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Sources say that Russia is using its spare capacity for oil refining to compensate for drone damage in Ukraine.

Sources and data show that despite Ukraine's largest drone attacks, Russia's oil production has only fallen by 3% in this year. Refineries have avoided a sharp decline in fuel output by using spare capacity to offset the damage caused by the strikes.

Ukraine has intensified drone attacks in Russia. The aim is to destroy oil refineries and depots, and shut down pipelines, as well as Moscow's main source of funding the war in Ukraine.

The majority of attacks took place at the beginning of 2025, then resumed in August. At least 17 major refineries were targeted by Ukrainian drones, which forced Russia, the second largest crude exporter in the world, to halt fuel exports and increase drone defenses.

According to calculations based upon information from three Russian sources, at the peak of the second strike wave between August and Oct., attacks and planned repairs took 20% of Russia’s refinery capacity off-line.

Sources and data show that this only led to a 6% decline in the total Russian refining volume to around 5.1 millions barrels per day, a drop of about 300,000.

From January to October, the oil processing industry fell by 3% to 220 millions metric tons (5,2 million bpd).

Due to the sensitive nature of the subject, the sources spoke under condition of anonymity. Russia does not publish data on the refining of oil. The Russian energy ministry refused to comment.

There was no breakdown of planned versus unplanned maintenance.

RUSSIA USE SPARE CAPACITY; KYIV APPLAUSES DRONE SUCCESSFUL

Three industry sources said that Russian refineries had been running at a capacity well below their full potential before the attacks. They were able, however, to minimize the impact of the attacks by re-starting spare units in both the damaged and unaffected plant as well as by putting the repaired units back into service.

Russia's total refining capability is around 6.6 millions bpd. However, industry sources claim that it is rarely used to its full potential.

Kyiv claims its drone offensive is aimed at disrupting fuel supplies for Russian troops in Ukraine, and denying Moscow oil revenues.

The International Energy Agency reported that Russian revenues from crude oil and petroleum products sales fell in August, to the lowest level since the beginning of the war 2022.

Last month, Ukraine's president Volodymyr Zelenskiy stated that long-range strikes could have cut gasoline supplies by as much as a fifth in Russia.

Vladimir Putin, the Russian president, has stated that Moscow will not bow to foreign pressure.

UKRAINE STRIKES INSIDE RUSSIA

The drone attacks may have helped Russian refineries to cope for the moment, but they are not without impact.

The first quarter of this year saw six major refineries hit by Ukraine, including Ryazan and Volgograd.

According to the data collected by UK-based non profit group Open Source Centre, since August began, at least 58 drone attacks have been launched on Russian energy sites. Drones were sent as far as 1,200 miles (1,200 km) into Russian territory.

Since early August, drones from Ukraine have damaged several plants in the region, including those at Novokuibyshevsk and Kirishi.

Western sanctions have made it difficult for Russia to get spare parts from Western companies, which have upgraded the majority of Russia's refineries in the last 30 years.

Russian companies have stated that they have developed ways to manufacture equipment in Russia or import it from China. China remains a strategic ally for Moscow. Industry sources say that repairs have allowed distillation units to be back in operation within a few weeks.

They are expensive and can take longer to complete. It is unclear for how long Russia will be able to use spare capacity, if Ukrainian drones continue to attack. (Reporting and Editing by Guy Faulconbridge, Joe Bavier).

(source: Reuters)