Europe's diesel squeeze: falling stocks, impact on Romania — NRG-IA

Europe is not primarily facing a crude oil shortage, but rather a bottleneck in refining available volumes into sufficient diesel. Refineries in several regions are operating below capacity, refined product inventories are low, and available cargoes are being contested simultaneously by Europe, Asia, Africa, and Latin America. Diesel lies at the heart of this tension because it powers heavy transport, agriculture, construction, and a significant portion of industry. In Romania, where domestic production does not cover total consumption, international pressure has already reached the pump: prices across major retail networks have risen again, and regional benchmarks used in pricing have advanced much faster than crude oil. Morgan Stanley sees inventories falling from August Morgan Stanley analysts estimate that European diesel inventories will begin to decline steadily starting in August, reaching approximately 299 million barrels by November. This would mark the lowest level for this time of year since at least 2015. The bank's warning does not point to an imminent physical shortage of diesel in the market, but rather to a shrinking buffer that allows the system to absorb unforeseen disruptions. The lower the inventories, the faster a refinery outage, export restriction, or transport issue translates into higher prices. The most visible sign of this imbalance is the diesel refining margin—the difference between the value of the finished product and the cost of the crude oil required to produce it. This is not the retail margin of gas stations, but the indicator showing the value of industrial capacity to produce the fuel. In Northwest Europe, diesel margins have reached record levels, though Morgan Stanley believes that existing constraints are already largely priced in. This last point is crucial. A tight physical market does not mean prices will rise indefinitely or that every financial bet on further increases will be profitable. The outlook depends on refinery restarts, demand, Asian exports, and the duration of conflicts affecting oil infrastructure. The bottleneck has shifted from extraction to refining Crude oil only becomes useful to the economy once it is processed into diesel, gasoline, jet fuel, and other products. In 2026, this segment of the energy chain has become more fragile than the supply of the raw material itself. The International Energy Agency shows that global crude runs increased in June compared to the previous month, but remained about 6 million barrels per day below the level of the same period last year. Export refineries in the Middle East had not returned to normal operations, activity in Russia was disrupted by attacks, and Asian plants continued to process reduced volumes. For the full year, the agency estimates a decline in global refining throughput of 2.4 million barrels per day. The divergence between the crude oil market and the refined products market is clearest in the Gulf. Following a temporary easing of traffic through the Strait of Hormuz, regional producers managed to increase crude exports. However, fuel flows remained much weaker, as affected facilities could not ramp back up to full speed. In June, Gulf states exported approximately 4 million barrels per day of crude oil, but only about 1 million barrels per day of petroleum products—roughly a quarter of the pre-conflict level. Globally, disruptions in the Middle East, Russia, and Asia removed about 5 million barrels per day of refining capacity from operation in the second quarter compared to the previous year. Consequently, the market can receive more crude oil without receiving enough diesel. In this scenario, crude prices may stabilize or even decline, while finished fuel continues to grow more expensive. Diesel concentrates shocks from the Gulf, Russia, and China The Middle East is only one source of tension. Ukrainian attacks on Russian refineries have reduced fuel production and forced Moscow to restrict diesel exports to protect domestic supply. While Europe no longer directly buys the Russian volumes it did before the sanctions, the effect remains global. Russia's traditional buyers must seek diesel from India, the United States, the Middle East, or other refining hubs. They compete with European importers for the same cargoes, and the deficit is transmitted through prices, even if Russian product does not enter the European Union directly. China adds a different kind of pressure. Its refineries have reduced throughput following a decline in crude imports, shrinking the volume of petroleum products available in the Asian system. China is not a consistent, direct supplier of diesel to Europe, but its output influences the global balance: when Chinese exports are low, Asian buyers absorb more volumes from other regions. The United States offset part of the deficit in the first half of the year by increasing fuel exports. However, their capacity to intervene is shrinking as domestic summer demand rises…