Why Trump’s Trade Threat Puts Spain’s Energy Security on the Line

Donald Trump’s July 8 order to halt trade with Spain has yet to become an energy embargo, but Madrid can no longer dismiss it as political theatre. It was the second such threat since March 2026, this time delivered directly to Treasury Secretary Scott Bessent after Spain refused to commit 5% of GDP to defence spending and declined to support US operations against Iran. Washington is now reportedly examining products that could be targeted, even though EU customs rules make it illegal to isolate one member state from the bloc’s common trade policy. Spain has spent the last two years, including the Middle East crisis, increasing its reliance on the very country threatening to weaponize trade against it.The exposure is visible first in crude oil. The US supplied an average of roughly 250,000 b/d to Spain in 2025 (out of total 1.2 million b/d), mostly WTI Midland, and has recently alternated with Mexico as the country’s largest source. Spain’s crude slate is comparatively diversified, with substantial barrels also arriving from Brazil, Nigeria, Libya and Kazakhstan, which makes an outright shortage unlikely; however, it does not make the loss of US supply painless.When the effective closure of the Strait of Hormuz disrupted Middle Eastern trade, Spain’s crude imports rose 15.8% year-on-year in April. As the disruption caused refined products shortage on the European market, products refined products crack spreads were pushed to decades highs, and the Spanish refineries maximized their output. By June, imports had climbed to around 1.25 million b/d from 1.07 million b/d a year earlier. Spain was among lucky ones, who did not have much Middle Eastern barrels in the imports slate apart from Iraq (averaging close to 100,000 b/d, which effectively disappeared in April). Kazakh CPC Blend arrivals increased 4 times to about 140,000 b/d, while Mexican supply increased to 155,000 b/d from 90,000 b/d. And in this context, US crude has become a backbone of Spain, because it is abundant, geographically accessible, and priced against WTI rather than the distorted Middle Eastern market. Out of all Spanish refiners, Repsol is the largest buyer. It operates five Spanish refineries with about 896,000 b/d of distillation capacity, roughly 62% of the national total. Cargo-tracking data show Repsol as the principal importer of US crude into Spain: barrels are purchased in the US and delivered to Repsol’s own refineries. WTI Midland dominates because its light, sweet quality is easy to process. Repsol has also taken heavy sour Canadian Cold Lake Blend shipped through US Gulf terminals and Southern Green Canyon (a medium-sour US grade), for its more complex Cartagena and Petronor plants, where light WTI barrels are balanced by the heavier Canadian and US options. A disruption would therefore require finding the right combination of light sweet and discounted heavy sour barrels for individual refinery configurations.Spain could replace those barrels, but probably at a higher cost. More CPC Blend would deepen exposure to the Russian Black Sea export corridor, while Mexican supply is constrained by decreasing production on the mature fields and domestic refinery requirements after the government prioritized Mexican refineries over international buyers. So the easiest substitution would be West African or Brazilian grades. Brazilian grades are particularly attractive for Atlantic Basin refiners because of their growing availability due to recent discoveries and relatively short shipping distance to Spain.Natural gas is the more strategic vulnerability. US LNG supplied about 30% of Spain’s total gas imports in 2025, almost double its 2024 share, and still accounted for 29% in the first half of 2026, second only to Algeria’s pipeline exports, whose share was around 40%. Unlike Yamal cargoes tied to Naturgy’s long-term Russian contract, American supply combines long-term offtake with flexible portfolio and spot cargoes that move according to relative prices. That flexibility helped Spain during the crisis March-June months, but it also means cargoes can be redirected toward Asia whenever JKM offers a stronger netback.Until now, Russian LNG has provided additional buffer. Naturgy’s 2013 Yamal contract contains take-or-pay commitments for 3.2 bcm/year through 2041, and Spain’s Russian receipts surged during the 2026 crisis. Russia supplied 21% of Spanish gas in June, but that option disappears on January 1, 2027, when the EU’s full ban on Russian LNG takes effect. Naturgy faces €10.95 billion of remaining Russian purchase commitments and may have to invoke force majeure.June illustrates both Spain’s risk mitigation strategy and its limits. Total gas imports were roughly 2.45 bmc, while domestic demand was at to 2.26 bcm. LNG supplied 51%, while pipeline gas rose to almost 49% of supply (up from 31% year-on-year). Algeria delivered 0.94 bcm, predominantly through Medgaz pipeline.Spain is seeking to strengthen its pipeline buffer. Madrid and Algiers began discussing a potential increase of up to 10% in Medgaz deliveries in March, while Naturgy said in July that a further 0.6-1 bcm of annual capacity could be added before winter. The pipeline’s current 10 bcm/year capacity was achieved by raising pressure through additional compression, but further expansion is constrained by the pipeline’s physical diameter. Algeria can therefore provide greater contractual security, but it cannot quickly replace Spain’s entire US LNG exposure without additional compression, upstream supply and broader infrastructure upgrades.Reducing gas dependency in the electricity generation sector would help to elevate energy security. Renewable generation rose 12% in June and supplied 58.4% of electricity, while combined-cycle plants still produced 15.7%. Gas is being pushed out of baseload generation, yet it remains an important insurance when wind, solar, hydro or interconnections underperform and thus is unlikely to ever completely disappear from the country’s needs.The deadline of Russian LNG cargoes at the beginning of 2027 changes the leverage behind Trump’s threat. In crude, Spain can reroute trade and absorb weaker refinery margins. In gas, the removal of Russian LNG leaves Madrid balancing between a nearly full Algerian pipeline and a US supplier already providing almost 1/3 of imports. Spain’s vast regasification system protects it from a physical cutoff, but terminals do not create cargoes by themselves. If Washington turns political hostility into export restrictions (or if US sellers simply divert flexible volumes to higher-paying Asian buyers) Spain would have to outbid competitors for Nigerian, Qatari (if finally available) or other Atlantic LNG while asking Algeria to push Medgaz beyond its current limits. This way, the immediate danger is not empty storage tanks, it is that Spain enters 2027 with fewer supply options, higher replacement costs and a US administration increasingly willing to treat energy access as part of a wider political negotiation.By Natalia Katona for Oilprice.comMore Top Reads From Oilprice.comIran Rejects Oman’s Proposal to Evenly Divide Hormuz ControlShell Sells Cyprus Gas Stake to MOL for $720 MillionRefined Fuels, Not Crude, Are Driving the Oil Market Crunch