Oil Falls Below US$90/b as US-Iran Pause Calms Energy Markets

Global energy price volatility from US-Iran geopolitical tensions presents dual fiscal and strategic pressures for Mexico. While higher international crude prices initially increase oil revenues, PEMEX’s declining export volume of 418,200b/d limits revenue gains, while expanding fuel import subsidies (IEPS) cost approximately MX$2.5 billion weekly. Concurrently, regional energy security needs and North American nearshoring targets are accelerating demand for grid expansion, natural gas transition infrastructure, and renewable power for industrial operations.q

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Global crude oil prices declined sharply on June 27, 2026, following indications that a pause in strikes between the United States and Iran could create room for diplomatic negotiations.

Brent crude dropped more than 9% to a session low of US$87.59/b, reversing a surge that pushed the benchmark above US$100/b last week. By June 27 afternoon, Brent traded at US$90.60/b, representing a single-day decline of over 6%.

The price movement followed statements from the US ambassador to the United Nations confirming that military operations against Iran had paused for a second consecutive night to facilitate discussions. An Iranian military spokesperson confirmed on Sunday that retaliatory strikes in the region had also been paused.

The initial outbreak of hostilities between the United States and Iran led to the closure of the Strait of Hormuz, a maritime transit point that typically handles approximately 20% of global oil and liquefied natural gas shipments. Prices previously normalized near US$70/b in June after both nations signed a memorandum of understanding (MoU) to suspend military actions and open the strait. However, the subsequent breakdown of that agreement renewed supply concerns.

Compounding market pressures last week, Houthi forces in Yemen launched strikes against tankers in the Red Sea, impacting an alternative export route utilized by Saudi Arabia to circumvent the Strait of Hormuz.

Market analysts noted that energy prices continue to reflect geopolitical risk. Susannah Streeter, Chief Investment Strategist, Wealth Club, told the BBC that financial markets remain cautious due to ongoing fluctuations in the conflict, adding that current price levels still incorporate uncertainty surrounding the potential for a long-term diplomatic resolution.

Natural gas markets have experienced concurrent pressure. Research from Wood Mackenzie indicates European gas storage levels have reached historic lows, creating potential supply challenges for the upcoming winter. Analysis shows that if the Strait of Hormuz remains impassable for an additional two months, European storage reserves could drop below 70% by November 1, 2026, compared to a historical five-year average of 90% for that date. Massimo Di Odoardo,Vice President of Gas and LNG Research, Wood Mackenzie, stated that low European inventories, sustained Asian demand, and limited growth in new LNG supplies will likely sustain elevated price levels into 2027.

Implications for Mexico and Global Energy Security

Beyond immediate price volatility, the ongoing Middle Eastern instability is accelerating shifts in energy security, supply chain regionalization, and long-term transition planning. According to Energy Expert Ana Laura Ludlow, while Mexico does not rely directly on Middle Eastern crude or natural gas imports, indirect exposure to global price swings, supply disruptions, and shifting capital allocation presents both market risks and strategic opportunities for the country's energy landscape.

From a fiscal perspective, global crude swings create contrasting pressures on public finances. The country's 2026 budget was constructed on a US$54.9/b reference price for the Mexican Mix. The SHCP's April Pre-Criterios 2027 already revised that assumption upward by 40.8% to US$77.3/b, reflecting the Iran conflict's persistence, with actual export prices trading above that revised estimate through most of the 2Q26, as reported by MBN.

The fiscal benefit, however, continues to be structurally limited by PEMEX's declining export volumes. April exports averaged just 418.2Mb/d, approximately 20% below the SHCP's 521Mb/d target, as the administration's refinery-first policy redirects crude toward domestic processing. At elevated prices, fewer barrels means the potential windfall is only partially captured.

The IEPS fuel subsidy mechanism runs in the opposite direction. Goldman Sachs warned that easily accessible buffers of refined products are being depleted rapidly, particularly in petrochemical feedstocks such as naphtha and LPG, as well as jet fuel, raising concerns about localized shortages if the disruption extends further. In Mexico, rising refined product import costs filter through to the IEPS framework, where the government absorbs the price difference between international and domestic pump prices, a mechanism that costs approximately MX$2.5 billion per week and which expands with every dollar gain in international benchmarks.

Despite these immediate fiscal balancing acts, geopolitical exposure is reinforcing national priorities around long-term energy independence and clean power deployment. According to Ludlow, Mexico has considerable solar and wind resources, particularly in its northern and southeastern regions, offering a baseline to capture long-term clean energy financing. As global markets prioritize lower-risk jurisdictions, building out grid infrastructure and establishing regulatory clarity remain key conditions to attract capital aligned with decarbonization objectives.

This market dynamic intersects directly with the expansion of nearshoring across North America. Manufacturing, automotive, electronics, and data center operations relocating to Mexico are bound by corporate decarbonization targets, driving direct demand for reliable, low-carbon electricity, grid storage, and corporate clean power purchasing structures.

In parallel, access to regional North American natural gas supplies provides Mexico with a competitive transition fuel. Leveraging existing gas infrastructure allows the market to manage intermittency while laying the structural groundwork for future low-carbon fuels, including biomethane and green hydrogen. Developing early-stage green hydrogen projects, supported by predictable policy frameworks and public-private cooperation, could further position Mexico within emerging global supply chains as international energy markets continuously adjust to external geopolitical shocks.