Kyiv's 51% refinery claim runs well ahead of the IEA's 30% diesel decline

Kyiv's 51% comes in two versions. The Defense Ministry's statement named struck refineries in cities such as Moscow, Yaroslavl, Ust-Luga, Perm, Saratov and Syzran, and put the share of "Russia's oil refining capacity" knocked out at 51% ^[1]. Defense Minister Yevhenii Khmara, presenting an assessment by analysts from the intelligence services, the General Staff and his ministry ^[3], used a narrower base. "Fifty-one percent of struck refining capacity is a significant blow to the enemy's economy, to its ability to carry out aggression and supply its troop groupings. Our deep strikes continue to bring the war to Russian territory," he said ^[4]. Half of the struck capacity equals half of the national total only if every plant was hit, and Russia has 32 refineries ^[10].

The International Energy Agency is the only source in the record that is not a party to the war. It says Russian diesel output has fallen by about 30% ^[8]. On the ministry's broad reading, 49% of capacity would still be running ^[19], while the IEA's number leaves diesel output near 70% of its former level ^[20]. Diesel is one product and capacity covers the whole plant, so the two need not match exactly. A 21-point gap ^[21] still wants an explanation, and three are available. The 51% may be a share of struck plants only, as Khmara's wording suggests. It may be a snapshot taken right after a run of strikes. Or refiners may be covering part of the loss, as they are trying to do by delaying scheduled maintenance and bringing mothballed units back online ^[12].

Russian officials have not published any damage data ^[5]. Vladimir Putin's own estimate is roughly 1% of gross domestic product ^[6]. "They started attacking oil refineries and openly declared the goal of damaging our economy. Did they achieve their goal? Partially," he said at the Valdai Club ^[7]. I'd treat the 1% as a floor, because it comes from the side that gains by keeping it small. For fuel prices, the IEA's 30% is the figure I would use.

Russia's responses show in what it has stopped doing. The Kremlin banned diesel exports ^[14]. Russia has historically been the world's third-largest producer of refined fuel products, after the US and China ^[16], and the ban gives up foreign diesel sales to keep its own market supplied. It also pushed global prices higher and led President Donald Trump on Sept. 13 to urge Ukraine to stop hitting refineries ^[14]. At home, a fuel crisis earlier this year forced authorities to restrict gasoline sales ^[15], and drivers have waited up to 40 hours to fill up ^[9]. Refiners have also lowered fuel quality standards to keep gasoline supplied, at the risk of damage to engines and pollution control equipment ^[13].

The repair schedule gives Kyiv's number its strongest defense. One refinery has been hit every three days in recent months, according to the IEA ^[17]. Spread evenly across 32 plants, that is a strike on each one about every 96 days ^[22]. Ukraine has increasingly aimed at the units that remove impurities from fuel, and those take months to repair ^[11]. The IEA says the cycle of damage and emergency repairs could degrade units long term ^[18]. On that reading, today's diesel output rests partly on maintenance Russia has postponed, and the 30% understates the eventual loss. The view here, that the damage is real and nearer 30% than 51%, would be wrong if the IEA's next diesel count moved toward half of normal output.