Ukraine’s Defense Forces struck a major oil refinery and a Black Sea oil terminal on 19 August and overnight into 20 August, Ukraine’s General Staff reported. Drones also hit a key mainland electricity hub supplying occupied Crimea, Militarnyi reported after analyzing NASA satellite data.

Together, the reported strikes put three parts of Russia’s war machine under attack within hours: fuel production, Black Sea oil exports, and the mainland electricity bridge to occupied Crimea. They continue a deep-strike campaign intended to disrupt fuel supplies and logistics supporting Russia's invasion

A major refinery deep inside Russia

Ukraine struck the TANECO refinery in Nizhnekamsk, in the Russian republic of Tatarstan, where the General Staff reported a fire at the production site. Militarnyi had earlier identified the same facility from eyewitness footage showing a drone reaching the city’s industrial zone despite Russian air-defense fire.

Owned by Tatneft, TANECO is one of Russia’s newest, largest, and most technologically advanced refineries. It can process more than 16 million tons of crude annually and produces gasoline, diesel, aviation fuel, marine fuel, and other petroleum products.

Neither the General Staff nor the available imagery established whether processing equipment was damaged or production stopped.

A Black Sea terminal moving about 20 million tons a year

Ukraine also hit the Tamanneftegaz oil and gas terminal in the village of Volna, Krasnodar Krai, where the General Staff reported another fire. Militarnyi found a corresponding fire in NASA Fire Information for Resource Management System (FIRMS) data and assessed that storage tanks were likely burning.

Militarnyi described Tamanneftegaz as southern Russia’s largest private oil terminal. The complex can handle about 19.9 million tons annually, while its tank farm held more than 1 million cubic meters before Ukrainian attacks began.

The Tamanneftegaz terminal receives, stores, and loads petroleum products onto tankers, making it an important link in Russia’s Black Sea exports. Drones previously hit three tanks and pipelines there on 30 July.

The mainland electricity gateway to occupied Crimea

Drones hit the Taman 500-kilovolt substation in Krasnodar Krai, where NASA satellite data recorded a fire, Militarnyi reported. All four lines of Russia’s power bridge across the Kerch Strait pass through this high-voltage hub, making it the principal mainland gateway for electricity sent to occupied Crimea, Militarnyi reported.

Power failed in Simferopol, Sevastopol, Kerch, Feodosia, and Yalta around 1:45 a.m., according to Suspilne Crimea. Electric transport stopped in several cities. Sevastopol’s occupation chief said restrictions were lifted after about 90 minutes, although the grid remained unstable and some nearby settlements still lacked electricity. Social facilities in Sevastopol switched to backup power.

Crimean Wind also reported explosions near the Kafa and Malorechenske substations inside Crimea, Suspilne Crimea reported. The available evidence therefore does not establish that the Taman strike alone caused the outages.

Ukraine’s sustained long-range strike campaign

Ukraine's long-range strikes on Russian targets have ramped up in recent months. One day earlier, drones hit a key crude-processing unit at the Bashneft-UNPZ refinery in Ufa, Militarnyi reported. Ukraine had also struck TANECO on 10 August and both Nizhnekamsk refineries on 12 June, Suspilne reported.

Euromaidan Press reported that Ukrainian deep strikes hit 18 Russian oil and gas facilities in May, making it the heaviest month of 2026 at that point. On 6 August, drones attacked a top-five refinery in Yaroslavl for the seventh time this year. Five days later, they reached Orsk, about 1,500 kilometers from Ukraine.