Key facts
- The Omsk refinery is owned by state energy company Gazprom and can process over 21 million metric tons of crude a year.
- The plant accounts for one of every six liters of gasoline and diesel fuel produced in Russia, according to the report.
- Astra said its OSINT analysis confirmed a blaze near the site; the precise targets and extent of damage are not clear.
- Khotsenko said emergency workers were sent to all sites hit by falling drone debris and did not specify which facilities were struck.
- Ukraine's General Staff said the Omsk plant supplies the Russian military and has a refining depth of about 99%.
The Russian city of Omsk, home to the country's largest oil refinery, came under drone fire for more than eight hours on November 11, 2026, according to local officials and monitoring channels. The Siberian city lies about 2,500 kilometers (approximately 1,550 miles) from Ukraine's eastern border.
Omsk Governor Vitaly Khotsenko reported during the day that Ukrainian drones were attacking the region and urged residents to remain indoors. Air raid sirens sounded over the city for more than eight hours, and local Telegram channels reported that the region's airspace was closed and restrictions imposed on mobile internet.
Residents reported a fire near the Omsk oil refinery as a result of the attack, the independent Russian Telegram channel Astra reported. The outlet said its OSINT analysis confirmed a blaze near the site, though the precise targets and the extent of the damage were not yet clear. Khotsenko said emergency workers had been dispatched to all sites impacted by falling drone debris but did not specify which facilities were struck. Residents also reported blackouts in some districts following the strikes. The Kyiv Independent said it could not verify these claims at the time of publication.
The Omsk refinery is the largest in Russia by refining capacity. Owned by the state energy company Gazprom, it has a processing capacity of over 21 million metric tons of crude a year and is responsible for one of every six liters of Russian gasoline and diesel fuel, according to the report.
Ukrainian forces struck the refinery twice before, in July and again in October 2026. After the July attack, Ukraine's General Staff said the plant produces a wide range of fuels, lubricants and petrochemical products and is involved in supplying the Russian military. The General Staff also reported that the Omsk refinery has a refining depth of about 99%, one of the highest rates in Russia.
The report said Ukraine's development of domestic long-range drones has made targets deep in the Russian rear, such as the Omsk refinery, newly reachable. President Volodymyr Zelensky has identified long-range sanctions as one of Ukraine's strongest forms of leverage against Russia.