Russia's fourth-largest oil refinery went dark on June 24 after Ukrainian drones struck its primary crude distillation unit — the latest blow in a systematic campaign that has crippled roughly 40% of Russia's refining capacity and triggered fuel rationing across two-thirds of the country.

The Lukoil-owned NORSI refinery in Kstovo, located about 280 miles east of Moscow, processes approximately 320,000 barrels of crude per day and produces 11% of Russia's total gasoline output. Ukrainian military intelligence confirmed four drones hit the facility, with all striking their intended targets.

The Damage

The strike knocked out CDU-5, the refinery's primary crude distillation unit, which accounts for roughly a quarter of the facility's total capacity. Operations have been fully suspended.

The St. Petersburg International Mercantile Exchange immediately halted diesel and gasoline sales from the refinery. This wasn't the first attack — previous Ukrainian strikes hit NORSI in January, March, and May of this year.

Russia's Fuel Crisis Deepens

The cumulative effect of Ukraine's drone campaign is now impossible to ignore. More than 20 Russian regions have imposed government-mandated restrictions on gasoline sales. Some areas are capping purchases at 15 liters per vehicle — the tightest limits anywhere in the country.

Bloomberg reported that Russian gasoline production fell 25% year-over-year in June, directly attributed to the ongoing refinery attacks. Moscow is now considering adding diesel to its existing export bans on jet fuel and gasoline.

President Zelensky stated in May that nearly 40% of Russia's primary oil refining capacity had been disabled. The NORSI strike pushes that number higher.

Part of a Larger Campaign

Ukrainian drones have struck Russian refineries at least 47 times since the start of 2026 — already approaching the 82 attacks recorded for all of 2025. Kyiv has announced this is part of a 40-day operation designed to pressure Russia economically.

The Moscow Oil Refinery, which supplies 40% of the capital's gasoline, was hit on June 18. The attacks target facilities deep inside Russian territory, demonstrating Ukraine's ability to project force hundreds of miles from the front lines.

Strategic Implications

Russia has remained largely silent on individual strikes, with state media providing minimal coverage. Lukoil did not respond to media requests for comment on the NORSI shutdown.

The Kremlin now faces a difficult choice: divert military resources to defend energy infrastructure, or accept continued degradation of refining capacity that affects both the civilian economy and military logistics.

For Ukraine, the math is straightforward. Every barrel of fuel Russia can't refine is a barrel that won't power tanks, trucks, or aircraft on the front lines. The drone campaign may not win the war, but it's making Russia pay a price that grows steeper each week.