedded in the price of everything that was shipped, processed, or manufactured using energy. This is why the May CPI number understates the shock still to come.

What the Data Actually Shows

The pass-through elasticity is an average. The reality is that the same oil shock produces wildly different outcomes depending on where it lands. To understand the scale of that divergence, we ran an original analysis on Panthaion combining IMF World Economic Outlook inflation projections with World Bank energy trade data across the global economy.

The intuitive expectation is that countries importing more energy should face higher inflation from an oil shock. The data does not support that as a clean explanation. The correlation between energy import dependence and projected 2026 inflation across major economies is effectively zero.

The chart ranks major economies by their projected 2026 inflation. The economies clustered at the low end, including Thailand, China, Japan, and France, span both energy importers and exporters. So do the economies at the high end. There is no clean sorting of importers toward the top and exporters toward the bottom. Japan and South Korea import almost all of their energy and remain among the lowest-inflation economies in the world. Norway and Saudi Arabia export energy and sit in the middle of the range.

What the data shows instead is a structural divide. Advanced economies that import energy face projected 2026 inflation averaging around 2.6%. Emerging economies that import energy face roughly 8%. That is a threefold gap produced by the same global shock. The difference is not how much oil a country buys abroad. It is how much capacity it has to absorb the price of that oil once it arrives.

The full methodology and interactive version of this analysis are published on Panthaion at panthaion.org/p/2026-global-inflation.

Why the Divergence Happens

Three structural factors explain why the same oil shock lands so differently, and the pass-through arithmetic makes each one precise.

First, energy is a larger share of the consumption basket in poorer countries. When a household spends 15% of its income on fuel and energy rather than 4%, the same percentage increase in oil prices produces nearly four times the impact on that household's cost of living. The pass-through elasticity for energy-import-dependent emerging markets runs well above the global average.

Second, currency effects compound the shock. Oil is priced in dollars. When investors pull back from developing countries during a crisis, those currencies weaken against the dollar, which means the local-currency price of oil rises by more than the dollar price alone (source: UNCTAD). A country whose currency falls 10% against the dollar experiences the oil shock twice, once in the dollar price and once in the exchange rate. For the most vulnerable economies, the oil shock is a currency shock wearing an energy costume.

Third, monetary policy credibility determines how much of the shock becomes embedded. Economies with credible central banks and anchored inflation expectations absorb the price increase without it spiralling. Economies without that credibility see the shock feed into wages, prices, and expectations in a self-reinforcing loop. The economies with the highest projected inflation, including Egypt, Pakistan, and Bangladesh, are distinguished less by how much energy they import and more by how stretched their macroeconomic buffers were before the shock arrived.

The Concrete Comparison

Put the numbers side by side and the inequality of the shock becomes clear.

A U.S. household, with energy at roughly 7% of its consumption basket, low fuel taxes, domestic production insulation, and Strategic Petroleum Reserve support, experiences the oil shock as a contribution of a few tenths of a percentage point. The IMF projected full-year U.S. inflation at roughly 3.2% in April, though the actual May reading has since reached 4.2%, already running above forecast as the shock outpaces the models.

A household in an energy-importing emerging market, with energy at 15% or more of its basket, a currency weakening against the dollar, and no strategic reserve to draw on, experiences the same global oil price increase as a substantially larger hit. The World Bank projects developing economy inflation averaging 5.1% in 2026, a full percentage point higher than expected before the war (source: World Bank). The IMF's severe scenario quantifies the tail: if oil prices stay 100% above the January baseline through 2027, one-year-ahead inflation expectations rise by 100 to 130 basis points in emerging markets excluding China (source: IMF). For the 3.4 billion people who live in countries already spending more on debt than on health or education, that combination is the difference between managing and not (source: UNCTAD).

The Buffer That Is Running Low

The U.S. Strategic Petroleum Reserve sits at 374.2 million barrels, approximately 51% of its authorised capacity, after back-to-back record weekly drawdowns of 9.92 million and 8.6 million barrels in May (source: 24/7 Wall St / EIA). The maximum drawdown capacity is 4.4 million barrels per day, and oil requires about 13 days to reach U.S. markets after a release order.

The SPR is approaching the level at which roughly 70 million barrels remain as the functional floor, the minimum needed to maintain the physical infrastructure of the salt dome storage facilities. The Department of Energy's 172-million-barrel exchange program lets companies borrow oil now and repay it with an 18 to 24% premium over 12 to 24 months, which means the reserve will remain at historically low levels through most of 2027 (source: DOE / InvestingLive).

The buffer arithmetic matters for the inflation forecast. SPR releases are part of why Brent fell from $117 in April to $107 in May, the first monthly decline since December 2025. But once the reserve approaches its functional floor, the price-suppressing effect of releases disappears, and any further disruption transmits directly into prices with no buffer to absorb it. The Dallas Fed finds moderate CPI effects if the closure is short, but if oil reaches $130 per barrel and stays there through end of 2026, around half of surveyed firms reported moderate to significant input cost increases (source: Atlanta and Dallas Fed).

The Data Infrastructure Gap

Here is the part that ties to everything this newsletter has covered since March. Every number in this edition is publicly available. The IMF pass-through elasticity is in a published working paper. The World Bank inflation projections are in the Commodity Markets Outlook. The SPR level is in the weekly EIA report. The currency movements are in real-time market data. The pieces all exist.

What does not exist is the infrastructure to assemble them into an answer to the question an actual household is asking: how much more will my cost of living rise, for how long, and what would make it worse? A household in Pakistan or Egypt facing a compounding shock of oil price, currency depreciation, and energy basket share has no accessible tool that translates the global data into a personal forecast. The data that would let a small business in the eurozone model its energy cost exposure through 2027 is spread across IMF scenarios, ECB pass-through studies, and SPR replenishment schedules that are not designed to be read together.

Our Panthaion analysis demonstrates the point by doing the opposite. Two public datasets, combined in a single session, produce a clear and original picture of who pays what when a chokepoint closes. The fact that this analysis is not routinely produced and made public is the data gap, not a limitation of the data itself.

The Path Forward

The pass-through arithmetic should be public infrastructure. A standardised, regularly updated calculation showing how the current oil price translates into headline inflation by country, accounting for energy basket share, currency movement, and tax structure, would let governments, businesses, and households understand their actual exposure rather than reacting to a headline CPI number with no context.

The SPR replenishment timeline should be public. The functional floor should be a published standard rather than an industry estimate. The IMF and World Bank inflation scenarios should be presented alongside the personal and local data that makes them actionable rather than abstract.

The price of closing the Strait of Hormuz is a 4.2% inflation rate in the United States, a projected 5.1% across developing economies, a reserve at half capacity, and a second-round cost wave that the data says is still building. The arithmetic is knowable. The question is whether the people paying the bill will ever be given the tools to see it coming.

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Want to contribute your thoughts or findings in data and AI with climate, energy, or nature? Message Jan Gunash on LinkedIn or send an email to jgunash@projectcoeus.com.